| 1. | The two types of engine valves are intake and exhaust .
发动机气门的二种型式是：进气口和排气口。 |
| 2. | The position of the valves during the power stroke are both closed .
在作功冲程期间，气门的位置都是关闭的。 |
| 3. | The spring is under compression, which means it tries to expand and thereby tries to keep the valve seated .
弹簧被压缩时，意味着弹簧要努力伸张，从而努力保持气门的落座状态。 |
| 4. | Recheck clearance on all valves again after locknut is tightened
防松螺母拧紧后，再对所有气门的间隙重新检查一次。 |
| 5. | To coordinate the four - stroke cycle , a group of parts called the valve train opens and closes the valves ( moves them down and up , respectively )
那些打开和关闭气门的气门传动是为了协调四冲程的工作循环(使他们各自上下移动) 。 |
| 6. | The air inlet noise is one of the major aerodynamic noises of the diesel generator as a result of the pressure fluctuation caused by the periodic opening and closing of the inlet valve
进气噪声是柴油机的主要空气动力噪声之一，它是由进气门的周期性开启与闭合而产生的压力起伏变化而形成的。 |
| 7. | Reciprocating internal combustion engines - designation of the direction of rotation and of cylinders and valves in cylinder heads and definition of right - hand and left - hand in line engines and locations on an engine
往复式内燃机旋转方向气缸和气缸盖上气门的标志及直列式内燃机右机左机和发动机方位的定义 |
| 8. | Fuel efficiency and power output and emission of an internal combustion engine can be significantly improved by optimizing intake and exhaust valve timing and duration and lift as speed changes during operation
改变发动机气门的开启相位、持续时间和升程是改善发动机性能，提高热效率和减少有害排放的一种重要方法。 |
| 9. | Zhejiang shang yu dong xin automobile parts manufacture co . , ltd ( former zhejiang yu huan san you engine valve factory co . , ltd ) is a professional manufacturing factory which produces automobile valves
浙江省上虞市东鑫汽车配件制造有限公司（原浙江玉环三友气门厂） ，是生产汽车气门的专业制造厂，公司拥有一支高素质员工队伍，有着多年从事汽车气门开发、生产、服务的丰富经验。 |
| 10. | Considering the probability of the collision of the valve and the piston of the engine , to obtain the adjust ability of valve timing of the haecvvs in different speeds , the moving of the valve and the piston have been simulated . some strategies to avoid the collision have been put forward . the temperature of solenoid coil rose sharply both in low engine speed and in high engine speed
根据发动机活塞的运动规律及电控可变气门系统的启、闭特性，对不同转速下活塞与气门的相对位置进行仿真，以保证气门不与活塞发生碰撞为约束条件，对气门正时调节能力随转速的变化规律进行了研究，在此基础上讨论了气门与发动机活塞避免碰撞的方案。 |
