# US 10,767,606 B2 · Tubular air cleaner for internal combustion engine and tubular filter element

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,767,606 B2
- Document ID: US10767606B2
- Status: Granted
- Kind: B2
- Application number: 15/819,689
- Filed: 2017-11-21
- Published: 2018-05-31
- Granted: 2020-09-08
- Earliest claimed: 2016-11-30
- Assignees: Toyota Boshoku Kabushiki Kaisha
- Applicants: Toyota Boshoku Kabushiki Kaisha
- Inventors: Hiroaki Morikawa
- Web page: https://patentgrep.com/patent/US10767606B2

## CPC

- F02M 35/0201: {Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof}
- B01D 46/0036: {by adsorption or absorption}
- B01D 46/2411: {Filter cartridges}
- B01D 46/521: {using folded, pleated material}
- B01D 53/0407: {Constructional details of adsorbing systems}
- B01D 53/0415: {Beds in cartridges}
- F02M 25/0854: {Details of the absorption canister}
- F02M 25/089: {Layout of the fuel vapour installation}
- F02M 35/02483: {Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements}
- B01D 2253/102: Carbon
- B01D 2257/702: Hydrocarbons
- B01D 2259/4566: for use in transportation means
- B01D 2279/60: for the intake of internal combustion engines or turbines
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

A tubular air cleaner for an internal combustion engine includes a tubular housing, which includes a circumferential wall including an inlet, a top wall including an outlet, and a bottom wall opposed to the top wall, and a tubular filter element, which includes a tubular filter portion and is accommodated in the housing. A frame is arranged at an inner side of the filter portion to maintain shape of the filter portion. A planar adsorbent filter, which adsorbs evaporated fuel of the internal combustion engine, extends in an axial direction of the filter portion and is fixed to the frame. The inner surface of the filter portion is spaced apart from each of opposite planes of the adsorbent filter by a gap that allows air to reach the outlet without passing through the adsorbent filter.

## Claims

### Claim 1

A tubular air cleaner for an internal combustion engine arranged in an intake air passage of the internal combustion engine, the tubular air cleaner comprising:
a tubular housing including a circumferential wall including an inlet, a top wall including an outlet, and a bottom wall opposed to the top wall; and
a tubular filter element including a tubular filter portion and accommodated in the housing, wherein
a frame is arranged at an inner side of the filter portion, wherein the frame maintains a shape of the filter portion,
a planar adsorbent filter is provided within an interior of the frame and extends in an axial direction of the filter portion, wherein the planar adsorbent filter is fixed to the frame,
the adsorbent filter adsorbs evaporated fuel of the internal combustion engine, and
the filter portion includes an inner surface spaced apart from each of opposite planes of the adsorbent filter by a gap that allows air, which has flowed through the filter portion into an inner side of the filter element, to reach the outlet without passing through the adsorbent filter.

### Claim 2 (depends on 1)

The tubular air cleaner according to claim 1, wherein
the frame includes two half tubular bodies, and
each of the half tubular bodies includes a holding portion that holds an edge of the adsorbent filter.

### Claim 3 (depends on 2)

The tubular air cleaner according to claim 2, wherein the holding portion entirely extends around the adsorbent filter.

### Claim 4

A tubular filter element accommodated in a housing of an air cleaner for an internal combustion engine, the tubular filter element comprising a tubular filter portion, wherein
a frame is arranged at an inner side of the filter portion, wherein the frame maintains a shape of the filter portion,
a planar adsorbent filter is provided within an interior of the frame and extends in an axial direction of the filter portion, wherein the planar adsorbent filter is fixed to the frame,
the adsorbent filter adsorbs evaporated fuel of the internal combustion engine, and
the filter portion includes an inner surface spaced apart from each of opposite planes of the adsorbent filter by a gap that allows air, which has flowed through the filter portion into an inner side of the filter element, to flow out of the air cleaner without passing through the adsorbent filter.

### Claim 5

A tubular air cleaner for an internal combustion engine arranged in an intake air passage of the internal combustion engine, the tubular air cleaner comprising:
a tubular housing including a circumferential wall including an inlet, a top wall including an outlet, and a bottom wall opposed to the top wall; and
a tubular filter element including a tubular filter portion and accommodated in the housing, wherein
a frame is arranged at an inner side of the filter portion, wherein the frame maintains a shape of the filter portion,
a planar adsorbent filter extends in an axial direction of the filter portion and is fixed to the frame,
the adsorbent filter adsorbs evaporated fuel of the internal combustion engine, and
the filter portion includes an inner surface spaced apart from each of opposite planes of the adsorbent filter by a gap that allows air, which has flowed through the filter portion into an inner side of the filter element, to reach the outlet without passing through the adsorbent filter, wherein
the frame includes two half tubular bodies, and
each of the half tubular bodies includes a holding portion that holds an edge of the adsorbent filter.

### Claim 6 (depends on 5)

The tubular air cleaner according to claim 5, wherein the holding portion entirely extends around the adsorbent filter.