Influence of mico fuels on engine performance, exhaust emissions, and endurance

Technical Report · Sat Dec 01 04:00:00 EST 1979

OSTI ID:6555210

Tataiah, K; Lestz, S J

The influence of Micronized Coal-in-Oil (MICO) fuels on engine performance and exhaust emissions was experimentally studied in a single-cylinder Hatz diesel engine. One of these fuels, which contained 20 wt % coal, was also examined for its effects on engine endurance and wear in a four-cylinder Mercedes diesel engine. The performance and emissions tests were conducted at twelve different steady-state conditions covering the operating speed-load range of the engine. In each test, the exhaust emissions (including particulates, sulfates, and smoke), crankcase blowby, and temperatures were measured, and brake thermal efficiency and air-fuel ratio were calculated. The results obtained with the single-cylinder engine indicate that the coal in MICO fuel hinders the combustion of the diesel component and decreases the overall brake thermal efficiency of the engine. Although the coal reduces the consumption of diesel fuel component, the total energy consumption is higher. The exhaust emissions (unburned hydrocarbons, carbon monoxide, oxides of nitrogen, particulates, smoke, and sulfates) increased with the use of coal in the fuel. MICO fuel which contained 2.8 wt % emulsified water further increased the HC, CO, particulates, and smoke emissions. However, the water reduced NO/sub x/ and had no effect on sulfate emissions.

• Research Organization: Southwest Research Inst., San Antonio, TX (USA). Army Fuels and Lubricants Research Lab.
• DOE Contract Number: AC22-78ET00269
• OSTI ID: 6555210
• Report Number(s): AD-A-090977; AFLRL-125; ON: TI84016849
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
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330800* -- Emission Control-- Alternative Fuels
CARBONACEOUS MATERIALS
COAL
DIESEL ENGINES
DISPERSIONS
EFFICIENCY
ENERGY SOURCES
ENGINES
EXHAUST GASES
FLUIDS
FOSSIL FUELS
FUEL OILS
FUEL SLURRIES
FUEL SUBSTITUTION
FUELS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LIQUID FUELS
MATERIALS
MIXTURES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PERFORMANCE
PETROLEUM PRODUCTS
SLURRIES
SUSPENSIONS
THERMAL EFFICIENCY
WASTES