在圓形活塞的VV化油器中, 活塞是由進(jìn)氣歧管真空移動的.In the roundpiston VV carburetor, the piston is moved by intake - manifold vacuum.這個真空叫做進(jìn)氣歧管真空.這種進(jìn)氣歧管真空隨運(yùn)轉(zhuǎn)情況而變化.This vacuum, called intake - manifold vacuum, varies as the operating conditions...