13. The fourstrokes in the four-stroke-cycle engine, in their proper order, are intake, compression, power, and exhaust.
四冲程循环发动机中，四个冲程的固定顺序是：进气、压缩、作功和排气。
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14. What is the difference between a two-stroke and a four-stroke engine? Most chain saws and boat motors use two-stroke engines.
二冲程和四冲程发动机的区别：大多数链锯和摩托艇使用的是二冲程发动机。
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15. This paper introduces the idling matching test about MCEFI motorcycle electronic fuel injection system for four-stroke engines.
本文介绍了自行研发的四冲程摩托车汽油机用MCEFI电喷系统在发动机怠速工况的匹配研究。
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16. Based on the working principle of the four-stroke engine, we model the four-cylinder gasoline engine using bond graph technique.
基于四冲程发动机的工作原理，用键合图对一四缸汽油机进行了建模。
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17. Hydrocarbon emission and fuel consumption are decreased to some extent, but the values are still high comparing to four-stroke engine.
碳氢排放和油耗有所降低，但仍高出四冲程发动机很多。
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18. This paper deals with such a question but confining to the case of four-stroke engine turbocharged under the constant pressure principle.
本文旨在对定压式纯废气透平增压四冲程柴油机的变工况计算提出一种新的列线图解法。
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19. Based on "two-microphone" method, a sound intensity measurement was carried out towards a vehicle four-stroke gasoline engine in a semi-anechoic room.
运用声强测试技术的双传声器法原理，对一台车用汽油发动机在半消声室内进行了声强测量。
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20. Gas turbine engines use the Brayton cycle. Wankel rotary engines use the Otto cycle, but they do it in a very different way than four-stroke piston engines.
转子活塞发动机用的是四冲程循环，但是它们和四冲程活塞发动机有很大不同。
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21. This paper introduces the design of valves of four-stroke motorcycle engines and relating problems on material selection and their influences on engine performances.
本文介绍了四冲程摩托车发动机气门设计和选用材料的有关问题，及对发动机性能的影响。
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22. The operating principle of internal-combustion engine mode is similar to the four-stroke internal combustion engine, so it will inevitably produce harmful emissions.
内燃机模式的工作原理与普通四冲程内燃机相同，因此不可避免的也会产生有害排放物。
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23. Otto built the practical four-stroke internal combustion engine called the "Otto Cycle Engine, " and as soon as he had completed his engine, he built it into a motorcycle.
24. In this paper, the mathematical model of in-cylinder working process is deduced according to in-cylinder working characteristic of four-stroke direct injection diesel engine.
本文根据直喷式四冲程柴油机缸内工作过程特点推导出描述柴油机缸内工作过程的数学模型。
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25. Four-stroke engines of this type with this same type of intake valve motion but with a supercharger to make up for the loss of power density are known as Miller cycle engines.
26. In response to increasingly stringent emissions legislation, the number of four-stroke motorcycle is more and more, so it is necessary to develop the special four-stroke motorcycle engine oil.
随着我国环保法规的日益严格，四冲程摩托车数量越来越多，开发专门的四冲程摩托车油非常必要。
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27. While a modified Otto cycle engine using the "Atkinson cycle" provides good fuel economy, it is at the expense of a lower power-per-displacement as compared to a traditional four-stroke engine.
28. While a modified Otto cycle engine using the "Atkinson cycle" provides good fuel economy, it is at the expense of a lower power-per-displacement as compared to a traditional four-stroke engine.
