混合动力汽车英文介绍

混合动力汽车英文介绍标准化工作室编码[XX968T-XX89628-XJ668-XT689N]

Introduction of Hybrid Electric Vehicle Abstract: As the environmental pollution and energy crises are getting more and more remarkable, hybrid electric vehicles (HEVs) have taken on an accelerated pace in the world. In this paper, we will see the types of HEV, and introduce some famous HEVs in China and all around the world.

Key words: HEV, automobile, , development.

In 1997, Toyota Motor Corporation released the hybrid electric vehicle（HEV） in the world, which was named "Prius".

Firstly, what is a hybrid electric vehicle? Broadly speaking, a hybrid electric vehicle has two power sources at least, no matter , nuclear energy, solar energy or electric energy and so on, but in real life, most hybrid cars use the traditional internal combustion engine and electric motor as a power source.

Why hybrid electric vehicle feel valued by many countries recent years? As we know that, oil is not in resources,a lot of information indicate that if mining speed remain at current level, proved oil reserves could merely use fifty to sixty years, so, energy supply becomes a tough question. And also by the reason of more and more serious environmental pollution, hybrid electric vehicles have to be pushed onto the stage of history.

And what is the advantage of hybrid electric vehicles when compared to (BEV) or conventional vehicles? The characteristic of the electric motor is, when compared to internal combustion engine, more quiet, and cleaner, in the same time, speed-torque control features is more flexible. When at low , electric motor has a constant torque, when at high , it has a constant power. Hybrid electric vehicles combine with traditional internal combustion engine drive, give full play to the advantages of both. Meanwhile, it can effect a permanent cure to the problem of (BEV)'s weak dynamic performance and short cruising distance. In summary, as a appropriate transitional product, hybrid electric vehicle is a good choice in this time that energy crises are getting more and more remarkable and the development of is still in a primary.

Compare to conventional vehicle, HEV can save fuel for the following reasons.

(1)HEV can store part of the vehicle’s kinetic energy in battery while braking or downslope in which otherwise is burnt in the brake drums in the form of heat in conventional vehicle.

(2)The ICE in an HEV can be designed with a smaller displacement without compromising the performance of vehicle.[1]

(3)HEV can make ICE operate at maximum efficiency point or optimal operating line by regulating the output power of battery to satisfy the required power of vehicle.