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公开(公告)号：US08601812B2
公开(公告)日：2013-12-10
申请号：US13093577
申请日：2011-04-25
CPC分类号： F01D17/143 , F01D17/167 , F05D2220/40
摘要： A variable geometry turbine comprising a turbine wheel supported in a housing for rotation about a turbine axis with an annular inlet passageway defined between a radial face of a nozzle ring and a facing wall of the housing. The nozzle ring is movable along the turbine axis to vary the width of the inlet passageway and of vanes that are received in corresponding slots in the facing wall. Each vane major surface such that at a predetermined axial position of the nozzle ring relative to the facing wall the recess is in axial alignment with the slot and affords an exhaust gas leakage path through the inlet passageway. The recess is configured to reduce the efficiency of the turbine at small inlet gaps appropriate to engine braking or exhaust gas heating modes.
摘要翻译： 一种可变几何涡轮机，包括：涡轮机叶轮，其被支撑在壳体中，用于围绕涡轮机轴线旋转，其具有限定在喷嘴环的径向面和壳体的相对壁之间的环形入口通道。 喷嘴环可沿着涡轮机轴线移动以改变入口通道和被接纳在相对的壁中的相应狭槽中的叶片的宽度。 每个叶片主表面使得在喷嘴环的相对于相对壁的预定轴向位置处，凹槽与槽对准，并且通过入口通道提供排气泄漏路径。 该凹部构造成在适合于发动机制动或排气加热模式的小入口间隙处降低涡轮机的效率。
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公开(公告)号：US08291703B2
公开(公告)日：2012-10-23
申请号：US12499836
申请日：2009-07-09
IPC分类号： F02D23/00 , F01B25/02 , F01D17/12 , F03D7/00 , F04D15/00 , F04D27/00 , F04D29/44 , F04D29/56
CPC分类号： F01D17/167 , F02B37/22 , Y02T10/144
摘要： A variable geometry turbine has a gas inlet chamber and a gas flow inlet passage downstream of the inlet chamber and upstream of said turbine wheel. The inlet passage is defined between a moveable first wall and a second wall and an actuator is operable to control displacement of the first wall in order to vary the size of the gas flow inlet passage. A piston member defining the first wall or being connected to it is received in a piston chamber and serves to move the first wall as a result of displacement of the piston member in the piston chamber. A bypass passage defined in the housing and extends between the piston chamber and a location in the turbine upstream of the inlet passage for delivering gas to the piston chamber. The bypass passage is disposed such that gas introduced through the bypass passage pressurizes the chamber and applies a force to displace the piston member in a direction that causes the first wall to move towards the second wall. The gas, which may be the exhaust gas from an engine, thus serves to assist the operation of the actuator.
摘要翻译： 可变几何涡轮具有气体入口室和气体入口通道，在入口室的下游和所述涡轮机叶轮的上游。 入口通道限定在可移动的第一壁和第二壁之间，并且致动器可操作以控制第一壁的位移，以便改变气体流入口通道的尺寸。 限定第一壁或连接到其上的活塞构件被容纳在活塞室中，并且用于通过活塞构件在活塞室中移动而移动第一壁。 旁通通道限定在壳体中并且在活塞室和在入口通道上游的涡轮机中的位置之间延伸，用于将气体输送到活塞室。 旁通通道被设置成使得通过旁通通道引入的气体对腔室加压并施加力以沿着使第一壁向第二壁移动的方向移动活塞构件。 可能是来自发动机的废气的气体因此用于辅助致动器的操作。
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公开(公告)号：US20100037605A1
公开(公告)日：2010-02-18
申请号：US12499836
申请日：2009-07-09
IPC分类号： F02D23/00
CPC分类号： F01D17/167 , F02B37/22 , Y02T10/144
摘要： A variable geometry turbine has a gas inlet chamber and a gas flow inlet passage downstream of the inlet chamber and upstream of said turbine wheel. The inlet passage is defined between a moveable first wall and a second wall and an actuator is operable to control displacement of the first wall in order to vary the size of the gas flow inlet passage. A piston member defining the first wall or being connected to it is received in a piston chamber and serves to move the first wall as a result of displacement of the piston member in the piston chamber. A bypass passage defined in the housing and extends between the piston chamber and a location in the turbine upstream of the inlet passage for delivering gas to the piston chamber. The bypass passage is disposed such that gas introduced through the bypass passage pressurises the chamber and applies a force to displace the piston member in a direction that causes the first wall to move towards the second wall. The gas, which may be the exhaust gas from an engine, thus serves to assist the operation of the actuator.
