IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0955104
(2015-12-01)
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등록번호 |
US-10227915
(2019-03-12)
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발명자
/ 주소 |
- Murphy, Michael
- Chandramohanan, Rajmohan
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
A turbocharger turbine (2) includes a wastegate subassembly (50) that includes a mounting plate (51) having a bore (55) therethrough, a valve shaft (60) disposed in the bore (55), and a wastegate valve (30) including a valve body (31) and a valve arm (36) that secures the valve body (31) to an end o
A turbocharger turbine (2) includes a wastegate subassembly (50) that includes a mounting plate (51) having a bore (55) therethrough, a valve shaft (60) disposed in the bore (55), and a wastegate valve (30) including a valve body (31) and a valve arm (36) that secures the valve body (31) to an end of the valve shaft (60). The wastegate subassembly (50) is preassembled prior to assembly with the turbocharger (1), and is detachably secured to an outer surface of the turbine exhaust gas inlet (10) such that valve body (31) is positioned to control exhaust gas flow through a bypass port (13) that extends between the exhaust gas inlet (10) and an exhaust gas outlet (12), and bypasses the turbine wheel (16).
대표청구항
▼
1. A wastegate subassembly (50) comprising a mounting plate (51) comprising a mounting surface (52), an outer surface (53) that is opposed to the mounting surface (52) and a bore (55) that opens at both the mounting surface (52) and the outer surface (53), a valve shaft (60) disposed in the bore (55
1. A wastegate subassembly (50) comprising a mounting plate (51) comprising a mounting surface (52), an outer surface (53) that is opposed to the mounting surface (52) and a bore (55) that opens at both the mounting surface (52) and the outer surface (53), a valve shaft (60) disposed in the bore (55) such that a first end (61) of the valve shaft (60) resides outside the bore (55) on a mounting surface-side (52) of the mounting plate (51), and a second end (62) of the valve shaft (60) resides outside the bore (55) on an outer surface-side (53) of the mounting plate (51); anda wastegate valve (30) including a valve body (31) and a valve arm (36) that secures the valve body (31) to the first end (61) of the valve shaft (60);wherein the mounting plate (51) is configured to be selectively connected to and detached from a turbocharger (1) housing. 2. The wastegate subassembly (50) of claim 1, wherein the mounting plate (51) is planar, has a rectangular peripheral shape, and includes bolt openings (56) configured to receive a fastener that secures the mounting plate (51) to a housing of a turbocharger turbine (2). 3. The wastegate subassembly (50) of claim 1, wherein the valve body (31) comprises a planar valve face (32), and protruding stem (33) on a side opposed to the valve face (32). 4. The wastegate subassembly (50) of claim 1, wherein the valve arm (36) comprises a plate portion (37) that is connected to the valve body (31), and a hollow cylindrical portion (40) disposed at one end (37) of the plate portion (37), the cylindrical portion (40) configured to receive the valve shaft (60) therein and disposed at one end (37) of the plate portion (37) such that a longitudinal axis (43) of the cylindrical portion (40) is parallel to a broad surface (39) of the plate portion (37). 5. The wastegate subassembly (50) of claim 4, wherein the plate portion (37) includes a plate through opening (38) that receives a portion of the valve body (31),the cylindrical portion (40) includes a first open end (44), a second open end (45), and a central opening (46) disposed between the first open end (44) and the second open end (45), and the plate through opening (38) is axially offset relative to the central opening (46). 6. The wastegate subassembly (50) of claim 1, comprising a bushing (68) disposed in the bore (55), the bushing (68) configured to support the valve shaft (60) for rotation within the bore (55). 7. The wastegate subassembly of claim 1, comprising a link arm (70) fixed to the second end (62) of the valve shaft (60), the link arm (70) configured to connect the valve shaft (60) to an actuator (29). 