Two-phase Flow of Liquid-gas in Diesel Fuel Injection System and Their Effect on Engine Performances  

作　　者：Yongling He ,Zhihe Zhao ,Jianxin Liu ,Huiyong Du Mm Li ,Yongping Zong Luoyang Institute of Technology, Luoyang 471039, China E-mail: [e-mail] 

出　　处：《Journal of Thermal Science》2001年第3期223-227,共5页热科学学报（英文版）

基　　金：99' Fotmtw Ofoutstanto beg Schoto ot ha bo ot dri(99l8). Key Proec of Foundation of has ofMStry of Nallonal Educatin, ~ect

摘　　要：In this paper, by using high-speed camera, CCD camera, signal and graph acquisition system, and other experimental instruments, investigation on liquid-gas two-phase flow in diesel fuel injection system and their effect on engine performances were made. Emerging and bursting of cavitation in the cavity above pump delivery valve, in injection pipe, and in fuel trough of injector of the fuel injection system were observed and mechanism of cavitation were discussed. Effects of liquid-gas two-phase flow on propagation velocity of pressure wave of the system and on irregular injection were analyzed. Two types of cavitation, long Living time cavitation and short living time cavitation, in the cavity above pump delivery valve of diesel fuel injection system were observed.

关 键 词：diesel engine two-phase flow in fuel injection system irregular injection. 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]