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 5 of 26
MIL-DTL-62177E
5
3.3
Operating requirements.
Each engine shall provide the following functional,
operational, and performance capabilities.
3.3.1
Break-in.
The engine shall receive a break-in period that meets the
time/speed/torque schedule specified in 4.6.2.1.12.
3.3.2
Performance.
The engine performance requirements shall be met under the
following conditions:
a.
Fuel.
Diesel fuel conforming to A-A-52557, grade DF-2 shall be used.
b.
Lubricating oil.
Unless otherwise specified herein, lubricating oil conforming to
the seasonal requirements of MIL-PRF-2104 or MIL-L-21260 (-10 to 115 degrees
Fahrenheit (
°
F)
[
(23 to 46 degrees Celsius (
°
C)
]
and MIL-L-46167 (-65 to 0
°
F)
(-54 to -18
°
C) shall be used.
c.
Rated operating conditions.
The engine performance requirements specified in
3.3.3 through 3.3.14.1 shall be met after correction of measured parameters to the
following:
1.
Dry air barometric pressure:
29.92 inches (in.) mercury (Hg),
(101.3 kilopascal (kPa)) Hg.
2.
Fuel temperature at the secondary fuel filter: 60
°
F (16
°
C).
3.
Turbocharger inlet air temperature:
60
°
F.
3.3.3
Leakage.
The engine shall not leak fluid more than the degree defined as “droplet”
(see 4.5.2 and 6.4).
3.3.4
Governor.
The engine governor shall limit the engine speed as follows,
(see 4.6.2.1.1):
a.
Auxiliary drive operation
1750 to 1800 revolutions per minute
(For AVDS1790-2DR engine only)
(rpm).
b.
Idle
700 to 750 rpm.
c.
Speed (no load)
2600 to 2660 rpm.
d.
Speed (full load)
2400 to 2450 rpm.
The engine speed shall stabilize within 30 seconds after the full power setting is reached.
3.3.5
Gross corrected brake horsepower (GCBHP).
The engine shall develop not less
than 735 nor more than 780 GCBHP at 2400 to 2450 rpm at the full power setting
(see 4.6.2.1.2).
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