Patent · US Expired

Electronic control equipment for motor vehicles, particularly, electronic brake control equipment

US5587865A · kind A · utility

21Cited by

4References

12Claims

0Family size

Assignee

KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

Peter M. Bielig · Hersbruck, DE
Klaus Brahler · Hersbruck, DE
Gunther Gschomann · Markt Indersdorf, DE

Key dates

Filing date	May 1, 1995
Grant date	Dec 24, 1996
Priority date	—
Expiry date	May 1, 2015

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T2270/406
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Electronic control apparatus for motor vehicles. The apparatus includes a test circuit which causes a test current to flow through a load being operated by the apparatus and which detects the magnitude of the test current. From the magnitude of the test current, an evaluation circuit determines whether the ground potential of the control apparatus and the ground potential of the load are at different levels. In response to a potential difference between the two ground potentials, the evaluation circuit initiates countermeasures for preventing damage to the electronic control apparatus, such as selectively disconnecting the load with a power switch responsive to the evaluation circuit.

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