Robert Boschgmbh

Michael B&auml;uerle

Carsten Kluth

Oskar Torno

Steffen Franke

Iwan Surjadi

Werner H&auml;ming

In the apparatus for controlling a coasting air recirculation valve of the turbocharger of an internal combustion engine, the coasting air recirculation valve is arranged in the coasting air recirculation line bypassing a compressor in the intake duct, and the coasting air recirculation valve is controllable by way of the intake duct pressure on the downstream side of the throttle valve. In order to ensure defined opening and closing of the coasting air recirculation valve, an additional control pressure, with which the coasting air recirculation valve can be opened independently of the intake duct pressure, can be delivered to the coasting air recirculation valve.

Ambient air-pulsed valve control

To achieve a very sturdy automatic control of the boost pressure, the integration of system deviation of the boost pressure, which is carried out by an integrator, is limited to a predefinable limiting value. Limiting value is composed of a basic value and a correction value superimposed upon it. Correction value is determined adaptively as a function of speed, a plurality of speed ranges being predefined. Adapted correction value can be increased or reduced stepwise, which mainly depends on whether the integral-action component of the manipulated variable for the boost pressure is smaller or greater than the current limiting value.

Load control in an internal combustion engine

The invention proceeds from a system for generating a signal which represents a deceleration operation of a motor vehicle having a motor. The signal is especially for driving the brake lamps of the motor vehicle. Furthermore, a control apparatus is present which controls (open loop or closed loop) the motor in dependence upon the data, which are present in the control apparatus. The essence of the invention is that the data, which are present in the control apparatus and which are applied for generating the signal, represent at least the drag torque, which is effected by the motor (the motor drag torque). With the system of the invention, a relatively precise index for a vehicle deceleration is obtained from the data present anyway in the motor control apparatus at least in newer or future motor control apparatus. If a drive of the brake lamps takes place in dependence upon the signal generated in accordance with the invention, then the traffic following is also made aware of the decelerations which are not directly attributable to an actuation of a brake.

Growing community of inventors

Markgröningen, Germany

Michael Bäuerle

Growing community of inventors

Markgröningen, Germany

Michael B&auml;uerle

Michael Bäuerle