排气系统可以降低从发动机气缸排出的已燃废弃的噪声，并且安全地将这些废气带走使其远离汽车内的人。
The exhaust system reduces the noise of the burned gases leaving the engine cylinders and carries these exhaust gases safely away from the people in the car.
催化转换器提供一种处理废气的方法。催化转换器位于排气系统中，在发动机和消声器之间。
Catalytic converters provide the method of treating exhaust gases. Catalytic converters are located in the exhaust system, between the engine and the muffler.
如阀门打开或关闭的时间不对或根本打不开或关不住，空气无法进入，废气无法排出，因此发动机不运转。
If the valves do not open and close at the right time or at all, air cannot get in and exhaust cannot get out, so the engine cannot run.
最终的结果是提高燃料的效率高达70-80％，以及发动机和烟雾清洁无废气。
The end result is an increased fuel efficiency of up to 70-80% as well as a cleaner engine and smog-free exhaust.
在汽油机的燃烧过程中加入部分的氢气进行燃烧，可对发动机的性能改善和废气排放物的降低起到良好作用。
During the combustion process of gasoline engine, adding some hydrogen partly has good effect on improvement of gasoline engine performance and reduction of exhaust emissions.
指出采用废气分析仪进行发动机起动故障诊断具有相当重要的实用价值，并通过试验得到了验证。
It is pointed out that diagnosing engine start failures with the exhaust gas analyzer has very important practical value and it is validated by tests.
经过对废气和烟度的测量表明：发动机燃用纯甲醇基本上可以实现无烟燃烧。
The measurements of exhaust emissions and smoke show that smokeless combustion can be basically realized by using pure methanol in the C. I. engine.
本文主要研究发动机的废气涡轮增压及增压系统。
This paper studies on the exhaust-gas turbocharger of engine and the turbocharger system.
针对仿真结果进行分析，在分析结果的基础上提出了汽车发动机废气能量回收装置在汽车电源系统中应用的可行性。
According to the analysis of the simulation result, putting forward the feasibility of the recycle equipment of automobile engine's waste gas energy applying to automobile power system.
但其发动机所排出的废气含有多种有害成分，会影响井下工人的健康。
However, exhaustions from the engine contain many harmful components which will harm the health of underground working staff.
现在当发动机起动时，关闭的热控制阀引导热废气。
Now, when the engine is started, the hot exhaust gases are deflected by the closed heat-control valve.
合理的利用进、排气管中的压力波，不仅能使更多的废气排出缸外，而且还可以提高发动机的充气效率，使尽可能多的新鲜工质充入。
The utilization of the pressure wave in the intake pipe and exhaust pipe which not only make more exhaust gas out of the cylinder but also improve the charge efficiency and make more fresh gas.
此外，柴油机废气中的颗粒物通常多于汽油发动机。
In addition, diesel exhaust tends to have more particulates than gasoline engine emissions.
柴油燃料中存在乙醇，令人意想不到地提高了连接到柴油发动机废气的柴油机氧化催化剂的有效性。
The effectiveness of a diesel oxidation catalyst attached to a diesel engine exhaust is unexpectedly enhanced by the presence of ethanol in the diesel fuel.
模拟计算了各种工况下的发动机性能：怠速工况降低了残余废气系数，提高了进气流速，稳定性得到改善；
We simulate engine performance in various operating conditions:in idle condition, it reduces the residual gas coefficient and increases airflow velocity, so that idle stability is improved.
近年来在减少柴油发动机毒性废气排放上已经取得了相当的进步。
Considerable progress has been made in recent years in reducing toxic exhaust emissions from diesel engines.
证实了汽车发动机废气对植物细胞具有遗传毒性。
It was proved that the exhaust gas had genetic toxicity to plant cell.
此外，作者还就氮氧化物实船测试中的特殊情况进行了分析，指出实船测试与台架试验中的主要差别，并提出了几种可供参考的废气、发动机、燃油参数的测量方法。
The mainly deference between on-board test and bed test is pointed out. Several available measure methods of exhaust gas, engine and fuel oil's parameter are also brought forward.
从实验结果可知，发动机的缸体的余热量、废气流量和排气温度随着转速和扭矩的增加而增加。
From the experimental results, we can see that the remainder of the engine block heat, air flow and exhaust temperature with the speed and torque increased.
发动机密封性降低，会造成发动机经济性、动力性下降及废气排放指标恶化，因此对各缸压缩压力的检测具有重要意义。
The lowering hermetical state of an engine will not only cause economy and power coastdown, but also worsen the emission evaluating indicators of exhaust gas.
这样通过调节电磁阀就可以实现发动机在不同工况下有最佳的供油提前角与之匹配，从而达到改善发动机经济性和动力性并降低废气排放之目的。
That the optimum fuel injection timing corresponding to one operating mode of engine is determined by adjusting the solenoid valve can improve economy and power, and lower the emissions of engine.
分析了露天矿自卸汽车柴油发动机废气排放的相关问题，提出废气处理的技术措施。
Correlative problems on engine exhaust gas of self-dumping truck at open pit are analyzed. And technical measure for treating exhaust gas is put forward.
本发明的太阳能斯特林发 动机装置利用可再生能源太阳能作为发动机的能量来源、没有废气排放、 绿色环保；
The solar energy Stirling engine device utilizes renewable solar energy as the energy source of the engine, does not have waste gas emission and is environmentally friendly;
无论去往何处，扑面而来的都是未经过滤的发动机废气和废水的厚重又极具穿透性的气息。
Everywhere you turn, the thick, penetrating scent of unfiltered motor exhaust and water in gutters lingers.
试验结果初步说明利用废气再循环，是高压缩比甲醇发动机解决相关问题的重要途径。
The test result shows that using EGR is an important approach to solve related difficulty for high compression ratio methanol engine.
维持低排放：满足主流发动机废气排放控制系统的配套要求，有利于提高催化转换器低废气排放的使用寿命。
Maintain low emissions: Comma Motor Oils are friendly toward modern emission control systems, helping improve catalytic converter service life for low exhaust emissions.
维持低排放：满足主流发动机废气排放控制系统的配套要求，有利于提高催化转换器低废气排放的使用寿命。
Maintain low emissions: Comma Motor Oils are friendly toward modern emission control systems, helping improve catalytic converter service life for low exhaust emissions.
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