Mixing truck is the most common special vehicle in construction site. Generally, the road condition is not good on construction site. Because the transportation medium of mixing truck is concrete and the weight is relatively large, the engine with high horsepower and sufficient power is preferred. When buying vehicles, we often hear about intercooled supercharged engine and turbocharged engine.

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、進氣門流至汽缸燃燒室。有效的中冷技術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 intake valve. Effective intercooling technology can reduce the supercharging temperature to 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 a kind of air compressor, which increases the air intake by compressing the air. It uses the inertia impulse of the exhaust gas from 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 and the turbine speed also increase synchronously, the impeller will compress more air into the cylinder, and the increase of air pressure and density can burn more fuel. Correspondingly, increasing the fuel and adjusting the engine speed can increase the output power of the engine.

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，增壓技術不僅廣泛應用在柴油機上，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 with the same displacement and little weight increase. Compared with the non supercharged diesel engine with the same power, the supercharged diesel engine not only has small volume, light weight, high power, but also reduces the unit power Therefore, supercharging technology is not only widely used in diesel engines, but also used in many gasoline fueled vehicles. It is an important technical means to improve the internal combustion engine.