Patent · US Expired

Method for diagnosing an engine control unit and corresponding engine control unit

US7278303B2 · kind B2 · utility

5Cited by

4References

26Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Jan Piewek · Wolfsburg, DE
Jens Jeschke · Braunschweig, DE
Andreas Wagner · Eppelheim, DE
Thomas Lang · Schwäbisch Hall, DE

Key dates

Filing date	Oct 5, 2005
Grant date	Oct 9, 2007
Priority date	—
Expiry date	Feb 17, 2026

Classification

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

Abstract

A method for diagnosing an engine control unit (4) conducts an analysis as to whether the signal values from the cylinder pressure sensors (3) are faulty based on at least one characteristic value which is derived from an evaluation of signal values from the cylinder pressure sensors (3) of the cylinders (2) in a combustion engine (5). In addition to this is described the engine control unit (4) designed to execute the method. Also hereby disclosed is a method which, based on symmetrical aspects, determines a crankshaft angle (phipCylMaxTDC) for a cylinder pressure maximum during push mode operation of the combustion engine (5).

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