Patent · US Active

Method and device for controlling an injection valve of an internal combustion engine

US7913666B2 · kind B2 · utility

5Cited by

10References

17Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Erwin Achleitner · Obertraubling, DE
Thomas Maurer · Munich, DE
Carlos Eduardo Migueis · Tegernheim, DE

Key dates

Filing date	Mar 2, 2007
Grant date	Mar 29, 2011
Priority date	—
Expiry date	Oct 15, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/31
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In order to reduce the quantity deviation of a fuel injection valve, it is proposed according to the various embodiments that a test injection be carried out during an overrun cut-off phase of a motor vehicle in operation. In the process, the fuel rail (2) is closed on the inlet side and the selected injection valve (1) is activated. A quantity difference between the predetermined setpoint and the actual value can be determined by measuring a pressure difference in the fuel rail (2) before and after the test injection. This results in a correction factor with which the activation for the selected injection valve (1) is corrected for subsequent injections.

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