TWENTY-FIVE years ago, a German book salesman named Felix Wankel entertained a revolutionary, if not heretical notion: he fell to wondering if the standard gasoline engine, man’s commonest prime mover ...

The reciprocating engine has been all the rage for at least three centuries. The first widely adopted engine of this type was the steam engine with a piston translating linear motion into rotational ...

Many experts believe power plants constructed with reciprocating engines are the ideal complement to intermittent renewables. Recip plants are extremely flexible. Facilities can be sized for almost ...