With the international tension, the continuous sharp rise in oil prices, affecting the heart of every fuel car owner, when the increase from the previous 10-20 yuan jumped to more than 40 yuan, oil prices ushered in the "9 yuan era", but also let more and more people begin to pay attention to the huge impact of oil on daily consumption. "Adding oil once can buy a bicycle, adding 4 times of oil, you can buy an electric bicycle" paragraph, has also become one of the largest paragraphs on major Internet platforms in recent days for teasing oil prices.
At this time, the lower cost advantage of hybrid and new energy vehicles has also been concerned by more and more potential car buyers, and in February this year, BYD has become the biggest winner in the new energy vehicle market with the hot sales of DM-i series models, which also shows that the hybrid technology of independent brands has been recognized by the market.
When it comes to hybrids, the first thing that people think of is often the Japanese hybrid that first entered this market, and there is a widely circulated paragraph in the industry that says: There are only two kinds of hybrids in the world, one is Toyota, and the other is other. It can also be seen from this paragraph that in the previous long period of hybrid technology development, Toyota's THS hybrid is not only a breakthrough, but also a leader.
However, in the past year, as independent brands have begun to transform to electrification, more and more high-efficiency powertrains combined with electromechanical have come out, the power is stronger, the NVH is better, and there are policy advantages, and the position of the Japanese hybrid industry represented by Toyota has been precarious.
Today, we will take the current hottest BYD DMI-i and Toyota Dual Engine, respectively, as the representative of independent brands and traditional Japanese hybrids, in terms of technology and experience to compare, after reading this article, I believe that you independent and joint venture two kinds of hybrids are superior and inferior naturally have their own judgment.
The two solve the problem in different ways
In the era of traditional gasoline vehicles, the internal combustion engine due to the use of gasoline single-action mode, the direct power source of the vehicle is the internal combustion engine, and the internal combustion engine on the one hand has different technical levels, on the other hand, the actual performance is also affected by the actual working conditions and transmission efficiency, so in the traditional gasoline vehicle, the engine and speedbox have always been the key indicators to measure whether a car is advanced.
The operating efficiency of the internal combustion engine is naturally the key to determining the fuel economy of a car, and we often see many engines with thermal efficiency of more than 40% and other slogans, which also represent that the engine is more fuel-efficient.
However, the characteristics of the operation of the internal combustion engine also determine that in the vast majority of working conditions, the internal combustion engine can not drive in the best working conditions, and finally in the actual experience we will also find that although the speed is very slow when blocking the traffic, it is obviously fuel-intensive, and the steady-state high-speed working conditions, although the speed is faster, the wind resistance is much larger, but it is more fuel-efficient.
Starting from improving the thermal efficiency of the engine, technological breakthroughs have become slower and slower, but the increasingly strict fuel consumption limits and emission regulations continue to increase the speed of faster, which also leads to the traditional gasoline single-action engine can no longer meet the policy requirements for environmental protection, car companies have to start to develop a new generation of internal combustion engines, or turn around into new energy vehicles.
From the current overall industrial direction, the hybrid idea of mechanical and electrical combination has become the choice of the vast majority of car companies.
Mention of hybrid, I believe that many people have a certain understanding, here is no longer elaborated on the specific mode of work, from the effect point of view, the motor and the engine mixed output, on the one hand can help the engine to reduce the burden, in the engine is in a more fuel-intensive working state, are used to work with the motor, on the other hand, after joining the motor can further achieve kinetic energy recovery, the above, the ultimate purpose of nature is only one, that is, to save fuel.
Toyota as the representative of the Japanese hybrid, the birth time is earlier, from the overall concept point of view, belongs to the complete focus on the fuel saving aspect, the engine will directly drive the wheels in most cases, in addition, the electrification configuration specifications in the car are also more conservative, on the one hand, the motor power is small, only play an auxiliary role, the power battery capacity of the vehicle is also very small, even if it is the latest generation of models, it can only maintain pure electric driving for a short time.
