Coal-Fueled Diesel Engine Progress at GE Transportation Systems

Abstract

A coal-fueled diesel engine holds the promise of a rugged, modular heat engine that uses cheap, abundant fuel. Economic studies have indicated attractive returns at moderate diesel fuel prices. The compositions of coal-water fuels are being expanded to cover the major coal sources. Combustion has been developed at 1000 rpm with mechanical and electronic fuel injection. Dual fuel operation can run the engine over the load range. Erosion of fuel nozzles has been controlled with diamond compacts. Wear of piston rings and cylinder liners can be controlled with tungsten carbide coatings. Emission measurements show higher particulates and SO2 and lower NOx, CO, and HC. Particulate and SO2 control measures are being investigated.

Ultra clean coal production by microwave irradiation pretreatment and sequential leaching with HF followed by HNO3

“…UCC has various potential uses, such as serving as the carbon source for the silicon smelting industry [2]; replacing oil for the production of aromatic chemicals and materials [2]; producing a coal slurry fuel that can be used to replace oil combustion in diesel engines [3][4][5][6][7]; producing activated carbon used in filters for water and air purification; producing carbon fiber that is an extremely strong reinforcement material used in construction [8]; fabricating carbon anodes to replace petroleum coke [2]; and serving as the fuel for advanced power generation technologies, such as direct firing in gas turbines [9].…”

Coal fueled diesel system for stationary power applications-technology development

“…The work at SwRI included examination of two different pump-linenozzle systems with increased clearances (23*24), a unit injector with increased clearance 24, a Cummins Pressure-Time system (25), a unit injector equi ed w i t h a diaphragm to separate diesel fuel and slurry inside the injector (see Figure 2)8' )v and a pump-line nozzle system equipped with a free piston located between the nozzle and the injection ump, and separating from diesel fuel that is circulated through the injection pump(2 I . The initial efforts used the diaphragm system as the pressurization system for the accumulator (27). The basic layout of the GE diaphragm system is shown in Figure 3, and a cross-section of the accumulator nozzle is shown Figure 4.…”