Chapter 3129

The technology industry specializes in starting vehicles by means of a starter. The starter is a simple and rough motor, which works almost in the way of short circuit. The current at the time of starting is hundreds of amperes. It drives the engine with strong power to complete the starting action. It can only work for a short time and will burn down after a long time.

What about the generator? The task is to generate electricity efficiently. Generally speaking, it uses the way of alternator, and then obtains DC through rectification. These are two different structures.

Qin Guan said to integrate this?

He ribala still has some doubts. As the most professional technician, Sandra has thought of the key. If it is a 12 volt system, it is really impossible, because an efficient generator must only be an alternator. However, if it is raised to 48 volts, it can directly adopt the way of DC generator.

As long as you have junior high school physics knowledge, you know that the so-called generators and motors have the same structure in the field of DC.

At the same time, due to the expansion to 48 volts, there is no need for a special starter when starting the car. In turn, it is enough to use the generator as a motor.

Although the 48 volt all-in-one machine is larger, on the whole, it should be smaller than the volume and weight of special generators and motors.

"The power of this all-in-one power generator should be about 10 kW. At the same time, it should also be equipped with a set of lithium-ion battery pack with energy storage of about 1 kwh." Qin Guan said: "such a power system can not directly drive the vehicle, but it can provide more power when the vehicle starts."

The key to fuel saving lies here. Only when the voltage is increased to 48 volts can the start-up and power generation be integrated, the work is more stable, and the efficiency of start-up and power generation is higher. At the same time, because the power is greater, this system can assist the engine to drive the car, When the engine works in the low speed range with poor economy, the load of the engine can be reduced, so as to achieve the purpose of fuel saving.

At the same time, under normal cruise conditions, this generator / starter can be used to maintain the speed. After all, at this time, the engine only needs to overcome the resistance, so that the engine can reduce the fuel injection.

When the car needs to slow down, the starter / generator can also recover the kinetic energy during deceleration and store it in the battery for use.

In other words, with this all-in-one machine, the energy conversion in the operation process is optimized perfectly. Some are similar to pure trams, but they are very different from pure trams. It is called light hybrid system, because only relying on its own power can not make the car move directly, but this greatly reduces the weight of generators and batteries, otherwise, When driving on the highway, you always have to carry heavy batteries.

If it is a 12 volt vehicle, only the automatic start and stop technology can stop the engine and save fuel during a short parking period. This 48 volt light hybrid system promotes the vehicle together with the engine through various more efficient cooperation, reduces the engine load, and makes the engine most likely to run in an economic range, so as to achieve the effect of fuel saving.

"In this way, the problem of air conditioning is also solved. When parking and flameout, the system can also drive the air conditioning compressor, that is, the air conditioning compressor of this car is enough to use the 48 volt electric air conditioning compressor." Qin Guan explained the idea of the light mixing system: "Generally speaking, this system includes a start-up generator, a 48 volt lithium-ion battery with a capacity of 1 kwh, driving air-conditioning compressor, electric water pump, electric turbocharger, etc. as for other parts of the car, the voltage can be converted to 12 volts through the electronic system and continue to be used."

In this way, it can also reduce the pressure of supporting manufacturers. Although DC and DC voltage conversion is not easy, there are also suitable modules to use. It is appropriate to abandon these large power users and use 12 volts for the rest.

Sandra's dilemma is that the whole car is powered by 48 volt system, but Qin Guan has put forward a more perfect solution. Now Sandra is nodding.

"We need about two or three years to develop this system. When we launch the market, we should step up the registration of relevant patents, because there will be a lot of people following suit, especially those luxury cars," Qin said.

In that parallel time and space, Mercedes Benz was the first to launch this light hybrid system. It has launched several models one after another, which has become their technical mark. Now, of course, we can't let other manufacturers take advantage of it. We have developed it and registered a patent. If other manufacturers want to use it, we can buy a patent from ourselves.

In fact, luxury car owners don't care about fuel consumption, but this is a selling point and sign, indicating that their technical level is very high.

After Qin Guan introduced these, he RI Bala also brightened his eyes: "yes, we need to speed up R & D. after R & D, we will first use it on our high-end models, and then gradually become standard."

Qin Guan nodded. Driven by his own side, if the fuel consumption is reduced to 4 liters per 100 kilometers, it is estimated that many manufacturers will feel desperate. This is a height they can't reach. What about islanders? Still rely on their weight and wheels to save fuel?

The technical route is very important, and Qin Guan, even if he does not rely on his own system, but only on the insight from that parallel time and space, can let his own enterprises take the lead.

There is more than one engine. After reading this one and moving on, Sandra then began to introduce: "this is a 3.0T engine. We use two large and small exhaust gas turbochargers on this engine."

Dual turbocharging can be a mixture of electric turbocharging and exhaust gas turbocharging, or dual exhaust gas turbocharging. The difference is the size of displacement. In terms of small displacement, it is not appropriate to have another exhaust gas turbocharging, and the large displacement is different.

The reduction of automobile displacement is a trend. After all, small displacement can save fuel. This is an absolute truth. Although it has been criticized by many people, it still can not change the outcome. Six cylinders become four cylinders. The large displacement engine only meets the needs of special local tyrants.

"This engine is used in our high-end models. At the same time, it is also intended to be used in our latest red flag s series." Sandra said: "Mr. Qin, since you have come to investigate, we will report our new car series to you. This is a sports car in our plan."