Abstract: A turbocharging system for an internal combustion engine includes a turbocharger having a shaft supported for rotation about an axis. The turbocharger also includes a turbine wheel mounted on the shaft and configured to be rotated about the axis by the exhaust gas, and a compressor assembly mounted on the shaft and configured to pressurize an airflow received from the ambient for delivery to the cylinder. The turbocharging system additionally includes an electric motor configured to generate electric motor torque. The turbocharging system further includes a one-way clutch configured to selectively connect the electric motor to the compressor assembly, such that the electric motor torque assists the turbocharger in generating boost pressure. An internal combustion engine employing such a turbocharging system is also disclosed.

Abstract: A turbocharging system for an internal combustion engine includes a turbocharger having a shaft supported for rotation about an axis. The turbocharger also includes a turbine wheel mounted on the shaft and configured to be rotated about the axis by the exhaust gas, and a compressor assembly mounted on the shaft and configured to pressurize an airflow received from the ambient for delivery to the cylinder. The turbocharging system additionally includes an electric motor configured to generate electric motor torque. The turbocharging system further includes a one-way clutch configured to selectively connect the electric motor to the compressor assembly, such that the electric motor torque assists the turbocharger in generating boost pressure. An internal combustion engine employing such a turbocharging system is also disclosed.

Abstract: A drive unit for a motor vehicle includes an internal combustion engine having a feeder line for feeding combustion air to the internal combustion engine and a compressor device that cooperates with the feeder line and by means of which the combustion air is compressed for the internal combustion engine. A bypass line opens into the feeder line, and through which the combustion air can be fed to the internal combustion engine without passing through the compressor device. An isolating mechanism associated with the bypass line serves to shut off and/or adjust the quantity of combustion air that flows through the bypass line. A control unit controls the isolating mechanism in such a manner that the isolating mechanism is at least partly closed or is caused to at least partly close when the internal combustion engine is in coasting mode.

Abstract: A driving device for driving a vehicle includes an internal combustion engine, a feed line for feeding combustion air to the internal combustion engine, a discharge line for discharging exhaust gases from the internal combustion engine, a charge air cooler that is arranged in the feed line for cooling the combustion air, and a recirculation line branching off the discharge line for recirculating the exhaust gas from the discharge line into the feed line. The recirculation line includes a bypass line that the exhaust gas can be fed to the internal combustion engine through the charge air cooler and/or bypassing the charge air cooler.

Abstract: A drive device is disclosed for a motor vehicle having a combustion engine, a feed line for supplying combustion air to the combustion engine, and a compressor unit cooperating with the feed line for compressing combustion air for the combustion engine. One or more torque generators are operable independently of the combustion engine and selectively coupled to the compressor unit. A control unit is configured to actuate the torque generator in such manner that the torque generator drives the compressor unit at least for a time before the start of the combustion engine.

Abstract: A driving device for driving a vehicle includes an internal combustion engine, a feed line for feeding combustion air to the internal combustion engine, a discharge line for discharging exhaust gases from the internal combustion engine, a charge air cooler that is arranged in the feed line for cooling the combustion air, and a recirculation line branching off the discharge line for recirculating the exhaust gas from the discharge line into the feed line. The recirculation line includes a bypass line that the exhaust gas can be fed to the internal combustion engine through the charge air cooler and/or bypassing the charge air cooler.

Abstract: A drive unit for a motor vehicle includes an internal combustion engine having a feeder line for feeding combustion air to the internal combustion engine and a compressor device that cooperates with the feeder line and by means of which the combustion air is compressed for the internal combustion engine. A bypass line opens into the feeder line, and through which the combustion air can be fed to the internal combustion engine without passing through the compressor device. An isolating mechanism associated with the bypass line serves to shut off and/or adjust the quantity of combustion air that flows through the bypass line. A control unit controls the isolating mechanism in such a manner that the isolating mechanism is at least partly closed or is caused to at least partly close when the internal combustion engine is in coasting mode.

Abstract: The invention relates to a control process for charge flow management devices as arranged in the intake area of the inlet ports of direct-injection internal combustion engines and port-injection type internal combustion engines having intake ports into which no fuel is injected. The process is characterized by the fact that the charge flow management devices are not closed when the engine operates on overrun. This reduces fouling on the intake valves produced by fuel and lubricant residue.

Abstract: The invention relates to a control process for charge flow management devices as arranged in the intake area of the inlet ports of direct-injection internal combustion engines and port-injection type internal combustion engines having intake ports into which no fuel is injected. The process is characterized by the fact that the charge flow management devices are not closed when the engine operates on overrun. This reduces fouling on the intake valves produced by fuel and lubricant residue.