Apparatus for controlling internal combustion engine having elec

Details Apparatus for controlling internal combustion engine having elec Apparatus for controlling internal combustion engine having elec

1996-12-05

1998-06-16

Argenbright, Tony M.

Power plants

Internal combustion engine with treatment or handling of...

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

60286, 60300, 219202, 422174, F01N 320

Patent

active

057653712

ABSTRACT:
An apparatus for controlling an internal combustion engine having an electrically heated catalyst heats the catalyst with sufficient power without fluctuating the rotation speed of the engine. The apparatus has an alternator 2 driven by the engine 1, an intake controller 3 disposed in an intake system of the engine 1, to change the quantity of intake air, a battery 8 charged by the alternator 2, the catalyst 4 disposed in an exhaust system of the engine 1 and powered by the battery 8 and alternator 2, and a regulator 7 for changing the field current of the alternator 2, to change power to be generated by the alternator 2. When activating the catalyst 4, the intake controller 3 increases the quantity of intake air, and the regulator 7 increases power to be generated by the alternator 2. Increasing the field current of the alternator 2 is delayed behind increasing the quantity of intake air. Alternatively, increasing the quantity of intake air as well as the field current of the alternator 2 are carried out gradually.

REFERENCES:
patent: 5321231 (1994-06-01), Schmalzriedt et al.
patent: 5609024 (1997-03-01), Fujiwara et al.
Liang, P. M., "Development of an Alternator-Powered Electrically-Heated Catalyst System", SAE Paper 941042, Feb. 1994.

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