Abstract: A throttle position sensor is provided with a plurality of sensing elements which allow the throttle position sensor to provide a high resolution output to measure the physical position of a manually movable member, such as a throttle handle, more accurately than would otherwise be possible. The plurality of sensors significantly increases the redundancy of the sensor and allows its operation even if one of the sensing elements is disabled.

Abstract: An apparatus and method for controlling the speed of a vehicle, the apparatus manipulates a cable having one end secured to a throttle and the other secured to a motor for applying a force to the cable. A motor controller provides commands to the motor and the motor controller receives an input in the form of a vehicle velocity setting and in response to the value of the setting setting the motor controller instructs the motor to pull the cable a predetermined distance corresponding to a predetermined throttle position, the predetermined distance is stored in a lookup table and the predetermined throttle position corresponds to a vehicle velocity that is similar to the vehicle velocity setting.

Abstract: In a system of accelerating a car using a brake operating mechanism, the driver is required to be ready to step on the brake operating mechanism so as to rapidly decelerate the car in order to avoid danger, if necessary, while he is releasing his foot from the brake operating mechanism, which is a burden for the driver. Therefore, a footrest function range and a braking force increasing function range are provided to an operating amount or an operating force of a pedal 13.

Abstract: A control apparatus is provided in a vehicle equipped with a power source and a continuously variable transmission. The continuously variable transmission is connected to the power source. The control apparatus includes a target power determinator, a target revolutions determinator, a determining device, a setting device and a target torque determinator. The target power determinator determines a target power of the power source. The target revolutions determinator determines target revolutions on the basis of the target power. The determining device determines whether the vehicle is a transient driving condition or not. The setting device sets the target revolutions as setting revolutions when the determining device determines that the vehicle is not in the transient driving condition. The setting device sets revolutions different from the target revolutions as the setting revolutions when the determining device determines that the vehicle is in a transient driving condition.

Abstract: An informing apparatus is designed for use with a cruise control system having at least one of a function of inter-vehicle control for enabling a present vehicle to follow a preceding vehicle and a function of constant-speed travel control for enabling the present vehicle to travel at a constant speed. In the informing apparatus, a determination is made as to whether or not a main switch is in its ON position. The main switch is designed for setting a state in which the cruise control system can start to operate. A determination is made as to whether or not a set switch is in its OFF position. The set switch is designed for commanding execution of cruise control. A speed of the present vehicle and a setting lower limit vehicle speed are indicated on a contradistinction basis when it is determined that the main switch is in its ON position while the set switch is in its OFF position. The setting lower limit vehicle speed denotes a lower limit of a vehicle speed range in which the cruise control is enabled.

Abstract: An engine speed control system for a construction machine is arranged in association with its hydraulic circuit, which has main pumps, a communication line through which input ports of travel-controlling directional control valves are connected with each other, and a travel-controlling communication valve arranged in the communication line.

Abstract: A down-shift control system is provided, by which if sufficient torque cannot be obtained for an acceleration request or intention at a shift position, a down-shift operation is suitably performed so as to realize a reliable driving capability and no shift-busy phenomenon occurs.

Abstract: The present invention relates to an apparatus and a method for limiting the vehicle speed of a working vehicle which can provide a smooth traveling condition during vehicle speed limit, and which can set a vehicle speed limit suited to environmental conditions. To this end, a vehicle speed control device (10) judges a vehicle speed limit traveling period when a vehicle speed signal is equal to or greater than a vehicle speed limit value, to calculate a corrected depressing stroke signal by a control gain based on a deviation value between the vehicle speed signal and the vehicle speed limit value so that the deviation value becomes smaller to output to an engine control device (40), and judges an accelerated traveling period, when the vehicle speed signal is smaller than the vehicle speed limit value and the corrected depressing stroke signal is larger than a depressing stroke signal, to output the depressing stroke signal to the engine control device (40).

Abstract: An apparatus and a method for controlling engine speed in a motor vehicle engine (9) by an engine management system (1) with an engine control output (8,46). The engine management system (1) provides the following operations. A driver demand controller (38) responsive to an accelerator pedal (12) provides a first control signal (40) representative of a target engine speed. A cruise speed controller (22) responsive to a cruise control setting and vehicle speed provides a cruise signal (28). An idle speed controller (30) provides an idle signal (32). A combined idle-cruise speed controller (36) provides a second control signal (42) representative of a target engine speed which is responsive to the greater of the cruise signal (28) and idle signal (32). The greater of the first (40) or second (42) signals is selected to control (8,46) engine speed.

