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Common Rail Fuel Injection System for Improvement of Engine Performance on Heavy Duty Diesel Engine
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English
Abstract
With the intention of improving engine performance and emissions, the authors examined the influence of the method of initial fuel injection quantity reduction and of the injector configuration of a common rail fuel injection system on engine performance and exhaust emissions. Results showed that decreasing the nozzle hole diameter was an effective way to reduce the initial injection quantity without increasing black smoke. Compared to a three-way type injector, it was found that a two-way type injector can greatly reduce the amount of fuel leakage from the electromagnetic injector control valve and fuel consumption could be further improved by reduction of the driving loss. Furthermore, the increase of driving losses with higher injection pressure was small, and as a result, higher pressure injection was possible. With the two-way type injector, fuel injection pressure was raised and the nozzle hole diameter was reduced as much as possible, so that reduction of exhaust emissions and improvement of performance in the partial load region was possible without degrading high load or high speed performance.
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Citation
Kato, T., Koyama, T., Sasaki, K., Mori, K. et al., "Common Rail Fuel Injection System for Improvement of Engine Performance on Heavy Duty Diesel Engine," SAE Technical Paper 980806, 1998, https://doi.org/10.4271/980806.Also In
References
- Shimada T. et al “The Effect of Fuel Injection Pressure on Diesel Engine Performance” SAE 891919
- Yamaki Y. et al “Heavy Duty Diesel Engine with Common Rail Type Fuel Injection System”
- Mori K. et al “Worldwide Trends in Heavy-Duty Diesel Engine Exhaust Emission Legislation and Compliance Technologies” SAE 970753
- Miyaki M. et al “Development of New Electronically Controlled Fuel Injection System ECD-U2 for Diesel Engines” SAE 910252
- Fujino Y. et al “New Mitsubishi V8 19-Liter Turbocharged and Intercooled Diesel Engine SAE 971673