Power plants – Internal combustion engine with treatment or handling of... – Having means analyzing composition of exhaust gas
Patent
1993-04-05
1994-08-30
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Having means analyzing composition of exhaust gas
60277, 60285, 123691, F01N 328
Patent
active
053416430
ABSTRACT:
An air/fuel control system which includes feedback control from an exhaust gas oxygen sensor positioned upstream of a catalytic converter. The exact air/fuel ratio required optimum converter efficiency is determined by generating an emissions signal from both a HC/CO sensor and a NO sensor each positioned downstream of the catalytic converter. The feedback variable is trimmed by a signal derived from the emissions signal to maintain air/fuel operation at a value corresponding to maximum converter efficiency.
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patent: 5259189 (1993-11-01), Baier
Article entitled "NO.sub.2 Gas-Concentration Measurement with a Saw-Chemosensor", IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. UFFC-34, No. 2, Mar. 1987, pp. 148-155; by Adrian Venema et al.
Hamburg Douglas R.
Logothetis Eleftherios M.
Soltis Richard E.
Visser Jacobus H.
Ford Motor Company
Hart Douglas
Lippa Allan J.
May Roger L.
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