Patent · US Expired

Starting device for an internal combustion engine, especially of a motor vehicle, with a redundancy circuit

US6148781A · kind A · utility

24Cited by

5References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karlheinz Boegner · Köngen, DE
Stefan Renner · Leonberg, DE
Martin Mayer · Sersheim, DE
Claus Kramer · Besigheim, DE
Rainer Topp · Reutlingen, DE
Volker Koelsch · Stuttgart, DE
Henning Stoecklein · Eberdingen, DE
Jochen Neumeister · Stuttgart, DE
Frank Kurfiss · Rochlitz, DE

Key dates

Filing date	Jul 24, 1997
Grant date	Nov 21, 2000
Priority date	—
Expiry date	Jul 24, 2017

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02N2200/06
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The starting device for starting an internal combustion engine includes a starter motor (12) with a pinion for cranking the internal combustion engine; a voltage source (40) for the starter motor; a starter relay (14) for connecting and disconnecting the voltage source to and from the starter motor and an electronic relay (32) for triggering the starter relay according to control signals from the motor controller (50). The electronic relay (32) is mounted on the starter motor or in the starter relay. The electronic relay (32) includes a power module (34) with a redundancy circuit including two transistors (144', 144") coupled with each other by a logic circuit for preventing starter operation when one of the two transistors is defective.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.