Adsorber temperature-estimating device for internal combustion e

Details Adsorber temperature-estimating device for internal combustion e Adsorber temperature-estimating device for internal combustion e

1994-12-28

1996-12-17

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60277, 60289, 60297, 731181, F01N 328

Patent

active

055841775

ABSTRACT:
An adsorber temperature-estimating device for an internal combustion engine comprises an adsorber arranged in the exhaust passage, for adsorbing an unburnt gas component present in exhaust gases emitted from the engine. Operating parameter sensors detect operating parameters of the engine, and an ECU estimates the temperature of the adsorber, based on the detected operating parameters. An exhaust gas-purifying system for the engine comprises the adsorber, a catalytic converter arranged in the exhaust passage at a location downstream of the adsorbing means, for purifying exhaust gases, and a secondary air supply pump for supplying secondary air to the exhaust passage at a location upstream of the catalytic converter. The ECU controls an amount of secondary air to be supplied to the exhaust passage, based on the estimated temperature calculated by the adsorber temperature-estimating device.

REFERENCES:
patent: 5158063 (1992-10-01), Hosoda

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