Patent · US Expired

Alternator for a motor vehicle having a ventilator and device for monitoring and a controlling the ventilator

US5160881A · kind A · utility

172Cited by

3References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Guenter Schramm · Lambach, DE
Walter Kohl · Bietigheim, DE
Friedhelm Meyer · Mühlacker, DE

Key dates

Filing date	Apr 1, 1991
Grant date	Nov 3, 1992
Priority date	—
Expiry date	Apr 1, 2011

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/06
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Fresh air from an area located outside of the engine compartment is supplied to an alternator in a motor vehicle by ventilator. The ventilator is supplied with voltage from the alternator power supply system, and since a failure of the ventilator could lead to destruction of the alternator due to heat, the functioning of the ventilator is monitored by a device or circuit for monitoring and/or controlling the ventilator. This circuit also has a device for self-checking and controls the additional ventilator as a function of the alternator temperature by a device for measuring alternator temperature electrically connected to it.

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