METHOD AND APPARATUS FOR RAISING THE EXHAUST GAS TEMPERATURE IN THE EXHAUST PIPE OF A TURBOCHARGED INTERNAL COMBUSTION ENGINE

The method involves supplying defined or sufficient amount of charging air into a burner (10) from a boost pressure line (2) of the internal combustion engine (1), if boost pressure is high. The air heated by burner is supplied to exhaust line(7) arranged upstream of exhaust gas purification unit (8). The waste gas stream from exhaust line (13) arranged upstream of exhaust turbine (5), is supplied to the burner, if the boost pressure is not so high during operating state of the internal combustion engine. Independent claims are included for the following: (1) device for increasing exhaust gas temperature in exhaust gas system of turbocharged internal combustion engine; and (2) internal combustion engine for motor car.