Technical Division
Written by | Chen Hui
Oil-electric hybrid has always been a good play for Toyota and Honda, and toyota and Honda have been widely recognized around the world with their real efforts to reduce fuel consumption. But now, now, there is a domestic player in the circle.
On March 30, Geely's first oil-electric hybrid model, the Hoshigoku L Thor Hi· X oil-electric hybrid version (hereinafter referred to as the Star Yue L hybrid version) is officially launched, the two configuration models are priced at 171,700 yuan and 183,700 yuan respectively, compared with the CR-V and RAV4 oil mix, its price is more advantageous.
Well, the problem is, Geely's self-developed set of Thor Hi · What is the strength of X oil-electric hybrid technology? To answer this question, we combine the Thor Hi· X Hybrid Technology chats with the driving experience of the Hoshigoku L Hybrid Edition.
Compared to the old hybrid, Thor Hi · How strong is X?
Let's take a look at Thor Hi The basic structure of X oil-electric hybrid technology (hereinafter referred to as Raytheon hybrid), its core structure consists of two motors (one power generation, one drive), a 1.5T engine and a 3-speed DHT hybrid electronically controlled transmission.
"The technical route of Thor Hybrid is similar to that of the Honda i-MMD, both of which use the engine and motor series in parallel, and the mechanical structure is simpler than that of toyota hybrid, so the reliability is higher," Honbon Extreme Turbo commented.
The biggest difference between Thor Hybrid and other hybrid systems is the 3-gear DHT, compared to Honda's third-generation i-MMD 1 gear, the Great Wall DHT's 2nd gear, Thor Hi · The X's 3-speed allows the engine to drive directly over a wider range of speeds. Usually, Honda's third-generation i-MMD can not use direct-drive vehicles with engines until after 70km/h, while Thor Hybrid can drive vehicles directly from 20km/h, that is, it has a wider range of assistance to drive motors.
How to understand it? As we all know, the battery capacity in hybrid models is relatively small, usually only one degree of electricity, pure electric mileage is almost negligible, in many working conditions, the motor and the engine are required to work together, even if the engine does not directly drive the vehicle, but it will also charge the motor. If there is only 1 gear, part of the engine horsepower is lost in vain, the advantage of Thor Hybrid is that it has 3 gears, so that the engine not only covers a wider range of speeds, but also the efficient working range it participates in is also wider, from low speed to medium speed to high speed, basically covering the vast majority of the road conditions of the actual car, and the comprehensive fuel consumption will naturally be lower.
"Of course, this is an ideal situation, and one more gear will only lead to a reduction in fuel consumption by a few percent, which is likely to be overshadowed by the habits of the driver. And multi-gear means that the control unit is more complex, whether it is the best choice or not, and a lot of data is needed to verify," said The Turbo.
Measured star more L hybrid version, really fuel saving is good to open
After talking about the technical orientation of Thor Hybrid, let's talk about the actual performance of the Hoshikoshi L Hybrid Version. Exactly two weeks ago, I measured the car on the plateau.
First, let's briefly introduce the 1.5T engine mounted on the Shimokoshi L. The machine has undergone many modifications, eliminating the crankshaft pulley train, changing the operation mode to a miller cycle with a higher compression ratio and higher efficiency, and with high-pressure direct injection and low-pressure EGR technology, its maximum thermal efficiency is 43.32% - which is also the most thermally efficient engine used in the current oil-electric hybrid system.
With a more efficient fuel system that can operate over a wider range of speeds, Thor Hi· X's fuel saving performance is really good. The official said that "the comprehensive 100 km fuel consumption of the Xingyue L Hybrid Version is 4.3 L", and the author's 100 km fuel consumption data of 100 km of Shangri-La, which has an average altitude of 3500 meters, after running the 100 km test mileage composed of uphill, downhill and bad roads, is 4L. Considering that the test scenario is more idealistic, it is estimated that the actual fuel consumption will be slightly higher than the test data, but under normal circumstances, the fuel consumption of 100 kilometers is completely fine within 5L.
