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如何排除电动叉车水温的异常呢?

来源:http://www.jnhgjx.net/ 日期:2020-02-05 发布人:admin

如何排除电动叉车水温的异常呢?下面小编来告诉大家方法。

How to eliminate the abnormal water temperature of electric forklift? Here's how.
一、查看水泵
1、 Check the water pump
冷却水在冷却系统中不断循环的动力源来自于水泵。水泵能否建立起满足的压力是冷却系统正常工作的关键。在增加冷却水时,假如随着发动机转速的升高,冷却液面显着下降,这说明水泵工作正常。反之,则或许水泵与叶轮松脱,冷却水无法循环。在国产叉车发动机中,水泵、发电机、冷却电扇共用一条皮带,因而皮带的松紧度直接影响到水泵、电扇、发电机的转速。用手指压下皮带的中部,下挠度应在11-13mm(CPC3L车型)为正常,太大会导致水温过高,太小则会对水泵轴承、发电机轴承造成损伤。
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、查看节温器
2、 View thermostat
现在发动机上采用的节温器以蜡式节温器为主。它的主要性能指标是在不同的水温下节温器应具有不同的升程。然后动态地控制冷却水温的高低。关于不解体冷却系统来查看节温器的好坏,主要是经过散热器进水管和出水管的温差来判别。在发动机冷机发动的前段时间内,进、出水管用手接触应有显着的温差,在工作了一段时间今后,温差显着缩小。当发动机抵达正常工作温度时(80℃-90℃)时用手接触已无显着温差感觉。当然最准确的检测方法还是取下节温器,将其置于热水中,逐渐加热,查看阀门的敞开温度和阀门的升程。
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.
济南二手叉车
三、查看冷却电扇
3、 View cooling fans
电扇风量的检测可将一薄纸放于散热器前面,当发动机运转时,若纸能被吹开,则说明风量满足。这和前置发动机的轿车电扇向内吸风有差异。叶片不能装反,并应确保电扇放护罩齐全有效。
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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