Title:
複リンク式ピストン-クランク機構を備えた内燃機関のクランクシャフト及び内燃機関の複リンク式ピストン-クランク機構
Document Type and Number:
Japanese Patent JP5252083
Kind Code:
B2
Abstract:
In a crankshaft of an internal combustion engine wherein a crankthrow is shortened by the use of a multi-link mechanism, a stress concentration caused by a torsional torque in the vicinity of a pin-side opening (21) of an oil passage (20), which is open at the outer peripheral surface of a crankpin, is alleviated. The crankthrow from the axis of a main journal (2) to the axis of the crankpin (3) is set shorter than one-half of a piston stroke. The oil passage (20) is formed to supply lubricating oil to a bearing portion of the crankpin (3). The pin-side opening (21) of the oil passage (20), which is open at the outer peripheral surface of the crankpin (3), is formed in ranges other than angular ranges of 0°, 90°, 180°, and 270° with respect to a reference line (X1) extending from the axis of the main journal (2) toward the axis of the crankpin (3) in a decentering direction (X) of the crankpin.
Inventors:
Takashi Tanabe
Makoto Kobayashi
Takeshi Arinaga
Kenji Ushijima
Makoto Kobayashi
Takeshi Arinaga
Kenji Ushijima
Application Number:
JP2011522759A
Publication Date:
July 31, 2013
Filing Date:
June 01, 2010
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F01M1/06; F02B75/04; F02B75/32; F16C3/04; F16C3/14; F16C7/00
Domestic Patent References:
| JP2008064056A | 2008-03-21 | |||
| JP2006132456A | 2006-05-25 | |||
| JP2004518068A | 2004-06-17 | |||
| JPH1130223A | 1999-02-02 | |||
| JP2008064056A | 2008-03-21 | |||
| JP2006132456A | 2006-05-25 | |||
| JP2004518068A | 2004-06-17 | |||
| JPH1130223A | 1999-02-02 |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tsuyoshi Hashimoto
Tomioka Kiyoshi
Tsuyoshi Hashimoto