This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Analysis of Bypass Control Fuel Injection Systems for Small Diesel Engines by Digital Computer
Annotation ability available
Sector:
Event:
Fleet Week
Language:
English
Abstract
Conventional analyses are concerned with an overflow type of pump. However, in this paper, the bypass control type of pump is analyzed, and this analysis includes a fuel tank, an oil pipe, and a feed chamber, which until now have scarcely been analyzed. The potential energy and fluid resistance of oil pipes are considered, and in the high-pressure pipe, the fluid resistance is considered.
In conventional analyses, when a void appeared in the fuel injection system, it was necessary to substitute a different equation, and the treatment on the volume of void was believed to be unsatisfactory. In this paper, improvements on these points have been attempted.
When simulating a fuel injection system, it is necessary to determine such physical characteristics as the compressibility of fuel oil, the specific weight of fuel oil, the sonic velocity of fuel oil, the flow coefficient, etc. However, in the experimental characteristics obtained previously, there have been some unclear questions regarding the mixed air, the oil temperature, and the pressure. In this paper, these characteristics of the fuel and of the injection system were measured experimentally.
By incorporating these results in the simulated calculation, the results are in good agreement with the actual phenomenon, even when there is a void in the system and the computation time is short. The calculational procedure is thus considered to be applicable for practical purposes.
Authors
Citation
Yamaoka, K., Saito, A., Abe, N., and Okazaki, M., "Analysis of Bypass Control Fuel Injection Systems for Small Diesel Engines by Digital Computer," SAE Technical Paper 730664, 1973, https://doi.org/10.4271/730664.Also In
References
- Knight B. E. “Fuel Injection System Calculations.” Proceedings IME 1 1960-1961 25
- Sitkei G. Springer 1964
- Vogel W. MTZ 24 1 January 1963 7
- Melcher K. MTZ 24 8 August 1963 277
- Huber E. W. Schaffitz W. MTZ 27 4 1966 146
- Nagao F. Ikegami J. “Fuel-Injection System Simulation by Computer.” Preprint of 44th Annual Meeting Kansai Branch Japan Soc. Mech. Engrs. March 1969 43
- Hiroyasu H. Matsunari F. “Analytical Study of Fuel Injection System.” JSME Transactions 260 1968 755
- Matsuoka S. et al. “Study of Fuel Injection System in Diesel Engines.” Preprint of Lecture Meeting JSME 201 1968-1969 117
- Becchi G. A. “Analytical Simulation of Fuel Injection in Diesel Engines.” SAE Transactions 80 1971 paper 710568
- Wylie E. B. Bolt J. A. El-Erian M. F. “Diesel Fuel Injection System Simulation and Experimental Correlation.” SAE Transactions 80 1971 paper 710569
- Rosselli A. Badgley P. “Simulation of the Cummins Diesel Injection System.” SAE Transactions 80 1971 paper 710570
- Yamaoka K. Saito A. “Computer Technique for Evaluation of Cavitation Characteristics of Certain Phases of Fuel Injection in a Fuel Injection System.” Paper 730663 SAE Combined Commercial Vehicle Engineering and Operations and Powerplant Meetings Chicago June 1973
- Hamabe G. Nagao F. “On the Compressibility of Fuel Oils.” Preprint of Lecture Meeting Kansai Branch JSME 36-196 1932-1937 518
- Bosch W. β MTZ 25 7 1964 268