Title:
ENGINE OIL FOR DIESEL ENGINE PROVIDED WITH EXHAUST GAS RECYCLING DEVICE
Document Type and Number:
Japanese Patent JP2933115
Kind Code:
B2
Abstract:
PURPOSE: To obtain an engine oil which prevents the abrasion of the components of the combustion chamber of a diesel engine and the wear on the sliding surface inside the engine even when the engine oil is contaminated with sulfuric acid and soot formed in the combustion chamber.
CONSTITUTION: The engine oil is prepared by mixing a lube base oil (mineral or synthetic oil) with 5.8-8.3wt.% calcium alkylsalicylate having a total basic number(TBN) of 165mgKOH/g and a calcium content of 6.0wt.% as a cleaning agent, 0.09-0.13wt.% (in terms of zinc atom) primary alkyl zinc dithiophosphate as an antioxidant/wear inhibitor and 0.02-0.04wt.% (in terms of molybdenum atom) oil-soluble oxymolybdenum dialkyldithiophosphate as a friction modifier/ wear inhibitor.
Inventors:
KIKUCHI MINORU
AKAGAWA HISASHI
AKAGAWA HISASHI
Application Number:
JP264294A
Publication Date:
August 09, 1999
Filing Date:
January 14, 1994
Export Citation:
Assignee:
NITSUSAN DEIIZERU KOGYO KK
International Classes:
F02F1/12; C10M163/00; C10N10/04; C10N10/12; C10N30/04; C10N30/06; C10N30/08; C10N30/10; C10N40/25; F02B3/06; (IPC1-7): C10M163/00; F02F1/12
Attorney, Agent or Firm:
Furuya Fumio (1 person outside)
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