How To Calculate Fuel Consumption Of A Diesel Engine?

It’s crucial to remember that depending on how fast you’re driving and other factors, your fuel consumption may reduce or increase. A gasoline meter put on your boat is the only true way to measure fuel use. However, while calculating your fuel use isn’t always perfect, it’s a wonderful place to start! On the sea, miles are difficult to measure, hence Gallons Per Hour (GPH) is utilized instead of the conventional MPH.

Pen and Paper Method

“…put in its horsepower rating and multiply it by the specific fuel consumption average, then divide the product by the fuel specific weight,” says the author. *

How do you calculate the fuel consumption of a diesel engine per km?

It is not difficult to calculate a vehicle’s fuel usage. Simply record the distance traveled since the last fill-up and the amount of fuel spent to cover that distance, then divide the litres consumed by the kilometres traveled and multiply by 100 to determine consumption in litres per 100 kilometers.

For example, if your vehicle used 60 litres of fuel to travel 450 kilometers, divide 60 by 450 and multiply by 100 for a rounded fuel consumption number of 13.3 litres per 100 kilometers.

With a fuel consumption figure, you can now determine your vehicle’s touring range by dividing the vehicle’s fuel tank capacity by the fuel consumption and multiplying by 100 once more.

What is fuel consumption of diesel engine?

The fuel efficiency of diesel and gasoline are not even close to being comparable. Diesel engines are usually 25% to 35% more fuel efficient than gasoline engines. Diesel engines provide a quarter to a third more “gas” mileage than gasoline engines.

A comparable diesel-powered vehicle will obtain anywhere from 37.5 to 40.5 miles per gallon if a gas-powered vehicle gets 30 miles per gallon. On the worst case scenario, a diesel engine will travel 40 miles for every 30 miles a gasoline engine will travel on the same amount of fuel. On average, a diesel engine will travel 100 miles for every 65 miles a gasoline engine travels on the same amount of fuel.

As a result, comparing the total number of emissions produced per gallon by a gallon of diesel to the total number of emissions produced by a gallon of gas is pointless.

How do you calculate diesel per km?

You may evaluate and compare monthly operating costs with our gasoline cost calculator. You can compare the daily, monthly, and annual fuel costs of one petrol, diesel, or CNG vehicle with those of another vehicle that uses a different fuel type. You only need to enter the cost of gasoline, diesel, or CNG per unit or per litre, as well as the expected mileage from the car.

Based on the selected city, the most recent gasoline price will be displayed automatically. You can also alter the city to see the most up-to-date gasoline, diesel, and CNG prices in your area. You can manually enter higher or lower fuel rates when calculating your car’s daily, monthly, or annual fuel costs. This will assist you in estimating the cost of operating your gasoline, diesel, or CNG car if fuel costs rise due to inflation or increasing crude oil prices.

How do you calculate fuel consumption per kWh?

In 2020, the average quantity of coal, natural gas, and petroleum liquid fuels required to create a kilowatthour (kWh) of electricity in the United States was1

In 2020, the average number of kWh created per unit of coal, natural gas, and petroleum liquid fuels consumed by the United States’ electric power industry was1

The figures above are based on annual data collected at the national level. Actual numbers for a particular generator or power plant may differ significantly from those listed above. The amount of fuel consumed to create electricity is determined by the generator’s efficiency (or heat rate) and the heat content of the fuel. The types of generators (primary movers), the type and heat content of fuels, power plant emission controls, and other factors all affect power plant efficiencies (heat rates).

The amount of fuel consumed to generate a kilowatthour (kWh) of electricity can be calculated using two formulas:

  • Heat rate (in British Thermal Units (Btu) per kWh) divided by Fuel heat content = Amount of fuel used per kWh (in Btu per physical unit)
  • Fuel heat content (in Btu per physical unit) divided by Heat rate = Kilowatthour created per unit of fuel used (in Btu per kWh)

The following are some of the data sources available from the US Energy Information Administration (EIA) for those calculations:

  • The average quality of fossil fuel receipts for the electric power industry is shown in Table 7.3. ( xls )

Appendices providing fuel heat contents, electricity heat rates, and conversion factors are included in the Monthly Energy Review.

On a national and state level, as well as at individual power plants, the EIA releases monthly and annual data on the amount of electricity generated and associated fuel consumption by electricity producers. This information can also be used to determine fuel use per kWh of electricity generated, as well as kWh generation per unit of fuel consumption.

  • Data on total power generation in the United States (Table(s) 7.2) and electricity generation fuel consumption (Table(s) 7.3).
  • Historical power data files at the state level, including annual and monthly electricity generation and fuel usage.
  • Data on fuel consumption and electricity generation at individual power plants in the United States, broken down by fuel/energy source.

1 In combined heat and power plants, fuel is not used for usable thermal output.

Other FAQs about Oil/Petroleum

  • Is there information from the EIA on the rail movement (transport) of crude oil, petroleum products, gasoline ethanol, and biodiesel?
  • Does the EIA provide state-by-state estimates or projections for energy output, consumption, and prices?
  • Is the EIA aware of any unplanned disruptions or shutdowns of energy infrastructure in the United States?
  • A kilowatthour of electricity is generated using how much coal, natural gas, or petroleum?
  • What percentage of the crude oil produced in the United States is used in the country?

How many kWh is a litre of diesel?

The energy content of one litre of diesel fuel (auto) is approximately 38 MJ, which is roughly 10 kWh (using a ballpark figure), however the conversion efficiency into kinetic energy is only about 30%, which is better than petrol, which is normally 25% depending on the design.

How do you calculate fuel per hour?

Divide the amount of miles you went by the time it took you to arrive at your average pace. For example, if you went 200 miles in 4 hours, your average speed would be 50 miles per hour. To calculate how many gallons of fuel you’re burning every hour, multiply your average speed by the miles per gallon.

What is the rate of fuel consumption?

Before going any further, it’s important to define the terms fuel efficiency and fuel consumption; these two phrases are frequently used interchangeably and erroneously, resulting in misunderstanding and inaccurate interpretations:

Fuel economy is a metric that expresses how far a vehicle can go on a single gallon of gasoline. It is measured in miles per gallon. This is a common metric in the United States that has been used for a long time by customers; it is also used by vehicle makers and regulators, mostly to communicate with the public. Fuel economy is a metric that measures the distance traveled per unit of fuel.

The inverse of fuel economy is fuel consumption. It is the amount of fuel used to travel a specific distance. It is measured in gallons per 100 miles in the United States, and in liters per 100 kilometers in Europe and other parts of the world. Fuel consumption is a basic engineering statistic that is directly related to the amount of fuel spent per 100 miles and can be used to calculate volumetric fuel savings. It is actually fuel usage that is the issue.

How is diesel usage calculated?

You won’t be able to tell if your new driving style and skills are effective unless you know your car’s average miles per gallon (mpg). On-board computers are available in some vehicles, however they are not always reliable.

  • Subtract the number of miles travelled from the litres of gasoline consumed (miles per litre)


Stages one and two are completed by Frank. When he next fills up, his trip meter reads 160.1 miles. Filling his tank takes 22.3 litres. Frank calculates his gasoline consumption to be: