Title:
VALVE TIMING ADJUSTMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/135577
Kind Code:
A1
Abstract:
A spool (50) is provided in an internal space (400) of a sleeve (40) so as to be reciprocably movable in the axial direction and has: a spool cylinder (51); a spool lid (52) that blocks an end section on a driven shaft (3) side of the spool cylinder (51); a pressure accumulation space (500) formed on the inside of the spool cylinder (51); a supply oil passage (54) formed so as to connect the pressure accumulation space (500) and a supply port (43); a control oil passage (55) formed so as to be capable of connecting the pressure accumulation space (500) and a first control port (44); and a control oil passage (56) formed so as to be capable of connecting the pressure accumulation space (500) and a second control port (45). A variable-capacity space (401) being a space having variable capacity is formed between the spool lid (52) and a sleeve floor section (412). The sleeve (40) has a breathing hole (402) that connects the variable-capacity space (401) and the atmosphere, outside the internal space (400).
Inventors:
MITSUTANI TETSURO (JP)
Application Number:
PCT/JP2018/001373
Publication Date:
July 26, 2018
Filing Date:
January 18, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F01L1/356
Domestic Patent References:
| WO2016163119A1 | 2016-10-13 |
Foreign References:
| US20160024978A1 | 2016-01-28 | |||
| JP2015045242A | 2015-03-12 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
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