Title:
LUBRICATING OIL COMPOSITION FOR TWO-WHEELED MOTOR VEHICLES
Document Type and Number:
WIPO Patent Application WO/2024/090358
Kind Code:
A1
Abstract:
The present invention provides a lubricating oil composition for two-wheeled motor vehicles, the lubricating oil composition containing a base oil (A), a calcium-based detergent (B), zinc dialkyldithiophosphate (C) and an alkali metal borate salt (D), wherein: the calcium-based detergent (B) contains calcium phenate (B1); and, based on the total amount of the lubricating oil composition, the content of calcium atoms derived from the calcium phenate (B1) is 800 ppm by mass or more, the content of phosphorus atoms derived from the zinc dialkyldithiophosphate (C) is less than 750 ppm by mass, and the content of boron atoms derived from the alkali metal borate salt (D) is 180 ppm by mass or more. This lubricating oil composition for two-wheeled motor vehicles is capable of achieving excellent cleanliness at high temperatures and excellent wear resistance in internal combustion engines, while enabling the achievement of a high friction coefficient in a wet clutch even in cases where the content of phosphorus atoms derived from zinc dithiophosphate is reduced.
Inventors:
HARAYAMA TAKATO (JP)
ISHIKAWA MOTOHARU (JP)
ISHIKAWA MOTOHARU (JP)
Application Number:
PCT/JP2023/038082
Publication Date:
May 02, 2024
Filing Date:
October 20, 2023
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M141/12; C10M125/26; C10M129/10; C10M133/16; C10M133/56; C10M135/10; C10M137/10; C10M139/00; C10M159/22; C10M159/24; C10N10/04; C10N30/04; C10N30/06; C10N40/25
Foreign References:
| JP2003165991A | 2003-06-10 | |||
| JP2008106255A | 2008-05-08 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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