3126B Engine for Caterpillar Built Machines Caterpillar


Engine Design

Usage:

120H 124



图 1g01198472

气缸和气门的位置

(A) 排气门

(B) 进气门

缸径 ... 110 mm (4.3 in)

冲程 ... 127 mm (5.0 in)

排量 ... 7.25 L (442 cu in)

缸号 ... 6

气缸布置 ... 直列式

每气缸气门数 ... 3

为检查发动机气门间隙的设定值,发动机必须是冷机且发动机必须停止。 发动机气门间隙设定值

进气 ... 0.38 ± 0.08 mm (0.015 ± 0.003 in)
排气 ... 0.64 ± 0.08 mm (0.025 ± 0.003 in)

燃烧类型 ... 直喷式

点火顺序 ... 1 - 5 - 3 - 6 - 2 - 4

曲轴旋转方向是通过从发动机飞轮端观察来确定的。 曲轴旋转 ... 逆时针

注: 发动机的前端是指与发动机飞轮端相对的一端。 发动机左右侧是通过从发动机飞轮端观察来确定的。 1 号缸是最前端的气缸。

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