CAJ | 학술논문

讨论了缸内直喷发动机的优缺点和当前对该种发动机提出的要求，认为缸内直喷技术的关键是掌握和控制好混合气浓度在空间的分布和随时间的变化。其控制是在一定的喷油、点火控制策略下靠燃油喷射系统与缸内流场的合理匹配实现的。阐述了缸内直喷对上述两个方面提出的要求，并讨论了发动机排放及其解决方法。
토론료항내직분발동궤적우결점화당전대해충발동궤제출적요구，인위항내직분기술적관건시장악화공제호혼합기농도재공간적분포화수시간적변화。기공제시재일정적분유、점화공제책략하고연유분사계통여항내류장적합리필배실현적。천술료항내직분대상술량개방면제출적요구，병토론료발동궤배방급기해결방법。
The advantages and disadvantages of direct fuel injection in the cylinder and the requirements for the engine at present time are discussed. It is noted the key factor in direct fuel injection in the cylinder is to master and control perfectly the mixture density spreading in cylinder and the variables with time change. Its control can be realized by reasonable match of fuel injection system and flow field inside the cylinder under the conditions of determined fuel injection and ignition control. The requirements of two above - mentioned conditions inquired by direct fuel injection in cylinder are described, the engine emissions and their solutions are discussed also.