Abstract: A compressor housing for a turbocharger and a method for manufacturing the same. The method includes steps of preparing a scroll piece having an intake port forming portion forming an intake port, an intake-side wall surface of a scroll chamber, and a scroll outer peripheral portion covering an outer peripheral side of the scroll chamber; preparing a shroud piece having a cylindrical shroud press-fit portion to be press fitted into the intake port forming portion, an inner circumferential wall surface of the scroll chamber, and a recessed portion formed on a wall surface covering an outer peripheral side of an impeller; forming an abradable seal having a shroud surface by injection molding of resin into the recessed portion; and press fitting the shroud press-fit portion into the intake port forming portion.

Abstract: A turbocharger 1 includes a compressor housing 2 and a bearing housing 3. The compressor housing 2 has a shroud surface 221 and a diffuser surface 222. The bearing housing 3 has an opposite surface 311 facing the diffuser surface 222. An adhesion preventing part 4 is provided on at least one of the diffuser surface 222 and the opposite surface 311. The turbocharger 1 is configured so that compressed air spouts out from the adhesion preventing part 4 to the diffuser passage 15 by an ejector effect caused when compressed air passes through the diffuser passage 15.

Abstract: In a compressor (11) of a turbocharger (1), a compressor wheel (14) is provided in a housing (12) to be capable of rotating. When the wheel (14) rotates, air suctioned through an inlet of the housing (12) is compressed and then discharged through an outlet of the housing (12). Further, an abradable seal layer (16) formed on an inner surface of the housing (12) is abraded by a vane (13) of the rotating wheel (14) such that a tip clearance between the vane (13) and a part of the inner surface of the housing (12) that opposes the vane (13) is adjusted. A corner portion (13a) of the vane (13) on the outlet side of the housing (12) is shaped to move gradually further away from a shroud curve (Lc) of the seal layer (16) toward an end portion of the vane (13) on the outlet side of the housing (12).

Abstract: A compressor housing of a supercharger includes: a housing body housing an impeller therein, and having an inner circumferential recess in a recessed shape on an annular inner circumferential surface along an outer circumference of the impeller; and a sliding member in an annular shape disposed in the inner circumferential recess, an inner circumferential surface of the sliding member having a shroud surface that faces the impeller. The housing body includes a diffuser surface that is disposed circumferentially outward of the shroud surface in a manner as to be continued to the shroud surface. Joint portions in which the housing body and the sliding member are joined through a friction stir welding are provided at a boundary between an outer circumferential end of the sliding member and an inner circumferential end of the diffuser surface of the housing body.

Abstract: In a compressor housing, a scroll piece includes a cylindrical intake port forming section, a scroll wall surface forming section that forms an air-intake side wall surface of a discharge scroll chamber, and a scroll outer circumferential section that covers an outer circumferential side of the discharge scroll chamber. A shroud piece of the housing includes a cylindrical shroud press fitted section press fitted into the intake port forming section, and a shroud wall surface forming section that forms an inner circumferential side wall surface of the discharge scroll chamber and also forms a shroud surface that opposes an impeller and a diffuser surface. An outer circumferential annular piece of the housing includes an outer circumferential annular press fitted section press fitted inside the scroll outer circumferential section, and an outer circumferential annular wall surface forming section that forms an outer circumferential side wall surface of the discharge scroll chamber.

Abstract: A compressor housing includes an intake port, a scroll, and a shroud. The shroud includes a shroud surface facing the impeller, a sliding member in an annular shape, and a sliding-member fixing portion in an annular shape. An inner circumferential surface of the sliding member defines the shroud surface. The sliding-member fixing portion includes contact portions that are configured to such that an inner circumferential surface of the sliding-member fixing portion and an outer circumferential surface of the sliding member at least partially come into contact with each other. The sliding member is fastened to the sliding-member fixing portion at the contact portions by the fastening members. The sliding member is fastened by the fastening members configured to extend through the sliding-member fixing portion. The fastening members are fastened from an outer circumferential surface of the sliding-member fixing portion to the sliding member.

