Patent · US Expired

Method for monitoring at least two electromagnetic valves of an internal combustion engine, especially an internal combustion engine of a motor vehicle in particular

US7084637B2 · kind B2 · utility

1Cited by

9References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Hermann Gaessler · Leinfelden, DE
Ulf Pischke · Stuttgart, DE
Hubert Schweiggart · Stuttgart, DE
Rolf Jaros · Backnang, DE

Key dates

Filing date	Jun 18, 2003
Grant date	Aug 1, 2006
Priority date	—
Expiry date	Jun 18, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/006
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for monitoring at least two electromagnetic valves of an internal combustion engine in a motor vehicle. An actual current that is independent of the other valves may be supplied to each valve. A setpoint current is preselected for each valve. Measuring devices are provided for measuring the actual currents supplied to the valves. A control unit is used to add the measured actual currents to yield a total actual current. Due to the control unit, the setpoint currents are added to yield a total setpoint current and compared to the total actual current. This comparison is used by the control unit for monitoring the valves and/or their interconnections.

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