Numerical analysis of a pulsation damper in fuel injection rails
by Richard A. Roberts, Jie Cui
International Journal of Vehicle Systems Modelling and Testing (IJVSMT), Vol. 1, No. 4, 2006

Abstract: It is important to maintain a stable fuel rail pressure at all operating conditions for optimal engine operation. Pressure fluctuations within the system are created by the rapid opening and closing of the fuel injectors. The wave amplitude can be reduced by the use of a pressure-damping device. The commercial computational fluid dynamics program, CFX, was used to model pressure pulsation within the rail. The numerical results compared favourably to the measurements. Based on the parametric studies, a general guideline was developed to identify the optimal damper configuration for better engine performance under different conditions.

Online publication date: Tue, 02-May-2006

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