Measuring and testing – Simulating operating condition – Marine
Patent
1998-05-28
1999-03-02
Dombroske, George
Measuring and testing
Simulating operating condition
Marine
60277, 73 2332, 701109, G01M 1500
Patent
active
058774130
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.
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Hamburg Douglas Ray
Meyer Daniel Lawrence
Dombroske George
Ford Global Technologies Inc.
Wilkinson Donald A.
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