Patent · US Active

Sensor with a piezo-actuator

US10612485B2 · kind B2 · utility

1Cited by

3References

6Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Janos Radeczky · Wenzenbach, DE
Matthias Scheid · Regensburg, DE

Key dates

Filing date	Mar 9, 2017
Grant date	Apr 7, 2020
Priority date	—
Expiry date	Mar 9, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Various embodiments may include a method for operating a piezo-actuator in a piezo-operated injector for a fuel injection system comprising: producing a measuring pulse at a position at which the usable signal which is to be measured is expected; then producing a reference pulse which corresponds to the measuring pulse, in the same cycle; subtracting a first actuator voltage measured during the reference pulse from a second actuator voltage measured during the measuring pulse; using a resulting voltage signal difference to calculate a force sensed by the piezo-actuator; and using the force sensed to correct an injection amount for the injector.

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