Air-fuel ratio sensor monitor, air-fuel ratio detector, and...

Details Air-fuel ratio sensor monitor, air-fuel ratio detector, and... Air-fuel ratio sensor monitor, air-fuel ratio detector, and...

2007-07-24

2007-07-24

Wolfe, Willis R. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S690000, C060S285000, C073S118040

Reexamination Certificate

active

11520812

ABSTRACT:
An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.

REFERENCES:
patent: 5119629 (1992-06-01), Kume et al.
patent: 5212947 (1993-05-01), Fujimoto et al.
patent: 5454259 (1995-10-01), Ishii et al.
patent: 5634454 (1997-06-01), Fujita
patent: 5758632 (1998-06-01), Yamashita et al.
patent: 5964208 (1999-10-01), Yamashita et al.
patent: 6032659 (2000-03-01), Yamashita et al.
patent: 6718252 (2004-04-01), Kawai et al.
patent: 6920751 (2005-07-01), Yasui et al.
patent: 2-11841 (1990-01-01), None
patent: 2-67443 (1990-03-01), None
patent: 4-237851 (1992-08-01), None
patent: 10-169501 (1998-06-01), None
patent: 2002-130020 (2002-05-01), None

Affiliated with

Also associated with

Rating

Air-fuel ratio sensor monitor, air-fuel ratio detector, and... 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 sensor monitor, air-fuel ratio detector, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air-fuel ratio sensor monitor, air-fuel ratio detector, and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3796373