How many liters difference does 1 degree temperature change make for gasoline?
1 Answers
Assuming a fuel tank capacity of 50 liters, refueling at 6:00 AM would yield approximately 0.075 kg more gasoline compared to refueling at 2:00 PM. Due to seasonal climate variations, gasoline density experiences minor fluctuations, with an average density of 0.725 g/mL for 93-octane gasoline. Therefore, 0.075 kg of gasoline equates to approximately 0.103 liters. Below is relevant information about gasoline: 1. Gasoline shelf life: Similar to food, gasoline has a shelf life. Its key components include carbon and hydrogen elements, with dienes undergoing oxidation upon air exposure. The optimal freshness period for gasoline is two months, during which it performs at peak efficiency for engine combustion. Beyond this period, quality gradually deteriorates. 2. Fuel tank materials and sealing: Storage in metal or glass containers can significantly extend gasoline's shelf life due to superior airtightness. However, modern vehicles predominantly use plastic fuel tanks, which cannot achieve complete air isolation compared to these containers. Metal tanks, while more effective, may increase vehicle weight or manufacturing costs. 3. Ethanol vs. regular gasoline: Ethanol-blended gasoline has a shorter shelf life of approximately one and a half months. The upcoming promotion of E10 gasoline (10% ethanol content) is noteworthy. Additionally, there's no need to worry about residual old gasoline affecting new fuel in the tank, as the older gasoline settles at the bottom and is consumed first.