The independent brand hybrid represented by BYD DM-i has a different idea, the weight of the motor is further enlarged, the motor power is greater, the battery capacity is also larger, the motor can directly drive the wheel to achieve a longer period of pure electric driving, the weight of the engine is reduced, the working frequency is reduced, and the proportion of power generation tasks is also more.
What is the difference between the usage level?
Different problem-solving ideas naturally bring different effects.
Whether the Japanese hybrid is focused on the remix angle, the advantage is that it does not need to be charged, and there is almost no difference between the use level of the fuel vehicle, but it brings better fuel economy.
However, the design of small batteries, resulting in certain drawbacks in the electrification operation of the vehicle, such as in the case of low temperature, Toyota dual engine may directly appear motor does not start, performance decline, fuel consumption rises significantly and other issues, the core reason is still after the low temperature, the original capacity is not large battery, charging and discharging is affected by greater impact, can only wait for a period of time, the working temperature increases, the state will improve.
On the other hand, the dual engine technology developed based on the perspective of improving the energy efficiency of fuel vehicles also has the problem of poor power performance, and there are certain disadvantages compared with traditional fuel vehicles and new energy vehicles in the same level.
In addition, although the PHEV version derived from the technology is also supplied to the market, from a technical point of view, it only further increases the battery capacity, but there is almost no big difference in the working mode, resulting in the task of large-capacity batteries, more pure electric driving level in the early stage, in order to meet the relevant requirements of the policy for PHEV for pure electric mileage, not fully added to the overall working environment of the vehicle, and the vehicle PHEV has brought greater self-weight, Loading space is also generally affected.
The independent brand hybrid represented by BYD DM-i mainly focuses on PHEV, although the battery capacity is larger, but the overall price is not expensive, and it is basically equivalent to the same level of models as the joint venture brand.
Based on the large motor and large battery, the DM-i series models have excellent power performance and can achieve a longer mileage of pure electric driving range, while the working intensity of the internal combustion engine is weakened, and it can work in a narrower but more efficient working range, acting as a range extender, and if necessary, it will directly drive the wheels to improve transmission efficiency; the large battery acts as a reservoir function to ensure that the balance of power and fuel efficiency can still be guaranteed when used for a long time.
Such a model allows the efficiency of the internal combustion engine to be further improved, and to a certain extent, it avoids the technical barriers of overseas brands of internal combustion engines, resulting in problems that cannot be overcome by high-efficiency internal combustion engines, and the actual fuel consumption performance can achieve flush or even surpass the effect of HEV remixing of the same level. In addition, different motors and battery packs, but also can be composed of different positioning products, high-end power only need to carry a higher power motor and a larger capacity battery can be achieved, in terms of selectivity, but also give consumers more choices.
Taking the BYD Song Pro DM-i model as an example, its price range is 13.58-160,800 yuan, providing two kinds of collocations, of which the low-end version battery capacity is 8.3kWh, the motor power is 132kW, the 100 km acceleration is 8.5 seconds, the pure electric driving can be 51 km, and the feeder fuel consumption is 4.4L per 100 km; the high-end version battery capacity is 18.3 kWh, the motor power is 145 kW, the 100 km acceleration is 7.9 seconds, the pure electric driving is 110 km, and the fuel consumption after feeding is 4.5 L per 100 km. Compared with traditional fuel vehicles, power, NVH have certain advantages, fuel consumption is greatly reduced, pure electric driving short-distance as a new energy vehicle use, many regions in the country also provide license plates, unlimited traffic and other policy support, to achieve the reduction of fuel vehicles dimensionality.
summary:
Through the comparison of technology and actual effects, it can be seen that although the traditional Japanese hybrid represented by Toyota Shuangqing and the DM-i plug and mix represented by BYD can achieve a better fuel-saving effect, the fundamental idea is still very different, in terms of the technical dimension of 2022, the Japanese HEV remix has no advantage in the use of its own brand DHT series products, but the word-of-mouth advantage and reliability advantage accumulated over the years, the independent brand large battery plug and mix is more reasonable, and the covered scene is more abundant. It is achieved that blue is better than blue.