Light-off catalyst monitor

Details Light-off catalyst monitor Light-off catalyst monitor

1993-12-16

1994-10-04

Cole, Richard R.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60276, 60277, F01N 320

Patent

active

053514840

ABSTRACT:
Monitoring a light-off catalyst in conjunction with an internal combustion engine includes providing exhaust gas oxygen sensors upstream and downstream of the light-off catalyst for monitoring operation of the catalyst. The monitoring is disabled when the mass air flow through the light-off catalyst is so high that the catalyst monitor is saturated and unable to detect the operation of the light-off catalyst.

REFERENCES:
patent: 3699683 (1972-10-01), Tourtellotte
patent: 3783619 (1974-01-01), Alquist
patent: 5083427 (1992-01-01), Anderson
patent: 5159810 (1992-11-01), Grutter et al.
patent: 5259189 (1993-11-01), Baier et al.
patent: 5267472 (1993-12-01), Schneider

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