Saturday, January 15, 2011

42V electrical system for cars

Electrical systems on cars today plays a very important because equipment with more and more and are operated by electricity. According to the general trend, the future people will use 42V power source instead of the 12V batteries common.
The equipment, from simple heating seat to modern digital sound system, satellite equipment guide ... will gradually become standard equipment for any car which, thanks to the electronics increasingly lower prices. They all have one thing in common are electrically operated. Most cars today are fitted with batteries and charger 12V 14V (charging voltage should be higher than the battery).
Back to the 1950s and much earlier, a car is equipped with battery charger voltage of 6V and 7V. Of course, these old cars do not need more power than the ignition or a few light bulbs. Mid-50th century, the shift to 12V systems help bring manufacturers can use smaller wires and also involves generating more electricity facilities for cars. And when converting to use 42V electrical system, we will also gain the same benefits.
In fact, only in the charging voltage is 42V operation, while power generators have voltage 36V. If the voltage at 50V or more, you can touch the human heart stopped beating. 42V electrical system does not affect weight. With greater voltage, will need a thicker layer of insulation, but with 12V current, wire size should be large. Operate the equipment on the car in winter with a 14V charger to the electric current intensity of about 300A. 12V 300A intensity will give a capacity equivalent to 4.200W. Thus, to generate power equivalent to a voltage 42V, electric current just 100A. Wire which led to problems on the car is only the size of 1 / 3. Motor (hybrid) of the Toyota Prius. Motor (hybrid) of the Toyota Prius.

Besides, maybe even more advantages, such as starter and generator can be combined into a single department. Currently, hybrid vehicles (vehicles equipped with both electric motors and gasoline engines) are using this technology. It helps to start the engine in just over 1 / 5 seconds. The engine automatically switches off when the car stopped and returned to active status as soon as the driver hit the accelerator pedal. Thereby, gas engines also reduce fuel was not wasted.
There are many devices require voltage 42V. Examples of electronic braking systems, the electric heaters, ... The needs of customers for convenience, safety and high performance will drive change faster than this. However, it also created some problems. Greatest inconvenience to the vehicle owner is not cheap to upgrade the electrical systems on 12V to 42V. If to these two systems simultaneously, for different devices, such as back trouble should arise to two different chargers. The voltage change means items such as bulbs, fuses, switches and relays will need to be specially designed. With automotive engineers, one of the biggest challenges is how to eliminate electrical sparks when turned on, switch off (with 12V systems, the spark itself off).
These difficulties will pass. 42V electrical systems will dominate in the future. People will still drive cars as before, only with more advanced facilities and more on the car more power.

1 nhận xét:

Sam Smith said...

Buying cars made with Marshall Engines was the best decision i ever made.

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