PRESS FOR NEXT SLIDE PRESS TO END SLIDESHOW 1. PRESS FOR NEXT SLIDE PRESS TO END SLIDESHOW Burning...
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Transcript of PRESS FOR NEXT SLIDE PRESS TO END SLIDESHOW 1. PRESS FOR NEXT SLIDE PRESS TO END SLIDESHOW Burning...
HOW TECHNOLOGY AND YOU CAN SAVE FUEL AND THE ENVIRONMENT
PRESS FOR NEXT SLIDE
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Burning gasoline to power vehicles pollutes the air and causes smog
Emissions from cars contribute to global warming
You can help save the environment by using fuel more efficiently
Vehicle Pollution and the Environment
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With this setup you can:
Check out new vehicle technologies and how they can improve fuel economy
Test different driving habits and see how YOU can save fuel to help the environment
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Internal Combustion Engine (Gas) Vehicles
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A mixture of gasoline and air powers the engine
Engine emissions pollute the air
Only about 14-26% of fuel energy is used – much of it is lost in the engine as heat
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Hybrid Vehicles
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They are powered by both an electric motor and a gasoline engine
Regenerative braking turns vehicle kinetic energy into reusable electricity while braking
Engine turns off when the car is stopped; restarts when the car moves
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Electric Vehicles (EV)
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Rechargeable batteries provide power to an electric motor
Less use of fossil fuels
EVs convert over 80% of battery energy to power the wheels
No exhaust gas!
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Energy Losses and Vehicle Efficiency:
There are a lot of reasons why a vehicle loses energy. Some of the main reasons are:
Air resistance
Rolling resistance
Type of vehicle you drive
Your driving style
Amount of fuel used
Engine losses
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Driving style7
Air Resistance: FD=0.5ρv2CdA When driving at
highway speeds, wind resistance takes about 40% of your car’s energy
More speed More energy lost
Air resistance is directly proportional to the square of the vehicle’s velocity
FD is the force of drag on the vehicle ρ is the density of airV is the speed of the vehicle relative to the airCd is the drag coefficient A is the vehicle front area
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Rolling Resistance: F=CN
Low tire pressure increases rolling resistance
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F is the force of rolling resistanceC is rolling resistance coefficient N is the tire normal force
Rolling resistance is related to the mass of the vehicle and the rolling coefficient
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By using less engine RPM, you can lower engine losses
Engines need to breath! Keep engines’ air filters clean to save fuel
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Engine Losses
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Engine speeds are measured by Rotation Per Minute or RPM
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Drive slower to help lower air resistance
Make sure your tire pressure is right. Low tire pressure increases fuel consumption
Don’t drive aggressively! Try not to brake or accelerate more than you need to
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Tips For Better Driving
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We are grateful for the financial support of Ontario Research Fund and Automotive Partnership Canada for the development of this setup.
The contributions of Kevin Cochran, Mitch Rushton, Babak Ebrahimi, Xiang Fang, and Adrian Neil have been significant in the design, fabrication and programming of this setup and are very appreciated.
Amir Khajepour, PhD, PEngProfessor and Canada Research Chair in Mechatronic Vehicle SystemsPrincipal Investigator, Green Intelligent Transportation Systems – Green ITS
Acknowledgments
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