Title :
Misfire detection based on engine speed using wavelet
Author :
Yu, Xiumin ; Liu, Le ; Yang, Shichun ; Zhong, Xianglin ; Liu, Derong
Author_Institution :
State Key Lab. of Automotive Dynamic Simulation, Jilin Univ., Changchun, China
Abstract :
Misfire detection is an important part of on-board diagnostics (OBD) system which is widely used at present. There are several methods to detect misfire, and the method of misfire detection based on engine speed is the most popular one, even though it cannot detect misfire very well when engine speed is high. An improvement to the method of misfire detection based on engine speed using wavelet algorithm is presented in this paper, and it is validated on a high speed four cycle engine. The test results show that the improved method can detect misfire accurately even when the engine speed is very high.
Keywords :
engines; wavelet transforms; OBD system; engine speed; misfire detection; on-board diagnostics; wavelet algorithm; Acceleration; Continuous wavelet transforms; Discrete wavelet transforms; Engines; Laboratories; Multiresolution analysis; Signal analysis; Signal detection; Wavelet analysis; Wavelet transforms; Electronically-controlled gasoline engine; fault diagnosis; misfire; wavelet;
Conference_Titel :
Intelligent Vehicles Symposium, 2009 IEEE
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-3503-6
Electronic_ISBN :
1931-0587
DOI :
10.1109/IVS.2009.5164387
