Method to verify cold start spark retard
作者： John Michael Kacewicz , Arthur Joseph Varady , Lynn Edward Davison , Cheryl Jeanette Stark
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摘要: Methods of utilizing engine 15 crankshaft acceleration 17 to monitor cold start spark retard are presented. A first method utilizes a variance in based deviation signal 21 and looks for changes the confirm if has occurred by ignition system. In second method, threshold level group cylinder signals Δ, can be detected compared deviant when normal is commanded determine been realized.
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