Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1990-12-10
1992-10-27
Dolinar, Andrew M.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123696, F02D 4114
Patent
active
051580624
ABSTRACT:
The rich or lean status of an air/fuel control system is determined according to the difference between the time period that the normalized air/fuel ratio is greater than an upper limit and the time period that the normalized air/fuel ratio is less than a lower limit in equal number of successive rich and lean cycles when in closed-loop fuel operation. The degree of rich or lean of the system is proportional to the time period difference. An adaptive learning control correction factor is incremented or decremented by an adaptive amount proportional to the time period difference.
REFERENCES:
patent: 4224910 (1980-09-01), O'Brien
patent: 4306529 (1981-12-01), Chiesa et al.
patent: 4309971 (1982-01-01), Chiesa et al.
patent: 4354238 (1982-10-01), Manaka et al.
patent: 4401086 (1983-08-01), Miyagi
patent: 4461261 (1984-07-01), Isomura et al.
patent: 4594985 (1986-06-01), Fujimura et al.
patent: 4723522 (1988-02-01), Samuel
patent: 4739740 (1988-04-01), Ohkawara et al.
patent: 4867125 (1989-09-01), Grevemeyer
patent: 4976242 (1990-12-01), Sonoda et al.
Abolins Peter
Dolinar Andrew M.
Ford Motor Company
Sadler Clifford L.
LandOfFree
Adaptive air/fuel ratio control method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive air/fuel ratio control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive air/fuel ratio control method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-899992