Control valve arrangement of automatic transmission

Details Control valve arrangement of automatic transmission Control valve arrangement of automatic transmission

1994-10-04

1996-11-19

Marmor, Charles A.

Machine element or mechanism

Elements

Gear casings

F16H 5702

Patent

active

055751903

ABSTRACT:
A control valve arrangement for use in an automatic transmission has a recess defined by a lower portion of a transmission case. The recess has therein a mounting surface formed with outlet and inlet openings communicating with fluid passages formed in the transmission case. A center valve body is put on the mounting surface and has therein a hydraulic circuit. The center valve body has a first given portion formed with inlet and outlet openings mated with the transmission case outlet and inlet openings when the center valve body is properly put on the mounting surface. A lower valve body is put on a lower surface of the center valve body and has therein another hydraulic circuit. The lower valve body is constructed to have the same width as the center valve body so that the lower valve body has a second given portion located just below the first given portion of the center valve body. An upper valve body is tightly mounted on an upper surface of the center valve body and has therein yet another hydraulic circuit. A first separate plate is interposed between the center and lower valve bodies, and a second separate plate is interposed between the center and upper valve bodies. A bolt passes through the second given portion, the first separate plate, the first given portion, and the second separate plate, and is detachably connected to the mounting surface to tightly mount the valve unit to the mounting surface.

REFERENCES:
patent: 4364285 (1982-12-01), Morisawa et al.
patent: 4449426 (1984-05-01), Younger
patent: 5305663 (1994-04-01), Leonard et al.

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