Title:
VALVE TIMING ADJUSTMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/135586
Kind Code:
A1
Abstract:
A retarded angle supply oil passage (RRs) connects a hydraulic oil supply source (OS) and a retard chamber (201), via a hydraulic oil control unit (OC). An advanced angle supply oil passage (RAs) connects the hydraulic oil supply source (OS) and an advance chamber (202), via the hydraulic oil control unit (OC). A drain oil passage (RRd) and a drain oil passage (RAd) connect the retard chamber (201) and the advance chamber (202) to an oil discharge section (OD). A recycled oil passage (Rre) connects the drain oil passage (RRd) and the drain oil passage (RAd) to the retarded angle supply oil passage (RRs) and the advanced angle supply oil passage (RAs). A recycle check valve (81) permits the flow of hydraulic oil in the recycled oil passage (Rre) from the drain oil passage side to the retarded angle supply oil passage (RRs) side and the advanced angle supply oil passage (RAs) side only. The recycled oil passage (Rre) is connected to the drain oil passage, inside the hydraulic oil control unit (OC).
Inventors:
MITSUTANI TETSURO (JP)
Application Number:
PCT/JP2018/001405
Publication Date:
July 26, 2018
Filing Date:
January 18, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F01L1/356
Foreign References:
| JP2015145672A | 2015-08-13 | |||
| DE102015208453B3 | 2016-06-30 | |||
| DE102010019004A1 | 2011-11-03 | |||
| DE102010011835A1 | 2011-09-22 | |||
| JP2009209895A | 2009-09-17 | |||
| JP2016130467A | 2016-07-21 | |||
| JP2015105643A | 2015-06-08 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
Download PDF: