# US 2013/0154266 A1 · Exhaust gas turbocharger

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- Number: US 2013/0154266 A1
- Document ID: US20130154266A1
- Status: Published application
- Kind: A1
- Application number: 13/818,535
- Filed: 2010-10-27
- Published: 2013-06-20
- Earliest claimed: 2010-10-27
- Assignees: Mitsubishi Heavy Industries, Ltd.
- Inventors: Yoshihisa Ono; Keiichi Shiraishi
- Web page: https://patentgrep.com/patent/US20130154266A1

## CPC

- H02K 7/1823: {structurally associated with turbines or similar engines}
- F02B 37/10: at least one pump being alternatively {or simultaneously} driven by exhaust and other drive, {e.g. by pressurised fluid from a reservoir or an engine-driven pump}
- F02B 39/10: electric
- H02K 1/185: {to outer stators}
- H02K 5/04: Casings or enclosures characterised by the shape, form or construction thereof
- H02K 5/203: {specially adapted for liquids, e.g. cooling jackets}
- H02K 5/207: {with openings in the casing specially adapted for ambient air}
- H02K 15/50: Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38)
- Y02T 10/12: Improving ICE efficiencies
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- 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 generator housing that accommodates, in the interior thereof, a hollow-cylindrical liner and a stator that is disposed on a radially inner side of the liner has a split-in-two structure that can be divided into two parts at a plane including the rotation axis of the rotation shaft; and individual joints formed inside the generator housing between a pathway and a hole for supplying a cooling medium to the pathway, which is formed inside the liner, and also a hole for exhausting the cooling medium from the pathway are provided with ring-like members that are provided with front surfaces that face the liner and back surfaces that face the generator housing and that have a through-hole that communicates between the hole and the pathway or a through-hole that communicates between the hole and the pathway center portions thereof.

## Claims

### Claim 1

An exhaust gas turbocharger comprising: a turbine unit that is driven by exhaust gas guided thereto from an internal combustion engine; a compressor unit that is driven by the turbine unit to feed fresh air to the internal combustion engine; and a generator having a rotation shaft that is linked to rotation shafts of the turbine unit and the compressor unit, wherein a generator housing that accommodates, in the interior thereof, a hollow-cylindrical liner that forms the generator, in which a pathway for allowing a cooling medium that cools the generator to flow is formed in the interior thereof, and a stator that forms the generator, which is disposed on a radially inner side of the liner, has a split-in-two structure that can be divided into two parts at a plane including the rotation axis of the rotation shaft; and individual joints formed inside the generator housing between the pathway and a first hole for supplying the cooling medium to the pathway and also a second hole for exhausting the cooling medium from the pathway are provided with ring-like members that are provided with front surfaces that face the liner and back surfaces that face the generator housing and that have a through-hole that communicates between the first hole and the pathway or a through-hole that communicates between the second hole and the pathway at center portions thereof.

### Claim 2 (depends on 1)

An exhaust gas turbocharger according to claim 1, wherein at least one circumferential groove is formed along a circumferential direction in each of the front surfaces and the back surface, and O-rings are disposed in the individual circumferential grooves.

### Claim 3 (depends on 1)

An internal combustion engine equipped with the exhaust gas turbocharger according to claim 1.

### Claim 4

A generator wherein a generator housing that accommodates, in the interior thereof, a hollow-cylindrical liner, in which a pathway for allowing a cooling medium to flow is formed in the interior thereof and a stator, which is disposed on a radially inner side of the liner, has a split-in-two structure that can be divided into two parts at a plane including the rotation axis of a rotation shaft; and individual joints formed inside the generator housing between the pathway and a first hole for supplying the cooling medium to the pathway and also a second hole for exhausting the cooling medium from the pathway are provided with ring-like members that are provided with front surfaces that face the liner and back surfaces that face the generator housing and that have a through-hole that communicates between the first hole and the pathway or a through-hole that communicates between the second hole and the pathway at center portions thereof.

### Claim 5 (depends on 4)

A generator according to claim 4, wherein at least one circumferential groove is formed along circumferential direction in each of the front surfaces and the back surface, and O-rings are disposed in the individual circumferential grooves.