车用三缸1.0L增压直喷汽油发动机的研发

Development of a 3-cylinder 1.0-L turbocharged gasoline direct injection engine

为满足传统及新能源汽车的应用需要,自主研究开发了一款三缸1.0L增压直喷汽油机。该发动机采用了顶置高压直喷、涡轮增压、进排气可变正时(DVVT)、集成排气歧管、可变排量机油泵等先进技术;同时,为获得优秀的振动、噪声、舒适性(NVH)的性能,对发动机本体进行了多项优化。结果表明:该发动机由于高效燃烧系统、低摩擦设计及智能热管理系统而获得出色的燃油经济性,最低油耗率230g/kWh;该三缸发动机的NVH性能可以达到四缸机的水平。

Geely developed a completely new 3-cylinder 1.0 L turbocharged gasoline direct injection engine to fulfill the applications for both conventional and new energy vehicles.This engine incorporated several advanced technologies,such as top-mounted high pressure injector,turbocharger,dual variable valve timing(DVVT),integrated exhaust manifold,variable oil pump.The results show that the combination of efficient combustion system,low friction design and innovative thermal management realizes the outstanding fuel economy,and the minimum brake specific fuel consumption is 230 g/(kWh)in the entire map.The base engine is intensively refined to achieve excellent NVH(noise,vibration and harshness)performance,eventually measurements show that this 3-cylinder engine can realize similar NVH performance as 4-cylinder inline engine.