Daimler Chrysler Ag

Daimler Ag

Mercedes-Benz Aktiengesellschaft

Hans-Christoph Wolf

Juergen Schenk

Roland Kemmler

Horst Brinkmeyer

Lothar Rehm

Jurgen Schenk

Hermann Bosch

Anton Heni

Markus Krauss

Ing Dietrich Sahm

Irmgard Heni, Legal Representative

Jurgen Schnek

Lothar Welter

Udo Weist

The invention relates to an apparatus and a method for starting an internal combustion engine for a motor vehicle, wherein the internal combustion engine has an associated electrical machine () which is operated as a starter/generator. During starting, the electrical machine () is supplied with a voltage which is obtained from addition or from subtraction of the voltages which are produced on a first energy store () and the voltages which are produced on a second energy store ().

Drive system for a motor vehicle comprising an internal combustion engine and an electric motor

In a control unit for operating a vehicle drive, and to a method for operating the control unit. An upper bound is imposed on the final desired torque output by the control unit with a limiting torque dependent on the measured/manipulated variables of the accelerator pedal value sensor, when the detected vehicle speed lies below a starting limiting speed.

Control unit for operating a vehicle drive

A safety system for a motor vehicle having an internal-combustion engine. Independent quantities are used for the engine control and for the monitoring of the engine control. Control of the internal-combustion engine is performed, for example, by way of an operating parameter characterizing the engine load. Preferably, monitoring of the engine control is integrated into a traction control system, in which case the desired value for a quantity characterizing the vehicle propulsion, such as the output torque, is transmitted by the engine control to the monitoring system, while the actual output torque is determined in the traction control system from the rotational wheel speed. If a fault is recognized in the traction control system during the continuous comparison of desired values and actual values, a signal is transmitted back to the engine control unit, to influence the engine control.

Safety system for a motor vehicle

The invention relates to a safety system for a motor vehicle having an internal-combustion engine. Independent quantities are used for engine control and for monitoring the engine control. Control of the internal-combustion engine is performed, for example, by way of an operating parameter characterizing the engine load, while monitoring of the engine control is performed by means of the output torque. Preferably, monitoring of the engine control is integrated into a traction control system, in which case desired and actual values for a quantity characterizing the vehicle propulsion, such as the output torque, are transmitted by the engine control to the monitoring system and are compared there for recognizing a fault. If a fault is recognized in the traction control system, a signal is transmitted back to the engine control unit, to influence the engine control.

In an air supply arrangement for an internal combustion engine, particularly for motor vehicles having devices for cooling the engine and for supplying exhaust gas secondary air to the exhaust system of the engine, a single air pump driven by an electric motor is provided for supplying air to the engine cooling system and to the exhaust system and devices for switching the air flow supplied by the air pump to either the engine cooling system or the engine exhaust system are provided. A control unit is also provided which controls the electric motor depending on the amount and pressure of the air needed for the cooling system and the engine exhaust system.

Air supply arrangement for an internal combustion engine

The invention relates to a safety system for a motor vehicle having an internal-combustion engine. Independent quantities are used for the engine control and for the monitoring of the engine control. The control of the internal-combustion engine takes place by way of an operating parameter indicative of the operating condition of the internal-combustion engine--such as the engine load. In contrast, the monitoring of the engine control takes place by means of a quantity indicative of vehicle propulsion, such as the vehicle output torque, which is determined on the basis of a rotational wheel speed. The desired values for the engine control and for the monitoring are determined from the accelerator pedal position. The detection of the corresponding actual values is based on independent input quantities.

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Stuttgart, Germany

Hans-Christoph Wolf