Robert Boschgmbh

Michael Kirschner

Wolf Wessel

Stefan Poledna

Werner Jundt

Manfred Mezger

Joachim Berger

Martin Zechnall

Dieter Seher

Martin Grosser

Bernd Przybyla

Gunther Kaiser

Rudiger Jautelat

Walter B Hersel

Ulrich Gerstung

Torsten Henke

Dieter Mayer

Karl-Heinz Schmidt

Klaus-Gerd Meyer

Dieter Hall

Felix Forster

Siegfried Hertzler

Alfred Bruckelt

Werner Zimmerman

Wolfgang Bittinger

Wolfgang Dittrich

Gunter Rapp

Michael Henn

system for controlling fuel, metering into an internal combustion engine

Method and device for driving an electromagnetic consumer

A system for controlling a motor vehicle includes a first device for determining control data required for controlling the motor vehicle. A second device monitors the first device. The first device determines second data on the basis of first data, pursuant to a test function. The second device determines third data on the basis of the first data, pursuant to the same test function. The first and/or the second device recognizes an error state relevant to safety, dependent upon a comparison between the second data and the third data.

System for controlling a motor vehicle

Pulse shaper for inductive pickups having a voltage controlled

To increase the versatility of a central processing unit (30) controlling an operating apparatus, such as apparatus including an engine, installed in an automotive vehicle, a main read-only memory (ROM, 40) stores not only operating data of the vehicle and/or the engine, but additionally, the organization program of the central processing unit (CPU, 30) in modular, or block form in the ROM (40). An auxiliary ROM (41) preferably an electronically erasable ROM is connectable, via an interconnection bus (80) to the CPU (30) and an initial program stored in the main ROM (40) provides a determination or recognition step to be carried out by the CPU (30) first, to determine if the auxiliary EPROM (41) is present; and, if so, to then address the auxiliary EPROM (41) for control of the program run of the CPU; if not, to take programming operating data directly from the ROM (40). The programming stored in the auxiliary EPROM (41) may direct the CPU (30) to carry out programming steps stored in the main ROM (40) in the stored sequence, or in changed sequences, as well as to take operating steps directly from the auxiliary EPROM (41). All programming data are stored in the auxiliary EPROM (41) also in modular or block form, and preferably include diagnostic programs relating to monitoring a function of the vehicle or of the engine, under control of data computed by the CPU (30).

Control system to control operation of an apparatus, more particularly

To prevent change of data in a non-volatile programmable, ready-only memory (25) forming, together with a microprocessor (23) a control unit, for example for an automotive vehicle, while permitting programming of the memory from an external programming unit (P, 1), an interface (3, 11, 12) is provided through which a release-enable bus (13) also passes, data being transmitted in accordance with a predetermined characteristic--even or odd parity--, the parity correctness being checked. If the parity is correct, an 'enter' signal is provided on the release-enable bus for storing the data; if not, retransmission is attempted for a predetermined number of time, and if it cannot be correctly effected, a malfunction indication output signal is generated.

Externally reprogrammable vehicular microcomputer with hardware lock-out

Pulse shaper for inductive transmitters

Growing community of inventors

Ludwigsburg, Germany

Michael Kirschner