Ford Global Technolgoies, LLC

Raymond Henry Berger

Michael Igor Kluzner

Robert Joseph Jerger

Gary Lee Danhoff

Ghassan Hussini

Edward Ponagai

Ghassan K Raad

Douglas Raymond Martin

Michiel Jacques Van Nieuwstadt

Allen Joseph Lehmen

Eric R Beatham

Methods and systems are provided for diagnosing a gasoline particulate filter in an engine exhaust passage. A pressure-flow relationship of the filter is learned in a low engine speed and high engine speed range. Degradation of the filter is identified based on a substantial separation between the curve fits at the high and low speed range.

Method and system for leak detection at a particulate filter

A system and method for detecting an air leak within an engine is provided. The engine includes an intake manifold communicating with an engine cylinder. The method includes measuring an exhaust gas constituent in exhaust gases from the engine when the engine is operating in an idle operating mode. The method further includes determining whether the air leak is present in the engine based on a measured exhaust gas constituent, a first air-fuel correction value, and a second air-fuel correction value.

System and method for detecting an air leak in an engine

A system and method for detecting an air leak within an exhaust system is provided. The method includes measuring an exhaust gas constituent in exhaust gases from the engine when the engine is operating in an idle operating mode. The method further includes determining whether the air leak is present in the exhaust system based on a measured exhaust gas constituent, a first air-fuel correction value, and a second air-fuel correction value.

System and method for detecting an air leak in an exhaust system coupled to an engine

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Canton, MI, United States of America

Raymond Henry Berger