(19)
(11) EP 1 331 388 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.11.2003 Bulletin 2003/46

(43) Date of publication A2:
30.07.2003 Bulletin 2003/31

(21) Application number: 03001389.0

(22) Date of filing: 27.01.2003
(51) International Patent Classification (IPC)7: F02M 25/07, F01N 3/10, F01N 7/10, F01N 3/02
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 28.01.2002 JP 2002018790

(71) Applicant: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
Tokyo 108-8410 (JP)

(72) Inventors:
  • Ohashi, Tomohiro
    Minato-ku, Tokyo (JP)
  • Koga, Kazuo
    Minato-ku, Tokyo (JP)

(74) Representative: VOSSIUS & PARTNER 
Siebertstrasse 4
81675 München
81675 München (DE)

   


(54) Exhaust gas recirculation device for engines


(57) An EGR device for engines, capable of recirculating a SOF-removed EGR gas irrespective of the set condition of a catalyst in an exhaust system and without needing to extend an EGR conduit (7) and provide a universal joint; reducing the manufacturing cost in consequence; and preventing the deposition of SOF in an intake air system. The EGR conduit (7) is connected at one end thereof to an exhaust pipe (2C) collected portion of an exhaust manifold (2), and at the other end thereof to an engine-side fixing flange, and a catalyst (6) used exclusively for EGR is provided in the EGR conduit (7). A part of an exhaust gas flowing in the exhaust manifold (2) is recirculated as an EGR gas into the intake air system for an engine via the EGR conduit (7), and, during this time, the SOF contained in the EGR gas is removed by the catalyst (6).






Search report