(19)
(11) EP 0 420 462 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.08.1991 Bulletin 1991/34

(43) Date of publication A2:
03.04.1991 Bulletin 1991/14

(21) Application number: 90310110.3

(22) Date of filing: 17.09.1990
(51) International Patent Classification (IPC)5: F01N 3/28, F01N 3/20
(84) Designated Contracting States:
DE ES FR GB IT SE

(30) Priority: 28.09.1989 GB 8921956
28.09.1989 GB 8921957

(71) Applicant: ROVER GROUP LIMITED
Canley Coventry CV4 9DB (GB)

(72) Inventor:
  • Hutchins, William Richard
    Kenilworth, CV8 1PR (GB)

(74) Representative: Farrow, Robert Michael et al
Rover Group Limited Patent Department Gaydon Test Centre Banbury Road
Lighthorne, Warwick CV35 OBL
Lighthorne, Warwick CV35 OBL (GB)


(56) References cited: : 
   
       


    (54) A catalytic converter


    (57) The catalytic converter comprises a housing (20) for a catalyst section (19) comprising a matrix (22) formed with passages (23) coated with a catalyst material. An entry duct (28) and an exit duct (32) for exhaust gas are defined within the housing. The passages are oblique to the direction of gas flow through the entry section. The entry duct may have a flap (147 Figs 10,11) which can be moved between a position in which it constrains exhaust gas to pass through only part of the matrix to reduce light-up time, and a position in which it permits gas to flow through substantially the entire matrix.







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