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Title:
CYLINDER LUBRICATING OIL COMPOSITION FOR SCRUBBER-EQUIPPED CROSSHEAD DIESEL ENGINES
Document Type and Number:
WIPO Patent Application WO/2016/080441
Kind Code:
A1
Abstract:
A cylinder lubricating oil composition for scrubber-equipped crosshead diesel engines, the composition comprising a base oil and (A) a metallic detergent, and having a base number of 15 to 125 mgKOH/g and a kinematic viscosity at 100°C of 10 to 30 mm2/s, and satisfying requirement (i) or (ii). (i) Comprises 0.02 to 5.0 mass% of (B) a demulsifier. (ii) Comprises, as the component (A), (A1) a Ca phenate detergent and (A2) a metallic detergent other than the Ca phenate detergent, includes, as a nitrogen content, 0.015 mass% or less of (C-1')a succinimide or a borated derivative thereof, the succinimide having in the molecule at least one alkyl group or alkenyl group, or does not include the same, and has a Ph value represented by formula (1) of 20×10-3 or less. Ph value=CCa×2/(rM×40.08) (1) (In formula (1), CCa is the calcium content (mass%) derived from the (A1) component, and rM is the metal ratio of the (A1) component.)

Inventors:
TAKESHIMA SHIGEKI (JP)
Application Number:
PCT/JP2015/082411
Publication Date:
May 26, 2016
Filing Date:
November 18, 2015
Export Citation:
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Assignee:
JX NIPPON OIL & ENERGY CORP (JP)
International Classes:
C10M171/02; C10M145/24; C10M159/22; C10M163/00; C10M133/16; C10N10/04; C10N20/00; C10N20/02; C10N20/04; C10N30/00; C10N40/25
Foreign References:
JP2011132338A2011-07-07
JP2005002341A2005-01-06
JP2010174092A2010-08-12
JP2009185293A2009-08-20
Other References:
"Influence of Countermeasure Technologies for SOx Regulation on Engine Lubrication", JOURNAL OF THE JAPAN INSTITUTE OF MARINE ENGINEERING, vol. 50, no. 3, 1 May 2015 (2015-05-01), pages 347 - 353
See also references of EP 3222702A4
Attorney, Agent or Firm:
YAMAMOTO, Noriaki et al. (JP)
Yamamoto 典輝 (JP)
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