Patent · US Active

Method for triggering a plurality of valves, and control block having a plurality of valves

US7878481B2 · kind B2 · utility

4Cited by

6References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ingo Kallfass · Gondelsheim, DE
Reiner Kurz · Sachsenheim, DE
Gerhard Keuper · Leonberg, DE
Gerold Mueller · Ulm, DE

Key dates

Filing date	Mar 9, 2009
Grant date	Feb 1, 2011
Priority date	—
Expiry date	Aug 15, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7761
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A plurality of valves are triggered so that a first valve is triggered by a first trigger signal and a second valve is triggered by a second trigger signal, the first trigger signal and the second trigger signal are each generated by generating a pulse width modulated frequency signal of the first frequency f1 and a dither signal of the second frequency f2, where f1>f2, the trigger signal is generated by modulating the clock pulse duty factor of the frequency signal with the dither signal, and the dither signals of the first trigger signal and of the second trigger signal are synchronized with one another at chronological intervals.

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