energy use in cars

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Energy Use in Cars 6: Gasoline Cars vs. Bicycles Keywords: air resistance, bicycle, energy use in cars, fuel economy, rolling resistance, vehicle transportation

When does a car have the same fuel efficiency as a bicycle?

A comparison of the energy cost of transportation between cars and bicycles.

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6 years 44 weeks ago
Energy Use in Cars 5: Gasoline Cars vs. Electric Cars Keywords: electric cars, energy use in cars, fuel economy, vehicle transportation

How do the greenhouse gas emissions of electric and gasoline cars compare?

A comparison of the energy cost and greenhouse gas emissions of gasoline and electric cars.

 

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6 years 44 weeks ago
Energy Use in Cars 4: Regenerative Braking Systems Keywords: energy use in cars, fuel economy, regenerative braking, vehicle transportation

What single system could be added to a gasoline car to improve its city driving fuel economy by 30-40%?

A calculation of the fuel consumption due to stop-and-go driving, for the purposes of estimating potential savings from a regenerative braking system.

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6 years 44 weeks ago
Energy Use in Cars 3: Rolling Resistance Keywords: energy use in cars, fuel economy, rolling resistance, vehicle transportation

Why does Natural Resources Canada recommend keeping your tires inflated to conserve gasoline?

A rough calculation of rolling resistance in cars explores the impact of having underinflated tires.

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6 years 44 weeks ago
Energy Use in Cars 2: Constant Speed Cruising Keywords: air resistance, drag, efficiency, energy use in cars, fuel economy, vehicle transportation

If a body in motion tends to stay in motion, why do we need to burn gas to travel at highway speeds?

Why do we need to burn gas to keep travelling at the same speed? The basic answer is "because if we didn't, eventually the car would stop." In everyday life, there is always friction and air resistance that opposes any motion, and if you leave a moving object alone, this friction and drag will eventually cause it to stop. This lecture looks at how this drag impacts a car.

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6 years 45 weeks ago
Energy Use in Cars 1: Stop-and-Go Driving Keywords: efficiency, energy use in cars, fuel economy, kinetic energy, vehicle transportation

When does cycling cost more in fuel than driving?

People recommend commuting by bicycle rather than by car to save energy. However sometimes when a cyclist pushes the button to make a traffic light change, it means that a bus full of people has to stop. When a cyclist makes the bus stop like this, is the extra fuel it has to burn to get back up to speed MORE than the fuel saved by choosing to commute by bicycle rather than car?

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6 years 45 weeks ago
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