'method relating to hc dosing systems and device of hc dosing systems'

摘要

method relating to hc dosing systems and device of hc dosing systems. The present invention relates to a method relating to an HC metering system for exhaust gas cleaning of an engine (150) comprising a metering unit (250) for supplying a fuel to an exhaust duct (240). , which comprises the step of determining (s340) whether there is an undesired temperature level of said dosage unit (250). The method also comprises the step, if there is said undesired temperature level, of removing (s360) the heated fuel from said metering unit (250) by providing it to said exhaust duct (240), which involves - calculate (s350) and remove an amount of fuel that is removable based on a prevailing dosage unit temperature (250), or - remove (s360) a predetermined amount as substantially all heated fuel from the dosage unit (250) for said exhaust duct. The invention also relates to a computer program product containing a computer program code (p) (200; 210) for implementing a method according to the invention. The invention also relates to a device and a motor vehicle (100) that is equipped with the device.