英语翻译From section BB it can be seen that a mechanism comprisi

英语翻译
From section BB it can be seen that a mechanism comprising an eccentric
in a scotch yoke slides vertically in the two-piece casting that forms not only
the housing but also the driveshaft bearings and caps.Rotation of the control
shaft moves the whole assembly laterally,and therefore the driveshaft into
and out of concentricity with the camshaft sections.The control shaft can be
rotated through only 90° which is why,when it has been actuated to bring the
driveshaft into its eccentric position,as in section BB,there is no clearance
above the scotch yoke.
By arranging the belt or chain drive as in Fig.3.26,lateral movement of
the driveshaft can be made to cause also a phase change.The resultant
changes of the valve timing are illustrated in Fig.3.34,which shows what
the lift characteristics are with the standard timing,what they would be if
only event timing were changed and what it is when both event timing and
phase shift are applied.The whole system can be applied to both the inlet
and exhaust valves but,for optimum cost-effectiveness,only the inlet valve
timing would be varied.
The operating envelope is of course limited by the stresses superimposed
on the valve train by the accelerations due to advancing and retarding the
timing.However,if the eccentricity of the drive is introduced only at speeds
of 2000 rev/min and below,the total stresses in the valve train need be no
higher than those with fixed valve timing at 4000 rev/min.Tests with twin
cylinder motorcycles have shown 32% increases in power and 43% reductions
in specific fuel consumption.

从第BB心跳可以看出,一个机制,包括一个偏心
在苏格兰的枷锁幻灯片,在两件铸造不仅构成垂直
住房也是驱动轴轴承和帽子.旋转的控制
整个大会轴横向移动,因此,驱动轴成
以及与凸轮轴节同心了.控制轴可
只通过旋转90 °这就是为什么,当它已经启动,以使
到其偏心位置驱动轴,如第BB心跳,也没有通关
以上的苏格兰威士忌的枷锁.
通过安排如下图的皮带或链条传动.3.26,横向运动
驱动轴,可也引起相变.由此产生的
阀门的时间变化图所示.3.34,这说明什么
电梯的特点与标准时间是什么,他们会如
唯一的事件时间发生了变化和它是什么时候这两个事件的时间和
应用相移.整个系统可同时适用于进口
和排气阀门,但,为了获得最佳的成本效益,只进水阀
时间将是多种多样的.
经营信封是由有限的应力叠加过程
由加速度上,由于阀列车前进,延缓
时序.但是,如果该驱动器的偏心只引入速度
2000转/分及以下,总强调必须在阀没有火车
高于固定气门正时与那些在4000转/分.试验的双
摩托车气缸显示32％的功率增加和减少43％
在具体的燃油消耗