基于材料-工艺-润滑协同优化的汽车齿轮传动效率提升技术

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中图分类号：U461.2 文献标识码：A 文章编号：1003-8639（2025）10-0136-03

【Abstract】This paper mainly analyzes the efect of materials，machining and lubrication technology on improving the transmission efficiencyof automobile gears.In terms of materials，Cr-Moaloystel（18CrNiMo7-6）isused and carburizedandquenched to makethe gearsurface extremely hard （58～63 HRC）and wear-resistant，andthe depth of hardenedlayer is2.0～3.5mm.Inmachining，high-precision grindingandsuperfinishing （Klingelnberg P26detection）are used to control the tooth direction deviation in a very small range（ ⩽2μm/100mm ）tomake the tooth surface contact more uniform.In lubrication，synthetic gearoil and pressre circulation lubricationare selected based on DowsonHigginson equation toensure thattheoilflm is thick enough tocompletelyseparate thetooth surfaces.The frictionloss and vibration noise are efectively reduced by the cooperation of the threewhich provides a reference for developing efficient powertrain.

【Key words】gear transmisson eficiency；powertrain;precision machining;carburizing and quenching;oil film strength

0 引言

汽车是现代生活中随处可见的交通工具，主要分为燃油车、电动汽车两大类，动力总成的效率直接决定了车辆能耗和续航里程。（剩余4086字）