Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1993-09-27
1995-01-17
Lazarus, Ira S.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60285, 123674, 123703, F01N 320
Patent
active
053816560
ABSTRACT:
A control system which controls engine air/fuel ratio and provides a measurement of efficiency in the catalytic converter coupled to the engine exhaust. Fuel delivered to the engine is adjusted by a feedback variable which is generated by integrating an output of an upstream exhaust gas oxygen sensor and trimmed by the output of a downstream exhaust gas oxygen sensor. For each cycle of the feedback variable, peak amplitude of the downstream sensor output is determined and squared. Similarly, the peak amplitude of the feedback variable for each of its cycles is squared. An indicating ratio of the square of the sum of the squares derived from the downstream sensor to the square of the sum of the squares derived from the feedback variable indicates converter efficiency.
REFERENCES:
patent: 3939654 (1976-02-01), Creps
patent: 4130095 (1978-12-01), Bowler
patent: 4304204 (1981-12-01), Glockler et al.
patent: 4526147 (1985-07-01), Grob
patent: 4831838 (1989-05-01), Nagai
patent: 5115639 (1992-05-01), Gopp
patent: 5207056 (1993-05-01), Benninger
patent: 5224345 (1993-07-01), Schnaibel et al.
patent: 5251437 (1993-10-01), Furuya
patent: 5255512 (1993-10-01), Hamburg et al.
patent: 5255515 (1993-10-01), Blumenstock et al.
patent: 5289678 (1994-03-01), Grutter
Orzel Daniel V.
Truong Tri T.
Zimlich Glenn A.
Ford Motor Company
Lazarus Ira S.
Lippa Allan J.
May Roger L.
O'Connor Daniel J.
LandOfFree
Engine air/fuel control system with catalytic converter monitori does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Engine air/fuel control system with catalytic converter monitori, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine air/fuel control system with catalytic converter monitori will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-741077