间喷式柴油机缸内压力精确测量及放热率计算

Pressure Measurement and Heat Release Rate Computation in Diesel Engine with Indirect Injection

提出了一种间喷式柴油机缸内压力精确测量的新方法，即直接测量主副室的压差．对压力测量结果和放热率计算结果作了分析和对比，结果表明，用此方法测得的压力及压差具有更高的精度，对提高放热率计算精度有明显好处．

A new method for accurate pressure measurement, i.e., to measure the pressure difference between main and pre chamber directly, in combustion chamber of an indirect injection diesel engine is presented. The results of pressure measurement and heat release rate computation are analyzed and compared. It is shown that the pressures and pressure differences measured using the new method is of higher accuracy, and it is also good in the improvement of heat release rate calculation accuracy.