Patent · US Active

Method for controlling an automotive hydraulic pump

US7962270B2 · kind B2 · utility

0Cited by

11References

11Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Florian Schneider · Obernzenn, DE
Thomas Jager · Meckenbeuren, DE
Marcus Gansohr · Salem, DE

Key dates

Filing date	Apr 9, 2005
Grant date	Jun 14, 2011
Priority date	—
Expiry date	Jul 19, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2061/0034
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method for controlling an automotive hydraulic pump, wherein the hydraulic pump is activated to increase the pressure in a hydraulic accumulator associated therewith once the pressure falls below a predetermined lower pressure threshold, and the hydraulic pump is switched off once the pressure exceeds a predetermined upper pressure threshold value (P_O). The solution is to reduce fuel consumption of the vehicle, wherein the hydraulic pump is activated during different operating phases of the vehicle at different lower pressure values (P_U1, P_U2) in the event of a hydraulic pressure drop in the hydraulic accumulator of the hydraulic pump.

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