[转帖]汽车专业英语——Engine Terms（发动机术语

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汽车专业英语——Engine Terms（发动机术语）

:cool: Engine Terms（发动机术语） TDC(top dead center) ― the position of the crank and piston when the piston is farther away from the crankshaft. TDC (上止点) - 当活塞离曲轴最远时，曲柄和活塞的位置。 BDC (bottom dead center) ― the position of the crank and piston when the piston is nearest to the crankshaft. 3 x1 Q- T! k6 p5 ~5 R: j+ g GBDC (下止点) - 当活塞离曲轴最近时，曲柄和活塞的位置。 # f4 s/ j( O7 D" ^. ^9 Y' C: N7 Wstroke ― the distance between BDC and TDC; stroke is controlled by the crankshaft. 行程 - 下止点和上止点之间的距离；行程由曲轴控制。 bore ― the internal diameter of the cylinder. 缸径 - 汽缸的内径。 # w% V( g8 N2 b) _' ?2 [% ^swept volume ― the volume between TDC and BDC. 有效容积 - 上止点和下止点之间的体积。 / P- m4 L' N' E7 d/ c6 fengine capacity ― this is the swept volume of all the cylinders, e.g. a four-cylinder engine having a capacity of two liters (2000 cm3) % y! l& k1 \7 ~5 C' f% |has a cylinder swept volume of 500 cm3. " F# m: F& P% A4 f& Q% o; j5 u发动机排量 - 这是全部汽缸的有效容积，例如一台排量为两公升(2000 cm3)的4个汽缸的发动机每一个汽缸的有效容积为500 cm3。 6 q; Y# \5 y( hclearance volume ― the volume of the space above the piston when it is at TDC. 间隙容积 – 当活塞位于上止点时，活塞顶上面的气缸空间。 compression ratio = (swept vol + clearance vol)/(clearance vol) 压缩比 = ( 有效容积 + 间隙容积 ) / ( 间隙容积 ) 5 [5 |3 Q! a6 a3 t0 T6 Wtwo-stroke ― a power stroke every revolution of the crank. 2 m; q K! P/ o二冲程 – 曲柄旋转一圈作功一次。 0 Y; B6 `& R( }2 @four-stroke ― a power stroke every other revolution of the crank. @) G, f& h& q6 o1 s6 b0 H四冲程 - 曲柄旋转两圈作功一次。