Abstract: In this paper, the development trend of various energy-saving technologies in the future is studied and judged through in-depth analysis of relevant data of various energy-saving technologies for passenger cars, and help industry enterprises scientifically choose the development path of energy-saving technologies. In general, the rapid application of technologies such as turbocharging, in cylinder direct injection, three cylinder engine, idle start stop, and advanced transmission has played a important role in the development of energy saving vehicle in the past five years. However, as the carrying rate of these energy saving vehicle technologies tends to saturate, enterprises need to further reduce the average fuel consumption level of automobiles by developing 48 V and hybrid electric vehicle (HEV) and other electrification technologies, and the industry chain needs to make corresponding layout in advance.

Key words: Energy saving vehicle; Hybrid electric; Three-cylinder engines; Idle start stop

摘要： 文章通过对历史乘用车各项节能技术的应用情况进行跟踪分析，识别影响其发展的关 键驱动力，从而研判未来各项节能技术的发展趋势，助力行业企业科学选择节能技术发展路 径。总体来看，涡轮增压、缸内直喷、三缸发动机、怠速启停、先进变速器等技术的快速应 用对过去五年汽车节能发展发挥了巨大的作用，但随着这些节能技术搭载率趋于饱和，行业 企业需要通过发展 48 V 和混合动力汽车（HEV）等电气化技术来助推汽车平均油耗水平进一 步下降，产业链需做好相应提前布局。

关键词: 节能汽车；混合动力；三缸发动机；怠速起停