INTAKE DEVICE OF INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide bearing structure of a shaft optimally driven without complicated bearing structure in the bearing structure of a shaft to which a valve for controlling a flow rate of intake air is fixed, according to an intake device of an internal combustion engine.

SOLUTION: The intake device 1 of an internal combustion engine 1 comprises: a housing 2; a plurality of intake passages 3 formed to the housing 2; intake control valves 4 disposed to the intake passages 3 to open/close the intake passages 3; a shaft 6 rotatably supported by a plurality of bearing holes 5 disposed to the intake passages 3 to fix the intake control valves 4; and an actuator 7 for rotating the shaft 6. An introduction passage 9 for the bearing holes 5 is provided to introduce air into the bearing holes 5.

COPYRIGHT: (C)2004,JPO