Abstract: 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.

Abstract: A mechanical speed governor for internal combustion engines includes a centrifugal weight carrier and an arm means that extends through the top side of the upper engine housing. The arm means moves in response to movement by the centrifugal weight carrier to control the amount of fuel delivered for engine combustion. The governor arrangement avoids the oil seal and bell crank levers required in prior art devices.

Abstract: An improved control apparatus includes an auto-choke for an engine provided by interlocking a choke lever and a throttle lever of a carburetor by way of a temperature-sensitive interlocking rod. The choke lever of the carburetor is provided with a spring for resiliently biasing the choke valve toward its open position. The interlocking rod is made of high molecular material such as high molecular urethane elastomer or the like and has a buckling threshold which varies in dependence upon the temperature. Upon fully opening the throttle valve when the engine is cold, the interlocking rod acts so as to close the choke. Whereas, when the throttle valve is opened when the engine is hot the interlocking rod acts to open the choke under the biasing force of the spring. A speed regulating device is connected to the throttle lever.

Abstract: A governor device for an engine which is simple in construction and easy to adjust, and achieves precise and reliable control of engine speed without contacting the rotating portion of the engine. The governor device consists of a non-magnetic and electrically conductive disk which is rotated in synchronism with the engine; a swing member pivotally mounted for effecting a free-swing action thereof; a magnet mounted on said swing member and providing a magnetic field onto said disk for inducing an electromagnetic force to effect said swing action of the swing member in responsive to the rotation of said disk; a spring member for suppressing said swing action of said swing member in one direction; and a drive mechanism for operating a throttle valve of the engine in opening or closing direction in responsive to the swing action of said swing member.

Abstract: An improved governor mechanism for an engine having angularly related staggered cylinder banks. The governor mechanism includes a link or motion transmitting member that is disposed within the stagger between the cylinder banks so as to provide a compact assembly.

Abstract: A coupling apparatus for a speed regulator, or governor, of a typed used on motor vehicles for example, comprises a hollow connecting stud which is affixed to a governor positioning drive at a driven end telescoped to a hollow adjustment piece at a driving end. The hollow adjustment piece has a cap with an opening therein. A coupling rod passes through the opening having a driven end enlargement directed toward the governor positioning drive and a connecting apparatus at the other end connected to a speed adjusting apparatus. The coupling rod slides through the cap opening but the driven end enlargement is larger than that portion of the opening through which the coupling rod extends and can, therefore, not slide therein.

Abstract: Several embodiments of vehicles having automatic or manual speed control. The manual speed control permits the operator to control the speed of the engine and the automatic speed control is effective when a power takeoff shaft is being driven for automatic speed control under this condition. In each embodiment, the automatic speed control includes a governor that is driven only when the power shaft takeoff is being driven. In one embodiment, a throttle valve controls the engine speed and the manual and automatic speed controls alternatively operate the throttle valve through selectively engageable couplings that are operated in response to shifting into and out of the power takeoff mode. A number of other arrangements are also illustrated and described that provide different throttle valve arrangements for controlling the speed automatically or manually.

Abstract: A speed governing apparatus for an internal combustion engine. A plurality of flyweights are pivoted to a flyweight carrier mounted on the cam shaft of the engine and a surface of each flyweight is engaged with the end of a spool that is mounted for rotation with the cam shaft, but can move axially thereof. A spring loaded non-rotatable fork straddles the cam shaft and is engaged with the opposite end of the spool. The fork is secured to a rod which, in turn, is operably connected to the throttle of the engine. The end of the spool, against which the fork rides, is an undulating cam surface which results in the continuous axial oscillation of the spool, and corresponding continuous radial oscillation of the flyweights relative to the spool, during operation of the engine.

Abstract: A speed regulating governor system is disclosed for a small internal combustion engine having a throttle valve the position of which affects the speed of the engine, wherein the governor system includes a mechanical proportional controller and an electromechanical integral controller. The throttle valve is mechanically linked to and controlled by a governor lever that is acted upon by opposing forces provided by a mechanical speed selector and a centrifugal flyweight apparatus which measures the engine speed. Additonally, a solenoid actuator is operably connected to the governor lever to apply a force thereto in response to a control signal generated by an electronic integral controller. The control signal is proportional to the time integral of the difference between a desired electrical speed input and the actual speed of the engine measured by an electrical signal generated by an alternator driven by the engine.

