Valve control device for an internal combustion engine and internal combustion engine comprising such a device
AssigneePeugeot Citroen Automobiles SA
InventorCédric Morin
Life of this patent
Estimating the term…
Abstract
The present invention pertains to a device for controlling a valve of an internal combustion engine, the device comprising an electromechanical actuator equipped with a magnet, and a processor controlling a defluxing current generating a magnetic field opposed to the magnetic field of the magnet, characterized in that it comprises means for controlling this defluxing current as a function of the open time of the valve and means for determining the rapidity of opening and/or closing of the valve from this open time, the controlled defluxing current ensuring the determined rapidity of opening and/or closing.
Claims9
A device for controlling a valve of an internal combustion engine, the device comprising an electromechanical actuator equipped with a permanent magnet, and a processor controlling a defluxing current to generate a magnetic field opposed to the magnetic field of the permanent magnet, wherein the device comprises means for controlling the defluxing current as a function of an open time of the valve and means for determining a switching time of the valve from at least one of (a) an open state to a closed state or (b) the closed state to the open state, as a function of a duration during which the valve is opened, such that said defluxing current is controlled in order to minimize energy consumption of the device and to maximize said switching time while still meeting operational needs of the engine.
An internal combustion engine equipped with a device for controlling a valve, the device comprising an electromechanical actuator equipped with a permanent magnet and a processor controlling a defluxing current to generate a magnetic field opposed to the magnetic field of the permanent magnet, wherein the engine comprises means for controlling the defluxing current as a function of an open time of the valve and means for determining a switching time of the valve from at least one of (a) an open state to a closed state or (b) the closed state to the open state, as a function of a duration during which the valve is opened, such that said defluxing current is controlled in order to minimize energy consumption of the device and to maximize said switching time while still meeting operational needs of the engine.
Dependencies are inferred from the claim text.