Abstract: A turbocharger includes a compressor housing, a bearing housing and a back plate. A discharge scroll chamber has such a shape that a cross-sectional area thereof gradually increases toward a discharge port in a circumferential direction. The compressor housing includes a scroll piece assembled to a shroud piece. The scroll piece includes a suction port-forming portion, a suction-side concave surface and a scroll outer periphery. The shroud piece includes a shroud fit-in portion, an inner peripheral concave surface, a shroud surface and a diffuser surface. The back plate includes a facing surface, an outer peripheral annular fit-in portion and an outer peripheral concave surface. The outer peripheral concave surface has such a shape that a cross sectional shape thereof formed by a plane including a rotation axis of an impeller gradually changes in the circumferential direction.

Abstract: A compressor housing is provided with a shroud member, which surrounds a compressor impeller, and a sealing member. The shroud member has a facing surface that is located at a position on a radially outside of the compressor impeller on an inner circumferential surface of the shroud member. The sealing member is provided on the facing surface. The sealing member is formed from a cylindrical material that has free-cutting property to the compressor impeller. The sealing member is press-fitted into the facing surface of the shroud member.

Abstract: A turbocharging system for use with an internal combustion engine, which includes an exhaust gas feeding passage configured to feed exhaust gas of an internal combustion engine to a turbine unit; an exhaust gas passage configured to release the exhaust gas discharged from the turbine unit outside of the turbocharging system; an intake air passage configured to feed intake air into the compressor unit; a compressed air passage configured to feed compressed air discharged from the compressor unit to the internal combustion engine; an intercooler configured to cool the compressed air flowing through the compressed air passage; and an LPL-EGR passage configured to recirculate at least a part of the exhaust gas flowing through the exhaust gas passage, into the intake air passage, wherein the compressed air passage is provided with a cyclone-type collecting device arranged upstream of the intercooler to collect foreign substances contained in the compressed air.

Abstract: A compressor structure for turbochargers 1 including a scroll piece 20, a shroud piece 30 and a seal plate 40 assembled with each other in an axial direction, wherein the scroll piece 20 includes a penetration part 22 penetrating in the axial direction so as to constitute a discharge port 13 and a first intermediate wall surface 23 smoothly extending from an intake-side wall surface 21 to the discharge port 13, the shroud piece 30 includes an inner circumferential side wall surface 32, and the seal plate 40 includes a protruding part 42 provided with a second intermediate wall surface 43 extending from an outer circumferential side wall surface 41 and facing the first intermediate wall surface 23 so as to constitute an inner wall surface 14a of an intermediate part 14 through which the discharge port 13 and the scroll chamber 12 are communicated with each other.

Abstract: The present invention provides a turbocharger that prevents a seizure of a shaft member, prevents a leakage of exhaust gas, suppresses deterioration of components, and reduces a number of components. The turbocharger includes a waste gate valve which is connected to the shaft member rotatably supported by penetrating a support hole of the turbine housing. The waste gate valve includes an inclined surface formed at a portion facing an opening of a bypass passage. When the waste gate valve is opened, exhaust gas flown into the bypass passage presses the inclined surface, thrust force is applied to the shaft member in a shaft direction, and a seal contact portion is pressed against a peripheral edge of the support hole via a seal member.

Abstract: A turbine housing includes an outer housing member, which has a proximal housing portion and a distal housing portion, and an inner housing member, which is provided inside the outer housing member and has a shroud surface that faces a turbine wheel in an axial direction. A distal portion of the inner housing member serves as a slide portion slidable in the axial direction. Further, a proximal portion of the inner housing member is fixed to the proximal housing portion at a part closer to a distal side than a proximal portion of the proximal housing portion. Further, a scroll portion is formed by the inner housing member and a proximal scroll portion of the proximal housing portion located closer to a proximal side than the inner housing member.

