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1. (WO2011162691) METHOD AND DEVICE PERTAINING TO COOLING OF DOSING UNITS OF HC DOSING SYSTEMS FOR EXHAUST CLEANING

Pub. No.:    WO/2011/162691    International Application No.:    PCT/SE2011/050788
Publication Date: Dec 29, 2011 International Filing Date: Jun 20, 2011
IPC: F01N 3/025
F01N 3/36
F01N 9/00
F01N 11/00
Applicants: SCANIA CV AB
LILJESTRAND, Andreas
BREMBERG, Per
CARLSSON, Ulf
ERIKSSON, Lars
GUSTAFSSON, Erik
Inventors: LILJESTRAND, Andreas
BREMBERG, Per
CARLSSON, Ulf
ERIKSSON, Lars
GUSTAFSSON, Erik
Title: METHOD AND DEVICE PERTAINING TO COOLING OF DOSING UNITS OF HC DOSING SYSTEMS FOR EXHAUST CLEANING
Abstract:
The invention relates to a method pertaining to HC dosing systems for exhaust cleaning which comprise a dosing unit (250) for fuel, comprising the step of deciding about a need, after cessation of an exhaust flow, to cool said fuel dosing unit by means of fuel supplied to it, and the step of predicting a temperature pattern of the dosing unit (250) as a basis for deciding about said need, and predicting accordingly whether a predetermined temperature of the dosing unit (250) will be reached after said cessation of exhaust flow. The invention relates also to a computer programme product containing programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to an HC dosing system and a motor vehicle which is equipped with the HC dosing system.