OPPOSITE INTERNAL COMBUSTION ENGINE AND ITS CRANKSHAFT Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: engine has crankcase 1, cylinders 2 secured in the case, movable bushings 3 provided with bottoms 5 and heads 4 between which pistons 6 is interposed forming working 7 and under-piston 8 chambers of alternative volume, and crankshaft 9. Each piston 6 is rigidly coupled with bottom 5 of bushing 3 of opposite cylinder 2. Bottom 5 are pivotally connected to the crankshaft via connecting rods 10. Bushings 3 can be made of slides for gas distributing provided with collars of inlet 15, blowing 16 and outlet 17 ports located on cylindrical surface of bushings 3. Crankshaft 9 has one middle crankpin made in block with the first end crankpin and journal too. Face surface of the middle crankpin is provided with a face opening which is eccentric to its axis and cylindric projection received in a seat opening of a web. The web is coupled with the middle crankpin through a pin pressed in the face opening of the middle crankpin via through opening of the web. EFFECT: improved design. 8 cl, 4 dwg