Mechanical engineering

1. A
SEMINAR ON
ELECTRIC VEHICLE : THE NEED OF TODAY
Presented By
Mr. Rohan R. Jadhav Mr. Rahul R. Kundiya
VPM’s Maharshi Parshuram College of Engineering
Department of Mechanical Engineerimg

2. Contents
 Introduction
 History
 How an Electric Car Works?
 Need of Electric vehicle
 Advantages
 Challenges And Future
 Reference

3. Introduction
 Electric vehicle is an automobile propelled by one or more electric motors,
drawing power from an onboard source of electricity. Electric cars are
mechanically simpler and more durable than gasoline-powered cars.
 They produce less pollution than do gasoline-powered cars. An electric car
stores its energy on board-typically in batteries, but alternatively with
capacitors or flywheel storage devices.

4.  Electric cars were prevalent in early 20th century, when electricity was
preferred in automobile propulsion.
 The energy crisis of 1970s and 1980s brought a renewed interest in electric
vehicles.
Tesla Roadster, 2008
Electric Car by Siemens,1904
History

5. How an Electric Car works?

6. Basic Principle
 An Electric car is powered by an Electric Motor rather than a Gasoline
Engine.
 The Electric Motor gets its power from a controller.
 The Controller is powered from an array of rechargeable batteries.

7. Need of Electric Vehicle
 Electric cars are mechanically simpler and more durable than gasoline-
powered cars.
 They produce less pollution than do gasoline-powered cars.
 While the internal-combustion engine of a conventional car has many
moving parts and must convert the linear motion of pistons and rods into
rotary motion at the wheels, an electric motor has only a single rotating
element.

8. Advantages
 Pollution free.
 Most electric cars do not have clutches or multi speed transmissions.
 Simple Construction
 Light Weight

9. Challenges
 Battery Problems
 Long recharging time - refueling required only minutes.
 Battery weight - 100 pound Lead acid batteries = 1 pound of gasoline.
 Battery costs.
 Running Costs
 0.03 – 0.04 $/mile.
 Extremely low as compared to gasoline cars.
 Motors last long.
 Reduced maintenance
 No motor oil or oil filters to change.
 No Smog equipment to check.
 No Engine Servicing required

10. Future Developments
 Improved Batteries
 Lithium Polymer.
 Zinc Air Batteries.
 Lithium Cobalt Metal Oxide
Fig. Solar Electrical Vehicle

11. References
 http://en.wikipedia.org/ .
 www.howstuffworks.com .
 “Build your own electric vehicle”, Seth Leitman and Bob Brant, second
edition, McGraw Hill, 2009.
 Brian Randall Tesla Presentation 2008.
 www.teslamotors.com .

12. •Thank you.....