Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1997-03-26
1998-12-15
Argenbright, Tony M.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60277, F01N 320, F02D 4114, F02D 4122
Patent
active
058485279
ABSTRACT:
The object of the present invention is to provide an apparatus for detecting the deterioration of a converter enabled to avoid a misjudgement even though the balance between the oxygen absorbing power and the oxygen releasing power disappears. The present apparatus is furnished with an upstream air-fuel ratio sensor installed at the upstream side of the converter and a downstream air-fuel ratio sensor installed at the downstream side of the converter. The deterioration of the converter is detected in accordance with the trajectory lengths of these sensors, and a parameter which denotes the oxygen balance of the converter is calculated in accordance with the outputs of these sensors. When the value of the parameter is outside a fixed lower limit or a fixed upper limit, the detection for deterioration is inhibited in order to prevent a misjudgement occuring.
REFERENCES:
patent: 5279116 (1994-01-01), Shimizu et al.
patent: 5282383 (1994-02-01), Kayanuma
patent: 5301501 (1994-04-01), Shimizu et al.
patent: 5303548 (1994-04-01), Shimizu et al.
patent: 5359853 (1994-11-01), Shimizu
patent: 5377484 (1995-01-01), Shimizu
patent: 5412941 (1995-05-01), Suzuki et al.
patent: 5414996 (1995-05-01), Sawada
patent: 5417058 (1995-05-01), Shimizu
patent: 5426937 (1995-06-01), Ohuchi et al.
patent: 5684248 (1997-11-01), Iwata
patent: 5724809 (1998-03-01), Mitsutani et al.
patent: 5732553 (1998-03-01), Mitsutani
patent: 5737916 (1998-04-01), Mitsutani
patent: 5743086 (1998-04-01), Nagai
patent: 5752382 (1998-05-01), Hanafusa et al.
Argenbright Tony M.
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Apparatus for detecting deterioration of a three-way catalytic c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for detecting deterioration of a three-way catalytic c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting deterioration of a three-way catalytic c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1450003