They use a piston engine instead.
他们改用活塞发动机。
A piston engine is said at best to be only 33% efficient.
一台活塞式发动机被充其量说只成为有效率33%。
Vibration characteristics; Micro free swing piston engine; ADAMS;
微型摆式内燃机；振动特性；ADAMS；
Next, in view of swings the piston engine overall structure to carry on the design.
其次，针对摆动活塞式发动机的总体结构进行设计。
The aircraft is powered by a 360hp air-cooled, four-stroke, petrol (gasoline) piston engine.
飞机由一台360马力风冷、四冲程汽油活塞发动机提供动力。
The expansion engine which has a inlet valve without exhaust valve, is a short piston engine.
膨胀机为进气有阀、排气无阀的短活塞型。
The powerplant of propeller aircraft is composed of two main parts, piston engine and propeller.
小型螺旋桨飞机的动力装置一般由活塞式发动机和螺旋桨两个主要部分组成。
My earliest memories are of pointing to the sky, having detected the far-off drone of a piston engine.
我能回忆起的最早的事情就是指着天空，耳边传来远处的活塞引擎的轰鸣声。
An opposed-piston engine has cylinders in each of which two pistons travel in opposite directions.
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。
The objective of the study is to analyze one particular engine, the dual hydraulic free piston engine-DHFPE.
双活塞式液压自由活塞发动机是将内燃机与液压泵集成为一体的新型动力机械。
The hydrostatic piston engine comprises a housing in which a cylinder drum is arranged in a rotatable manner.
该流体静力学活塞机构包括其中 可旋转地设置有汽缸鼓轮的壳体。
The study object of this paper is a new kind of power setting called ElectricPower Confined Piston Engine(ECPE).
本文的研究对象是一种新型的动力装置——电力约束活塞发动机。
The invention discloses a rotary piston engine, pertaining to the technical field of internal combustion engines.
本发明公开了一种旋转活塞发动机，属于内燃机技术领域。
The counterweight of an aerial piston engine made in American is object of repair technology research in this paper.
以进口某型航空活塞发动机曲轴配重为对象，对其曲轴配重修理进行研究。
The effect of elastic coupling on wobble plate piston engine shafting vibration in the underwater craft was discussed principally.
本文主要讨论在某水下航行装置中，弹性联轴节对摆盘式活塞发动机轴系振动的影响。
At present, the turbo technology of small aviation piston engine has been mature abroad, but domestic are committed to the research.
目前，国外小型航空活塞式发动机涡轮增压技术已经比较成熟，国内正在致力于这方面的研究。
The present invention is the combination of the principles of a reciprocating piston engine and a revolving cylinder type compressor.
本发明是往复式活塞机与转缸式压缩机原理的结合。
To study the starting performance of hydraulic free piston engine (HFPE), the typical starting phases of HFPE were investigated through experiments.
为研究液压自由活塞发动机(HFPE)的起动性能，对HFPE样机的典型起动方式进行了实验研究。
The plane uses a piston engine rather than a large-scale turbine jets, allowing it to travel unaffected through the ash, unlike large commercial jets.
该飞机使用活塞式发动机，而不是身材庞大的喷气涡轮机，因此它不会像大型商业飞机那样受到火山灰的负面影响。
This paper analyzed the structural theory and the mechanical model of hydraulic piston engine, and briefly introduced the optimization theory of ANSYS.
本文分析了液压约束活塞发动机的结构原理和力学模型，简要介绍了ANSYS的尺寸优化理论。
The fracture failure of the piston engine exhaust pipe was analyzed from welding structure defects, welding structure defects and working environment etc.
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 result of the study provided important reference to the design and improvement of CAM piston engine, and effective method and experience for new production.
本文的研究结果为凸轮活塞发动机的设计和改进提供了重要的参考依据，也为新产品的开发提供了有效的方法与经验。
The torsional vibration absorbers of reciprocating piston engine crankshafts are the earliest and most commonly used kind of damped dynamic vibration absorbers.
往复活塞式发动机曲轴扭振吸振器是应用得最早且最普通的一类阻尼式动力吸振器。
The working principle and structure of 3-cylinder hydraulic confined piston engine (HCPE) is put forward, and the working process differential equations is constructed.
阐述了三缸机械液压约束活塞发动机(HCPE)工作原理，建立了系统工作过程的微分方程。
The result shows that the traditional estimation methods about powerplant performance are adapted for propeller aircraft even if with small sized piston engine and propeller.
研究结果表明，传统的估算方法对于装小型活塞式发动机的螺旋桨飞机也是适用的。
This paper introduced the construction and working principle of Single-cylinder Electric Power Confined Piston Engine, and studied the No-load characteristic on theory and experiment.
本文介绍了单缸电力约束活塞发动机的结构及工作机理，并对其空载特性进行了理论和试验研究。
Using the design method, a prototype design and experimental verification on the validity of the method are made. The methods can also be applied to other forms of free piston engine designs.
利用该设计方法完成了原理样机设计，并试验验证了该方法的正确性，同时该方法也可以推广应用到其他形式的自由活塞发动机设计当中。
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。
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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