Volkswagenwerk Aktiengesellschaft

Ernst Fiala

Wilfried Schwanz

Andreas Bauer

Ulrich Seiffert

Rolf Warnecke

Peter Buchholz

Burckhard Struwe

Klaus Oehm

Reiner Schoedder

Ruediger Weissner

Fritz Schael

The operation of a motor vehicle is controlled by reading of a programmed memory to accelerate the vehicle along a predetermined optimum efficiency curve. The acceleration is independent of the position of the accelerator pedal, provided the pedal is neither in the idling position nor in the full throttle position. For these positions, the acceleration of the vehicle is not under the control of the programmed device.

Method and arrangement for operation of an internal combustion engine of

A vehicle is equipped with an engine, a transmission and a control device for cutting off the engine. This control device is actuated as a function of the position of the gearshift lever.

Engine with automatic cut-off device

A utility vehicle body is fabricated with a closed cab portion and an open cargo portion. The cab portion is arranged to be resistant to bending moments in the longitudinal direction of the vehicle and resistant to torsion forces. For this purpose, there is provided a torsion resistant frame extending around the entire circumference of the rear wall of the cab portion. The cargo portion has an approximately U-shaped transverse cross-section and is therefore resistant to bending in the longitudinal direction, but by itself is not resistant to torsion forces. The cargo portion is rendered resistant to torsion forces by reason of its attachment on the rear wall of the cab portion.

Utility vehicle body

A system is provided for fuel-efficiently operating an engine in a vehicle wherein the vehicle engine is coupled through a clutch to an infinitely variable ratio gear driving a planetary gear train. A clutch pedal actuates the clutch, and an accelerator pedal is coupled to the fuel delivery mechanism of the engine. A first storage unit is responsive to the position of the accelerator pedal and selects a stored value for the ratio of the infinitely variable ratio gear. A drive unit is provided for adjusting the ratio of the infinitely variable gear in response to the selected value from the first storage. A second storage unit is responsive to the position of the accelerator pedal and selects a stored value for a fuel delivery mechanism. A third storage unit is responsive to the position of the clutch pedal and selects a stored value for the fuel delivery mechanism. A comparison unit is coupled to the second and third storage units for selecting the smaller of the values for the fuel delivery mechanism. A drive unit is provided for adjusting the fuel delivery mechanism in response to the value selected by the comparison unit.

System for operating the drive of a vehicle

A drive train for an automobile engine and automatic transmission includes a clutch positioned between the engine and the flywheel and a starting motor on the transmission side of the clutch.

Drive for automobile automatic transmission

An improved drive unit for a vehicle having an internal combustion engine, an automatic transmission and a clutch comprising a servo-powered mechanical coupling part and a fluid coupling part is disclosed. The fluid coupling part serves as the flywheel for the engine. An auxiliary starting motor rotates the flywheel to a speed sufficient to start the internal combustion engine when the accelerator pedal is depressed, thereby closing the mechanical coupling part and connecting the flywheel with the engine crankshaft. When the accelerator pedal is released the mechanical coupling part opens to stop the engine in all engine-braking phases, thereby maximizing fuel conservation.

Drive unit

A drive for a vehicle with an internal combustion engine and an electric motor drivingly connected to a manual transmission with a clutch is provided. The transmission has a shift lever, a shift gate, a lane associated with the lowest gear of the transmission, and an input shaft. A control lever is longitudinally displaceable when the shift lever is in a neutral position, and is supported by the shift lever when the shift lever is in the neutral position. The shift gate supports the control lever when the shift lever is positioned out of the neutral position. A first switch is positioned in the transmission and is actuated by the control lever. A spring normally biases the control lever into contact with the first switch. A first motor circuit includes an accelerator pedal coupled to a regulator to control the speed of the electric motor. A second motor circuit includes the accelerator pedal coupled to a power regulator to control the speed of the internal combustion engine. First and second clutch circuits disengage the clutch, with the second clutch circuit having a switch to disengage the clutch when the driver touches the shift lever. The first switch selects the first clutch circuit in the first motor circuit when the control lever is longitudinally displaced, and selects the second motor circuit and the second clutch circuit when the control lever is not longitudinally displaced.

Drive for a vehicle with an internal combustion engine and an electric

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.

Method and device for operation of an internal combustion engine in

Arrangement for fuel supply to the combustion chambers of a vehicle internal combustion engine with an engine-braking disconnection. A sensor determines the rotational speed of the engine. Function generators determine the limit value signals which are a function of the rotational speed of the engine. Comparators compare the signals determined by the function generators with a load signal received from a potentiometer acting as a position sensor indicating the position of the intake manifold throttle valve. The comparators are connected to switches which regulate or eliminate the fuel supply to the combustion chamber depending upon the output of the said comparators by supplying fuel to all combustion chambers, to groups of combustion chambers, or to no combustion chambers, so that the operation of the engine is fuel-consumption optimal.

Arrangement for fuel supply to the combustion chambers of a vehicle

For reducing knocking in an externally ignited, mixture-compressing internal combustion engine, the moment of ignition is delayed up to a predetermined maximum as a function of signals emitted by a knocking sensor. Thereafter, if engine knocking continues, the throttle valve is moved in the closing sense.

Anti-knocking apparatus for an internal combustion engine

A control apparatus for controlling the fuel metering device of an internal combustion engine uses a computer and servomotor to override the accelerator when the engine reaches a predetermined threshold speed for a selected throttle valve position. Preset values stored in the computer assure favorable fuel consumption during acceleration above the threshold speed.

Apparatus for providing uniform acceleration for an internal combustion

An indicating instrument for displaying the operating efficiency of a motor vehicle having an automatic transmission, which includes a pointer movable across an instrument face, and which is operable only when the engine speed is above idle and the transmission is in drive gear.

Efficiency meter for a vehicle engine

A fuel injection apparatus provides a rich fuel-air mixture which is injected into the intake manifold of an internal combustion engine in the vicinity of the intake ports of the cylinders. The quantity of fuel provided to the engine is regulated in accordance with the negative pressure in the engine air intake passage.

Fuel injection apparatus

A system for indicating the fuel consumption rate of a vehicle, wherein there is provided a pressure responsive instrument for indicating consumption rate which is connected by a pressure conduit to the intake passage of the engine, is provided with a pressure transformer in the conduit. The transformer is responsive to the operating condition of the vehicle transmission, and operates when the transmission is in its next highest gear to convert the negative pressure of the engine intake passage to a lower value of negative pressure which is presented to the indicating instrument. The conversion is by a pressure ratio equal to the ratio of the highest transmission gear to the next highest gear.

Growing community of inventors

Wolfsburg, Germany

Ernst Fiala