Global Patent Index - EP 0150182 A4

EP 0150182 A4 19851219 - MEASURING AN EXTENDED RANGE OF AIR FUEL RATIO.

Title (en)

MEASURING AN EXTENDED RANGE OF AIR FUEL RATIO.

Title (de)

MESSEN EINER AUSGEDEHNTEN SPANNE EINES LUFT/BRENNSTOFFVERHÄLTNISSES.

Title (fr)

MESURE D'UNE PLAGE ETENDUE DE RAPPORTS AIR/CARBURANT.

Publication

EP 0150182 A4 19851219 (EN)

Application

EP 83903021 A 19830718

Priority

US 8301098 W 19830718

Abstract (en)

[origin: WO8500659A1] A method of using selected portions of an exhaust gas sensor (110) having a substantially enclosed volume, v, between two electrochemical cells (111, 121). One electrochemical cell (111) is exposed to an exhaust gas and another electrochemical cell (121) is exposed to a reference atmosphere. An air/fuel ratio rich of stoichiometry uses electrochemical cell (121) as an oxygen pump, electrochemical cell (111) as a voltage generator, and the reference atmosphere as a source of oxygen. An air/fuel ratio lean of stoichiometry uses electrochemical cell (121, or 111) as an oxygen pump, electrochemical cell (111, or 121) as a voltage generator, and the ambient adjacent the oxygen pump as a sink oxygen. An air/fuel ratio at stoichiometry uses electrochemical cell (121) as a voltage generator.

IPC 1-7

G01N 27/58

IPC 8 full level

G01N 27/27 (2006.01); G01N 27/409 (2006.01); G01N 27/413 (2006.01); G01N 27/417 (2006.01)

CPC (source: EP)

G01N 27/417 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE GB NL

DOCDB simple family (publication)

WO 8500659 A1 19850214; EP 0150182 A1 19850807; EP 0150182 A4 19851219; JP S60501872 A 19851031

DOCDB simple family (application)

US 8301098 W 19830718; EP 83903021 A 19830718; JP 50307183 A 19830718