Title:
LUBRICATING OIL COMPOSITION, DIESEL ENGINE WITH MOUNTED SUPERCHARGER, AND USE METHOD FOR LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2021/187370
Kind Code:
A1
Abstract:
Provided is a lubricating oil composition comprising a base oil (A), succinimide (B) which has not been modified with boron, succinimide (C) modified with boron, a metallic detergent (D), and an antioxidant (E), wherein the ratio of the content of boron atoms derived from ingredient (C) to the content of nitrogen atoms derived from ingredients (B) and (C), B/N, is 0.30 or less by mass, the lubricating oil composition satisfying the following requirement (I) and/or requirement (II). Requirement (I): Ingredient (D) includes a metallic detergent (D1) having a base value less than 100 mgKOH/g. Requirement (II): Ingredient (E) includes an amine-based antioxidant (E1), the content of ingredient (E1) being 1.00 mass% or less.
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Inventors:
YOMOGITA AKINORI (JP)
Application Number:
PCT/JP2021/010097
Publication Date:
September 23, 2021
Filing Date:
March 12, 2021
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M161/00; C10M129/10; C10M133/12; C10M133/16; C10M133/56; C10M139/00; C10M143/00; F02B39/14; C10N20/00; C10N20/02; C10N20/04; C10N30/04; C10N40/25
Domestic Patent References:
| WO2008120599A1 | 2008-10-09 | |||
| WO2008117776A1 | 2008-10-02 |
Foreign References:
| JP2010100707A | 2010-05-06 | |||
| JP2009102486A | 2009-05-14 | |||
| JP2008144018A | 2008-06-26 | |||
| JP2006176672A | 2006-07-06 | |||
| JP2003041283A | 2003-02-13 | |||
| JP2019178296A | 2019-10-17 |
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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