Abstract：In order to improve the mixture formation and combustion quality in combustion chamber of DLH1105 diesel engine, the cylinder spray and combustion process were numerically simulated. Three combustion chambers of open combustion chamber, toroidal combustion chamber and reentrant combustion chamber were designed at constant compression ratio. 3D numerical simulation of the three type combustion chambers were achieved by STARCD software to obtain flow field, distribution of fuel mass fraction and temperature field in the diesel engine cylinder. The simulation result shows that cylinder spray and combustion process are consistent with those of visualized experiment, which means that the method of computational simulation is reliable. Reentrant combustion chamber has strong squish with long swirl period, which results in better mixture gas and combustion performance than those of toroidal combustion chamber and open combustion chamber. The pressure and temperature in reentrant combustion cylinder are high with low shoot formation and high NO amount.
潘剑锋, 卢青波, 王谦, 万彦辉, 张梦云. 柴油机燃烧过程的数值模拟及燃烧室改进[J]. 江苏大学学报（自然科学版）, 2012, 33(4): 390-395.
Pan Jianfeng, Lu Qingbo, Wang Qian, Wan Yanhui, Zhang Mengyun. Numerical simulation for combustion process of diesel engine and improvement of combustion chamber[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2012, 33(4): 390-395.
2012, Vol. 33 