Abstract: A turbocharger includes: a turbine wheel that is driven by exhaust gas from an engine and supported rotatably by a predetermined rotary shaft; and a turbine housing that forms an exhaust gas passage that leads the exhaust gas to the turbine wheel, wherein the turbine housing includes a housing main body constituted by a plate-form member and a reinforcement member that forms the exhaust gas passage together with the housing main body and reinforces the housing main body, the reinforcement member includes a pair of annular portions having a substantially annular shape and provided about an axial center of the rotary shaft at an interval in an axial direction of the rotary shaft, and a connecting portion that connects the pair of annular portions, and the pair of annular portions and the connecting portion are molded integrally by implementing deformation processing on the plate-form member.

Abstract: A turbocharger includes a compressor housing and a bearing housing. The compressor housing includes a diffuser surface, and the bearing housing includes an opposite surface. An adhesion preventing part is disposed on each of the diffuser surface and the opposite surface. The adhesion preventing part is provided with a surface forming part and a tank part and is configured so that air is ejected through the ejection holes of the surface forming part to a diffuser passage. An air supply passage is formed in the compressor housing and the bearing housing. At least one of the compressor housing and the bearing housing includes a depurant injection port for supplying a depurant having compatibility with deposits to the tank part through the air supply passage.

Abstract: A second recirculation passage recirculates blow-by gas at an upstream section, which is upstream of an impeller of a turbocharger in an intake passage. A first passage branches and extends from a downstream section, which is downstream of the impeller in the intake passage. A second passage that forms part of the second recirculation passage connects the first passage and the upstream section to each other. A third passage, which is provided separately from the second passage, connects the first passage and the upstream section to each other. A change mechanism changes, in different manners, the flow rate of compressed gas recirculating to the upstream section through the second passage, and the flow rate of compressed gas recirculating to the upstream section through the third passage.

Abstract: Disclosed is a liver function-protecting agent which comprises a phospholipid as an active ingredient, and which can exhibit an excellent prophylactic and ameliorating effect on the deterioration in the liver function when ingested orally. Also disclosed is a liver function-protecting food, beverage or feed. The phospholipid is preferably one derived from milk or a milk material. Alternatively, the phospholipid may be used in the form of a phospholipid-containing composition prepared from milk or a milk material and containing the phospholipid in an amount of 10 wt % or more relative to the total solid content.

Abstract: A turbocharger 1 includes a compressor housing 2 and a bearing housing 3. The compressor housing 2 has a shroud surface 221 and a diffuser surface 222. The bearing housing 3 has an opposite surface 311 facing the diffuser surface 222. An adhesion preventing part 4 is provided on at least one of the diffuser surface 222 and the opposite surface 311. The turbocharger 1 is configured so that compressed air spouts out from the adhesion preventing part 4 to the diffuser passage 15 by an ejector effect caused when compressed air passes through the diffuser passage 15.

Abstract: The present invention provides a turbocharger that prevents a seizure of a shaft member, prevents a leakage of exhaust gas, suppresses deterioration of components, and reduces a number of components. The turbocharger includes a waste gate valve which is connected to the shaft member rotatably supported by penetrating a support hole of the turbine housing. The waste gate valve includes an inclined surface formed at a portion facing an opening of a bypass passage. When the waste gate valve is opened, exhaust gas flown into the bypass passage presses the inclined surface, thrust force is applied to the shaft member in a shaft direction, and a seal contact portion is pressed against a peripheral edge of the support hole via a seal member.

Abstract: A compressor housing is provided with a shroud member, which surrounds a compressor impeller, and a sealing member. The shroud member has a facing surface that is located at a position on a radially outside of the compressor impeller on an inner circumferential surface of the shroud member. The sealing member is provided on the facing surface. The sealing member is formed from a cylindrical material that has free-cutting property to the compressor impeller. The sealing member is press-fitted into the facing surface of the shroud member.

Abstract: A turbine housing includes an outer housing member, which has a proximal housing portion and a distal housing portion, and an inner housing member, which is provided inside the outer housing member and has a shroud surface that faces a turbine wheel in an axial direction. A distal portion of the inner housing member serves as a slide portion slidable in the axial direction. Further, a proximal portion of the inner housing member is fixed to the proximal housing portion at a part closer to a distal side than a proximal portion of the proximal housing portion. Further, a scroll portion is formed by the inner housing member and a proximal scroll portion of the proximal housing portion located closer to a proximal side than the inner housing member.