Lin Zhihua

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It is important to research misfire diagnostics for On-Board Diagnosis system. Misfire detection based on crankshaft speed fluctuation and engine roughness calculation is a common and useful method. This paper studies the current misfire diagnostic method and the optimizing strategy based on Chery 447F engine. Advanced gasoline engine misfire detection(More)
This paper designs the diagnosis strategy for OBD system oxygen sensor degradation and the relevant test on engine bench is made by oxygen signal generator. The engine emission influence due to oxygen sensor degradation is analysed. Based on the structure and sensing principle of zirconia type oxygen sensor, the mechanism of oxygen sensor deterioration is(More)
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