Governor Override Patents (Class 123/365)
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Patent number: 10131387Abstract: A construction vehicle has a slewing ring on which a superstructure is rotatably mounted, and an undercarriage supporting the slewing ring. The undercarriage includes an upper chassis, having an upper propulsion device, that is rigidly connected to the slewing ring, and a lower chassis having a lower propulsion device that is mounted in a pivotable manner with respect to the upper chassis. Furthermore, a pivoting apparatus is provided in order to pivot the lower chassis relative to the upper chassis.Type: GrantFiled: June 5, 2016Date of Patent: November 20, 2018Assignee: Wacker Neusen Linz GmbHInventor: Thomas Erlinger
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Patent number: 9926857Abstract: This utility type patent publishes a safety control device for petrol post hold digger. It includes an operation frame, respective handles in the opposite two sides of the frame; one is throttle control handle in the right side and another is balance control handle in the left side. The safety control device is mounted on the above of the frame near left side, connected with engine in the middle place of the operation frame by one cable, with the throttle control handle in the right side by another cable. A long touch rod is installed underneath the safety control device, sticking outside of the operation frame to position A as shown in bellow picture. When post hole digger is used, drill bit is driven into soul at clockwise direction. If the drill bit touches big roots or rocks and stops rotation in a sudden, all the inertia and torque from still running engine will be thrown to the operation frame, makes it turn to opposite anticlockwise direction.Type: GrantFiled: December 29, 2014Date of Patent: March 27, 2018Assignee: JUNIFENG INTERNATIONAL CO., LIMITEDInventor: Bill Hongwen Lyu
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Patent number: 7644697Abstract: A governor device comprises a first lever connecting a governor lever to a rotary speed setting lever interlockingly, a second lever pivotally supported by the first lever, and a third lever pivotally supported by the second lever, regulated its rotation amount by the second lever and interlocked with a governor weight. A fuel injection compensation spring is provided between the first lever and the second lever so as to bias them for decreasing the rotary speed for a fixed amount at the time of low speed rotation. A compensation starting rotary speed setting device, which is a set load changing means for the fuel injection compensation spring, is provided on the first lever near the fuel injection compensation spring.Type: GrantFiled: August 20, 2004Date of Patent: January 12, 2010Assignee: Yanmar Co., Ltd.Inventors: Jyunichi Samo, Toshio Kamiyama, Masashi Sagara
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Patent number: 7165531Abstract: A negative rate shaping torque capsule is provided that effectively reduces torque rise of the engine. The device is part of the mechanical governor and allows fuel control rack position to decrease as engine speed decreases, thus reducing the amount of fuel delivered and reducing torque rise. The device works by the addition of a pivot arm to the existing main governor arm. One end of the pivot arm is pinned to the governor arm, and a roller is pinned to the opposite end. This roller bears on the fuel rack, maintaining rack position. An additional roller is pinned to the side of the pivot arm and bears on the tension arm. The travel of the pivot arm relative to the governor arm is limited in one direction by a physical stop, and in the other direction by a torque capsule (TC) spring. The TC spring is fixed to the governor arm and bears on the pivot arm roller opposite the tension arm. The TC spring holds the pivot arm roller against the tension arm.Type: GrantFiled: February 15, 2005Date of Patent: January 23, 2007Assignee: Deere & CompanyInventors: Brian Hans Bratvold, Gary Mark Frodsham, David William Peters
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Patent number: 6807940Abstract: A governor for use in an engine provided with an overspeed protection device arranged to trip in the event that engine speed exceeds a predetermined speed. The governor comprises a centrifugal weight mechanism comprising at least one weight coupled to an angularly adjustable metering valve member through a lever member, the metering valve member being operable to control the level of fuelling of the associated engine depending on engine speed. The governor further comprises a damping arrangement associated with the lever member which is arranged to damp oscillatory movement of the lever member, in use, and a prevention arrangement for preventing the overspeed protection device associated with the engine tripping upon engine start up.Type: GrantFiled: November 13, 2001Date of Patent: October 26, 2004Assignee: Delphi Technologies, Inc.Inventor: Geoffrey D Bootle
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Patent number: 6725827Abstract: A fuel injector (6) and spark plug (7) are arranged in a combustion chamber (5) of an internal combustion engine. By forming by stratification a self-ignitable preliminary air-fuel mixture in the combustion chamber (5), a spatial distribution is given to the density of the preliminary air-fuel mixture in the combustion chamber (5). Part of the preliminary air-fuel mixture formed in the combustion chamber (5) is ignited by the spark plug (7) to cause combustion by flame propagation, then the remaining preliminary air-fuel mixture is successively made to self-ignite and burn with a time lag. The ignition timing is set so that the ratio of the preliminary air-fuel mixture made to burn by self-ignition becomes more than a predetermined lower limit and less than a knocking generation limit.Type: GrantFiled: October 3, 2002Date of Patent: April 27, 2004Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Takanori Ueda, Takeshi Okumura, Shigeo Furuno, Satoshi Iguchi, Kazuhiro Akihama, Masahiro Taki, Satoshi Yamazaki
