# US 8,541,092 B2 · Bonded honeycomb segment assembly

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- Number: US 8,541,092 B2
- Document ID: US8541092B2
- Status: Granted
- Kind: B2
- Application number: 12/731,552
- Filed: 2010-03-25
- Published: 2010-09-30
- Granted: 2013-09-24
- Earliest claimed: 2009-03-30
- Assignees: NGK Insulators, Ltd.
- Applicants: Tomoyuki Takagi; Reiji Matsubara
- Inventors: Tomoyuki Takagi; Reiji Matsubara
- Web page: https://patentgrep.com/patent/US8541092B2

## CPC

- B01D 46/2448: {of the adhesive layers, i.e. joints between segments}
- B01D 46/24495: {Young's modulus}
- B01D 46/2478: {Structures comprising honeycomb segments}
- C04B 38/0019: {characterised by the material used for joining separate subunits}
- C22C 1/08: Alloys with open or closed pores
- F01N 3/0222: {the structure being monolithic, e.g. honeycombs}
- F01N 3/2828: {Ceramic multi-channel monoliths, e.g. honeycombs}
- B01D 46/2498: {The honeycomb filter being defined by mathematical relationships}
- B01D 2279/30: for treatment of exhaust gases from IC Engines
- C04B 2111/00198: {Characterisation or quantities of the compositions or their ingredients expressed as mathematical formulae or equations}
- C04B 2111/00793: {as filters or diaphragms}
- C04B 2111/2084: {Thermal shock resistance}
- F01N 2330/06: Ceramic, e.g. monoliths
- F01N 2330/30: Honeycomb supports characterised by their structural details
- Y02T 10/12: Improving ICE efficiencies
- Y10T 428/24149: Honeycomb-like
- 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)
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A bonded honeycomb segment assembly has plurality of honeycomb segments each including cell structure having plurality of cells as fluid passages partitioned by porous partition walls and provided in parallel with one another, and outer wall provided in the outer periphery of the cell structure. The outer wall of each of the plurality of honeycomb segments is bonded to one another via bonding layers. Relation of M1<M2 is satisfied in which M1 is compressive Young's modulus in thickness direction of the bonding layers positioned in the vicinity of gravity point in cross section of the bonded honeycomb segment assembly perpendicular to the fluid passage direction of the cells, and M2 is compressive Young's modulus in the thickness direction of the bonding layers bonding the outer wall of each of the plurality of honeycomb segments positioned in the outermost periphery of the bonded honeycomb segment assembly.

## Claims

### Claim 1

A bonded honeycomb segment assembly comprising: a plurality of honeycomb segments each including a cell structure having a plurality of cells as fluid passages partitioned by porous partition walls and provided in parallel with one another, and an outer wall provided in the outer periphery of the cell structure,
wherein the outer wall of each of the plurality of honeycomb segments is bonded to one another via bonding layers, and
a compressive Young's modulus M1 in the thickness direction of the bonding layers positioned in the vicinity of a center of gravity n a cross section of the bonded honeycomb segment assembly perpendicular to the fluid passage direction of the cells, and a compressive Young's modulus M2 in the thickness direction of the bonding layers bonding the outer wall of each of the plurality of honeycomb segments positioned in the outermost periphery of the bonded honeycomb segment assembly satisfy a relation of M1<M2,
wherein the compressive Young's Modulus M2 is at least 20 MPa and not more than 40 MPa.

### Claim 2 (depends on 1)

The bonded honeycomb segment assembly according to claim 1, wherein the compressive Young's modulus M1 and the compressive Young's modulus M2 satisfy a relation of M2/M1≧1.01.

### Claim 3 (depends on 1)

The bonded honeycomb segment assembly according to claim 1, wherein the compressive Young's modulus M1 and the compressive Young's modulus M2 satisfy a relation of M2/M1≧1.1.