Modern car engines that use rolling or sliding tappets for transmitting the rapid up-down lifting motion of the spinning camshafts—to open and close the engine’s inlet and exhaust valves—seem immune.
使用滚柱挺杆或滑动挺杆来传动旋转凸轮轴做上下快速提升动作（开启和关闭发动机的进气阀和排气阀）的现代型汽车发动机似乎不会出现上述自动熄火的情况。
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.
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。
Close the clamp for the APU exhaust extension.
合上apu排气延伸环的卡箍。
On the compression stroke, the piston moves up. The intake valve and exhaust valve close. The piston compresses the air-fuel mixture.
在压缩行程，活塞向上运动，进气门和排气门关闭，活塞压缩混合气。
Modern car engines that use rolling or sliding tappets for transmitting the rapid up-down lifting motion of the spinning camshafts-to open and close the engine's inlet and exhaust valves-seem immune.
使用滚柱挺杆或滑动挺杆来传动旋转凸轮轴做上下快速提升动作(开启和关闭发动机的进气阀和排气阀)的现代型汽车发动机似乎不会出现上述自动熄火的情况。
The soil and vegetable Hg had close relations with atmosphere Hg, and the automobile exhaust Hg contamination degree of the highway profiles increased with increasing road age and vehicle flow.
大气汞含量与蔬菜和土壤的汞污染具有明显的相关性。公路系统汽车尾气汞污染强度随公路路龄、车流量增大而增强。
The close-loop EGI system with threeway catalyst has been verified efficiently to reduce the harmful ingredient in exhaust gas of car.
在汽车中应用带有三元催化剂的闭环电喷系统可以有效降低汽车尾气中的有害成分。
On the power stroke, the intake valve and exhaust valve close. The spark plug ignites the air-fuel mixture, the piston moves down.
在作功行程，进气门和排气门关闭，火花塞点燃混合气，活塞向下移动。
Automobile catalysts, as the most effective means for automobile exhaust pollution control, are also one of the sorts of catalysts that are being paid close attention to today.
汽车用催化剂是当代最受人关注的催化剂之一，是当前控制汽车污染的最有效手段。
Through close loop control by an oxygen sensor, the actual air-fuel ratio is controlled to the ideal air-fuel ratio and the exhaust emission is reduced by a three unique catalytic converter.
利用氧传感器实现闭环控制，将实际空燃比控制在理论空燃比附近，从而通过三元催化剂控制排放。
General installed in the valve cylinder and the cylinder valve between the tube close to the road, so that the exhaust cylinder without a valve directly into to the cylinder for the purpose of rapid.
该阀一般安装在气缸与换向阀之间靠近气缸的管路上，使气缸的排气不经换向阀直接排出，达到气缸快速换向的目的。
It can close the engine's exhaust pipe and make the engine to be an auxiliary decelerating brake and absorbing the energy of the motor by the engine.
用来关闭发动机的排气管，从而把发动机作为辅助减速制动器使用，把汽车的能量由发动机吸收掉。
It can close the engine's exhaust pipe and make the engine to be an auxiliary decelerating brake and absorbing the energy of the motor by the engine.
用来关闭发动机的排气管，从而把发动机作为辅助减速制动器使用，把汽车的能量由发动机吸收掉。
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