进、排气门的开闭由凸轮轴控制。
Inlet and outlet doors opening and closing controlled by the camshaft.
当活塞再一次到达下止点时，排气门打开。
当活塞再一次到达下止点时，排气门打开。
活塞的上行通过排气门将废气排出汽缸外。
As the piston travels upward, it pushes the spent gases out through the open exhaust valve.
排气门上的沉积物取决于机油的灰分及油耗。
Deposit on exhaust valve depends on ash level in the engine oil and oil consumption.
检查进[排气门和气门座圈是否磨损或损坏；
Check into[whether friendly mount circle in the thumb latch in the air dishcarge thumb latch abrades or damages;
本文就对柴油发动机排气门材料进行了简要的分析。
This paper briefly analyzed the material of diesel engine exhaust valve.
在发动机中，凸轮轴上的凸轮控制进气门和排气门的开启和关闭。
In the engine, cams on the CAM shaft cause the intake and exhaust valves to open.
但是像进气门一样，排气门需要时间到达充分打开和关闭的位置。
But like the inlet valve, the exhaust valve needs time to reach the full-open position, it also needs time to reach the full-closed position.
利用金相及扫描电镜对增压柴油机排气门盘部断裂原因进行了分析。
Failure analysis on the exhaust valve skirt used in supercharge diesel engine was carried out through metallographic and SEM analysis.
由于进气门关闭、排气门也已关闭，现在活塞上部的空间被密封了。
The space above the piston is now sealed due to the inlet valve closing and the exhaust valve having already closed.
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。
On the compression stroke, the piston moves up. The intake valve and exhaust valve close. The piston compresses the air-fuel mixture.
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。
On the power stroke, the intake valve and exhaust valve close. The spark plug ignites the air-fuel mixture, the piston moves down.
一些高性能发动机有两个单独的凸轮轴，分别负责开关进气门和排气门。
Some high-performance engines have two separate camshafts, one for each set of inlet and exhaust valves.
这种情况通常发生在排气门。任何妨碍排气门密封面贴合的情况都会导致气门烧伤。
Valve Burning. This is usually an exhaust-valve problem. Any condition that prevents normal exhaust-valve seating may lead to valve Burning.
本文介绍了密封面作用长度的快速检测装置，此装置适用于发动机中进排气门的在线检测。
This paper introduced the fast detection device of acting length of the sealing face which is suitable for on line detection of inlet and exhaust valve of the engine.
为提高新型汽车发动机排气门座的耐磨性，第一汽车制造厂研制了铌铬钼钒铸铁排气门座。
To enhance the anti-wearing ability of exhaust valve seat for a new engine, a Nb-Cr-Mo-V cast iron value seat has been developed in the First Automobile Works.
采用宏观断口分析、化学成分分析及金相检验等方法，对发动机排气门杆断裂原因进行了分析。
By means of macroscopic analysis, chemical composition analysis and microstructure examination, the cracking reason of engine exhaust valve stem has been studied.
进气冲程在活塞位与气缸顶部（进气门开启，排气门关闭）时开始，在活塞到达其行程的底部时结束。
The intake stroke starts with the pistonat the top of the cylinder (intake valve open and exhaust valve closed) and stops with the pistonat the bottom of its travel.
本文阐述了发动机排气门失效的原因、形式以及现阶段关于发动机排气门失效的研究方法及研究成果。
This paper describes some reasons and forms of losing efficacy of vavle. And it also shows some research methods and results of the losing efficacy of vavle.
应用结果表明：对于进排气门、正时齿轮和悬架装置等承担疲劳载荷的零部件，激光焊接可满足其较高的强度要求；
The application results show that laser welding can meet higher strength stress demands for those fatigue load parts, such as intake and exhaust valves, timing gear, suspension equipment.
电磁控制进排气门是一种新型的可变配气相位技术，在发动机上以电磁驱动气门比传统的凸轮驱动方式具有更大的优越性。
Electromagnetic control valve actuation is a new kind of variable valve timing technology. It can offer more advantages than general camshaft valve actuation when used in the engine.
计算分析了进排气门实际关闭相位，并根据低压示功图中气门落座冲击引起的干扰信号间接确定发动机运转时的实际关闭相位。
The actual valve closing phases have been calculated, analyzed and determined in accordance with the interference signals caused by valve seating impulse in the low pressure indicator diagram.
通过对模糊控制器的设计，计算出EQ6 10 0汽油机在不同工况下的排气门提前开启角和进气门滞后关闭角的模糊控制值。
The fuzzy control values of the optimized exhaust lag angle and intake advance angle of the EQ6100 engine are calculated by designing the fuzzy controller.
推荐可变压缩比（VCR）方案、可变废气再循环率（EGR）方案、可变排气门关闭时刻方案，以及废气再循环滚流分层充气方案等。
Schemes of variable compression ratio (VCR), variable exhaust gas recirculation (EGR), variable exhaust valve timing, and EGR with stratification by tumble charge flow are recommended.
结果表明，通过调节排气门关闭正时，适当增大缸内残余废气量，可显著改善起动过程初始着火循环的着火燃烧性能和提高起动过程缸内燃烧的稳定性。
The results show that a proper increase of residual gas fraction could promote ignition and combustion stability of first firing cycle significantly during cold start.
进气和排气的气门开合时间随着转速的提高相互交叠，循环着将废气排出。
The intake and exhaust valve opening times will overlap as RPMs rise, recycling some of the charge the outgoing air creates.
发动机气门的二种型式是：进气口和排气口。
排气气门（5）借助于一包括一液压气门辅助控制单元（12）的机械的连接机构（7，8）与凸轮轴相连 接。
The exhaust valve (5) is connected with a camshaft by means of a mechanical connecting mechanism (7, 8) including an hydraulic valve auxiliary control unit (12).
液压气门辅助控制单元（12）将排气气门（5）保持在暂时打开的位置上。
The hydraulic valve auxiliary control unit (12) keeps the exhaust valve (5) in a temporary opening position.
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