MIL-DTL-62177E AVDS-1790-2 Engine Series Specification Download
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MIL-DTL-62177E 16 c. Electrical loading: 1. Bare engine (see 6.5). A bare engine shall have a 300 ampere (A) direct current (dc) generator installed with an applicable voltage regulator. The generator shall operate at 100 ± 10 A throughout the test. 2. Basic engine (see 6.5). A basic engine, with the applicable voltage regulator, shall have its generator (alternator) operated at 200 ± 10 A throughout the test. d. After the break-in and before initiation of the test, the engine shall be borescope inspected and the condition of the cylinders recorded. e. The engine shall operate on its designed oil system, not on a test cell system. At specified idle periods, engine lubricating oil level shall be checked with engine dipstick and oil shall be added to reach full mark on dipstick. Quantity of oil added shall be recorded. At the end of every 5th test cycle, brake specific oil consumption (BSOC) shall be calculated based on total oil used and average horsepower hours. Oil consumption shall not exceed 0.0075 pound per brakehorsepower-hour (lb/bhp-hr), (0.0034 kg/bhp-hr). 4.6.4.1.1.1 Engine endurance test results. The following engine parameters shall be observed/measured based on engine endurance testing and monitored at the end of watch 10 minute or longer period of the 20-hour cycle, and just prior to each stopping of the engine (emergency stops excluded) except as noted: a. Engine speed, rpm. b. Engine load, torque, lb- ft. c. Intake manifold pressure, in. of Hg. d. Lubricating oil pressure, (main oil gallery), psi. e. Crankcase pressure, in. of water. f. Lubricating oil temperature, °F (sump). g. Blow-by, ft 3 /min. h. Fuel flow, lb per hour. i. Fuel pressure after secondary fuel filter, psi. j. Fuel temperature at secondary fuel filter, °F. k. Air temperature at air cleaner inlet, °F. l. Test cell ambient air temperature, °F. m. Specific oil consumption, lb per gross hp-hour, at end of every 5th test cycle (see table VII). n. Generator/Alternator, volts and amperes. In addition to the above, the following shall also be monitored: o. Barometric pressure of test cell-once each 4-hour period. p. Exhaust smoke density-once each 50-hour period, ±5 hours. q. Lubricating oil quantity (quarts) added at idle periods 17, 46, 72, and 90.