Accession Number : AD0772917

Title :   Investigating Heat Transfer Characteristics of Lubricants for Internal-Combustion Engines.

Descriptive Note : Final rept.,

Corporate Author : COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : LePera,Maurice E. ; Oswald,George E.

Report Date : JAN 1974

Pagination or Media Count : 23

Abstract : The heat transfer properties of automotive engine lubricants and basestocks were defined in terms of a calculated 'Figure of Merit' values, determined by utilization of measured Thermal Conductivity, Specific Heat, Density, and Viscosity, revealed that lubricant basestock and the additive constituents have a significant effect on the resultant heat transfer characteristics of the lubricant. Formulated engine lubricants meeting MIL-L-2104C and MIL-L-46152 as well as two ASTM Reference Oils were evaluated. A multiviscosity product, Grade 10W-40, was found to exhibit the lowest heat transfer characteristics of all products examined indicating a need for additional work. (Author)

Descriptors :   *LUBRICATING OILS, *HEAT TRANSFER, INTERNAL COMBUSTION ENGINES

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE