Method and device for estimating a nitrogen oxide mass...

Details Method and device for estimating a nitrogen oxide mass... Method and device for estimating a nitrogen oxide mass...

2007-05-15

2007-05-15

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S109000, C060S274000, C060S277000

Reexamination Certificate

active

10562452

ABSTRACT:
The invention relates to a method of estimating a nitrogen oxide mass stored in a catalytic nitrogen oxide trapping device (1) which comprises a catalytic phase and which is traversed by the exhaust gases (2) from the internal combustion engine (3) of a motor vehicle (4) comprising an electronic control unit (5). The inventive method consists in: discretising the geometry of the catalytic trapping device (1) into several (n) perfectly-stirred, successive individual reactors (6, 7); and combining a thermal model, which can be used to calculate the temperature variation of the catalytic phase of the catalytic trapping device (1) during the traversing movement of the exhaust gases, and an absorption model, which can be used at any moment to calculate the nitrogen oxide mass stored in the catalytic trapping device (1) on the basis of the characteristics of said device (1), the temperatures from the thermal model for each individual reactor and the exhaust gas mass flow from the engine (3).

REFERENCES:
patent: 6742328 (2004-06-01), Webb et al.
patent: 7121086 (2006-10-01), Nishii et al.
patent: 199 07 382 (2000-08-01), None
patent: 001079084 (2001-02-01), None
patent: 99 36689 (1999-07-01), None
patent: 01 00972 (2001-01-01), None
patent: 01 00977 (2001-01-01), None
patent: WO 2004/092555 (2004-10-01), None

Affiliated with

Also associated with

Rating

Method and device for estimating a nitrogen oxide mass... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for estimating a nitrogen oxide mass..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for estimating a nitrogen oxide mass... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3800456