(19)
(11) EP 1 458 958 A1

(12)

(43) Date of publication:
22.09.2004 Bulletin 2004/39

(21) Application number: 02804444.4

(22) Date of filing: 25.11.2002
(51) International Patent Classification (IPC)7F01N 3/00, F01L 1/34, F02B 77/00, F02D 7/00
(86) International application number:
PCT/US2002/037775
(87) International publication number:
WO 2003/048533 (12.06.2003 Gazette 2003/24)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

(30) Priority: 30.11.2001 US 334507 P
25.11.2002 US 360701

(71) Applicant: Delphi Technologies, Inc.
Troy, MI 48098-2815 (US)

(72) Inventors:
  • FOSTER, Michael, Ralph
    Columbiaville, MI 48421 (US)
  • FOSTER, Matthew, G.
    Davison, MI 48423 (US)
  • PRICE, Kenneth, S.
    Brighton, MI 48114 (US)

(74) Representative: Denton, Michael John et al
Delphi European Headquarters,64, avenue de la Plaine de France,Paris Nord II,B.P. 60059,Tremblay en France
95972 Roissy Charles de Gaulle Cédex
95972 Roissy Charles de Gaulle Cédex (FR)

   


(54) ENGINE CYLINDER DEACTIVATION TO IMPROVE THE PERFORMANCE OF EXHAUST EMISSION CONTROL SYSTEMS