How fuel consumption is measured?
For example, if you used 25 gallons of gas, and drove 500 miles during that time, then your average fuel consumption would be 20 miles per gallon (500 miles / 25 gallons = 20 mpg).
- Formula To Estimate Maximum Engine Fuel Consumption. Gallon Per Hour (GPH) = (specific fuel consumption x HP)/Fuel Specific Weight. ...
- 300-hp Diesel Engine Example. GPH = (0.4 x 300)/ 7.2 = 105/7.2 = 16.6 GPH.
- 300-hp Gasoline Engine Example. GPH = (0.50 x 300)/ 6.1 = 150/6.1 = 24.5 GPH.
- Other Related Resources:
The density of the fuel used (measured at 15 degrees Celsius), along with the emission of hydrocarbons, carbon monoxide and carbon dioxide are pooled together in a calculation to determine fuel consumption. - Tyre pressures, engine oil viscosity and all other consumables are to be at recommended manufacturer levels.
The calculation is simple. Divide the number of kilometers by the number of litres consumed. If you have covered 100km on the run and at refill, the vehicle has taken in five litres of fuel, your efficiency is 20kmpl.
The calculation is: litres / distance * 100 = l/100km. For example: 57 litres / 635 km * 100 = 8.98l/100km. If you know the price of fuel, then you can simply multiply the price per litre by the result and that gives you your cost per 100km.
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To convert Formula to use.
| km per litre to litres per 100 km | divide 100 by km per litre |
|---|---|
| litres per 100km to km per litre | divide 100 by litres per 100 km |
Fuel consumption has the dimension volume of petroleum per length or length per volume of petroleum. The three standard units of fuel consumption are the liter of petroleum per 100 kilometers, the mile per gallon of petroleum, and the kilometer per liter of petroleum.
Anything that is listed as less than 6-litres/100km or more than 16.5km/1-litre is considered to be pretty good. The first (and most common) reference is litres per 100km (litres/100km). This is how many litres of fuel the car needs in order to travel 100km. You'll often see it referred to as 'fuel economy'.
On average, the fuel economy display of the vehicles tested showed a relatively low error of 2.3% compared to the fuel economy measured by in lab testing.
In the European Union, passenger vehicles are commonly tested using two drive cycles, and corresponding fuel economies are reported as "urban" and "extra-urban", in liters per 100 km and (in the UK) in miles per imperial gallon.
Do car manufacturers lie about mpg?
No, it doesn't. It emits what it emits (the calculation is simple – divide the number 6740 by the car's mpg for petrol engines, 7440 by mpg for diesel). This all adds up to taxman trickery and is, put simply, a con – a con on your wallets, on the taxman and on the environment.
Combined fuel economy is a weighted average of City and Highway MPG values that is calculated by weighting the City value by 55% and the Highway value by 45%. This text indicates the category of the vehicle (e.g., Small SUV, Station Wagon, Pickup Truck, etc.)
