continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6802/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :07/08/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : "METHOD AND DEVICE FOR REGENERATING THE PARTICLE FILTER OF AN INTERNAL
COMBUSTION ENGINE DURING THE TRANSIENT OPERATING PHASES THEREOF"
(51) International classification :F01N 9/00 (71)Name of Applicant :
(31) Priority Document No :0601458
1)RENAULT S.A.S
(32) Priority Date :20/02/2006
Address of Applicant :13-15, QUAI ALPHONSE LE GALLO,
(33) Name of priority country :France
F-92100 BOULOGNE BILLANCOURT, FRANCE. France
(86) International Application No :PCT/FR2007/050734 (72)Name of Inventor :
Filing Date
:01/02/2007
1)MARC DANEAU
(87) International Publication No :WO 2007/096544
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
The invention relates to a method for regenerating a particle filter on the exhaust line of an internal combustion engine, in which fuel
is injected into the exhaust tube upstream of an oxidation catalyst which is disposed upstream of the particle filter. The invention is
characterised in that durinc regeneration: the injection of fuel into the exhaust tube is interrupted when the operation of the engine
enters a critical /.one (S2) defined by maximum load and speed limit values; the injection of fuel is re-established when the operation
of the engine returns to the non-critical zone (S1); and. during the transient operating phases between the two zones (S1. S2). the
volume flow rate of the exhaust gases is measured and, as a function of said measurement, the fuel injection rate is reduced or the fuel
injection is deferred.
No. of Pages : 17 No. of Claims : 8
The Patent Office Journal 24/10/2008 26241