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The Effect of Fuel injection Pressure on Diesel Engine Performance
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English
Abstract
To reduce exhaust emissions and fuel consumption, the effect of high pressure fuel injection was investigated with in-cylinder fuel spray observation and single cylinder engines.
Spray impingement on the cavity wall promotes mixing with air and reduction in the nozzle area extends this wall impingement as a result of increasing both fuel injection pressure and injection period. There exists an optimum range for the injection period.
Increased injection pressure by modifying injection rate of fuel pump and nozzle area, improves smoke and fuel consumption at low and medium speeds in particular. To extend these effects of high pressure injection, more optimized combustion system and minimized injection equipment drive torque must be required.
To resolve the problem of high pressure injection such as higher combustion noise and increase in NOx emissions, the combination with pilot injection must be one of the most effective ways.
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Authors
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Citation
Shimada, T., Shoji, T., and Takeda, Y., "The Effect of Fuel injection Pressure on Diesel Engine Performance," SAE Technical Paper 891919, 1989, https://doi.org/10.4271/891919.Also In
References
- Hiroyasu Arai “Penetration and spray angle of diesel spray,” anthology of SAE of Japan 21 1980 5 11
- Kosaka Kobayashi Kamimoto “Research on transient spray structure close to the nozzle hole,” anthology of treatises for 7th co-symposium on internal combustion engines July 13 14 1988 Tokyo
- Fujii Tabata Arai Hiroyasu “Average droplet size of diesel spray in the vaporizing stage (2nd part),” anthology of treatises for 7th co-symposium on internal combustion engines July 13 14 1988 Tokyo
- Hirakouchi Kanairo Nakagawa “Performance improvement of diret injection type high-speed diesel engine through observation of combustion,” Mitsubishi Heavy Industries Technical Bulletin 25 1 1988-1