Abstract: An engine/governor friction damper mechanism provides for a method of reducing hunting and searching in a governor controlled engine/generator set. The preferred method comprises a modification in a conventional arrangement utilizing a governor rod and pivotal connection with a crank arm on a throttle control assembly. Friction to pivotal movement of the governor rod with respect to the crank arm is provided by means of a spring-loaded friction washer member arrangement.

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.

Abstract: An anti-overrunning carburetion system which includes a carburetor with a throttle valve for opening and closing the venturi passage and a pressure responsive actuator having a pressure chamber for actuating the throttle valve to a closing position against a spring bias. A vibration responsive pneumatic pump, having also a pressure chamber, is connected to direct pressure directly to the pressure chamber of the actuator. A vibration sensor in the form of a spring backed ball is mounted to be subject to vibrations of an engine and is in communication with the pressure chamber of the pump and to atmosphere. In response to overrun conditions of the engine, the sensor will connect the pump pressure chamber to atmosphere and allow pressure to develop in the pressure chamber to be directed to the actuator, thus causing the actuator to reduce the throttle opening.

Abstract: An anti-overrunning carburetion system which includes a carburetor with a throttle valve for opening and closing the venturi passage and a pressure-responsive device for actuating the throttle valve to a closing position against a spring bias. A vibration responsive pneumatic pump is connected to direct pressure to the pressure responsive device and interposed between the pump and the pressure responsive device is a vibration sensor which will pass pressure from the pump in response to vibrations resulting from an overrun condition to effect a closing movement of the throttle valve.

Abstract: Several embodiments of vehicles having automatic or manual speed control. The manual speed control permits the operator to control the speed of the engine and the automatic speed control is effective when a power takeoff shaft is being driven for automatic speed control under this condition. In each embodiment, the automatic speed control includes a governor that is driven only when the power shaft takeoff is being driven. In one embodiment, a throttle valve controls the engine speed and the manual and automatic speed controls alternatively operate the throttle valve through selectively engageable couplings that are operated in response to shifting into and out of the power takeoff mode. A number of other arrangements are also illustrated and described that provide different throttle valve arrangements for controlling the speed automatically or manually.

Abstract: An intake system for an internal combustion engine comprises: an intake passage having an intake port and an inertial supercharging intake pipe leading from the passage; a rotary valve in the intake pipe and rotatable for opening and closing the intake pipe; and timing adjusting means for changing the opening timing of the rotary valve in accordance with engine speed.

Abstract: An anti-overrunning device for an internal combustion engine which includes a carburetor with a controlled throttle valve. An actuator for the throttle valve includes a spring-biased rod mounted on a diaphragm. The rod normally urges the throttle valve to a closing position. The actuator includes a pressure actuated diaphgram responsive to pressure from a vibrating pump. This pressure tends to open the throttle valve. A vibration sensor is positioned to relieve pressure on the diaphgram of the actuator and, in response to overrunning of the engine, causes the throttle valve to close in under the influence of the spring bias.

Abstract: An anti-overrunning system for an internal combustion engine having a throttle valve in a carburetor in which an actuator for the throttle valve is responsive to pump pressure to move the valve to a closing position. A vibrating pump responsive to engine vibration is located to direct output control pressure to the actuator. A control valve between the pump and the actuator normally blocks pressure to the actuator but is responsive to air pressure from an engine cooling fan such that, upon overrun conditions, the fan pressure will actuate the control valve to connect the pump to the actuator to cause the throttle valve to move toward a closing position.

Abstract: An anti-overrunning device for an internal combustion engine utilizing a carburetor with a throttle valve and a vibrating pump for generating pressure by vibrations of the engine. An actuator is provided for the throttle valve to move it to a closing position, and a control valve is used to control flow of pressure from the vibrating pump to the actuator. A generator driven by the engine provides electromotive force to actuate the control valve.

Abstract: A method of damping governor over compensation and searching is an engine/generator set comprises the provision of an eddy current damper in association with a governor member of the system. The preferred eddy current damper comprises a governor arm having an eddy current plate on one end thereof, the plate being oriented to move through a magnetic field generated by an industrial magnet mounted on the engine/generator set. As the governor arm moves in response to changes in engine speed the eddy current plate is passed through the magnetic field, the generated eddy current causing resistance to motion and a damping effect. Through a conventional linkage mechanism, the damping effect is translated to control of the engine throttle. As a result, over-compensation is generally reduced and/or searching is inhibited.

