# US 10,371,107 B2 · Air intake device for internal combustion engine

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- Number: US 10,371,107 B2
- Document ID: US10371107B2
- Status: Granted
- Kind: B2
- Application number: 15/775,514
- Filed: 2015-11-19
- Published: 2018-12-06
- Granted: 2019-08-06
- Earliest claimed: 2015-11-19
- Assignees: Nissan Motor Co., Ltd.
- Applicants: Nissan Motor Co., Ltd.
- Inventors: Osamu Ooki; Kazuki Iijima
- Web page: https://patentgrep.com/patent/US10371107B2

## CPC

- F02M 35/10255: {Arrangements of valves; Multi-way valves (F02M35/10032 takes precedence; valves in the plenum chamber F02M35/10065; check valves F02M35/10275)}
- F02B 31/06: Movable means, e.g. butterfly valves
- F02D 9/10: having pivotally-mounted flaps
- F02F 1/4257: {with an intake liner}
- F02M 35/10: Air intakes; Induction systems
- F02M 35/10085: {having a connecting piece, e.g. a flange, between the engine and the air intake being foreseen with a throttle valve, fuel injector, mixture ducts or the like}
- F02M 35/10262: {Flow guides, obstructions, deflectors or the like (for generating a charge motion in the cylinder F02B31/00; for re-atomising condensed fuel or homogenising fuel-air mixture F02M29/00)}
- 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 35/10321: {Plastics; Composites; Rubbers}
- F02M 35/10354: {Joining multiple sections together (joining plastic materials together in general B29C65/00)}
- F02M 35/104: Intake manifolds
- F16K 27/003: {Housing formed from a plurality of the same valve elements}
- F16K 27/0227: {with the valve members swinging around an axis located at the edge of or outside the valve member}
- F16K 27/065: {with cylindrical plugs}
- F02D 9/103: {the rotation axis being located at an edge}
- F02D 9/1095: {Rotating on a common axis, e.g. having a common shaft}
- Y02T 10/12: Improving ICE efficiencies
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- F02F: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An air intake device for an internal combustion engine of the present invention includes a water discharge passage extending from a bottom surface of a control valve housing part recessed in a housing passage forming part of an air intake passage to an air intake port. The water discharge passage is formed independently from the air intake passage, and includes: a water collection groove recessed in the bottom surface; a water discharge hole formed penetrating a cover of a valve control housing; and a water discharge hole penetrating a flange part of an insert inserted into the air intake port. The downstream end of the water discharge hole is connected to a space defined between an air intake port inner wall surface and an insert cylindrical part.

## Claims

### Claim 1

An air intake device for an internal combustion engine in which a control valve opening and closing a part of a passage cross section of an air intake passage is disposed on an upstream side from an air intake port formed in a cylinder head, comprising:
an insert configured to guide a main flow of intake air into the air intake port, the main flow of the intake air which has passed through the control valve, wherein the insert includes:
a cylindrical part having a cylindrical shape which is inserted into the air intake port; and
a flange part which is provided around an upstream side opening end of the cylindrical part and which is sandwiched between a control valve housing which houses the control valve and the cylinder head,
a space defined between an inner wall surface of the air intake port and an outer wall surface of the cylindrical part on a whole outside of the cylindrical part; and
a water discharge passage formed extending from a bottom surface of the air intake passage at which the control valve is positioned to the space, wherein the water discharge passage penetrates the flange part.

### Claim 2 (depends on 1)

The air intake device for the internal combustion engine according to claim 1, wherein the control valve is provided with a valve part which turns at a position offset radially outward from a center of a rotation shaft,
wherein the valve part includes an outer side surface formed in a circular-arc shape along a turning orbit around the rotation shaft as a center, and
wherein the bottom surface of the air intake passage is formed with a housing part recessed in a circular-arc shape which houses the valve part, and an upstream end of the water discharge passage is opened in a bottom portion of the housing part.

### Claim 3 (depends on 2)

The air intake device for the internal combustion engine according to claim 2, wherein the bottom portion of the housing part is formed with a water collection groove recessed therein, the water collection groove which forms a part of the water discharge passage.

### Claim 4 (depends on 3)

The air intake device for the internal combustion engine according to claim 3, wherein the water discharge passage is opened independently from an opening part of the air intake passage in an end surface of the control valve housing.