Abstract: The present invention involves a drive unit, specifically a drive unit for a motor vehicle having an internal combustion engine, a cooling system with fan, a transmission and a hydrodynamic retarder with a stator, rotor and housing. The retarder rotor is mounted on either the engine shaft or a crankshaft journal which is coaxial with the engine shaft. The retarder is located within a space bounded on one side by the front of the crankcase, on a second side by the fan shaft which runs parallel to the engine shaft, and on a third side by the rear edge of the fan wheel. Viewed from the front, the retarder is substantially located within the fly circle of the fan wheel whereby the air flow generated by the fan wheel removes heat, generated by braking actions, from the housing of the retarder.

Abstract: In a motor vehicle automatic transmission, for example, a GENERAL MOTORS THM 700-R4 automatic transmission, the throttle valve cable ("T.V. cable") forms a mechanical link between a throttle pedal, a throttle valve linkage on a fuel delivery system (e.g., a carburetor or electronic fuel injector) and a throttle valve. A sleeve and spring are installed at the distal end of the T.V. cable, between the cable end clamp and the tear-drop shaped cable end fitting on the T.V. cable. The spring opposes the movement of the cable end fitting toward the distal end of the T.V. cable so that the cable end fitting is at its maximum distal position only at fully open throttle. This gives the vehicle operator the shift feel of a shorter T.V. cable at most throttle openings. The sleeve and spring may be used in this manner only with automatic transmissions with T.V. cables that do not have end fittings permanently attached to a throttle cam.

Abstract: The present invention involves a drive unit, specifically a drive unit for a motor vehicle having an internal combustion engine, a cooling system with fan, a crankshaft and a hydrodynamic retarder with a stator, rotor and housing. The retarder is located within a space bounded on one side by the front of the crankcase, on a second side by the fan shaft which runs parallel to the engine shaft, and on a third side by the rear edge of the fan wheel. Viewed from the front, the retarder is substantially located within the fly circle of the fan wheel. Mounted to the crankcase and located between the crankcase, fan and retarder is an intermediate body which supports the retarder housing and stator, the fan, a regulator and switch for a generator, an idler pulley for a drive belt for auxiliary units and an air conditioning compressor.

Abstract: An electronic circuit for providing a momentary switch closure function output in response to operation of a control-request switch input to a closed condition and maintenance of the control-request switch input in closed condition for an amount of time greater than the time of the momentary switch closure function output. One use of the invention is as a single switch PTO enabler in conjunction with an electronically controlled internal combustion engine to provide a required momentary switch closure input to the engine electronic control for enabling the engine speed to change to a demanded speed.

Abstract: A control device for a sucked air quantity of an engine comprises an accelerator pedal opening degree sensor for detecting an opening degree of an accelerator pedal; a throttle valve opening degree sensor for detecting an opening degree of a throttle valve; a throttle valve actuator for controlling the opening degree of the throttle valve in accordance with outputs of both the accelerator pedal opening degree sensor and the throttle valve opening degree sensor; a first fully-closed state detecting switch for detecting a fully-closed state of the accelerator pedal; a second fully-closed state detecting switch for detecting a fully-closed state of the throttle valve; and an abnormality determining means for determining that the control device for a sucked air quantity is abnormal when the throttle valve is not in the fully-closed state in case that the accelerator pedal is in the fully-closed state.

Abstract: A retarding control apparatus for controlling operation of a retarder, which is connected to an automatic transmission, by operating a retarder actuating device by manipulation of a retarder changeover switch includes control unit, to which are inputted a shift position signal, a throttle opening signal and a changeover signal from the retarder changeover switch, for outputtig an operating signal to the retarder actuating device. When the control unit receives the changeover signal from the retarder changeover switch for actuating the retarder and decides that a manual downshift has taken place based upon the shift position signal and throttle opening signal, the control unit diminishes the operating signal to the retarder actuating device in such a manner that braking force produced by the retarder is reduced by a prescribed value.

Abstract: An engine brake for a multicylinder internal combustion engine includes valves that can be periodically opened briefly, in each case outside the exhaust stroke. In the vicinity of the applicable valve drive, a hydraulic piston is provided that is triggered synchronously with the engine rpm via an associated control line by a hydraulic pressure distributor fed by a pump. To improve the accuracy of control over the entire engine rpm range, the various valves are assigned a central positive displacement pump that runs synchronously with the camshaft rpm and whose outlet line leads to the hydraulic pressure distributor, which has a distributor disk. In engine braking operation, an alternating connection of the applicable control line to either the pump outlet line or a low-pressure region of the hydraulic control circuit is effected synchronously with the engine rpm by means of the distributor disk.

