TM-9-2815-205-24 Technical Manual for M113 Engine 6V53 6V53T Download
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Horsepower Correction and Acceptance 1. See Table 3 for listing of required terms. Table 3. List of Required Terms. Symbol Name Units BAROo Observed Barometric Pressure inches Hg BAROd Dry Barometric Pressure inches Hg T Engine Air Intake Temperature °F Tdb Dry Bulb Temperature °F Twb Wet Bulb Temperature °F VP Water Vapor Pressure inches Hg CFa Air Correction Factor HP CFsg Fuel Specific Gravity Correction Factor HP CFft Fuel Temperature Correction Factor HP BHPo Brake Horsepower Observed HP BHPc Brake Horsepower Corrected HP 2. Dry Barometric Pressure a. Record observed local barometric pressure (BAROo). b. Measure wet-bulb and dry-bulb temperatures (Twb and Tdb). c. See Table 4 for water vapor pressure (VP) at observed wet-bulb and dry-bulb temperatures. Table 4. Water Vapor Pressure (VP) in Inches HG from Wet Bulb and Dry Bulb Temperatures. Wet Bulb Temperature Dry Bulb Temperature 50°F 55°F 60°F 65°F 70°F 75°F 80°F 85°F 90°F 55°F 0.31 0.43 60°F 0.25 0.38 0.52 65°F 0.27 0.33 0.47 0.62 70°F 0.15 0.27 0.41 0.57 0.74 75°F 0.09 0.22 0.36 0.51 0.68 0.87 TM 9-2815-205-24 0101 0101-16