| 摘要 |
<p>The invention relates to the use of a combustion fuel that differs from diesel or diesel cleavage products, in particular monoethylene glycol and/or methanol, for enriching exhaust gas in front of a particulate filter (19) of a diesel engine (11), in order to heat the exhaust gas by means of a catalytic oxidation of this combustion fuel to a temperature sufficient for a regeneration of the particulate filter (19). It also relates to the device that permits this use and to this end comprises a combustion fuel tank (25) and a combustion fuel line (27) connected to an exhaust gas train (17) of a diesel engine (11), the combustion fuel tank (25) of which is not the diesel tank (15) of the diesel engine. Furthermore, the invention can also comprise the diesel engine (11) and the tank (15) thereof, as well as the exhaust gas train (17) with the particulate filter (19). The concept common to all of these aspects of the invention is expressed in the method that is characterized by the steps that a combustion fuel, in particular methanol and/or ethylene glycol is added to the exhaust gas of a diesel engine (11) in front of its particulate filter (19), so that it in a gaseous state oxidizes on the catalyst surface (21) and thereby heats the exhaust gas to a temperature at which the regeneration of the particulate filter can be carried out. Due to the combustion fuel tank (25) separate from the propellant fuel tank (15), a combustion fuel can be used for this purpose which reacts with the catalyst (21) at exhaust temperatures too low for diesel.</p> |
