公开(公告)号：US20150315961A1

公开(公告)日：2015-11-05

申请号：US14653967

申请日：2013-12-02

Applicant: BORGWARNER INC.

Inventor： Gregory D. Uhlenhake

IPC: F02B37/12 ,  F02B39/08

CPC classification number: F02B37/12 ,  F02B37/183 ,  F02B39/08 ,  F02B2037/122 ,  Y02T10/144

Abstract: A turbocharger (100) has an asymmetric, twin scroll volute design, having a first volute (101) and a larger second volute (102). The larger second volute (102) eliminates the need for a wastegate and its associated actuator. The smaller first volute (101) is sized for rapid transients and rated torque, while the second volute (102) is sized such that the turbine inlet pressure is satisfactory for rated power. Furthermore, the turbocharger (100) preferably incorporates a mixed flow turbine wheel (108) rather than a radial wheel, which allows for a larger wheel size to be used while still maintaining inertia. The turbine housing (103) is improved wherein the first and second volutes (101) and (102) are asymmetric with respect to each other and preferably, are leaned toward the bearing housing to match the axial component of the mixed flow turbine wheel inducer (112).

Abstract translation: 涡轮增压器（100）具有不对称双涡旋蜗壳设计，具有第一蜗壳（101）和较大的第二蜗壳（102）。 较大的第二个蜗壳（102）消除了废气门及其相关致动器的需要。 较小的第一蜗壳（101）的尺寸适用于快速瞬变和额定扭矩，而第二蜗壳（102）的尺寸使得涡轮机入口压力对于额定功率是令人满意的。 此外，涡轮增压器（100）优选地包括混合流动涡轮机叶轮（108）而不是径向轮，其允许在仍然保持惯性的同时使用较大的车轮尺寸。 涡轮机壳体（103）被改进，其中第一和第二蜗壳（101）和（102）相对于彼此是不对称的，并且优选地朝着轴承壳体倾斜以匹配混合涡轮机叶轮诱导器（的轴向分量） 112）。

公开(公告)号：US10006345B2

公开(公告)日：2018-06-26

申请号：US14653967

申请日：2013-12-02

Applicant: BorgWarner Inc.

Inventor： Gregory D. Uhlenhake

IPC: F02B37/12 ,  F02B39/08 ,  F02B37/18

CPC classification number: F02B37/12 ,  F02B37/183 ,  F02B39/08 ,  F02B2037/122 ,  Y02T10/144

Abstract: A turbocharger (100) has an asymmetric, twin scroll volute design, having a first volute (101) and a larger second volute (102). The larger second volute (102) eliminates the need for a wastegate and its associated actuator. The smaller first volute (101) is sized for rapid transients and rated torque, while the second volute (102) is sized such that the turbine inlet pressure is satisfactory for rated power. Furthermore, the turbocharger (100) preferably incorporates a mixed flow turbine wheel (108) rather than a radial wheel, which allows for a larger wheel size to be used while still maintaining inertia. The turbine housing (103) is improved wherein the first and second volutes (101) and (102) are asymmetric with respect to each other and preferably, are leaned toward the bearing housing to match the axial component of the mixed flow turbine wheel inducer (112).