Mechanical Connection Between Input And Speed Regulator Patents (Class 123/400)
  • Patent number: 4993385
    Abstract: In a carburetor of a motor vehicle engine having an accelerating pump for supplying additional fuel when an accelerator pedal is depressed to a large extent, the accelerator pedal is connected to a slider which is connected through an accelerating pump cable to a swing arm for actuating the accelerating pump via a link and a lever. The slider is connected also to a throttle lever through a throttle cable. The throttle lever is coupled to a throttle shaft of a throttle valve by means of a torsion spring. When the accelerator pedal is depressed, the throttle cable and the accelerating pump cable are pulled, and the control lever is turned to rotate the throttle shaft by way of the spring in a direction toward an open position of the throttling valve so that the engine is accelerated, while the accelerating fuel pump is operated through the swing arm, the link and the lever so that an increased amount of fuel is supplied by the pump.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: February 19, 1991
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Yasuhiko Miyamoto
  • Patent number: 4986238
    Abstract: A throttle control system for an engine of a vehicle provided with an acceleration slip control system and a constant speed running hold system which includes an output member for driving the throttle valve and connected to the accelerator. An actuator connecting member controls the output member and a control system detects and discriminates the operational position, constant speed running mode and operation of the actuator, respectively. Opening of the throttle valve due to erroneous operation of the control system can be prevented.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: January 22, 1991
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Tadashi Terazawa
  • Patent number: 4979478
    Abstract: A control cable which transmits a one-way compressive force in a first direction to actuate a fuel control and which exerts zero force in the return direction.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: December 25, 1990
    Assignee: Cable Manufacturing and Assembly Company, Inc.
    Inventor: William L. Sheppard
  • Patent number: 4971006
    Abstract: A throttle valve synchronizing mechanism for a plurality of throttle valves interconnected by a linkage system. The synchronizing system includes a pair of pivotally supported levers one of which is fixed for rotation with one of the throttle valve shafts and the other of which is connected to the linkage system. A locking screw arrangement holds the levers in adjusted positions and the locking screw rotates about an axis that is non-parallel to the axes of the levers.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: November 20, 1990
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Hirofumi Imaeda
  • Patent number: 4950965
    Abstract: A servoactuator for a vehicle throttle having a direct current motor driving a speed reducer with the output thereof connected to slidably move a fulcrum member having a lever arm pivoted thereon. The lever arm has a cable to the engine throttle connected to one end and a cable to the vehicle accelerator pedal connected to the other end on the opposite side of the pivot. In one embodiment the speed reducer drives an axial lead screw threaded in the fulcrum member. In a second embodiment the speed reducer output is a slotted crank arm having a pin on the fulcrum member slidably received therein. In a third embodiment the speed reducer output is connected by a two-bar linkage to the fulcrum member. A potentiometer is disposed to have the movable element thereof moved by one end of the lever to provide a throttle position feedback signal for use by an external motor control signal generator. The servoactuator is intended for use with a vehicle traction control system.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: August 21, 1990
    Assignee: Eaton Corporation
    Inventors: Andrew A. Kenny, Loren H. Uthoff, Donald R. Haefner
  • Patent number: 4945874
    Abstract: A throttle body for an internal combustion engine, comprising a suction passage for supplying a suction air to the internal combustion engine; a throttle valve provided in the suction passage and fixed to a rotatable throttle valve shaft so as to adjust a quantity of the suction air; an interconnecting lever rotatably mounted to an interconnecting shaft and adapted to be rotated by pulling an accelerator cable; a throttle valve operating lever mechanically connected to the interconnecting lever and fixed to the throttle valve shaft, the throttle valve operating lever being rotated in predetermined relational association with rotation of the interconnecting lever to open and close the throtle valve; and a tension spring for normally biasing the throttle valve in a valve closing direction, the tension spring having one end or pivotal point fixed to a part fixed to the throttle body and the other end or operation point fixed to the throttle valve operating lever; wherein the pivotal point and the operation point
