The use of 48-volt on-Board power supply

All you need to know about the new 48 volt power supply car

Each successive generation of cars, even from the same manufacturer of cars, is becoming more and vysokotehnologichnye than models produced more recently. A considerable role is played regularly toughen environmental rules applicable to the content of the exhaust gas, which has necessitated an upgrading of the basic units and mechanisms of machines, including systems for on-Board power supply. One of the promising directions in today’s automotive industry say the shift of power on-Board electrical system with the usual 12-volt voltage 48-volt power. According to experts, when the intensity of the ongoing development of the most advanced manufacturers, by 2025 more than 20% of all produced cars will be equipped with on-Board electrical system operating under voltage four times higher than at present.

One of the leaders of automotive parts and components, designed for 48-volt voltage, is the brand Delphi, analyzing the products, you can try to understand the advantages and the popularity of the 48-volt system. Summarizing the many nuances, it is easy to identify two basic criteria: first, the car has a 48-volt onboard electrical system, is much more efficient from the point of view of requirements of environmental safety, and secondly, this innovation contributes to higher power operating in a single circuit with a 48-volt system of the power plant.

The previous decade characterized by mass change of components handling traditional arrangements to more efficient electrical equipment. So, the vast majority of automakers have abandoned the hydraulic system of power steering in favor of electromilitary. Electrician widely used in brake and fuel systems of vehicles. The generally accepted trend of the modern automobile was the use of new active safety systems, working with electronics.

In addition to the complex infotainment centers, which are equipped with even the budget car segment, among the most popular system it is worth noting such devices as: electronic assistant-the Valet, the system of monitoring of blind zones and control of an unauthorized crossing of road markings, control and keeping safe distance to the vehicle ahead, brake assist, excluding arrival on the pedestrian who suddenly appeared in front of the car. And about such options available in the basic versions of many models like heated seats, exterior mirrors and steering wheel, requiring considerable energy consumption, not even have to talk. It is obvious that the capabilities of traditional 12-volt onboard electrical system of the car is more lacking, which is especially important for vehicles in the premium class.

So, the engineers luxury brand Bentley is used to power the electrical system of the stabilizer bar on the Bentayga model 48-volt battery. Actively working on implementation of the 48-voltooi electrical systems in their cars, the engineers of Mercedes. Do not lag behind the overall trend in the Audi, gradually preparing buyers to use electronic systems of air injection, electro-turbo charged cars.

Vice-President of Delphi says that the serial use of the on-Board network voltage of 48 volts will significantly improve the reliability and efficiency of engine starting of the machine. In addition, the 48-volt system will increase the reliability of functioning of the onboard electrical machine when the engine is at lower rpm.

But despite a promising and very active promotion of 48-volt on-Board system for cars, the usual 12-volt battery powering lighting, interior electrician and other consumers, not only continues to be relevant device, but not going anywhere in the foreseeable future.

The thing is that in contrast to the developments of the mid 90-ies, when the designers of some of the companies-manufacturers seriously considered the transition from 12-volt to 42-volt system voltage, current developments suggest only addition to the usual electrical system of the new motor, paired with a 48-volt battery. Thus, we are talking about a kind of mild hybrid device. Of the existing models, which used a hybrid electric on-Board system dual voltage, as the minivan Renault scenic.

Mild hybrid systems several advantages. First and foremost, it is their low cost and compact size components. Another advantage is called the fuel efficiency of car engines with a similar power system. So, saving fuel, according to experts, can reach from 13 to 21%.

Perhaps the key element in the engine compartment of cars with hybrid systems, the power supply which has a voltage of 48 volts, is a motor-generator that converts DC 48-volt battery into the alternating current required to power the on-Board energopotreblenii devices.

It is noteworthy that a higher voltage onboard network of the car “healthier” for most agricultural machinery, including fuel pump, cooling fan or AC compressor. These devices operate more steadily and reliably in the presence of the on-Board network voltage of 48 volts. But the increase of voltage in the vehicle electrical system can increase the number of additional electrical equipment without additional load on the engine and, as a result, without causing an increase in fuel consumption. Positive impact 48-volt power source and the heating speed of the catalyst in the system of exhaust gases of vehicles equipped with diesel engines. Thus, the developers increase the level of sustainability is quite “dirty” diesel engines.