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Development of a Mechanical Pilot Injection Device for Automotive Diesel Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 01, 1989 by SAE International in United States
Annotation ability available
It is well known that pilot injection is an effective method of reducing diesel knock noise during idling, but no actual system has as yet been commercially produced.
With the objective of developing a practicable pilot injection device, simulations were conducted of various simple mechanisms in order to determine the best specifications and analyze the fuel injection characteristics.
Based on these results, a chamber expansion type pilot injection device, which enables the injection pump pressure chamber volume to be increased at a given moment during the fuel compression stroke, has been developed and has been found to remarkably decrease knock noise during cold idling. An investigation into the effects of this device on output power, exhaust emissions, cold startability and durability revealed that it is eminently suitable for practical application.
|Technical Paper||The Effect of Fuel injection Pressure on Diesel Engine Performance|
|Technical Paper||NOx Reduction by Injection Control|
CitationSato, T., Yamada, M., Michio, K., Fujimura, T. et al., "Development of a Mechanical Pilot Injection Device for Automotive Diesel Engines," SAE Technical Paper 891962, 1989, https://doi.org/10.4271/891962.
- Furubayashi M. “Idling Noise of Light-duty Diesel Engine and its Control” Journal of the Society of Automotive Engineers of Japan 37 12 1983 1301 1306 in Japanese
- Mayer K.P. “Fuel Economy, Emissions and Noise of Multi-spray Light Duty DI Diesels - Current Status and Development Trends” IMechE, C421 /84 (SAE 841288
- Inoue T. Yamada T. Shindo K. Yamada M. Imai K. “A Simulation of Diesel Injection System using a Hybrid Computer” FISITA Congress, Paper 845035 May 6 11 1984