Title:
CONTROL VALVE USED IN VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND VALVE TIMING CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/152965
Kind Code:
A1
Abstract:
According to the present invention, one control valve (27) comprises: a valve body (13); a sleeve (30) disposed in the valve body (13); and a spool valve (31) provided between the sleeve (30) and the valve body (13) to be slidable in an axial direction. The sleeve valve (31) has: a first spool oil passage (52) that passes through in a radial direction; and a second spool oil passage (54) that is located on an axial side differing from the first spool oil passage (52) side and passes through in a radial direction. The first spool oil passage (52) can communicate with a retard port (34) provided in the valve body (13). In another control valve, the first sleeve oil passage (52) is disposed on an axial side differing from the second spool oil passage (54) side, and can communicate with the retard port.
Inventors:
TAKADA YASUHIDE (JP)
Application Number:
PCT/JP2019/045529
Publication Date:
July 30, 2020
Filing Date:
November 21, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F01L1/356; F16K3/26
Foreign References:
| JP2018112080A | 2018-07-19 | |||
| JP2018091225A | 2018-06-14 | |||
| JP2018115617A | 2018-07-26 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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