# US 2014/0190439 A1 · Intake apparatus

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- Number: US 2014/0190439 A1
- Document ID: US20140190439A1
- Status: Published application
- Kind: A1
- Application number: 14/234,761
- Filed: 2012-07-18
- Published: 2014-07-10
- Earliest claimed: 2011-07-25
- Assignees: Kojima Press Industry Co., Ltd.
- Inventors: Shinji Kuraoka
- Web page: https://patentgrep.com/patent/US20140190439A1

## CPC

- F02M 35/1255: {using resonance}
- F01M 13/021: {of negative pressure}
- F02M 35/10222: {Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission}
- F02M 35/1261: {Helmholtz resonators}
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING

## Abstract

An intake apparatus includes an intake pipe, a resonator and a blowby gas recirculation pipe. The resonator includes a volume portion having a volume chamber therein and a connecting pipe connecting the volume portion and the intake pipe and having a connecting passage connecting the volume chambera and the intake passage. The blowby gas recirculation pipe includes an internal passage therein. The blowby gas recirculation pipe is connected to an axially midway portion of the connecting pipe, and an exit of the internal passage is connected to the connecting passage of the connecting pipe.

## Claims

### Claim 1

An intake apparatus comprising:
an intake pipe for a vehicle;
a resonator; and
a blowby gas recirculation pipe,
wherein the intake pipe includes an intake passage therein,
wherein the resonator includes a volume portion and a connecting pipe connecting the volume portion and the intake pipe, the volume portion including a volume chamber therein, the connecting pipe including a connecting passage therein and connecting the volume chamber of the volume portion and the intake passage of the intake pipe,
wherein the blowby gas recirculation pipe includes an internal passage therein, and
wherein the blowby gas recirculation pipe is connected to the connecting pipe of the resonator at an axial and midway portion of the connecting pipe, and an exit of the internal passage of the blowby gas recirculation pipe is connected to the connecting passage of the connecting pipe of the resonator.

### Claim 2 (depends on 1)

An intake apparatus according to claim 1, wherein the connecting pipe of the resonator includes an axis extending in an up-down direction over an entirety of the connecting pipe.

### Claim 3 (depends on 1)

An intake apparatus according to claim 1, wherein the exit of the internal passage of the blowby gas recirculation pipe is located above an opening of the connecting passage of the connecting pipe of the resonator to the intake passage and is located below a connecting portion of the connecting passage of the connecting pipe of the resonator to the volume chamber.

### Claim 4 (depends on 1)

An intake apparatus according to claim 1, wherein the exit of the internal passage of the blowby gas recirculation pipe opposes an inner wall surface of the connecting pipe of the resonator.

### Claim 5 (depends on 1)

An intake apparatus according to claim 1, wherein an intake passage-side end of the connecting passage of the connecting pipe of the resonator has a larger diameter than portions of the connecting passage other than the intake passage-side end of the connecting passage.