980K Wheel Loader Braking and Hydraulic Fan System Caterpillar


Variable Pitch Fan System

Usage:

980K GTZ



图 1g01668376

可调风叶角度风扇系统

(1) 风扇毂

(2) 阀

(3) 空气泵

(A) 过滤后的空气

选装的可调风叶角度风扇定期更改风扇叶片的倾角以便清除冷却系统中的碎屑。 空气泵 (3) 从发动机进气口吸取过滤后的空气。 空气泵将空气压缩至 760kPa (110psi)。 阀 (2) 允许压缩空气流向风扇毂 (1) 。 压缩空气移动风扇毂内的一只活塞。 活塞的移动使风扇叶片回转 90 度。 这个移动会使流经空气系统的气流反转。

风扇叶片会在该位置排出冷却系统的碎屑。 净化的默认持续时间为 20 秒。 净化结束后,泵和阀将关闭。 在泵关闭时,风扇毂中的压力会通过阀上的排气口排出。 风扇叶片会回到正常位置。 风扇会继续以正常模式工作,直到下一次净化。 两次净化之间的持续时间的默认设置为 20 分钟。 使用电子技师可在 3 分钟至 60 分钟之间调整净化循环间隔。 随后,另一个净化循环将会启动。 也可以使用 ET 调整净化循环的持续时间。

可以通过显示屏手动启动净化循环。 选择 "Settings(设置)",然后选择 "Engine(发动机)"和 "Reversing Fan Purge(反转风扇净化)"以启动净化循环。 净化循环之间的最小时间间隔为 3 分钟。 如果在前一个循环结束后的 3 分钟内启动开关,则净化循环将会延迟,直至经过 3 分钟为止。 手动净化完成后,自动操作将恢复。

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