攪拌機又叫混凝土攪拌運輸機，在建筑工地上使用較多，屬于專用機的一種，隨著社會的發(fā)展，攪拌機的使用越來越廣泛，不知道大家發(fā)現(xiàn)沒有，很多的大機在冬天啟動的時候，都是先讓發(fā)動機響一會兒，再起步行駛，這就叫做熱機，那么攪拌機為什么要熱機呢？

Mixers, also known as concrete mixer conveyors, are used more on construction sites and belong to a kind of special machines. With the development of society, mixers are used more and more widely. I wonder if you have found that many large machines start in winter by letting the engine ring for a while before starting. This is called a hot machine. So why do mixers need hot machines?

一般情況下，專用機的發(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佳狀態(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。

Generally, the normal operating temperature of the engine of the special engine is 85 ℃ - 95 ℃. When the engine is at this temperature, the fit clearance of other parts is just within the design range. The combustion condition in the combustion chamber is good, and the thermal efficiency and performance of the engine are in good condition. If the temperature is lower than this, the engine is too cold, which will have a great impact on the service life of the engine.

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，那么攪拌機的熱機時間將會更長。

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 operating temperature; When the engine is at 40 ℃ - 50 ℃, the wear of the engine 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 the engine is in the north where the temperature is relatively low, the hot engine time of the mixer will be longer.

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，機輛啟動困難；還可能會導致輪胎變硬、變脆，與地面的附著力降低，機輛的操控性下降，減震器的油液粘度增加，緩沖吸振的能力會下降，機輛就會發(fā)生異響，乘坐的舒適性就會下降；變速箱的油的粘度變大，造成換擋困難。

In addition to affecting the engine, the low temperature will also affect other aspects of performance, such as the low temperature will lead to a significant decline in battery capacity, making it difficult to start the locomotive and vehicle; It may also lead to hard and brittle tires, reduced adhesion to the ground, decreased vehicle handling, increased oil viscosity of shock absorbers, reduced ability to buffer and absorb vibration, abnormal noise, and decreased ride comfort; The viscosity of the oil in the transmission becomes larger, causing difficult shifting.

現(xiàn)在的很多的混凝土攪拌機會安裝節(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)下熱機還是非常有必要的，熱機的時間也要適當，一般在一分鐘左右就差不多了。更多相關(guān)內(nèi)容就來我們網(wǎng)站http://www.wishnailspa.com咨詢吧！

Nowadays, many concrete mixers are equipped with thermostats, fan clutches or electronic fans, louvers with automatic opening adjustment, built-in exhaust pipes, etc., to alleviate the damage caused by low temperature to the engine. However, it is very necessary to heat the engine at low temperature, and the time of the heat engine should be appropriate, usually about one minute. More relevant content will come to our website http://www.wishnailspa.com Consult!