Title:
LUBRICATION STRUCTURE AND LUBRICATION METHOD FOR UPPER PIN IN PISTON CRANK MECHANISM OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/037935
Kind Code:
A1
Abstract:
This lubrication mechanism is applied to a double link type piston crank mechanism having an upper link (3), a lower link (6), and a control link (7). Lubricating oil is supplied through an oil supply hole (19) to an oil reservoir (21) formed by a plate-shaped member (22) between a pair of pin bosses for an upper pin. The lubricating oil inside the oil reservoir (21) is supplied to the upper pin (4) by reciprocating rotary motion of an upper link-side pin boss section (25) provided with an oil groove (29) on an end surface.
Inventors:
WATANABE DAISUKE (JP)
NAKAJIMA SHIGERU (JP)
WAKI KAZUTO (JP)
KOBAYASHI YOSHIHIRO (JP)
NAKAJIMA SHIGERU (JP)
WAKI KAZUTO (JP)
KOBAYASHI YOSHIHIRO (JP)
Application Number:
PCT/JP2015/075169
Publication Date:
March 09, 2017
Filing Date:
September 04, 2015
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02B75/32
Domestic Patent References:
| WO2011007622A1 | 2011-01-20 |
Foreign References:
| JP2012026384A | 2012-02-09 | |||
| JP2010203270A | 2010-09-16 | |||
| JP2010185328A | 2010-08-26 | |||
| JP2009281242A | 2009-12-03 | |||
| JP2008208783A | 2008-09-11 | |||
| JP2002364393A | 2002-12-18 |
Other References:
See also references of EP 3346107A4
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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