8. A turbocharger (1) comprising a turbine housing (8) defining an exhaust gas inlet (10), an exhaust gas outlet (12) and a volute (14) that connects the exhaust gas inlet (10) to the exhaust gas outlet (12), a turbine wheel (16) disposed in the exhaust gas inlet (10) between the volute (14) and the exhaust gas outlet (12),a bypass port (13) is formed in the exhaust gas inlet (10) that communicates with the exhaust gas outlet (12) and bypasses the turbine wheel (16),a second port (17) formed in the exhaust gas inlet (10) in the vicinity of the bypass port (13), anda wastegate subassembly (50) comprising a mounting plate (51) comprising a mounting surface (52), an outer surface (53) that is opposed to the mounting surface (52) and a bore (55) that opens at both the mounting surface (52) and the outer surface (53),a valve shaft (60) disposed in the bore (55) such that a first end (61) of the valve shaft (60) resides outside the bore (55) on a mounting surface-side (52) of the mounting plate (51), and a second end (62) of the valve shaft (60) resides outside the bore (55) on an outer surface-side (53) of the mounting plate (51); anda wastegate valve (30) including a valve body (31) and a valve arm (36) that secures the valve body (31) to the first end (61) of the valve shaft (60),wherein the mounting plate (51) is detachably secured to an outer surface of the exhaust gas inlet (10) such that the mounting plate (51) closes the second port (17) and the valve body (31) is positioned to control exhaust gas flow through the bypass port (13). 9. The turbocharger (1) of claim 8, wherein the turbine housing (8) is formed of a first material, and the mounting plate (51) is formed of a second material, wherein the second material different from the first material. 10. The turbocharger (1) of claim 8, comprising a bushing (68) disposed in the bore (55), the bushing (68) configured to support the valve shaft (60) for rotation within the bore (55). 11. The turbocharger (1) of claim 8, comprising a link arm (70) fixed to the second end (62) of the valve shaft (60), the link arm (70) configured to connect the valve shaft (60) to an actuator (29). 12. The turbocharger (1) of claim 8, wherein the mounting plate (51) is planar, has a rectangular peripheral shape, and includes bolt openings (56) configured to receive a fastener (57) that secures the mounting plate (51) to a housing of a turbocharger turbine (2). 13. The turbocharger (1) of claim 8, wherein the valve arm (36) comprises a plate portion (37) that is connected to the valve body (31), and a hollow cylindrical portion (40) disposed at one end (37) of the plate portion (37), the cylindrical portion (40) configured to receive the valve shaft (60) therein and disposed at one end (37) of the plate portion (37) such that a longitudinal axis (43) of the cylindrical portion (40) is parallel to a broad surface (39) of the plate portion (37). 14. The turbocharger (1) of claim 13, wherein the plate portion (37) includes a plate through opening (38) that is fixed to a portion of the valve body (31),the cylindrical portion (40) includes a first open end (44), a second open end (45), and a central opening (46) disposed between the first open end (44) and the second open end (45), the plate through opening (38) is axially offset relative to the central opening (46). 15. A method of assembling a wastegate valve (30) with an exhaust gas inlet (10) of a turbocharger turbine (2) such that the wastegate valve (30) controls the flow of exhaust gas through a bypass port (13) formed in the exhaust gas inlet (10), the method comprising providing a pre-assembled wastegate subassembly (50) that includes a mounting plate (51) comprising a mounting surface (52), an outer surface (53) that is opposed to the mounting surface (52) and a bore (55) that opens at both the mounting surface (52) and the outer surface (53),a valve shaft (60) disposed in the bore (55) such that a first end (61) of the valve shaft (60) resides outside the bore (55) on a mounting surface-side (52) of the mounting plate (51), and a second end (62) of the valve shaft (60) resides outside the bore (55) on an outer surface-side (53) of the mounting plate (51); anda wastegate valve (30) including a valve body (31) and a valve arm (36) that secures the valve body (31) to the first end (61) of the valve shaft (60);inserting the first end (61) of the valve shaft (60) through a second port (17) formed in the exhaust gas inlet (10) such that the wastegate valve (30) is disposed adjacent the bypass port (13) and the mounting plate (51) abuts an outer surface of the exhaust gas inlet (10), and securing the mounting plate (51) to the outer surface (53) of the exhaust gas inlet (10).
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