Chapter 3129: Light mixing system
The technical industry specializes in starting vehicles. It relies on a starter. This starter is a simple and rude electric motor that works almost in a short-circuit mode. The current is several hundred amperes when starting, and the engine is driven by strong power. , It can only work for a short time after completing the start-up action, and it will burn down after a long time.
Where's the generator? The task undertaken is to generate electricity efficiently. Generally speaking, the AC generator is used, and then the direct current is obtained through rectification. These are completely two different structures.
Qin Guan said he wanted to integrate this together?
Heribala still has some doubts, but as the most professional technician, Sandra has already thought of the key point. If it is a 12-volt system, this is indeed impossible, because of the efficient generator , It can only be an AC generator, but if it is increased to 48 volts, then a DC generator can be used directly.
As long as you have knowledge of junior high school physics, you know that the so-called generators and electric motors have the same structure in the field of direct current.
At the same time, due to the expansion to 48 volts, when starting the car, there is no need for a special starter. This generator, in turn, is sufficient for use as a motor.
Although this 48-volt all-in-one machine is a bit larger, it should be smaller in volume and weight than a dedicated generator and electric motor.
"This all-in-one starter generator must have a power of about 10 kilowatts. At the same time, it must be equipped with a set of lithium-ion battery packs with an energy storage of about 1 kilowatt hour." Qin Guan said: "Such a power system cannot be directly driven The vehicle, however, can provide more power when the vehicle is started."
The key to fuel saving lies in this. Because it is increased to 48 volts, it is possible to integrate start-up and power generation. The work is more stable and the efficiency of start-up and power generation is higher. At the same time, because of the greater power, this system can assist the engine Promote the car, so that when the engine is working in a low-speed range with poor economy, the load of the engine can be reduced, so as to achieve the goal of fuel saving.
At the same time, under normal cruising conditions, this generator/starter can be used to maintain vehicle speed. After all, the engine only needs to overcome resistance at this time, so that the engine can reduce fuel injection.
When the car needs to decelerate, this starter/generator can also recover the kinetic energy during deceleration and store it in the battery for use.
In other words, relying on this all-in-one machine, the energy conversion during operation is perfectly optimized. Some are similar to pure electric vehicles, but they are very different from pure electric vehicles. It is called a light hybrid system because it only relies on The car cannot be moved directly with its own power, but this greatly reduces the weight of the generator and battery, otherwise, when driving on the highway, you will always have to carry a heavy battery.
If it is a 12-volt vehicle, there is only automatic start-stop technology, which can be turned off during a short period of parking to save fuel. This 48-volt light hybrid power system uses a variety of more efficient cooperation to propel the vehicle together with the engine to reduce the load on the engine , So that the engine is most likely to run in the economic interval, so as to achieve the effect of fuel saving.
"In this way, the air-conditioning problem is also solved. This system can also drive the air-conditioning compressor when the vehicle is turned off. In other words, the air-conditioning compressor of this kind of car is enough to use a 48-volt electric air-conditioning compressor. "Qin Guan explained the idea of this light mixing system: "In general, this system includes a start-up generator, a 48-volt lithium-ion battery with a capacity of 1 kWh, which drives air-conditioning compressors, electric water pumps, Electric turbochargers, 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, the pressure on the supporting manufacturers can also be reduced. Although the DC and DC voltage conversion is not easy, there are also suitable modules that can be used. Abandoning these large electricity users, the remaining 12 volts is appropriate.
Sandra and the others are embarrassed because the whole car is powered by a 48-volt system, but Qin Guan has proposed a more perfect solution. Now, Sandra nodded repeatedly.
"We need about two or three years of research and development time for this system. After we launch it on the market, we must step up to register related patents, because there will be a lot of follow-ups, especially those luxury cars." Qin Guan said.
In that parallel time and space, Mercedes-Benz was the first to launch this kind of light-hybrid system. It launched several models one after another, which became their technical symbol. Now, of course, other manufacturers cannot take advantage of it. They have developed it and registered patents. If you want to use it, you can buy the patent from your own.
The owner of a luxury car actually doesn't care about fuel consumption, but this is a selling point and a sign that shows that his own technical level is very high.
After Qin Guan introduced these, what Heribala heard was also bright before his eyes: "Yes, we want to accelerate research and development. After research and development, it will be used in our high-end models first, and then gradually become standard equipment."
Qin nodded his opinion. After his own promotion, 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 that is difficult for them to achieve. What about the islanders? Are they still relying 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, only relying on the insights from that parallel time and space, he can still allow his own company to seize the opportunity.
There is more than one engine. After reading this, Sandra then started to introduce: "This is a 3.0T engine. On this engine, we use two large and small exhaust gas turbochargers. Depressor."
Dual supercharging can be a mixture of electric supercharging and exhaust gas turbocharging, or dual exhaust gas turbocharging. The difference is the size of the displacement. For small displacements, another exhaust gas turbocharging is not appropriate, but large exhaust The amount is different.
The reduction of automobile displacement is already a trend. After all, only a small displacement can save fuel. This is an absolute truth. Although it has been criticized by many people, it still cannot change the ending. The six-cylinder becomes the four-cylinder. 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 going to be used in our latest Hongqi S series." Sandra said: "Mr Qin, since you came to inspect, then we will report to you. Let’s take a look at our new car series, which is a sports car in our plan."
