Abstract: A method for operating an exhaust burner, which is situated in an exhaust system downstream from an internal combustion engine of a motor vehicle. Prior to and during a start phase of the exhaust burner, an air-mass flow supplied to a combustion chamber of the exhaust burner is increased, in particular in a strictly monotonical manner, between a start time in a starting air-mass flow and a further time in a further air-mass flow. Prior to the further time, fuel is supplied to the combustion chamber. A fuel-air mixture is produced in the combustion chamber from the fuel and air of the air-mass flow. The fuel-air mixture is ignited with the aid of an ignition device which is continuously hot or forms ignition sparks intermittently.

Abstract: A method for operating an exhaust gas burner that is situated in an exhaust gas system downstream from an internal combustion engine of a motor vehicle during a start phase of the exhaust gas burner, in which the internal combustion engine is not fired. The method includes an incremental increasing of the air mass flow supplied to the exhaust gas burner and an incremental varying of a fuel mass flow supplied to the exhaust gas burner.

Abstract: A method for operating an exhaust gas burner that is situated in an exhaust gas system downstream from an internal combustion engine of a motor vehicle during a start phase of the exhaust gas burner, in which the internal combustion engine is not fired. The method includes an incremental increasing of the air mass flow supplied to the exhaust gas burner and an incremental varying of a fuel mass flow supplied to the exhaust gas burner.