Air and fuel are drawn into the cylinder by the downward movement of the piston, the piston then moves up and squeezes this mixture which is then ignited.
空气和燃料，是由各该活塞向下运动，活塞然后移动起来，这是挤出，然后点燃混合气进入气缸。
However, in a compressed air engine, no additional energy is gained if the air in the cylinder is compressed on the upward stroke of the piston.
然而，在压缩空气引擎，不需要额外的能源是涨，如果空气中的气缸压缩的向上中风活塞。
This kind of air compressor cylinder basically does not include any oil content in, the piston ring and packing is commonly ptfe.
这种空压机气缸中基本上不含油，其活塞环和填料一般为聚四氟乙烯。
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