Air-fuel ratio feedback control method for internal combustion e

Details Air-fuel ratio feedback control method for internal combustion e Air-fuel ratio feedback control method for internal combustion e

1984-12-21

1986-10-21

Wolfe, Jr., Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123440, F02M 5100

Patent

active

046179011

ABSTRACT:
A method of controlling the air-fuel ratio of an air-fuel mixture being supplied to an internal combustion engine includes comparing the value of a signal indicative of the concentration of an exhaust gas ingredient with a predetermined reference value, detecting from the comparison result a first change in the air-fuel ratio of the mixture supplied to the engine from a value richer than a predetermined value to a value leaner than same, or a second change in the air-fuel ratio of the mixture from a value leaner than the predetermined value to a value richer than same, correcting the value of an air-fuel ratio control signal by increasing or decreasing same by a first predetermined correction value in response to the first change or the second change thus detected, and controlling the air-fuel ratio of the mixture in a feedback manner responsive to the value of the air-fuel ratio control signal thus corrected. A second predetermined correction value, in lieu of the first predetermined correction value, is applied to correction of the air-fuel ratio control signal in response to a selected one of the first change and the second change with a cycle a predetermined number of times as large as the fluctuation cycle of the exhaust gas ingredient concentration-indicative signal.

REFERENCES:
patent: 4488529 (1984-12-01), Nishida et al.
patent: 4498445 (1985-02-01), Hasegawa et al.
patent: 4517948 (1985-05-01), Kaji et al.
patent: 4526001 (1985-07-01), Burns et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1284850