Скачать или смотреть Dual piston magnetic engine concept

The principals:

1. Pair of magnets oriented face to face by same poles and repel each other, so they shifting out of the center.

2. When a metal plate places between the pair, the metal shorten the magnet field, and produce attraction force for both magnets so they shifting in to the center.

The metal plate should be operated by gear and reuse some of force produced by magnets.
All system will repeat same action (1and2) in a cycle.

The trek is to spend minimum energy for moving the metal plate between magnets, it is possibly if the pair of magnets get exactly same impact on metal plate and cancel influence of attraction force. If so the engine will produce mechanical force equal to magnet force of the permanent magnets.

If any one interesting to build a prototype of it, i will share more technical information.