Intake port structure of internal combustion engine

Details Intake port structure of internal combustion engine Intake port structure of internal combustion engine

2011-05-10

2011-05-10

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

Reexamination Certificate

active

07938099

ABSTRACT:
An intake port structure of an internal combustion engine includes an intake port, a valve shaft provided in proximity to an inner wall of the intake port, and an airflow control valve having a proximal end which is pivotally supported on the valve shaft and a distal end which becomes part of the inner wall of the intake port when the airflow control valve is fully opened. The inner wall of the intake port has a recess into which the airflow control valve is partially or entirely retracted when the airflow control valve is fully opened. The recess has a flow smoothing portion located downstream of the proximal end.

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Notification of the First Office Action for Chinese Appl. No. 2007800038204, dated Dec. 11, 2009.
Office Action dated Jul. 14, 2009 from the Japanese Patent Office (and its translation) for JP 2006-040763.

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