Patent ID: 7409944
Filing Date: 2008-08-12
Classification: F02B,F02D,Y02T

Abstract:
1. An intake structure for an internal combustion engine, comprising: an intake passage which is communicated with a combustion chamber of the internal combustion engine, and through which air to be supplied to the combustion chamber flows; and an airflow control valve which is provided in the intake passage, and which controls an airflow in the intake passage, wherein the intake passage has a recess which is formed in an inner wall face of the intake passage and in which the airflow control valve is arranged; and a groove that is connected to the recess, at a substantially center position of the recess in a width direction of the recess, which is substantially perpendicular to a direction in which the air flows in the intake passage, the groove extending from the recess toward a downstream side of the intake passage.