United States or Kenya ? Vote for the TOP Country of the Week !
A small jet is fitted for starting and running without load. The channels cast in the crank chamber, already alluded to in connection with oil-cooling, serve to warm the air before it reaches the carburettor, of which the body is water-jacketed.
He had got three of these new cars, and while Montague sat upon the quarter-deck of the Triton and gazed at the magnificent scenery of the river, he had in his ear the monotonous hum of Devon's voice, discussing annular ball-bearings and water-jacketed cylinders. One of the new cars met them at Devon's private pier, and swept them over the hill to the mansion.
The electric current enters the crucible through two massive electrodes of solid carbon, 70 inches in length and 14 inches in diameter, so mounted that they can be moved either vertically or horizontally by the electrician in charge. These electrodes are water-jacketed to reduce the rate of consumption.
The cylinders were fully water-jacketed, and no special attempt toward securing lightness for air work appears to have been made. The fining down of detail that brought weight to such limits as would fit the engine for work with heavier-than-air craft appears to have waited for the brothers Wright.
A different but equally efficient type of Vee design was the Dorman engine, of which an end elevation is shown; this developed 80 brake horse-power at a speed of 1,300 revolutions per minute, with a cylinder bore of 5 inches; each cylinder was made in cast-iron in one piece with the combustion chamber, the barrel only being water-jacketed.
Special attention was given to the machining of the interiors of the cylinders and the combustion heads, with the result that the exceptionally high compression of 95 lbs. per square inch was obtained, giving a very flexible engine. The cylinder heads were completely water-jacketed, and copper water-jackets were also fitted round the cylinders.
First made semi-cooled the exhaust valve was left air-cooled, and then entirely water-jacketed this engine demonstrated the advantage of full water cooling, for under the latter condition the same power was developed with cylinders a quarter of an inch less in diameter than in the semi-cooled pattern; at the same time the weight was brought down to 4 1/2 lbs. per horsepower.
Word Of The Day