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Patent number: 6360716Abstract: A governor for use in an engine, the governor including a drive shaft and a plurality of weights carried by the drive shaft. The weights are rotatable with the drive shaft and are moveable relative to the drive shaft. A lever is moveable in response to movement of the weights, the lever being moveable against the action of a return biasing arrangement. The governor further includes a further arrangement for holding at least one of the weights against movement so as to permit adjustment of the operating speed of the governor.Type: GrantFiled: September 7, 2000Date of Patent: March 26, 2002Assignee: Delphi Technologies, Inc.Inventor: Geoffrey David Bootle
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Patent number: 5785019Abstract: A fuel injection system for an internal combustion engine includes a fuel injection pump injecting a fuel in an amount corresponding to a position of a control rack, a governor including a start spring, a control spring and an idling sub-spring biasing the control rack in a fuel injection amount increasing direction, an adjusting lever adjusting a spring load of the control spring, and a fly weight rotating together with the fuel injection pump and shifting the control rack in a fuel injection amount decreasing direction by a centrifugal force, and a stopper mechanism restricting movement of the control rack in the fuel injection amount increasing direction, wherein the stopper mechanism comprising a stopper opposing to an end portion of the control rack and an elastic body biasing and holding the stopper at a stop position, an elastic force of the elastic body being set to be greater than a sum of a spring load of the start spring and a spring load of the idling sub-spring while the adjusting lever is in anType: GrantFiled: April 29, 1997Date of Patent: July 28, 1998Assignee: Komatsu Ltd.Inventors: Jiro Akagi, Masaki Takahashi, Hiroki Satow, Godo Ozawa, Noriaki Nakane
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Patent number: 5642710Abstract: A governor mechanism for use with a fuel pumping apparatus includes a centrifugal weight mechanism which is coupled to an output member the latter being coupled to a fuel control member so that with increasing speed the quantity of fuel supplied by the apparatus is reduced. A governor spring opposes the movement of the output member but in addition a leaf spring is provided to supplement the action of the governor spring. The leaf spring is formed by one end of a torsion spring which is wound about a cylindrical member. The cylindrical member and the torsion spring are axially movable relative to each other to alter the effective number of turns of the torsion spring connected in series with the leaf spring.Type: GrantFiled: June 17, 1996Date of Patent: July 1, 1997Assignee: Lucas Industries public limited CompanyInventors: Daniel Jeremy Hopley, Adrian Mark Greaney
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Patent number: 5535721Abstract: A fuel pumping apparatus for supplying fuel to an engine incudes an angularly adjustable throttle for determining the amount of fuel supplied to the engine. The setting of the throttle in normal operation is determined by an actuator which is controlled by an electronic control system. A mechanical governor is provided which is coupled to the throttle member by a sliding link and this acts to prevent the speed of the engine exceeding a predetermined value. In the event of failure of the actuator or control system a pivotal arm is moved to an emergency run position in which the actuator is decoupled from the throttle member and the force exerted by the governor spring of the mechanical governor is reduced to allow the engine to operate at a reduced speed.Type: GrantFiled: August 23, 1995Date of Patent: July 16, 1996Assignee: Lucas Industries p.l.c.Inventors: Graham R. Lewis, Peter J. Parr
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Patent number: 5460132Abstract: A fuel injection pump for an engine comprises a magnetic coupling 37 straddling a partition 36 for connecting a timing control rod 6 and a displacement transfer section 34 of a governor so as to enable efficient transfer of rotational force from the displacement transfer section to the timing control rod without need for an oil seal therebetween, and a prestroke controller for the fuel injection pump 131 includes an injection advance adjustment add-on device 136 for conducting prestroke control independently of the magnetic coupling and thereby provide greater freedom in establishing injection timing advance characteristics by enabling injection timing control in response to temperature or load and/or a safety mechanism 237 for ensuring operation of a governor mechanism 20 based on movement of a flyweight 11 even if the magnetic coupling should stick.Type: GrantFiled: December 20, 1994Date of Patent: October 24, 1995Assignee: Zexel CorporationInventors: Hiroshi Ishiwata, Tohru Yokota, Mitsuaki Kobayashi
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Patent number: 5325831Abstract: The governor of the present invention includes the reverse Angleich lever 9 one end of which is jointed to the control block 5 which moves in the axial direction in accordance with the movement of the fly weight 3, and the other is jointed to the mid-portion of the control lever 18. At the mid-portion of the reverse Angleich lever 9, there is provided the stopper pin 25, and on the tension lever 12, there is provided the abut member 26 for detachably abutting to the stopper pin 25.When the cam shaft 2 rotates at a high speed, the stopper pin 25 abuts to the abut member, avoiding the rotation of the reverse Angleich lever 9. Thus, the reverse Angleich characteristic can be obtained.Type: GrantFiled: July 30, 1993Date of Patent: July 5, 1994Assignee: Nippondenso Co., Ltd.Inventor: Shizuo Handa
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Patent number: 5195490Abstract: A speed governor for internal combustion engines, having a centrifugal speed transducer serving to govern the speed, acting counter to the force of governor springs, generating a speed-dependent adjusting travel of a governor sleeve, and equipped with flyweights, which transducer acts via the governor sleeve and a governor lever upon a fuel quantity adjusting device governor rod of the fuel injection pump. The governor sleeve comprises a first, inner drag member part and a second, outer drag member part, between which two drag springs are coaxially disposed, of which one drag spring is operative in only one direction of axial motion.Type: GrantFiled: July 9, 1992Date of Patent: March 23, 1993Assignee: Robert Bosch GmbHInventor: Sieghart Maier
