Exhaust gas purification system for internal combustion...

Details Exhaust gas purification system for internal combustion... Exhaust gas purification system for internal combustion...

2007-06-18

2011-10-18

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S274000, C060S285000, C060S295000, C060S290000

Reexamination Certificate

active

08037675

ABSTRACT:
A PM catalyst regeneration control for the purpose of “soot removal” is performed prior to a sulfur poisoning recovery control. In the PM catalyst regeneration control, PM deposits in a catalyst are burned. A target throttle opening degree for the sulfur poisoning recovery control is preset smaller than a target throttle opening for the PM catalyst regeneration control in order to reduce the intake air volume during deceleration. A catalyst bed temperature is thus prevented from dropping, and therefore maintained at a level appropriate to sulfur poisoning recovery. Controlling the intake air volume during deceleration in such a manner results in more efficient catalyst recovery from sulfur poisoning, so that the fuel economy is maintained during the sulfur poisoning recovery control.

REFERENCES:
patent: 2005/0022514 (2005-02-01), Kitahara
patent: 2005/0050881 (2005-03-01), Toshioka et al.
patent: 2005/0120712 (2005-06-01), Tsutsumoto et al.
patent: 199 45 336 (2001-03-01), None
patent: 10 2005 014 872 (2005-11-01), None
patent: 2005 014 872 (2005-11-01), None
patent: 1 154 130 (2001-11-01), None
patent: 1 174 600 (2002-01-01), None
patent: 1 365 117 (2003-11-01), None
patent: 1 510 671 (2005-03-01), None
patent: 2005-155500 (2005-06-01), None
Office Action from the German Patent Office for DE 102007027886, dated Aug. 10, 2009.
French Patent Office Communication dated Feb. 16, 2011 for FR 07 04299.

Affiliated with

Also associated with

Rating

Exhaust gas purification system for internal combustion... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exhaust gas purification system for internal combustion..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas purification system for internal combustion... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4271145