When it comes to cars in the electric era, it must be an unavoidable topic to get mixed up.
In the past, the emergence of interruption was to meet the needs of two major markets: one is to reduce energy consumption.
the other is to ensure the adaptability of multi-road conditions, but high prices and expensive maintenance are prohibitive factors.
In the new era, plug-in also ushered in a new opportunity, Great Wall Motor seized the opportunity to launch a smarter and more efficient electric drive system Hi4, to maximize the advantages of hybrid.
How exactly did you do it? Poke the video below to reveal the answer.
Click to watch the video: all-wheel drive can also be smart? Do you know the gold content of the Great Wall Hi4? as the name implies, H (Hybrid) stands for hybrid, I (Intelligent) for intelligence, 4 (4WD) for all-wheel drive system, Hi4 is a new intelligent four-wheel drive electric hybrid technology composed of engine and front and rear double motors, mainly for urban travel and family cars, focusing on both efficiency and performance.
In addition to Hi4, the system also launched Hi4-T, which specializes in the relatively niche extreme off-road market.
Most of the traditional hybrid models put the engine and two motors on the front axle, one for power generation and the other for driving, and the structure is relatively simple.
Most Japanese brands on the market and most of their domestic counterparts adopt this architecture, but Hi4 is different.
Take Haver owl dragon MAX as an example, Hi4 intelligent hybrid four-wheel drive, in addition to the internal combustion engine, but also through the distribution of front and rear double motors to achieve four-wheel drive.
In addition to the development motor, the front axle also has a motor that can both generate and drive, and the other motor is moved to the rear axle.
This can not only reserve more heat dissipation space for the engine room, but also optimize fuel consumption at high speed.
Hi4 intelligent electric mixer realizes dual-motor multi-speed series-parallel four-wheel drive through the distribution of front and rear motors, which makes Harvard Owl Dragon MAX become the first car in China to realize four-wheel drive by technical means.
When accelerating or climbing, the centroid of the Haver owl dragon MAX will shift backward, so that the rear wheel adhesion becomes larger, and the advantages of large torque and fast response of the motor can be brought into full play.
Even on icy and slippery roads, they can cope well, while ordinary two-wheel drive models on the market are very difficult to cope with this situation.
In the high-speed overtaking scene, the Haverondron MAX can be directly driven by the engine in the parallel four-wheel drive mode, which is more efficient than the extended range, and the motor can also assist the engine to improve the engine condition in the case of rapid acceleration.
No matter what kind of driving demand and environment, you can choose the appropriate driving mode to achieve the best driving experience and energy consumption performance.
In addition, the front and rear axle distribution can make the front and rear axle load distribution more uniform, coupled with the iTVC intelligent torque vector control system to transmit road information every 10 milliseconds, can quickly reduce the slip rate through torque distribution and improve the passability of the vehicle.
ITVC is an intelligent torque vector control system specially built by Great Wall for Hi4 sequence, which can analyze the power demand of drivers and control the distribution of all-wheel drive torque according to the information of speed, driving mode, road ramp, steering wheel angle, motor speed and yaw speed, and integrate the road condition information such as camera and radar to control the distribution of all-wheel drive torque and improve the vehicle’s stability, comfort, safety and acceleration performance.
In addition to the front and rear distribution of dual motors, Hi4 can further improve the economy, power and ride comfort of the power system through intelligent energy management and multi-block design of electromechanical coupling devices, and improve the adaptability of complex road conditions.
In addition, the Hi4 system also has a 2-gear DHT hybrid gearbox, which can better adjust the efficient working range of the motor and engine, taking into account both performance and economy, compared with the DM-i single-gear hybrid.
If the single gear-extended range vehicle can only achieve single motor output and the motor working point can not be adjusted, it will not be able to achieve full efficiency.
In the scenario of rapid acceleration or climbing, the difference between Hi4 and other hybrid technologies is very obvious.
At the beginning of the design, the engineers of Hi4 considered the two-axis distribution of two motors, and the free control of the torque between the axles can be realized through the adjustment of the two motors.
As the load ratio of the front and rear axles is closer to 50:50, it also improves the handling performance and driving fun, and can cope with all kinds of road conditions.
According to the road research in recent years, the situation of my crossing is relatively complex, and plug-in mixing will be more and more popular in the future.
Great Wall Hi4 intelligent four-wheel drive hybrid technology shows unique advantages in energy management, intelligence, handling, driving mode selection and engine performance.
It is believed that more brands will adopt hybrid architecture similar to Hi4 in the future.
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