Hybrid vehicles

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Hybrid vehicles

  1. 1. HYBRID VEHICLES
  2. 2. Definition <ul><li>A hybrid combines two methods for the propulsion of a vehicle. </li></ul><ul><li>Possible combinations include diesel/electric, gasoline/fly wheel, and fuel cell/battery. </li></ul><ul><li>Typically one energy source is storage and the other is conversion of a fuel to energy. </li></ul>
  3. 3. What is a HEV? <ul><li>Hybrid electric vehicles (HEV) include both a combustion engine as well as an electric motor. </li></ul><ul><li>The presence of the electric powertrain is intended to achieve better fuel economy than a conventional vehicle </li></ul><ul><li>The most common form of HEV is the hybrid electric car, although hybrid electric trucks (pickups and tractors) and buses also exist </li></ul>
  4. 4. Why do we need hybrids? <ul><li>Fuel efficiency is greatly increased. </li></ul><ul><li>Emissions are greatly decreased. </li></ul><ul><li>Dependency on fossils fuels can be decreased. </li></ul><ul><li>Hybrids can be run on alternative fuels as well. </li></ul><ul><li>Regenerative braking actually makes city driving more economical than on the highway. </li></ul>
  5. 5. History of Hybrids <ul><li>Numerous hybrids were designed at the turn of the 20 th century. </li></ul><ul><li>Some were concept cars for display at the Paris Automobile Salon. </li></ul><ul><li>Others were put into production on a small scale. </li></ul>
  6. 6. Early Hybrids <ul><li>THE LOHNER-PORSCHE </li></ul><ul><li>In 1899 Dr Ferdinand Porsche, engineer at Jacob Lohner & Co, built the first Hybrid Vehicle. </li></ul><ul><li>Lohner-Porsche petrol-electric mix used a petrol engine rotating at a constant speed to drive a dynamo, which charged a bank of accumulators. </li></ul><ul><li>These, in turn, fed current to electric motors contained within the hubs of the front wheels. </li></ul><ul><li>Therefore there was no need of drive shafts, transmission, gears, straps, chains, or clutch. </li></ul><ul><li>Due to its extreme simplicity the transmission operated without losses produced by mechanical friction </li></ul>
  7. 8. Early Hybrids <ul><li>KRIEGER HYBRID </li></ul><ul><li>The Krieger Hybrid made in 1903, used a gasoline engine to supplement a battery pack. </li></ul><ul><li>It is nearly identical to the 1903 Lohner-Porsche. </li></ul>
  8. 9. Early Hybrids <ul><li>WOODS GAS-ELECTRIC CAR </li></ul><ul><li>The first hybrids to enter production in the United States </li></ul><ul><li>Designed and developed by Baker and Woods who were graduate in electrical engineers. </li></ul><ul><li>Both were manufacturers of pure electric cars before designing and producing hybrids. </li></ul><ul><li>The 1902 Woods Phaeton EV, which was little more than a carriage with an electric motor, a top speed of 14 mph, and sold for $2000. </li></ul><ul><li>The body style was vintage 1910’s but the technology was advanced. </li></ul><ul><li>The Woods gas-electric car was expensive and could not compete with the pure electric cars of the day and in particular with the Ford Model T and it’s production was stopped due to lack of sales. </li></ul>
  9. 11. Honda Civic Hybrid Honda 2005 BMW X6 Active Hybrid BMW 2009 Hyundai Sonata Hybrid Hyundai 2010 Ford Escape Hybrid Ford 2004 Volvo ECC Volvo cars 1992 Fusco Aero Star Mitsubishi 1993 Honda Insight Honda 1999 Suzuki Twin Suzuki 2003 Toyota Prius Toyota 1997 Gaselle Honda 1986 GM XP 883 General Motors 1969
  10. 12. Components of a Hybrid
  11. 13. Why Hybrids get good gas mileage?
  12. 14. Types of Hybrid <ul><li>Parallel hybrids :- ICE and electric motor are both connected to the mechanical transmission and can simultaneously transmit power to drive the wheels </li></ul><ul><li>Series hybrids :- Here only the electric motor is used for powertrain, and the ICE works as a generator to power the electric motor or to recharge the batteries </li></ul><ul><li>Power-split hybrids :- These hybrids have the benefits of a combination of series and parallel characteristics. As a result, they are more efficient overall, because series hybrids tend to be more efficient at lower speeds and parallel tend to be more efficient at high speeds </li></ul>
  13. 15. Global-Warming: Still An Issue. <ul><li>Hybrids are not zero-emission vehicles. </li></ul><ul><li>Will cut down emissions of global-warming pollutants </li></ul><ul><li>Later models may cut these emissions down by even more. </li></ul>

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