A mathematical model which includes engine cycle simulation and dynamic calculation is developed for computation of excitation harmonics.

建立了包括内燃机气缸内工作过程数值计算和动力学计算在内计算激励谐值的数学模型。

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In order to approach the carnot efficiency the processes involved in the heat engine cycle must be reversible and involve no change in entropy.

为了接近卡诺效率，所涉及的过程，在热机循环必须可逆且涉及没有改变熵。

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Reasons for the decline in power performance of LPGV engine under driving cycle of city are analyzed using engine cycle theory under steady-state condition.

从稳定工况下的发动机循环理论出发，分析了城市工况下LPGV车用发动机动力性能下降的原因。

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Now what I want to do is put up a specific example of the cycle that can be undertaken inside here in an engine, and we can just calculate from what you've already seen of thermodynamics.

现在我想做的是,举一个例子,来具体说明热机内部的循环过程，同时我们可以利用热力学定律进行计算,看看热力学参量发生了什么变化。

麻省理工公开课 - 热力学与动力学课程节选

It expands. You change your constraints on your system, you heat it up some more, then you take the heat source away, and you put it back in contact with the atmosphere. And you cool it a little bit, change the constraints, cool it a little bit more, and heat, and you've got a closed cycle engine.

让它与大气接触冷却,改变约束，使它继续冷却，然后又再次加热,这就是循环热机，我们以前也研究过，更复杂的机器。

麻省理工公开课 - 热力学与动力学课程节选

So the way I've got things written here, q1 Heat's flowing from the hot reservoir to the engine that runs in a cycle.

我把这些都这些这里，是正的，q1，is，positive,热从高温的热源,传到循环工作的热机，对外做功。

麻省理工公开课 - 热力学与动力学课程节选

For years he had contemplated the inefficiencies of the traditional four-stroke Otto cycle engine (named for its 1876 developer, Nikolaus A. Otto).

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Scuderi says its split-cycle engine increases overall efficiency by up to 50 percent and cuts down on NOx gases at the same time by changing the way air gets channeled through an engine.

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It combines a 2-liter DOHC 16V Duratec (Atkinson cycle) engine and CVT with an AC synchronous motor powered by a 7.6kWh Lithium Ion battery.

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