In short ago, the Qi Rui Peng Power architecture was analyzed. Since the architecture covers a very wide range, it covers fuel, mixed, pure electric or even hydrogen So only the 2.0T gasoline engine was parsed at the time. Today, the second bomb of this dynamic architecture is caused, that is, a special transmission of Chery DHT hybrid power.
The gearbox is one of the three major parts of the fuel machine, and in the current electrical background, the gearbox no longer has a high concern. In the hybrid phase, some brands are directly set with the gearbox structure of the fuel truck era, take quot; heavy oil light electric quot; structure. There is also like Toyota THS, Honda I-MMD system, which is specifically designed for hybrid design. Chery DHT Hybrid Special Gearbox, then what kind of technical performance does it bring?
Chery’s dual-core certain than a single core?
First, Chery DHT is the largest feature of dual motors, which belongs to a very small number of current worlds. Taking Honda I-MMD as an example, the system is also a dual motor, but is not a dual motor drive, but a drive motor with a combination of a generator motor. Dual motors (non-doubly driven) are also the current mainstream practices in the DHT system. In the case where a motor is responsible for driving, another motor focuses on kinetic energy recovery, and the extension power generation is functional.
The advantage of a driving motor, naturally the hardware structure is simpler, the occupied space is smaller, the control logic on the software is also more concise. Still in this field I-MMD, in the two motors, it is obvious that the drive motor is larger. However, the disadvantage of this structure is that the efficiency is relatively low. At present, in a pure electric environment, due to the characteristics of the motor and the advantage of the electricity price, the efficiency is not so sensitive to the fuel car environment. However, for the DHT hybrid model, no matter what structure, in quot; feed quot; state, it is still important to use oil to power generation, so efficiency is still very important.
Chery DHT is to carry out the two power relatively small drive motors, with Chery-raised FIO fixed-point injection oil-cooled motor technology, TEM dual motor power distribution technology to replace the effect of a single high power drive motor. This is similar to the single core processor with dual-core processors, maybe they are close to the maximum processing power, but multi-core can optimize the energy consumption of more scenarios and achieve higher efficiency. In addition, the power relatively low, and the pressure of the supply chain is relatively small, which facilitates the reduction of the imported parts, control costs.
Honda spell output, Chery does high efficiency 
The gearbox is of course not just responsible for power output, and there is a quot; Important work in it. Under the DHT structure, E-CVT is our relatively common quot; variable speed quot; form. Although it is called CVT, there is not much relationship with the fuel-fuel-free gearbox structure. For example, the E-CVT structure of Honda I-MMD is actually consisting of a speed reduction and a differential, directly built into the drive motor. So, in essence, Honda I-MMD drive system is under most working conditions, still relying on the electric quot; high brush quot; to achieve power promotion.
Chery DHT brings up to 11 combination gear, which has the trial of the two-motor, because Chery is Three gear combinations are designed on the motor, plus two motors can also operate simultaneously, in simple power mode, in theory, 9 output modes can be provided. On the other hand, Chery also provides three gear for the engine power output of the hybrid system.
Hybrid power can avoid disadvantages of the conventional fuel engine in the output and energy consumption in the medium and low speed usage environment. However, the engine is therefore easy to become the attachment of the motor, providing functions similar to the increased range electric vehicle. This obviously ignores the advantages of fuel engines in the high-speed use environment. Therefore, Honda, Chery and other hybrid systems have designed engine direct drive mode to allow enginePlay quot under hybrid structure; high-speed QUOT ;.
According to this metaphor, the engine direct drive mode under the field I-MMD structure is the quot in our traditional manual gear era; 6 Block quot ;. Because this power output is no gear adjustment, it can only be used separately to do high-speed cruise. According to relevant data, Honda I-MMD direct drive mode is only achieved on the speed of 75km / h.
Chery DHT is designed to design three gear on the engine. In this way, on the basis of the originally controllable dual motor output, the efficiency of the motor is further enhanced, and the engine can make a longer time in the high-speed cruise state. Avoiding a sudden and energy loss caused by repeated jump between the hybrid system between the electric drive and the fuel direct drive, further enhances the driving experience and more economical energy consumption due to emergency avoidance, urgency / deceleration, etc. And Chery’s design also reduces the requirements of the engine, and does not need to be a high-power engine with high-power engines to high-speed cruise pressure. Is this very familiar? Just talk to the previous two motor design.
Finally, 11 combination gear is provided under a two-motor, engine, and TSD double-axis drive design. In fact, 11 can not only provide 11, which is just a relatively high and suitable 11 gear for product use. From the data of the current Chery announced, the Chery DHT hybrid special transmission can achieve the maximum input torque of 510 nm. The average efficiency of the NEDC working condition is greater than 90%, the maximum transmission efficiency is greater than 97.6 percent, which has considerable efficiency and design forward-looking. Sex. It is believed that the system will appear in the hybrid version of a wide range of mainstream models in Chery.
Summary: What is the maximum feature of hybrid power? I think it doesn’t rely on battery high efficiency, that is, I can save oil than fuel cars, even if I don’t charge anxiety. For example, Toyota THS, Honda I-MMD and Independent Brand DHT and BYD DM-i, etc. Chery DHT added its own unique annotations to this efficiency advantage, bringing a hundred homing feelings for the hybrid system.