Global Patent Index - EP 1009923 A1

EP 1009923 A1 2000-06-21 - DEVICE AND METHOD FOR REDUCTION OF HARMFUL EMISSIONS FROM A COMBUSTION ENGINE

Title (en)

DEVICE AND METHOD FOR REDUCTION OF HARMFUL EMISSIONS FROM A COMBUSTION ENGINE

Title (de)

VORRICHTUNG UND VERFAHREN ZUR VERRINGERUNG DES SCHADSTOFFAUSSTOSSES IN EINER BRENNKRAFTMASCHINE

Title (fr)

DISPOSITIF ET PROCEDE PERMETTANT DE REDUIRE LES EMISSIONS NOCIVES D'UN MOTEUR A COMBUSTION INTERNE

Publication

EP 1009923 A1 (EN)

Application

EP 98934110 A

Priority

  • SE 9801396 W
  • SE 9702757 A

Abstract (en)

[origin: WO9904145A1] The invention relates to an arrangement for reducing harmful emissions from an internal combustion engine (1) by rapid heating-up of an exhaust gas catalyst (9) which is arranged in an exhaust system (8) belonging to said engine (1), comprising means (11, 16) of supplying hydrogen and means (21; 11, 13) of supplying air to the exhaust system (8) upstream of said catalyst (9), the mixture of hydrogen and air giving rise to spontaneous exothermic combustion in association with the catalyst (9), and also a control unit (5) for controlling the functioning of said means (11, 13, 16, 21). The invention is characterized in that said control unit (5) is adapted to control the supply of air and hydrogen to the exhaust system in connection with starting the engine (1) for a period of time (t) that lasts at least until the exhaust gas catalyst (9) has reached a limit temperature at which its functioning is not hampered by CO or HC poisoning. The invention also relates to a procedure for such reduction in harmful emissions. A short heating-up time for the catalyst (9) is achieved by means of the invention.

IPC 1-7 (main, further and additional classification)

F01N 3/20

IPC 8 full level (invention and additional information)

B01D 53/86 (2006.01); F01N 3/20 (2006.01); F01N 3/36 (2006.01); F02D 19/08 (2006.01); F02D 41/06 (2006.01); F02M 21/02 (2006.01)

CPC (invention and additional information)

F02D 19/0644 (2013.01); F01N 3/2033 (2013.01); F02D 19/081 (2013.01); F01N 2610/04 (2013.01); F01N 2610/08 (2013.01); Y02T 10/26 (2013.01); Y02T 10/36 (2013.01)

Citation (search report)

See references of WO 9904145A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9904145 A1 19990128; EP 1009923 A1 20000621; JP 2001510260 A 20010731; SE 509787 C2 19990308; SE 9702757 D0 19970718; SE 9702757 L 19990119

INPADOC legal status


2002-08-07 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020201

2001-07-18 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010606

2000-06-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000114

2000-06-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE