Automatic feeding mixer is widely used in construction sites, which belongs to a kind of special vehicle. With the development of society, self feeding mixer is more and more widely used. When many big cars start in winter, they first let the engine ring for a while, and then start driving. This is called hot car. Why do self feeding mixer need hot car?

一般情況下，專用車的發(fā)動機的正常使用溫度在85℃-95℃之間，當發(fā)動機在這個溫度的時候，其它各部分的配合間隙正好在設(shè)計的范圍內(nèi)，燃燒室內(nèi)的燃燒狀態(tài)好，發(fā)動機的熱效率和各方面性能處于好狀態(tài)，如果低于這個溫度，那屬于發(fā)動機過冷，這會對發(fā)動機的使用壽命造成很大的影響的。

In general, the normal operating temperature of the engine of a special vehicle is between 85 ℃ and 95 ℃. When the engine is at this temperature, the fit clearance of other parts is just within the design range. The combustion state in the combustion chamber is good, and the thermal efficiency and all aspects of performance of the engine are in a good state. If it is lower than this temperature, it belongs to the engine supercooling, which will affect the performance of the engine Service life has a great impact.

經(jīng)研究表明，發(fā)動機的磨損在80%是發(fā)生在冷啟動的一瞬間，發(fā)動機在低溫時的磨損是正常工作溫度的6倍；發(fā)動機在40℃-50℃時，發(fā)動機的磨損增加60%-80%，功率降低25%，油耗增加8%-10%，機油的性能衰減也更快，如果是在氣溫比較低的北方，自動上料攪拌機的熱車時間將會更長。

The research shows that 80% of the engine wear occurs at the moment of cold start, and the engine wear at low temperature is 6 times of the normal working temperature; when the engine is at 40 ℃ - 50 ℃, the engine wear increases by 60% - 80%, the power decreases by 25%, the fuel consumption increases by 8% - 10%, and the performance of the engine oil decays faster. If it is in the north where the air temperature is relatively low, the warm-up time of the automatic feeding mixer is shorter It will be longer.
             

自拌混凝土攪拌機，低溫除了影響發(fā)動機外，還會對其它方面的性能造成影響，比如低溫會導致電瓶容量大幅度下降，車輛啟動困難；還可能會導致輪胎變硬、變脆，與地面的附著力降低，車輛的操控性下降，減震器的油液粘度增加，緩沖吸振的能力會下降，車輛就會發(fā)生異響，乘坐的舒服性就會下降；變速箱的油的粘度變大，造成換擋困難。

For self mixing concrete mixer, low temperature not only affects the engine, but also affects the performance of other aspects. For example, low temperature will lead to a substantial decline in battery capacity and difficulty in starting the vehicle; it may also lead to hardening and embrittlement of tires, reduction of adhesion to the ground, reduction of vehicle handling, increase of oil viscosity of shock absorber, reduction of shock absorption capacity and reduction of vehicle stability There will be abnormal noise, and the ride comfort will be reduced; the viscosity of the oil in the gearbox will become larger, which will make it difficult to shift.

現(xiàn)在的很多的混凝土攪拌運輸車會安裝節(jié)溫器、使用風扇離合器或者電子風扇、自動調(diào)節(jié)開度的百葉窗、內(nèi)置式排氣管等等，來緩解低溫對發(fā)動機造成傷害。但是在低溫狀態(tài)下熱車還是非常有必要的，熱車的時間也要適當，一般在一分鐘左右就差不多了。

Now many concrete mixer trucks will install thermostat, use fan clutch or electronic fan, automatically adjust the opening of the shutter, built-in exhaust pipe and so on, to alleviate the low temperature damage to the engine. However, it is necessary to heat up the car at low temperature. The time of heating up the car should be appropriate, generally about one minute.

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Thank you for reading, hope the above content is helpful to you, for more information, please click: automatic feeding mixer http://www.wishnailspa.com