Air-fuel ratio control system for internal combustion engine

Power plants – Internal combustion engine with treatment or handling of... – Having means analyzing composition of exhaust gas

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

123680, 123682, F02D 4114

Patent

active

053437012

ABSTRACT:
An air-fuel ratio control system for an internal combustion engine utilizes a pre-stored standard relation between an air-fuel ratio sensor signal and a standard air-fuel ratio indicative value for deriving the standard air-fuel ratio indicative value based on the sensor signal. The system further utilizes a pre-stored modified relationship between the standard air-fuel ratio indicative value and a for-control air-fuel ratio indicative value for deriving a for-control air-fuel ratio indicative value based on the derived standard air-fuel ratio indicative value. In the modified relationship, the for-control air-fuel ratio indicative value varies with respect to a corresponding variation of the standard air-fuel ratio indicative value within a given range across the standard air-fuel ratio indicative value representing a stoichiometric air-fuel ratio.

REFERENCES:
patent: 4779414 (1988-10-01), Nagai et al.
patent: 4917067 (1990-04-01), Yoshida
patent: 5090199 (1992-02-01), Ikuta et al.
patent: 5157920 (1992-10-01), Nakaniwa
Patent Abstracts of Japan, vol. 11, No. 76 (M-569) Mar. 7, 1987, abstract of JP-A-61232350.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Air-fuel ratio control system for internal combustion engine 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 engine, 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 engine will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1321934

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.