Patent · US Expired

Method for increasing brake efficiency

US6910989B2 · kind B2 · utility

0Cited by

5References

7Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Bernhard Reisch · Isny im Allgäu, DE
Peter Schmidtner · Gettorf, DE

Key dates

Filing date	Nov 14, 2001
Grant date	Jun 28, 2005
Priority date	—
Expiry date	Nov 14, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/0213
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

Within the framework of the method for increasing brake efficiency of a vehicle with a hydrodynamic retarder, the rotational speed of the motor is increased by command for downshifting, in such a manner, that the increased cooling fluid circulation flow, due to the higher rotational speed of the motor speed, the necessary retarder braking power is made available, whereby a downshift command is issued, if this is necessary due to the actual retarder braking power.

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