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.

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。

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A new working mode of directly using the reciprocating motion of piston for outputting liquid power was put forward.

提出了一种直接利用内燃机活塞的直线往复运动实现流体压力能输出的新工作模式。

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When the cylinder moves forward, the piston, the piston is driven to travel forward and extrude the material.

当气缸向前运动时，推动活塞向前，挤压物料。

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