Patent · US Expired

Electric circuit for triggering a piezoelectric element, in particular of a fuel injection system of a motor vehicle

US7705604B2 · kind B2 · utility

1Cited by

2References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Marco Graf · Tamm, DE
Joerg Reineke · Stuttgart, DE
Mirko Schinzel · Stuttgart, DE

Key dates

Filing date	Oct 20, 2005
Grant date	Apr 27, 2010
Priority date	—
Expiry date	Apr 18, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2041/2093
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electric circuit for triggering a piezoelectric element, a fuel injection system of a motor vehicle in particular, is described. A first measuring shunt connected in series to the piezoelectric element is provided. Provided are two transistors connected in series whose shared connecting point is connected to the piezoelectric element. A second measuring shunt is also provided. The two transistors and the second measuring shunt are connected in series.

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