C1.1, C1.5 and C2.2 Engines for Caterpillar Built Machines Caterpillar


Basic Engine

Usage:

CB-22 220

缸盖和缸体

缸盖组件上每个气缸都有一个进气门和一个排气门。 每个气门都有一个气门弹簧和气门密封。 气门和气门弹簧由一个气门弹簧座和两个夹头固定到位。 气门密封安装在气门导管的顶部。 气门导管可以更换。

进气门与排气门端口在缸盖左侧。

缸体上不包含缸套。 缸壁为珩磨加工。

气门机构盖由铝制成。 此盖包括以下部件:

  • 一个闭式呼吸器组件

  • 一个机油加注口盖

  • 面向缸盖的密封件

  • 四个盖螺母孔

  • 两个螺栓孔

  • 进气歧管

盖螺母旋在双头螺栓上。 钢制的双头螺栓旋入缸盖。

螺栓旋入摇臂轴组件的盖上。

气门机构盖包含有一个闭式呼吸器组件。 由窜气导致的进入气门室盖的气体可以经由曲轴箱流入进气歧管。

活塞和连杆

发动机的活塞顶上有一个燃烧室,以保证燃油和空气的充分混合。

活塞销偏心安装,可以降低噪声级。

活塞上带有两个压缩环和一个控油环。

正确的活塞高度对于确保活塞不接触到缸盖至关重要。 正确的活塞高度还能确保燃油的有效燃烧(这也是必要的),从而符合排放要求。 为了获得正确的活塞高度,不得对活塞进行机加工。

活塞和连杆与各气缸匹配。

这样才能保证活塞高度的一致。 活塞的内部标记有 "Shibaura"。 这个参考标记面向发动机右侧。 请参阅测试和调整, "活塞高度 - 检查",以了解活塞高度测量步骤。

连杆和连杆盖上的识别标记必须对正。 识别标记面向发动机右侧。

主轴承盖的一侧有一个斜切边。 该斜边面向发动机前方。

正时齿轮箱和齿轮

正时齿轮箱包含以下部件:

  • 曲轴皮带轮的前油封

  • 发动机烟雾调节螺栓

  • 发动机机油泵

  • 设置最大燃油位置的调整螺钉

  • 设置最高速度位置的调整螺钉

  • 惰轮固定螺栓

  • 喷油泵的连杆

  • 调速器的燃油控制杆

  • 油门

C2.2 NA 和涡轮增压式发动机有五个主轴颈轴承。 曲轴有一个压入缸体的前轴承。

止推垫圈为半球形。 C2.2 NA 和涡轮增压式发动机的第三个止推垫圈位于后主轴承座上半部的后侧。

曲轴有前油封和后油封。

正时齿轮箱为铝制。 为了保证齿轮的正确组装,正时齿轮上都打了正时标记。

当下列正时标记对齐时,一号活塞应位于其压缩冲程的上止点位置。

  • 惰轮

  • 曲轴齿轮

  • 凸轮轴齿轮

  • 曲轴皮带轮

  • 正时齿轮箱

曲轴齿轮使惰轮转动,然后带动凸轮轴齿轮转动。

惰轮包含机油泵。 惰轮带动用于转速表的齿轮转动。

曲轴皮带轮驱动水泵上的皮带轮,后者随后驱动交流发电机。

Caterpillar Information System:

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