专业英语2-internal combustion engine

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1、专业英语2-internalcombustionengine2.1principleofoperationpiston活塞connectingrod连杆crankshaft曲轴powerstroke做功行程expel排出valve气阀inlet(intake)valve进气阀exhaustvalve排气阀term术语TDCtopdeadcenter上止点BDCbottomdeadcenter下止点bore缸径sweptvolume有效容积enginecapacity发动机排量clearancevolume余隙容积，燃烧窒容积co

2、mpressionratio压缩比revolution旋转，转数everyother每隔一个cycle循环spreadover分布，遍及intakestroke进气行程compressionstroke压缩行程knock敲缸，敲打exhauststroke排气行程engineblock发动机缸体lubrication润滑2.2engineblockandcylinderheadcylinderhead气缸盖fasten使固定waterjacket水套oilgallery油道camshaft凸轮轴overhead-cam(OHC)

3、顶置凸轮grayiron灰铸铁alloy合金nickel镍chromium铬casting铸件headcover气缸盖罩intakemainfold进气总管oilpan油底壳aluminum铝belinedwith镶有cylindersleeve气缸套pistonring活塞环rebore重镗，镗修flush齐平的seedup增加hemi半球形wedge楔形，楔入semi-hemi准半球形rocker摇臂push-rod推杆gasket衬垫high-tensile高强度的stud螺栓gas-tight密封的asbestos石棉c

4、rankcase曲轴箱，曲柄箱encase封闭，把包起来drainoff排出，流出2.3piston,connectingrodandcrankshaftcomprise由组成，包含inertia惯性，惯量sideforce侧向力subdivideinto再分，细分tangentialforce切向力radius半径，范围radialforce径向力，法向力circular圆形的steelband钢圈fitinto放入，装进groove凹槽pistonpin活塞销pinboss活塞销凸台withstand抵抗hollow空的br

5、unt冲力crown活塞顶skirt裙部ringland环带concave凹的，凹入的dome圆顶recessed隐蔽的cylinderwall气缸壁cylinderbore缸筒splash飞溅chrome-faced表面镀铬的untwist朝相反方向手挤开/朝气缸壁方向挤开inplace在适当的位置chrome-plated镀铬的forge铸造，伪造crankpin曲柄销，曲柄针bush衬套，铀瓦，套筒bronze青铜crankshaftjournal曲柄轴颈steel-backed钢背的lead铅tin锡split切口，中断

6、，分配，分离inconjunctionwith连同，和一起reciprocatingmotion往复运动rotary旋转的carbonsteel碳钢journal轴颈alignwith匹配overlap重叠timinggear正时齿轮throw摆幅viceversa反之亦然impulse脉冲spaceout隔开，分隔throughout遍及diagram图表firingorder点火次序N.B.注意，留心companion成对circumference圆周balancer平衡器，稳定器，均压器damper阻尼器，减振器，缓冲器d

7、ampen阻尼，减振，缓冲pulsation振动，跳动elastomer人造橡胶，弹性体bonding连接，结合letgo放开，松手2.4engineandtransmissionmountingsmounting悬置，装置，装备inherent固有的，内在的，与生俱来的originate引起horizontal水平的fluctuate波动，变动torsional扭转的，扭力的oscilation摆动，振动constraint约束，强制amplitude振幅impart给予，传给rebound回弹shear转向horizonta

8、llongitudinal水平纵向的，Y轴horizontallateral水平横向的，X轴vertical垂直的，Z轴roll绕纵轴转动pitch绕侧轴转动yaw绕垂直轴转动2.5valvesystemcoodinate协调valvetrain气阀传动resp