# US 2019/0170258 A1 · Sealing ring and turbocharger

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- Number: US 2019/0170258 A1
- Document ID: US20190170258A1
- Status: Published application
- Kind: A1
- Application number: 16/267,411
- Filed: 2019-02-05
- Published: 2019-06-06
- Earliest claimed: 2016-09-12
- Assignees: IHI Corporation
- Applicants: IHI Corporation
- Inventors: Satoshi OHTANI
- Web page: https://patentgrep.com/patent/US20190170258A1

## CPC

- F16J 15/3488: {Split-rings}
- F01D 11/003: {by packing rings; Mechanical seals}
- F02C 6/12: Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
- F16J 15/3272: the rings having a break or opening, e.g. to enable mounting on a shaft otherwise than from a shaft end
- F02B 39/00: Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F05D 2220/40: in turbochargers
- F05D 2240/55: Seals
- F05D 2300/10: Metals, alloys or intermetallic compounds
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

A sealing ring includes: a main body portion extending from one end to another end in a circumferential direction of a ring hole; and a pair of facing portions separately provided on the one end side and the other end side of the main body portion, the pair of facing portions being in contact with each other while facing each other in a direction of a central axis of the ring hole, the pair of facing portions each subjected to energizing force acting in a direction toward the other.

## Claims

### Claim 1

A sealing ring comprising:
a main body portion extending from one end to another end in a circumferential direction of a ring hole; and
a pair of facing portions separately provided on the one end side and the other end side of the main body portion, the pair of facing portions being in contact with each other while facing each other in a direction of a central axis of the ring hole, the pair of facing portions each subjected to energizing force acting in a direction toward the other.

### Claim 2 (depends on 1)

The sealing ring according to claim 1, further comprising:
a first step portion formed on the one end side of the main body portion and recessed toward one surface side in the direction of the central axis; and
a second step portion formed on the other end side of the main body portion and recessed toward another surface side in the direction of the central axis,
wherein the facing portions are separately provided in the first step portion and the second step portion.

### Claim 3 (depends on 1)

The sealing ring according to claim 1,
wherein one of the facing portions is a tapered surface inclined from the one end of the main body portion toward the one surface in the direction of the central axis, and
the other facing portion is a tapered surface inclined from the other end of the main body portion toward the other surface in the direction of the central axis.

### Claim 4 (depends on 1)

A turbocharger comprising:
the sealing ring according to claim 1; and
a shaft having a part positioned inside the ring hole of the sealing ring and rotating relative to the sealing ring.