Title:
VALVE TIMING ADJUSTMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/084764
Kind Code:
A1
Abstract:
An OCV (10) provided in a valve timing adjustment device is equipped with: a center bolt (11) which has a supply port (21) which is connected to an oil supply source, an advanced ignition port (22) which is connected to an advanced ignition oil pressure chamber (61), a delayed ignition port (23) which is connected to a delayed ignition oil pressure chamber (62), and a drain port (24) which is connected to the outside of the OCV (10); and a spool (12) which moves back and forth inside the center bolt (11) in the axial direction thereof, and according to stroke volume, supplies and discharges oil through the supply port (21), the advanced ignition port (22), the delayed ignition port (23) and the drain port (24). When the spool (12) is positioned in the starting position, the supply port (21) is connected to the advanced ignition port (22) and the delayed ignition port (23), and when the spool (12) is positioned in the ending position, the advanced ignition port (22) is connected to the outside of the OCV (10) and the delayed ignition port (23) is connected to the drain port (24).
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Inventors:
MATSUMOTO TAKUHIRO (JP)
Application Number:
PCT/JP2018/039870
Publication Date:
April 30, 2020
Filing Date:
October 26, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F01L1/356
Domestic Patent References:
| WO2000068547A1 | 2000-11-16 | |||
| WO2001066915A2 | 2001-09-13 |
Foreign References:
| JP2013064380A | 2013-04-11 | |||
| JP2002295275A | 2002-10-09 | |||
| US20170226902A1 | 2017-08-10 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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