而优化设计的排气管和改进的计时器和活塞也有助于提高效率。
A better design for the exhaust pipes adds to the efficiency, along with modified timing and pistons.
发动机完整的循环要求有活塞的四个冲程：进气、压缩、做功、排气。
The complete cycle of an engine requires four piston strokes: intake, compression power, and exhaust.
当活塞上行压缩气缸中的混合气体，火花塞点燃气体燃烧，通过气缸上另一个孔排气。
As the piston moves up it is compressed, the spark plug ignites combustion, and exhaust exits through another hole in the cylinder.
这并不意味着活塞将以两倍于正常速度上下运动，因为浪费的火花出现在排气行程中，和没有任何压缩。
This does not mean that the plugs will wear at twice the normal rate, as the wasted spark is on the exhaust stroke, and is therefore under no compression.
液压升降机中使用的液压油缸，其组成部分通常有五部分：活塞和活塞杆、缸筒和缸盖、缓冲装置、密封装置、排气装置。
The use of hydraulic cylinder in hydraulic elevator, the part usually has five parts: piston and piston rod, cylinder and cylinder head, buffer device, sealing device and exhaust device.
由于进气门关闭、排气门也已关闭，现在活塞上部的空间被密封了。
The space above the piston is now sealed due to the inlet valve closing and the exhaust valve having already closed.
膨胀机为进气有阀、排气无阀的短活塞型。
The expansion engine which has a inlet valve without exhaust valve, is a short piston engine.
当活塞再一次到达下止点时，排气门打开。
当活塞再一次到达下止点时，排气门打开。
在作功行程，进气门和排气门关闭，火花塞点燃混合气，活塞向下移动。
On the power stroke, the intake valve and exhaust valve close. The spark plug ignites the air-fuel mixture, the piston moves down.
活塞的上行通过排气门将废气排出汽缸外。
As the piston travels upward, it pushes the spent gases out through the open exhaust valve.
进气行程，活塞下行；压缩行程，活塞上行；做功行程，活塞下行；排气行程，活塞上行。
The piston travels down on the intake stroke, up on the compression stroke, down on the power stroke and up on the exhaust stroke.
在压缩行程，活塞向上运动，进气门和排气门关闭，活塞压缩混合气。
On the compression stroke, the piston moves up. The intake valve and exhaust valve close. The piston compresses the air-fuel mixture.
针对某活塞式发动机排气管断裂现象，从断裂处焊接结构缺陷、焊缝组织缺陷和零件工作环境等方面进行分析。
The fracture failure of the piston engine exhaust pipe was analyzed from welding structure defects, welding structure defects and working environment etc.
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.
排气冲程随着活塞经过下止点并上行至上止点。
The exhaust stroke continues as the piston passes BDC and moves upward to past TDC.
认为余隙间隙对活塞式压缩机排气量的影响最大，并介绍了余隙间隙的测量及调整方法。
This article believes that clearance space has the most important effect upon the ventilation of the piston compressor, and introduces the method of measuring and adjusting the clearance space.
在减速时，油里面悬浮的颗粒排出排气筒，而不是积聚在活塞和环之间的沟槽内，这可以使环磨损减缓。
During deceleration, the particles suspended in the oil blow out the exhaust, rather than accumulating in the ring grooves between the piston and rings. This keeps the rings from wearing too much.
活塞顶部的形状使进入气缸的可燃混合气向上运动，这样有助于扫气，引导燃烧过的废气向上运动并从排气口排出。
The top of the piston is shaped to give the incoming mixture an upward movement. This helps to sweep the Burned gases ahead and out through the exhaust port.
该空压机在运行时活塞始终在旋转，且运行一周，自动完成进、排气两个压力循环，无须进、排气阀门等配气机构。
When it works, the piston rotates all the time, and runs a circle to automatically complete two pressure circulations of charging and exhausting without air distributing mechanism.
公司专业生产活塞式、螺杆式系列空压机、交流系列电焊机、工业排气扇、电动机、型材切割机、空气净化器等系列产品。
We specialized in producing series of piston and screw air compressors, The AC welders, ventilating fans, electric motors, cutting machines, and purify machines etc.
DT1通电，DT2断电，C气口通气A、D气口排气、压缩空气将油压到油缸内推动活塞杆前移，实现预压出力状态如下图2；
The power DT1, DT2 power, C port A, D port and exhaust ventilation, compressed air to push the piston rod oil cylinder forward, realize the preloading force state in figure 2;
进气冲程在活塞位与气缸顶部（进气门开启，排气门关闭）时开始，在活塞到达其行程的底部时结束。
The intake stroke starts with the pistonat the top of the cylinder (intake valve open and exhaust valve closed) and stops with the pistonat the bottom of its travel.
一种内置式磁力换向自动往复汽缸，包括汽缸体（3）、活塞（5）、进气管（1）、和排气管（2）；
The utility model relates to a built-in type magnetic reversing automatic reciprocating cylinder which comprises a cylinder body (3), a piston (5), an air inlet pipe (1) and an exhaust pipe (2);
详细分析了活塞式压缩机顶开吸气阀排气量调节技术，并对新近研究工作做了介绍。
Air regulating for reciprocating compressor with pressing off inlet valve was analysed particularly and the late research on such a system was introduced.
详细分析了活塞式压缩机顶开吸气阀排气量调节技术，并对新近研究工作做了介绍。
Air regulating for reciprocating compressor with pressing off inlet valve was analysed particularly and the late research on such a system was introduced.
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