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Patent number: 5148789Abstract: In a governor device of a diesel engine, a control rack of a fuel injection pump is adapted to be controllably actuated by a balance between a governor spring and an engine revolution speed responsive means. A speed control member is adapted to be manipulated for adjusting a tension force of the governor spring. A fuel limiting actuation member serves to prevent an excessive fuel flow from being injected when the speed control member is manipulated for a quick acceleration. A quick acceleration state detecting means serves to detect a quickly accelerated state of the engine so as to selectively change over the fuel limiting actuation member to a fuel limiting position and to a fuel limitation cancelling position depending on the lapse of time.Type: GrantFiled: November 6, 1990Date of Patent: September 22, 1992Assignee: Kubota CorporationInventors: Yasunori Shiraishi, Masahiro Nagahama, Mutsumi Murata, Yuzo Umeda, Setsuo Yamada, Kazuyoshi Morioka
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Patent number: 5113825Abstract: An engine controller which is arranged to operate a governor through an actuator which is controllable either by an accelerator lever in an operator's station or by radio control. First and second levers are rotatably mounted on a shaft, and are biased respectively by a spring to turn in one direction. The first lever is connected to the governor by a wire in such a manner as to increase the engine speed when turned in a direction reverse to the biased direction. The second lever is connected to the accelerator lever by a second wire in such a manner as to rotate in the reverse direction when the accelerator lever is operated in the direction of acceleration. A pulley is mounted on the shaft, and a third lever is securely fixed to the pulley. The pulley is connected to the actuator by a third wire such that the pulley is rotated according to the rotation of the actuator. A rod is securely fixed to the first lever to transmit the reverse rotations of the second and third levers to the first lever.Type: GrantFiled: August 16, 1991Date of Patent: May 19, 1992Assignee: Shin Caterpillar Mitsubishi Ltd.Inventor: Keiichi Takahashi
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Patent number: 5063900Abstract: A mechanical speed governor for a fuel injection pump of air-compressing auto-ignition internal combustion engines has a stop bracket effecting the release of the starting quantity and limiting the full-load quantity, a flyweight arrangement with integrated positive adaptation acting in the upper speed range and a rocker lever which is in effective connection with the flyweight arrangement. The stop bracket is shifted from a position corresponding to the full-load speed. The rocker lever alters the control travel of the quantity control member for full load via the stop bracket and a counterstop connected to the quantity control member, and effects a negative adaptation in the lower speed range.Type: GrantFiled: December 4, 1990Date of Patent: November 12, 1991Assignee: Mercedes-Benz AGInventor: Ulrich Augustin
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Patent number: 5003949Abstract: An apparatus for assisting a primary governor device (20) on an engine at certain load conditions or during transient loading is disclosed. The primary governor device has a control arm (12) which is moved by a primary governor spring (15) via a primary governor arm (14). The control arm (12) governs opening and closing of the throttle plate (10) on the carburetor (11). Four embodiments (47, 54, 30 and 78) of the governor assist mechanism are disclosed. The governor assist apparatus has an assist spring (48, 55, 32, 76) operatively connected to the control arm (12). A vacuum capsule (41) actuates the assist spring (48, 55, 32, 76) from the primary governor device (20) according to the vacuum in the intake manifold and load on the engine. The first embodiment or linear mechanism (47) has an assist spring (48), an intermediate link (49), and the diaphragm plunger (40) in linear alignment.Type: GrantFiled: April 21, 1989Date of Patent: April 2, 1991Assignee: Onan CorporationInventors: John C. Fanner, Nick V. Halstead
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Patent number: 4995362Abstract: The device comprises a control rod running parallel to the fuel injection pump and affording a rigidly associated collar alongside each pumping element; each such collar is sandwiched between a pair of spring-loaded sleeves slidably mounted to the rod and incorporating a relative pair of peripheral tongues by which the internal metering mechanism of the element is rotated between two limit positions corresponding to the maximum and minimum delivery settings of the pump; the calibrated force of the springs is balanced against the resistance offered by the metering mechanism in such a way as to enable continued operation of the rod even in the event that at least one mechanism should jam at a given point between its two limit positions.Type: GrantFiled: January 30, 1990Date of Patent: February 26, 1991Assignee: VM Motori S.p.A.Inventor: Mario Brighigna
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Patent number: 4955344Abstract: A controller having an up/down switch for changing the rotational speed of a prime mover such as an engine, an actuator such as an electric motor for driving a governor on the basis of the operation of the up/down switch so as to control the rotational speed of the prime mover. A target speed is calculated on the basis of the operation of the up/down switch, and the prime mover speed is controlled by using the calculated value. Another switch is provided to immediately shift the prime mover speed to a speed previously set as desired. This shift switch is used to control the prime mover so that the prime mover rotates at the set speed, and this speed is adjusted by operating the up/down switch.Type: GrantFiled: July 3, 1989Date of Patent: September 11, 1990Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Akira Tatsumi, Toichi Hirata, Masaki Egashira, Osamu Tomikawa, Hiroshi Watanabe
