Progress on the investigation of coal-water slurry fuel combustion in a medium-speed diesel engine; Combustion studies. Part 5
- General Electric Transportation Systems, Erie, PA (United States)
This paper reports that in the GE 7FDL single-cylinder research diesel engine, coal-water slurry (CWS) fuel combustion optimization studies were conducted using electronically controlled CWS and pilot accumulator injectors. The most important performance parameters of peak firing pressure, combustion efficiency (coal burnout) and specific fuel consumption were evaluated in relationship to CWS and pilot injection timing, CWS injector hole size, shape, and number, CWS fuel injection spray angles and injection pressure. Heat release diagrams, as well as exhaust samples (gaseous and particulate), were analyzed for each case. Interesting effects of fuel spray impingement and CWS fuel Delayed Ignition were observed. With the engine operating at 2.0 MPa IMEP and 1050 rpm, it was able to obtain over 99.5 percent combustion efficiency while holding the cylinder firing pressure below 17 MPa and thermal efficiency equivalent to diesel fuel operation.
- OSTI ID:
- 7124647
- Journal Information:
- Journal of Engineering for Gas Turbines and Power; (United States), Vol. 114:3; ISSN 0742-4795
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
01 COAL, LIGNITE, AND PEAT
COAL
SPRAYS
DIESEL ENGINES
FUEL INJECTION SYSTEMS
THERMAL EFFICIENCY
DIESEL FUELS
COMBUSTION
DESIGN
FUEL SLURRIES
CHEMICAL COMPOSITION
OPTIMIZATION
PARAMETRIC ANALYSIS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DISPERSIONS
DISTILLATES
EFFICIENCY
ENERGY SOURCES
ENGINES
FOSSIL FUELS
FUEL SYSTEMS
FUELS
GAS OILS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LIQUID FUELS
MATERIALS
MIXTURES
OXIDATION
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
330102* - Internal Combustion Engines- Diesel
330603 - Vehicle Design Factors- Engine System
025000 - Petroleum- Combustion
014000 - Coal
Lignite
& Peat- Combustion