Abstract: A reduction gear axle apparatus includes a differential gearing assembly positioned for driving a pair of coaxially arranged driving axle shafts. The apparatus includes a rotary input shaft disposed for coupling with a prime mover having a power modulating device. A centrifugal speed control governor is fixed to the input shaft, and the governor is operatively connected to the power modulating device for control thereof as a function of axle shaft speed. In one preferred form, the governor comprises a pair of plates with a plurality of slide weights circumferentially spaced about the plates. One of the plates is fixed to the input shaft while the other is slideable thereon. At least one plate contains cam surfaces wherein as the weights are centrifugally urged outwardly of the input shaft axis, the slideable plate is axially moved away from the fixed plate.

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.

Abstract: The speed control actuator can be used to modify a control linkage fitted between an accelerator pedal and a carburetor or fuel injection pump on a vehicle engine. The actuator includes a forked lever which is mounted for rotation on the shaft of the fuel regulator, and a pulley which is mounted for rotation relative to the forked lever. The accelerator pedal is connected by means of a cable to the forked lever. Another cable passes over the pulley and is connected to a microprocessor controlled cable drive. The cable is advanced and retracted, in accordance with a vehicle speed related signal, to adjust the fuel regulator independently of the accelerator pedal. A preferred form of drive means is also described which employs a microprocessor producing a speed-related output in the form of a pulsating current of one polarity or another, and having a variable mark-to-space ratio, for driving a dc motor coupled to the actuator.

Abstract: A control device for a driven member includes a first input member connected to a manual member, an output member connected to a driven member, a middle member connected to the first input member through a first spring and having a first portion to be engageable therewith and a second portion to be engageable with the output member thereby to transmit the movement of the first input member to the output member through the middle member. The device further includes a second input member for moving the output member in operative and inoperative directions of the driven member and an actuator actuating the second input member wherein when the second input member is actuated by the actuator to move the output member in a direction where the driven member returns to the original position, the movement of the first input member will not affect the movement of the output member.

Abstract: A device for locking the throttle linkage of a vehicle comprises a bracket having a pair of aligned openings through which a rod of the linkage can pass. A lever pivotally mounted on the bracket has a free end for engaging the rod between the pair of openings so as to clamp the rod at that point and prevent actuation movement. The lever is moved by an air cylinder under control of a valve manually operable within the driver compartment. The driver therefore can adjust the engine rpm to an increased speed using the foot pedal and then lock the linkage at that position to allow the engine to run for a warming up period. The valve is then released to unclamp the linkage and allow normal driving movement of the linkage during operation of the vehicle.

Abstract: A governor mechanism particularly adapted for use in off the road vehicles wherein the governor is driven by an engine shaft other than the output shaft and one which is positioned in close proximity to the induction system for shortening the linkage interconnecting it to the engine speed control and for placing it in a location where it cannot become damaged. The governor is driven by the engine camshaft which operates the intake valve. In addition a disconnectable coupling is positioned between the governor shaft and the automatic speed control so that the governor can be driven continuously but the speed control can be selectively engaged and disengaged.

Abstract: The present invention relates to the technology to make use of the governor housing in the governor device for the air-fuel mixture suction type engine in common to that of a diesel engine. In the governor device of the present invention, the cover plate for closing the square hole formed in the governor housing is provided with the support hole, through which the shaft portion of the intermediate actuating lever is supported pivotably. The governor lever provided within the governor housing is linked to the throttle valve through the intermediate actuating lever. Therefore, in case that the cover plate to support the intermediate actuating lever is attached to the square hole, the governor housing can be utilized for the air-fuel mixture suction type engine. And in case that the cover plate to support the speed setting lever is attached to the square hole, the governor housing can be utilized for the diesel engine.

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.

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.

Abstract: A method for positioning a switch in a speed limiting device, wherein, for a limit switch, which interrupts the controlling process of the speed limiting device consisting of an electronic control unit, an electromechanical servo unit and a mechanical clutch arrangement, a positioning method is utilized and in order to carry out this method, an arrangement is provided in which the limit switch is fastened on a slide which is displaceably supported with the servo component of the speed limiting device. Arranged in the slide, which, in addition, carries a switchover contact bank serving to actuate the switch, there are provided locking bars with which, together with catch paths constructed at a housing of the servo unit, an exact fixing of the slide can be achieved at the end of the positioning process by means of reversing the rotational direction of the servo motor.

