The smoke exhaust color is abnormal. During the operation of the mixer truck, the main components of normal combustion products should be carbon dioxide and a small amount of water vapor. If the mixing car burns abnormally, the exhaust gas will be mixed with incompletely burned carbon particles, hydrocarbons, carbon monoxide and a large amount of water vapor.

此外，還有氮氧化物等。此時，廢氣的顏色可能會變成黑色、藍(lán)色或白色，這意味著排氣煙顏色異常。對于汽油機，正常排氣時應(yīng)無明顯煙霧。

In addition, there are nitrogen oxides. At this time, the color of exhaust gas may turn black, blue or white, which means that the color of exhaust smoke is abnormal. For gasoline engines, there should be no obvious smoke during normal exhaust.

但當(dāng)潤滑油向氣缸上移時，尾氣呈藍(lán)色；當(dāng)燃燒不完全時，尾氣呈黑色；當(dāng)油與水混合時，尾氣呈白色。

However, when the lubricating oil moves upward to the cylinder, the tail gas is blue; When the combustion is incomplete, the tail gas is black; When oil and water are mixed, the tail gas is white.

在混凝土攪拌車的變速器、驅(qū)動橋、主減速器、差速器和制動器總成中經(jīng)常出現(xiàn)“過熱和高溫”。如攪拌車發(fā)動機過熱時，主要是冷卻系統(tǒng)問題，冷卻液不足或泵不工作；變速器、驅(qū)動橋過熱時，主要是潤滑油不足；

"Overheating and high temperature" often appear in the transmission, drive axle, main reducer, differential and brake assembly of concrete mixer truck. For example, when the engine of the mixer truck is overheated, it is mainly the problem of the cooling system, insufficient coolant or the pump does not work; When the transmission and drive axle are overheated, the main reason is insufficient lubricating oil;

制動器過熱時，主要是制動蹄片不工作返回。有時，上述現(xiàn)象會被儀表板上的警示燈直接反映出來，這就需要駕駛員在行駛時注意觀察，外部溫度也可以用手測量。

When the brake overheats, it is mainly because the brake shoe does not work and returns. Sometimes, the above phenomena will be directly reflected by the warning light on the instrument panel, which requires the driver to observe carefully when driving, and the external temperature can also be measured by hand.

泄漏是指發(fā)動機燃油、潤滑油（或齒輪油）、制動液（或壓縮空氣）、動力轉(zhuǎn)向系統(tǒng)油的泄漏。這也是一個明顯的故障癥狀，仔細(xì)觀察可以發(fā)現(xiàn)。

Leakage refers to the leakage of engine fuel, lubricating oil (or gear oil), brake fluid (or compressed air) and power steering system oil. This is also an obvious fault symptom, which can be found by careful observation.

例如，當(dāng)壓縮空氣泄漏時，可以清楚地聽到空氣泄漏的聲音。燃料、潤滑油消耗過大，說明攪拌車技術(shù)狀況惡化，出現(xiàn)故障。

For example, when compressed air leaks, the sound of air leakage can be clearly heard. Excessive consumption of fuel and lubricating oil indicates that the technical condition of the mixer truck has deteriorated and malfunctioned.

面對攪拌車工況突變要提前診斷處理是正確的行為。

In the face of sudden changes in the working condition of the mixer truck, it is the right behavior to diagnose and deal with it in advance. You should have a good understanding of this operation.