1 Hybrid Electric Vehicles

A hybrid electric vehicle (HEV) is a vehicle in which at least one of the energy sources, stores, or converters can deliver electric energy. A hybrid road vehicle is one in which the propulsion energy during specified operational missions is available from two or more kinds or types of energy stores, sources, or converters, of which at least one store or converter must be on board. The second definition of hybrid road vehicle is proposed by Technical Committee 69 of Electric Road Vehicles of the International Electrotechnical Commission.

The HEV serves as a compromise for the environmental pollution problem and the limited range capability of today's purely electric vehicle. HEVs have an electric motor as well as an internal combustion engine (ICE) to provide extended range and to "curve down" the pollution problem. Vehicle design complexity increases significantly with hybrid vehicles, because controls and support systems are needed for a thermal engine and an electric machine in addition to the components needed for controlled blending of power coming from the two sources. The hybrids are looked upon by many as a short-term solution until the range limitation and infra-structure problems of purely electric vehicles are solved. Nevertheless, a number of automotive manufacturers are marketing hybrid vehicles for the general population, with many others following suit.

This chapter focuses on familiarizing the reader with the basic drivetrains of HEVs. The basic thermodynamics of some of the heat engines or ICEs are discussed prior to discussing the design issues with HEVs.

Hybrid Cars The Whole Truth Revealed

Hybrid Cars The Whole Truth Revealed

Hybrid Cars! Man! Is that a HOT topic right now! There are some good reasons why hybrids are so hot. If you’ve pulled your present car or SUV or truck up next to a gas pumpand inserted the nozzle, you know exactly what I mean! I written this book to give you some basic information on some things<br />you may have been wondering about.

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