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Patent number: 4947814Abstract: A throttle stop assembly for an internal combustion engine is provided to return the throttle shaft to an idle position from a full throttle position in the event a loose throttle level mounting bolt occurs. The throttle stop assembly is designed to for the throttle shaft stop element from the full throttle position to the idle position if the throttle lever mounting bolt assembly fails, thereby preventing the engine from continuing to run in an advanced throttle condition. The stop assembly of the present invention includes a spring-biased piston contained within a threaded, hollow shaft. The spring biased piston has no effect on throttle shaft position except when the normal throttle shaft operating system fails in which case the spring biased piston will cause the throttle shaft to return to its idle position.Type: GrantFiled: February 14, 1989Date of Patent: August 14, 1990Assignee: Cummins Engine Company, Inc.Inventors: Tibor J. Villanyi, John D. Crofts
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Patent number: 4922873Abstract: A solenoid is affixed to a bracket having a base complementary in configuration to a portion of the housing of a diesel engine fuel pump governor that is spaced from the governor's run/stop member; the bracket is mounted on the governor housing by two bolts that also serve to join two halves of the governor housing. A lever mounted on the run/stop member of the governor is connected, by a connecting rod and swivel connection, to the solenoid plunger, so that plunger movement responsive to energization of the solenoid rotates the run/stop member to a RUN position; on de-energization of the solenoid its spring drives the run/stop member to a STOP position. A support rod affixed to the center of the bracket and mounted to the governor housing by a cover mounting bolt braces the bracket against engine vibration.Type: GrantFiled: August 31, 1988Date of Patent: May 8, 1990Assignee: Synchro-StartInventor: Anthony J. Gaeti
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Patent number: 4884542Abstract: In a fuel injection pump for internal combustion engines for motor vehicles, a damping device is provided to eliminate so-called vehicle bucking. The device allows rapid adjusting movements of an rpm adjusting lever, which is connected to the driving lever, to affect the supply quantity setting of the fuel injection pump only with a delay. To this end, the damping device has a damping chamber defined by a damping cylinder and a damping piston displaceable therein. The damping chamber communicates with the pump interior via two parallel throttles and via counter-parallel check valves located in series with the parallel throttles. The damping piston is connected to a damper lever on which the rpm adjusting lever is supported via a pre-stressed drag spring.Type: GrantFiled: December 7, 1988Date of Patent: December 5, 1989Assignee: Robert Bosch GmbHInventors: Karl Konrath, Claus Koester, Karl Zibold, Manfred Schwarz, Karl-Friedrich Russeler, Klaus Krieger, Roland Kupzik
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Patent number: 4864994Abstract: An engine override control for an engine (10) which drives a vehicle transmission (18) and an auxiliary variable displacement pump (20) and which is operable to increase engine speed beyond a set engine speed command to increase flow from the auxiliary pump which has reached maximum displacement at said set engine speed under the control of flow-compensator control (60). A valve (31) controls the delivery of fluid from the pump to a load (34) and associated orifices (42a) and (43a) establish a pressure differential between the pressure of fluid supplied by the auxiliary pump (20) and the operating pressure applied to the load. A cylinder (80) responsive to the pressure differential acts on a control member (12) for the engine governor to increase the speed of the engine when the pressure differential falls below a predetermined value.Type: GrantFiled: November 16, 1981Date of Patent: September 12, 1989Assignee: Sundstrand CorporationInventor: H. Allen Myers
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Patent number: 4850320Abstract: The safety monitoring of an electrical gas-pedal system having a desired-value transmitter (2), a controller unit (3), a controlling element (4) and safety contacts (8 and 9 respectively) associated with the desired-value transmitter and the controlling element includes the possibility of checking the safety contact (9) of the controlling element even if, as a result of an increased idling-speed-of-rotation control position or a mechanical limitation, the control position of the controlling element lies above the switch point of the safety contact. For this purpose, when the engine speed of rotation exceeds a given threshold value (ns) which results from the increased idling speed of rotation plus a safety margin, in the absence of a corresponding signal from the desired-value transmitter push operation is recognized by the controller unit (3), and the controlling element (3) is moved back to such an extent that the safety contact (9) must have switched.Type: GrantFiled: May 13, 1988Date of Patent: July 25, 1989Assignee: VDO Adolf Schindling AGInventors: Andreas Wokan, Gerald Helmstadter, Kurt Probst
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Patent number: 4831984Abstract: According to the present invention, there is provided a centrifugal governor for an injection type internal combustion engine, particularly an all speed governor for a small fuel injection pump which is accomodatable in a housing a cam shaft extends through. A flyweight is disposed at an end of the cam shaft so as to produce propulsion power backward, and the movement of the flyweight causes the tension lever, which has a point of support at its center, to rotate, thereby pressing a governor spring assembly of a concentric, multi-core spring which exerts no load on elements that support the spring assembly. The displacement of the flyweight causes via the tension lever the torque cam to rotate. A guide lever and a floating lever are rotatably supported at the lower end of the tension lever, and the opposite end of the guide lever is united with the floating lever by a cancellation spring.Type: GrantFiled: September 14, 1988Date of Patent: May 23, 1989Assignee: Disel Kiki Co., Ltd.Inventor: Masaatsu Takahashi
