Patent · US Expired

Control system for the electric fuel pump of an internal combustion engine

US5345915A · kind A · utility

8Cited by

11References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Axel Schmitz-Huebsch · Waiblingen, DE
Ulrich Koelle · Schwieberdingen, DE
Dietmar Flaetgen · Lambach, DE

Key dates

Filing date	Apr 22, 1993
Grant date	Sep 13, 1994
Priority date	—
Expiry date	Apr 22, 2013

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2037/085
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control system is described for the electric fuel pump of an internal combustion engine, with a sensor for the speed of a shaft of the engine and with a logic circuit for providing a shut off signal for the pump, depending on the speed detected, where the signal of a further sensor (14) for the speed is supplied to the a logic circuit (16, 17), and where shut off then takes place only when both speed signals deviate from a specified range. In this way, it is ensured that the vehicle remains drivable if one of the two sensors (13) or (14) fails.

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