Intake passage arrangement for internal combustion engines

摘要

A multi-cylinder internal combustion engine with an intake valve and a throttle valve respective to each cylinder. A respective intake passage interconnects each throttle and intake valve. At least one element of a charge flows through the intake passage. An intake balance conduit includes a plurality of branches and interconnects a plurality (preferably all) of the intake passages. The branches discharge into their respective intake passages at an acute angle relative to the direction of stream flow in the intake passage, preferably substantially downstream from the throttle valve. Exhaust gas recirculation means can optionally discharge into the conduit, preferably substantially downstream from the throttle valve.