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采用双燃料增压中冷发动机,模拟了不同转速、转矩、进气流量以及进气温度对HC排放的影响。结果表明,在一定范围内HC排放会随着进气流量和转速增加而升高,随转矩和进气温度的增加而减小。1 600 r/min时HC排放水平高于其他各转速,此转速对应的最高HC排放水平进气流量、转矩和进气温度分别为80 kg/h、30 N·m和28℃。对1 600 r/min下各参数进行拟合得出了最大HC排放水平对应的进气流量、转矩和进气温度,拟合效果较好。通过相关性分析,进气温度、转速和进气流量对HC排放影响显著,转矩对HC的排放影响不明显。
The dual-fuel turbocharged intercooled engine was used to simulate the effect of different rotational speed, torque, intake air flow and intake air temperature on HC emissions. The results show that within a certain range of HC emissions will increase with the intake flow rate and speed increased, with the torque and intake air temperature decreases. HC emissions at 1 600 r / min are higher than those at other speeds, and the maximum HC emission level intake flow rate, torque and intake air temperature are 80 kg / h, 30 N · m and 28 ° C, respectively. Fitting the parameters of 1 600 r / min to obtain the maximum HC discharge level corresponding to the intake flow, torque and intake air temperature, the fitting effect is better. Correlation analysis shows that intake air temperature, rotational speed and intake air flow have a significant impact on HC emissions and torque has no significant effect on HC emissions.