Patent · US Expired

Method for timed measurements of the voltage across a device in the charging circuit of a piezoelectric element

US6680620B2 · kind B2 · utility

6Cited by

12References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Hedenetz · Köngen, DE
Kai Barnickel · Stuttgart, DE
Josef Newald · Stuttgart, DE
Udo Schulz · Gießen, DE

Key dates

Filing date	Apr 2, 2001
Grant date	Jan 20, 2004
Priority date	—
Expiry date	Jun 29, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/2096
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for timed measurement of a voltage across a device in a charging circuit of a piezoelectric element. The voltage across the device is sensed and read at a predefined time in synchronization with an injection event of the at least one piezoelectric actuator. The device may be the piezoelectric element or a buffer capacitor.

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