V2EX tdc

TDC

释义 Definition

TDC 是缩写,最常见指 Top Dead Center(上止点):在往复式发动机中,活塞在气缸内到达最高位置的时刻/位置,常用于点火正时、配气正时与发动机维修校准。(在不同领域里 TDC 也可能有其他含义。)

发音 Pronunciation

/ti di si/

例句 Examples

Set the piston at TDC.
把活塞调到上止点(TDC)。

Before installing the timing belt, rotate the crankshaft until cylinder one is at TDC on the compression stroke to ensure the cam timing marks align correctly.
在安装正时皮带之前,转动曲轴,使一号气缸处于压缩冲程的上止点(TDC),以确保凸轮轴正时标记正确对齐。

词源 Etymology

TDC 来自机械/汽车工程术语 Top Dead Center 的首字母缩写。这里的 dead center 指曲柄连杆机构在极限位置附近“力学上难以继续推动”的点位;top 表示活塞位于上方极限位置。

相关词 Related Words

文学与作品 Literary Works

  • Bosch Automotive Handbook(《博世汽车工程手册》)
  • Haynes Repair Manual(《海恩斯汽车维修手册》系列)
  • Clymer Motorcycle Repair Manual(《克莱默摩托车维修手册》系列)
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