柴油机电控直列泵系统压力动态特性研究(英文) |
| |
摘 要: |
|
收稿时间: | 29 April 2009 |
Dynamic characteristic investigation on the fuel pressure of diesel engines electronic in-line pump system |
| |
Authors: | You Liu Zhi-guo Yuan Li-yun Fan Bin-qi Tian |
| |
Institution: | (1) Meteorology Program, Department of Geography, Northern Illinois University, Davis Hall Rm. 118, DeKalb, IL 60115, USA |
| |
Abstract: | The electronic in-line pump (EIP) is a complex system consisting of mechanical, hydraulic, and electromagnetic parts. Experimental
study showed that the fuel pressure of the plunger and the fuel drainage of the pressure system after fuel injection could
result in fuel pressure fluctuation in the low pressure system. Such fluctuation exhibited pulsating cycle fluctuation as
the amplitude rose with the increase of the injection pulse width. The time domain analysis found that the pressure time history
curve and injection cylinders corresponded with a one-to-one relationship. By frequency domain analysis, the result was that
with the increase of the working cylinder number, the high frequency amplitude gradually increased and the basic frequency
amplitude gradually decreased. The conclusion was that through wavelet transformation, the low pressure signal simultaneously
moved towards low frequency as the high frequency of the wavelet transformation signal with the working cylinder number increased.
Lastly, by using the numerical model, the study investigated the simulation research concerning the relationship of the fluctuation
dynamic characteristic in the low pressure system and the fuel injection characteristic of the high pressure system, completing
the conclusions obtained by the experimental study. |
| |
Keywords: | |
本文献已被 CNKI 万方数据 SpringerLink 等数据库收录! |
|