Automatic concrete loading mixer is a special vehicle more common in construction sites. Generally, the road conditions on construction sites are not good. Because the transportation medium of mixer is concrete and its weight is relatively large, it is more likely to choose engines with high horsepower and sufficient power. When buying vehicles, we often hear of Intercooled supercharged engines and turbocharged engines.

中冷增壓就是當渦輪增壓器將新鮮空氣壓縮經(jīng)中段冷卻器冷卻，然后經(jīng)進氣管、進氣門流汽缸燃燒室。有效的中冷技術(shù)可使增壓溫度下降到50攝氏度以下，有助于減少廢氣的排放和提高燃油的經(jīng)濟性。

Intercooling supercharging is when the turbocharger compresses the fresh air, cools it through the middle cooler, and then flows to the cylinder combustion chamber through the air inlet pipe and inlet valve. Effective intercooling technology can reduce the boost temperature below 50 ℃, which helps to reduce exhaust emissions and improve fuel economy.

中冷增壓實際上是一種空氣壓縮機，通過壓縮空氣來增加進氣量，它是利用發(fā)動機排出的廢氣慣性沖力來推動渦輪室內(nèi)的渦輪，渦輪又帶動同軸的葉輪，葉輪壓送空氣濾清器送來的空氣，使之增壓進入氣缸。當發(fā)動機轉(zhuǎn)速增快，廢氣排出速度與渦輪轉(zhuǎn)速也同步增快，葉輪就壓縮更多的空氣進入氣缸，空氣的壓力和密度增大可以燃燒更多的燃料，相應(yīng)增加燃料和調(diào)整一下發(fā)動機的轉(zhuǎn)速，就可以增加發(fā)動機的輸出功率。

Intercooling supercharging is actually an air compressor, which increases the air intake through compressed air. It uses the inertial impulse of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber. The turbine drives the coaxial impeller, which presses the air sent by the air filter to increase the pressure into the cylinder. When the engine speed increases, the exhaust gas discharge speed increases synchronously with the turbine speed, and the impeller compresses more air into the cylinder. The increase of air pressure and density can burn more fuel. By increasing the fuel and adjusting the engine speed, the output power of the engine can be increased.

中冷增壓系統(tǒng)平時是不工作的，只有當車輛滿載或者達到一定的速度時，中冷增壓可以是柴油機在排量不變，重量增加不大的情況下達到增加輸出功率的目的，與相同功率的非增壓柴油機相比，增壓柴油機不僅體積小，重量輕，功率大，而且還降低了單位功率的成本，因此，增壓技術(shù)不僅廣泛應(yīng)用在柴油機上，現(xiàn)在很多燃油為汽油的車輛也在使用中冷增壓系統(tǒng)，它是改善內(nèi)燃發(fā)動機的重要技術(shù)手段。

The intercooled supercharging system usually does not work. Only when the vehicle is fully loaded or reaches a certain speed, the intercooled supercharging can increase the output power of the diesel engine under the condition of constant displacement and small weight increase. Compared with the non supercharged diesel engine with the same power, the supercharged diesel engine not only has small volume, light weight and high power, It also reduces the cost per unit power. Therefore, supercharging technology is not only widely used in diesel engines, but also many vehicles with gasoline are using intercooling supercharging system. It is an important technical means to improve internal combustion engines.