I once saw an engine study that uses solenoids in compensating engagements much like the internal combustion engine. It was a small contraption but it worked. It used 12v dc current. I am just wondering if the engine can produce enough electricity to recharge the battery it uses if an alternator or some kind of electric generator is attached to it. can this configuration be used to make an automobile engine? There were patents for such but I never saw one produced.