Device and method for controlling the injection of air and exhaust gas at the intake of a supercharged internal-combustion engine
AssigneeIfp Energies Nouvelles
InventorsThierry Colliou, Bruno Walter, Stephane Venturi
Life of this patent
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Abstract
The present invention relates to a device for controlling the amount of air fed to the intake of a turbocharged internal-combustion engine comprising a turbocharging system including a turbocharger (7) with a turbine (8) connected to at least one exhaust gas outlet of said engine, as well as an outside air compressor (10), a line (15, 18) for partial transfer of the compressed air from the compressor to the turbine inlet, and an EGR line (18, 21) between an exhaust gas outlet and a compressed air intake line (4). The device is characterized in that the partial transfer line and the EGR line share at least one common portion (18).
Claims8
A device for controlling the amount of air fed to the intake of a turbocharged internal-combustion engine comprising:
- a turbocharging system including a turbocharger with a turbine connected to at least one exhaust gas outlet of the engine, and an outside air compressor,
- a partial compressed air transfer line for partial transfer of compressed air from the outside air compressor to an inlet of the turbine,
- an exhaust gas recirculation line between an exhaust gas outlet of the internal-combustion engine and a compressed air intake line of the internal-combustion engine, and
- a controlled throttling system for controlling the exhaust gas recirculation or the partial compressed air transfer to the turbine inlet comprising a proportional valve on the exhaust gas recirculation line and a proportional valve on the partial compressed air transfer line,
- wherein the partial compressed air transfer line and the exhaust gas recirculation line share at least one common portion.
A method for controlling the amount of air fed to the intake of a turbocharged internal-combustion engine comprising a turbocharging system including a turbocharger with a turbine connected to at least one exhaust gas outlet of the engine, and an outside air compressor, a partial compressed air line for partial transfer of compressed air from the compressor to an inlet of the turbine, an exhaust gas recirculation line between an exhaust gas outlet of the internal-combustion engine and a compressed air intake line of the internal-combustion engine, and a controlled throttling system for controlling the exhaust gas recirculation or the partial compressed air transfer to the turbine inlet comprising a proportional valve on the exhaust gas recirculation line and a proportional valve on the partial compressed air transfer line, wherein a shared line portion is used for the partial compressed air transfer line and the exhaust gas recirculation line.
Dependencies are inferred from the claim text.