本文介绍了节流式流量测量系统外接管长度对汽油机充量系数和扭矩特性的影响。

This paper introduces the effect of connecting pipe length of the flow measurement system on volumetric efficiency and torque characteristic of gasoline engines.

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试验结果表明，该系统在不影响进气充量系数的情况下，对柴油机有害气体排放量影响显著。

The test results show that, without obvious increase of volumetric efficiency, this system is able to make obvious change to the exhaust gas emission of diesel engine.

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充量系数是表征换气过程进行完善程度的一个极为重要的参数，是衡量发动机性能的重要指标。

Volumetric efficiency is a very important parameter to test whether the engine has a good process of air exchange, its also an important guide line to scale the engine performance.

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It turns out that this quantity here, which is called eta of J the Joule free expansion parameter, is not quite zero.

这个量后来被，称作焦耳膨胀系数,其实并不等于零。

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Do you realize that this is a pair of simultaneous equations in which you can solve for these two unknowns, if you like, in terms of these two knowns and these coefficients, which are like these numbers, 3, 2, 4, and 6?

你们是否发现这其实就是一个方程组,你可以用它来解出这两个未知量,你愿意的话,可以用这两个已知量,和这些系数,比如这些数字,3,2,4和6

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Therefore, it'll compress by an unknown x, which is equal to mg divided by the force constant of the spring.

因此它的压缩量为 x,也就等于 mg 除以弹簧的弹性系数

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