EIGHT-CYLINDER PLUNGER-FREE ENGINE Russian patent published in 2014 - IPC F02B71/04 

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises housing, four pairs of opposed cylinders and two sets of pistons. In compliance with this invention, every piston set is composed of an integral unit with two ends and cylindrical hollow bodies with rack fitted at mid section. Engine housing is composed to form the clearance between it and set of pistons. Piston sets are engaged via timing mechanism equipped with main shaft extending through said housing both ways. Overrunning couplings are arranged outside the housing and engaged with the main shaft. Output shafts of said couplings are engaged with generators. Timing gear is composed of a gear rigidly engaged with said main shaft and racks at piston sets. Engine comprises piston position transducer arranged in every cylinder electrically connected with control unit.

EFFECT: higher efficiency, lower vibration.

2 cl, 5 dwg