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2. 发明公开

EP0080810A1 A variable inlet area turbine 有权
标题翻译：可变入口区涡轮机
公开(公告)号：EP0080810A1
公开(公告)日：1983-06-08
申请号：EP82305805.2
申请日：1982-11-02
申请人： HOLSET ENGINEERING COMPANY LIMITED
发明人： Flaxington, David , McKean, Peter Stuart , Walsham, Brian Ernest , Hooley, Desmond John , Szczupak, David Teofil , Westcott, John David
IPC分类号： F01D17/14
CPC分类号： F01D17/143 , F02B3/06
摘要： A turbocharger for a diesel engine 34, wherein combustion air is supplied under pressure to the engine's intake manifold 32 from a centrifugal compressor 20 rotated by a turbine wheel 18 driven by exhaust gas from the engine supplied to inlet volute 44. Exhaust gas from the volute impinges on the turbine wheel after passing between stationary vanes 60 in an annular inlet passage between thin wall 50 and wall 46 of turbine housing 40. In this passage is a thin wall annular flange 64 slotted to fit over the vanes. The flange is part of a thin wall ring 62 stamped from stainless steel movable across the passage to control the inlet area thereof. The ring 62 is movable by actuators 80 (only one shown) having rods 74 connected to the ring. Springs 116 act on the rods 74 to urge the flange 64 towards the wall 46 thus reducing the area of the inlet passage so exhaust gas rushes through the reduced inlet and speeds the turbine and compressor providing at manifold 32 an increased air pressure. This increased pressure is used to urge diaphragm 100 in the actuators 80 in opposition to the springs and thus move ring 62 to increase the inlet passage area. The thinness of the ring 62 minimizes the chance that exhaust products will make it stick to vanes 60 and enables the ring to move quickly in response to actuators 80.
摘要翻译：用于柴油发动机34的涡轮增压器，其中燃烧空气在压力下由离心压缩机20供应到发动机的进气歧管32，涡轮机叶轮18由来自发动机的废气驱动而供应到进气蜗壳44.涡壳的排气在静止叶片60之间穿过薄壁50和涡轮机壳体40的壁46之间的环形入口通道之后撞击在涡轮机叶轮上。在该通道中是开有狭缝的环形凸缘64以配合在叶片上。该凸缘是薄壁环62的一部分，该薄壁环62由不锈钢冲压而成，该不锈钢可在该通道上移动以控制其入口区域。环62可通过具有连接到环的杆74的致动器80（仅示出一个）移动。弹簧116作用在杆74上以将凸缘64推向壁46，从而减小入口通道的面积，因此排气穿过减小的入口并且加速在歧管32处提供增加的空气压力的涡轮机和压缩机。该增加的压力用于推动致动器80中的隔膜100与弹簧相反，并因此移动环62以增加入口通道面积。环62的薄度使得排气产品将使其粘在叶片60上的可能性最小，并且使得环响应于致动器80而快速移动。

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