0312 気流デフレクタを持つ自動車用触媒コンバータ内の脈動流の速度分布(OS3-2 流れの抵抗低減,オーガナイズドセッション)

概要

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In automobile-exhaust systems, catalytic converters are the main components to produce substantial pressure drops, which induce engine-power loss and fuel-consumption rise. Recently, the authors have reported that a flow deflector placed inside a catalytic-converter diffuser part can reduce drastically the pressure loss in comparison with the no-deflector case, even on pulsating flow as well as steady flow. In the present study, we investigate the velocity-profile improvement by the flow deflector in pulsating flow, using a hot-wire velocimetry.
2009-11-06