行程缸径比stroke-boreratio混合比mixture ratio压缩压力compression pressure制动平均有效压力 brake meaneffectivepressure(bmep)空燃比airfuelratio燃空比 fuel air ratio燃料当量比fuelequivalenceratic扭矩torque单缸功率power per cylinder升功率powerperliter升扭矩 torque per liter升质量mass per liter减额功率deratingpower输出马力shafthorsepower马力小时，马力时horsepower-hour总马力 gross horse power总功率grosspower净功率netpower燃油消耗量fuel consumption比燃料消耗率specificfuel consumption空气消耗率airconsumption机油消耗量oilconsumption
行程缸径比 stroke-bore ratio 混合比 mixture ratio 压缩压力 compression pressure 制动平均有效压力 brake mean effective pressure(bmep) 空燃比 air fuel ratio 燃空比 fuel air ratio 燃料当量比 fuel equivalence ratio 扭矩 torque 单缸功率 power per cylinder 升功率 power per liter 升扭矩 torque per liter 升质量 mass per liter 减额功率 derating power 输出马力 shaft horsepower 马力小时，马力时 horsepower-hour 总马力 gross horse power 总功率 gross power 净功率 net power 燃油消耗量 fuel consumption 比燃料消耗率 specific fuel consumption 空气消耗率 air consumption 机油消耗量 oil consumption
有效马力nethorsepower额定马力ratedhorsepower马力重量系数horsepower-weightfactor制动功率brakehorsepower制动热效率brakethermalefficiency总效率 overall efficiency排烟极限功率smoke limiting horsepower功率曲线powercurve机械损失mechanicalloss机械效率mechanicalefficiency有效热效率effectivethermal efficiency充气系数volumetric efficiency过量空气系数coefficientofexcessair适应性系数adaptivecoefficient扭矩适应性系数coefficient of torque adaptibility转速适应性系数speedadaptivecoefficient强化系数coefficientofintensification校正系数correctionfactor换算系数conversionfactor活塞平均速度meanpistonspeed发动机转速engine speed（rotational frequency）急速转速 idling speed
有效马力 net horse power 额定马力 rated horse power 马力重量系数 horsepower-weight factor 制动功率 brake horse power 制动热效率 brake thermal efficiency 总效率 overall efficiency 排烟极限功率 smoke limiting horsepower 功率曲线 power curve 机械损失 mechanical loss 机械效率 mechanical efficiency 有效热效率 effective thermal efficiency 充气系数 volumetric efficiency 过量空气系数 coefficient of excess air 适应性系数 adaptive coefficient 扭矩适应性系数 coefficient of torque adaptibility 转速适应性系数 speed adaptive coefficient 强化系数 coefficient of intensification 校正系数 correction factor 换算系数 conversion factor 活塞平均速度 mean piston speed 发动机转速 engine speed (rotational frequency) 怠速转速 idling speed
经济转速economicspeed起动转速 starting speed最低稳定工作转速lowest continuous speed with load最大扭矩转速speed at maximumtorque最高空转转速maximumnoloadgovernedspeed调速speed governing超速overspeed怠速idling转速波动率 speed fluctuation rate工况 working condition(operating mode)额定工况declaredworkingcondition变工况 variable working condition稳定工况steadyworkingconditior空载 no-load全负荷fullload超负荷overload部分负荷part load充量（进气）charge旋转方向direction ofrotation顺时针clockwise逆时针 counter-clockwise左转left-handrotation
经济转速 economic speed 起动转速 starting speed 最低稳定工作转速 lowest continuous speed with load 最大扭矩转速 speed at maximum torque 最高空转转速 maximum no load governed speed 调速 speed governing 超速 overspeed 怠速 idling 转速波动率 speed fluctuation rate 工况 working condition(operating mode) 额定工况 declared working condition 变工况 variable working condition 稳定工况 steady working condition 空载 no-load 全负荷 full load 超负荷 overload 部分负荷 part load 充量（进气） charge 旋转方向 direction of rotation 顺时针 clockwise 逆时针 counter-clockwise 左转 left-hand rotation
右转right-hand rotation外径majordiameter中径 pitch diameter内径minor diameter径向间隙radial clearance发动机性能engineperformance加载性能loading performance起动性能startingperformance加速性能accelerationperformance动力性能powerperformance排放性能 emission performance空转特性 no load characteristics负荷特性partthrottlecharacteristics调速特性 governor control characteristics万有特性mappingcharacteristics稳定调速率steadystate speedgoverningrate气缸体和气缸盖cylinderblockandhead气缸体cylinderblock整体铸造cast inblock（castenblock)发动机罩engine bonnet气缸体加强筋engineblockstiffeningrib气缸cylinder
右转 right-hand rotation 外径 major diameter 中径 pitch diameter 内径 minor diameter 径向间隙 radial clearance 发动机性能 engine performance 加载性能 loading performance 起动性能 starting performance 加速性能 acceleration performance 动力性能 power performance 排放性能 emission performance 空转特性 no load characteristics 负荷特性 part throttle characteristics 调速特性 governor control characteristics 万有特性 mapping characteristics 稳定调速率 steady state speed governing rate 气缸体和气缸盖 cylinder block and head 气缸体 cylinder block 整体铸造 cast inblock (cast enblock) 发动机罩 engine bonnet 气缸体加强筋 engine block stiffening rib 气缸 cylinder
（转子机）缸体stator缸径cylinder bore气缸体机架cylinderblockframe气缸盖cylinderhead配气机构箱valve mechanismcasing气缸体隔片cylinder spacer气缸盖密封环cylinder head ringgasket气缸盖垫片cylinderheadgasket气缸套cylinderliner(cylindersleeve千式缸套drycylinderliner湿式缸套wetcylinderliner气缸水套waterjacket膨胀塞 expansion plug防冻塞freezeplug气缸壁cylinderwall环脊ringridge排气口exhaustport中间隔板 intermediatebottum导板guideway创成半径（转子机）generatingradius缸体宽度（转子机）operatingwidth机柱 column
（转子机）缸体 stator 缸径 cylinder bore 气缸体机架 cylinder block frame 气缸盖 cylinder head 配气机构箱 valve mechanism casing 气缸体隔片 cylinder spacer 气缸盖密封环 cylinder head ring gasket 气缸盖垫片 cylinder head gasket 气缸套 cylinder liner(cylinder sleeve) 干式缸套 dry cylinder liner 湿式缸套 wet cylinder liner 气缸水套 water jacket 膨胀塞 expansion plug 防冻塞 freeze plug 气缸壁 cylinder wall 环脊 ring ridge 排气口 exhaust port 中间隔板 intermediate bottum 导板 guideway 创成半径（转子机） generating radius 缸体宽度（转子机） operating width 机柱 column