It is well known that hybridization technology is a must-have to jump in the automotive industry. Among them, Toyota, Honda Japanese companies have a near-ruling status in this field due to advanced technology. Not long ago, Great Wall car officially announced the lemon mixed DHT system. From the perspective of technology, it undoubtedly break the mixed pattern of the two field rules. Master Bao was invited to experience the Great Wall Lemon Mixed DHT system, and wrote the principle of this system (for details, see the previous article “goal is to dry the Toyota Honda Great Wall Motor release lemon mixed DHT technology”).
However, it can only be interpreted from the perspective of theory and experience, and it will be interpreted on the side of the interlaced. Only the engine + DHT is always removed. The opening can understand a detailed. It happened that the Great Wall has really come back to the thorough dismantling of “Southern sincerity”, and the Bao master also found the Great Wall relative to the “two fields” from this dismantling.
Yumming: The use of combustion efficiency is further
The essence of hybrid power is the maximum utilization of engine combustion efficiency. For example, Toyota has started using the planet gear to combine the motivation of the motor with the engine. Based on the brakes, the slip energy is battery charging, and the energy efficiency of the electrical energy supplement engine is insufficient.
Honda’s high, in the basis of Toyota, made a more detailed segmentation of the combustion efficiency section of the engine. For example, most of the high-efficiency intervals of the engine are in the process of traveling speed, so only this time, let the engine participate in direct driving wheels, the rest, just keep the engine to perform high performance intervals, so that the motor is driven The vehicle is just fine.
The Great Wall Lemon Mixed DHT is on the basis of Honda, further subdivision of the economic combustion range of the engine. . For example, in the process of acceleration, and high-speed operation, the engine will pass out of the high-performance range, the Great Wall is in the Great Wall with the two gear reducerWith, the operation of the engine is further restored in the high performance range, which has undoubtedly makes the engine’s energy efficiency utilization force, and naturally saving oil.
Mingzi 2: Further
The principles mentioned above may be better understood, but the seemingly simple principle can really land, is the most important Kung Fu. This dismantling, the highlight is here, it is possible to see which Kung Fu is on the landing level.
First is the arrangement of the motor. The Great Wall is on the basis of a series of string of Honda, and its own system developed, and also references the structure of the dual motor. However, it is more wisdom that the lading of the Great Wall is even better than Honda’s engine + generator + drive motor. Honda’s program undoubtedly increases the horizontal width of the entire assembly, so that the engine compartment must be wide enough. For small cars, this field has to further put two motors “thin”, which has no shortcomings. Cost.
The Great Wall uses a parallel axis layout, so that the two motors are connected to the gear, not only in the lateral dimensions, but also Easy to the structural layout of the overall module. In this compact DHT module, complex mechanisms such as two gear reducers, single clutches, fork shift mechanisms, and dual motors are included. The volume is 50% higher than the ordinary DCT (dual-clutch gearbox). It is important to know more than the industry’s consensus. Why is the Great Wall Lemon DHT so light?
First, this system uses a single integrated design, which is lower than the double clutch, and the lubrication is lower, and the structure is very small. In addition, the shifting mechanism also uses the fork type design, simple structure, high reliability. Combined with a fixed gear drive, there is a good performance in volume, reliability, and cost control.
Secondly, the dual motor of this system uses high magnetic resistance torque design concept, more ordinary permanent magnet motor.Design is reduced by 20% or more magnetic steel, reaching lightweight purposes; hair card design, tank full rate up to 70% or more, effectively improve motor power density; short winding arrangement, optimize air gap harmous wave, reduce all phases Electromagnetic force, improve 48 and 96th-order high frequency noise, NVH performance industry is first-class; low loss 0.27mm silicon steel sheet, iron loss is 1% higher than that of the double 85 percentage of high-efficiency zones. Moreover, the two motors use the same diameter, in the production level of the product, modular processing can be used, further reduced the cost.
Gao Ming 3: The refinement of control logic
In this dismantling, the BAO master is most surprised, it is this DHT control unit, which is equivalent to lemon mixed DHT ” Central brain. Let the Bao master are the first thing to accidentally, distinguish between the traditional volume of controllers, the control unit of lemon mixed DHT is very light, as if a small PAD size can be directly arranged in the top of the DHT, usually a control unit Size, you can see that the main plant is integrated with electronic components, which can be seen in this volume. 
The second surprises are: the volume is small, but the force is very outstanding. Lemon mixed DHT is equipped with the English Flying TC38 series processor chip, which is not only strong, reliable, with the control algorithm of the Great Wall Autonomous R & D, can cope with at least six working conditions, they are:
1, pure electric travel: only by the TM motor through the two-stage gear set to drive wheels 
2, 0-35km / h series mode: engine + GM motor provides electrical energy, TM motor drive wheel
3, 35-65km / h: The engine drives the wheel through a large speed than the gear set, the TM motor dynamic adjustment torque
4, 65km / h or more: the engine switches to a more economical speed ratio direct drive Wheel
5, full-load driving: three power units all output power
6, deceleration and downhill: clutch disconnection, through TM motor recovery kinetic energy
Although theory Can be divided into six typesMode, but the actual working condition is very complicated. For example, the opening of the throttle is very likely that the engine is intervened in direct drive; in the case of sufficient electricity, it is possible to achieve pure electric travel. For specific experience, relative to the two fields, the Great Wall mode switch is very smooth and quiet, you can’t find a frustration like Toyota, and you will not be like Honda when you are in an accelerated and medium-speed cruise. This kind of smoothness is quiet, and behind the Great Wall Communication Team is meticulous. According to the official data, the urban working conditions of this system are less than 35% of the conventional model fuel consumption. The medium and high-speed working conditions are more fuel consumption by 10% -15 percentage, high-speed large load conditions are more than 18%. -25 percentage.
Write in the last:
This dismantling, BAO master visually saw the Great Wall Lemon Mixed DHT System, especially in the core principle, systematic The intentions of volume, structure, cost control, etc. have no quality of overseas brands, even in some areas.
Let Bao master feel that the launch of lemon mixed DHT is a symbol, which proves Chinese companies, even if they don’t use it. The so-called “corner overtaking” route, the foot-on-ground land is developed, in the field of traditional internal combustion engine, can also go to the front of overseas brands. So focus on technology, one step by one footprint is the fundamental of automobile companies to strong. Recently, Wey brand new car Macchiato with lemon mixed DHT system is about to appear, and this product can also achieve transcendence of overseas brands in the sales level.