AIR INTAKE STRUCTURE FOR INTERNAL COMBUSTION ENGINE

摘要

<P>PROBLEM TO BE SOLVED: To provide air intake structure for an internal combustion engine capable of preventing freezing of a throttle valve without lowering intake efficiency. Ž<P>SOLUTION: A straight passage 221 forming a part of an intake passage 22 is extended toward the throttle valve 20. The intake passage 22 includes a moisture separating passage 41, and an inlet 41a of the moisture separating passage 41 is connected to the straight passage 221, and an outlet 41b thereof is connected to a downstream side of a connection position of the inlet 41a to the straight passage 221 in the flow direction. A selector valve 42 is arranged in a junction part P of the outlets 221b and 41b of the straight passage 221 and the moisture separating passage 41 on an upstream side of the throttle valve 20. The selector valve 42 opens/closes the outlet 41a of the moisture separating passage 41 or the outlet 221b of the straight passage 221 to switch a passage for making air flow to the throttle valve 20 between the straight passage 211 or the moisture separating passage 41. The selector valve 42 is controlled by an ECU based on the temperature of a diesel engine. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž