. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Vm. 3. -Kollason gas-engine. ENGINES, GAS AND OIL. 269 center of the cylinder until the piston stops, and then it divides and flows back along thewalls. This portion, which is diluted with the air in the combustion-chamber, is congregatedround the tiring-port, while the richer part of the charge is situated next the piston. The. h k\j. 4.— teas eiij^iiie. weaker part is ignited first, and the velocity of c
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Vm. 3. -Kollason gas-engine. ENGINES, GAS AND OIL. 269 center of the cylinder until the piston stops, and then it divides and flows back along thewalls. This portion, which is diluted with the air in the combustion-chamber, is congregatedround the tiring-port, while the richer part of the charge is situated next the piston. The. h k\j. 4.— teas eiij^iiie. weaker part is ignited first, and the velocity of combustion increases as it approaches thericher part. Prof. A. B. W. Kennedy, of London, made in 1888 a test of this engine undervarying conditions, and his report of its performance is published in Engineering, May 4thand 11th of that year. The results as to its efficiency are summed up as follows, being theaverage of four ex])criments: Percentage of whole heat of combustion turned into work 19*6 Percentage rejected in jacket water 33 Percentage rejected in exhaust 43 • 1 Percentage rejected in blank charge and unaccounted for 4-3 100-0 The mechanical efficiency of the engine on net indicated horse-power during the trialsranged from 86-1 to 90-8; and the consumption of gas per indicated horse-power per hour20-67 ft; to 21-68 ft. The Van Duzen Gas-Engine, made by the VanDuzen Gas and GasolineEngine Co., of Cincinnati,is shown in Fig. 5. Thecylinder and water-jacketand pillow-blocks are allof one
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