ICE WITH OPPOSED CYLINDERS Russian patent published in 2015 - IPC F02B75/24 F02B75/32 F02F3/00 

FIELD: engines and pumps.

SUBSTANCE: claimed engine comprises the body unit (1) with at least one pair of opposed sleeves (2, 3) to house the solid piston with two piston heads (4, 5). Piston rod composed of separate props (6, 7) is arranged between piston heads (4, 5). Engine comprises also the pair of con rods with their piston pins (11, 12) and two parallel crankshafts (15, 16) times by gears (19, 20). Crosswise size L_cw of the piston rod lengthwise chamber is configured subject to crosswise size of the crankshaft elbow L_e, radius R_p of the piston head, the piston rod linear prop half-width L_h.w. and depth T_h.d. in compliance with mathematical expression $$Le<Lcw<2\left(\sqrt{R_p^2-d_{h.w.}^2}-T_{h.d.}\right).$$

EFFECT: improved weight and overall dimensions, higher engine stiffness.

2 cl, 9 dwg, 1 tbl