(57) The invention solves the problem of continuous current changing the compression ratio
within a wide range with simultaneous changing the engine capacity.
The essence of the invention consists in that the crank mechanism comprises an eccentric
sleeve (4) being an intermediate element between the connecting-rod journal (5) of
the crankshaft (6) and the big end of the connecting-rod (2). The axis of the internal
hole of the sleeve (4) is moved in relation to the axis of the external cylindrical
surface of the sleeve (4) by the eccentric size (e) bigger from zero and smaller or
equal to 30% of the crankthrow (R) of the crankshaft. The eccentric sleeve (4) is
connected with a driving gear ensuring the angular velocity (ωm) of the sleeve (4)
in relation to the connecting-rod journal (5) of the crankshaft (6) within the range
of ± 1/2ω up to ±ω, where (m) is the angular velocity of the crankshaft (6).
The crank mechanism is provided also with a control mechanism (10) of the angular
position of the sleeve (4) by a definite angle (a o) in relation to the crankthrow
(R) of the crankshaft (6), determined at such a position of the crankthrow (R) in
which the piston (1) is most distant from the crankshaft.
|
|
