摘要:混合动力汽车就是结合了传统的内燃机和电力供给系统。由此，混合动力汽车 具有了更好的燃油经济性和驾驭性能。目前，有很多种类混合动力汽车的存在，并 且很多方面的功能可以和电动汽车相媲美。对于混合动力汽车来说，混合电动汽车 就是一种最普遍的存在形式，同时，混合电动卡车也是存在的。

　　　现代混合动力汽车应用了很多最新的科技成果，比如说再生制动，应用这种技 术，便可以将制动时候的动能转化为电能，储存在电池中，这样，便不会将制动能 量白白地用热能消耗掉了。在一些混合动力汽车中，会通过发电机来产生电能（电 动发电机），一方面用于对电池充电，另一方面直接用于驱动发动机。很多混合动 力汽车通过关闭发动机来减少不必要的能量消耗，而在需要的时候又重新启动发动 机，这就是停启系统。相比于普通汽油车，因为混合动力汽车的发动机体积更小， 所以得到更好的热功率，并且如果不直接应用于驱动汽车的话，会产生更大的功率， 具有更好的燃油经济性。

　　　本文简单介绍了混合动力汽车的发展与现状，着重分析了仿真技术在混合动力 汽车上的应用。作为一个比较成熟的技术，仿真技术现在已经广泛地运用到混合动 力汽车的研发阶段上，它为减少研发的时间和金钱作出了巨大的贡献。文章中，我 们将分析仿真技术是怎样来解决混合动力汽车转向稳定性的问题。

关键词：混合动力汽车，发动机，电池，仿真技术

Abstract:A hybrid  electric  vehicle  (HEV)  combines  a  conventional  internal  combustion engine (ICE) propulsion system with an electric propulsion system. The presence of the electric powertrain is intended to achieve either better fuel economy than a conventional vehicle, or better performance. A variety of types of HEV exist, and the degree to which they function as EVs varies as well. The most common form of HEV is the hybrid electric car, although hybrid electric trucks (pickups and tractors) also exist.

　　　Modern HEVs make use of efficiency-improving technologies such as regenerative braking, which converts the vehicle's kinetic energy into battery-replenishing electric energy, rather than wasting it as heat energy as conventional brakes do. Some varieties of HEVs  use  their  internal  combustion  engine  to  generate  electricity  by  spinning  an electrical generator (this combination is known as a motor-generator), to either recharge their batteries or to directly power the electric drive motors. Many HEVs reduce idle emissions by shutting down the ICE at idle and restarting it when needed; this is known as a start-stop system. A hybrid-electric produces less emissions from its ICE than a comparably-sized gasoline car, as an HEV's gasoline engine is usually smaller than a pure fossil-fuel vehicle, and if not used to directly drive the car, can be geared to run at maximum efficiency, further improving fuel economy.This thesis has reviewed both of the history and research trends of HEV and explain how does the Simulation technology used in HEV. As a ripe technology, Simulation technology have been used widely on HEV in early days, and it does make a contribution to reduce the money and time. In this part, you will see how does the Simulation technology used to solve the problem of the HEV’s deversion stability.

Keyword：hybrid electric vehicle，engine，battery