Measuring and testing – Gas analysis – Gas of combustion
Patent
1998-05-28
2000-10-17
McCall, Eric S.
Measuring and testing
Gas analysis
Gas of combustion
731181, 60276, F01N 320
Patent
active
061314390
ABSTRACT:
A catalyst system employed in the exhaust stream of an internal combustion engine (10) wherein the catalyst deterioration is monitored by an engine controller (26) connected to a first oxygen sensor (22) mounted upstream of a catalyst (18) and a second oxygen sensor (24) mounted downstream. After a cold start of the engine (10) a calibration of the first and second sensors is conducted, to assure accuracy between the two sensors and determine if one of the sensors has failed, and also a light-off time for the catalyst (18) is determined as one way to measure the deterioration of the catalyst. After the engine (10) has warmed up to operating temperature, a test is run to determine the ability of the catalyst (18) to store oxygen therein, being another indication of catalyst deterioration.
REFERENCES:
patent: 5267472 (1993-12-01), Schneider et al.
patent: 5311737 (1994-05-01), Komatsu et al.
patent: 5351484 (1994-10-01), Wade
patent: 5414996 (1995-05-01), Sawada et al.
patent: 5419122 (1995-05-01), Tabe et al.
patent: 5531069 (1996-07-01), Katsuhiko
patent: 5591905 (1997-01-01), Fujimoto et al.
patent: 5655363 (1997-08-01), Ito et al.
patent: 5675967 (1997-10-01), Ries-Mueller
patent: 5684248 (1997-11-01), Iwata
Hamburg Douglas Ray
Meyer Daniel Lawrence
Drouillard Jerome R.
Ford Global Technologies Inc.
McCall Eric S.
LandOfFree
Catalyst deterioration detection with sensor calibration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst deterioration detection with sensor calibration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst deterioration detection with sensor calibration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-458024