Exhaust gas cleaning system of internal combustion engine

Details Exhaust gas cleaning system of internal combustion engine Exhaust gas cleaning system of internal combustion engine

2005-09-13

2005-09-13

Nguyen, Tu M. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S276000, C073S023320

Reexamination Certificate

active

06941745

ABSTRACT:
An exhaust gas cleaning system has two catalysts and three sensors. The target voltage of a second sensor arranged upstream of a downstream catalyst is set according to the output voltage of the second sensor and the output voltage of a third sensor. Thus, even if the output voltage of the second sensor shows a stoichiometric condition and the output voltage of the third sensor shows a rich condition, it is possible to restrict the unnecessary correction of the target voltage and to optimize the cleaning rate of the downstream catalyst. Therefore, it is possible to reduce emission from being impaired by an expected variation in the air-fuel ratio.

REFERENCES:
patent: 5537817 (1996-07-01), Akazaki et al.
patent: 5657627 (1997-08-01), Akazaki et al.
patent: 6256981 (2001-07-01), Sullivan et al.
patent: 6256983 (2001-07-01), Yasui
patent: 6338243 (2002-01-01), Takaoka et al.
patent: 6539707 (2003-04-01), Ikemoto et al.
patent: 6622478 (2003-09-01), Nakamura
patent: B2-2946379 (1994-10-01), None

Affiliated with

Also associated with

Rating

Exhaust gas cleaning system of 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 Exhaust gas cleaning system of internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas cleaning system of internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3437950