METHOD FOR OPERATING A DRIVE DEVICE AND CORRESPONDING DRIVE DEVICE
The invention relates to a method for operating a drive device (1) which has a drive assembly and an exhaust gas purification device (3) for purifying exhaust gas of the drive assembly, said purification device being arranged in an exhaust gas line (2), wherein the exhaust gas purification device (3) is at least intermittently heated by means of an electric heater arrangement (5) which has a heating element (6) for heating a fluid, and a bypass line which branches off from the exhaust gas line (2) on one side of the exhaust gas purification device (3) and opens into said line on the other side, in which bypass line (7) a fluid pump (8) for feeding the fluid through the exhaust gas purification device (3) is arranged. There is provision that, in order to heat the exhaust gas purification device (3) before the drive assembly starts, the fluid pump (8) is operated in order to cause fluid heated by means of the heating element (6) to flow through the exhaust gas purification device (3) counter to an exhaust gas flow direction through the exhaust gas line (2). The invention further relates to a drive device (1).