Not only that, but the driving experience of hoshigoku L is also excellent. In the previous test drive, this power system gave the author an intuitive feeling that the response is fast, the output is smooth, and it is very close to the experience of pure trams. This is due to the fact that the action of the engine intervention is very delicate, the engine will intervene when accelerating sharply, at this time you can hear a little bit of the sound of the engine, but you cannot feel the action of the intervention, and the electric drive system and the fuel system cooperate tacitly. It is worth mentioning that its power reserve is also very strong, the official zero hundred acceleration time is 7.9 seconds, although the author does not have the conditions to do actual measurements on the plateau, but the subjective feeling that this car is basically comparable to the speed performance of the Two-Wheel Drive Fuel Version of the Hoshigoku L equipped with a 2.0T engine.
In contrast to the Rong put double engine, the star more L hybrid is really a province
As mentioned above, the Thor Hybrid is closer to the Honda Hybrid, and the advantage of the Honda Hybrid is that it is simpler in structure and also very fuel-efficient. Here, we may wish to compare the Star-More L Hybrid and the Rongfang Double Engine, so that you can more intuitively understand the advantages of Thor Hybrid.
Looking at the structure first, the Rongfang dual engine consists of a 2.5L Atkinson cycle engine, an E-CVT transmission and an electric motor. The thermal efficiency of this 2.5L engine is 41%, although it is also the world's top level, but compared with the Hoshigoku L hybrid version with a thermal efficiency of 43.32%, there is still a gap.
In terms of fuel consumption, the official comprehensive 100-kilometer fuel consumption of the Rongfang dual-engine two-wheel drive version is 4.7L, and the average fuel consumption of the real owner of a forum is 6.1L. This performance is undoubtedly very good compared with the fuel vehicle, but the fuel saving effect of the Star Yue L hybrid version is more obvious than it.
Let's talk about motivation. Unlike the hoshikoshi L hybrid version, the motor and engine can act as the main force, respectively. The power output of the Rongfang dual engine is mainly responsible for the engine, and the motor can only work alone at low speed, or provide certain assistance for the engine in the medium and high speed stages. Therefore, although its power response is not up to the level of pure electric vehicles, it is also much faster than the general fuel vehicle, but because the power reserve of the 2.5L engine itself is not very strong, its overall performance is not as good as the Star-Yue L hybrid version.
According to actual measurements, the zero hundred acceleration time of rongfang double engine is 8.24 seconds, which is slower than the hybrid version of Xingyue L. Not only that, in the actual measurement, the power of the Rongfang double engine can not always be smooth, in the emergency oil collection such conditions, there will be obvious setbacks, the experience is not top-notch.
As for the practical level, the competitiveness of the Star Yue L is stronger. Its space and configuration advantages are obviously better than Rongfang double engine, and the price is much cheaper. The official guidance price of the Rongfang dual engine two-wheel drive version is 225,800 yuan, counting the discount of thousands of terminals, the overall car price is nearly 50,000 more expensive than the Xingyue L hybrid version. At the current oil price, according to the calculation of running 15,000 kilometers per year, the difference of 50,000 is equivalent to 7 years of oil costs - this gap, I am afraid that many people will not turn a blind eye.
『 Final Remarks 』
I wonder if you have found an interesting phenomenon? Although independent brands are now blossoming in the field of hybridization, most of them take the mixed route, such as Chang'an's IDD, BYD's DM-i, the Great Wall's DHT, the oil-electric hybrid route, and at present, only Geely has launched the Thor hybrid. Such a situation is not difficult to understand, on the one hand, there is still the advantage of green cards in the mix, on the other hand, it seems that it is not an easy task to directly challenge the position of the two fields in the mixed world.
But the hybrid market is, after all, a piece of fragrant food. In 2020, Toyota and Honda hybrid models sold nearly 380,000 vehicles, by 2021, this data will become 580,000 vehicles, an increase of more than 50% year-on-year, and in the first two months of this year, the sales of Ryota hybrid models exceeded 110,000, such a hot market, independent brands must make a difference.
What's more, Geely also has its plans, rather than entering the fiercely fighting plug and mix market, it is better to step into the competition and slightly milder human oil-electric hybrid circle. Even though Ryota has a higher status in the hybrid world, Thor Hybrid also has its own technological innovation - through 3 gears to achieve ultimate fuel savings. For consumers, as long as it is durable and reliable, can really save fuel, and the comprehensive quality of the car is higher, why not pay for the Star Yue L hybrid version?
-END-