Supercharged internal combustion engine having exhaust-gas recirculation arrangement and method for operating an internal combustion engine

摘要

Embodiments for an internal combustion engine having at least one cylinder, at least one exhaust line for discharging combustion gases via an exhaust-gas discharge system, and at least one intake line for supplying charge air via an intake system are provided. In one example, an internal combustion engine comprises an exhaust-gas recirculation arrangement which comprises a recirculation line which branches off from the exhaust-gas discharge system and which opens into the intake system, an exhaust-gas turbocharger comprising a compressor arranged in the intake system and a turbine arranged in the exhaust-gas discharge system, a throttle element which is arranged in the intake line downstream of the compressor, a bypass line which branches off from the intake line upstream of the throttle element and which opens into the intake line again downstream of the throttle element, and an expansion machine for gaining additional energy arranged in the bypass line.

主权项

1. A method of controlling an engine having non-transitory instructions stored in a control system to execute:
during select conditions comprising engine cold start conditions, closing a throttle bypass valve to route intake air to the engine via an intake turbine; and routing energy produced by a generator coupled to the intake turbine to a vehicle power grid.