Pressure regulating arrangement with a damping device for a control pressure of an automatic change-speed transmission

A pressure-regulating arrangement for regulating a control pressure of a shifting arrangement of an automatic change-speed transmission connected behind a driving engine in a direction of force transmission which is utilized for initiation of downshifting operations, comprising:

• control slide valve means for said control pressure for adjusting a predetermined, substantially constant pressure value determined by control spring means during idling and low partial load operations of the driving engine;
• adjusting sleeve means operatively connected with a control member of said driving engine for output control of said engine;
• a pressure member, said control slide valve means being actuatable in response to an increase of said control pressure by said pressure member from said adjusting sleeve means by resilient means when said control member is moved beyond a predetermined position corresponding to a low partial load in a direction toward a full load position;
• hydraulic damping means for delaying response of said control slide valve means with respect to said adjusting sleeve means, including two damping members of piston-cylinder-type construction which are movable relative to one another and enclose therebetween a damping chamber means containing a hydraulic damping medium, one of said damping members being rigidly supportable against a housing means and the other damping member which is movable relative to said housing means being actuatable by said pressure member and thereby displacing damping medium out of said damping chamber means against action of at least one throttle means;
• wherein said damping means is arranged at an end face of said control slide valve means facing said pressure member and said damping member movable relative to said housing means being immovably connected with said pressure member, and said damping chamber means being operatively connected by relief valve means with a space that is at least under atmospheric pressure.