Patent · US Active

Method and device for controlling a vacuum apparatus

US8678773B2 · kind B2 · utility

1Cited by

1References

8Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Reiner Schmid · Reutlingen, DE
Martin Tarnowski · Solingen, DE
Ian Moore · Pulheim, DE
Russell William Ferguson · Ypsilanti, US

Key dates

Filing date	Aug 23, 2011
Grant date	Mar 25, 2014
Priority date	—
Expiry date	May 10, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B2207/02
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Method and device for controlling a vacuum apparatus. A method for controlling a vacuum apparatus that applies vacuum to a vacuum accumulator with a pump of a pneumatically operated servo unit of a motor vehicle. The method comprises the steps of determining the pressure in the vacuum accumulator; determining the ambient pressure; adapting a pump control signal to the ambient pressure; comparing the pressure in the vacuum accumulator with an adapted pump control signal; and outputting a pump actuation signal that is a function of the comparison.

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