Title:
LUBRICANT COMPOSITIONS FOR DIRECT INJECTION ENGINES
Document Type and Number:
Japanese Patent JP2019070167
Kind Code:
A
Abstract:
To provide a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine.SOLUTION: The present invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and a metal overbased detergent. The metal overbased detergent may be selected from sulfonate detergents, phenate detergents, and salicylate detergents, especially sulfonate detergents with a metal ratio of at least 5.SELECTED DRAWING: None
Inventors:
PATRICK E MOSIER
JEFFRY G DIETZ
ALEXANDER SAMMUT
JEFFRY G DIETZ
ALEXANDER SAMMUT
Application Number:
JP2019024309A
Publication Date:
May 09, 2019
Filing Date:
February 14, 2019
Export Citation:
Assignee:
LUBRIZOL CORP
International Classes:
C10M159/20; C10M101/02; C10M133/16; C10M133/56; C10M159/22; C10M159/24; C10M169/04
Attorney, Agent or Firm:
Hidesaku Yamamoto
Natsuki Morishita
Natsuki Morishita