TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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°).