Patent · US Active

Diesel common-rail piezo-operated servo injector

US10746120B2 · kind B2 · utility

1Cited by

8References

7Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Vincent Dian · Ingolstadt, DE
Matthias Scheid · Regensburg, DE

Key dates

Filing date	Mar 9, 2017
Grant date	Aug 18, 2020
Priority date	—
Expiry date	Mar 14, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/21
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Various embodiments may include a method for operating a diesel-common-rail piezo-operated servo injector comprising: partially charging the piezo-actuator from a non-charged state at 0 V (method a); partially discharging the piezo-actuator from an already charged state to a remaining limited charge (method b); measuring the piezo-voltage with both methods and comparing the results; when the comparison demonstrates correspondence within a predefined threshold, using method b in ranges in which method a cannot be carried out; and when the comparison does not demonstrate correspondence within the predefined threshold, using method a without using method b.

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