发动机曲柄箱 base chamber
发动机曲柄角度传感器 engine crank angle sensor
发动机曲柄连杆机构 engine crank and rod mechanism
在分析摩托车发动机曲柄连杆机构不平衡力的基础上，结合国内和国外的实践，总结了摩托车单缸发动机的基本平衡方法。
Based on analyzing the unbalanced force of crank-connecting rod mechanism, this paper describes the balance of motorcycle single-cylinder engine according to practices home and abroad.
尽管你可能够逃脱为当转动发动机曲柄时产生的摇动而楔入断裂的木棒，由此可顺利地拆下曲轴皮带轮螺栓，也许你知道这不是最好的做法。
While you may be able to get away with wedging your breaker bar against the cradle and cranking the engine over to remove the crank pulley bolt, you know it's not the best practice.
要启动发动机，首先得点燃热管，再转动曲柄轴，发动机便启动，这些准备工作只需一分钟。
To start the engine, one must first light the small flame beneath the hot ignition tube and crank the engine once using the crank; these preparations take only a minute.
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