The electronic fan is the main component of the cooling system. At this stage, some cars have eliminated fixed fans and replaced them with electric fans.

　　它的特征是可以根據(jù)發(fā)動(dòng)機(jī)溫度調(diào)節(jié)的冷卻空氣量。 車輛冷時(shí)風(fēng)扇不工作，溫度高時(shí)風(fēng)扇速度最快。 電風(fēng)扇安裝在散熱器內(nèi)部。 當(dāng)發(fā)動(dòng)機(jī)溫度升至指定溫度時(shí)，電風(fēng)扇運(yùn)行以加快空氣流動(dòng)，散發(fā)熱量并增強(qiáng)散熱器的散熱效果。

　　It is characterized by the amount of cooling air that can be adjusted according to the engine temperature. When the vehicle is cold, the fan does not work. When the temperature is high, the fan speed is the fastest. The electric fan is installed inside the radiator. When the engine temperature rises to the specified temperature, the electric fan operates to speed up the air flow, dissipate heat and enhance the heat dissipation effect of the radiator.

　　汽車電風(fēng)扇的檢查方法如下：

　　The inspection method of automobile electric fan is as follows:

　　1個(gè)檢查風(fēng)扇電機(jī)

　　1 check fan motor

　　風(fēng)扇電機(jī)燒壞的明顯特征是風(fēng)扇不工作。 如果檢查風(fēng)扇電路是否正常，則溫度控制開關(guān)工作正常，并且直接電源驅(qū)動(dòng)風(fēng)扇無(wú)法旋轉(zhuǎn)。 風(fēng)扇電機(jī)已損壞，應(yīng)更換。

　　The obvious feature of fan motor burnout is that the fan does not work. If you check whether the fan circuit is normal, the temperature control switch works normally, and the direct power drive fan cannot rotate. The fan motor is damaged and should be replaced.

　　2確定電風(fēng)扇的啟動(dòng)溫度

　　2. Determine the starting temperature of the electric fan

　　不同型號(hào)的風(fēng)扇開始運(yùn)行時(shí)的溫度不同，但差異不會(huì)太大。 表中列出了普通型號(hào)電風(fēng)扇的高低速啟動(dòng)溫度。

　　? different models of fans start at different temperatures, but the difference will not be too large. The high and low speed starting temperature of common electric fans are listed in the table.

　　3電風(fēng)扇失速溫度的測(cè)定

　　Measurement of stall temperature of ￣ 3 electric fan

　　當(dāng)發(fā)動(dòng)機(jī)負(fù)荷降低且冷卻液溫度下降時(shí)，電風(fēng)扇將從高檔旋轉(zhuǎn)至低檔。 當(dāng)發(fā)動(dòng)機(jī)冷卻液溫度降至一定溫度時(shí)，低速風(fēng)扇也將停止旋轉(zhuǎn)。 見表。

　　When the engine load decreases and the coolant temperature decreases, the electric fan will rotate from high gear to low gear. When the engine coolant temperature drops to a certain temperature, the low speed fan will also stop rotating. See table.