Ansaugsystem für einen Verbrennungsmotor

摘要

A suction system for an internal combustion engine has branch pipes of an intake manifold disposed on and connected to a cylinder head through a swirl valve assembly. The swirl valve assembly includes first and second intake passages provided in a main body thereof and a swirl valve disposed in one of the first and second intake passages. The first and second intake passages communicate with a single combustion chamber, and a tank chamber is provided in the main body and is defined between first and second intake passage walls and a peripheral wall which surrounds the first and second intake passage walls. The tank chamber is further defined and closed off by being connected to a structure associated with either the branch pipes or the cylinder head, and a negative pressure introduction passage is provided in the main body and introduces negative suction pressure into the tank chamber from the other of the first and second intake passages.