Turbocharger bearing housing with integrated heat shield
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04D-029/58
F02B-039/14
F01D-025/18
F01D-025/16
F02C-006/12
F04D-029/40
출원번호
US-0387921
(2013-03-22)
등록번호
US-9797409
(2017-10-24)
국제출원번호
PCT/US2013/033418
(2013-03-22)
국제공개번호
WO2013/148486
(2013-10-03)
발명자
/ 주소
Bucking, Michael
Ward, Daniel N.
출원인 / 주소
BorgWarner Inc.
대리인 / 주소
BrooksGroup
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
A system and method is provided in which a turbocharger includes a heat shield wall that is formed together with the bearing housing as a unitary structure. The wall can extend from a main body portion of the bearing housing in a generally radially outward direction. The wall can be spaced from the
A system and method is provided in which a turbocharger includes a heat shield wall that is formed together with the bearing housing as a unitary structure. The wall can extend from a main body portion of the bearing housing in a generally radially outward direction. The wall can be spaced from the main body and attached by a plurality of ribs such that chambers are defined therebetween. A circumferential passage can extend through the bearing housing to permit fluid communication between the chambers and outside of the bearing housing. In this way, a fluid outlet from the chambers is provided. As a result of such an arrangement, the need for a separate heat shield is eliminated, which can facilitate the assembly process and special attachment methods associated with a separate heat shield.
대표청구항▼
1. A bearing housing (52) for a turbocharger comprising: a main body (53);a radially outwardly extending heat shield wall (50), the heat shield wall (50) and the main body (53) being formed together as a unitary structure and connected by a plurality of ribs (70), the heat shield wall (50) being spa
1. A bearing housing (52) for a turbocharger comprising: a main body (53);a radially outwardly extending heat shield wall (50), the heat shield wall (50) and the main body (53) being formed together as a unitary structure and connected by a plurality of ribs (70), the heat shield wall (50) being spaced from the main body (53) such that a plurality of chambers (72) are formed, each chamber (72) being at least partly defined by the heat shield wall (50), the main body (53) and neighboring pairs of ribs (70); andat least one passage (86) extending through the bearing housing (52) to permit fluid communication between the plurality of chambers (72) and outside of the bearing housing (52), whereby an exit from the plurality of chambers (72) is provided. 2. The bearing housing of claim 1, wherein the heat shield wall (50) is connected to the main body (53) exclusively by the plurality of ribs (70). 3. The bearing housing of claim 1, wherein the plurality of ribs (70) are substantially equally spaced. 4. The bearing housing of claim 1, wherein the at least one passage (86) is a circumferential slot. 5. The bearing housing of claim 1, wherein the at least one passage (86) extends substantially perpendicular to an axis (54) of a shaft bore (55) in the bearing housing (52). 6. The bearing housing of claim 1, wherein the at least one passage (86) extends substantially parallel to an axis (54) of a shaft bore (55) in the bearing housing (52). 7. The bearing housing of claim 1, wherein the heat shield wall (50) has an associated thickness, wherein the thickness of the heat shield wall (50) increases from a radially inner end region (62) to a radially outer end region (64) thereof. 8. The bearing housing of claim 1, wherein the at least one passage (86) is formed in a radially inner end region (62) of the heat shield wall (50). 9. A turbocharger system comprising: a bearing housing (52) having a main body (53) with a shaft bore (55) for receiving a rotatable shaft therein, the shaft bore (55) having an associated longitudinal axis (54), the bearing housing (52) further including a radially outwardly extending heat shield wall (50), the heat shield wall (50) and the main body (53) being formed together as a unitary structure and connected by a plurality of ribs (70), the heat shield wall (50) being spaced from the main body (53) such that a plurality of chambers (72) are formed, each chamber (72) being at least partly defined by the heat shield wall (50), the main body (53) and neighboring pairs of ribs (70); anda shaft (56), at least a portion of the shaft (56) being rotatably received within the shaft bore (55);a turbine wheel (84) being provided at one end of the shaft (56), the turbine wheel (84) including a backface (82), the heat shield wall (50) being disposed between the main body (53) and the backface (82) of the turbine wheel (84) such that a volume (80) is at least partially defined between the heat shield wall (50) and the backface (82); andat least one passage (86) extending through the bearing housing (52) to permit fluid communication between the plurality of chambers (72) and the volume (80), whereby an exit from the plurality of chambers (72) is provided. 10. The turbocharger system of claim 9, wherein the heat shield wall (50) is connected to the main body (53) exclusively by the plurality of ribs (70). 11. The turbocharger system of claim 9, wherein the plurality of ribs (70) are substantially equally spaced. 12. The turbocharger system of claim 9, wherein the at least one passage (86) is a circumferential slot. 13. The turbocharger system of claim 9, wherein an entry to the plurality of chambers (72) is defined between an outer peripheral surface (66) of the heat shield wall (50) and a portion of a stationary structure of a turbine housing (18). 14. A method of forming a bearing housing for a turbocharger comprising: casting a bearing housing (52) having a main body (53) and a radially outwardly extending heat shield wall (50), whereby the main body (53) and the heat shield wall (50) are a unitary structure and connected by a plurality of ribs (70), the heat shield wall (50) being spaced from the main body (53) such that a plurality of chambers (72) are formed, each chamber (72) being at least partly defined by the heat shield wall (50), the main body (53), and neighboring pairs of ribs (70). 15. The method of claim 14, further including: forming at least one passage (86) in the bearing housing (52) to permit fluid communication between the plurality of chambers (72) and outside of the bearing housing (52), whereby an exit from the plurality of chambers (72) is provided.
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이 특허에 인용된 특허 (11)
Gordon ; Jr. ; Phillip B. ; Hunt ; Keats E., Ebullient cooled turbocharger bearing housing.
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