After the replacement of the second generation of Trumpchi GS8, the biggest highlight in terms of power is the installation of Toyota's latest enhanced hybrid system. Before introducing this hybrid system, I will first introduce you to a few sets of test data that we have done, and let's take a look at how good the new GS8 equipped with hybrid models really is.
Judging from the fuel consumption and battery life data of the GS8 hybrid two-wheel drive version of the model, the effect of this hybrid system is very real.
The second generation of GS8 is a seven-seat SUV over 5 meters long, with an average fuel consumption of only 6.44 liters per 100 kilometers, and a full tank of fuel can last 876 kilometers, which translates to only 0.56 yuan per kilometer.
This is the tangible effect of the 2.0TM engine + Toyota THS. At the moment of high oil prices, there is no one who does not like to eat less and run farther.
So in this article, I will analyze the hybrid system equipped with the second generation of Trumpchi GS8.
For the first time, toyota THS hybrids match domestic turbine engines
The hybrid system equipped with the second-generation GS8 is mainly composed of the third-generation 2.0TM engine of GAC Motor and the fourth-generation THS of Toyota. Regarding the system, I have consulted several very good data.
The first is the hybrid system engine, which is the third-generation Miller cycle engine independently developed by GAC Group, code-named 4B20J2.
This engine adopts GAC GCCS fuel economy control technology, Miller cycle, 350Bar high-pressure direct injection system, double-channel turbocharger, electronically controlled exhaust valve, intake and exhaust VVT, water-cooled intercooled, low-pressure EGR, variable oil pump, balance shaft and other advanced technologies, with a maximum thermal efficiency of 40.23%, which are currently mainstream and leading technologies.
In terms of power system durability, I interviewed the engineers of the GAC Research Institute, and according to the introduction, this engine has achieved the level of 21,000 hours of bench and 3 million + kilometers of vehicle durability.
This also became the first practice of Toyota Hybrid System to match a turbocharged engine in the world, and it is said to be coveted by Toyota's experts in power design.
GAC's third-generation 2.0TM engine
The hybrid system of GAC + Toyota combination has stronger power performance than Toyota hybrid
This third-generation 2.0TM engine of GAC Motor has a net power of 140kW and a net torque of 320Nm, which is significantly more powerful with a turbo than a naturally aspirated engine compared to the 2.5L engine parameters of Toyota Hybrid.
The power output of Toyota's hybrid system is mainly based on the engine, supplemented by the motor, so the response of the engine must be fast.
The 2.0TM engine developed by GAC uses low inertia turbine, water-cooled and intercooled technologies, so that it can achieve 80% torque output of 1000 rpm and peak torque at 1500 rpm, meeting the rapid response required by the hybrid system.
You know, the peak torque brought by the turbocharged engine is also more advantageous than the naturally aspirated engine, so that the engine and the motor are more compatible in the matching of torque output.
Owners who have driven camrys or Highlanders should understand that this hybrid system will actually strengthen the overall power output through the motor at low speed, and the high speed is mainly based on the power of the engine.
It can also be clearly seen from the above two engine parameters that the 2.0T turbocharged engine used by GAC Trumpchi can theoretically have a very good power performance at low speed and high speed.
Toyota's fourth-generation THS hybrid system
Toyota's fourth-generation THS hybrid system mainly includes a power transmission, a power control unit, a power battery, an HV-ECU vehicle controller, and a P4 rear electric drive assembly (four-wheel drive model).
The integration of the whole hybrid system is very high, the total weight is 109kg, and the power density and efficiency of the integrated motor controller of the PCU are higher than those of the same type.
GAC Research Institute officially announced that the four-wheel drive model (the new second-generation GS8 dual-engine four-wheel drive model) can achieve 0-100km/h acceleration in only 6.9 seconds, and the fuel consumption per 100 kilometers under NEDC conditions is only 5.8L, and the fuel saving rate is as high as 30%.
In the past, domestic consumers ridiculed that there were only two kinds of hybrids in the world, one was Toyota hybrid and the other was other hybrids.
In the field of hybrids, Toyota Hybrid is still at the current industry-leading level, and its hybrids have also sold more than 20 million vehicles worldwide, but I have never heard of any other brand that can be equipped with Toyota's hybrid system, especially turbo power + Toyota THS hybrid.
Toyota presented the latest THS hybrid system power unit during the Shanghai Auto Show
GAC Trumpchi was the first to eat crabs, and through independent development, it matched GAC's 2.0TM engine with Toyota's latest THS hybrid system and achieved mass production.
The editor interviewed the engineers of the GAC Research Institute and learned that the hybrid power carried on the second-generation GS8, because the power output is controlled by the power control unit in the THS system, so the comprehensive dynamic performance, the performance of the self-priming engine matching THS and the turbine engine matching the THS system is generally similar.
Moreover, the hybrid system has the characteristics of low-speed electric drive and rapid acceleration electric drive, so in most driving scenarios, the gap between the two is not large.
However, there are special cases, the turbine engine has the characteristics of low speed and high torque, so when driving at high speed with the engine direct drive, the engine can be kept at a low speed as much as possible, on the one hand, to ensure the economy of fuel consumption and power, on the other hand, to exchange for better NVH performance at low speed.
After our actual measurements, the noise isolation of the GS8 engine equipped with hybrid system in various speed zones is very good. In addition to some tire noise transmitted from the chassis to the interior of the car, the noise isolation of the outer boundary of the carriage is generally good.
In the process of rapid acceleration, the engine and the motor are output in synergy, the torque of the turbine engine is more obvious, and the self-priming engine needs to pull the same torque to pull the speed up, the speed climb is not as fast as the turbine, the peak torque is not as large as the turbine engine, and the body sensation and the performance of the rapid acceleration are not as good as the turbine engine.
So from another point of view, on this GS8, Toyota THS Hybrid actually hugged the thigh of Trumpchi engine, and GAC's power + Toyota's hybrid made the hybrid's performance better.
On the whole, the Toyota fourth-generation THS hybrid system equipped with the second-generation GS8 improves the quietness and smoothness of the engine start-in, makes the power transmission smoother and more efficient, and makes this seven-seat SUV both accelerated and low fuel consumption.