气门

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。

However, this would also reduce the effective length of the power stroke because once the exhaust valve opens, there is no longer cylinder pressure to force the cylinder down.

然而，这也将减少有效长度的权力，因为一旦中风的排气门打开时，不再有气缸压力，以迫使缸下来。

The main drawback to this design is the power loss on the upward stroke of the piston caused by the exhaust valving.

主要缺点是这种设计的功率损耗的向上中风活塞所引起的排气门。

The Cummins ISB engine, introduced in 1999, was an unusual multi-valve pushrod engine.

康明斯ISB发动机，在1999年推出，是一个不寻常的多气门推杆引擎。

Traditional pushrod valve actuation keeps engine height down for a lower centre of gravity for great handling and ensures more uniform heat dissipation due to absence of a cam chain case.

传统的两个发动机气门驱动不断下降高度较低的重心非常处理，并确保更均匀的散热，由于缺乏一个凸轮链情况。

The pushrod engine boasts variable valve timing, a first in a mass-produced non-overhead cam engine.

在推杆发动机拥有可变气门正时，在第一次大规模生产非顶置凸轮轴发动机。

Showing a pushrod V8 with four valves per cylinder, the diagram also reveals a turbocharging unit and inboard exhaust and outboard intakes.

表现出的两个V8引擎的每缸四气门，该图还揭示了涡轮增压装置和船排气和舷外摄入量。

Process Equipment Design and direct impact on improving the quality and performance valve rocker arm shaft bearings.

现货机械加工行业发生着党课的结构性变化，工艺工装的设计与改良已成为企业生存和发展的必要条件，工艺工装的设计与改良直接影响着气门摇臂轴支座的质量与性能。

This article introduces the role and process analysis of the valve rocker arm bearing support,followed by determining blank size, and then proceed to order the design process, the final fixture design.

本文首先介绍了气门摇臂轴支座的作用和工艺分析，其次确定毛坯尺寸，然后进行了工艺规程设计，最后进行夹具设计。

lectures on the spot machining industry is undergoing structural changes. The design and improvement of technology and equipment have become a necessary condition for the existence and development of enterprises. Process Equipment Design and direct impact on improving the quality and performance valve rocker arm shaft bearings.

现货机械加工行业发生着党课的结构性变化，工艺工装的设计与改良已成为企业生存和发展的必要条件，工艺工装的设计与改良直接影响着气门摇臂轴支座的质量与性能。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。