Robert Boschgmbh

Ulrich Koelle

Helmut Randoll

Dietmar Flaetgen

Martin Streib

Robert Hugel

Andreas Weigl

Andreas Lock

Bernd Herrmann

Andreas Roth

Thorsten Mausbach

Armin Lussman

Axel Schmitz-Huebsch

Georgios Daniilidis

Hans-Joerg Schulz

Volker Schaeferjohann

A device for controlling an internal combustion engine has sensors That measure the operating states of the internal combustion engine. The sensor signals are used for determining control signals for the internal combustion engine. Furthermore, testing means are provided which verify the sensor signals and if implausible sensor signals are detected, control of the internal combustion engine is prevented.

Device for controlling an internal combustion engine

A device for limiting the supercharger speed which makes do without a speed sensor or an atmospheric pressure sensor has a bandpass filter which filters out a spectral component from the output signal of a boost pressure sensor arranged in the induction pipe of the engine, the spectral component appearing in the signal spectrum of the boost pressure sensor when the air column in the induction pipe is set into a vibration which develops when the compressor of the turbocharger rotates at the maximum permissible speed.

Device for limiting the speed of an exhaust-gas turbocharger

The invention relates to a structural theft protection system for motor vehicles with a blocking control device ( ) for releasing a motor control device ( ), a code acquisition device ( ) that is connected to the blocking control device, and a device ( ) connected to the blocking control device ( ) for acquiring a vehicle use parameter (T, S), as well as with several locally fixed code takeover/output stations ( ), wherein the blocking control device ( ) keeps the motor control device ( ) in the release position only if the blocking control device ( ) is fed a new release information by one of the locally fixed code takeover/output stations ( ), preferably at regular intervals.

Structural theft protection for motor vehicles

A controller has a microcomputer, an electrically erasable and programmable memory which has a control program (CONTROL), a read only memory and a serial interface. A serial data transmission line can be connected to the serial interface. A program (PROG) for reprogramming the electrically erasable and programmable memory is stored in the read only memory. For reprogramming the electrically erasable and programmable memory, the controller receives the data, which are to be programmed, via the serial data transmission line from an external communications apparatus.

Reprogrammable controller containing multiple programs

A control device has a microcomputer, a memory which has a control program and can be cleared and programmed electrically, a read-only memory and a serial interface. In the read-only memory, a program for reprogramming the memory which can be cleared and programmed electrically is stored. For the reprogramming of the memory which can be cleared and programmed electrically, the control device receives the data to be programmed from an external communication device via the serial interface. The control device causes the program for reprogramming the memory which can be cleared and programmed electrically to be processed without the control program having to be started or operative for this purpose.

Control device including an electrically programmable memory

Device for crankshaft-synchronous detection of a periodically changing

The ignition system for a four-cycle gasoline engine having at least one cylinder includes a spark plug for each cylinder and an ignition coil for each spark plug so that each spark plug has its own ignition coil with a primary and secondary side as well as a control device for controlling the timing of the firing of the spark plugs via the individual ignition coils according to a predetermined firing sequence connected to each of the ignition coils. To satisfy strict requirements regarding exhaust emission by monitoring operation of the individual cylinders while avoiding additional sensors, the control device includes a circuit for analyzing and storing the ignition voltages on the primary side of each ignition coil measured at a number of different times for successive ignition events in each cylinder and a comparator device which compares the dependencies of the ignition voltage on time for two successive ignition events and a phase signal generating device which produces a phase signal from the results of the comparison of the ignition voltages mmade by the comparator device for control of the fuel injection and spark timing for each cylinder.

Ignition system for internal combustion engines

Control system for the electric fuel pump of an internal combustion

A control system for an internal combustion engine which includes a crankshaft sensor for sensing a crankshaft transmitter disk and a camshaft sensor for sensing a camshaft transmitter disk. Both sensors supply signals to a control device which calculates ignition and injection signals based upon operating parameters, such as engine load and rotational speed, with the rotational speed being based on the signals for the crankshaft sensor or camshaft sensor. In case of crankshaft sensor failure, an emergency function in the control device simulates the crankshaft signals based on the signals from the camshaft sensor. Preferably, the number of segments on the camshaft transmitter disk are equal to the number of cylinders of the engine.

Growing community of inventors

Schwieberdingen, Germany

Ulrich Koelle