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: August 7, 1990
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Tutomu Nishitani, Takio Suzuki, Yasuaki Kono, Tadamasa Osako, Sunao Kitamura, Youzou Sakakibara, Naruto Ito
  • Patent number: 4944268
    Abstract: The invention relates to an apparatus for varying the position of a fuel control device that controls the output of an internal combustion engine and is connected to an operating element via a transmission device. In such an apparatus, a control motor can be operatively connected via a gear with a first rotary element connected to the control device and rotatably supported relative to a coaxial second rotary element connected to the operating element. The two rotary elements are prestressed by a spring that forces an arm each to contact one another at stops facing one another.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: July 31, 1990
    Assignee: Robert Bosch GmbH
    Inventor: Werner Wilde
  • Patent number: 4928647
    Abstract: A throttle lever assembly for an internal combustion engine including a reliable substantially failure-proof dual acting--double breakover throttle lever is provided to maintain control over engine throttling in the event of certain types of failure of the vehicle throttle control or related structures. The throttle lever assembly is operatively positioned between an operator-actuated throttle control and the engine fuel supply system. A throttle link lever mounted for pivotal movement relative to the throttle lever is actuated by the throttle control to cause the throttle lever to rotate a throttle shaft between preset full throttle and idle positions. The throttle lever and the link lever include integrally formed tabs which hold a coiled torsion spring positioned to resist breakover, thereby normally maintaining the assembly in an axially aligned operating position.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: May 29, 1990
    Assignee: Cummins Engine Company, Inc.
    Inventors: Tibor J. Villanyi, Kevin W. Westerson
  • Patent number: 4919097
    Abstract: An engine output control system comprising an acceleration detector for detecting an amount of a stroke of accelerator and producing an acceleration signal in accordance with the amount of the stroke, throttle valve, electrical control mechanism for determining an electrical control signal to actuate the throttle valve in accordance with the electrical control signal, mechanical control mechanism mechanically linked with the throttle valve for actuating the same in accordance with the amount of the stroke, abnormality detector for detecting an abnormality of the electrical control mechanism, switch mechanism for producing a signal to switch a control for the throttle valve between the mechanical and the electrical control mechanism, and switching control mechanism for performing an actual switching action from the mechanical control mechanism to the electrical control mechanism based on the signal from the switching mechanism under a specific engine operating condition.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: April 24, 1990
    Assignee: Mazda Motor Corporation
    Inventors: Syuzi Mitui, Kouichirou Waki, Yasuhiro Harada
  • Patent number: 4909218
    Abstract: A clamp assembly for fixedly mounting the lower end of a remote speed control cable that controls the speed of a small internal combustion engine. The clamp assembly includes a casing clamp having a mounting member having a base plate with a first fastener receiving opening formed therethrough and a mounting plate spaced from one side of the base plate and interconnected therewith by a link member, and a clamp plate spaced from the other side of the base plate including a body portion having a second fastener receiving opening formed therethrough disposed in alignment with the first fastener-receiving opening. The clamp plate is movable toward the base plate by a fastener to permit clamping of a cable casing between the clamp plate and the base plate. The mounting plate includes a dimple projecting therefrom for engaging and stopping the fastener at a predetermined location as well as a pair of shoulders for properly locating the casing clamp on an engine mounting bracket.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: March 20, 1990
    Assignee: Briggs & Stratton Corporation
    Inventor: Arvo F. Uuskallio
  • Patent number: 4907553
