JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Comparison of engine fault diagnostic techniques using the crankshaft speed fluctuation
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Comparison of engine fault diagnostic techniques using the crankshaft speed fluctuation
Kim, Se-Ung; Bae, Sang-Su; Kim, Eung-Seo;
  PDF(new window)
 Abstract
^In this paper, diagnostic technique for detecting the engine faults, especially misfire, are introduced and compared with each other under the same conditions. With all of them the instantaneous angular velocitys, measured at the flywheel, were analyzed. The techniques include the frequency analysis, auto-correlation function, velocity index, acceleration index, maximum acceleration index, and integrated torque index. Since the main driving components for the angular velocity fluctuation are both the pressure and the inertia torque, the component of the inertia torque in it must be excluded to extract the information of the combustion from the angular velocity. To do this, it is required to consider only the first half of the combustion period in the angular velocity fluctuations, which has never been proposed in the existing methods. On the basis of this fact, the results show that the most effective diagnostic technique is maximum acceleration index.
 Keywords
Engine Diagnostic Technique;Pressure Torque;Integrated Torgue Index;Maximum Acceleration Index;Angular Velocity Fluctuations;
 Language
Korean
 Cited by
 References
1.
IEEE Trans. Industrial Electronics, 1985. vol.IE 32. 4, pp.294-300

2.
서울대학교 공학 석사 학위 논문, 1995.

3.
한국 자동차 공학회 춘계학술대회 논문집, 1995. vol.1. pp.34-39

4.
PhD Thesis, the University of Michigan, 1986.

5.
서울대학교 공학박사 학위 논문, 1996.

6.
Mail Out #95~03, 1995. pp.9-13

7.
SAE Paper 930399, 1993.

8.
SAE Paper 920298, 1992.

9.
SAE Paper 900232, 1990.

10.
SAE Paper 870546, 1987.

11.
SAE Paper 940975, 1994.

12.
SAE Paper 890884, 1989.

13.
SAE Paper 901768, 1990.

14.
SAE Paper 940144, 1994.

15.
SAE Paper 932411, 1993.

16.
SAE Paper 890485, 1989.