Ifp Energies Nouvelles

Olivier Baudrand

Thierry Colliou

Jean-Marc Zaccardi

Control of a quantity of air introduced into an intake of a supercharged internal combustion engine which includes a proportional valve located in a partial transfer duct which controls flow of compressed air flow through the partial transfer duct into an inlet of a turbine. The proportional valve is controlled to move between open and closed positions in accordance with strategies in accordance with stabilized phases of operation of the engine. Characteristics of stabilized phases of operation of the engine are determined and are used to control circulation of the compressed air during transitions between the stabilized phases of engine operation in accordance with the determined characteristics of the stabilized phases of the engine operation. The determined characteristics are derived from a previously completed mapping of speed and charging of the supercharged engine during a previous stabilized phase.

Method for controlling the quantity of air introduced to the intake of a supercharged internal combustion engine by a single-inlet turbocompressor

The present invention controls the amount of air fed to the intake of a supercharged internal-combustion engine. The engine includes two exhaust gas outlets () each connected to an exhaust manifold () of a group of at least one cylinder (), a turbocharger with a dual-inlet () turbine () connected to the exhaust gas outlets, and to an outside air compressor (), and a duct () for partial transfer of the compressed air from the compressor to the turbine inlets. Two branches () of the partial transfer duct, are connected to the turbine inlets. Each branch carries proportional throttle (), and the compressed air circulation in the branches is controlled during transient operation phases according to strategies applied to the proportioned throttle valves and determined in accordance with the stabilized phase characteristics.

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Paris, France

Olivier Baudrand