Global Patent Index - EP 1044059 A1

EP 1044059 A1 2000-10-18 - HEATABLE CATALYTIC CONVERTER ARRANGEMENT HAVING A WATER TRAP LOCATED UPSTREAM

Title (en)

HEATABLE CATALYTIC CONVERTER ARRANGEMENT HAVING A WATER TRAP LOCATED UPSTREAM

Title (de)

BEHEIZBARE KATALYSATORANORDNUNG MIT VORGESCHALTETER WASSERFALLE

Title (fr)

DISPOSITIF CATALYSEUR POUVANT ETRE CHAUFFE POURVU D'UN PIEGE A EAU PLACE EN AMONT

Publication

EP 1044059 A1 (DE)

Application

EP 99906104 A

Priority

  • DE 19800654 A
  • EP 9900046 W

Abstract (en)

[origin: DE19800654A1] The invention relates to an arrangement for purifying an exhaust gas stream of a combustion engine (1). The device contains a first water trap (5), an electrically heatable honeycomb (7) and a honeycomb (8) with a catalytic active coating, said coating promoting oxidation, which are successively arranged in a flow direction (S) of the exhaust gas. The electrically heatable honeycomb (7) and the honeycomb (8) with a catalytic active coating can completely or partially form a component. Such an assembly can be connected as a small supplemental system behind a lambda-probe equipped catalytic converter in order to guarantee exhaust gas purification during the cold-start phase. The supplemental system, with a larger dimension, can assume the entire exhaust gas purification. The dry honeycomb (7) which can be electrically heated by the water trap located upstream quickly reaches the temperature ranging from only 70 to 90 DEG C which is necessary for a catalytic conversion and, in addition, requires less electric energy than conventional systems. The arrangement enables the reduction of pollutants in exhaust gases of motor vehicles to extremely low amounts.

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

B01D 53/94; F01N 3/08; F01N 3/30

IPC 8 full level (invention and additional information)

B01D 53/94 (2006.01); F01N 3/00 (2006.01); F01N 3/02 (2006.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01); F01N 3/22 (2006.01); F01N 3/30 (2006.01); F01N 13/02 (2010.01)

CPC (invention and additional information)

F01N 3/0835 (2013.01); F01N 3/005 (2013.01); F01N 3/02 (2013.01); F01N 3/0807 (2013.01); F01N 3/2013 (2013.01); F01N 3/30 (2013.01); F01N 13/009 (2014.06); F01N 2240/02 (2013.01); F01N 2260/14 (2013.01); Y02T 10/22 (2013.01); Y02T 10/26 (2013.01)

Citation (search report)

See references of WO 9934902A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19800654 A1 19990715; CN 1288395 A 20010321; EP 1044059 A1 20001018; JP 2002510004 A 20020402; RU 2212929 C2 20030927; WO 9934902 A1 19990715

INPADOC legal status


2004-01-28 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030722

2002-06-19 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020503

2000-10-18 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000808

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT