LI Yu-hua1, ZHANG Li1, KANG Jian1, et al. Diagnose combustion state of IC engine by crankshaft speed fluctuation signal[J]. 2010, 29(10): 52-54+58. DOI: 10.13873/j.1000-97872010.10.007.
Feasibility of using instantaneous speed fluctuation to diagnose IC engine combustion state is proved by building instantaneous speed-cylinder pressure model.Moreover
four kinds of characteristic parameters of combustion states are defined and a method of integrated characteristic parameter of multiple combustion state.The result of experimental data analysis shows that the four kinds of characteristic parameters can separately diagnose IC combustion states;furthermore
integrated characteristic parameter has higher accuracy rate than individual characteristic parameter to diagnose IC combustion state.