On April 26, GAC Trumpchi officially released a new hybrid technology brand under the electrification strategy - Julang Hybrid.
Hybrid systems, especially the DHT hybrid gearbox, are a very cutting-edge technology. All domestic brands will choose a breakthrough in technology.
Julang Hybrid, on the other hand, has a dual-hybrid technology route - digesting and absorbing Toyota's latest THS power shunt hybrid system, and the forward self-developed GMC dual-motor series parallel hybrid system.
It is equivalent to GAC Trumpchi taking the two technical route hybrid systems into the bag, and the two systems can be said to have their own strengths in technology. What kind of gameplay is this?
Why is it said that the Digestion and Absorption Toyota THS Hybrid System is said? Because Toyota uses its own 2.5L naturally aspirated engine, while GAC uses a 2.0TM turbo to match Toyota's latest THS power shunt hybrid system.
Toyota's THS technology is certainly unquestionable, and now it also uses a more powerful 2.0T engine, which is both fuel-efficient and powerful. The system is currently installed in the second generation GS8 dual engine series, with a thermal efficiency of 40.23% and a fuel consumption of 5.3L/100km under NEDC conditions. A car as big as the GS8 can achieve zero hundred acceleration in 6.9 seconds.
THS is mainly to match the big guys like GS8, and matching ordinary compact SUVs and cars is the second technical route we talked about - GAC's self-developed CMC2.0 hybrid system.
In principle, hybrid power mainly has two technical routes: power shunting, as well as series parallel connection. The former is represented by Toyota THS, while the parallel series has BYD DM-i, Honda i-MMD, etc., as well as GAC's GMC.
The technical details are complex and won't be covered here. The structure of the THS power shunt hybrid system is a little more complicated, and you can understand that its driving method is: either the motor drives the wheels alone, or the engine + motor drives together.
GAC motor's self-developed CMC2.0 hybrid assembly
The technical route of series parallel connection is relatively simple, in addition to the motor can be driven alone, most of the time the engine does not directly drive the wheels, but drives the generator to generate electricity first, and then driven by the motor. The advantage is that the engine always works at optimal speed and does not have to start and stop frequently.
In the high-efficiency road conditions of the internal combustion engine such as high-speed cruise, the power of the engine can be directly output to the wheels through the clutch. Of course, at this time, the motor can also be added as an auxiliary power.
Although the structure is different, the technical route of the GAC Trumpchi GMC 2.0 is similar to that of Honda's i-MMD and BYD DM-i, but they have an essential difference - the GMC 2.0 has an additional AT gear, which is equivalent to its engine direct drive mode with an additional 2AT gearbox.
An additional gear can make it easier for the internal combustion engine in the efficient work area to intervene in the drive, give full play to the efficiency advantages of the internal combustion engine when the road conditions are complex, and make the energy consumption of the whole vehicle lower. And the addition of 2AT makes the acceleration of the engine more efficient and more powerful.
However, the use of two-speed variable speed structure is not only GAC, the Great Wall Lemon DHT is also. Compared with the difference, the two gears of lemon DHT are direct gear shifts, while the GAC gear shift mechanism adopts the form of AT, and the shift action should be more supple.
With so many gears of GMC 2.0, what advantages will the driving experience have over the current hot Honda i-MMD and BYD DM-i? Emphasize that this is just technical theory.
BYD's DM-i system has obvious effects in urban conditions and urban expressways, but one drawback is that its 1.5L natural suction engine (Han DM-i switched to 1.5T) has limited power output - high-speed direct drive mode for a long time, after the battery is seriously dequeficient, the engine will remain running at a high speed. This leads to poor NVH and increased fuel consumption.
Therefore, GAC GMC 2.0, from the earlier first-generation GMC (used in GS4 PHEV) using a 1.5T three-cylinder turbocharged engine, switched to a more efficient 2.0L four-cylinder Atkinson naturally aspirated, plus the advantage of two-speed transmission. This makes the power better at high speed cruising, and it is more fuel-efficient without pulling high speeds.
But this is only theory, BYD has proved to be very successful, whether the technology is good or not depends on the final practical effect. In the future, if the GAC CMC 2.0 system can be efficient and reliable, it will certainly be as successful as Toyota.
At the GAC Trumpchi Julang Hybrid Brand Conference, GAC Trumpchi released the first model equipped with the Julang Hybrid GMC 2.0 - EMKOO Yingku.
It's a compact SUV based on the GPMA architecture and an avant-garde design. In addition to the traditional 1.5T and 2.0T fuel engines, Yingku is the first GAC Trumpchi model equipped with the Julang Hybrid GMC 2.0 system.
The 2.0ATK Atkinson engine in the GMC 2.0 hybrid system adopts GACIC GCCS high-efficiency combustion system, low-friction design, waste recycling system, intelligent thermal management and noise reduction design. Highlights such as the ultra-high compression ratio of 15.6, GAC official nominal maximum thermal efficiency of 42.1%.
The GMC 2.0 electromechanical coupling system pioneered the integrated dual motor multi-stop DHT, which realizes multi-stop multi-mode drive and high torque output, and the official claims that the thermal efficiency utilization rate under WLC conditions exceeds 95.5%.
The point is that CMC 2.0 is not only developed for HEV ordinary hybrids, it can achieve pure electric, extended range, hybrid and other multi-mode multi-gear drive. That is to say, it can meet the needs of HEV/PHEV/REEV models, and it will definitely be plugged in in the future.
Therefore, THE EMKOO Shadow Cool equipped with julang hybrid GMC 2.0 is still very worth looking forward to.