TM-9-2815-220-24
AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TM-9-2815-220-24 - Page 267 of 1563
TM 9-2815-220-24
ENGINE OPERATING PARAMETERS
0040 00
ENGINE OPERATING PARAMETERS
WP 0040
00-1
Blow-by Pressure
.
With engine under full throttle and full load, blow-by should not exceed
18 cubic feet per minute (cfm) with new cylinders and 21 cfm with used cylinders.
Exhaust Gas Temperature.
Exhaust gas temperatures, measured at individual cylinder ports,
should not exceed 1250
°
F (677 C
°
).
Temperature variation between cylinders should not exceed
150 °F (66 C
°
) under full load conditions.
Exhaust Smoke Density Test
. The maximum exhaust smoke density at full power position, with
breather tube disconnected, when measured within one foot of the exhaust outlet, should not
exceed the following conditions when using fuel conforming to Specification VV-F-800 (DF-2).
NOTE
Meter readings have precedence over visual reading
.
Engine rpm
No.
Visual
Robert Bosch
Meter Number
1800
3
Light Gray
3.5
2000
3
Light Gray
3.2
2200
2
Haze
2.6
2400
1
Clear
2.4
Fuel Consumption (Without Accessories).
When operating at full throttle under full load on a
dynamometer at a speed of 2400 rpm, engine should not consume more than 0.420 pounds per
brake horsepower hour (lbs/bhp/hr) fuel conforming to Specification VV-F-800 (DF-2).
Fuel Pressure
.
Fuel pressure at the injection pump inlet should be 40-60 psi at engine speeds
of 1800 to 2400 rpm.
Gross Horsepower (Without Accessories).
Under full throttle setting, engine will develop 735
to 780 gross horsepower at 2400 rpm using fuel conforming to Specification VV-F-800 (DF-2).
Gross Torque (Without Accessories).
Under full throttle setting, engine will develop the
following gross torque using fuel conforming to Specification VV-F-800 (DF-2):
•
•
1609 to 1707 foot-pounds at 2400 rpm
1770 to 1842 foot-pounds at 1800 rpm
Lubricating Oil Temperature
.
Temperature of oil in the engine oil pan sump should not exceed
250 °F (121 C
°
).
Temperature of oil entering the engine through the oil pump should be
maintained between 140 and 250 °F (60 and 121 C
°
).
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