Liquid reductant dosing module with heating device

(19)

(11)

EP 2 336 514 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	13.03.2013 Bulletin 2013/11

(43)	Date of publication A2:
	22.06.2011 Bulletin 2011/25

(21)	Application number: 10193658.1

(22)	Date of filing: 03.12.2010

(51)

Int. Cl.:

F01N 3/20 ^(2006.01)
H05B 3/82 ^(2006.01)
B60S 1/48 ^(2006.01)

F02M 31/125 ^(2006.01)
F16L 53/00 ^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

(30)

Priority:

15.12.2009 US 638364

(71)	Applicant: Delphi Technologies, Inc.
	Troy, MI 48007 (US)

(72)	Inventors:
	Li, Bob Xiaobin Grand Blanc, MI 48439 (US) Ricci-Ottati, Giulio Angel Burton, MI 48509 (US)

(74)	Representative: Robert, Vincent
	Delphi France SAS Bât. le Raspail - ZAC Paris Nord 2 22, avenue des Nations CS 65059 Villepinte 95972 Roissy CDG Cedex 95972 Roissy CDG Cedex (FR)

(54)	Liquid reductant dosing module with heating device

(57) A liquid reductant dosing module for a combustion exhaust system (5) is disclosed comprising an enclosed reservoir comprising a top, a bottom, one or more sides, an inlet (25), and an outlet (27). A resistive wire rod heater is disposed in that reservoir, comprising a hollow member extending along a first axis between the bottom of the reservoir and the top of the reservoir. Along that member there is disposed resistive metal wire (39) such that when electric current is applied to the resistive metal wire (39), a greater portion of electric power is distributed as heat proximate to the bottom of the reservoir than is distributed as heat proximate to the top of the reservoir.