Hybrid Cars Advantages And Disadvantages Pdf


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Hybrid electric vehicles or HEVs merge internal combustion engines with electric motors, offering improved fuel efficiency over cars that operate on gasoline only.

Many hybrid models do not have to be plugged in like electric vehicles because the batteries can be recharged from regenerative braking technology, electric motors or gasoline engines See Reference 1. Hybrid models can be classified by their drivetrains as series or parallel See Reference 2. The drivetrain consists of all the components needed to transfer power to the wheels.

Series hybrids offer various advantages and disadvantages when compared to parallel hybrid designs. Parallel drivetrain components commonly include the gasoline engine, electric motor, computer controls and battery.

The engine and motor are parallel to one another in the design and they both connect to the transmission to directly turn the wheels. The computer controls are needed to coordinate the engine and motor working together either independently or simultaneously depending on the power needs. The battery is, in part, recharged from regenerative braking, a technology that allows the storage of kinetic energy from coasting and braking. The electric motor can also help recharge the battery See Reference 2.

The components of the series drivetrain include an electric motor, gasoline engine, computer controls, battery and generator. In a series hybrid, only the electric motor directly turns the wheels. Rather than operating in parallel, the energy to drive the car is supplied in a series from one power source, the gasoline engine, to another, the electric motor.

The gasoline engine turns the generator that powers the electric motor. Batteries can be recharged from regenerative braking and from the engine and generator. Computer controls determine how much power to the motor comes from the battery or the engine or generator See Reference 2. The need for a complicated multi-speed transmission and clutch is eliminated in series hybrids since only the electric motor directly drives the transmission, which may have one gear.

Gasoline engines in series hybrids tend to be smaller and more efficient since they do not directly power the vehicle and are not subject to the highly variable power demands of stop-and-go driving These design features make series hybrids the ideal car for urban and suburban driving conditions. The smaller, more efficient engine and greater use of electric power helps reduce harmful gas emissions in series hybrids See Reference 2. The series hybrid requires a larger, more complicated battery and motor to meet its power needs.

The larger battery and motor and the addition of a generator often makes the series hybrid more costly than a parallel hybrid. Series hybrids are also not as efficient as parallel hybrids for highway driving since the engine is not directly connected to the wheels See Reference 2. Plug-in hybrid models are available in both series and parallel that allow for electric-only operation and zero tailpipe emissions on shorter distance trips.

The plug-in feature, however, also adds to the cost See Reference 3. The main purpose of purchasing a hybrid car is to improve mileage and reduce harmful gas emissions. As more hybrid cars enter the market, new designs and innovations are becoming available. Some hybrid models offer dual drivetrains that combine the advantages of series and parallel designs. They operate as series hybrids at low-speed driving conditions and as parallel hybrids under high-speed conditions See Reference 2.

Check the U. Department of Energy's "Find a Car" website to compare the prices, fuel economy and energy and environment ratings of various hybrid and conventional car models See Reference 4. The higher sticker price of hybrid cars may be offset by the savings in fuel over the life of the car. Carolyn J. Randall has more than 15 years of experience in writing and publishing.

Randall holds a Ph. By Carolyn J. Related Articles. How Do Hydrostatic Lawnmowers Work? Two-Stroke vs. Parallel Hybrid Parallel drivetrain components commonly include the gasoline engine, electric motor, computer controls and battery. Series Hybrid The components of the series drivetrain include an electric motor, gasoline engine, computer controls, battery and generator.

Advantages The need for a complicated multi-speed transmission and clutch is eliminated in series hybrids since only the electric motor directly drives the transmission, which may have one gear. Disadvantages The series hybrid requires a larger, more complicated battery and motor to meet its power needs.

Considerations The main purpose of purchasing a hybrid car is to improve mileage and reduce harmful gas emissions. References U.

Hybrid Cars -- Pros and Cons

Hybrid cars are becoming more popular and more common. Basically, a hybrid car is one that uses two or more engines i. The electric engine powers the car at lower speeds, and the gas engine powers it at higher speeds. There are also more government incentive programs that use credits and special discounts to support the purchase and use of hybrid vehicles. Wikipedia defines hybrid vehicle as,.

Hybrid electric vehicles or HEVs merge internal combustion engines with electric motors, offering improved fuel efficiency over cars that operate on gasoline only. Many hybrid models do not have to be plugged in like electric vehicles because the batteries can be recharged from regenerative braking technology, electric motors or gasoline engines See Reference 1. Hybrid models can be classified by their drivetrains as series or parallel See Reference 2. The drivetrain consists of all the components needed to transfer power to the wheels. Series hybrids offer various advantages and disadvantages when compared to parallel hybrid designs. Parallel drivetrain components commonly include the gasoline engine, electric motor, computer controls and battery. The engine and motor are parallel to one another in the design and they both connect to the transmission to directly turn the wheels.

What Are the Advantages and Disadvantages of Series Hybrid Designs?

January 19, feature. If you listen to the makers, hybrid cars are the best invention since sliced bread. While there are many reasons to buy a hybrid car, including a new tax incentive for US owners, it helps to have a good understanding of how they work. First off: What is a hybrid car?

Hybrid cars have become increasingly popular as of late. So in this article, we are going to look at the different types of hybrid cars and their advantages and disadvantages. The electric motor is used at low speeds.

Motor vehicles are a core technology of our modern life and economy. In response, some car companies have introduced the biggest change in automotive technology since early in the last century. Hybrid electric vehicles HEVs reduce emissions and fuel use through increased fuel economy. The following study measures such benefits.

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