Robert Boschgmbh

Joachim Heimes

Helmut Denz

Eberhard Schnaibel

Ernst Wild

Werner Mezger

Lothar Raff

Klaus Walter

Karl Ott

Martin Haussmann

Eugen Joos

Klaus Boettcher

Joachim Strate

Johannes-Dieter Wichterich

In a device and a method for ignition of an internal combustion engine having at least one cylinder is described, the device includes a central control unit and peripheral units, each being allocated to one cylinder, digital control signals being sent from the central control unit to the peripheral units, triggering the peripheral units to ignition of the respective cylinder, measured values describing states in the peripheral units being determined by the peripheral units and sent to the central control unit as a function of the measured values, at least one time difference between the control signals and the diagnostic signals being determined by the central control unit for analysis of the diagnostic signals.

Device and method for ignition in an internal combustion engine

Device for detecting the position of at least one shaft which has a

The invention is directed to a connecting circuit for a potential-free lambda probe having a ground line and a signal line and having an offset voltage source which is connected to the ground line. This offset voltage source raises the potential of the ground line to a pregiven value relative to ground. A ground short is directly detectable in the connecting circuit of the invention in that the potential measured at the signal line drops below the offset voltage. In this way, it is no longer required as in conventional circuits to check for a ground short by enriching the mixture of an engine and to monitor the exhaust gas with the lambda probe.

Connecting circuit for connecting a lambda probe to a control apparatus

Growing community of inventors

Eberdingen, Germany

Joachim Heimes