摘要翻译： 可变几何涡轮具有气体入口室和气体入口通道，在入口室的下游和所述涡轮机叶轮的上游。 入口通道限定在可移动的第一壁和第二壁之间，并且致动器可操作以控制第一壁的位移，以便改变气体流入口通道的尺寸。 限定第一壁或连接到其上的活塞构件被容纳在活塞室中，并且用于通过活塞构件在活塞室中移动而移动第一壁。 旁通通道限定在壳体中并且在活塞室和在入口通道上游的涡轮机中的位置之间延伸，用于将气体输送到活塞室。 旁通通道被设置成使得通过旁通通道引入的气体对室施加压力并施加力以沿使第一壁向第二壁移动的方向移动活塞构件。 可能是来自发动机的废气的气体因此用于辅助致动器的操作。
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公开(公告)号：US20090142186A1
公开(公告)日：2009-06-04
申请号：US12322578
申请日：2009-02-04
CPC分类号： F01D17/143 , F01D17/167 , F05D2220/40
摘要： A variable geometry turbine comprises a turbine wheel supported in a housing for rotation about a turbine axis with an annular inlet passageway defined between a radial face of a nozzle ring and a facing wall of the housing. The nozzle ring is movable along the turbine axis to vary the width of the inlet passageway and of vanes that are received in corresponding slots in the facing wall. Each vane major surface such that at a predetermined axial position of the nozzle ring relative to the facing wall the recess is in axial alignment with the slot and affords an exhaust gas leakage path through the inlet passageway. The recess is configured to reduce the efficiency of the turbine at small inlet gaps appropriate to engine braking or exhaust gas heating modes.
摘要翻译： 可变几何涡轮机包括支撑在壳体中的涡轮机叶轮，用于围绕涡轮机轴线旋转，其具有限定在喷嘴环的径向面和壳体的相对壁之间的环形入口通道。 喷嘴环可沿着涡轮机轴线移动以改变入口通道和被接纳在相对的壁中的相应狭槽中的叶片的宽度。 每个叶片主表面使得在喷嘴环的相对于相对壁的预定轴向位置处，凹槽与槽对准，并且通过入口通道提供排气泄漏路径。 该凹部构造成在适合于发动机制动或排气加热模式的小入口间隙处降低涡轮机的效率。
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公开(公告)号：US06905316B2
公开(公告)日：2005-06-14
申请号：US09977804
申请日：2001-10-15
CPC分类号： F16C17/18 , F01D25/164 , F01D25/166 , F16C17/02 , F16C2360/24
摘要： A turbocharger in which a drive shaft supports at one end a turbine driven by exhaust gases from an internal combustion engine. The end of the drive shaft remote from the turbine supports a drive connection which is coupled to an output shaft of the driving engine. The shaft is supported in a housing by a first bearing adjacent the turbine and a second bearing adjacent the drive coupling. The first and second bearings each define an inner bearing surface relative to which the shaft rotates and an outer bearing surface which rotates relative to the housing. The first and second bearings are mechanically coupled together such that they rotate relative to the housing at the same speed. Coupling the two bearings together ensures that directional forces applied to the bearing at the end adjacent the drive connection which might cause that bearing to seize are resisted by torque delivered from the bearing at the other end of the shaft.
摘要翻译： 一种涡轮增压器，其中驱动轴在一端支撑由来自内燃机的废气驱动的涡轮机。 远离涡轮的驱动轴的端部支撑与驱动发动机的输出轴联接的驱动连接。 轴通过靠近涡轮机的第一轴承和邻近驱动联轴器的第二轴承支撑在壳体中。 第一和第二轴承各限定一个内轴承表面，相对于该轴旋转的内轴承表面和相对于壳体旋转的外轴承表面。 第一和第二轴承机械地联接在一起，使得它们以相同的速度相对于壳体旋转。 将两个轴承联接在一起确保了在与驱动连接相邻的端部处施加到可能导致轴承卡住的端部处的方向力受到在轴的另一端从轴承传递的扭矩的抵抗。
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公开(公告)号：US06652224B2
公开(公告)日：2003-11-25
申请号：US10117872
申请日：2002-04-08
申请人： John Mulloy , John Frederick Parker
发明人： John Mulloy , John Frederick Parker
IPC分类号： F01D1716
CPC分类号： F02B37/24 , F01D17/143 , F01D17/167 , Y02T10/144
摘要： A turbocharger variable geometry turbine of the type which includes nozzle vanes displaceable across the turbine inlet flow path into slots. The vanes have cut-outs which reduce the vane cord and permit peak turbine efficiency over a range of geometries.
摘要翻译： 一种涡轮增压器可变几何涡轮机，其包括能够穿过涡轮机入口流动路径进入狭槽的喷嘴叶片。 叶片具有减少叶片帘线的切口，并允许在几何尺寸范围内的峰值涡轮机效率。
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