Abstract: A control system for automatically controlling the operation of a hydraulic system for heavy construction equipment. The system of this invention provides a controller optimally connected to sensors and to control devices on the hydraulic system so that it automatically and optimally preheats the engine coolant and the hydraulic fluid of the heavy construction equipment before a normal starting operation in order to reach to an optimal operating temperature in a relatively short time. The control system automatically checks the operating temperature of the engine coolant and the hydraulic fluid by temperature sensors, and alarms the operator to any overheat condition by an alarm device. The control system also automatically controls the operational mode in order to remove the overheat condition thus preventing the temperature of the engine coolant and the hydraulic fluid from rising above a predetermined temperature.

Abstract: An apparatus for use with an automotive vehicle including an internal combustion engine and an automatic transmission operable in a selected one of positions including "park", "neutral" and "drive" positions. A control signal is produced to limit the speed of the engine below a predetermined value when the transmission is in the "neutral" position. The control signal is interrupted when the transmission is in the "park" position.

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 engine brake system comprising, in combination, a power absorbing oil pump driven in operative linkage with the crank shaft of the engine and a mechanism for controlling discharge pressure of said oil pump is disclosed. The pressure control mechanism comprises a main valve designed to be opened with a lift inversely proportional to the braking torque of the engine, a mechanism for adjusting the pressure on the back side of the main valve and a valve for switching the pressure on the back side of the main valve, all of which are provided in a valve box having an oil hole communicated with the discharge port of the oil pump. According to this system, in accordance as the engine speed increases, the lift of the main valve is reduced to elevate the power absorbed by the oil pump. Thus, this system is particularly useful for engine brake for vehicles.

Abstract: A throttle valve comprising a first outer peripheral portion linearly contacting an inner wall of an intake passage at a predetermined throttle angle and a second outer peripheral portion formed in the vicinity of a throttle shaft in such a manner as to gently continue from the first outer peripheral portion and not contacting the inner wall at the predetermined throttle angle. With this arrangement, as there is defined a space between the second outer peripheral portion and the inner wall in the vicinity of the throttle shaft, the generation of scuffing and biting of the throttle valve against the inner wall may be prevented. Further, as the first outer peripheral portion of the throttle valve linearly contacts the inner wall at the closing position, the leakage of suction air upon full closing of the throttle valve may be suppressed.

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 V-type internal combustion engine in which cylinders each including a cylinder skirt portion projecting into a crankcase are arranged in a V-shape, a governor device is disposed within the crankcase, central axes of the cylinders are offset from each other in an axial direction along a crankshaft supported in the crankcase, and a rotational speed transmission system for transmitting a rotational speed of a governor gear to a governor lever shaft is engages a rearward side of the cylinder skirt portion of a cylinder spaced forward from a rearward most cylinder as viewed among the crankshaft central axis. A single intake manifold is adapted to bridge cylinder heads in a V-bank defined between the cylinders. A carbureter is in fluid communication with the intake manifold. One end of the governor lever shaft is disposed in the V-bank. An intake control for controlling the carbureter in cooperation with one end of the lever shaft is disposed in the vicinity of the carbureter.

Abstract: An illustrative embodiment of the invention provides a four cycle internal combustion engine that produces one power stroke for each full rotation of the crankshaft. Direct fuel and oxidizer injection into the cylinder permits engine speed and power to be controlled by varying the duration of the intake stroke. This duration is controlled, moreover, by moving the distributor housing in relation to piston top dead center position.

Abstract: A fluid device for vehicle fuel consumption enhancement including a body defining a compressible chamber therein the body is connected to the throttle linkage to be compressed responsive to movement of the vehicle throttle in the acceleration direction, the chamber housing a fluid therein which is adapted to be expelled through a fluid bleed orifice upon compression of the chamber to control the force of movement of the vehicle throttle, the bleed being preferably variable to control the speed of movement of the vehicle throttle, the device further including a fluid return providing a means for the return of the expelled fluid back into the chamber upon the deceleration of the vehicle throttle and further including a safety valve positioned in fluid flow communication with the chamber and adapted to allow instantaneous expelling of substantially all of the fluid from the chamber responsive to a predetermined large amount of force being exerted against the vehicle throttle and thereby against the compressible

