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如何排除電動叉車水溫的異常呢?

來源:http://nukkadh.com/ 日期:2020-02-05 發布人:admin

如何排除電動叉車水溫的異常呢?下面小編來告訴大家方法。

How to eliminate the abnormal water temperature of electric forklift? Here's how.
一、查看水泵
1、 Check the water pump
冷卻水在冷卻系統中不斷循環的動力源來自于水泵。水泵能否建立起滿足的壓力是冷卻系統正常工作的關鍵。在增加冷卻水時,假如隨著發動機轉速的升高,冷卻液面顯著下降,這說明水泵工作正常。反之,則或許水泵與葉輪松脫,冷卻水無法循環。在國產叉車發動機中,水泵、發電機、冷卻電扇共用一條皮帶,因而皮帶的松緊度直接影響到水泵、電扇、發電機的轉速。用手指壓下皮帶的中部,下撓度應在11-13mm(CPC3L車型)為正常,太大會導致水溫過高,太小則會對水泵軸承、發電機軸承造成損傷。
The power source of continuous circulation of cooling water in the cooling system comes from the water pump. Whether the water pump can set up a satisfied pressure is the key to the normal operation of the cooling system. When increasing the cooling water, if the cooling liquid level drops significantly with the increase of engine speed, it means that the water pump works normally. On the contrary, the pump and impeller may be loose, and the cooling water cannot be circulated. In domestic forklift engines, pumps, generators and cooling fans share one belt, so the tightness of the belt directly affects the speed of pumps, fans and generators. Press down the middle part of the belt with your fingers. The lower deflection should be 11-13mm (cpc3l model). If it is too high, the water temperature will be too high. If it is too small, the water pump bearing and generator bearing will be damaged.
二、查看節溫器
2、 View thermostat
現在發動機上采用的節溫器以蠟式節溫器為主。它的主要性能指標是在不同的水溫下節溫器應具有不同的升程。然后動態地控制冷卻水溫的高低。關于不解體冷卻系統來查看節溫器的好壞,主要是經過散熱器進水管和出水管的溫差來判別。在發動機冷機發動的前段時間內,進、出水管用手接觸應有顯著的溫差,在工作了一段時間今后,溫差顯著縮小。當發動機抵達正常工作溫度時(80℃-90℃)時用手接觸已無顯著溫差感覺。當然最準確的檢測方法還是取下節溫器,將其置于熱水中,逐漸加熱,查看閥門的敞開溫度和閥門的升程。
Now the thermostat used in the engine is mainly wax thermostat. Its main performance index is that the thermostat should have different lift under different water temperature. Then dynamically control the cooling water temperature. To check whether the thermostat is good or bad without disassembling the cooling system is mainly determined by the temperature difference between the inlet pipe and the outlet pipe of the radiator. During the period before the engine starts, there should be a significant temperature difference between the water inlet and outlet pipes by hand. After a period of work, the temperature difference will be significantly reduced. When the engine reaches the normal operating temperature (80 ℃ - 90 ℃), there is no significant difference in temperature when it is contacted by hand. Of course, the most accurate test method is to take down the thermostat, put it in hot water, gradually heat it, check the open temperature of the valve and the lift of the valve.
濟南二手叉車
三、查看冷卻電扇
3、 View cooling fans
電扇風量的檢測可將一薄紙放于散熱器前面,當發動機運轉時,若紙能被吹開,則說明風量滿足。這和前置發動機的轎車電扇向內吸風有差異。葉片不能裝反,并應確保電扇放護罩齊全有效。
A thin paper can be placed in front of the radiator for fan air volume detection. When the engine is running, if the paper can be blown open, it means that the air volume meets the requirements. This is different from the front engine's electric fan's inward suction. The blades shall not be installed reversely, and the electric fan cover shall be complete and effective.

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