    Abstract: A cable attachment assembly for coupling and uncoupling a cable to a throttle control system partially encased within a housing. The housing includes an opening aligned with a cable drum and a protrusion adjacent the opening. A cable cover assembly includes an integrally formed collar having a resilient member formed thereon with a first flap at its end. A second flap is integrally formed on the collar adjacent the first flap. During rotation in an assembly process, the resilient member is compressed as the first flap rotates along the protrusion. As the first flap passes the protrusion, the resilient member is outwardly deflected thereby locking the protrusion between the first and second flaps and, accordingly, locking the cable cover assembly to the housing.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: March 13, 1990
    Assignee: Ford Motor Company
    Inventor: David L. Porter
  • Patent number: 4896425
    Abstract: The motor saw has a rear handle connected to the body by vibration-damping elements with rubber or steel springs, and the throttle of the carburetor and the throttle control are connected by a rigid wire link. The throttle control bearing includes a shaft mounted in oblong holes to give a longitudinal play so that when the handle is moved with respect to the body, the throttle control can move the corresponding distance in the bearing without influencing the setting of the throttle in the carburetor in its idle position. When the handle is moved in this position, and a throttle opening is desired by moving the throttle control, a sliding part at the rear end of the throttle will contact a curved partition in the handle and push the throttle control to an advanced position, after which an opening of the throttle takes place by further movement of the throttle control.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: January 30, 1990
    Assignee: Aktiebolaget Electroleux
    Inventor: Soren N. Henriksson
  • Patent number: 4892071
    Abstract: In a throttle valve controlling apparatus, there is provided a pair of first and second throttle valves. The first throttle valve is rotated by an electrically controlled actuator means, whereas the second throttle valve is rotated by an accelerator pedal. A first return spring is provided on the first throttle valve so as to return this valve to a first closed position when the electrically controlled actuator means is brought into malfunction, by which an engine speed is rapidly reduced. Under this malfunction condition, the second throttle valve can be independently controlled by the accelerator pedal.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: January 9, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Yoshiaki Asayama
  • Patent number: 4889093
    Abstract: A throttle opening controller provided between an accelerator pedal and an engine throttle of an automobile. It has an output shaft driven by a motor, a motor lever fixedly mounted on the output shaft and ring members including an accelerator ring, a motor ring and a throttle ring all rotatably mounted on the output shaft. The accelerator ring is connected to the accelerator pedal and the throttle ring is connected to the throttle through wires. The motor lever is controlled by a traction control device. When the traction control is not activated, the motor lever is kept in its FULL-OPEN position, allowing the movement of the accelerator pedal to be transmitted as it is to the throttle through the accelerator ring, the motor ring coupled to the accelerator ring through a spring, and the throttle ring adapted to turn in the throttle-opening direction by and with the motor ring.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: December 26, 1989
    Assignees: Sumitomo Electric Industries, Ltd., Mazada Motor Corporation
    Inventors: Yukinori Nishiyama, Hideaki Fujioka, Hisaaki Yamaguchi, Toshiki Ikeda, Keisuke Miyoshi
  • Patent number: 4889006
    Abstract: A clamp for fixedly mounting the lower end of a remote speed control cable that controls the speed of a small internal combustion engine. The clamp includes a clip member removably attachable to the casing of the remote speed control cable and a mounting bracket on the engine for receiving and removably mounting the clip member thereon. The clip member is U-shaped with each side of the U having a bifurcated end defining a pair of legs having a cable receiving open therebetween dimensioned to tightly engage the casing of the cable. In one form, the mounting bracket includes a pair of horizontally extending and vertically spaced apart support ears having aligned clip receiving openings for snugly receiving the clip member, and in another form the bracket includes an upstanding support member about which opposite sides of the U-shaped clip member are disposed.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: December 26, 1989
    Assignee: Briggs & Stratton Corporation
    Inventors: Edmund C. Kolinske, Arvo F. Uuskallio
  • Patent number: 4884544
    Abstract: A control cable which transmits a one-way compressive force in a first direction to actuate a fuel control and which exerts zero force in the return direction.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: December 5, 1989
    Assignee: Cable Manufacturing and Assembly Company, Inc.
