21-03-2019 дата публикации
Номер: US20190085717A1
Принадлежит:
A turbocharger including a pivoting vane () aligned with a volute slot () of the housing () and located proximal a downstream end () of a tongue () defining an initial inlet throat area () of the housing. When the vane is in its fully closed position (), inlet exhaust gas is prevented from flowing into the volute slot and, therefore, the turbine wheel, until the inlet exhaust gas passes a downstream end () of the vane. The vane effectively extends the inlet throat area to define a revised inlet throat area (). The A/R ratio of the housing progressively varies as the vane pivots between the fully opened and fully closed positions. 1. A turbocharger comprising:{'b': 10', '25', '10', '15', '17', '11', '21', '10, 'a housing () including a volute slot () located along a midline of an inner periphery of the housing () and a tongue () including a downstream end () defining an end of an initial inlet throat area (/) of the housing ();'}{'b': 50', '60', '65', '70', '57', '23, 'a vane () located proximal to the downstream end of the tongue, above and co-aligned with the volute slot and pivotable between a fully closed (), a neutral (), and a fully opened position (), a downstream end () of the vane defining a second inlet throat area () having a same cross-sectional area as the initial inlet throat area when the vane is in the fully opened position and a reduced cross-sectional area when the vane is in the fully closed position;'}wherein when the vane is in the fully opened position, the vane is adjacent an outer wall of the housing and the volute slot is unobstructed by the vane; andwherein when the vane is in the fully closed position, the volute slot is blocked by the vane up to the downstream end of the vane.2. A turbocharger according to claim 1 , further comprising:{'b': 41', '55, 'means for pivoting () the vane between the fully closed, neutral, and fully opened positions, the pivot means connected to an upstream end () of the vane.'}3. A turbocharger according to ...
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