Title:
【発明の名称】液圧制御装置
Document Type and Number:
Japanese Patent JP2876336
Kind Code:
B2
Abstract:
A hydraulic pressure control system has a hydraulic pressure control valve (4,4 min ,4 sec ) which includes a spool (22,102) slidably received in a housing (21,101) for axial sliding movement between a rear position in which it permits the communication between an output port (29,115) and a release port (30,113) and a front position in which it permits the communication between the input port (28,114) and an output port (29,115). The hydraulic pressure control system also has a reaction chamber (32,119) connected to the output port (29,115) for providing a hydraulic pressure for biasing the spool (22,102) rearwardly, and an input pressure working chamber (34,35;118) for providing a hydraulic pressure for biasing the spool (22,102) forwardly, a differential pressure regulating valve (45,106,130) is interposed between the output port (29,115) and the reaction chamber (32,119) and adapted to be opened in response to the hydraulic pressure from the output port (29,115) becoming higher than the hydraulic pressure in the reaction chamber (32,119) by a predetermined value or more. At an initial stage of the beginning of application of the hydraulic pressure to the input pressure working chamber (34,35;118), the application of the hydraulic pressure to the reaction chamber (32,119) is cut off, so that the output hydraulic pressure from the output port (29,115) can be suddenly increased with the spool (22,102) kept located in the front position to provide a smooth initial operation of the hydraulically operated device (BLF,BFR,BLR,BRR) connected to the output port (29,115).
Inventors:
MATSUDA SHOHEI
TAJIMA KAZUTOSHI
FURUYA KOICHI
NAEI MASAAKI
SUZUKI JIRO
KOJIMA TAKESHI
TAJIMA KAZUTOSHI
FURUYA KOICHI
NAEI MASAAKI
SUZUKI JIRO
KOJIMA TAKESHI
Application Number:
JP14072690A
Publication Date:
March 31, 1999
Filing Date:
May 30, 1990
Export Citation:
Assignee:
HONDA GIKEN KOGYO KK
International Classes:
B60T8/34; B60T8/40; B60T8/42; B60T8/48; B60T8/94; B60T13/18; F16D48/02; F16D48/04; (IPC1-7): B60T8/40
Domestic Patent References:
| JP5284369A | ||||
| JP62116346A | ||||
| JP62258844A | ||||
| JP6483444A | ||||
| JP6368450A | ||||
| JP6325168A | ||||
| JP508970A |
Attorney, Agent or Firm:
Ken Ochiai (1 person outside)