# US 10,502,219 B2 · Supercharging device for a combustion engine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,219 B2 - Document ID: US10502219B2 - Status: Granted - Kind: B2 - Application number: 15/038,751 - Filed: 2014-11-19 - Published: 2017-02-02 - Granted: 2019-12-10 - Earliest claimed: 2013-11-29 - Assignees: BorgWarner Inc. - Applicants: BorgWarner Inc. - Inventors: Alessio Scheri - Web page: https://patentgrep.com/patent/US10502219B2 ## CPC - F04D 27/009: {by bleeding, by passing or recycling fluid} - F02B 33/40: of non-positive-displacement type - F02B 37/013: with exhaust-driven pumps arranged in series - F02B 37/162: {by bypassing, e.g. partially, intake air from pump inlet to pump outlet} - F02B 39/10: electric - F04D 29/4253: {with axial entry and discharge} - F02B 37/004: {with exhaust drives arranged in series} - F04D 17/10: for compressing or evacuating - Y02T 10/12: Improving ICE efficiencies - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A supercharging device (20), having: a housing (21) which has a longitudinal axis (L); at least one housing inlet (1) which leads into the housing (21); at least one housing outlet (2) which leads out of the housing (21); at least one compressor wheel (5) which is arranged in a compressor chamber (15) and which is driven by a motor shaft (16) and which is arranged between the housing inlet (1) and the housing outlet (2) of the housing (21) as viewed in the flow direction, and at least one bypass duct (17) which is integrated in the housing (21) and which connects the housing inlet (1) to the housing outlet (2) so as to bypass the compressor chamber (15). The bypass duct (17) has a self-adjusting valve (22). The housing inlet (1) and the housing outlet (2) are formed as an axial inlet and an axial outlet respectively. ## Claims ### Claim 1 A supercharging device (20), having a supercharger housing (21) which has a longitudinal axis (L); at least one supercharger housing inlet (1) which leads into the supercharger housing (21); at least one supercharger housing outlet (2) which leads out of the supercharger housing (21); at least one compressor wheel (5) which is arranged in a compressor chamber (15) in a compressor housing (18) and which is driven by a motor shaft (16) and which is arranged between the supercharger housing inlet (1) and the supercharger housing outlet (2) of the supercharger housing (21) as viewed in the flow direction, and an annular bypass duct (17) which is integrated in the supercharger housing (21) and surrounds the compressor housing (18) and which connects the supercharger housing inlet (1) to the supercharger housing outlet (2) so as to bypass the compressor chamber (15), the bypass duct (17) having a valve (22), wherein the supercharger housing inlet (1) and the supercharger housing outlet (2) are formed as an axial inlet and an axial outlet respectively, and a guide pin (7) is provided which is fixed to the compressor housing (18) by way of a compressor housing fin arrangement (6A to 6D). ### Claim 2 (depends on 1) The supercharging device as claimed in claim 1, wherein the valve (22) has a valve body (8) which is guided movably along the longitudinal axis (L) and which is preloaded into a closed position by a spring (11). ### Claim 3 (depends on 2) The supercharging device as claimed in claim 2, wherein the valve body (8) is arranged on a guide (19) which is part of the compressor housing (18) which is arranged in the supercharger housing (21). ### Claim 4 (depends on 2) The supercharging device as claimed in claim 2, wherein the valve body (8) has a valve body seal (13) which, in the closed position of the bypass duct (17), bears against an inner wall surface region (23) of the supercharger housing (21). ### Claim 5 (depends on 2) The supercharging device as claimed in claim 2, wherein the valve body (8) is arranged, by way of a foot fin arrangement (9A to 9D) running in a radial direction (R), on a foot part (10) of the valve (22). ### Claim 6 (depends on 1) The supercharging device as claimed in claim 1, wherein the valve body (8) is arranged, by way of a foot fin arrangement (9A to 9D) running in a radial direction (R), on a foot part (10) of the valve (22), and wherein the foot part (10) is guided in slidingly movable fashion on the guide pin (7). ### Claim 7 (depends on 1) The supercharging device as claimed in claim 1, wherein the valve body (8) is arranged, by way of a foot fin arrangement (9A to 9D) running in a radial direction (R), on a foot part (10) of the valve (22), and wherein the foot part (10) is guided on the guide pin (7) by way of a bushing (14). ### Claim 8 (depends on 1) The supercharging device as claimed in claim 1, wherein the compressor wheel (5) is connected in terms of drive via the motor shaft (16) to an electric motor. ### Claim 9 (depends on 1) The supercharging device as claimed in claim 1, wherein the valve (22) is a self-adjusting valve. ### Claim 10 (depends on 1) The supercharging device as claimed in claim 1, wherein the valve (22) is an active valve. ### Claim 11 A supercharging device (20), having a supercharger housing (21) which has a longitudinal axis (L); at least one supercharger housing inlet (1) which leads into the supercharger housing (21); at least one supercharger housing outlet (2) which leads out of the supercharger housing (21); at least one compressor wheel (5) which is arranged in a compressor chamber (15) and which is driven by a motor shaft (16) and which is arranged between the supercharger housing inlet (1) and the supercharger housing outlet (2) of the supercharger housing (21) as viewed in the flow direction, and at least one bypass duct (17) which is integrated in the supercharger housing (21) and which connects the supercharger housing inlet (1) to the supercharger housing outlet (2) so as to bypass the compressor chamber (15), the bypass duct (17) having a valve (22), wherein the supercharger housing inlet (1) and the supercharger housing outlet (2) are formed as an axial inlet and an axial outlet respectively, the valve (22) has a valve body (8) which is guided movably along the longitudinal axis (L) and which is preloaded into a closed position by a spring (11), the valve body (8) is arranged on a guide (19) which is part of a compressor housing (18) which is arranged in the supercharger housing (21), and a valve guide seal (12) is provided which is arranged on the guide (19) and which bears against an inner wall (24) of a guide recess (25) of the valve body (8).