Abstract: FIG. 1 schematically shows a fuel control system for a fuel injected engine. The system includes two vacuum control circuits, essentially identical in valve structure. One circuit controls the recirculation of exhaust gases into the engine intake manifold 14 and a change in engine ignition timing in response to engine throttle valve 34 angle by a regulator 310, in response to changes in engine temperature by a signal reducer 312, and in response to engine load by a manifold vacuum sensitive valve 314. A second circuit controls the engine fuel injection pump fuel flow rate as a function of changes in throttle valve angle by a valve 420, engine temperature levels by a valve 422, and load levels by a valve 424 to adjust an engine air/fuel ratio controller 52 to maintain either a base air/fuel ratio or air/fuel ratios as called for by the particular engine operating conditions.

Abstract: This invention provides for controlling vehicle fuel feed, which may be either carburetion type or fuel injection type, by electro-stress control means with the electro-stress means being oriented in the power flow drive train of the vehicle between the engine and the drive wheels. As more load and torque is placed upon the engine through the drive train the control structure of this invention will automatically increase the input of fuel to the engine in a steady accurate manner. In one embodiment of the invention a diaphragm-type capacitance transducer is utilized, while in the other embodiment a torquemeter device is used. Both embodiments include a rheostat actuated by the accelerator pedal of the vehicle, which leads from the battery of the vehicle to an electric servomotor and solenoid which when activated, connects the leads from the electro-stress means to the servomotor when the accelerator is depressed.

Abstract: An adjusting device for controlling the position of a gas lever in a motor vehicle in cooperation with a speed controlling servo-mechanism arranged in the vehicle for delivering a control signal, comprises an electromotor energized by the control signal, a shaft supported on a support for rotation about its axis and for movement along its axis, an electromagnetic coupling having a disc-shaped armature rotatably supported on the shaft and an electromagnetic member fixedly connected to the shaft. The electromagnetic member of the coupling is energized by the control signal to engage with the armature. A first reduction gear is arranged between the electromotor and the armature. A locking arm is pivotably supported on the support and linked at its free end to the gas lever and, at its other end, to the second reduction gear.

Abstract: A fuel control system for an electronically controlled fuel injected internal combustion engine, whereby fuel is injected into the cylinders for a fixed number of degrees with respect to the crankshaft rotation. A trigger pulse is fed into a tachometer circuit (32) giving a DC ramp output with respect to speed. A portion of this ramp signal is fed into a monostable circuit (31) whose output pulse duration is now speed dependent and remains constant in degrees of engine crankshaft as the speed of the crankshaft increases. By adjusting the slope of DC ramp output fed into the monostable circuit (31), the fuel "on" time may be set to any fixed number of engine crankshaft degrees desired for a particular engine.

Abstract: A governor circuit for limiting the maximum speed of an internal combustion engine is effective to minimize overshoot at all ranges of engine acceleration. The system includes a circuit responsive to the engine speed which provides control signals to a solenoid valve which, in turn, controls a vacuum actuator which can override a manual throttle control to move the throttle toward closed position when a governed engine speed is approached. A control circuit provides a signal having a lead component and an integrated signal which comprises a stabilizing component and an integrated speed component. The integrated signal is provided by an integrator having a low sensitivity and high gain at low engine accelerations and a high sensitivity and low gain at engine accelerations above a predetermined switch point. The resulting control signal controls a duty cycle oscillator which actuates the solenoid valve.

Abstract: An idle speed control device of compact size has a miniature DC motor operably connected by a speed reducing gear train to drive a threaded shaft to adjust the position of a throttle stop for an engine throttle valve lever to thereby control engine idle speed wherein the throttle stop is initially moved by the throttle lever to close a normally open switch within the device to enable motor operation only during idle and wherein the threaded shaft disengages from the gear train when the throttle stop reaches a maximum throttle valve opening position while the motor continues to run and re-engages when the motor reverses.