Patent · US Active

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

US8550056B2 · kind B2 · utility

0Cited by

9References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

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

Key dates

Filing date	Oct 20, 2005
Grant date	Oct 8, 2013
Priority date	—
Expiry date	Apr 21, 2028

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, in particular of a fuel injection system of a motor vehicle. Two transistors connected in series and triggerable using a clock pulse are provided, whose shared connecting point is coupled to the piezoelectric element and one of which is provided for discharging the piezoelectric element. In the event of an error, the transistor provided for discharging can be triggered using the clock pulse.

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