Title:
HYDRAULIC CONTROL DEVICE OF AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2016156399
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce noise which is generated by a check valve when an engine is restored from an idling stop state, and a hydraulic pump is operated.SOLUTION: When an engine is restored from an idling stop state, a hydraulic pump P is operated by a restart of the engine E, and line pressure is boosted, a valve body 61 of a check valve 36 which is valve-closed is abruptly valve-opened while withstanding the hydraulic pressure of accumulators 37, 38, and there arises a risk that noise is generated by an impact of the valve-opening. However, since a sleeve 52 of a selector valve 33B is supported to a valve body 51 via a pair of O-rings 53, 54 which surround two positions separating from each other in an axial line direction, and one end of a sleeve 60 of a check valve 30 is fit into a recess 52a which is formed at the sleeve 52 of the selector valve 33B, even if the valve body 61 collides with a bottom of the recess 52a at the valve-opening of the check valve 36, an impact of the collision is alleviated by the pair of O-rings 53, 54, the impact is not directly transmitted to the valve body 51, and thus, noise is reduced.SELECTED DRAWING: Figure 3
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Inventors:
KOBAYASHI SHOGO
MUKAI TOMOAKI
YOSHIDA SHUNSUKE
MUKAI TOMOAKI
YOSHIDA SHUNSUKE
Application Number:
JP2015032920A
Publication Date:
September 01, 2016
Filing Date:
February 23, 2015
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
F16H61/00; F16H63/48; F16H63/50
Domestic Patent References:
| JP2003247656A | 2003-09-05 | |||
| JP2005226802A | 2005-08-25 | |||
| JP2010043652A | 2010-02-25 | |||
| JP2014122664A | 2014-07-03 |
Attorney, Agent or Firm:
Ken Ochiai
Kazuaki Niki
Nude Shima Shinji
Kazuaki Niki
Nude Shima Shinji