Study on Pressure Fluctuation of a Constant Pressure Fuel System

2017-01-0828

03/28/2017

Event
WCX™ 17: SAE World Congress Experience
Authors Abstract
Content
The pressure fluctuation characteristics of a constant pressure fuel system has great influence on its fuel injection characteristics. It is, therefore important to understand the impacts of these fluctuations in order to better study and optimize the fuel injection characteristics. In this study, the pressure fluctuation characteristics of the high pressure common rail system have been investigated experimentally. The transient pressure at different positions in the high pressure common rail system have been measured. The phase of pressure fluctuation during the injection process has been analyzed and the corresponding fluctuating characteristic parameters have been characterized for each phase. The changes in pressure wave propagation velocity, fuel injection pressure drop amplitude, wave amplitude, period and decay time are obtained by studying the fluctuation characteristic parameters caused by fuel pressure and temperature change. The relationship between fuel pressure drop and fuel density, pressure wave propagation velocity and fuel flow rate have been explained through theoretical analysis. This study provides a theoretical basis for the design of constant pressure fuel systems.
Meta TagsDetails
DOI
https://doi.org/10.4271/2017-01-0828
Pages
7
Citation
Wu, D., Sun, B., Xu, D., An, X. et al., "Study on Pressure Fluctuation of a Constant Pressure Fuel System," SAE Technical Paper 2017-01-0828, 2017, https://doi.org/10.4271/2017-01-0828.
Additional Details
Publisher
Published
Mar 28, 2017
Product Code
2017-01-0828
Content Type
Technical Paper
Language
English