3500B and 3500B High Displacement Generator Set Engines Caterpillar


Cylinder Block, Liners and Heads

Usage:

793B 1HL
位于缸体左侧的气缸与右侧的气缸成 60 度夹角。 每一个主轴承盖上有四个螺栓将其固定到缸体上。

缸套可以拆下更换。 缸套凸缘落座于缸体上表面。 发动机冷却液流经缸套以便保持缸套冷却。 缸套底部的三个 O 形密封圈在缸套底部和缸体之间形成密封。 缸套凸缘的下方有一个填充带。 这会在缸套顶部和缸体之间形成密封。

发动机上每一缸都有独立的缸盖。 每一缸采用两个进气门和两个排气门,这些气门由推杆气门系统控制。 没有凸肩的气门导管安装时是被压入缸盖的。 单体喷油器的孔口位于四个气门中间。 凸轮轴上的凸尖推动操作单体喷油器的推杆。 燃油直接喷入气缸内。

每个缸盖和缸体之间都有一个隔板。 冷却液经由隔板从缸体流出,并经由每一个缸盖表面的的 8 个孔口流入缸盖。 每一个孔口都使用水密封以防止冷却液渗漏。 密封垫用于密封缸盖、隔板和缸体之间的发动机排油管路。



图 1g01192345
发动机左侧(典型示例)
(1) 凸轮轴盖
(2) 曲轴箱侧盖

凸轮轴盖 (1) 使得维修人员能够接近凸轮轴和气门挺柱。 曲轴箱盖 (2) 使得维修人员能够接近曲轴连杆、主轴承和活塞冷却喷嘴。 拆下这些盖后,所有孔口都可用于检查和维修。

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