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Study of the In-Line Pump System for Diesel Engines to Meet Future Emission Regulations
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English
Abstract
In an effort to protect the earth's environment, emission regulations in the diesel engine field are becoming increasingly strict. One way of meeting these regulations is to atomize the fuel spray by using a fuel injection system with high-pressure injection, which activates engine combustion.
With current in-line pump systems, however, it is still possible to satisfy the demand for cleaner emissions by improving the fuel spray, through measures such as reviewing high-pressure injection and initiating improvements in the nozzle. This report describes the new in-line pump system for medium duty diesel engines to meet future emission regulations.
In this report, we will describe how analytical technology, such as computer simulation, was used on the pump side to make improvements for higher injection pressure. We will also describe how this technology was used on the nozzle side, to improve fuel spray characteristics with high flow velocity at the injection nozzle spray holes, and thus created a high-performance, highly reliable in-line pump system capable of meeting upcoming regulations on emissions.
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Citation
Furuta, K., Sasaki, S., and Tokuda, M., "Study of the In-Line Pump System for Diesel Engines to Meet Future Emission Regulations," SAE Technical Paper 980812, 1998, https://doi.org/10.4271/980812.Also In
References
- Nishimura M. et al. “The NIPPONDENSO In-line Pumps with Electric Control for the Clean Diesel Engine” SAE 870436
- Watanabe H. et al. “Cavitation in the Fuel Injection System of Diesel Engines” Proceeding of International Symposium on Cavitation April 1986 Sendai, Japan 269 274
- Suzuki K. et al. “Study of Abnormal Fuel Delivery Characteristics in High pressure Injection System” SAE 821073
- Itoh S. et al. “Simulation analysis on Dynamic Characteristics of Diesel Fuel Injection Systems” SAE 851586
- Sasaki S. et al. “Advanced In-line Pump for Medium-Duty Diesel Engines to Meet Future Emission Regulations” SAE 910182
- Yoda T. et al. “Influence of Injection Nozzle Improvement on DI Diesel Engine” SAE 970356