    Inventor: William L. Sheppard
  • Patent number: 4881503
    Abstract: Throttle cable control assemblies for carburetors for adjustably mounting the throttle (accelerator) cable on the carburetor. A bracket body is mounted on the carburetor and includes a projecting arm having a post. A clamp assembly frictionally engages the post and throttle cable. The clamp assembly is capable of being pivoted on and movable along the post for adjustment.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: November 21, 1989
    Inventor: Norman H. Andreasen
  • Patent number: 4875449
    Abstract: In order to prevent troublesome load change shocks in an internal combustion engine for a vehicle, the power control element thereof consists of an adjustment lever operationally positioned between two spring stops. The first spring stop provides elastic transmission of accelerator pedal commands from a fuel control cable and the second spring stop, which comprises a stronger spring, is effective only after the adjustment lever moves through a preset free path and engages a support fixed on the housing. As a result, during a fuel control cable motion defined by the first spring stop, the adjustment lever is not moved, whereas thereafter, during a further fuel control cable motion, the adjustment lever is moved since the force of the spring associated with the second stop is overcome.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: October 24, 1989
    Assignee: Volkswagen AG
    Inventors: Karl-Martin Kramer, Richard Dorenkamp
  • Patent number: 4873957
    Abstract: A throttle valve control apparatus for opening and closing a throttle valve for a vehicular engine by an electronically controlled actuator is provided, for the purpose of enabling the control of the throttle valve upon the disablement of the electronically controlled actuator, with return springs (5), (14), (19) provided for a valve shaft (3) for the throttle valve (2), a first drive gear (7) interconnected to an accelerator pedal (13), and a second drive gear (8) driven by the electronically controlled actuator (17), respectively.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: October 17, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshiji Ueyama, Yoshiaki Asayama
  • Patent number: 4860608
    Abstract: A control device for a vertical shaft type engine controls the engine by a single manipulation or acceleration control lever from stoppage to choking. The control device includes a first control lever and a second control lever which are relatively rotatable and can rotate jointly within a predetermined range. The first control lever is connected to a governor spring and is rotatable between an engine stop switch terminal and a highest speed rotation regulating screw. The second control lever is provided with a connecting section for connection to a Bowden wire which is in turn connected to the manipulation or acceleration control lever on a working machine, a pair of engaging sections for engaging with the first control lever and phase-shifted by 180.degree. from each other, and a pair of contact sections for contacting a choke lever and phase-shifted by 180.degree. from each other.
    Type: Grant
    Filed: January 12, 1988
    Date of Patent: August 29, 1989
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventor: Kazuyuki Kobayashi
  • Patent number: 4860708
    Abstract: A control system for a throttle valve in automotive internal combustion engines in which the throttle valve is both mechanically linked with an accelerator pedal and also connected with an actuator such as a pulse motor for fine-adjusting the opening of the throttle valve in the closing direction in accordance with the operating state of the engine after it has been opened through the mechanical linkage. A spring is inserted in the mechanical linkage system between the accelerator pedal and the throttle valve. The provision of the spring substantially isolates the accelerator pedal from forces acting in other parts of the system so that the operator does not feel an unnatural change in the amount of pressure needed to depress the accelerator pedal when the actuator goes into operation.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: August 29, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kouji Yamaguchi, Yoshikazu Ishikawa, Toshihiro Kameda, Shogo Hattori, Junichi Miyake
  • Patent number: 4856477
    Abstract: A throttle control system has means for coupling an accelerator position detector to a throttle servo system which drives a throttle valve to an angular position corresponding to the accelerator position detected by the accelerator position detector in normal mode throttle angle control. The system also has means for returning the throttle valve to an initial and fully closed position when operational force for the accelerator is released or when failure of the throttle servo system is detected. This throttle returning means is operable independently of the accelerator position detector in throttle returning operation for providing quicker response which is particularly required in fail-safe mode operation.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: August 15, 1989
    Assignee: Nissan Motor Company, Limited
    Inventors: Motoyoshi Hanaoka, Akira Nakamura
  • Patent number: 4850318
