ELECTROMAGNET-EQUIPPED CONTROL DEVICE FOR AN INTERNAL COMBUSTION ENGINE VALVE

摘要

The invention relates to a device for controlling the opening and closing of an internal combustion engine valve (40). The inventive device is characterised in that the magnetic circuit (29) of the electromagnet (28) and/or the plate (26) includes a magnetic material having a remanent magnetisation (Fp) when the valve (38) is in position. According to the invention, the remanent magnetisation (Fp) (i) is reversible such as to be cancelled when the valve (38) changes position and (ii) has a coercive field strength of between 10 Oersted and 600 Oersted.