Abstract: In one embodiment, a semiconductor storage device includes a lower electrode layer, a lower insulator, an upper electrode layer and an upper insulator along a first direction. The device further includes a first insulator provided on a side of a second direction of the upper electrode layer, and a second insulator provided between the upper electrode layer and the lower/upper/first insulator. The device further includes a charge storage layer, a third insulator and a semiconductor layer sequentially provided on a side of the second direction of the first insulator. A side face of the first insulator on a side of the upper electrode layer has a convex shape, the charge storage layer includes a first portion having a first thickness, and a second portion having a second thickness less than the first thickness, and the first portion is in contact with the first insulator.

Abstract: A compressor housing for a turbocharger dividably composed of a plurality of pieces including a scroll piece, and a shroud piece. The scroll piece and the shroud piece are assembled to each other by press-fitting a press-fitting portion of the shroud piece into a press-fitted portion of the scroll piece. Pressure-contacting portions that are provided on either one of the scroll piece and the shroud piece are pressure-contacted with pressure-contacted portions that are provided on the other one of the scroll piece and the shroud piece, respectively. As a result, the pressure-contacting portions plastically flow to form seal parts for sealing the scroll piece and the shroud piece, respectively.

Abstract: A compressor housing for a turbocharger dividably composed of a plurality of pieces including a scroll piece and a shroud piece. The scroll piece and the shroud piece are assembled to each other by press-fitting a press-fitting portion of the shroud piece into a press-fitted portion of the scroll piece in an axial direction. A pressure-contacting portion provided on either one of the scroll piece and the shroud piece is pressure-contacted with a pressure-contacted portion provided on the other one of the scroll piece and the shroud piece in the axial direction to thereby cause plastic flow to both portions, so that a plastic flow portion is annularly formed. Thus, the scroll piece and the shroud piece are sealed to each other.

Abstract: A compressor housing for a turbocharger dividably composed of a plurality of pieces including a scroll piece and a shroud piece. The scroll piece and the shroud piece are assembled to each other by press-fitting a press-fitting portion of the shroud piece into a press-fitted portion of the scroll piece in an axial direction. A pressure-contacting portion provided on either one of the scroll piece and the shroud piece is pressure-contacted with a pressure-contacted portion provided on the other one of the scroll piece and the shroud piece in the axial direction to thereby cause plastic flow to both portions, so that a plastic flow portion is annularly formed. Thus, the scroll piece and the shroud piece are sealed to each other.

Abstract: A compressor housing for a turbocharger, which is composed of a scroll piece, a shroud piece, and an outer-circumferential annular piece. The scroll piece includes a through part constituting a discharge port, a first intermediate wall surface extended from an intake-side wall surface of a scroll chamber and smoothly connected with the discharge port, and a scroll outer-circumferential part. The outer-circumferential annular piece includes an outer-circumferential annular press-fit part press fitted into the scroll outer-circumferential part, and a protruding part bent from an outer-circumference-side wall surface of the scroll chamber. The protruding part is inserted into the through part to form an inner wall surface of an intermediate part that communicates the discharge port with the scroll chamber. Then, the compressor housing is fixed to a center housing that is made of iron with high rigidity through joining parts provided at the scroll piece.

Abstract: A housing for a turbocharger that makes it possible to prevent sticking of deposit and attain satisfactory assembling workability and easy moldability by die casting. The housing dividably includes a scroll piece and a shroud piece, including an annular refrigerant flow path defined by a first flow-path formation part of the scroll piece and a second flow-path formation part of the shroud piece. The first and second flow path formation parts are fitted with each other at inner and outer circumferential seal parts for sealing the refrigerant flow path on inner and outer circumferential sides thereof. The inner circumferential seal part is formed by press-fitting a first press-fitting portion of the shroud piece into a first press-fitted portion of the scroll piece. The outer circumferential seal part is formed by press-fitting a second press-fitting portion of the shroud piece into a second press-fitted portion of the scroll piece.

Abstract: A compressor housing for a turbocharger dividably composed of a plurality of pieces including a scroll piece, and a shroud piece. The scroll piece and the shroud piece are assembled to each other by press-fitting a press-fitting portion of the shroud piece into a press-fitted portion of the scroll piece. Pressure-contacting portions that are provided on either one of the scroll piece and the shroud piece are pressure-contacted with pressure-contacted portions that are provided on the other one of the scroll piece and the shroud piece, respectively. As a result, the pressure-contacting portions plastically flow to form seal parts for sealing the scroll piece and the shroud piece, respectively.

Abstract: A compressor housing for a turbocharger including a refrigerant flow path and a recirculation part, which is dividably composed of a scroll piece and a shroud piece. The refrigerant flow path is formed as an annular space that is defined by a first flow-path formation part of the scroll piece and a second flow-path formation part of the shroud piece that are fitted with each other. In the refrigerant flow path, a first press-fitting portion of the shroud piece is press-fitted into a first press-fitted portion of the scroll piece to form an inner circumferential seal part, and a second press-fitting portion of the shroud piece is press-fitted into a second press-fitted portion of the scroll piece to form an outer circumferential seal part. The recirculation part recirculates part of the air which has reached the shroud part to an upstream of the compressor impeller.

