An engine dynamometer measures torque (lb-ft), not mechanical energy (ft-lb); and an engineâs âtimeâ is expressed in revolutions per minute (rpm). Since 6.28 ft-lb of work is about equal to 1 lb-ft of torque, you can substitute the eqautions in Figure 2.
DEF weighs approximately 9 lbs per gallon. Compared to diesel fuel at approx 7.05 lbs and gasoline at an average of 6.19 lbs, DEF is a relatively heavy product.ow much DEF can I haul? With DEF weighing in at around 9lbs per gallon, we estimate that with a tandem axle truck tank you will be able to haul just over 3000 gallons in most states. For trailers the capacity will be around 5,000 gallons.
How much does ice weigh? According to the USGS Water Science School, a gallon of water at 70 F weighs approximately 8.33 pounds. To arrive at the weight of a cubic foot of water, multiply the weight of one gallon of water by the total number of gallons in a cubic foot, which is 7.48 gallons. The product of the two numbers, and thus the approximate weight in pounds of a cubic foot of water, is 62.30.