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Patent number: 4802451Abstract: A mechanical governor for a fuel injection pump of an internal combustion engine. A governor control lever is mounted on a casing of the governor for pivotal movement about a pivotal axis between first and second extreme angular positions corresponding respectively to a release position and a maximum depression position of an accelerator pedal. A main spring biases the control lever so at to gradually increases a reaction force acting thereupon in proportion to pivotal movement of the control lever from the first extreme angular position toward the second extreme angular position. A reaction force adjusting spring has one end associated with the control lever to adjust the reaction force acting thereupon due to the main spring.Type: GrantFiled: June 22, 1987Date of Patent: February 7, 1989Assignee: Diesel Kiki Co., Ltd.Inventor: Masaatsu Takahashi
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Patent number: 4785778Abstract: A governor (11) for providing at least two different regulation factors for an internal combustion engine (10) including a fuel injection system (12). The governor (11) includes a rotatable flyweight assembly (18,20,22) adapted to be mechanically connected (24) to the engine (10) to be driven thereby. A first spring (28) may be compressed by the flyweight assembly (18,20,22) proportional to engine speed. The flyweight assembly (18,20,22) is adapted to be connected to the engine fuel injection system (12) by a rack (14) and a control level (34) abuts the first spring (28), in opposition to the flyweight assembly (18,20,22). The governor (11) includes a second compressible spring (70) along with an actuator (56,58) for selectively engaging and disengaging the control lever (34).Type: GrantFiled: January 31, 1984Date of Patent: November 22, 1988Assignee: Caterpillar Inc.Inventors: Dennis H. Gibson, Ralph Tegg, Jr.
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Patent number: 4782804Abstract: Idling/final speed governor for internal combustion engines, having a centrifugal-weight regulator (4) which is used for controlling the idling and final speed and produces, against the force of control springs (8), a regulating force corresponding to the engine speed, having a coupling (9) present between a control rod (3), used for controlling the quantity, and the centrifugal-weight regulator (4), having a governor sleeve (7) which has a drag member and having a link (13) between an intermediate lever (12), belonging to the coupling (9), and the control rod (3), with this link (13) having a slide (26) which can be displaced in the quantity-regulating direction, is loaded by a starting spring (27) in the direction of increasing injection quantity and interacts with a full-load stop (32) which is fixed per se but can be changed as a function of operating parameters, such as, for example, by a supercharge-pressure regulator (33), with this change in the stop position signifying a control-travel change which iType: GrantFiled: July 27, 1987Date of Patent: November 8, 1988Assignee: Robert Bosch GmbHInventor: Werner Lehmann
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Patent number: 4774921Abstract: An engine of a construction vehicle is controlled by a system which includes an engine control operation transmitting mechanism having a loose spring means and connecting a fuel control lever and a governor control lever; a decelerator cylinder accommodating a piston therein and having a spring for biasing always the piston on the opposite side of a pressure chamber defined thereby and on the side of the spring a piston rod connected through a york having an elongated hole formed therein to said transmitting mechanism; a solenoid valve adapted to supply the fluid under pressure delivered by a hydraulic pump driven by the engine for exclusive use in control of the system into the pressure chamber of the decelerator cylinder, and cut off the fluid supply; and an electric circuit for controlling the solenoid valve.Type: GrantFiled: September 27, 1985Date of Patent: October 4, 1988Assignee: Kabushiki Kaisha Komatsu SeisakushoInventors: Satoshi Sakaguchi, Yoshihiro Nagata
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Patent number: 4750463Abstract: An electronically regulated fuel injection system for an internal combustion engine with a switchable safety and emergency driving device has a mechanical coupling which mechanically couples the accelerator pedal to the regulator. This coupling operatively interferes with a mechanical connection between a controller and the final control element that determines the quantity of fuel to be injected, after a fault signal has been outputted by a signal processing unit to a switchover element, which switches over control of the final control element to the simple regulator.Type: GrantFiled: January 20, 1987Date of Patent: June 14, 1988Assignee: Daimler-Benz AktiengesellschaftInventors: Wolfgang Peter, Frank Thoma
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Patent number: 4735180Abstract: A centrifugal adjuster for a fuel injection pump governor having a driving part driven at an rpm in synchronism with the engine and having a torsionally elastically coupled flyweight holder guided in a rotational guide. Via a step, beyond a predetermined rotational deflection, the centrifugal adjuster displaces the flyweight holder axially with respect to the driving part, so that a jolt-like stroke effected by means of the step is superimposed on the regulating stroke effected via the flyweights of the centrifugal adjuster whenever the rpm is at a low level, for instance at idling rpm. As a result, a friction that leads to see-sawing of the engine and exhibits pronounced hysteresis is shaken out of the governor.Type: GrantFiled: June 10, 1986Date of Patent: April 5, 1988Assignee: Robert Bosch GmbHInventor: Manfred Kramer
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Patent number: 4729357Abstract: A control system for controlling an internal combustion engine which is provided with at least one fuel injection pump which comprises for the control of the fuel injection pump a control rod, a servomotor, which is adapted to be mechanically coupled to said control rod, and a microcomputer for controlling said servomotor in dependence on operating conditions of the engine and on the position of an arbitrarily operable travel control lever. Means are provided for establishing a direct mechanical connection between the arbitrarily operable travel control lever and the control rod so that the latter can be moved under the control of the travel control lever in case of a failure of the electric system which comprises the sensors, the microcomputer and the servomotor.Type: GrantFiled: September 10, 1986Date of Patent: March 8, 1988Assignee: Steyr-Daimler-Puch AGInventors: Otto Freudenschuss, Leopold Rollenitz, Josef Morell, Harald Schmidt
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Patent number: 4706627Abstract: A speed governor for injection pumps in internal combustion engines with a regulating sleeve which at maximum rotational speed of the internal combustion engine is displaced as a function of speed within the regulating sleeve travel against the force of the main regulating spring that acts on a force transmitting lever. The regulating movements of the force-transmitting lever are transmitted onto the fuel delivery adjusting member of the injection pump by means of at least one intermediate lever. The internal combustion engine rotational speed can be influenced by means of an operating element adapted to be controlled. In case of a needed change of the beginning of the full-load speed regulation of the internal combustion engine, the spring travel of the main regulating spring is influenced by means of a force-transmitting element.Type: GrantFiled: April 16, 1984Date of Patent: November 17, 1987Assignee: Daimler-Benz AktiengesellschaftInventors: Georg Eltze, Wendelin Kluegl, Frank Thoma
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Patent number: 4665873Abstract: In a double-lever type governor for fuel injection pump providing a governor lever and a tension lever, and securing a start fuel increment stroke in the governor lever by the help of a start spring; a governor for fuel injection pump providing a locking mechanism which connects said both levers at the time when the start fuel increment stroke of the governor lever becomes zero or approximately zero to be eliminated.Type: GrantFiled: November 22, 1985Date of Patent: May 19, 1987Assignee: Yanmar Diesel Engine Co., Ltd.Inventors: Yoshihiro Yogome, Sheizi Itsuki, Tokuzu Shimizu, Tsutomu Shimizu, Hisashi Hamada
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Patent number: 4664081Abstract: A fuel injection system for Diesel internal combustion engines, particularly vehicle Diesel engines, is proposed which has a full-load stop dependent on atmospheric pressure. The position of the full-load stop which adapts the injection quantity to the variable ambient air pressure is derived from an air pressure adjusting member and transmitted onto the full-load stop via a transmission member. A locking mechanism, which locks the transmission device in a plurality of positions counter to the force exerted by the full-load stop, is associated with the transmission member. The transmission member has two disks draggably coupled within a predetermined range, one of which disks is actuated by the air pressure adjusting member and the other of which disks cooperates with the full-load stop. The draggable coupling effects an adjustment of the full-load stop, if the full-load stop is relaxed, so that the air pressure adjusting member need exert no more than a small adjusting force.Type: GrantFiled: August 8, 1985Date of Patent: May 12, 1987Assignee: Robert Bosch GmbHInventors: Franz Eheim, deceased, Gerald Hofer, Max Straubel
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Patent number: 4656980Abstract: A centrifugal governor for an internal combustion engine, which includes a sensor lever adapted to engage a cam surface portion of a torque cam determining a starting fuel increment at the start of the engine to displace the control rack into a fuel increasing position, and a cancelling spring interposed between the torque cam and the tension lever and urging the torque cam with a force dependent upon the angularity of the tension lever in a direction of disengaging the sensor lever from the cam surface portion for interrupting the starting fuel increasing action of the governor. When the engine is in a starting condition, biasing means forcibly displaces the torque cam against the urging force of the cancelling spring to a predetermined position wherein the sensor lever can easily engage the cam surface portion, and holds same in the predetermined position for a predetermined period of time.Type: GrantFiled: July 10, 1985Date of Patent: April 14, 1987Assignee: Diesel Kiki Co., Ltd.Inventor: Masayoshi Ohkoshi
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Patent number: 4616616Abstract: A fuel control system (10 or 70) includes a hydraulic servo system (17) for moving a fuel rack (15) in response to movement of a rack control member (16). A brushless direct current torque motor (50), having a rotor (51) and a control lever (53) fixed thereto, is arranged with its lever end (54) confined between opposed shoulders (41, 42) on the rack control member (16). Electronically energized movement of the rotor (51) and its control lever (53) in one direction, or spring (56) biased movement in the other, causes corresponding movement of the control member (16) and fuel rack (15). A second control lever (99), movable by a mechanical governor control (80), is engageable with another shoulder (104) on the rack control member (16) to move it in a fuel-decreasing direction.Type: GrantFiled: August 29, 1983Date of Patent: October 14, 1986Assignee: Caterpillar Inc.Inventors: Waldema A. Staniak, Robert E. Samuelson, Michael E. Moncelle
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Patent number: 4612890Abstract: A centrifugal governor for an internal combustion engine, which includes a sensor lever adapted to engage a cam surface of a torque cam determining a starting fuel increment, at the start of the engine, to displace the control rack into a fuel increasing position, and a cancelling spring interposed between the torque cam and the tension lever and urging the torque cam with a force dependent upon the angularity of the tension lever in a direction of disengaging the sensor lever from the cam surface for interrupting the starting fuel increasing action of the governor.Type: GrantFiled: April 25, 1985Date of Patent: September 23, 1986Assignee: Diesel Kiki Co., Ltd.Inventor: Masanori Ohnishi
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Patent number: 4612891Abstract: An automatic governor device for automatically governing the delivery of an injection pump of a Diesel engine, in particular of the single cylinder type for use in motor vehicles, comprising a centrifugal mass governor with a spring for governing the delivery supplement at the starting stage, a spring for governing the idle rate of the engine, and a spring for governing the rates of higher values. Said device comprises a component capable of a holding the governor in its position of control of the highest delivery of the pump at a starting rate of the engine, higher than the idle rate, and of practically ceasing its influence on the govering action, in particular in the idle rate range, as soon as said starting rate has been reached.Type: GrantFiled: December 19, 1984Date of Patent: September 23, 1986Assignee: Piaggio & C. S.p.A.Inventor: Carlo Doveri
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Patent number: 4604977Abstract: A centrifugal governor for an internal combustion engine, which includes a sensor lever adapted to engage a cam surface of a torque cam determining a starting fuel increment, at the start of the engine, to displace the control rack into a fuel increasing position, and spring means interposed between the torque cam and the tension lever and urging the torque cam with a force dependent upon the angularity of the tension lever in a direction of disengaging the sensor lever from the cam surface for interrupting the starting fuel increasing action of the governor. The spring means comprises first and second springs, one of which is formed of a thermosensitive material having smaller and larger spring constants at a low temperature below a predetermined value and a temperature above the predetermined value, respectively.Type: GrantFiled: April 24, 1985Date of Patent: August 12, 1986Assignee: Diesel Kiki Co., Ltd.Inventor: Masanori Ohnishi
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Patent number: 4580538Abstract: There is proposed a speed governor for a fuel injection pump for internal combustion engines having a governor lever for setting the fuel injection quantity and a governor spring assembly arranged to engage the governor lever and counter to which an rpm-dependent force acts. To compensate for manufacturing tolerances of the governor spring assembly, it is also proposed that the effective length of a spring of the governor spring assembly be varied by realizing one of the supporting parts of the governor spring assembly as a multiple-part element. The supporting part is embodied such that it can be displaced by an adjusting lever in order to vary the pre-stressing of the governor spring, and that the first part is extended coaxially through it out of the interior of the fuel injection pump and can then be rotated in order to adjust the effective length of the governor spring and then fixed in an intended rotational position.Type: GrantFiled: February 12, 1985Date of Patent: April 8, 1986Assignee: Robert Bosch GmbHInventor: Franz Eheim
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Patent number: 4570588Abstract: Apparatus for controlling the quantity of fuel injected per shot or the beginning of fuel injection in a diesel engine comprises a control rod, which is adjustable by a stepping motor through the intermediary of a resiliently yieldable coupling. The control rod acts to control the injection pump or pumps. In order to provide a structurally simple apparatus which comprises a low-power stepping motor and to eliminate backlash between the cooperating elements of the apparatus, the shaft of the stepping motor carries a camwheel, which is indirectly engaged by the control rod, which is biased by a spring. The resiliently yieldable coupling can be coaxial with the camwheel and adapted to rotate as far as to stop only in one sense of rotation whereas the coupling is rigidly connected to the camwheel for a movement in the other sense of rotation.Type: GrantFiled: May 11, 1984Date of Patent: February 18, 1986Assignee: Steyr-Daimler-Puch AktiengesellschaftInventors: Gunther H. Herdin, Walter Hack
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Patent number: 4567870Abstract: A governor system for controlling the setting of a fuel control member of a fuel injection pump includes a manually operable member, a connecting device connecting said members, the connecting device being such as to allow movement of the fuel control member independently of the manually operable member. The system includes a pivot lever upon which acts a speed responsive device which moves the lever in opposition to the force exerted by resilient means in the middle speed range of the associated engine. The lever is connected to the fuel control member through a dash-pot device which acts in the middle speed range to adjust the setting of the fuel control member if there is a sudden change of engine speed. A high speed spring and an idling spring are also provided to provide a normal two speed governor action.Type: GrantFiled: October 13, 1981Date of Patent: February 4, 1986Assignee: Lucas Industries LimitedInventor: Brian W. Tumber
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Patent number: 4566414Abstract: A control system for an internal combustion engine which has a driving-pedal position transducer, a subsequent performance graph apparatus for control values and a control device responding to these values. A delay element is provided in series with the performance graft apparatus between the driving-pedal position transducer and the control device. The purpose of the control system is to adapt the mode of response of the control device (a throttle valve, for instance, in an Otto engine or the regulator rod in a Diesel engine) to various operational states. Of special significance are rpm, the position of the driving pedal, and the change in driving-pedal position. The proposed system is efficaciously realized by means of a computer.Type: GrantFiled: October 18, 1984Date of Patent: January 28, 1986Assignee: Robert Bosch GmbHInventor: Albrecht Sieber