    Abstract: An automatic speed control mechanism for an outboard motor that is compact in configuration so that it will fit within the outer cowling of an outboard motor and not intrude into the engine space. In addition, the automatic speed control includes a program that will provide a malfunction indication in the event the automatic speed control functions when it is not intended.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: July 25, 1989
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Katsumi Torigai, Masanori Takahashi
  • Patent number: 4838225
    Abstract: A throttle regulator for the throttle of a combustion engine of an automotive vehicle for controlling the traction slip or the speed. The throttle regulator comprises two devices influencing the position of the throttle in an adding manner. The first device is operated by the driver such as by means of a pedal, and the second device is a servomotor operated on the basis of an electronically formed signal, with the basic position of the second device corresponding to a mid-position wherein the position of the throttle is influenceable both in the closing and in the opening directions. A first signal is electrically provided which corresponds to the throttle position. The first signal is compared to a reference signal provided by control electronics and an output signal is applied to the servomotor until the first signal and the reference signal conform to one another.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: June 13, 1989
    Assignee: Alfred Teves GmbH
    Inventor: Helmut Steffes
  • Patent number: 4829961
    Abstract: This invention provides a control for regulating the throttle and spark timing of a spark ignition internal combustion engine having an operator controlled device, a fuel/air mixing device, and a spa LN
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: May 16, 1989
    Assignee: Outboard Marine Corporation
    Inventors: Stephen J. Towner, Robert L. Turk
  • Patent number: 4823752
    Abstract: A clamp for fixedly mounting the lower end of a remote speed control cable that controls the speed of a small internal combustion engine. The clamp includes a flat base plate having a first fastener receiving opening formed therethrough, a clamp plate spaced from the base plate including an upper flat body portion having a second fastener receiving opening formed therethrough disposed in alignment with the first fastener receiving opening and a lower arcuate cable receiving portion, and a deformable link member connecting the upper ends of the base plate and clamp plate. The link member is collapsible upon movement of the clamp plate toward the base plate by a fastener to permit clamping of a cable casing between the arcuate portion and the base plate.
    Type: Grant
    Filed: February 23, 1988
    Date of Patent: April 25, 1989
    Assignee: Brigg & Stratton Corporation
    Inventor: Arvo F. Uuskallio
  • Patent number: 4811712
    Abstract: An air intake apparatus for use in a spark-assisted diesel engine having a throttle valve mounted in an air intake connector connected with an air intake system of the engine, and a throttle valve actuating mechanism connected with a fuel regulating mechanism of the engine so that the throttle valve may be actuated or turned in the direction of throttling when the engine is operating at a partial load condition. The throttle valve actuating mechanism is connected through a mechanical device or the combination of the mechanical device and an electric device with the fuel regulating mechanism of the engine.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: March 14, 1989
    Assignee: Kabushi Kaisha Komatsu Seisa Kusho
    Inventor: Koichiro Itow
  • Patent number: 4799468
    Abstract: In a motor saw with an engine unit separated from a handle system by devibration elements, difficulties arise by in the use of a link system of iron plate or lever elements in performing a movement transfer without "backlash" etc. As a consequence thereof there is an involuntary speeding of the engine, great inherent moving play, propagation of vibrations between the carburetor and the finger grip, and sizing of elements adapted to every saw model. The invention eliminates these inconveniences by introducing a gear-driven, flexible shaft, e.g. a tightly wound helical spring which can transfer movements to the throttle by turning. The influence of relative movements between the engine and the handles can thus be eliminated.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: January 24, 1989
    Assignee: Aktiebolaget Electrolux
    Inventor: George N. Farquhar
  • Patent number: 4798185
    Abstract: The pivotally mounted throttle lever on a gasoline engine powered flexible line trimmer has a flexible arm portion which is linked to the engine's pivotally mounted carburetor throttle arm by an elongated cable structure. When the linkage structure is in a "short" portion of its lengthwise dimensional tolerance range the throttle lever stroke distance is greater than that required to move the throttle arm to its fully open, actuated limit position in which it is stopped by an abutment surface. The throttle lever, when the throttle arm has been moved to such limit position, thus still has an unused position of its total available stroke distance. When the lever is forcibly driven through this remaining stroke portion, the flexible connecting arm is resiliently bent relative to the balance of the throttle lever to thereby avoid undesirably high stress levels in the throttle lever, the linkage cable and the carburetor throttle arm.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: January 17, 1989
    Assignee: White Consolidated Industries, Inc.
