Investigation of diesel engine fuel injector response to coal slurry fuels. Final report

Technical Report · Tue Nov 01 04:00:00 EST 1983

OSTI ID:5962317

Phatak, R

This report describes the research evaluation of various fuel injection systems and equipment operating with coal slurry fuels for use in open chamber direct injection medium-speed diesel engines. Research centered on the pumpability aspect of coal slurry fuels and the compatibility of coal slurry fuels with commercially available fuel injection systems. Initial testing documented many problems in close-clearance areas from scoring, heat, and the lack of lubrication. These experiments indicated that fuel injection equipment designed for the high pressure solid injection of diesel fuel is not suitable to handle coal slurry fuels. An air-assisted coal slurry injector system was then designed and tested using both aspirator and non-aspirator concepts. Most of the earlier problems were eliminated or reduced and the system life was greatly extended, which indicates that it has the potential desired. However, much further research will be required before the air-assisted injector can be adapted to coal slurry burning engines - changes in either injector design and/or combustion chamber design. An air-assisted injector should be built and tested on a specific engine. Further, a suitable system will be required to supply and meter coal slurry fuel under low pressure operation. 2 references, 35 figures, 5 tables.

• Research Organization: Southwest Research Inst., San Antonio, TX (USA)
• DOE Contract Number: AC19-82BC10730
• OSTI ID: 5962317
• Report Number(s): DOE/BC/10730-11; ON: DE85008660
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
33 ADVANCED PROPULSION SYSTEMS
330800* -- Emission Control-- Alternative Fuels
COMPARATIVE EVALUATIONS
COMPATIBILITY
DESIGN
DIAGRAMS
DIESEL ENGINES
DISPERSIONS
ENGINES
FUEL INJECTION SYSTEMS
FUEL SLURRIES
FUEL SUBSTITUTION
FUEL SYSTEMS
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MIXTURES
PUMPING
RHEOLOGY
SLURRIES
SUSPENSIONS