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

fYear

2009

fDate

3-5 June 2009

Firstpage

833

Lastpage

837

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Vehicles Symposium, 2009 IEEE

Conference_Location

Xi´an

ISSN

1931-0587

Print_ISBN

978-1-4244-3503-6

Electronic_ISBN

1931-0587

Type

conf

DOI

10.1109/IVS.2009.5164387

Filename

5164387