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1. (WO1987003646) CATALYST HOUSING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1987/003646 International Application No.: PCT/SE1986/000566
Publication Date: 18.06.1987 International Filing Date: 11.12.1986
IPC:
F01N 3/28 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
24
characterised by constructional aspects of converting apparatus
28
Construction of catalytic reactors
Applicants:
SAAB-SCANIA AKTIEBOLAG [SE/SE]; S-461 80 Trollhättan, SE (AllExceptUS)
GARCIA, Mikael [SE/SE]; SE (UsOnly)
Inventors:
GARCIA, Mikael; SE
Agent:
HOLMBORN, Erland; Saab-Scania AB, Scaniadivisionen Utvecklings- och Produktionssektorn, Patent S-151 87 Södertälje, SE
Priority Data:
8505903-813.12.1985SE
Title (EN) CATALYST HOUSING
(FR) CARTER DE CATALYSEUR
Abstract:
(EN) A catalyst housing (1) which is part of a vehicle exhaust system, said catalyst housing (1) including an elliptical intermediate part (2) which encloses a monolithic catalyst body (4). An inlet part (7) connects the intermediate part (2) with a cylindrical inlet pipe (8), through which exhaust gases are intended to flow into the catalyst housing (1). With the object of simplifying the configuration of the inlet part (7), which has a supporting function in the catalyst housing (1), the pipe (8) is provided with an end portion (9) thrusting into the inlet part (7) and formed with two diametrically opposed impressions (10). These impressions converge towards each other towards the inner end (11) of the end portion (9) such that a symmetrical constriction of the end portion (9) is obtained. Two branch ducts (12) formed by the constriction enable distribution of the gas flow over the entire elliptical end wall surface (15) of the catalyst body (4).
(FR) Un carter (1) de catalyseur faisant partie du système d'échappement d'un véhicule comprend une partie intermédiaire elliptique (2) qui renferme un corps catalyseur monolytique (4). Une partie d'admission (7) relie la partie intermédiaire (2) avec un tuyau d'admission cylindrique (8) par lequel les gaz d'échappement s'écoulent dans le carter (1) de catalyseur. Afin de simplifier la construction de la partie d'admission (7), qui exerce une fonction de support dans le carter (1) de catalyseur, le tuyau (8) est pourvu d'une extrémité (9) qui pénètre dans la partie d'admission (7) et comprend deux dépressions (10) diamétralement opposées. Ces dépressions convergent l'une vers l'autre vers l'extrémité intérieure (11) de l'extrémité (9), de façon à former un étranglement symétrique de l'extrémité (9). Deux conduites de dérivation (12) formées par l'étranglement permettent à l'écoulement de gaz de se distribuer sur toute la surface elliptique (15) de la paroi terminale du corps (4) de catalyseur.
Designated States: DE, JP, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: Swedish (SV)
Also published as:
EP0250537