Patent · US Active

Method for identifying a defective control device

US8239088B2 · kind B2 · utility

1Cited by

5References

11Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Jürgen Dingl · Regensburg, DE
Markus Roth · Schenkenzell, DE
Jochen Schönhaar · Regensburg, DE

Key dates

Filing date	Feb 1, 2007
Grant date	Aug 7, 2012
Priority date	—
Expiry date	Oct 17, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for identifying a defective control device in an internal combustion engine, especially a control element of an intake manifold with a variable length, a swirl flap, or a tumble flap, or generally a control element in the air path of the internal combustion engine, instead of using a return message acknowledging the position of the control device, a regulating signal is detected following the successful switching of the control device, in order to use any deviations of said regulating signal above a defined threshold value to identify a defective control device.

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