Regulating strategy for an NOx trap

Details Regulating strategy for an NOx trap Regulating strategy for an NOx trap

1999-06-17

2000-10-24

Denion, Thomas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60286, 60295, 60303, F01N 300

Patent

active

061348821

ABSTRACT:
A method for operating an NOx trap for an internal combustion engine includes measuring parameters that influence the delay between the metering of a regenerating agent and its becoming effective in regenerating the NOx trap. Such parameters include the fuel film on an intake wall and the quantity of oxygen bonded in the catalytic converters upstream of the NOx trap. Measuring these parameters helps determine the quantity of regenerating agent or the number of working cycles required for regeneration of the NOx trap.

REFERENCES:
patent: 5546910 (1996-08-01), Messih et al.
patent: 5564393 (1996-10-01), Asano et al.
patent: 5690087 (1997-11-01), Schumacher et al.
patent: 5771685 (1998-06-01), Hepburn
patent: 5974791 (1999-11-01), Hirota et al.
patent: 6023929 (2000-02-01), Ma

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