Abstract: A fuel supply system for supplying fuel and for satisfactorily preparing the fuel-air mixture fed to a mixture-compressing, spark-ignited internal combustion engine which comprises an arbitrarily operable throttle element arranged in the air intake manifold wherein fuel can be supplied upstream of this throttle element. The throttle element is mounted on a rocking lever connected to a bearing shaft arranged outside of the air flow at the air intake manifold and is displaceable in the opening direction during full load and at higher speeds against the force of a compensating spring until the throttle element comes into contact, with a full-load stop, with the rocking lever. During full load and at low speeds, the compensating spring displaces the throttle element in the closing direction so that a rather large pressure drop occurs at the throttle element so that an improved conditioning of the injected fuel is obtained.

Abstract: A device for the control of the traveling speed of a motor vehicle with a regulating unit which is actuatable by the vehicle driver, particularly with a gas pedal, with electrical means for the transmission of the movement of the same to an element which influences the fuel-air mixture, particularly a throttle valve, with an electrical controller, the element which influences the fuel-air mixture being in operative connection with the output of the electrical controller, and with at least one comparator, one of the inputs of the comparator being applied with a voltage which is proportional to the rotational speed of the motor and its other input being applied with an adjustable constant voltage value for the rotational speed limitation. As a controller a PI controller is connected in parallel with a P-controller of great amplification.

Abstract: A two-stroke cycle gasoline engine including at least one two-stroke cycle power cylinder--piston assembly having two horizontally opposed pistons and incorporating uniflow scavenging, a reciprocating type scavenging pump means including at least one pump cylinder--piston assembly of the reciprocating type driven by the power cylinder--piston assembly in synchronization therewith, wherein the carburetor incorporates, in addition to a normal throttle valve, a control valve which automatically increases its opening as the rotational speed of the engine increases, so that, when it is set to provide its maximum opening at the maximum rotational speed of the engine, it provides gradually reduced opening as the rotational speed of the engine lowers.

Abstract: A motor brake control system for use on a motor having a motor brake retarder and a throttle fuel control is designed to respond to manual selection for sequentially retarding the selected cylinders in the motor. A transducer for sensing the speed of the motor is provided for generating a series of output pulses which access a high RPM detector and a low RPM detector. In the event that the motor exceeds a predetermined high RPM value, the brake control system activates all of the retarders to fully brake the motor. In the event that the brake retarders are on, either fully or partially, and the motor drops below a predetermined low RPM value, the brake retarders are released. Provision is made to prevent retardation of the motor as long as the throttle of the motor is being activated and retardation is further prevented after deactivation of the throttle until the fuel in the fuel delivery system has been consumed.

Abstract: A vehicle road speed control system is provided with a position feedback valve sensing position of the system servomotor power wall to modify the vacuum signal acting on the servomotor. One embodiment uses such a valve to control atmospheric air bleed, and another embodiment uses such a valve to control the vacuum supply.

Abstract: A safety arrangement for diesel engines to respond to an abnormal change of the ratio of the useful torque delivered by the diesel engine and the fuel quantity per power stroke. The latter is defined by the position of control rod of the injection pump. A transducer converts the control rod displacement into a mechanical or electrical control variable which is at least approximately proportional to the fuel quantity per power stroke. The control rod displacement is converted by a crank drive into a rotation of a correcting element, and the ratio of connecting rod length to crank radius is in the range between 6:1 and 8:1. The rotation angle of the correcting element is less than 90.degree. in the range between zero and full useful torque. The rotation angle range on either side of the crank position is 90.degree.. An electrical control variable may be generated by a transducer which is free of contacts and supplies a direct current signal proportional to the rotation angle of the correcting element.

Abstract: A resiliently deformable link is interposed between the throttle linkage and the throttle lever of a carburetor normally associated with a conventional internal combustion engine. The resiliently deformable member receives and stores energy during acceleration movements of the linkage and transmits the energy to the throttle lever for opening the throttle valve. A pneumatic restrictor such as a dashpot or bellows opposes the opening of the throttle valve in response to the resiliently deformable member. The rate of discharge of air into or from a chamber within the pneumatic restrictor modulates the rate of opening the throttle valve. Air flow is regulated by air bleed means which may be an adjustable atmospheric vented valve or other means responsive to engine manifold vacuum.Biasing means serve to urge the throttle lever toward a closed throttle position.

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.