当首循环混合气浓度过浓或者是过稀时，瞬态hc排放迅速增加。
The HC emissions are increased remarkably when the mixture concentration becomes too lean or too rich.
试验结果表明：LPG发动机成功起动所需的混合气浓度比汽油发动机的稀。
The results showed that the fuel-air mixture suitable for the LPG engine start is leaner than that of the gasoline engine.
模拟计算表明，利用早喷可以形成稀薄准均质混合气；燃烧室形状影响混合气浓度场和温度场。
The results show that the lean quasi-homogeneous mixtures can be formed by early-injection, and the shape of combustion chamber has an obvious effect on density and temperature fields of mixture.
利用该燃烧模型进一步研究柴油机的燃烧和碳烟生成中的一些问题：如点火延迟时间与混合气浓度的关系，排气中的碳烟浓度与混合气油气当量比的关系。
Using a combustion model some problems such as: the relationship between ignition delay and fuel concentration, the relationship between soot concentration and the equivalent ratio of mixt...
研究结果表明：氧浓度解耦控制技术是循环式氦氧混合气辅助呼吸装置设计中的一项关键技术。
Results it shows that the control of oxygen concentration after unchaining coupling is a vital technology in assistant breathing equipment cycled with mixed gases of helium and oxygen.
除考虑温度对混合气比热的影响外，还考虑了由于浓度差异产生的扩散流动对混合气比热的影响，从而使理论模型进一步精确化。
Besides the influence of temperature on specific heat of mixture, considered is also that of diffusion flow due to concentration discrepancies, thus making the theoretical model more exact.
混合气的浓度比例可以改变，以适应发动机的运行状况。汽车在启动、加速和高速行驶时，需要含燃油浓度较高的混合气；
The mixture must be of varying degrees of richness to suit engine operating conditions. It must be rich (have a higher percentage of fuel) for starting, acceleration, and high-speed operation.
适当浓度可燃混合气是由燃料系统和化油器提供的。
The engine requires a fuel system to supply it with a mixture of air and fuel.
适当浓度可燃混合气是由燃料系统和化油器提供的。
The engine requires a fuel system to supply it with a mixture of air and fuel.
应用推荐