MANIFOLD AIR FLOW (MAF) AND MANIFOLD ABSOLUTE PRESSURE (MAP) RESIDUAL ELECTRONIC THROTTLE CONTROL (ETC) SECURITY

Title:

MANIFOLD AIR FLOW (MAF) AND MANIFOLD ABSOLUTE PRESSURE (MAP) RESIDUAL ELECTRONIC THROTTLE CONTROL (ETC) SECURITY

Document Type and Number:

WIPO Patent Application WO/2005/108948

Kind Code:

A2

Abstract:

An engine fault diagnostic system includes a diagnostic module that generates a manifold absolute pressure (MAP) error signal and that generates a mass air flow (MAF) error signal. A security module generates an airflow fault when the MAP error signal exceeds a MAP threshold and the MAF error signal exceeds a MAF threshold.

Inventors:

STEMPNIK JOSEPH
COLIN ROBERTS
KERFEGAR KATRAK
BAUERLE PAUL
ROGERS BRUCE

Application Number:

PCT/US2005/014077

Publication Date:

November 17, 2005

Filing Date:

April 22, 2005

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Assignee:

GEN MOTORS CORP (US)

International Classes:

F02D11/10; G01F25/00; G01L3/26; G01M15/00; (IPC1-7): G01M15/00; G01L3/26

Foreign References:

US20050060084A1

2005-03-17

Attorney, Agent or Firm:

Devries, Christopher (Legal Staff-Mail Code 482-C23-B21 P.O. Box 30, Detroit MI, US)

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