Energy/Power content of Gasoline

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SUMMARY

The energy content of gasoline is approximately 35.97 kWh per gallon, leading to a total of 539.55 kWh for a typical 15-gallon tank. This calculation is based on the energy density values of 31.6 MJ/L and 131 MJ/US gallon. The initial claim of 10,000 kW or 10 MW for a tank of gasoline is incorrect and likely misinterpreted, as it does not account for the discharge time necessary to convert energy into power. Accurate calculations are essential for understanding the energy potential of gasoline in automotive applications.

PREREQUISITES
  • Understanding of energy conversion units (kWh, MJ)
  • Basic knowledge of gasoline energy density
  • Familiarity with automotive fuel tank capacities
  • Ability to perform unit conversions (liters to gallons)
NEXT STEPS
  • Research the energy content of alternative fuels, such as ethanol and diesel
  • Learn about energy efficiency in internal combustion engines
  • Explore the relationship between energy density and vehicle range
  • Investigate the impact of fuel quality on energy output
USEFUL FOR

Automotive engineers, energy analysts, and anyone involved in fuel efficiency research or alternative energy solutions will benefit from this discussion.

GoldenAtlantis
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I am trying to find how many kW in a tank of gasoline. I was wondering if someone can confirm this for me. I read in a article on a EV site that he mentioned 10,000 kW, 10 MW (for a tank of gasoline). The guy was from a national lab so I am trying to work the math out. I do not know the discharge time. Thanks

My information/Calculations:
Background: typical four door car, 15 gallon tank
31.6 MJ/L
42.7 MJ/kg
131 MJ/US Gallon
35.97 kWh (per gallon)
539.55 kWh (per tank, 15 gallons)
 
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I get 33.35 per gal. I converted liters directly to gallons via the 3.8L/gal
 
Thanks

Thanks for the help
 

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