A new method is proposed for engine misfire detection.By analyzing the link of engine exhaust pressure fluctuation and its working conditions
the experimental system of misfire detection is designed.Misfire fault is simulated and can be realized by monitoring the dynamic change of engine exhaust pressure wave.The experimental results indicate that the method which based on exhaust pressure wave is accurate
reliable
visual and convenient.It provides a new way to monitor and diagnose the automotive engine fault without disassembly.