The Study on the Top Clearance Plunger Pump in Diesel Engine

Abstract:

The simulation method was used to study the fuel supply and injection characteristics of diesel top clearance plunger pump. The results show that the top clearance plunger pump relative advance of fuel supply is larger than that of the traditional plunger, and it can achieve the purpose of injection advance when the oil pump operate at 600~1000rpm. Through optimizing the structure of top clearance plunger, the amount of the injection advance can become larger and the advanced range of speed is increased. After optimized, the BSFC (Brake Specific Fuel Consumption) is 4.3% lower than that before when the diesel engine matched the top clearance plunger, which shows its advantage especially in working at high-speed.

• Periodical: Advanced Materials Research (Volumes 805-806)
• Pages: 1755-1758
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.805-806.1755
• Online since: September 2013
• Authors: Jie Zhong Zhang*, Qing Ping Zheng
• Keywords: Advance Features, BSFC, High-Speed Performance, Top Clearance Plunger

References

[1] Brien Fulton，Louis Leviticus，Variable Injection Timing Effects on the Performance and Emissions of a Direct Injection Diesel Engine[C]. SAE 932385.

DOI: 10.4271/932385

[2] Tan Sixi, Zhang Zongjie. Investigation on Top Clearance Plunger[J]. Chinese Internal Combustion Engine Engineering. 2005, (6) Vol. 26(in Chinese).

[3] D. A. Nehmer,R. D. Reitz. Measurement of the effect of injection rate and split injections on diesel engine soot and NOx emissions[C]. SAE 940668.

DOI: 10.4271/940668

[4] Noboru Hikosaka. A view of the future of automotive diesel engines. SAE Paper 972682, (1997).

[5] Beck etc. Effects of Fuel Injection on Diesel Combustion[C]. SAE Paper880299.