Green brand new energy cars and SUVs, whether it is pure electric EV or plug-in PHEV, have become the just need to buy cars in first- and second-tier cities. However, the new energy MPV market has not really risen, because there are not many choices in the market.
Recently, the 2022 BYD Song MAX DM-i was launched. BYD DM-i technology models have always been very popular, so what are the special advantages of the combination of DM-i and MPV?
The 2022 Song MAX DM-i is not a new generation, but a mid-term modification on the basis of the original, adding a DM-i powered model. A total of five versions of the model were launched, and the price after comprehensive subsidies was 145,800 to 172,800 yuan.
The change for the 2022 model is the Use Dragon Face family exterior design, streamer double-edge front grille, and diamond dragon eye LED headlights. In the promotion, BYD emphasized the advantages: "4.4 liters of 100 kilometers of lost power and fuel consumption, 1090 kilometers of ultra-long endurance, 7.9 seconds and 000 acceleration." "The 105km version also supports fast charging, and it takes only 30 minutes to charge from 30% to 80%. The 2022 model is equipped with VTOL mobile power station as standard, with a maximum discharge power of 3.3kW, which can stably output 220V AC, and it is more convenient to use outdoor electricity.
Compared with the fuel version of Song MAX that has been discontinued, Song MAX DM-i, in addition to enjoying the green card policy, free of purchase tax and unlimited travel, what are the advantages brought by DM-i technology?
First: Why is the oil-fired power generation drive better than the direct drive?
The Honda i-MMD and BYD DM-i technology structure is almost the same. In the city, under low-speed conditions, the fuel engine is only responsible for driving the generator to generate electricity, driving the vehicle completely on the electric motor, and when accelerating, it requires a large amount of power to be provided by the battery pack for a short time.
Let a small displacement internal combustion engine, work at the optimal efficiency speed to generate electricity, and then drive the vehicle through electricity, the overall efficiency is more fuel efficient than a large displacement internal combustion engine, often working in an inefficient state to directly drive the vehicle to save fuel.
However, it is only used in the medium and low speed driving "fuel burning power generation" method, but the fuel engine is directly driven by the vehicle when cruising at high speed, because the fuel engine is the most efficient during high-speed cruising, and there is no need to generate electricity first.
The most obvious is that the fuel consumption after dm-i power loss is very low, and the official claim is that the fuel consumption of 100 kilometers is as low as 4.4 liters, and the actual measurement can be completely done, even more fuel-efficient than Toyota THS. Now that the price of oil is so expensive, if the mileage of the car is relatively high, DM-i can significantly reduce the cost of the car.
Second: close to the driving experience of electric vehicles, the power is better and smoother
Using The combination of Xiaoyun-plug-in hybrid 1.5L engine + EHS electric hybrid system, the maximum torque of the engine is 135N·m, the maximum torque of the motor is 325N·m, and the comprehensive maximum power is 173kW.
Compared with ordinary hybrids, which often need to switch between fuel engines and motors, DM-i technology will be smoother because it has been driven by electricity in the city, and it will be much smoother and more comfortable than hundreds of thousands of oil vehicles.
In addition, the acceleration is smooth and powerful, and the acceleration time of the 2022 Song MAX DM-i is the same as that of the Song Pro DM-i, which is 7.9 seconds. For an MPV, this power is enough.
What is the difference between DM-i technology and ordinary PHEV?
There are still very few MPV that can be on the green card, and song MAX DM-i can match the geely Jiaji PHEV, their size and power configuration, and even the Price of Jiaji PHEV of 14.58-16.88 million yuan are competitors.
Jiaji PHEV technology comes from Volvo and uses the traditional 1.5TD in-line 3-cylinder turbocharged + 7DCTH wet dual-clutch transmission. Although this set of power is 3 cylinders, geely and Volvo jointly developed, technologically advanced and experience is not inferior to BYD.
The maximum power of the engine is 130kW, the torque is 255Nm, and the maximum power of the motor is 60kW. A ternary lithium-ion battery has a capacity of 15.5kWh and a pure electric cruising range of 82km. The Bosch iBooster brake system is adopted.
Unlike anything else, Geely's PHEV's motors feature a P2 layout – placing the motors between the fuel engine and the gearbox. Now BorgWarner, Bosch and other main promotions are also this layout. The advantage, of course, is to avoid an increase in the length of the power unit, and the efficiency is said to reach 97%, which is 2% higher than the coaxial.
Is DM-i technology the best technical route?
Geely Gage's type of PHEV uses traditional plug-in hybrid technology, and unlike dm-i power generation drive, after the Gage-Gage PHEV battery is de-energized, the fuel engine and motor are jointly involved in driving.
Let's put aside the technical experience, if it is all pure electrical performance under full power, it is actually the same. The only differences are the traditional car-making technologies such as their respective chassis, as well as the differences in material adjustment.
In the state of power loss, dm-i in urban driving will still have advantages. On the one hand, the driving experience of fully electric drive is very good, and the fuel consumption after DM-i loses power does have advantages.
Finally, what happens if you run at high speed after losing power? The high-speed ratio is not the size of the motor power, because after the loss of power, all the power is ultimately provided by the fuel engine, so the fuel engine has an advantage.