Popis: |
Conventional hybrids that use a combination of an internal combustion engine (ICE), an electric motor, and a battery aim at avoiding inefficient operation of the IEC and thereby reducing fuel consumption. There is no clear-cut definition of hybrids but they can be classified based either on the structure of the drivetrain (parallel or series hybrid) or on the size of the electric part of the drivetrain (micro-, mild- and full hybrid). The requirements for components depend very much on the degree of hybridization as well as on the structure of the drivetrain, and so important components as well as their typical characteristics are discussed in this article. Different degrees of hybridization mean different saving potentials and also different additional cost in comparison to a purely conventional drivetrain. Some figures are given for this saving potential, and an overview of the state of the art in available vehicles is included, extending to light-duty trucks and buses. |