Patent · US Active

Method for controlling an injector

US9518526B2 · kind B2 · utility

0Cited by

4References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andrej Elsinger · Ditzingen, DE
Ulrich Doebler · Waiblingen, DE
Cornelia Giessler · Beilstein, DE

Key dates

Filing date	Mar 7, 2014
Grant date	Dec 13, 2016
Priority date	—
Expiry date	Feb 14, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for controlling a valve which injects fuel into a combustion chamber of an engine and which has a valve member which closes a valve opening, and an electric actuator which drives the valve member to carry out strokes for releasing the valve opening and to which electrical control signals are applied for triggering valve member strokes of a defined stroke size, in order to compensate for an age-related stroke reduction of the valve member and deteriorated metering of the injected fuel related thereto, a stroke loss model into which temperature and temperature changes at the valve as well as the number of strokes carried out by the valve member are continuously incorporated is used to predict a reduction of the stroke size as a stroke loss and to correct the control signals using the predicted stroke loss.

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