Papers by Author: Yin Yan Wang

Abstract: In order to solve cylinder outbreak problem of high pressure, the blowoff system has been added at transformation process from conventional turbo diesel engine to sequential turbocharing diesel engine. Set up air bleeder valve model of diesel engine sequential turbocharing high condition based on SIMULINK software platform and the air bleeder valve regulated by fuzzy PI control strategies, when the stable operation and in low load conditions of diesel engine, analyses the burst control effect as increase the amount of fuel delivery at different situation. The simulation results show that the model has fast response, high control accuracy and good control effect of high burst pressure, achieve control of diesel engine performance, fuel economy and reliability.

Abstract: A computer model for a TBD234V12 marine high-speed diesel engine with 2 turbocharger(2TC) is built on GT-POWER. For validating the computer model, a calculation to the conventional turbocharging system has been done firstly, and the results show good agreement with experimental data. The computer model has then been used for predictive studies of the diesel engine with the proposed STC system on the mapping characteristics. From these results, it can be seen that the STC system can not only improve the part load performance of the diesel engine obviously, but also enlarge the operating range of the marine diesel engine.

Abstract: The experimental system was established in order to study the dynamic and economic performance of vehicle engine fuelled with LPG. Based on the experimental system, the variable experimental study including engine power, torque and consumption rate were carried out. The l results showed that with the rise of the engine rotational speed, power and torque of the engine fueled with LPG increased first and then decreased, but all of them were lower than that of the 93#gasoline. The consumption rate of the LPG was better than the 93#gasoline for the engine case at 2000r/min and 4000r/min on the energy consumption rate.