Adaption of Fuel Injection Parameters for Turbocharged Diesel Engines Working at High Altitude

In order to enhance the performance of turbocharged diesel engine at a high altitude,three different schemes are compared by virtue of simulation. The effectiveness of the method to enhance the power of engine at a high altitude is verified by adjusting the fuel supply parameters without modifying the engine structures or adding any accessories. A model for a V6 turbocharged engine equipped with a new compressor is established for the highland simulation. And then the model is certified by experimental data. The influence of fuel injection advance angle on the power,the turbine intake temperature and the maximum combustion pressure is investigated. Based on the research results,the detailed methods to adjust the fuel supply parameters are put forward. Three different simulating schemes are calculated and compared through simulation. The result shows that the rated power of engine at the altitude of 4 500 m can reach up to 75% of its counterpart by using this method to adjust the injecting timing and fuel injection.