    Inventor: Bernard M. Driggers
  • Patent number: 4796579
    Abstract: An automotive type internal combustion engine has an air throttle body for providing air to the engine for combination with fuel injected to define a fuel air charge; the air throttle body having primary and secondary air passages controlled by throttling valves, the primary passage being a drive-by-wire electrical system in which the throttle valve is moved electrically in response to movement of the vehicle accelerator pedal, the secondary passage being controlled by a throttle valve that has a direct mechanical connection to the vehicle accelerator pedal to be operative at wide open or near wide open throttle positions of the accelerator pedal to not only supply additional air for wide open throttle operation, but also to supply sufficient air to sustain engine operation in the event of inoperativeness of the electrical system or the actuator/motor affecting movement of the primary throttle valve.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: January 10, 1989
    Assignee: Ford Motor Company
    Inventors: Brian C. Wolfe, Thomas D. Wernholm
  • Patent number: 4788955
    Abstract: Disclosed herein is a throttle control assembly for positioning the throttle valve of an internal combustion engine of the type including a cam movable in accordance with desired engine speed changes, the throttle control assembly comprising a mechanism coupled to the throttle valve and including a member coupled to the cam for opening the throttle valve in response to movement of the member in a first direction and for closing the throttle valve in response to movement of the member in a second direction, and a relative movement mechanism for preventing continued opening of the throttle valve beyond a predetermined position despite continued movement of the member in the first direction.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: December 6, 1988
    Assignee: Outboard Marine Corporation
    Inventor: Le Roy T. Wood
  • Patent number: 4787353
    Abstract: A throttle valve control apparatus for an internal combustion engine uses a target throttle valve opening which is selected between one of a first opening valve determined according to the operation position of the accelerator pedal and a second opening value smaller than the first opening value. When the target throttle valve opening is switched from the second opening value to the first opening value, the driving speed of the throttle valve by a drive mechanism of the apparatus is controlled so as to maintain smooth operation of the engine.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: November 29, 1988
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Ishikawa, Kouji Yamaguchi
  • Patent number: 4773371
    Abstract: An override speed control mechanism for an internal combustion engine. The override speed control mechanism comprises an engine control lever connected to a governor control arm by means of an over-center linkage mechanism so that further rotation of the engine control lever beyond the high speed range into the choke range acts to reduce tension on the governor spring. The mechanism also includes a governed idle whereby the position of the governor control arm can be adjusted in the idle position to set the tension on the governor spring.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: September 27, 1988
    Assignee: Tecumseh Products Company
    Inventor: Kenneth J. Stenz
  • Patent number: 4748956
    Abstract: The control of a quantity of supply fuel to allow the air-fuel ratio of a gas mixture to be a target air-fuel ratio is conducted by switching between an open loop control and a feedback control using an air-fuel ratio sensor, in response to an operating state of the engine. At the time of the feedback control, a learning correction is carried out using a learning value calculated on the basis of the feedback correction value. At the time of the open loop control, the quantity of the supply fuel is corrected in accordance with the feedback correction value and the learning value immediately before shifting from the feedback control to the open loop control.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: June 7, 1988
    Assignee: Mazda Motor Corporation
    Inventor: Masato Iwaki
  • Patent number: 4721281
    Abstract: An actuating device is proposed which is used to adjust a throttle valve disposed in the intake tube of an internal combustion engine. The actuating device includes a gas pedal adapted to engage an actuating lever, which is supported rotatably relative to a throttle valve shaft, so as to pivot counter to the force of a restoring spring. Connected to the actuating lever is a follow-up drawing spring, which is secured with one end to an intermediate lever provided with a cam disk having a curved camming surface which surface a lever arm is supported so as to operate a damper element. The intermediate lever is rotatably supported with respect to the throttle valve shaft and with a coupling stop engages a throttle valve lever, which is connected to the throttle valve shaft such that relative rotation between them is prevented. The throttle valve lever is drawn against the coupling stop by means of an uncoupling spring disposed between the intermediate lever and the throttle valve lever.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: January 26, 1988
    Assignee: Robert Bosch GmbH
