Patent · US Active

Electric actuation of a valve based on knowledge of the closing time of the valve

US8887560B2 · kind B2 · utility

8Cited by

11References

12Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Johannes Beer · Regensburg, DE
Erwin Achleitner · Obertraubling, DE

Key dates

Filing date	Apr 13, 2011
Grant date	Nov 18, 2014
Priority date	—
Expiry date	Jul 14, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2041/2055
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method is provided for determining a time duration for an electric actuation of a valve which has a coil drive, in particular of a direct-injection valve for an internal combustion engine. The method may include a deactivation of a current flow through a coil of the coil drive, such that the coil is in a currentless state, a detection of a time profile of a voltage induced in the currentless coil, a determination of the closing time of the valve on the basis of the detected time profile, and a determination of a time duration of the electric actuation of the valve for a future injection process on the basis of the determined closing time. A corresponding device and a computer program for carrying out the described method are also disclosed.

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