Process for the regeneration of the soot filter in a diesel exhaust engine system

Abstract

Abstract An arrangement of the soot filter in the exhaust system of a diesel engine (5) having a supercharger (2) is specified. At least one soot filter (11) is arranged in an exhaust line (4) of the diesel engine (5) and a regeneration device (9) for the soot filter (11) is provided, having at least one burner (10). In this case, the layout is designed such that the burner (10) of the regeneration device (9) is connected to the supercharger (2), so that the burner (11) is also supplied with the compressed air from the supercharger (2) of the diesel engine (5). In this case, the layout can be designed such that the burner (10) is supplied exclusively with compressed air from the supercharger (2) or such that the burner (10) is supplied with a mixture of compressed air and exhaust gas in the exhaust system of the diesel engine (5). This ensures that the burner (10) of the regeneration device (9) can always burn reliably throughout the complete engine operating envelope, without additional devices being required, it being possible to reduce the construction cost of such a soot filter. Multifilter systems, such as double filter systems, are also described which can have either a common burner as a regeneration device or separate burners. In this case as well, the burner can be operated either exclusively with compressed air from the supercharger or with an air mixture, i.e. with a mixture of exhaust gas and compressed air. <IMAGE>

Inventors

• 👤 Dieter Görlich

Bibliographic Details