摘要
在MATLAB/Simulink环境下建立了柴油机排温自动修正算法仿真模型,仿真结果表明该算法可使柴油机各缸排温在较小范围内波动,并逐渐趋于一致。将该算法在实机上进行了试验验证,并根据试验结果对其进行优化。结果表明:在全工况范围内,采用排温自动修正算法可使柴油机各缸排温一致性得到明显改善,优化后排温温差最大值从90℃下降到29.4℃,排温超差比从15.2%降至4%左右,柴油机工作更加柔和,噪声小。
A simulation model of exhaust temperature automatic correction algorithm was built up using MATLAB/Simulink, the simulation results prove that this algorithm could keep the diesel engine exhaust temperature of each cylinder fluctuating within a small range, and gradually converge. The algorithm was verified through tests on an engine and optimized according to the results. The results show that the conformity of exhaust temperatures of varied engine cylinders has been significantly improved by exhaust temperature automatic correction algorithm under all working conditions. The maximum exhaust temperature difference was reduced from 90℃ down to 29.4℃ and the ratio of temperature difference from 15.2% down to 4% , the diesel engine opreated more gently, and with less noisy.
出处
《柴油机》
2017年第2期28-32,共5页
Diesel Engine
关键词
柴油机
排温
自动修正
算法
diesel engine
exhaust temperature
automatic correction
algorithm
