Driving force generating method for motor vehicle, involves reversing polarity of magnetic field when element passes to position such that permanent magnets respectively repel and attract electro magnet to move element to other position

摘要

The method involves providing a device comprising a driving element (40) and a magnetic unit (20) with magnets (21, 22) e.g. permanent magnets. Polarity of magnetic field of a magnet (41) i.e. electro magnet, in the element and the unit is reversed when the element passes to a position such that the magnets (21, 22) respectively repel and attract the magnet (41) to move the element to another position. The polarity is reversed when the element passes to the latter position such that the magnets (22, 21) respectively repel and attract the magnet (41) to move the element to the former position.