Abstract: A positioning device comprising a solenoid, said solenoid having a plunger slidable upon energization of the solenoid, a solenoid stop associated with said solenoid, a stem operatively connected to said plunger and extending through the movable stop to the exterior, an actuator connected to said solenoid stop and operable to move said stop to selected positions, such that when the solenoid is energized, the plunger is moved to engage the stop and move the stem to a predetermined position, the extent of movement being determined by actuation of the actuator to move the stop in predetermined positions.

Abstract: A carburetor is provided which has a main barrel in which there is a throttle which turns integrally with a shaft. An idle system opens into the main barrel through three holes; and a lever is splined to the shaft and connected to the accelerator to open the throttle against the action of a spring. Stop devices operate on the lever to define a first position of the throttle for which the holes are upstream. A second lever is idle mounted on the shaft. This second lever uses pushers and operates against the action of a rod positioned by a rotating cam with an electromagnetic element, or electronic gear box to rotate the first lever. This second lever defines, when the accelerator is released, small opening positions of the throttle differing from the first position. A microprocessor gearbox processes the signals expressing the functioning conditions of the engine to operate the electromagnetic element or electronic gear box.

Abstract: An engine governor having overriding means for limiting the flow of fuel to an engine, means for moving the overriding means to an intermediate reference position upon actuation of the governor, and means for moving the overriding means from the reference position to other positions for limiting the flow of fuel to that suitable for operating the engine at speeds close to a set speed. Means for actuating the governor before the engine reaches the set speed, means for moving the overriding means from the reference position to the other limiting positions at a very slow rate, and means for moving the overriding means toward limiting the fuel flow to a minimum when an over-running load causes the engine speed to run a predetermined amount above the set speed.

Abstract: An automotive type carburetor throttle valve actuator is automatically moved within two ranges to provide an idle speed control and a vehicle speed control; the moving mechanism including a compound planetary gear set operatively conditioned for a reduction drive to establish a slowly changing idle speed drive range, and conditioned for a direct drive to establish a faster changing vehicle speed level control range; a microprocessor sensing engine operating conditions for determining the operation of a reversible electric motor and a gear reaction member and clutching mechanism to determine the operating range as well as the speed level change.

Abstract: An override speed control for the carburetor of a small internal combustion engine such as used with lawnmowers. The control for preventing changes in speed of the engine while a speed control lever is moved into its choke position comprises a speed control lever, an intermediate or enabling lever and a throttle control lever. The three levers are interconnected by means of extension springs one each of which connects the intermediate lever respectively to the speed control lever and the governor lever. The speed control lever in the last increment of movement of its control range actuates the choke valve of the carburetor. The governor lever controls the throttle valve of the carburetor. A governor driven by the engine and responsive to engine speed is connected to the governor lever. Adjustable stop means are provided on the intermediate lever to positively stop movement of the intermediate lever during the last increment of movement of the speed control lever.

Abstract: A system for removing moisture and gases from the interior of a distributor. A moisture guard body (10) having an internal chamber (11) is connected in fluid communication with the interior of a distributor (30) and, through a selectively operable check valve (20) to the engine air intake means, such as to a spark arrester (40). During operation of the engine, both the cap (32) of the distributor and the moisture guard body are heated by the engine. When the engine ceases operation, the moisture guard body retains heat, cooling more slowly than the distributor cap. Moisture within the interior of the distributor is drawn into the warmer interior chamber (11), condensing there. Upon subsequent engine operation, a predetermined rate of flow of air through the spark arrester creates a low pressure which opens the check valve (20), providing a fluid path for evacuating the collected moisture and gases from the distributor.

Abstract: Disclosed is a carburetor containing an electromagnetic device for stopping a first lever, the first lever positions a throttle valve in one of two positions, each of which produces a small but different opening amount for the throttle valve. A common housing contains the electromagnetic device and an electronic control circuit operating it. A second lever operated by an accelerator pedal moves the first lever through a lost motion mechanism.

