Diesel engine endurance tests using JP-8 fuel blended with used engine oil. Interim report November 1996--December 1997

Technical Report · Wed Jul 01 04:00:00 EDT 1998

OSTI ID:658712

Frame, E A; Yost, D M; Palacios, C F

Tests were done to examine the feasibility of disposing of used engine oil from military vehicles by blending it with JP-8 engine fuel to be used in diesel vehicles. Two Army diesel engines were evaluated in cyclic endurance dynamometer test procedures using JP-8 fuel blended with 7.5% vol used oil. Results were compared to baseline performance using neat JP-8 fuel. The following major differences were observed when using blended fuel: Significant ashy deposits were found in the pre-combustion chamber of the 4-cycle diesel engine; indications of imminent exhaust valve burning (streaking) were found on the exhaust valves in the 2-cycle diesel engine. For both engines, condition was such that continuous use of 7.5 %vol blend would not be recommended. Considering it would take between 19--68 years for an Army engine to reach the end of endurance test condition, use of blended fuel 1 or 2 times per year is judged acceptable from an endurance standpoint.

• Research Organization: Southwest Research Inst., TARDEC Fuels and Lubricants Research Facility, San Antonio, TX (United States)
• OSTI ID: 658712
• Report Number(s): AD-A--349754/XAB; CNN: Contract DAAK70-92-C-0059
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
FEASIBILITY STUDIES
FUEL SUBSTITUTION
JET ENGINE FUELS
PERFORMANCE
WASTE OILS
WASTE PRODUCT UTILIZATION