车用汽油机的节油潜力及高效汽油机的可行性

Potential and Feasibility of High-Efficiency Gasoline Engines for Vehicle

本文通过对未来30年的主要交通能源和乘用车动力主流产品的分析,指出研发汽油机节油技术的重要性。车用汽油机还有很大节油潜力,尤其是均质压燃汽油机克服了点燃燃烧对发动机空燃比和压缩比的限制,能够提高汽车平均燃油效率达25%以上。均质压燃的燃烧时间能在各种情况下得到可靠控制,因而能够在车辆上应用。目前国内车用发动机技术研发现状不容乐观。要避免在10年内陷入困境,应建立车用发动机创新研究的体制。

This paper analyzed the major transportation energy and the mainstream powertrain products of passenger cars in the next 30 yearsl,eading to a conclusion that the development of gasoline engine technologies is important.Gasoline en-gines,especially homogeneous charge compression ignition(HCCI)engines,Because the constrains on air-fuel ratio and compression ratio of a gasoline engine due to the need of spark ignition and flame propagation have been removed,an HCCI engine can significantly improve vehicle fue...