| 摘要 |
An intake system for an internal combustion engine comprising an intake passage and an exhaust gas recirculation system merging into the intake passage. The intake passage upstream of the merging point of the exhaust gas recirculation system only is made with an increased heat-insulating ability. Whereby, in the case that the exhaust gas is recirculated, intake air remains at a low temperature without being heated by the atmosphere in the engine compartment until the intake air reaches the merging point, and thereafter, the intake air mixing with the very hot exhaust gas is supplied to the combustion chamber as heat is released therefrom because the intake passage downstream of the merging point is not made with an increased heatinsulating ability.
|
