Global Patent Index - EP 0925433 A1

EP 0925433 A1 19990630 - AIR/FUEL MIXTURE CONTROL IN AN INTERNAL COMBUSTION ENGINE

Title (en)

AIR/FUEL MIXTURE CONTROL IN AN INTERNAL COMBUSTION ENGINE

Title (de)

VERFAHREN ZUR REGELUNG DES KRAFTSTOFF-LUFT-VERHÄLTNISSES EINER BRENNKRAFTMASCHINE

Title (fr)

SYSTEME DE REGLAGE DU MELANGE AIR/CARBURANT DANS UN MOTEUR A COMBUSTION INTERNE

Publication

EP 0925433 A1 19990630 (DE)

Application

EP 97928228 A 19970618

Priority

  • DE 19636465 A 19960907
  • EP 9703166 W 19970618

Abstract (en)

[origin: WO9810183A1] The present invention relates to a method of controlling the air/fuel mixture in an internal combustion engine, wherein the output signal from a first Lambda probe located in the exhaust pipe upstream of a catalyst is carried to a controlling device which transmits a response output about the air/fuel mixture and then receives a correcting signal based on the output signal from the second Lambda probe situated downstream of the catalyst. In order to achieve such an accurate and adaptive control as to improve the air/fuel mixture in the sense of reducing gas emissions, the correcting signal is weighted in relation to the length of period of the output signal from the first Lambda probe.

IPC 1-7

F02D 41/14

IPC 8 full level

F02D 41/14 (2006.01)

CPC (source: EP US)

F02D 41/1441 (2013.01 - EP US); F02D 41/1474 (2013.01 - EP US); F02D 41/1487 (2013.01 - EP US)

Citation (search report)

See references of WO 9810183A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 9810183 A1 19980312; BR 9713196 A 19991103; DE 19636465 C1 19980430; DE 59703562 D1 20010621; EP 0925433 A1 19990630; EP 0925433 B1 20010516; US 6209314 B1 20010403

DOCDB simple family (application)

EP 9703166 W 19970618; BR 9713196 A 19970618; DE 19636465 A 19960907; DE 59703562 T 19970618; EP 97928228 A 19970618; US 25405399 A 19990226