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Patent number: 4498437Abstract: A centrifugal governor ensures a positive engine starting operation as well as a smoke control in the low engine speed range and a usual fuel injection control responsive to an increase in engine speed. A control rod with a rack is operatively connected with a floating lever through a spring biased piston and cylinder assembly, so that the control rod can be freely moved to its maximum fuel injection position during engine starting without being effected by a smoke limiter, which may be associated with the governor for a smoke control purpose. A unique lever mechanism is operable to move the control rod to the maximum fuel injection position during engine starting but, after a predetermined engine speed is reached, yields to a movement of the control rod in a fuel decreasing direction caused by the floating lever through the piston and cylinder assembly.Type: GrantFiled: December 6, 1982Date of Patent: February 12, 1985Assignee: Diesel Kiki Company, Ltd.Inventors: Masayoshi Ohkoshi, Yoshiro Suzuno
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Patent number: 4479474Abstract: The governor (FIG. 1) includes a second idling spring (supplementary idling spring 42) secured on a force transmission lever (31) acted upon by the main governor spring (34). By means of the second idling spring, the restoring force of a first idling spring (38) on a portion of the idling sleeve path (a) is reinforced in the idling position of an adjusting member (22). This exertion of force on the part of at least the supplementary idling spring (42) is increased in accordance with load by means of a corrective adjusting member (44) when the adjusting member (22) has pivoted into a partial-load position. As a result, in order to improve the starting behavior even in minimum-maximum speed governors, a partial-load rpm located above the idling rpm can be regulated, and a progressively increased supply quantity is controlled at the associated injection pump with increasing load in the lower partial-load range.Type: GrantFiled: June 28, 1982Date of Patent: October 30, 1984Assignee: Robert Bosch GmbHInventors: Ilija Djordjevic, Werner Br/u/ hmann, Ernst Ritter, Hansj/o/ rg Frey
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Patent number: 4426970Abstract: A resilient drive for a fuel injection pump governor comprising a resilient coupling connecting the governor speed sensing mechanism to the governor shaft. In a preferred embodiment, the governor flyweight assembly is rotatably mounted with respect to the governor shaft and is connected thereto by a resilient coupling which permits the limited momentary rotation of the flyweight assembly with respect to the shaft to dampen torsional vibrations.Type: GrantFiled: January 12, 1981Date of Patent: January 24, 1984Assignee: Ambac Industries, Inc.Inventors: Leon A. Galis, Richard J. Czarnik
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Patent number: 4421084Abstract: A fuel injection pumping apparatus includes a governor which controls the size of an orifice through which fuel is supplied to an injection pump to determine the amount of fuel supplied by the pump to an associated engine. The governor includes a piston which at one end is subjected to fuel pressure and which bears at its other end against a spring connected in series with a spring. The spring is weaker than the spring so that at idling speed it is the spring which balances the force acting on the piston. Manually operable means is provided to effect movement of an abutment disposed between the springs, the spring acting to determine the maximum speed of the associated engine. When the engine has been started from cold, it is desirable to provide additional fuel to enable the engine to idle properly and for this purpose a device represented by the arrow, moves the end of the spring remote from the spring and this provides a temporary increase in the amount of fuel supplied at idling speeds.Type: GrantFiled: March 17, 1978Date of Patent: December 20, 1983Assignee: Lucas Industries LimitedInventors: Brian E. Broadwith, Robert T. J. Skinner
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Patent number: 4380222Abstract: In internal combustion engines operated with fuel injection, particularly Diesel engines, of the type having injection pump (1) and injection nozzle (2) integrated to a constructional unit associated to one engine cylinder and having control of the fuel amount supplied by the pump effected by rotating the pump piston (4) provided with at least one oblique control edge giving free, in dependence on the rotational position, a back-flow bore for the fuel at an earlier or later moment, rotation of the pump piston is effected by means of a crank (11) having its crank pin extending parallel to the axis of the pump cylinder. The crank (11) is fixedly arranged on the driven end of the pump piston (4), i.e. either rigidly connected with the pump piston (4) or manufactured with the pump piston to form one single piece.Type: GrantFiled: October 15, 1980Date of Patent: April 19, 1983Assignee: Friedmann & Maier AktiengesellschaftInventor: Anton Pischinger
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Patent number: 4367709Abstract: A fuel governor for a diesel engine having a fuel pump mechanically driven by the engine. The system includes an idle speed governor comprising a hydraulically activated valve. A first fuel line connects the valve to the fuel pump and a second fuel line connects the valve to the fuel injectors. The valve is activated by increasing fuel pressure to decrease the flow of fuel through the fuel lines and is activated by decreasing fuel pressure to increase the flow of fuel through the lines.Type: GrantFiled: June 29, 1981Date of Patent: January 11, 1983Inventor: Ernest R. Codrington