ENGINE BRAKING METHOD FOR A PRESSURE-CHARGED COMBUSTION ENGINE AND DEVICE FOR MODULATING THE ENGINE BRAKING POWER OF A MOTOR VEHICLE HAVING A PRESSURE- CHARGED COMBUSTION ENGINE

摘要

The invention relates to an engine braking method for a pressure-charged combustion engine having an exhaust turbocharger. The invention furthermore relates to a device for modulating the engine braking power of a motor vehicle having a pressure-charged com- bustion engine. According to the invention, the exhaust turbocharger is an electric-motor-assisted exhaust turbocharger, wherein setting of the desired or demanded engine braking power is accomplished by accelerating a rotor of the exhaust turbocharger by electric-motor operation (S4) of the exhaust turbocharger and/or by braking the rotor 11, 12, 13 by generator-type operation (S5) of the exhaust turbocharger. (Figure 2)