Abstract: A method for intake throttling for a diesel engine provided with an exhaust gas soot catcher, which also has an intake throttle valve for restricting intake air, thus heating the exhaust gases for purging the soot catcher. When the soot catcher is clogged with soot, throttling operation of the intake throttling valve is commenced after a first time period has elapsed after the point which represents the current operational condition of the diesel engine in a phase space whose dimensions are certain operating parameters of the diesel engine has transited from a first region representing non intake throttling combinations of these certain operating parameters to a second region, the complement of the first region, representing intake throttling combinations of these operating parameters; and/or such throttling operation of the intake throttling valve is ceased after a second time period has elapsed after this point has transited to this first region from this second region.

Abstract: A diesel engine is provided with an air throttle valve fitted in its intake system, which when operated to provide throttling action decreases the air flow in the intake system of the engine and increases the temperature of the exhaust gases of the engine, in order to heat up a soot particle catcher fitted to the exhaust system which thus is purged by combusting the accumulation of soot particles in it. When the air throttle valve is thus throttling the intake system and thus raising the temperature of the exhaust gases so as to purge the soot particle catcher, the amount of throttling provided by the air throttle valve is controlled, by comparing the pressure in the intake system downstream of the air throttle valve with a certain reference pressure, so as to keep this pressure in the intake system downstream of the air throttle valve substantially the same as this reference pressure.

Abstract: A throttle positioning device comprising a housing and a diaphragm in the housing dividing the housing into first and second chambers. The housing has an opening extending to the first chamber for connection to vacuum. A solenoid is associated with the housing and has a plunger acted upon by energization of the solenoid. The plunger is yieldingly urged by a light spring against a solenoid stop connected to the diaphragm such that the stop is movable with the diaphragm. A stem is adapted to be moved by the plunger and extends through the movable stop to the exterior of said housing to define a movable throttle stop. The throttle lever, attached to the throttle shaft of the carburetor yieldingly urges the throttle stop to a retracted position against the lighter spring force of the solenoid plunger. The diaphragm is yieldingly urged to move the movable solenoid stop toward the solenoid.

Abstract: An engine rotation speed control system which comprises an actuator for prescribing the recovery position of a throttle valve, a recovery position sensor for detecting that the throttle valve is returned to the recovery position, an idle speed control unit for controlling the engine to a predetermined idling speed, and a negative pressure restricting unit for controlling the throttle actuator such that reduction in intake negative pressure to below a predetermined negative pressure is prevented. When the throttle valve returns to the recovery position with the engine speed in excess of an upper limit of the idling speed, the actuator is controlled by the negative pressure restricting unit. When the engine speed falls below the upper limit, the idle speed control unit is actuated. Upon engine starting, the actuator is set such that the opening degree of the throttle valve suitable for the engine starting is obtained before the starter starts operating.

Abstract: An intake air throttling system for a diesel engine comprising an air intake passage. The system includes a throttling valve mounted in the air intake passage so as to selectively throttle air flow through it. This throttling valve can be positioned to at least a first position in which it substantially fully closes the air intake passage, a second position in which it partly throttles the air intake passage to a substantial extent but does not fully close it, and a third position in which it does not throttle the air intake passage to any substantial extent. The throttling valve is controlled by a control system, which positions it to the first position when the engine is being stopped, which positions it to the second position when the engine is being idled, and which positions it to the third position when the engine is being operated in non idling load bearing operational condition.

Abstract: An intake air throttle device, of a diesel engine, with a throttle valve disposed in an intake air passage. The throttle valve is moved into a full-open, an intermediate, and a full-closed position according to the engine operation.An actuator for the throttle valve is vacuum-operated. A temperature sensitive valve is disposed in a conduit connecting the actuator to the vacuum source, thereby the throttle valve is brought into the full-open position when the engine is cool for preventing white smoke in exhaust gas.

Abstract: A fuel injection system comprises a thermo-sensitive element adapted to expand and contract in response to the engine temperature, a cam adapted to rotate in response to expansion and contraction of the thermo-sensitive element, a lever rotatably supported by a throttle shaft and carrying an idle switch thereon. The idle switch is maintained at on-condition through angular moment of the throttle shaft in its closed direction when an acceleration pedal is released. The lever is rotated in association with the rotation of the cam with the opening degree of the throttle valve at idling operation being controlled by the lever so as to adjust the opening degree of the throttle valve at idling operation to suit with the engine temperature.

