Study of the Impact of System Characteristics on Pressure Oscillations in a Common Rail Diesel Fuel Injection System
Date Published: 2005-04-11
Paper Number:2005-01-0910
DOI: 10.4271/2005-01-0910
Citation:
Beierer, P., Huhtala, K., Lehto, E., and Vilenius, M., "Study of the Impact of System Characteristics on Pressure Oscillations in a Common Rail Diesel Fuel Injection System," SAE Technical Paper 2005-01-0910, 2005, doi:10.4271/2005-01-0910.
This paper investigates the source of pressure fluctuations in a common rail (CR) system for high speed diesel engines as a function of injection parameters and system design (pipe between rail and injector). The pressure values are recorded experimentally at the inlet of the injector. In addition, a simulation model has been developed. The parameters include: injection pressure (800 to 1500 bar) and duration (0.4 to 1 ms), and connection pipe length (180 to 500 mm) and diameter (2.2 to 3 mm). The model shows good agreement with the measurements. The study shows that all parameters have an effect on the pressure oscillation at the injector inlet.
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