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Title:
LUBRICATING OIL COMPOSITION FOR INTERNAL-COMBUSTION ENGINE, AND METHOD FOR REDUCING FRICTION IN GASOLINE ENGINE
Document Type and Number:
WIPO Patent Application WO/2016/152540
Kind Code:
A1
Abstract:
Provided is a lubricating oil composition for an internal-combustion engine, whereby adequate friction-reducing effects can be demonstrated from a region of low temperatures assumed to occur during engine starting to a region of actual-use temperatures of 80°C or above. A lubricating oil composition for an internal-combustion engine, including a lubricating-oil base oil and a surfactant having alkylene oxide constituent units and an HLB value of 7 to less than 15.

Inventors:
NAKAYA, Ikuko (24-4, Anesakikaigan Ichihara-sh, Chiba 07, 〒2990107, JP)
TAKASHIMA, Yoriyuki (1280, Kamiizumi Sodegaura-sh, Chiba 93, 〒2990293, JP)
Application Number:
JP2016/057465
Publication Date:
September 29, 2016
Filing Date:
March 09, 2016
Export Citation:
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Assignee:
IDEMITSU KOSAN CO.,LTD. (1-1 Marunouchi 3-chome, Chiyoda-ku Tokyo, 21, 〒1008321, JP)
International Classes:
C10M169/04; C10M101/02; C10M107/02; C10M133/04; C10M139/00; C10M145/14; C10N20/00; C10N20/02; C10N20/04; C10N30/06; C10N40/25
Foreign References:
JP2010209182A2010-09-24
JP2013194097A2013-09-30
JP2004353456A2004-12-16
JP2001139978A2001-05-22
JP2014227424A2014-12-08
JP2002294270A2002-10-09
JP2008056876A2008-03-13
JP5807833B12015-11-10
JP2005146010A2005-06-09
Other References:
See also references of EP 3275979A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (OHTANI PATENT OFFICE, Toranomon ES Bldg. 7F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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