Improvements in and relating to distributor valves

摘要

1,028,837. Engine distributing valves. SOC. D'APPLICATIONS DES MACHINES MOTRICHES. June 19, 1964 [June 20, 1963], No. 25577/64. Heading Fl M. A distributer valve comprises a body having an internal chamber of flat shape, the dimensions of the slide valve corresponding to the dimensions of the chamber, the chamber and the sliding valve member being respectively symmetrical in relation to a plane perpendicular to the direction of movement of the slide valve when the slide valve is in the neutral position, the port face of the distribution chamber having a median orifice B two first orifices U 1 U 2 on both sides of the median orifice and two second orifices P 1 P 2 on both sides of the first orifices, the slide valve having on a first face in contact with the port face of the distribution chamber three first chambers 11, 12, 13 of flat shape closing respectively the median orifice and the two first mentioned orifices in the neutral position of the slide valve, the slide valve comprising three cylindrical chambers opening on a second face opposite the first face each cylindrical chamber having a piston 4, 5, 6 adapted to bear on the face of the chamber opposite the port face of the distribution chamber by an annular surface and thus determining a second chamber, each piston determining in the corresponding cylindrical chamber a third chamber, a spring 10 in each of the third chambers being disposed so as to press the piston on to the face of the chamber opposite the port face of the distribution chamber, each piston comprising a rod lodged and guided in a bore communicating with the corresponding one of the first chambers, each of the pistons and the piston rods having internal conduits to place the corresponding second chamber into communication with the corresponding one of the first chambers and the slide valve having conduits to put each third chamber in communication with the corresponding first chamber.