Research On The ATS Of Motorcycle Engine Ignition Performance

Engine ignition performance is a key factor to the power, economy and emission of motorcycle engine. Currently, with the increasingly serious energy and environment problem, the ban and limit to the motorcycle in the large and middle cities has given an alarm to Chinese motorcycle industry. Improving the performance of power, economy and emission of motorcycle engine is the urgent affair to the development of motorcycle industry. The traditional test equipments of ignition performance can not satisfy the requirement of research, development and production of motorcycle engine.On the background of motorcycle industry, an ATS (Auto-Test System) of motorcycle engine ignition performance based on wavelet theory is presented after analyzing the principle of motorcycle ignition system, the character of ignition performance and the limitation of traditional test equipments. The digital signal processing theory and the automatic test technology is applied to the ATS of motorcycle engine ignition system. The design and implementation of the ATS are introduced, including the test principle of ignition performance, the overall design of ATS, the mechanical operation plat, the signal acquisition channel, the signal processing and the implementation of software. An application of threshold filter in the wavelet domain on the de-noising of ignition volt signal is discussed in detail. With Visual C++ and MATLAB mixed-language programming technique, the application is implemented successfully in the ATS softer ware.The experiments results show that the ATS of motorcycle engine ignition performance is stable and has highly real-time performance, high accuracy and anti-jamming. It satisfies the requirement of the engine ignition parameter test.