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

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises housing, two pairs of opposed cylinders and two sets of pistons. Every piston set is composed of a single assembly with two ends and cylindrical hollow housing. The latter accommodates pins arranged at its mid part. 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 clutches with output shafts engaged with generators are fitted outside said housing and engaged with overrunning clutch main shaft. Timing gear is composed of a gear rigidly engaged with said main shaft and racks at piston sets. Proposed engine comprises control unit. Pressure gage is fitted in every cylinder electrically connected with control unit.

EFFECT: shaft rpm transducer electrically connected with control unit.

3 cl, 5 dwg