Among the hybrid cars in the range of 20/250,000, BYD Han DM should be the car with the highest sales volume and the highest evaluation. Why can this car mix two fields? What are the highlights in terms of performance and fuel consumption? Let's find the answers to these two questions.
Advantages of DM3.0 DM is still equipped with "3.0 parallel plug-in hybrid system", which is the system that BYD should retain and distinguish from DMp when building high-performance cars in the later period; Although DMp is a high-performance standard, it is also meaningful to maintain the platform of "super-performance" standard.
The internal combustion engine of the system is equipped with an ordinary Otto cycle 2.0T(487ZQB) and integrated with a BSG generator starter with a power of 25kw. The combination of two engines is used to drive the front axle, but it will not be driven separately. In fact, DM3.0 has been mainly driven by extended range in HEV hybrid mode, assisted by internal combustion engine, which is also the operation mode of Honda ECVT architecture.
Technical highlights: BSG6DCT is the highlight of Korean DM internal combustion engine system.
Whether the fuel vehicle is equipped with AT/DCT/CVT or not, as long as the gear set is used to shift gears or the conical steel belt is used to simulate the forward gear, there will be setbacks in the shift process, and AT is absolutely no exception. The reason is that the connection between the engine and the gearbox is separated when shifting gears, and the engine speed drops excessively during the process. The speed of forward gear combined with low-speed output power is lower than the sliding speed, and the short-term braking of the engine is the reason for the retrogression.
In DM3.0 system, the high-power BSG motor can actively control the crankshaft speed of the engine during the six-speed wet dual-clutch shift of hybrid power. There is no speed difference before and after shifting, so the hybrid mode of oil and electricity will be smooth.
So far, as a parallel plug-in hybrid power system, there are no shortcomings. The rear axle is driven by180 kW/330 N m permanent magnet synchronous motor. The rear wheel drive in pure electric mode is quite good, or it exceeds the performance standards of most fuel vehicles and Honda hybrid vehicles in the same class.
In the hybrid mode of HEV, it is all-wheel drive (full-time four-wheel drive). Considering its elk test score above 80km/h and sports car performance standard of 4.7 seconds, Han DM is an excellent hybrid high-end car.
Analysis of the characteristics of ECVT Honda and BYD Honda Accord ECVT is a hybrid vehicle with "extended range" as its main feature. It is driven by the motor, driven by the internal combustion engine in the gearbox at medium and low speeds, and outputs power for the motor and the internal combustion engine at the same time during rapid acceleration or high-speed cruising. The system is similar to DM3.0, but the infrastructure is different.
However, Honda's ECVT does not rule out the possibility of learning from BYD's technology, because its mass production time is much later than BYD's ECVT; In 2008, BYD has built a F3DM plug-in hybrid car equipped with ECVT, which is exactly the same as Honda's hybrid car, so it seems that this Japanese car company has no technical advantage.
"Oil-electric hybrid" system is equal to "simple matching standard" of plug-in hybrid. To put it bluntly, the capacity of the power battery pack is very low, and the standard of pure electric drive is several hundred meters. Therefore, the hybrid Accord can only operate in HEV with some hybrid modes, and the electric energy is completely converted by fuel, so it is a very low-level hybrid vehicle.
The power battery pack capacity of Korean DM is much higher, and it can travel more than 80km in pure electric mode; As long as you charge, you don't need oil at all, and the car cost can be about 10 times lower. Even without charging conditions, this system can still be used as a hybrid car of Accord, but its performance is much better, and its average fuel consumption is as low as 6L/ 100km. What can Accord compare with Han DM?
At the same time, ECVT is designed as the standard of "transverse gearbox", that is to say, Accord is a predecessor scooter, and its handling feeling is much worse than that of rear drive, and it has no comparative value compared with full-time four-wheel drive ... Aside from the unreasonable premium of joint venture brands, the starting price of DM in Korea is less than 220,000, and the actual value of Accord with a guide price of 239,800 should be less than 1.5 million. Consumers who choose it at its guiding price are really "suckers".
Then from the analysis of performance, energy consumption, maneuverability and operation mode (EV/HEV/REEV), the Honda Accord ECVT is worthless. If compared with BYD's DMi system, maybe all Honda's technologies will be backward.
DMi ECVT is an option that BYD once again took out, focusing on ultra-low fuel consumption; The dual-motor power of this system has surpassed that of Honda. The power battery is lithium ferrous phosphate blade battery, which is far more safe, stable and long in service life than ordinary lithium ternary battery. The IGBT and battery motor of the electronic control system are independently developed, which is not comparable to Honda.
The characteristics of ECVT are quite different and can be compared with more internal combustion engines. The power reserve of Honda Atkinson 2.0L engine is107 kW/175 N m. What is BYD's engine level?
There are two options for the Atkinson cycle engine developed by BYD. The standards are as follows.
With the same Atkinson cycle technology, the standard of naturally aspirated 1.5L is indeed lower than Honda's 2.0L, but it seems to be not much lower. The torque of the 1.5T Atkinson model with turbocharging technology has far exceeded that of Honda 2.0L.
Both torque and speed are 9549 power, and both brands of engines are extended-range internal combustion engines with power generation as the mainstay; In the same middle and low speed range, BYD's 1.5T can output much higher power, and Honda has to increase the speed to achieve considerable power. Then it is obvious that BYD's low-speed range extension is more fuel-efficient, and noise, vibration and wear are more controllable. It can be seen that Honda's technology is still backward.
