Effect of Base Oil on Two-Cycle Engine Oil Performances Nippon Mining Company, Limited * Kyodo Oil Technical Research Center Company, Limited ** Yamaha Motor Company, Limited Japan

Format:

Book

Conference/Event

Author/Creator:

Hosonuma, Kunihiko, author.

Conference Name:

Small Engine Technology Conference & Exposition

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Tokyo, JAPAN Society of Automotive Engineers of Japan 1991

Summary:

Effect of base stock material, especially polybutene, on two-cycle engine oil performance was studied. At first, visible smoke tests were conducted, using test oils of different base stocks. Polybutene showed the best performance among the test oils.Then, piston detergency tests were performed. Test oil of higher molecular weight polybutene showed poorer results. In addition, piston deposits were analyzed and it was found that polybutene molecular weight was increased during the test. Piston detergency was discussed in relation with the increase in viscosity caused by increase in molecular weight.Finally, engine startability tests were carried out. Good correlation with viscosity was found only in test oils of same mineral base stock concentration. The increase in engine start torque was attributed to increase in polybutene viscosity caused by selective evaporation of the lower molecular weight portion

Notes:

Vendor supplied data

Publisher Number:

911275

Access Restriction:

Restricted for use by site license