How do you calculate the efficiency of the car?

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.

1. What is the efficiency of a car?
2. How do you calculate the energy efficiency of an electric car?
3. How do I calculate my car energy consumption?
4. How do you calculate energy efficiency ratio?
5. How do you calculate the energy of a car?
6. How do you calculate net efficiency?
7. How do you calculate energy efficiency examples?
8. How many kW is a kWh?
9. What is the energy consumption of a car?

What is the efficiency of a car?

Sadly, even with regular car maintenance such as a tune-up or an oil change, today's gasoline engines are only around 30 to 35 percent efficient, which means roughly 65 cents out of every dollar you spend on gas goes to waste.

How do you calculate the energy efficiency of an electric car?

We know that 1 Wh = 3600 J, so 90 Wh = 324,000 J. And the power plant efficiency, conversion and transmission losses in electricity in India are 70% or more. So an Indian electric car @ 90 Wh/km has an efficiency of 1/(3600 divided by (100% minus 70%)) x 10^6 x (1/90) km/Wh = 0.93 km/MJ.

How do I calculate my car energy consumption?

The acceleration and braking energies are calculated separately and then summed up to give the total energy. By dividing the last calculated value of the total energy ( 3205.39 Wh ) to the total length of the WLTC drive cycle ( 23.266 km ), we get the average energy consumption of the vehicle, 137.8 Wh/km .

How do you calculate energy efficiency ratio?

EER stands for Energy Efficiency Ratio. The EER rating for an air conditioner is calculated by dividing the BTU (British Thermal Units) rating by the wattage. For example, a 12,000-BTU air conditioner that uses 1,200 watts has an EER rating of 10 (12,000/1,200 = 10).

How do you calculate the energy of a car?

For the car going from 40 mph to 60 mph, the KE = 1/2*m*60² - 1/2*m*40²; so KE = 1,800 m - 800 m, or 1000 m. Comparing the two results, we can see that it takes a KE of 1,000 m to go from 40 mph to 60 mph, whereas it only takes 200 m to go from 0 mph to 20 mph.

How do you calculate net efficiency?

Gross efficiency (GE) is expressed as the percentage ratio of external work performed to the total production of energy (i.e. total energy expenditure) during the exercise: GE = W × 100/E, where W is the external work performed and E is total energy expenditure Net efficiency is expressed as the percentage ratio of ...

How do you calculate energy efficiency examples?

Energy efficiency is calculated by dividing the energy obtained (useful energy or energy output) by the initial energy (energy input). For example, a refrigerator has an energy efficiency of 20 to 50%, an incandescent bulb about 5%, a LED lamp over 30%, and a wind turbine 59% at most.

How many kW is a kWh?

1 kWh equals one hour of electricity usage at a rate of 1 kW, and thus the 2 kW appliance would consume 2 kWh in one hour, or 1 kWh in half an hour. The equation is simply kW x time = kWh.

What is the energy consumption of a car?

The values of the total unit energy consumption of the car in real road conditions for the internal combustion drive are within the range 1.25–2.95 (J/(kg·m)) in relation to the electric drive 0.27–1.1 (J/(kg·m)) in terms of instantaneous values.