计算结果表明，对称凸轮会得到一个不对称的气门运动规律。
It is found that the displacement, velocity and acceleration of air valve are unsymmetrical although the shape of CAM is symmetrical.
根据气门运动规律设计气门弹簧特性，按等强度原则设计组合式气门弹簧。
The design of the valve spring performance should be in accordance with the valve movement pattern and...
结果表明，采用高次多项式动力凸轮用于高速汽油机凸轮设计，能够获得相对平稳的气门运动特性。
The research results reveal that comparative valve balanced movement characteristic can obtain using high order polynomial dynamic cam in high speed gasoline engine.
建立了反映气门运动的粒子阻滞模型、障碍物单元模型以及贴体气门模型，并提出计算粒子阻滞的修正公式。
The particle valve model, obstacle cell valve model as well as the body fitted valve model representing the valve motion were established.
通过对全可变液压气门机构的气门升程和液压压力的试验测量，研究了全可变液压气门机构的气门运动特性。
The Characteristics of valve movement using fully variable hydraulic valve train is studied by measurement of valve lift and oil pressure of fully variable hydraulic valve train.
同时考虑了气门初始间隙以及由此产生的冲击现象，并研究了凸轮轴刚度、摇臂支座刚度及凸轮升程高阶频率对气门运动规律的影响。
Further more it also investigates the influence of the stiffness of CAM shaft and rock arm supporter and the high order frequency of CAM profile on the dynamic response of valve system.
为了将凸轮的运动传给气门需要一些附属装置。
To transfer the motion of the CAM upward to the valve, additional parts are needed.
介绍了一种根据凸轮升程数据求取气门理论运动规律的计算方法。
A new mathematical method of valve theoretic movement rules according to the CAM lift data was introduced.
强化空气运动的结果有利于组织燃料在缸内的浓度分布，从而为在二气门汽油机上实现稀薄燃烧打下基础；
The stronger air motions are helpful in organizing mixture strength distribution and then realizing lean mixture combustion in two-valve gasoline engines.
建立发动机气门振动的运动微分方程，该模型杆端作支承运动，考虑阻尼和较复杂的边界条件。
Considering damping and complicated boundary conditions for the valve support movement, the dynamic equation of the valve vibration of engine is found.
向下的运动使气门向下移动离开气门座，气门被打开。
This downward movement forces the valve to move downward off its seat so that it opens.
本设备使用的力量平衡系统，以控制供应和排气门的运动。
This device USES a force balance system to control the movement of the supply and exhaust valves.
作功冲程耗尽了所有的气体，这样就必须采取相应的措施排出废气以及向气缸内再充入新鲜的可燃混合气：气体的运动由气门来控。
The power stroke "uses up" the gas, so means must be provided to expel the burnt gas and recharge the cylinder with a fresh petrol-air mixture: this control of gas movement is the duty of the valves;
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.
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.
对顶置式气门机构进行了运动学分析，通过平底推杆的运动规律求得气门的升程、速度和加速度，分别给出了精确解和近似解。
In this paper, kinematics of upper air valve unit is analyzed. The displacement, velocity and acceleration of air valve are calculated by accurate and approximate methods.
对顶置式气门机构进行了运动学分析，通过平底推杆的运动规律求得气门的升程、速度和加速度，分别给出了精确解和近似解。
In this paper, kinematics of upper air valve unit is analyzed. The displacement, velocity and acceleration of air valve are calculated by accurate and approximate methods.
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