Fuel and lubricant compatibility studies for army high-output two-cycle diesel engines. Interim report Sep 72-Sep 75

Technical Report · Wed Sep 01 04:00:00 EDT 1976

OSTI ID:7224918

Lestz, S J; Bowen, T C; LePera, M E

A high-output Army two-cycle diesel engine was subjected to proving-ground related laboratory-dynamometer endurance test cycles using four different qualified MIL-L-2104C SAE grade 30 lubricants. Three diesel fuels differing mainly in sulfur level and end point temperature were an important part of the test matrix. Two lubricants (low- and mid-ash level) produced acceptable performance and a third (of high-ash level) was considered borderline acceptable--all during operation with reference No. 2 diesel fuel (0.42% wt sulfur). A fourth oil (low-ash level) was judged to be incompatible due to its proneness to severe piston and liner scuffing. The engine was judged incompatible with a high sulfur/high end-point (1.2%S/396 C (744 F) EP) fuel intended to meet MIL-F-16884F (Marine Diesel Fuel) using two different MIL-L-2104C lubricants. This engine was also judged to be incompatible with a special blend to NATO F-54 diesel fuel (0.64% sulfur) during operation with the same two lubricants. Incompatibility using fuel sulfur levels greater than 0.50% was based on the occurrence of catastrophic piston/ring/exhaust valve failure and relatively high deposit and wear levels.

• Research Organization: Southwest Research Inst., San Antonio, TX (USA). Army Fuels and Lubricants Research Lab.
• OSTI ID: 7224918
• Report Number(s): AD-A031885; AFLRL-80
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330800* -- Emission Control-- Alternative Fuels
DIESEL ENGINES
DIESEL FUELS
DYNAMOMETERS
ELEMENTS
ENGINES
INTERNAL COMBUSTION ENGINES
LUBRICANTS
LUBRICATING OILS
MEASURING INSTRUMENTS
NONMETALS
PERFORMANCE TESTING
PETROLEUM PRODUCTS
SULFUR
TESTING
WEAR