MIL-DTL-62177E
DETAIL SPECIFICATION
ENGINE, DIESEL: 12 CYLINDER, 90° V-TYPE, 750HP, AVDS1790-2, AVDS1790-2A, AVDS1790-2C, AVDS1790-2D, AVDS1790-2DR, AVDS1790-2CA AND AVDS1790-2DA
MIL-DTL-62177E - Page 16 of 26
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.
Back to Top
