山東裝載機液力傳動冷卻系統的改進措施

目前裝載機所用液力傳動冷卻系統，多將液力傳動油散熱器內置于發動機管帶式散熱器水室中。這種散熱方式啟動初期傳動效率低，液力傳動油溫度過高，液力傳動油與冷卻液易相互串腔。針對這種情況需要哪些改進措施呢？
 
1、加裝節溫器
根據液力傳動油溫的高低，節溫器可自動改變液力傳動油的循環范圍（大循環或小循環），調節冷卻系統的散熱能力，保證液力傳動變速箱在合適的油溫范圍內工作。
According to the level of hydraulic transmission oil temperature, the thermostat can automatically change the cycle range hydraulic transmission oil (large loop or small cycles), adjust the cooling capacity of the cooling system to ensure proper hydraulic transmission gearbox oil temperature in the range the work.

2、改進散熱器結構
為解決油溫過高和液力傳動油與發動機冷卻液相互串腔問題，決定將內置的液力傳動油散熱器更換為外置的板翅式散熱器。板翅式散熱器具有傳熱效率高、結構緊湊、強度高、適應性強等特點，而且具有擴展的二次表面，這使得它的散熱面積比管帶式散熱器的散熱面積大很多。
To solve the high oil temperature and hydraulic transmission oil and engine coolant chamber string mutual problems, decided to built-in hydraulic transmission oil cooler replacement for external plate-fin heat sink. Plate-fin heat sink has a high heat transfer efficiency, compact structure, high strength, adaptability and other characteristics, but also has expanded secondary surface,which makes it an area much larger than the heat pipe radiator cooling belt area.
3、改進效果
將改進后的新型液力傳動冷卻系統在我公司裝載機上實驗，工作時液力傳動油溫始終處于70～90℃范圍內，冷卻效果良好。
The new hydraulic transmission cooling system improved on my company loaders experiments, hydraulic transmission oil temperature is always at work in the range of 70 ~ 90 ℃, the cooling effect is good.

山東裝載機：http://www.yunnanmsls.cn/