直接喷射式燃烧技术是近年来国际上流行的一种先进的柴油机燃油燃烧技术，它与传统的涡流室、预燃室等燃烧系统有着显著的区别。直喷式柴油机的工作过程：活塞顶部有较大凹坑与汽缸盖、汽缸体共同组成燃烧室，燃油靠多孔喷油器在高压下（＞18MPa）喷火燃烧室。汽缸盖有螺旋进气 In recent years, the direct injection combustion technology is an internationally advanced diesel fuel combustion technology, which is significantly different from the traditional combustion systems such as the swirl chamber and the pre-combustion chamber. Direct injection diesel engine working process: the piston at the top of a larger pit and cylinder head, the cylinder block together constitute the combustion chamber, the fuel by porous injector under high pressure (> 18MPa) flame combustion chamber. Cylinder head with spiral inlet