Abstract: Apparatus and method for expediting the starting of an internal combustion engine in which a vacuum-operated throttle actuator is controlled by a vacuum passage connected therewith and extending from an intake vacuum outlet located adjacent to the throttle valve. According to the invention, a second vacuum passage to the actuator communicates with the intake duct downstream of the throttle valve and a solenoid type switching valve is arranged between the two vacuum passages so that, when a warmed engine is restarted, the actuator is fed with vacuum through the second passage to actuate the throttle valve to a more open position than its normal idling position to yield a mixture of optimal air fuel ratio.

Abstract: A setting device for the controlled displacement of a stop connected with a setting member, particularly an idling stop of an internal combustion engine.The idling stop of the internal combustion engine should not be actuated by such a setting device when the internal combustion engine is intentionally operated at a speed of rotation above the idling speed. If it were, then the idling stop would be so displaced by a control electronic system during the intentional giving of gas that the internal combustion engine would run too slowly or die out upon the following idling. In order to avoid such displacement of the idling stop when the internal combustion engine is operating at travel speed without expensive interruption of the signal flow paths from and/or to the control electronic system, a clutch (3) is arranged between the stop pin and an electric motor as drive member. The clutch is connected with the stop pin (8) by a self-locking gearing (15).

Abstract: A vibration suppression system for a diesel engine, comprises a device for decreasing the amount of intake air to be inducted into the engine when operated. A heating device is provided to heat the intake air when operated. A first detecting device is provided to detect a low engine speed and low engine load operating range of the engine, to produce a first signal in response thereto. A second detecting device is provided to detect the level of vibrational acceleration of engine vibration having frequencies within a predetermined range, and to produce a second signal in response thereto. First and second control devices are provided respectively operate the intake air amount decreasing device in response to the first signal and the heating device in response to the second signal, thereby throttling intake air in the low engine speed and low engine load operating range while heating intake air when the vibration acceleration level is outside a predetermined allowable range.

Abstract: An intake throttling device adapted to a Diesel engine includes an intake pipe for connection to an intake manifold of the engine, a throttle valve arranged within the intake pipe, and an actuator operatively connected to the throttle valve and arranged to be deactivated to fully open the throttle valve during normal operation of the engine, to be rendered in its first activated condition to adjust the opening angle of the throttle valve during idling operation of the engine, and to be rendered in its second activated condition to fully close the throttle valve when the engine is arrested or immediately before the engine is arrested.

Abstract: A differential throttle linkage control for controlling the flow of fuel to an engine receives a main input from the throttle lever, and a second input from a trim actuator motor through a movable portion of a programmed split cam. The throttle control algebraically sums the inputs to produce a single output operably connected to the fuel metering device of the engine. The programmed split cam modifies or neutralizes the effects of the trim input through selected ranges of the throttle lever input stroke.

Abstract: A two-shift throttle control system for an automotive engine, comprising a lever to be actuated by an accelerator pedal, a pedal-actuated control cable anchored at one end to the pedal-actuated lever and pulled toward the lever when the pedal is depressed, a throttle actuator unit responsive to a selected vehicle speed and operative to produce a mechanical force variable with the selected vehicle speed, an automatically-actuated control cable connected at one end to the throttle actuator unit, a throttle actuator lever movable with the throttle valve in the fuel supply system of the engine, a throttle drive cable anchored at one end to the actuator lever, a stationary shaft, and first and second rotatable members rotatable on the shaft independently of each other, each of the pedal-actuated control cable and throttle drive cable being anchored at the other ends to the first rotatable member for driving the rotatable member to turn in one direction about the shaft when the accelerator pedal is depressed, the a

Abstract: A two-shift throttle control system for an automotive engine, comprising a lever to be actuated by an accelerator pedal, a pedal-actuated control cable anchored at one end to the pedal-actuated lever and pulled toward the lever when the pedal is depressed, a throttle actuator unit responsive to a selected vehicle speed and operative to produce a mechanical force variable with the selected vehicle speed, an automatically-actuated control cable connected at one end to the throttle actuator unit, a throttle actuator lever movable with the throttle valve in the fuel supply system of the engine, a throttle drive cable anchored at one end to the actuator lever, a stationary shaft, and first and second rotatable members rotatable on the shaft independently of each other, each of the pedal-actuated control cable and throttle drive cable being anchored at the other ends to the first rotatable member for driving the rotatable member to turn in one direction about the shaft when the accelerator pedal is depressed, the a