Abstract: A compressor housing for a turbocharger, which is composed of a scroll piece, a shroud piece, and an outer-circumferential annular piece. The scroll piece includes a through part constituting a discharge port, a first intermediate wall surface extended from an intake-side wall surface of a scroll chamber and smoothly connected with the discharge port, and a scroll outer-circumferential part. The outer-circumferential annular piece includes an outer-circumferential annular press-fit part press fitted into the scroll outer-circumferential part, and a protruding part bent from an outer-circumference-side wall surface of the scroll chamber. The protruding part is inserted into the through part to form an inner wall surface of an intermediate part that communicates the discharge port with the scroll chamber. Then, the compressor housing is fixed to a center housing that is made of iron with high rigidity through joining parts provided at the scroll piece.

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: A housing for a turbocharger, which makes it possible to prevent sticking of deposit and attain satisfactory assembling workability and easy moldability by die casting. The housing is dividably composed of a scroll piece and a shroud piece, including an annular refrigerant flow path defined by a first flow path formation part of the scroll piece and a second flow path formation part of the shroud piece. The first and second flow path formation parts are fitted with each other at inner and outer circumferential seal parts for sealing the refrigerant flow path on inner and outer circumferential sides thereof. The inner circumferential seal part is formed by press-fitting a first press-fitting portion of the shroud piece into a first press-fitted portion of the scroll piece. The outer circumferential seal part is formed by press-fitting a second press-fitting portion of the shroud piece into a second press-fitted portion of the scroll piece.

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 compressor housing for a turbocharger including an intake port, a scroll chamber, and a shroud part. The shroud part includes an annular abradable seal, and an annular abradable seal fixing part. The abradable seal fixing part includes a press-fitting recessed portion into which the abradable seal is press-fitted, and a grooved portion formed at a forward side of the press-fitting recessed portion with respect to a press-fitting direction of the abradable seal. The abradable seal includes a press-fit abutting portion press-fitted into the press-fitting recessed portion, abutting against an inner circumferential surface of the press-fitting recessed portion, and a bulging portion at a forward side of the press-fit abutting portion with respect to the press-fitting direction. The outside diameter of the bulging portion is larger than the inside diameter of the press-fitting recessed portion but smaller than the inside diameter of the grooved portion.

Abstract: A housing for a turbocharger is dividedly formed of at least a scroll piece and a shroud piece, including a refrigerant flow path for cooling a diffuser surface. The refrigerant flow path is composed of an annular space defined by a first flow-path formation part of the scroll piece and a second flow-path formation part of the shroud piece, which are formed respectively in each opposing part of the scroll piece and the shroud piece facing each other. The first and second flow path formation parts are in contact with each other to form a contact portion at the outermost periphery of an inside surface of the refrigerant flow path. The contact portion has a groove formed by recessing the inside surface of the refrigerant flow path outwardly in the radial direction continuously in the circumferential direction. The groove is filled with a sealing material for sealing the contact portion.

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 bearing structure of a turbocharger includes a rotor shaft, a ball bearing, and a housing. An inner ring of the ball bearing has the rotor shaft inserted therein. The oil film damper is formed between the inner ring and an outer peripheral surface of the rotor shaft. The inner ring rotates with rotation of the rotor shaft via the oil film damper. An oil discharge path for scattering oil discharged from the oil film damper radially outside, is provided at least either on one end surface of the inner ring in an axial direction or on an opposing surface opposed to the inner ring, of a collar. The oil discharge path is formed of a groove that is arranged in a manner to be gradually apart from the oil film damper in the axial direction as going radially outside.

Abstract: An object of the present invention is to provide a bearing structure of a turbocharger that can prevent generation of unusual noise and a decrease in operation efficiency and that can reduce manufacturing costs. The bearing structure of a turbocharger to accomplish such an object, includes a rotor shaft, a ball bearing, a retainer, and a housing. The rotor shaft is provided with a turbine impeller mounted on a first end and a compressor impeller mounted on a second end. The ball bearing includes an inner ring and an outer ring that are supported in relatively rotatable manner. The retainer holds the outer ring. Between the inner ring and an outer peripheral surface of the rotor shaft, oil in a film state is interposed to form an oil film damper.

Abstract: A bearing structure of a turbocharger includes a rotor shaft, two angular ball bearings, a retainer, a housing, and an oil film damper. Each of the angular ball bearings includes an inner ring and an outer ring that are supported in relatively rotatable manner. The rotor shaft is inserted into the inner ring. The retainer holds the outer ring. The housing houses therein the rotor shaft, the angular ball bearings, and the retainer to constitute a bearing housing. The oil film damper is formed of oil in a film state and is interposed between the inner ring and an outer peripheral surface of the rotor shaft. The inner ring is configured to rotate with rotation of the rotor shaft via the oil film damper.

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: A compressor housing is constructed by assembling a scroll piece and a shroud piece. The scroll piece includes an inlet cylindrical portion, a front side wall section, and an outlet cylindrical portion in which the inner wall surface of the outlet communicating section is curved to connect an inner wall surface of a scroll chamber and that of an outlet port. Fabrication of the scroll piece includes a die casting step that uses a back mold having a first projecting portion and a front mold having a second projecting portion projecting toward the back side to form an intermediate formed body wherein both the first and second projecting portions are disposed within the outlet cylindrical portion, and a cutting and removal step that removes residue portions in the intermediate formed body by cutting.