C9 Engines for Caterpillar Built Machines Caterpillar


General Information

Usage:

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C9 发动机是一个直列六缸发动机。 发动机点火顺序为 "1-5-3-6-2-4"。 从发动机飞轮端观察发动机时,发动机为逆时针旋转。 发动机采用一个涡轮增压器。 发动机的缸径为 112 mm (4.41 in),冲程为 149 mm (5.87 in)。 排量为 8.8 L (537 cu in)

C9 发动机采用液压电子式单体喷油器 (HEUI) 进行燃油喷射。 HEUI 取消了用于泵和管路系统的很多机械部件。 HEUI 加强了对正时和空燃混合的控制。 通过精确控制单体喷油器正时,实现正时提前。 发动机转速是由调整喷油持续时间来控制的。 有一个特殊的脉冲轮向电子控制模块 (ECM) 提供信息,以便检测气缸位置和发动机转速。

发动机带有内置诊断功能,以确保所有部件正常工作。Caterpillar 电子技师 (ET) 可用于读取故障部件或状况的数字代码。 间歇性故障会记录和储存在存储器内。

起动发动机

发动机 ECM 将自动提供起动发动机所需的正确燃油量。 盘车起动发动机时不要踩下油门。 如果发动机无法在 20 秒内起动,释放起动开关。 再次使用起动马达前,先使其冷却 2 分钟。


注意

选装的自动乙醚喷射系统是唯一推荐使用的起动液系统。 乙醚过量使用会造成活塞和活塞环损坏。 只能在冷天起动时使用辅助起动液(乙醚)。


寒冷天气起动

寒冷天气发动机的起动和运转性能取决于燃油类型、机油粘度和其它选装的起动辅助装置。 更多有关资料,请参阅操作和保养手册, "寒冷天气操作"专题(保养部分)。

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