Patent · US Active

Method for determining the idle travel of a piezo-injector with a directly actuated nozzle needle

US9534983B2 · kind B2 · utility

0Cited by

7References

11Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Michael D. Katzenberger · Florissant, US
Manfred Kramel · Mintraching, DE
Nicolas Nozeran · Regensburg, DE

Key dates

Filing date	Feb 29, 2012
Grant date	Jan 3, 2017
Priority date	—
Expiry date	Dec 20, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M51/0603
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method is disclosed for determining the idle travel of a piezo-injector which has a piezo-actuator and a nozzle needle which is activated directly by the piezo-actuator. A test pulse is applied to the piezo-actuator, which pulse brings about a continuous increase in the piezo-travel. The time period is measured which passes between the starting of the test pulse and the time when the idle travel is overcome. The idle travel of the piezo-injector is then determined from the measured time period.

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