After Trumpchi’s second-generation GS8 was replaced, the biggest highlight in terms of power is that it is equipped with Toyota’s latest enhanced hybrid system. Before introducing this hybrid system, let me first introduce to you a few sets of test data we have done, and let’s take a look at how awesome the new GS8 equipped with hybrid models is.
Judging from the fuel consumption and range data of the GS8 hybrid two-wheel drive model we measured, the effects of this hybrid system are very real.
The second-generation 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 range of 876 kilometers on a full tank of fuel, which is only 0.56 yuan per kilometer.
This is the real effect brought by the 2.0TM engine + Toyota THS. In today's era of high gas prices, who wouldn't love a car that eats less and goes farther.
In this article, I will analyze what is so great about the hybrid power system equipped on Trumpchi’s second-generation GS8.
Toyota THS hybrid breaks record for the first time by matching domestic turbine engine
The hybrid system equipped with Trumpchi’s second-generation GS8 is mainly powered by GAC’s third-generation 2.0TM engine, Toyota Composed of fourth generation THS. I've found some pretty cool data about this system.
First of all, the hybrid system engine is a third-generation Miller cycle engine independently developed by GAC Group, code-named 4B20J2.
This engine adopts GAC GCCS fuel efficiency control technology, Miller cycle, 350Bar high-pressure direct injection system, dual-flow turbocharger, electronically controlled wastegate valve, intake and exhaust center VVT, and water-cooling Advanced technologies such as cold and low-pressure EGR, variable oil pump, and balance shaft have a maximum thermal efficiency of 40.23%. These are currently mainstream and leading technologies.
In terms of the durability of the power system, I interviewed engineers from the GAC Research Institute. According to reports, this engine has achieved a bench test of 21,000 hours and a vehicle durability of 3 million+ kilometers.
This has also become the world's first practice for Toyota's hybrid power system to match a turbocharged engine, and it is said to have been coveted by Toyota power design experts. GAC’s third-generation 2.0TM engine
The hybrid system of GAC + Toyota has stronger power performance than Toyota’s hybrid
This GAC’s third-generation 2.0TM engine has a net power of 140kW , the net torque reaches 320Nm. Compared with the parameters of Toyota's hybrid 2.5L engine, the power of the turbine is obviously much stronger than that of the naturally aspirated engine.
The power output of Toyota's hybrid power system is mainly based on the engine and supplemented by the motor, so the engine response must be fast.
The 2.0TM engine developed by GAC uses low-inertia turbine, water-cooled intercooling and other technologies, allowing it to achieve 80% of torque output at 1,000 rpm and peak torque at 1,500 rpm. Meets the fast response required by hybrid systems.
You must know that the peak torque brought by a turbocharged engine is also more advantageous than a naturally aspirated engine, making the engine and motor more consistent in matching torque output.
Car owners who have driven a Camry or Highlander should all know that this hybrid system actually uses the electric motor to supplement the overall power output at low speeds. At medium and high speeds, it mainly relies 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 very good power performance at low speeds and high speeds. Toyota's fourth-generation THS hybrid system
Toyota's fourth-generation THS hybrid system mainly includes power transmission, power control unit, power battery, HV-ECU vehicle controller, and P4 rear electric drive assembly ( four-wheel drive models) and other parts.
The entire hybrid system is very highly integrated, with a total weight of only 109kg. The power density and efficiency of the PCU integrated motor controller are higher than similar products.
GAC Research Institute officially announced that the four-wheel drive model (the new second-generation GS8 dual-engine four-wheel drive model) can accelerate from 0 to 100km/h in just 6.9 seconds, and the fuel consumption per 100 kilometers under NEDC conditions is only 5.8 L, the fuel saving rate is as high as 30%.
In the past, domestic consumers joked that there are only two hybrids in the world, one is Toyota hybrid and the other is other hybrid.
In the field of hybrid power, Toyota Hybrid is still at the current industry-leading level. Its hybrid vehicles have also sold more than 20 million units worldwide, but I have never heard of other brands that can carry Toyota series of hybrid systems, especially turbocharged power + Toyota THS hybrid. The latest THS hybrid system power unit displayed by Toyota during the Shanghai Auto Show
GAC Trumpchi is the first to try this. Through independent development, it combines GAC’s 2.0TM engine with Toyota’s latest THS hybrid system Matched and achieved mass production.
The editor interviewed an engineer from the GAC Research Institute and learned that the hybrid power installed on the second-generation GS8 has a comprehensive dynamic performance because the power output is controlled by the power control unit in the THS system. The performance of a self-priming engine matched with a THS system and a turbine engine matched with a THS system are generally similar.
Furthermore, the hybrid system has the characteristics of using electric drive at low speeds and electric drive for rapid acceleration, so in most driving scenarios, the difference between the two is not big.
However, there are exceptions. Turbine engines have the characteristics of low speed and high torque, so when driving at high speeds with direct engine drive, the engine can keep running at low speeds as much as possible, which on the one hand ensures economical fuel consumption. performance and power, on the one hand, it also achieves better NVH performance with low speed.
After our actual testing, the engine noise in the GS8 equipped with a hybrid system is very well isolated in various speed ranges. Except for some tire noise transmitted from the chassis to the interior of the car, the cabin's overall performance in isolating external noise is good.
During rapid acceleration, the engine and motor output together, and the torque of the turbine engine is more obvious. However, to obtain the same torque, a self-priming engine needs to increase the speed. The speed rise is not as fast as that of the turbine, and the peak torque is not as fast. The turbo engine is large, and its body feel and rapid acceleration performance are not as good as those of the turbo engine.
So from another perspective, on this GS8, the Toyota THS hybrid actually takes advantage of the Trumpchi engine. GAC’s power + Toyota’s hybrid make the hybrid performance even better.
Taken together, the second-generation GS8 is equipped with Toyota’s fourth-generation THS hybrid system, which improves the quietness and smoothness of engine start-up intervention, making power transmission smoother and more efficient, making this seven-seater SUVs have the distinct characteristics of refreshing acceleration and low fuel consumption.