Advanced engine management of individual cylinders for...

Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C123S679000, C701S109000

Reexamination Certificate

active

07469693

ABSTRACT:
A method and system controls engine-out exhaust species of a combustion engine having a plurality of cylinders. The method typically includes various combinations of steps such as controlling combustion parameters in individual cylinders, grouping the individual cylinders into a lean set and a rich set of one or more cylinders, combusting the lean set in a lean combustion parameter condition having a lean air:fuel equivalence ratio, combusting the rich set in a rich combustion parameter condition having a rich air:fuel equivalence ratio, and adjusting the lean set and the rich set of one or more cylinders to generate net-lean combustion. The exhaust species may have elevated concentrations of hydrogen and oxygen.

REFERENCES:
patent: 6263668 (2001-07-01), Yamashita et al.
patent: 6289877 (2001-09-01), Weisbrod et al.
patent: 6292739 (2001-09-01), Yasui et al.
patent: 6550465 (2003-04-01), Ueno et al.
patent: 6604504 (2003-08-01), Surnilla et al.
patent: 6978204 (2005-12-01), Surnilla et al.
patent: 7027906 (2006-04-01), Araki
patent: 7239954 (2007-07-01), Huang
J. P. Breen, et al., “An investigation of the thermal stability and sulphur tolerance of Ag/gamma-AI2O3 catalysts for the SCR of NOx with hydrocarbons and hydrogen”, Applied Catalysis B-Environmental, 2007, pp. 36-44, vol. 70 (1-4.
R. Burch and M. D. Coleman, “An investigation of promoter effects in the reduction of NO by H-2 under lean-burn conditions”, Journal of Catalysis, 2002, pp. 435-447, vol. 208 (2).
L. Fu and K. T. Chuang, “Control of NOx Emissions by Selective Catalytic Reduction with Hydrogen over Hydrophobic Catalysts”, Energy & Fuels, 1989, pp. 740-743, vol. 3.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Advanced engine management of individual cylinders for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Advanced engine management of individual cylinders for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Advanced engine management of individual cylinders for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4045914

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.