Browse > Article

Cam Profile Design of a Fuel Pump Using Dynamic Analysis  

Kim Bong-Ho (계명대학교 대학원 기계공학과)
Lee Boo-Youn (계명대학교 기계자동차공학부)
Kim Won-Jin (계명대학교 기계자동차공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.30, no.1, 2006 , pp. 58-64 More about this Journal
Abstract
This work focuses on reducing the noise and vibration levels of an LPi fuel pump, which are generated from the dynamic motions of pump elements and non-uniform flow of fuel. The noise and vibration levels increase as the revolution speed of the cam goes up. The fuel pump consists of five cavity cells, plungers and diaphragms, which are driven by the cam. The optimal design of the cam profile is performed to decrease the accelerations of moving Parts and to obtain a smooth hydraulic force through a dynamic analysis of a cam-plunger mechanism. The cam-Plunger with a cavity is modeled as a 2 degrees of freedom system having non-linear contacts, the cam profile being represented in terms of Fourier series in order to determine the optimal shape of the cam. From the optimized cam Profile, the acceleration of the diaphragm is reduced in $78\%$, the hydraulic force becoming smoother in case that the hydraulic force is rapidly dropped.
Keywords
Displacement type pump; Fuel pump; Dynamic analysis; Fourier series; Optimal cam profile;
Citations & Related Records
연도 인용수 순위
  • Reference
1 D. H. Kum, W. J. Kim and B. H. Lee, 'Noise Reduction for the Fuel Tank module of Liquid Injection LPG Engine', Bulletin of the Institute for Industrial Science, Keimyung Univ., Vol. 26, No. 1, pp. 81-89, 2003
2 F. Y. Chen, 'A Survey of the State of the Art of Cam System Dynamic', Mechanism and Machine Theory, Vol. 12, pp. 201-204, 1977   DOI   ScienceOn
3 W. J. Kim, H. S. Jeon and Y. S. Park, 'Contact Force Prediction and Experimental Verification on an OHC Finger-Follower Type Cam-Valve System, Experimental Mechanics', Vol. 31 No. 2, pp. 150-156, 1991   DOI
4 IMSL Fortran Numerical Library, User's Manual, Visual Numerics Inc, 2004
5 D. J. Kim, 'A Simulation Model of Valve Train Dynamics for Cam Profile Optimizations', Trans. of the KSAE, Vol. 15, No. 2, pp. 53-63, 1993   과학기술학회마을
6 R. J. Roark and W. C. Young, Formulas for Stress and Strain, McGraw-Hill International Editions, pp. 513-530, 1986
7 W. J. Kim, H. S. Jeon and Y. S. Park, 'Analytical and Experimental Motion Analysis of Finger Follower Type Cam-Valve System with a Hydraulic Tappet', KSME Journal, Vol. 4 No. 1, pp. 40-47, 1990   DOI
8 F. Y. Chen, Mechanics and Design of Cam Mechanisms, Pergamon Press, 1982
9 K. J. Park,'A Study on Optimum Cam Profile Extraction Considering. Dynamic Characteristics of a Cam-Valve System', Master thesis, KAIST, 1987