    Inventors: Alfred Kratt, Hermann Nusser, Gunther Plapp, Helmut Schwarz
  • Patent number: 4660521
    Abstract: A speed control lever is provided to position a throttle valve at a first position for providing a low engine speed for a low frequency output from a generator driven by the engine, and an operating lever is rotatably provided. A spring is provided to urge the operating lever in opposite directions with respect to a neutral position. When the operating lever is rotated in one of the directions, the lever engages with the speed control lever to rotate the speed control lever to a second position for providing a high engine speed for a high frequency output from the generator.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: April 28, 1987
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Masaaki Higuchi, Masaru Atsuumi
  • Patent number: 4643148
    Abstract: This invention discloses apparatus for controlling the throttle of an aircraft engine so that it is either in the fully automatic electronic fuel control mode or in the completely manual mode while using a single throttle lever. In the event of a power failure in the aircraft, automatic reversion to the manual throttle control mode of operation is provided. The apparatus for achieving this consists of an outer housing shell having a lever arm extending radially therefrom, the outermost end of the lever arm being pinned to a source of translational motion such as provided by a push rod attached to the manual throttle lever. Within one end of the outer housing shell there is an output spool having on its outward facing end a boring sized to accommodate the throttle shaft of the engine fuel metering system. An input spool is mounted for rotation within the second end of the outer housing shell. The outward facing end of the input spool is secured by a shaft to the electronic fuel control equipment.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: February 17, 1987
    Assignee: Avco Corporation
    Inventor: Stanley T. Jedrziewski
  • Patent number: 4566415
    Abstract: Several embodiments of engine speed control mechanisms that permit the running speed of an engine to be maintained at a predetermined value. The mechanical components of the system include a linkage system that connects an operator position throttle control with the throttle valves of the engine and that incorporates a lost motion connection so that the throttle valves may be positioned independently of the operator throttle control to maintain the speed control. In one embodiment of the invention, the throttle and speed control mechanism is mounted on the engine while in another embodiment, these components are mounted remotely from the engine. In one embodiment of the invention, a control circuit is provided that prevents hunting.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: January 28, 1986
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Tomio Iwai, Katsumi Torigai
  • Patent number: 4530326
    Abstract: A device for the transmission by electrical transmission means 2 of the set-point between an idling position and a full-gas position of an electrical set-point adjuster 1 which is displaceable by the driver of a vehicle by means of a regulating unit, and controls the speed of travel of the vehicle by a control element 4 which is displaceable in corresponding manner between an idling position and a full-gas position. The control element is coupled to a control member 6 which controls the fuel-air mixture of an internal-combustion engine. Between the set-point adjuster 1 and the control element 4 there is arranged a mechanical transmission element 7 which can be coupled with the set-point adjuster 1 and the control element 4 and by which the position of the set-point adjuster 1 can be transmitted to the control element 6.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: July 23, 1985
    Assignee: VDO Adolf Schindling AG
    Inventors: Arnold Mann, Gerhard Ruschek, Reinhard Zenker
  • Patent number: 4524741
    Abstract: A preset throttle release device for use on drag racing cars to manually set a throttle linkage position at a desired setting restricting the maximum engine rpm at the beginning of a race. The device once set can be released providing a full range of throttle position once the race has begun.
    Type: Grant
    Filed: May 10, 1984
    Date of Patent: June 25, 1985
    Inventor: Ronald W. Corbi
  • Patent number: 4463719
    Abstract: An air-compressing, self-igniting combustion engine for liquid fuels, in an arrangement that includes a combustion chamber depression in a piston for receiving injected fuel predominantly in the vicinity of the wall thereof and for receiving rotating combustion air at the time of fuel injection. Oxygen-containing fuel that is reluctant to ignite is injected through a first injection device into the combustion chamber depression; through a second injection device there is injected fuel that is willing to ignite, for instance oil fuel, gas oil or Diesel fuel, for initiating and/or maintaining the fuel combustion in the combustion chamber depression. Furthermore, the injection times of the fuel that is willing to ignite and the oxygen-containing fuel that is reluctant to ignite overlap each other. The first and second injection nozzles each are arranged with an injection pump and are rigidly coupled and have a common injection adjuster. Both injection nozzles are combined in a single-nozzle body.
