Basing on comparative test stand results, it was established to have good cooling effects, and offers a solution to the oil overheating problem on the 4115l1 engine.

在台架对比试验的基础上，证实散热性能良好，为解决4115l_1发动机机油温度过高问题提供参考方案。

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To test the temperature of the cooling fluid in the engine, and judge the heat condition of the engine, and then change the temperature signal into electrical signal to pass to computer ECU.

检测发动机冷却液温度，判断发动机的热状态，并将温度信号变换为电信号传送给电脑ecu。

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The test result shows the engine overheat problem long time existed in ZA6440 light bus has been solved by the improved cooling system.

试验结果表明，改进后的冷却系解决了ZA6440轻型客车长期存在的发动机过热问题。

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