BYD Atkinson engine can realize small displacement, high power and large torque, and its core factor is to cancel the traditional pump system structure connected with crankshaft such as compressor and generator. Without these machines losing the torque of the crankshaft, there will naturally be high torque and high power. Secondly, EGR waste gas recovery technology can also effectively reduce fuel consumption and emissions. Considering that antifreeze does not circulate during cold start, there are three different standard circulating cooling modes. This machine is different from other internal combustion engines.
Coupled with its optimal thermal efficiency of 43.02%, and the setting that the speed can be stabilized in the optimal thermal efficiency range most of the time, at least no other car company has reached the same level at present.
Key points: if Han upgrades the architecture, this car should not use DMi fuel-saving system front drive; Instead, DMp with high-power driving motor will be added to the rear axle, so that full-time four-wheel drive under three working conditions of EV/HEV/REEV can be realized.
Therefore, in terms of performance and handling, Honda's hybrid cars are still not comparable, and the gap between Toyota is of course even greater; However, in terms of energy consumption, the hybrid mode of oil and electricity can be comparable, and the integrated EV operation mode will be much lower. An excellent hybrid vehicle must be a "three-in-one vehicle" that can be used as an electric vehicle, a hybrid electric vehicle and an extended-range electric vehicle. BYD did it.
Tianhe MCN authorized release
Welcome to forward the message for discussion, and reserve the copyright protection right.
Han Dm, of course.
Here is the most grounded answer for you. Want to know the principle and difference of oil-electricity hybrid between BYD Han dm and Accord, please continue. You can easily find many technical articles explaining them on the Internet. If you are smart and don't want to spend your mind on choosing two cars just from the perspective of user use, please continue reading.
(Chinese dm)
1. Durability: Aside from the quality problem of bicycles, Accord mixed to kill BYD Korea. I can say responsibly that even if BYD is so good and technologically advanced, the Accord is definitely better than BYD in durability: Why? How does BYD's car-making history compare with the Accord? Comrades, don't believe in miracles, don't believe in speeding in corners. The improvement of technical durability must come from the accumulation of experience, and the extra time is not wasted! Accord hybrid+1 min
2. Ease of use; Even if the car is tied, at this stage of development, manufacturers above the horizontal line will shield customers from the complex logic of using the underlying technology, so that everyone can drive as long as they step on the accelerator and put on the gear, and the same is true for oil-electric hybrids. Getting started is not difficult. Korean dm and Accord mixed+1.
(Accord Hybrid)
3. Power: Korean dm kills the Accord hybrid, and the acceleration of 100 kilometers is very different, one sports car level and one family car level.
Because of the disparity. Han dm+2 Dian
4. Smooth dynamic convergence: Accord is better, and technical parameters are not discussed. Accord is indeed superior in terms of hybrid efficiency, oil-electricity switching and power connection. This indicator is also a cliche, empiricism is supreme, and it can't be bypassed. Accord mixed+1 min.
(Accord Hybrid Interior)
5. Economy: The Accord hybrid is better. The Korean dm is a 2.0t engine, and the Accord hybrid is a 1.5t engine, which is negatively related to the power performance. Even if the difference of engine thermal efficiency is not mentioned, 1.5t is inherently more fuel-efficient than 2.0t, and because of the high maturity and reasonable blessing of Accord hybrid technology. Accord mixed+1 min.
6. Comfort: Han dm is more pleasing to me. I have tested the mixture of Han and Yage respectively, and hankyung seems to be a higher level than the Accord.
Car, the interior is more advanced, the space is bigger, the configuration is higher, and the overall comfort is higher than that of Accord. Sound insulation should also be considered as part of comfort. Here, the sound insulation and mute of Korean dm are better than that of Accord. Chinese dm+ 1 min
(Han dm interior)
7. Driving performance: regardless of the outcome, the driving performance of both cars is quite satisfactory. In their respective levels, the driving performance is not as good as expected, and it is not brilliant. Here, let's talk about shortcomings. Han dm rear chassis bounces, the front and rear experience is inconsistent, and the Accord is mixed. When it is slammed, it seems that the body is not rigid enough. Korean dm and Accord mixed+1.
8. Terminal price: Accord hybrid has terminal discount, Korean dm does not have it for the time being, and the official guide price Accord hybrid is also slightly cheaper. Accord+1 integral
9. After-sales maintenance: Korean dm has a warranty of 7,500 kilometers, and I have calculated that all maintenance costs are the highest100,000 kilometers:
Accord hybrid warranty is 5,000 kilometers, and all maintenance costs up to100000 kilometers are as follows:
It can be seen that the maintenance fee of Accord is about 20% cheaper than that of Korean dm. Accord hybrid+1 min
10. Appearance: Different opinions, no score.
Summary: Chinese dm total score: five points
Accord mixed: seven points
Dear guest officer, if you are satisfied with my answer, please be careful. Thanks again!
People who are worried, half-hearted and in a dilemma must have foreign brands and face enough.
Byd's Korean DM and accord mashup;
1, appearance: Korea is relatively atmospheric and has a certain sporty atmosphere; If the detailed accord is mixed, it is smaller, but more calm.
2. In terms of price: If the proportion of preservation is considered, Accord is the first choice; If it is for home use, Han is the first choice.