Careful friends may find that when browsing the power parameters, in addition to the engine displacement, there will be an additional 48V micro-mix word in the back. At this time, some friends wondered, what is the role of this 48V hybrid system for the car?
The 48V micromix system is a product derived from the original 12V battery, and its main role is to reduce fuel consumption and reduce emissions, which can be summarized to cope with increasingly stringent emission policies. The structure of this system is also not complicated, and it is composed of a BSG motor or ANG motor + A8V battery + DC transformer.
So what are the advantages of this micro-hybrid power installed on the car? The first is reflected in the vehicle appliances, because the battery capacity and voltage have become larger, so some "power consumers" on the car do not need to be driven by the engine. For example, idling on the air conditioner will increase fuel consumption, after all, the engine load is greater, but after the 48V micromix is added, the engine is not needed to stop the air conditioner, all provided by the 48V micromix, which has a certain help for fuel consumption.
Secondly, the addition of the motor can greatly alleviate the engine start-stop vibration, and at the same time provide power when the vehicle starts, so that the response of the vehicle is more rapid. When the vehicle is in a taxiing state, the engine speed will return to zero, reducing fuel consumption, and when the acceleration pedal is re-pressed, the engine can be quickly started through the motor, so that it is seamless.
In this way, the benefits of the 48V micromix system are still many, and now the frequency of appearing on new cars is getting higher and higher. But consumers don't seem to like the new technology too much, what is the reason?
First of all, the failure rate, this point is believed that the owner of Mercedes-Benz C260L has a deep experience, the car quality network has a number of cases of failure about the Mercedes-Benz C-class 48V micromix system, the main phenomenon is the instrument fault code, the vehicle can not accelerate normally, the vehicle appears significantly shaken and so on. And this fault seems to be a common disease, which cannot be completely cured, that is to say, whether it is good or not depends entirely on luck.
The second is that the 48V micromix of the motor started with BSG is more like a transitional product, and the so-called BSG is to use the engine belt to drive the motor, replacing the position of the original generator. The advantage is that the cost is low, and it can be directly arranged in the original cabin, saving time and effort, and can also achieve the purpose of energy saving and emission reduction.
Recently, there have been 48V micromix systems for ISG integrated motors, which, unlike the BSG belt connection, is directly fixed between the engine and the gearbox, which is what we call the crankshaft position. The advantage of this is that the torque of the engine and the motor can be output at the same time, and the system can automatically match the power output of the two through different throttle openings, ensuring strong performance and reducing fuel consumption. For example, the latest generation of the C class is to change the 48V from BSG to ISG, and the power parameter is upgraded from the original 184 horses to 204 horses.
In fact, 48V is not a high-level thing, its structure is also very simple, but the manufacturer is over-publicized, so that consumers think that they can be compared with the Honda i-MMD, Toyota THS hybrid. In fact, 48V is essentially a supplement to the original 12V electrical system. Although there is an improvement in driving and fuel consumption, the perception is not strong, and it belongs to the setting of "there is not much of it, there is not much of it", so consumers are not interested in this configuration.