. Electric railway journal . Crude-Oil Engine—Compressed-Air Storage Bottles generated by the compression of air in the other cylinderor cylinders meanwhile ignites the oil that has been in-jected. Then the starting lever is thrown out of commis-sion; this closes the air valve, and the cams operating thefuel-admission valves come into play simultaneously. Theengine is ready for full load in less than a minute after theinitial movement of the starting: lever. The governor is driven directly from the main shaft andis so graduated that less than y2 cu. in. of fuel oil is in-jected on any working
. Electric railway journal . Crude-Oil Engine—Compressed-Air Storage Bottles generated by the compression of air in the other cylinderor cylinders meanwhile ignites the oil that has been in-jected. Then the starting lever is thrown out of commis-sion; this closes the air valve, and the cams operating thefuel-admission valves come into play simultaneously. Theengine is ready for full load in less than a minute after theinitial movement of the starting: lever. The governor is driven directly from the main shaft andis so graduated that less than y2 cu. in. of fuel oil is in-jected on any working stroke when full load is on and lessamounts are used to suit momentary load conditions. Thefuel injection pump is of the two-stage type. The speedcan be controlled closely. A regards maintenance, a two-cylinder 300-hp engine. Crude-Oil Engine—Showing Cylinder was run continuously for one month and then run for asecond month with a shut-down from Saturday midnightuntil Sunday midnight each week to determine whether theeconomy of the engine or its ability to start quickly wouldbe affected if the parts were allowed to cool off and con-tract. No effect was noticed in these particulars and noadjustments were required other than those which any ordi-nary operator could effect. The piston, cylinder and valvemechanism were in as good a condition as at the beginningand there was no perceptible wear on any of the bearingsurfaces, and no repairs were required. During June of this year C. E. Sargent, consulting en-gineer, Chicago, made a series of tests of a two-cylinderAtlas engine directly connected to a 175-kw generator. Theengine cylinders were 20-in. diameter by 30-in. stroke andthe speed of the unit was 175 The compressed airfor the injection and starting was furnished by a three-stage compresor, driven
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