Conversion efficiency measuring apparatus of catalyst used for e

Details Conversion efficiency measuring apparatus of catalyst used for e Conversion efficiency measuring apparatus of catalyst used for e

1992-03-19

1993-08-24

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60276, 60277, 60285, 731181, 123691, F01N 320

Patent

active

052378187

ABSTRACT:
A conversion efficiency of a catalyst is estimated by a correlation function concerning output signals of upper and down stream side air fuel ratio sensors. The conversion efficiency is measured by comparing the correlation function and a complement value of the correlation function with a comparing standard value.

REFERENCES:
patent: 3969932 (1976-07-01), Rieger
patent: 4622809 (1986-11-01), Abthoff
patent: 5154055 (1992-10-01), Nakane

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