Advantages of cars

Solo disponible en BuenasTareas
  • Páginas : 6 (1489 palabras )
  • Descarga(s) : 0
  • Publicado : 10 de marzo de 2011
Leer documento completo
Vista previa del texto
Joel Humberto Velarde Hernández

Barbara Ahlquist

Advantages of cars

Mec 8-2

February 28, 2011

A hybrid vehicle is an alternatively powered vehicle that combinesa motor driven by electricity from batteries and an internal combustion engine. Globally in 2009 and circulated more than 2.5 million hybrid electric vehicles lighter, led by theUnited States with 1.6 million, followed by Japan (over 640 thousand) and Europe (over 235 thousand). Aglobal hybridmodels manufactured by Toyota Motor Corporationsurpassed the historic milestone of 2 million vehicles sold in August 2009, which is followed by Honda Motor Co., Ltd. withmore than 300,000 hybrids sold until January 2009 and Ford MotorCorporation, with over 122 thousand hybrids sold untillate 2009.

MG1 charging the high voltage battery starts to heat engine MT
MG2 is carried by the vehicle at all times, either alone orcooperate with MT, and acts as generator during braking. Their food is alternating phase. Transmits its torque to the crown of the epicyclic train, which is integral with the sprocket chain

Types of powertrains

The Toyota Prius Hybrid SynergyDrive is a parallel hybrid vehicle.

The Chevrolet Volt is a plug-in hybrid vehicle system in series.
There are many hybrid systems, among which three stand out: the parallel system, the combined system and the system sequence or series.
* In the parallel system, the heat engine is the main source of energy and the electric motor acts giving more power to the system. The electric motordelivers its power output and acceleration, when the heat engine consumes more fuel. This system is characterized by its simplicity, which opens the door to the possibility of implementing it in models of existing vehicles, without specific designs, and facilitates the comparison of its cost to a conventional vehicle. This is the system used by the Honda Insight .
* In the combined system morecomplex, the electric motor operates alone at low speeds, while at high speed, heat and electric motor work together. The engine combines the functions of the vehicle propulsion and power generator that provides power to the electric motor, which reduces the efficiency of the system. The Toyota Prius uses this system.
* In the series system, the vehicle is driven only by the electric motor thatdraws power from agenerator powered by the engine. The Opel Ampera is expected to reach mass production in 2011, based on the Chevrolet Volt , is a series hybrid.
There are also so-called plug-in hybrids , also known by its initials in English PHEVs, which use mainly the electric motor can be recharged by plugging it into the mains.
Each of these systems has its pros and cons, but they all have animportant positive component, since they indicate a serious effort in research and development of more efficient propulsion systems and clean by some brands of the automotive sector.
They can also be classified as:
* Regular, using the electric motor as a backup.
* Plug (also known by its initials in English PHEVs), which mainly used the electric motor and can be recharged by plugging itinto the mains.
Although the technology for manufacturing a hybrid vehicle is obvious: an internal combustion generator recharges the batteries when the onboard computer detects that these are exhausted. Even the generator needs to move the wheels, the high torque electric motors moving the wheels avoids even the use of a transmission and clutch.
As the largest consumer of vehiclesin the city is given, hybrid engines are a significant energy savings, while an internal combustion engine needs to increase its speed to increase its torque, the electric motor on the other hand has a pair (engine power) constant ie produce the same acceleration at the start of the march that the vehicle is in motion.
Another factor that severely penalizes performance in urban routes is the way...
tracking img