作者: Noboru Kitahara , Noriyasu Kihara , Makoto Kio
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摘要: The device has a body (11) with intake channel (100) containing turnable throttle flap (20) to adjust the flow rate of air within channel. An upstream half section (20a) is turned side an when opened. A downstream (20b) that flow, upstream-sided surface between and smaller than surface. compensation unit (22) on or makes one.