HYBRID ELECTRIC

NAME :- JERRY PATELB.TECH 8th SEM

VEHICLE

CONTENT• Hybrid Vehicle• Gasoline hybrid electric vehicle• Gasoline power vs Electric power• Electric power car• Why alternative needed• Some of the advt. tech. typically used by hybrid include• Various type of hybrid vehicle• Series hybrid• Parallel hybrid• ADVT. of HEV’s• Disadantage of hybrid cars

HYBRID VEHICLE Any vehicle that combines two or more sources of power that

can directly or indirectly provide propulsion power is a hybrid.

Examples :- Trains ---Diesel-Electric Hybrid Cars - Gasoline- Electric Hybrid Submarines- Nuclear –Electric,Diesel-Electric

Gasoline Hybrid Electric Vehicle

Hybrid electric vehicles ("HEVs") = Internal combustion engine + electric motor powered by batteries.

Less fuel than traditional counterparts and without recharging.

Same as driving any other conventional vehicle. We all have owned a hybrid Vehicle at sometime.

E.g. Moped

Gasoline power Vs Electric PowerGas powered car Electric powered car

It has a fuel tank, which supplies gasoline to the engine. The engine then turns a transmission, which turns the wheels

On the other hand, it has a set of batteries that provides electricity to an electric motor. The motor turns a transmission, and then it turns the wheels.

Electric Powered CarADVANTAGE

DISADVANTAGE

Energy efficient. Environmentally

friendly. Performance

benefits. Reduce energy

dependence

Driving range. Recharge time. Battery cost: Bulk & weight.

Why Alternative Needed?Pollution caused by conventional cars Increasing prices of fuel day by day Fuel is a limited natural source Better Mileage In fact, gasoline-fueled HEVs are among a select few

vehicle technologies that can dramatically increase fuel economy, while reducing pollution and delivering top safety and performance.

Some of the adv. Tech. typically used by hybrids include

Regenerative Braking Electric Motor Drive/Assist Automatic Start/Shutoff Use low-rolling resistance tires Use lightweight materials

Various type of hybrid vehiclesSERIES HYBRID VEHICLE

PARALLEL HYBRID VEHICLE SERIES PARALLEL HYBRID VEHICLE

Series HybridSimplest hybrid configuration. Electric motor is the only means

of providing power . Engine size is smaller The battery pack more

powerful . Series hybrids more expensive . Engine in a series hybrid is not

coupled to the wheels. Series drivetrains perform best

in stop-and-go driving .

Power flow in series hybrid

Gasoline motor turns a generator

Generator may either charge the batteries or power an electric motor that drives the transmission

At low speeds is powered only by the electric motor 11

Parallel HybridSimplest hybrid configuration. Electric motor is the only means of providing power . Engine size is smaller The battery pack more powerful . Series hybrids more expensive . Engine in a series hybrid is not coupled to the wheels. Series drivetrains perform best in stop-and-go driving .

Power flow in a typicall parallel hybrid vehicle

Series/Parallel hybrid  Merges the advantages and complications of the parallel

and series. Engine can both drive the wheels directly and be effectively

disconnected from the wheels . The Toyota Prius ,new Ford Escape Hybrid. Engine operates at near optimum efficiency more often. This system incurs higher costs than a pure parallel hybrid. It needs a generator, a larger battery pack, and more

computing power to control the dual system It has potential to perform better.

Hybrid Milage TipsYou can get the best mileage from a hybrid car by using the same kind of driving habits that give you better mileage in your gasoline-engine car:

Drive slower Maintain a constant speed Avoid abrupt stops

Advantage of HEV’sUse less oil than ICE Emit less CO2 than ICE Fuel efficiency increased Less overall mass Regenerative braking Battery level efficiency

Technology challengesTime of battery changing is long Batteries are heavy (100kg extra weight consumes

2L/100km more) Batteries are expensive Low performance in hot or cold temperatures also

may damage the battery Very sensitive to overcharge/undercharge(Battery life

reduces dramatically) Contain toxic heavy metals, disposal issue 

Disadvantage of hybrid cars

 Currently more expensive than conventional Heavier than conventional, due to battery pack and

electric motors weight Limited battery life Expensive battery pack if you want to replace it Safety issues, high voltage battery and fuel Reliability, still under study, More complex computer controlled systems Expensive to repair

Commercial modelsToyota Prius Toyota Highlander Ford Escape Mercury Mariner Honda Insight Honda Civic HEV Honda Accord HEV

Thank you