渦(wo)輪增(zeng)(zeng)(zeng)(zeng)壓(ya)(ya)器(qi)實際(ji)上是一種空(kong)(kong)(kong)氣壓(ya)(ya)縮機，通過壓(ya)(ya)縮空(kong)(kong)(kong)氣來增(zeng)(zeng)(zeng)(zeng)加(jia)(jia)進(jin)氣量。它是利(li)用發動(dong)機排出的(de)廢氣慣性(xing)沖力來推(tui)動(dong)渦(wo)輪室(shi)內(nei)的(de)渦(wo)輪，渦(wo)輪又帶(dai)動(dong)同(tong)軸的(de)葉輪，葉輪壓(ya)(ya)送(song)由空(kong)(kong)(kong)氣濾(lv)清器(qi)管道送(song)來的(de)空(kong)(kong)(kong)氣，使之增(zeng)(zeng)(zeng)(zeng)壓(ya)(ya)進(jin)入氣缸。當(dang)發動(dong)機轉速(su)(su)增(zeng)(zeng)(zeng)(zeng)大(da)，廢氣排出速(su)(su)度與渦(wo)輪轉速(su)(su)也同(tong)步增(zeng)(zeng)(zeng)(zeng)加(jia)(jia)，葉輪就壓(ya)(ya)縮更多(duo)的(de)空(kong)(kong)(kong)氣進(jin)入氣缸，空(kong)(kong)(kong)氣的(de)壓(ya)(ya)力和密度增(zeng)(zeng)(zeng)(zeng)大(da)可(ke)以燃(ran)(ran)(ran)燒更多(duo)的(de)燃(ran)(ran)(ran)料(liao)，相應增(zeng)(zeng)(zeng)(zeng)加(jia)(jia)燃(ran)(ran)(ran)料(liao)量和調整發動(dong)機的(de)轉速(su)(su)，就可(ke)以增(zeng)(zeng)(zeng)(zeng)加(jia)(jia)發動(dong)機的(de)輸出功率了(le)。