Study On The Waste Gas Heat Regulation For Diesel Engine And Its Application

The regulation of waste gas heat for the 411 5T diesel engine and its application has been examination in this thesis. The mathematical model between waste gas heat and speed, load, pipe Iength( pipe length means that length of pipe between measure point and point of engine waste pipe?s connection, following chapter, it is called pipe length for short) has been obtained. So relationship between waste gas and various speed, load and pipe length is obtained. It offer the theory dependence to waste gas heat application The experimental result indicate that biggest waste gas heat is 36.48k1/s. so the application latent capacity is high. By analyzed experimental result, following conclude are obtain: the value of waste gas heat become bigger while load and speed become bigger, and it become lower while pipe length become bigger. In general, pipe length is the most important factor to application of waste gas heat speed is secondary and load is third. A heat transfer is designed In order to extract heat from waste gas. To made the transfer?s convey heat capacity is the biggest under condition of the area that heat pipe is fixed is 0.2182 in2, factors that have effect on heat transfer function is optimized and optimizing value is obtained. Engine power test experimental is done under condition with heat transfer and without it. Experimental result indicate that the heat transfer is good. Efficiency of heat transfer is 38%, can get 11.72 kJ/s heat from 411 5T diesel engine at a second. Diesel engine?s fuel consumption ration has almost not change after the heat transfer is fixed on the engine, value of Rb is low slightly, noise is high slightly. Property of 411 ST diesel engine has almost no change fixed a transfer on it. The study results of this thesis offer theory dependence to the rational application to engine waste gas. Postgraduate: Ren Xianzhong Supervisor: Chen HaiTao Associate-Prof.