Patent · US Active

Error correction during the operation of electrohydraulic valve control systems

US8220424B2 · kind B2 · utility

0Cited by

1References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karsten Mischker · Leonberg, DE
Thomas Rommel · Langenfeld, DE
Hermann Gaessler · Leinfelden, DE
Milos Medvecky · Ditzingen, DE

Key dates

Filing date	Sep 2, 2008
Grant date	Jul 17, 2012
Priority date	—
Expiry date	Feb 7, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L9/10
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for operating an electrohydraulic valve control system of an internal combustion engine, the electrohydraulic valve control system comprising at least one gas exchange valve actuator and a gas exchange valve, which is hydraulically actuated by it, an actuation characteristic is acquired during the operation of the internal combustion engine while the gas exchange valve is being actuated and is compared with a reference actuation characteristic, which describes a nominal characteristic of the gas exchange valve actuator.

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