PM3412C Power Modules Caterpillar


Engine Description

Usage:

PM3412 5FL
3412发电机组的发动机是12缸发动机。 这种直喷式发动机是4冲程的。 每个气缸盖上有两个进气门和两个排气门。 摇臂和气门靠凸轮轴驱动, 挺柱和推杆执行这一功能。

流体力学调速器或电子控制器控制喷油泵的输出。 驾驶员保持发动机的转速。 燃油喷射泵测量燃油的量并泵送燃油。 高压气态燃油被泵送到喷油嘴。 自动正时提前装置为发动机整个转速范围提供最佳的喷油定时。

进入的空气由空气滤清器过滤。 空气进入发动机气缸之前, 被涡轮增压器压缩。 涡轮增压器由发动机的排气驱动。 标准的发动机是涡轮增压的,有带后冷却的和不带后冷却的两种。

冷却系统包括以下项目:

  • 齿轮驱动的离心泵

  • 一个调节冷却液温度的水温调节器

  • 机油冷却器

  • 包含分流系统的散热器

发动机的润滑油受到冷却和过滤。 发动机润滑油由一个齿轮泵供应。 如果机油黏度高或者机油冷却器和滤清器堵塞,旁通阀可让润滑油不受 限制地流向发动机。

发动机的效率和发动机的性能取决于是否遵守正确操作和保养的建议。 使用推荐的燃油、润滑油和冷却液。 对空气滤清器、燃油系统、润滑系统 和冷却系统的保养应给予特别的注意。 关于保养事项的其他资料,请查阅操作和保养手册, "保养周期表"。

发动机规格

注: 发动机的前端是与发动机飞轮端相对的发动机的另一端。 发动机的左、右侧是从发动机飞轮端来判断的。




图 1g00291566

气缸和气门位置

(A) 进气门

(B) 排气门

Table 1
3412发动机规格    
气缸及排列     12缸V型缸体    
缸径    
137 mm (5.4 inch)    
冲程    
152.4 mm (6.00 inch)    
进气方式     涡轮增压(T), 双涡轮增压(TT), 双涡轮增压后冷却(TTA), 串联涡轮增压后冷却(STA)    
排量    
27 L (1648 cu in)    
点火顺序     1-4-9-8-5-2-11-10-3-6-7-12    
旋转方向(从飞轮端看)     逆时针    
气门间隙(进气)    
0.38 mm (0.0150 inch)    
气门间隙(排气)    
0.76 mm (0.030 inch)    

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