BY: M.SHIVA KUMAR

Introduction

Types of hybrid electric vehicle

Types hybrid technologies

Fuel consumption

Noise

In the next 5 year’s

Advantages of HEV’S

Disadvantages of HEV’S

Conclusion

A hybrid vehicle is one that uses two different methods to propel the vehicle.

A hybrid electric vehicle, abbreviated HEV uses both an internal combustion engine and an electric motor to propel the vehicle.

Most hybrid vehicles use a highvoltagebattery pack and a combination electric motor and generator to help or assist a gasoline engine.

HYBRID VEHICLE

View of the components of the General Motors electric vehicle (EV-

1).Many of the features of this vehicle, such as regenerative braking and

DC-to-DC converters, currently used on hybrid vehicles were first put into

production on this vehicle.

HYBRID VEHICLE

General Motors EV1 shown without the body.

There are three types of HEV,s

1. Series

2. Parallel

3. Series-parallel

CLASSIFICATIONS OF HYBRID-ELECTRIC VEHICLES

A drawing of the power flow

in a typical series hybrid

vehicle.

CLASSIFICATIONS OF HYBRID-ELECTRIC VEHICLES

The power flowing in a typical parallel hybrid vehicle.

CLASSIFICATIONS OF HYBRID-ELECTRIC VEHICLES

A series-parallel hybrid design

allows the vehicle to operate in

electric motor mode only or in

combination with the internal

combustion engine.

Different vehicle manufacturers use various hybrid technologies.› Mild Hybrid

› Medium Hybrid

› Full Hybrid

1. Hybrids use two different power sources to propel the vehicle.

2. A mild hybrid with a lower voltage system (36–50 volts) is capable of increasing fuel economy and reducing exhaust emissions but is not capable of using the electric motor alone to propel the vehicle.

3. A medium hybrid uses a higher voltage than a mild hybrid (140–150 volts) and offers increased fuel economy over a mild hybrid design but is not capable of operating using the electric motor alone.

4. A full or strong hybrid uses a high-voltage system (250–650 volts) and is capable of operating using the electric motor(s) alone and achieves the highest fuel economy improvement of all types of hybrids.

Current HEVs reduce petroleum consumption under certain circumstances, compared to otherwise similar conventional vehicles, primarily by using three mechanisms:

Reducing wasted energy during idle/low output, generally by turning the ICE off

Recapturing waste energy (i.e. regenerative braking)

Reducing the size and power of the ICE, and hence inefficiencies from under-utilization, by using the added power from the electric motor to compensate for the loss in peak power output from the smaller ICE.

Reduced noise emissions resulting from substantial use of the electric motor at idling and low speeds, leading to roadway noisereduction.

in comparison to conventional gasoline or diesel powered engine vehicles, resulting in beneficial noise health effects (although road noise from tires and wind, the loudest noises at highway speeds from the interior of most vehicles, are not affected by the hybrid design alone).

Reduced noise may not be beneficial for all road users, as blind people or the visually impaired consider the noise of combustion engines a helpful aid while crossing streets and feel quiet hybrids could pose an unexpected hazard.

IN THE NEXT 5 YEARS…

Growing demand

Greater market

Car companies will

respond

More variety

The current hybrid cars, emit less pollutants than the market average. For example, Honda Insight has 67% less of annual greenhouse gas emission. Furthermore, car manufactures are exploring way to reduce total emission in future hybrid cars.

Hybrid cars use much less gasoline than standard vehicles, preserving oil reserves for other uses such as heating oil and polymer synthesis.

In a effort to cut off gasoline consumption in car, research is underway to explore for alternative fuels, such as fuel cells and corn-derived fuels.

More car batteries will need to be made, creating a larger problem for disposal of such batteries.

HEVs do not totally eliminate burning of fossil fuels, they just delay the rate at which we burn them.

The price range for HEVs is $17,400 -> $26,000. The current price range does not target an average household.

The manufactures have gone through considerable pains to reduce the weight of the vehicle so that it burns less gasoline while achieving a reasonable acceleration. This has raised questions as to how safe the car is when it is involved in an accident.

CONCLUSION

Air pollution is a

serious concern

Fallbacks to Fuel

Cell economy

In the short run HEVs

seem to be a viable

alternative