適應性係數 adaptive coefficient
扭矩適應性係數 coefficient of torque adaptibility
轉速適應性係數 speed adaptive coefficient
強化係數 coefficient of intensification
校正係數 correction factor
換算係數 conversion factor
活塞平均速度 mean piston speed
發動機轉速 engine speed (rotational frequency)
怠速轉速 idling speed
經濟轉速 economic speed
起動轉速 starting speed
最低穩定工作轉速 lowest continuous speed with load
最大扭矩轉速 speed at maximum torque
最高空轉轉速 maximum no load governed speed
調速 speed governing
超速 overspeed
怠速 idling
轉速波動率 speed fluctuation rate
工況 working condition (operating mode)
額定工況 declared working condition
變工況 variable working condition
穩定工況 steady working condition
空載 no-load
全負荷 full load
超負荷 overload
部分負荷 part load
充量（進氣） charge
鏇轉方向 direction of rotation
順時針 clockwise
逆時針 counter-clockwise
左轉 left-hand rotation
右轉 right-hand rotation
外徑 major diameter
中徑 pitch diameter
內徑 minor diameter
徑向間隙 radial clearance
發動機性能 engine performance
載入性能 loading performance
起動性能 starting performance
加速性能 acceleration performance
動力性能 power performance
排放性能 emission performance
空轉特性 no load characteristics
負荷特性 part throttle characteristics
調速特性 governor control characteristics
萬有特性 mapping characteristics
穩定調速率 steady state speed governing rate
氣缸體和氣缸蓋 cylinder block and head
氣缸體 cylinder block
整體鑄造 cast inblock (cast enblock)
發動機罩 engine bonnet
氣缸體加強筋 engine block stiffening rib
氣缸 cylinder
（轉子機）缸體 stator
缸徑 cylinder bore
氣缸體機架 cylinder block frame
氣缸蓋 cylinder head
配氣機構箱 valve mechanism casing
氣缸體隔片 cylinder spacer
氣缸蓋密封環 cylinder head ring gasket
氣缸蓋墊片 cylinder head gasket
氣缸套 cylinder liner (cylinder sleeve)
乾式缸套 dry cylinder liner
濕式缸套 wet cylinder liner
氣缸水套 water jacket
膨脹塞 expansion plug
防凍塞 freeze plug
氣缸壁 cylinder wall
環脊 ring ridge
排氣口 exhaust port
中間隔板 intermediate bottum
導板 guideway
創成半徑（轉子機） generating radius
缸體寬度（轉子機） operating width
機柱 column
燃燒室 combustion chamber
主燃燒室 main combustion chamber
副燃燒室 subsidiary combustion chamber
預燃室 prechamber
渦流燃燒室` swirl combustion chamber
分開式燃燒室 divided combustion chamber
渦流式燃燒室 turbulence combustion chamber
半球形燃燒室 hemispherical combustion chamber
浴盆形燃燒室 bathtub section combustion chamber l
形燃燒室 l-combustion chamber
楔形燃燒室 wedge-section combustion chamber
開式燃燒室 open combustion chamber
封閉噴射室 closed spray chamber
活塞頂內燃燒室 piston chamber
爆發室 explosion chamber
燃燒室容積比 volume ratio of combustion cahmber
燃燒室口徑比 surface-volume ratio of combustion chamber
通道面積比 area ratio of combustion chamber passage
曲軸箱通氣口 crankcase breather
凸輪軸軸承座 camshaft bearing bush seat
定時齒輪室罩 camshaft drive (gear) cover
曲軸箱檢查孔蓋 crankcase door
曲軸箱防爆門 crankcase explosion proof door
主軸承蓋 main bearing cap
氣缸蓋罩 valve mechanism cover
飛輪殼 flywheel cover
掃氣儲器 scavenging air receiver
活塞 piston
裙部開槽活塞 split skirt piston u
形槽活塞 u-slot piston
滾花修復活塞 knurled piston
圓頂活塞 dome head piston
平頂活塞 flat head piston
凸頂活塞 crown head piston (convex head piston)
凹頂活塞 concave head piston
階梯頂活塞 step-head piston
筒形活塞 trunk piston
橢圓形活塞 oval piston
抗熱變形活塞 autothermic piston
不變間隙活塞 constant clearance piston
鑲因瓦鋼片活塞 invar strut piston
直接冷卻式活塞 direct-cooled piston
間接冷卻式活塞 indirect cooled piston
滑裙活塞 slipper piston
活塞速度 piston speed
活塞頂部 piston head
活塞裙部 piston skirt
整體活塞裙 solid skirt
活塞裙擴大襯簧 piston skirt expander
滑履式活塞裙 slipper skirt
隔熱槽 heat dam
活塞標記 piston mark
活塞銷 piston pin
活塞銷孔 piston pin boss
活塞銷襯套 piston pin bushing
全浮式活塞銷 full-floating piston pin
半浮式活塞銷 semifloating piston pin
固定螺釘式活塞銷 set screw piston pin
活塞環 piston ring
組合式活塞環 compound piston ring
同心活塞環 concentric piston ring
偏心活塞環 eccentric piston ring
自由環 free ring
閉合環 closed ring
梯形環 keystone ring
半梯形環 half keystone ring
矩形環 rectangular ring
油環 oil control ring
開槽油環 slotted oil control ring
螺鏇彈簧載入雙坡口油環 coil spring loaded slotted oil control ring