Particulate trap system and method

Details Particulate trap system and method Particulate trap system and method

2011-08-09

2011-08-09

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S274000, C060S281000, C060S287000, C060S292000, C060S297000

Reexamination Certificate

active

07992382

ABSTRACT:
A particulate trap system for an internal combustion engine includes a plurality of contiguous porous walls, and a remotely actuated relief valve downstream of said trap for periodically creating a reverse pressure throughout the exhaust system upstream of the relief valve and including said trap. A reversing apparatus periodically creates a reverse pressure drop across a portion of the contiguous porous walls of said trap to dislodge accumulated particulate and cause a portion of the filtered exhaust gas to flow back through said portion of the contiguous porous walls to remove particulate therefrom. A control system actuates the relief valve and the reversing apparatus. In one embodiment the system is utilized on a vehicle and the reversing apparatus includes a relief valve that is also operative as an exhaust brake. Regeneration includes the steps of: creating a backpressure in the entire exhaust system from a location downstream of the trap; creating a reverse pressure drop across only a portion of the porous walls to dislodge accumulated particulate therefrom; and causing a portion of filtered exhaust gas to flow back through said portion of the porous walls to carry the dislodged particulate out of the trap.

REFERENCES:
patent: 3899326 (1975-08-01), Frost et al.
patent: 3919384 (1975-11-01), Cantaloupe et al.
patent: 3954672 (1976-05-01), Somers et al.
patent: 4129429 (1978-12-01), Humbert, Jr. et al.
patent: 4276071 (1981-06-01), Outland
patent: 4343604 (1982-08-01), Minjolie et al.
patent: 4390355 (1983-06-01), Hammond, Jr. et al.
patent: 4416676 (1983-11-01), Montierth
patent: 4419108 (1983-12-01), Frost et al.
patent: 4420316 (1983-12-01), Frost et al.
patent: 4423090 (1983-12-01), Hammond, Jr. et al.
patent: 4427423 (1984-01-01), Montierth
patent: 4478618 (1984-10-01), Bly et al.
patent: 4544388 (1985-10-01), Rao et al.
patent: 4557682 (1985-12-01), Montierth
patent: 4622051 (1986-11-01), Polach et al.
patent: 4649703 (1987-03-01), Dettling et al.
patent: 4731010 (1988-03-01), Cunningham
patent: 4741792 (1988-05-01), Matsuhisa
patent: 4752516 (1988-06-01), Montierth
patent: 4791792 (1988-12-01), Naruse et al.
patent: 4812276 (1989-03-01), Chao
patent: 4823549 (1989-04-01), Moser
patent: 4835963 (1989-06-01), Hardy
patent: 4857089 (1989-08-01), Kitagawa et al.
patent: 4858431 (1989-08-01), Leonhard et al.
patent: 4864821 (1989-09-01), Hoch
patent: 4875336 (1989-10-01), Hayashi et al.
patent: 4923487 (1990-05-01), Bogart et al.
patent: 5009065 (1991-04-01), Howe et al.
patent: 5013340 (1991-05-01), Taslim et al.
patent: 5016437 (1991-05-01), Huether et al.
patent: 5019142 (1991-05-01), Waschkuttis
patent: 5123243 (1992-06-01), Baddour
patent: 5174969 (1992-12-01), Fischer et al.
patent: 5227105 (1993-07-01), Eucker et al.
patent: 5228892 (1993-07-01), Akitsu et al.
patent: 5238472 (1993-08-01), Pfister et al.
patent: 5240485 (1993-08-01), Haerle et al.
patent: 5240663 (1993-08-01), Stringaro et al.
patent: 5246472 (1993-09-01), Herman et al.
patent: 5253476 (1993-10-01), Levendis et al.
patent: 5318323 (1994-06-01), Pietz
patent: 5357755 (1994-10-01), Gillingham et al.
patent: 5367889 (1994-11-01), Lanyon
patent: 5426936 (1995-06-01), Levendis et al.
patent: 5487863 (1996-01-01), Cunningham et al.
patent: 5489319 (1996-02-01), Tokunda et al.
patent: 5497620 (1996-03-01), Stobbe
patent: 5552102 (1996-09-01), Kragle et al.
patent: 5566545 (1996-10-01), Hijkata et al.
patent: 5571298 (1996-11-01), Buck
patent: 5606854 (1997-03-01), Hoffmann
patent: 5638926 (1997-06-01), McCrickard
patent: 5702659 (1997-12-01), Kragle et al.
patent: 5725618 (1998-03-01), Shimoda et al.
patent: 5851249 (1998-12-01), Henda
patent: 5853438 (1998-12-01), Igarashi
patent: 5930994 (1999-08-01), Shimato et al.
patent: 5930995 (1999-08-01), Watanabe et al.
patent: 6010547 (2000-01-01), Jeong et al.
patent: 6148613 (2000-11-01), Klopp et al.
patent: 6233926 (2001-05-01), Bailey et al.
patent: 6989045 (2006-01-01), Bailey et al.
patent: 7314501 (2008-01-01), Fayard
patent: 04-031613 (1992-02-01), None
www.dieselnet.com/tech/dpf—regen.html; Diesel Filter Regeneration [subscription], pp. 1-18; DieselNet Technology Guide, Diesel Particulate Filters; Revision 2005.06a.
www.dieselnet.com/tech/dpf—wall-flow.html; Wall-Flow Monolith [subscription], pp. 1-30; DieselNet Technology Guide, Diesel Filter Materials; Revision 2005.09.
www.usgear.cc/dcelerator.htm; D-Celerator Diesel Exhaust Brake; Copyright 2006 AP Products, Inc.

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