    Type: Grant
    Filed: September 24, 1981
    Date of Patent: August 7, 1984
    Assignee: Franz Pischinger
    Inventors: Franz Pischinger, Cornelis Havenith
  • Patent number: 4453516
    Abstract: A device for controlling the throttle valve of an internal combustion engine accepts input signals representative of vehicle velocity, gearshift position and roadway temperature which by logic means generates a first signal which is employed to modify a second signal received from a desired value generator which is under the control the gas pedal, the signal so modified being employed to control the throttle valve or injection pump position for the internal combustion engine wherein at idling speeds a large change in the accelerator pedal position effects a small change in the throttle valve position which control changes to effect an increasingly degressive transfer characteristic wherein a small change in accelerator pedal position effects a large change in throttle valve position as the vehicle velocity increases to a high velocity.
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: June 12, 1984
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventor: Reinhard Filsinger
  • Patent number: 4450807
    Abstract: A suction air throttling device of a diesel engine in which a throttle valve is opened or shut along with the accelerator operation, wherein there is arranged a link connected with an accelerator pedal and opening or shutting the throttle valve in accordance with depression of the accelerator pedal, the rotating axis of the link being positioned eccentrically from the rotation center of the throttle valve shaft, so that the opening degree of the throttle valve is larger in the small opening degree zone of the link and the opening degree of the throttle valve is smaller in the large opening degree zone of the link, whereby the characteristic curve between the opening degrees of the throttle valve and the accelerator is a convex line.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: May 29, 1984
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takahiko Kinoshita, Nobuhiko Kakeno, Nobuhiro Miura
  • Patent number: 4424785
    Abstract: A fuel feed system of a fuel priority type for an internal combustion engine. The fuel feed system of the invention has a small auxiliary control unit with no calculation function in addition to a main control unit. When the main control unit malfunctions or is out of order, it is changed over to the auxiliary control unit which insures injection, for instance, at a constant air fuel ratio and in proportion to the degree of movement of an accelerator pedal. Therefore, even when the main control unit is out of order, the driver can drive his vehicle safely to a service station, etc., without stopping the engine. When the main control unit is in a normal state, the main control unit performs engine air control (EAC) at a variable air fuel ratio in the entire range of operation.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: January 10, 1984
    Assignee: Mikuni Kogyo Kabushiki Kaisha
    Inventors: Takashi Ishida, Noboru Tominari
  • Patent number: 4411234
    Abstract: A fuel system for an internal combustion engine includes a fuel processing unit having at least one foot-actuated, split butterfly valve for controlling induction airflow and a plurality of fuel injectors for spraying fuel into the induction airflow. The split butterfly valve in the fuel processing unit includes a pair of butterfly flaps which rotate in opposite directions in response to throttle movement to insure symmetry of induction airflow through the unit. The butterfly valve is connected to the throttle by a tangential linkage which gradually increases the rate of valve opening responsive to throttle movement to provide smooth response characteristics. The fuel is injected at a temperature and pressure drop selected to produce flash vaporization of the major portion of the fuel in order to promote complete combustion.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: October 25, 1983
    Assignee: Advanced Fuel Systems
    Inventor: Harold G. Middleton
  • Patent number: 4385604
    Abstract: Controls are provided to directly or indirectly avoid operation of the internal combustion engine of a motor vehicle in a range of speed and output power which is detrimental to engine efficiency. The controls become operative upon attainment of a predetermined limit value for engine parameters.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: May 31, 1983
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventor: Ernst Fiala
  • Patent number: RE31233
    Abstract: The invention disclosed embraces a charge forming method of and apparatus embodying an instrumentality responsive to engine vibrations or disturbances brought into operation when the engine reaches a predetermined speed to automatically deliver excess fuel to the engine thereby momentarily providing a nonignitible mixture preventing overspeeding of the engine.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: May 10, 1983
    Assignee: Borg-Warner Corporation
    Inventors: Warren D. Nutten, Bernard C. Phillips