介绍了利用电控燃油喷射技术、多气门技术和涡流控制阀技术在汽油机上组织稀薄燃烧的方法，对两种稀燃方案——涡流轴向分层稀燃和滚流分区分层稀燃进行了试验研究，结果表明：两种方案分别能在空燃比大于２３、２７时稳定工作，并且能显著提高燃料经济性。在高负荷时采用均质混合气滚流快速燃烧方案，以弥补一般稀燃发动机最大功率有损失的不足 The paper introduces the method of lean combustion in gasoline engine by electronically controlled fuel injection technology, multi-valve technology and eddy current control valve technology. The experimental results show that the two schemes can work stably when the air-fuel ratio is more than 23 and 27, respectively, and can significantly improve the fuel economy. In the high load with a homogeneous mixture tumble rapid combustion program to compensate for the general loss of maximum power loss of lean-burn engine