Manakula Vinayagar Institute of Technology

HYBRID ELECTRIC VEHICLE

Presented byJ. Harish

HYBRID VEHICLES

A hybrid electric vehicle (HEV) is a type of hybrid vehicle and electric vehicle which combines a conventional internal combustion engine (ICE) propulsion system with an electric propulsion system

WHY HEV ?Regenerative braking actually makes city

driving more economical than on the highway.Fuel efficiency is greatly increased (twice).Emissions are greatly decreased.Dependency on fossils fuels can be

decreased. Can be run on alternative fuels as well.

Global-Warming: Still An Issue.Hybrids are not zero-emission vehicles.Will cut down emissions of global-warming

pollutants by a third to a half.Later models may cut these emissions down

by even more.

HEV MODEL

How HEVs WorkMMP HEV’s prolong charge on batteries

capturing KE via Regenerative Braking.

HEV’s use ICE to generate Electricity by spinning Electric Generator either to Recharge or to feed power

HOW HYBRIDS ELECTRICAL

VEHICLE (HEV) WORK?

BATTERY CONNECTED

CAR STARTS

BATTERY SUPPLY

About HEVsHEVs offer the efficiency of electric-powered vehicles

without having to recharge by using conventional engines and fuels.

Efficiencies are gained from motor down-sizing and regenerative braking.

Inherent flexibility allows use for numerous applications

CLASSIFICATIONSParallel Hybrids

Series Hybrids

Power-split Hybrids

PARALLEL HYBRIDS

SERIES HYBRIDS

POWER SPLIT HYBRIDS It combines both Series and Parallel HybridsSeries hybrids tend to be more efficient at

lower speeds and parallel tend to be more efficient at high speeds

Hence It is more efficient

HEV EFFIENCYThree key factors: Regenerative braking Engine size Vehicle weight & aerodynamic design

Efficiency Contd….Engine size = may be smaller than in a

conventional vehicle Engine is sized to accommodate average

load – not peak load

Vehicle weight/aerodynamic design: Built using special lightweight materials Uses advanced aerodynamics to reduce

drag

Advanced Technologies Regenerative Braking

Electric Motor Drive/Assist

Automatic Start/ Shut Off

HEVs in Transportation

Increasing gasoline prices are making HEVs very attractive to consumers.

HEVs are already available today(In , and their use will become more widespread as production picks up

ADVANTAGESReduced fuel consumption

Excellent gas mileagr

HEV is able to operate nearly twice as efficiently as traditional internal combustion vehicles

Lighter batteries than electric vehicles

Regenerative braking system stores electrical energy in Batteries

Uses less fuel to recharge batteries

CONCLUSIONSo, the HEVs have more efficiency, Low Fuel

Economy, High Reliability and Less Air Pollution.

Optimum Utilisation of these Vehicles will yield in good Results, especially Reduction of pollution.

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