Double air-fuel ratio sensor system in internal combustion engin

Power plants – Internal combustion engine with treatment or handling of... – Methods

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

60276, 60285, 123688, 123691, 123479, F02D 4114

Patent

active

RE0339423

ABSTRACT:
In a double air-fuel ratio sensor system including two air-fuel ratio sensors upstream and downstream of a catalyst converter provided in an exhaust passage, the actual air-fuel ratio is adjusted in accordance with an air-fuel ratio correction amount calculated by using the output of the upstream-side air-fuel ratio sensor and an air-fuel ratio feedback control parameter such as delay time periods, skip amounts, or integration amounts calculated by using the output of the downstream-side air-fuel ratio sensor, and the calculation of the air-fuel ratio feedback control parameter is prohibited when the downstream-side air-fuel ratio sensor is in an abnormal state.

REFERENCES:
patent: 3939654 (1976-02-01), Creps
patent: 3962866 (1976-06-01), Neidhard et al.
patent: 4007589 (1977-02-01), Neidhard et al.
patent: 4027477 (1977-06-01), Storey
patent: 4127088 (1978-11-01), Ezoe
patent: 4130095 (1978-12-01), Bowler et al.
patent: 4177787 (1979-12-01), Hattori et al.
patent: 4235204 (1980-11-01), Rice
patent: 4244340 (1981-01-01), Herth et al.
patent: 4251989 (1981-02-01), Norimatsu et al.
patent: 4475517 (1984-10-01), Kobayashi et al.
patent: 4502443 (1985-03-01), Hasegawa et al.
patent: 4539958 (1985-09-01), Ito et al.
patent: 4561400 (1985-12-01), Hattori
patent: 4571683 (1986-02-01), Kobayashi et al.
patent: 4622809 (1986-11-01), Abthoff et al.

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

Double air-fuel ratio sensor system in internal combustion engin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double air-fuel ratio sensor system in internal combustion engin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double air-fuel ratio sensor system in internal combustion engin will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2220519

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