Methods and structure for reducing losses in 90 degree waste gates for turbochargers
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United States of America Patent
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Dec 3, 2015
app pub date -
Dec 2, 2013
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Dec 19, 2012
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Abstract
A turbocharger (10) has an improved wastegate valve assembly (45) wherein a port-controlling valve body (44) includes flow formations which serve to reduce exhaust gas flow in non-optimal directions transverse to an optimal flow direction in the direction of a wastegate passage (26). These flow formations serve to optimize or maximize the flow of exhaust gas in the optimal or primary flow direction as the exhaust gas flow turns through a turn angle (47) from an inlet direction (29) to the optimal flow direction.
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