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
Application
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
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)
- [X] GB 2097541 A 19821103 - FORD MOTOR CO
- [A] EP 0057899 A2 19820818 - HITACHI LTD [JP]
- [A] US 3699032 A 19721017 - RAPP ROBERT ANTHONY
- [A] US 3650934 A 19720321 - HICKAM WILLIAM M, et al
- [X] ANALYTICAL CHEMISTRY, vol. 49, no. 12, October 1977, pages 1813-1817, US; D.M. HAALAND: "Internal-reference solid-electrolyte oxygen sensor"
- See references of WO 8500659A1
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