Method for operating exhaust gas burner

The invention relates to a method for operating an exhaust gas burner (3) downstream of an internal combustion engine (1) and upstream of an exhaust gas catalyst (4), comprising: actuating an ignition device (12) of the exhaust gas burner (3) during a predeterminable preheating phase without feeding fuel (11) to the exhaust gas burner (3) during the preheating phase, and after the end of the preheating phase, feeding fuel (11) to the exhaust gas burner (3) and combusting the fed fuel (11) in the exhaust gas burner (3). The invention further relates to a computing unit and to a computer program product for carrying out such a method. 本发明涉及一种用于运行在内燃机（1）下游和废气催化器（4）上游的废气燃烧器（3）的方法，所述方法包括：在可预给定的预热阶段期间操控所述废气燃烧器（3）的点火装置（12），而不在所述预热阶段期间向所述废气燃烧器（3）输送燃料（11），以及在所述预热阶段结束后，向所述废气燃烧器（3）输送燃料（11）并且在所述废气燃烧器（3）中燃烧所输送的燃料（11）。此外还提出了用于执行这种方法的计算单元和计算机程序产品。