Volume Test
Objectives: Volume
test must reveal that the gas tank plus the filler neck will hold 1.5
gallons of fuel with the foam inside the tank. The need to perform this test
comes from the need to check for any manufacturing error or any miscalculation
of the space that the foam takes up.
Method: We first weighed a container that had more then enough gasoline to fill the entire volume of the tank. We then filled our tank to capacity and weighed the difference is the gas can. This difference was found to be 9.2 lbs.
Results: The tank it's self without the filler neck held 1.375 gallons. With the addition of the filler neck it was calculated that the tank holds 1.515 gallons using 6.073 lbs/US Gal as the density of unleaded gas.
Pressure Test
Objective: to ensure that the tank is structurally sound.
The pressure test also helps find leaks.
Method: To pressurize the tank we used pneumatic and gas fittings to connect to the fuel outlet. We then hooked it up to the shop air supply will the pressure gauge read 10 PSI.
Results: First test showed almost a complete pressure vessel there was one small pin hole in a weld that we had to go over and subsequently we re tested the tank and it holds pressure without an issue
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| pressure Gage attached threw they vent thread |
Leak Test
Objective: to ensure that in use the tank will not let any
fuel leave the tank through any spot that was not designed to let the fuel out.
Method: This involved pressurizing the gas tank in a vat of water. We were looking for possible bubbles, these bubbles would indicate a leak and a failure of a complete weld in a seam of the gas tank.
Results: First test showed no lacks while not under pressure and the second test under pressure the tank was almost a complete pressure vessel there was one small pin hole in a weld that we had to go over and subsequently we re tested the tank and the tank holds pressure no problem
Weight Test
Results: First test showed no lacks while not under pressure and the second test under pressure the tank was almost a complete pressure vessel there was one small pin hole in a weld that we had to go over and subsequently we re tested the tank and the tank holds pressure no problem
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| Pressurized Gas tank in water |
Weight was 5.05 lbs witch is a reduction of .9 lb's from last years tank
