Anais Do XXII Simpósio Internacional De Engenharia Automotiva 2014 DOI: 10.5151/engpro-simea2014-72 View full text
Rafael Amend da Cruz, Frederico Tischer

Abstract: The paper describes and presents practical results of a method for detection of internal fuel leakage in an engine. The method is based in unexpected oxygen concentration changes measured in the exhaust gases together with the Engine Roughness (disturbance on the Low Idle controller). The concept is useful to detect small leakages or a fuel injector blocked in the open position. This strategy can be used when the fuel injectors are blocked in the open position and the engine is in one of these two states: no e…

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