HYDROMECHANICAL INJECTION ADVANCE COUPLING Russian patent published in 2000 - IPC

FIELD: internal combustion engines; devices for changing angle of fuel injection or timing phases. SUBSTANCE: proposed hydromechanical injection advance coupling has mechanically coupled driving and driven coupling members with splines some of which are non-parallel to coupling axis, single-acting ring hydraulic cylinder and pull-back spring. Intermediate splined member made in form of movable hydraulic cylinder with ring space and fixed ring piston are arranged coaxially between splines of driving and driven coupling members. EFFECT: provision of compact mechanism operating efficiently at low pressures of working medium and capable of transmitting heavy loads. 4 cl, 3 dwg