当活塞下移时，汽化的燃料和空气的混合物通过进气门进入气缸。
As the piston moves down, the vaporized mixture of fuel and air enters the cylinder through open intake valve.
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.
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.
四冲程发动机的工作循环是以活塞在上止点、进气门打开为开始的。
The cycle of operation of the four-stoke engine begins with the piston at TDC and the intake valve open.
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.
在上止点前打开进气门并在下止点增大气缸内的油气混合物之后关闭。
Opening the intake valve before TDC and closing it after BDC increase the fill of air-fuel mixture in the cylinder.
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.
在进气行程，活塞下行，进气门开启，产生真空使空气被吸进发动机。
On the intake stoke, the piston moves down and the intake valve is opened, a vacuum is produced and causes air to be drawn or pulled into the engine.
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.
清洁喷油器，减少进气门沉积物的形成，去除油质中德水分，节省燃油。
Cleans carbs and injectors, Reduces intake valve deposits, Removes water, Save gas.
证实了可用进气门前混合气的“干”温度作为评价进气预热效果的参数。
Using the "dry" temperature of air-fuel mixture before inlet valve as a criterion to ch...
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.
笔者对进气门处压力进行了计算分析，对可变进气门相位进行了确定及优化。
This paper calculates and analyzes pressure on intake valve and confirms and optimizes variable intake valve phase.
当活塞到达进气行程的下止点时，随着空气燃油的混合气进入气缸，进气门关闭。
When the piston reaches the bottom of the intake stroke, the intake valve closes, trapping the air-fuel mixture in the cylinder.
如果燃油中含有过量的胶粘剂，当混合油气通过气门进入气缸时，就会沉积在进气门上。
Valve deposits. If the fuel has excessive amounts of gum in it, some of this gum may be deposited on the intake valve as the air-fuel mixture passes the valve on the way to the engine cylinder.
本文介绍了一种基于可变位置液压张紧器机构实现控制进气门关闭相位角的电控可变配气相位系统。
A new developed electrical control VVT system is presented which USES a tensioner with variable working position to change the intake valve-closing Angle.
阐述了一种动态测定内燃机进气门座处气体流通特性的方法。测量系在内燃机热车拖动情况下进行。
In this paper a method for dynamically measuring air flow characteristics at intake valve seat of internal combustion engine is presented.
本文介绍了共振系统中气体流动的模拟计算方法，着重介绍进气门边界和分枝接头边界的模型处理。
This paper presents the method to simulate gas flow in a tuned induction system. It puts emphasis on describing the models to simulate the flow through the inlet valve and junction boundaries.
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.
通过实验证明这种液压气门机构可通过改变泄油初始相位角实现进气门最大升程和进气迟闭角的连续可变。
Test results show that the hydraulic valve actuation system can realize continuously variable valve lift and the early intake valve closing by changing the time of oil pressure release.
经过对产品图纸、现生产手段进行综合分析，通过改进气门座尺寸要求，改进加工工艺方法，有效地解决了这一关键质量问题。
By analysis of drawings, machining measures, this key problem is solved effectively through improving the requirement of valve seat size and machining techniques.
结果表明，进气门后方具有较大挤气区域的缸盖具有较强的产生缸内斜轴涡流运动的能力，同时也具有较稳定的斜轴涡流形态。
The results indicate that the cylinder head with larger squash area can produce stronger inclined swirl and the outline shape of inclined swirl is steadier.
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.
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.
应用推荐