System for monitoring the efficiency of a catalyser, particularl

Details System for monitoring the efficiency of a catalyser, particularl System for monitoring the efficiency of a catalyser, particularl

1995-11-28

1998-02-10

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60277, 731181, F01N 328

Patent

active

057156786

ABSTRACT:
The efficiency of a catalyser is evaluated starting from output signals of two lambda probes disposed upstream and downstream respectively of the catalyser. In particular, a signal obtained by calculating the difference between the time averages obtained by integration and subsequent division for the duration of an integration window of output signals of these probes is used as the signal indicative of efficiency.

REFERENCES:
patent: 5099647 (1992-03-01), Hamburg
patent: 5228335 (1993-07-01), Clemmens et al.

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