Divide mileage by fuel consumption to see the fuel consumption of your car. This tells you how many miles you drove per gallon of gasoline. Divide the number of kilometers by the number of liters consumed. If you have traveled 100 km on the move and at the time of recharging, the vehicle consumed five liters of fuel, your efficiency is 20 kmpl.
It is also recommended to download an application where you can store the data and this will help you calculate monthly or annual fuel costs. Again, the thermal efficiency of a heat engine, a compression-powered diesel engine, or a gasoline spark-powered engine, for example, is determined by the compression ratio. Thermal efficiency is a measure of the amount of energy that goes to an engine is converted into mechanical power and the amount of energy that is wasted. A heavily loaded vehicle will need more energy to accelerate than an unloaded one, and therefore will use more fuel.
Towing a trailer can also have a big influence on fuel consumption; not only does your vehicle have to bear a greater load while accelerating, but it will also be less aerodynamically efficient with a coupled trailer, especially a large one such as a tandem axle caravan. The ideal ratio of air to oxygen is called the stoichiometric ratio and is 14 parts air to one part fuel in spark-ignition gasoline engines. By adding more fuel to a mixture than air can oxygenate, it means that a portion of the gasoline expels the exhaust without burning. Given the calorific value of a fuel, it would be trivial to convert units of fuel (such as liters of gasoline) to units of energy (such as MJ) and vice versa.
Simple things like keeping tires properly inflated, having a vehicle in good condition, and avoiding idling can dramatically improve fuel efficiency. The average fuel economy for all vehicles on the road is higher in Europe than in the United States because higher fuel costs change consumer behavior. If the amount of fuel is greater than the available air (rich fuel mixture), there will be some unburned fuel left after combustion occurs. Non-transportation applications, such as industry, benefit from increased fuel efficiency, especially fossil fuel power plants or industries dealing with combustion, such as the production of ammonia during the Haber process.
In the context of transportation, fuel economy is the energy efficiency of a particular vehicle, given as a ratio of the distance traveled per unit of fuel consumed. And the amount of mechanical energy produced by the fuel that actually burns is much less than 50 percent. They then travel until the fuel gauge empties and therefore a figure is achieved that is inaccurate.
Fuel efficiencydepends on many parameters of a vehicle, including engine parameters, drag, weight, AC usage, fuel, and rolling resistance.
For some modern turbo-diesel engines, for example, it could be that the diesel particulate filter (DPF) has performed a combustion cycle and normal fuel consumption will resume once the cycle is completed.