Air-fuel ratio control system for internal combustion engines an

Details Air-fuel ratio control system for internal combustion engines an Air-fuel ratio control system for internal combustion engines an

1995-03-23

1997-10-21

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60277, 60285, F01N 328

Patent

active

056784023

ABSTRACT:
An air-fuel ratio control system for an internal combustion engine has a catalytic converter arranged in an exhaust passage. A maximum oxygen storage amount indicative of the maximum amount of oxygen that can be stored in the catalytic converter is calculated. The air-fuel ratio of a mixture supplied to the engine is forcibly oscillated at a predetermined frequency and a predetermined amplitude. At least one of the predetermined frequency and the predetermined amplitude is changed at a predetermined rate of change. A predetermined rate of change of the at least one of the predetermined frequency and the predetermined amplitude is set in dependence on the maximum oxygen storage amount to thereby secure the maximum purification rate of the catalytic converter.

REFERENCES:
patent: 4656829 (1987-04-01), Creps
patent: 5077970 (1992-01-01), Hamburg
patent: 5158063 (1992-10-01), Hosoda
patent: 5303168 (1994-04-01), Cullen
patent: 5462037 (1995-10-01), Hasegawa

Affiliated with

Also associated with

Rating

Air-fuel ratio control system for internal combustion engines an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air-fuel ratio control system for internal combustion engines an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air-fuel ratio control system for internal combustion engines an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-998063