# US 2018/0023456 A1 · Car intercooler pipe having low vibration properties

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- Number: US 2018/0023456 A1
- Document ID: US20180023456A1
- Status: Published application
- Kind: A1
- Application number: 15/550,598
- Filed: 2015-03-31
- Published: 2018-01-25
- Earliest claimed: 2015-02-13
- Assignees: Hyundai Motor Company; Kia Motors Corporation
- Applicants: Hyundai Motor Company; Kia Motors Corporation
- Inventors: Gi-Hwan KIM; Chi-Hoon CHOI
- Web page: https://patentgrep.com/patent/US20180023456A1

## CPC

- F02B 29/0475: {the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location}
- F02B 29/04: Cooling of air intake supply
- F02M 35/10137: {Flexible ducts, e.g. bellows or hoses}
- F02M 35/10144: {Connections of intake ducts to each other or to another device}
- F02M 35/10268: {Heating, cooling or thermal insulating means (air coolers F02B29/04; thermal treatment of combustion-air, fuel or fuel-air mixture F02M31/00; details of the throttle valve housing F02D9/1035)}
- F02M 35/10354: {Joining multiple sections together (joining plastic materials together in general B29C65/00)}
- F16L 9/127: the walls consisting of a single layer
- F16L 11/15: corrugated (F16L11/16 takes precedence)
- F02M 35/10321: {Plastics; Composites; Rubbers}
- F02M 35/10347: {Moulding, casting or the like}
- Y02T 10/12: Improving ICE efficiencies
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A car intercooler pipe includes an inlet of the intercooler pipe positioned at an upper side of the car intercooler pipe, an upper corrugated portion having upper corrugated bodies protruding in a rib shape from a surface of a pipe body extending in a direction toward the inlet, an outlet of the intercooler pipe positioned at a lower side of the car intercooler pipe, a lower corrugated portion, and an intermediate portion bent downward from the upper corrugated portion and having the pipe body connected to the lower corrugated portion, wherein a thickness of the pipe body of the intermediate portion is greater than a thickness of the upper corrugated body of the upper corrugated portion and a thickness of the lower corrugated body of the lower corrugated portion, and wherein disconnection portions having corrugations with different heights are formed in the upper corrugated body and the lower corrugated body.

## Claims

### Claim 1

A car intercooler pipe comprising:
an inlet of the intercooler pipe positioned at an upper side of the car intercooler pipe;
an upper corrugated portion having upper corrugated bodies protruding in a rib shape from a surface of a pipe body extending in a direction toward the inlet;
an outlet of the intercooler pipe positioned at a lower side of the car intercooler pipe;
a lower corrugated portion having lower corrugated bodies protruding in a rib shape from a surface of the pipe body extending in a direction toward the outlet; and
an intermediate portion bent downward from the upper corrugated portion and having the pipe body connected to the lower corrugated portion,
wherein a thickness of the pipe body of the intermediate portion is greater than a thickness of the upper corrugated body of the upper corrugated portion and a thickness of the lower corrugated body of the lower corrugated portion, and
wherein disconnection portions having corrugations with different heights are formed in the upper corrugated body and the lower corrugated body.

### Claim 2 (depends on 1)

The car intercooler pipe of claim 1, wherein the upper corrugated portion and the lower corrugated portion include a soft synthetic resin material, and the intermediate portion includes a hard synthetic resin material.

### Claim 3 (depends on 2)

The car intercooler pipe of claim 2, wherein the upper corrugated portion and the lower corrugated portion include polyester (PET) based synthetic resin, and the intermediate portion includes polybutylene terephthalate (PBT) based synthetic resin.

### Claim 4 (depends on 3)

The car intercooler pipe of claim 3, wherein the soft synthetic resin material of the upper corrugated portion and the lower corrugated portion is a thermoplastic polyester elastomer (TPC-ET) synthetic resin including dicarboxylate-diol polymer and glycol polymer.

### Claim 5 (depends on 3)

The car intercooler pipe of claim 3, wherein the hard synthetic resin material adopted for the intermediate portion is a thermoplastic polyester synthetic resin which is polybutylene terephthalate (PBT).

### Claim 6 (depends on 1)

The car intercooler pipe of claim 1, wherein the disconnection portions are disposed in rows in the form of straight lines in a longitudinal direction of the intercooler pipe so that force required to bend the intercooler pipe in a particular direction and force required to bend the intercooler pipe in another directions are different from each other.

### Claim 7 (depends on 6)

The car intercooler pipe of claim 6, wherein the rows, which are constituted by the disconnection portions, include two or more rows disposed to be adjacent to one another in the longitudinal direction on each of the upper corrugated body and the lower corrugated body, and the rows are formed at positions spaced apart from each other around each of the upper corrugated body and the lower corrugated body.

### Claim 8 (depends on 1)

The car intercooler pipe of claim 1, comprising:
a connector having a stopper protruding from an inner circumferential surface of the connector and coupled to an end of the intercooler pipe to fasten the intercooler pipe to a connecting port of a throttle body,
wherein when the connecting port is inserted into the connector, the stopper is engaged with and fastened to a catching projection protruding from an outer circumferential surface of the connecting port, and the connector permits a rotation of the intercooler pipe in the connecting port.

### Claim 9 (depends on 8)

The car intercooler pipe of claim 8, wherein a rubber seal, which seals a portion between the connector and the connecting port when the connector is fastened to the connecting port, is mounted in the connector, and at least one of a frictional force between the rubber seal and the connector and a frictional force between the rubber seal and the connecting port is set to be small enough to permit the rotation of the connector.