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CN101375037A 内燃发动机的进气口结构 无效 - 驳回

内燃发动机的进气口结构
摘要：
一种内燃发动机的进气口结构，包括进气口(10A)、设置在进气口的内壁附近的阀杆(2)、以及气流控制阀(IA)，气流控制阀的近端枢转地支撑在阀杆(2)上，气流控制阀的远端在气流控制阀完全打开时成为进气口的内壁的一部分。进气口的内壁具有凹部，在气流控制阀完全打开时，气流控制阀部分地或全部地缩进该凹部中。该凹部具有位于近端下游的气流平滑部分。
摘要（英）：

An intake port structure of an internal combustion engine includes an intake port (10A), a valve shaft (2) provided in proximity to an inner wall of the intake port, and an airflow control valve (IA) having a proximal end which is pivotally supported on the valve shaft (2) 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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