最后一步是将蒸汽引入气缸，使得活塞前后推动，从而提高了发动机的速度，降低了燃料消耗。
The final step came when steam was introduced into the cylinder to drive the piston backward as well as forward, thereby increasing the speed of the engine and cutting its fuel consumption.
以前面的例子来说，在气缸活塞和汽化器到位前，将发动机装配到摩托车架是没有意义的。
Using the example from earlier, it does not make sense to mount the engine of the bike to the frame of the bike before the pistons and carburettor are in place yet.
对于这一点，波尔玛也赞同，并且指出，用于常规轻型飞机的活塞式发动机行不通还有其他原因：要是有水渗入气缸内，它就不能工作了。
Polmar agrees, and points out that the piston engines used in conventional light planes are ruled out for other reasons: they would fail if any water leaked into the cylinders.
在二冲程发动机中你必须混和燃料和气体，因为气缸壁上的孔阻止使用活塞环密封燃烧室。
You have to mix oil into the gas in a two-stroke engine because the holes in the cylinder wall prevent the use of rings to seal the combustion chamber.
活塞是一个中空的圆柱体形状部件，其在发动机气缸里做上下往复运动。
The piston is a cylindrical shaped hollow part that moves up and down inside the engine cylinder.
对置式的发动机的每隔气缸中都有两个活塞沿相反方向运动。
An opposed-piston engine has cylinders in each of which two pistons travel in opposite directions.
介绍了三角活塞旋转发动机的工作原理，提出了气缸型线的创成方法和计算公式。
This paper introduces the operating principles of the triangle piston circulating engine and puts forward the methods to create model line of cylinder and calculating formula.
在二行程发动机中，活塞起到阀门的作用，当活塞接近下止点时，使气缸壁上的进排气口打开。
In the two-cycle engine, the piston ACTS as a valve, clearing valve ports in the cylinder wall as it nears BDC.
残留在气缸壁上的砂砾或尘埃所造成的划痕，均能引起活塞环和气缸壁的迅速磨损以及发动机的早期损坏。收藏。
Even slight traces of grit or dust left on the cylinder walls may cause rapid ring and wall wear and early engine failure.
在这样的情况下，要使发动机保持良好的工作状态，只有整修气缸表面，并配装新的活塞和活塞环。
In such a case, the only way to get the engine Back into good operation condition is to refinish the cylinders and fit new pistons and new rings to them.
整修气缸需要12～20小时（时间长短取决于发动机的类型），这包括调配和安装新活塞、活塞环、活塞销和连杆。
Refinishing cylinders requires 12 to 20 hours (according to the type of engine). This includes fitting and installing new pistons, rings, piston pins, and connection rods.
包括气门顶开器、气门杆、活塞环、气缸壁在内的发动机元件受严格的生锈条件所影响，尤其在冬季停停走走驾驶档。
Engine components including valve lifters, valve stems, rings, cylinder wall, etc., are subjected to server rust-promoting conditions. Particularly in winter stop-and-go driving.
包括气门顶开器、气门杆、活塞环、气缸壁在内的发动机元件受严格的生锈条件所影响，尤其在冬季停停走走驾驶档。
Engine components including valve lifters, valve stems, rings, cylinder wall, etc., are subjected to server rust-promoting conditions. Particularly in winter stop-and-go driving.
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