Patent ID: 6510822
Filing Date: 2003-01-28
Classification: F02B,F02D,Y10T

Abstract:
A crankshaft for a reciprocating internal combustion engine, comprising a crankpin (11) and an eccentric sleeve (10) which is rotatably mounted on the crankpin by means of its cylindrical inner surface, with the sleeve having at least one locking recess (8) which a plurality of hydraulically actuable locking elements can engage in order to cancel the rotatability of the sleeve about the crankpin, with the locking elements being arranged on the crankshaft such that the locking elements are preloaded mechanically into a position of rest, and with the locking elements being movable out of the position of rest when a hydraulic pressure is applied by a control means comprising hydraulic feed lines (2, 4, 5, 15) contained within the crankshaft, and with the crankshaft further comprising at least one emerging fluid feed passage (3,12) leading to the outer surface of the crankpin (11), and wherein the sleeve (10) is shaped in such a way on its inner surface that feeding in a fluid via the emerging fluid feed passage (3,12) produces a torque about the crankpin at the sleeve.