Title:
OIL CONTROL RING
Document Type and Number:
WIPO Patent Application WO/2022/209621
Kind Code:
A1
Abstract:
This oil control ring comprises: an oil ring in which a pair of land sections disposed along the sliding direction are coupled by a web section; and a coil expander that forces the oil ring radially toward the outer periphery. In the web section of the oil ring, a plurality of window apertures are formed. In a cross-section along the axial direction of the window-aperture maximum opening along the axis of the oil ring, the width H1 of the oil ring along the sliding direction and the length L1 of a non-window-aperture section excluding the window apertures at the combustion chamber side of the web-section outer peripheral surface satisfy the relation 0.15 > L1 / H1 ≥ 0.
Inventors:
HIKONE AKIRA (JP)
OGURO TAKASHI (JP)
AYUZAWA NORIAKI (JP)
YAMAOKA TOSHIHIRO (JP)
UMEDA NAOKI (JP)
OGURO TAKASHI (JP)
AYUZAWA NORIAKI (JP)
YAMAOKA TOSHIHIRO (JP)
UMEDA NAOKI (JP)
Application Number:
PCT/JP2022/009918
Publication Date:
October 06, 2022
Filing Date:
March 08, 2022
Export Citation:
Assignee:
TPR CO LTD (JP)
International Classes:
F02F5/00; F16J9/06; F16J9/20
Foreign References:
| JP2008291991A | 2008-12-04 | |||
| JP2015197121A | 2015-11-09 | |||
| JP5773500B2 | 2015-09-02 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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