Perhaps BYD did not expect that the new DM-i hybrid system would be so popular. Since the release of the BYD DM-i super hybrid system in January 2021, the Qin PLUS DM-i and Song PLUS DM-i equipped with this hybrid system have been listed one after another, and the order is so hot that it takes several months to queue up to pick up the car.
In line with the trend of hitting iron while it is hot, BYD has also accelerated the replacement of other car series plug-in and hybrid systems, and today we preemptively test-drove to the upcoming Song MAX DM-i.
Get to know Song MAX DM-i in one minute
1. At present, Song MAX DM-i has opened pre-sale, and the new car has launched 5 configuration models, with a pre-sale price range of 146,800-17.38 million yuan.
2. The new car provides two different pure electric endurance versions, which are 51km/105km, and are equipped with dedicated power blade batteries, of which the 105km version supports fast charging.
3. In the power part, the new car will be equipped with a plug-in hybrid system composed of a 1.5L engine and an electric motor, accelerating 7.9 seconds per 100 kilometers.
4. The new model offers a "upgraded roof" version with a higher body height, all with a 6-seat layout, while the regular version has a 7-seat layout.
5. In terms of configuration, it is equipped with DiLink 4.0 intelligent network system and DiPilot intelligent driver assistance system.
How the new car has changed
Appearance: The "upgraded roof" design on the side is quite unique
First of all, from the appearance of the design, the new BYD Song MAX DM-i as a whole maintains the shape of the fuel version, but in the details of the design is the use of the latest family language.
For example, the front face part, the Dragon Face dragon face design after years of evolution, the entire contour line is more and more natural, the lower bumper is equipped with deflector slots on both sides, the chrome decoration of the front face is also appropriate, and the atmospheric appearance is still in line with the appetite of the Chinese people.
Come to the side, I believe that everyone also noticed the bulge on the roof, many people subconsciously think that this is a roof trunk, in fact, it is a "upgraded roof" of a design, its role is to enhance the head space in the car, such a design is very rare in domestic cars, very special.
In addition, the Song MAX DM-i long-endurance model also provides a fast-charging adapter, which can be charged on the fast-charging pile; and it also supports the external discharge function, providing 3.3kW of power.
In the rear part of the car, the internal light group of the tail light adopts the new concept of "dragon claw mark", which does improve a lot of quality and grade compared to the previous simple light strip.
Interior: Improved sense of grade
Inside the car, the interior is still a familiar layout, but the new color scheme will still bring a different feeling. The car screen in the middle of the center console has been improved to 15.6 inches in size, and the screen ratio has also been optimized to no longer look like a bulky large flatbed.
The car part is equipped with BYD's latest DiLink 4.0, and the new version is to optimize the entire UI layout and operation level. On the main interface, the function modules are clearly distinguished, the display of the application icon is also refreshing, and the call of the function is not as complicated as the old version.
In addition, the block area has also been adjusted, using the iconic electronic barrier and arranged around a lot of physical buttons, including driving mode, active safety function adjustment, in the era of large screens, many times the keys are subtracted, and BYD's design is actually more convenient to use.
In front of the barrier is also set up a mobile phone wireless charging function, the bottom also opened up a large volume of storage space, this part of the optimization is still more practical.
In terms of configuration, the upgrade of Song MAX DM-i is very large, with keyless entry/start, holographic transparent image system, DiLink 4.0 intelligent network system, main driver seat power adjustment and other functions as standard, and high-end models are also equipped with electric tailgate, passenger seat power adjustment and other functions.
In terms of safety configuration, active safety functions such as ACC-S&G full-speed domain adaptive cruise, automatic emergency braking, lane departure warning, and lane keeping assist have been equipped, and the richness of the configuration has been greatly improved.
Dm-i hybrid is the biggest highlight
In the past BYD plug-in hybrid car series, the engine equipped with it is often directly fuel version of the power, and there is no corresponding tuning for the hybrid characteristics, and the result is often that the performance is not friendly.
The new DM-i hybrid system has undergone a major upgrade, the engine, the gearbox are all newly designed, and the fuel consumption performance has become the most important consideration.
In terms of structural composition, the hybrid system of the DM-i platform integrates a drive motor, a generator, a large battery, a single-speed direct drive transmission and a 1.5L engine dedicated to plug-in hybrids.
1. The new 1.5L engine, do "subtraction" to achieve 43% thermal efficiency
Thermal efficiency is used to evaluate the economy of the engine, in the current technology of gasoline engine thermal efficiency is generally around 35%-40%, most of the rest of the energy is lost through exhaust, friction, accessory consumption and so on.
In other words, the higher the thermal efficiency, the better the economy, and BYD achieves a high thermal efficiency of 43% through "subtraction".
In the traditional fuel engine, the engine accessories are quite a lot, need to drive the generator through the belt, starter, cooling water pump, air conditioning compressor, etc., these need to be driven by the pulley to consume the engine power, so many wheel systems will naturally produce the loss of mechanical work.
BYD canceled the pulley through electrification, and the accessories such as air conditioning compressors and water pumps used separate electric drives, and the electrification of accessories greatly reduced the burden on the engine, which naturally improved thermal efficiency.
In addition, BYD has optimized the engine compression ratio to 15.5, EGR cycle, engine cooling and heat dissipation, and suppression of knocking, so the overall thermal efficiency of the engine has also been improved.
In terms of power data, the maximum power of BYD's 1.5L engine is 81kW, the maximum torque is 135Nm, and it is in line with the national VIb emissions. The parameters are not outstanding, but don't forget that plug-in hybrid models are mainly motor driven, and the engine power does not need to be too strong.
2. EHS single-speed direct drive transmission
In terms of gearbox, BYD no longer uses the previous 6-speed dual-clutch transmission, and the new transmission structure is considered to be ecVT type. From the structural point of view, EHS single-speed direct drive transmission is composed of an engine, a drive motor, a set of clutches, there is no traditional sense of the transmission structure, most of the working conditions by the motor to drive, is an electrically based hybrid technology.
When the power is sufficient, it is driven directly by the motor, at which point the engine and motor are disconnected.
When the power is low, the engine intervenes, and the engine is responsible for driving the vehicle and charging the battery.
In sharp acceleration, the engine and the motor are connected in parallel to output power and drive the vehicle together; when deceleration, the system switches to a series drive.
At high speeds, the engine is driven directly.
Dynamics: Power like tram, chassis
Although the DM-i hybrid model is mainly economical, in fact, its power is not bad, and the official acceleration time of 100 kilometers is 7.9 seconds, which is faster than many family cars.
In terms of power, because the new hybrid system is mainly based on electric drive, it is the motor power output at the beginning and daily cruise driving, and the motor's innate large torque output makes it very easy for Song MAX DM-i to drive.
In addition, since there is no traditional gearbox, there will be no gear change during the whole driving process, which is very smooth.
In the driving mode, Song MAX DM-i provides ECO, Normal and Sport three modes, ECO and Normar mode hybrid system will be pure electric output priority, power response has a certain cascade, the overall difference is not much.
The motor responds slightly faster in Sport mode, and the engine power is also driven in parallel when the throttle is pressed deeply, and the power burst is more abundant.
Kinetic energy recovery part, Song MAX DM-i is provided with standard and larger two modes, but the actual driving experience of the two kinds of recovery strength difference is not much, there will not be too strong sense of deceleration, and fuel car taxi equivalent.
In terms of chassis, Song MAX DM-i adopts the front McPherson rear torque beam suspension, and the rear suspension uses a torque beam mainly for the third row of seating space in the car, which can obtain a wider lateral space, which is also more common in the same class of models.
On this test drive route, the road is actually not very good, and it just tested the color of the Song MAX DM-i chassis. When encountering some bumps and undulations, this chassis has good toughness, and the suspension rebounds quickly to ensure a certain degree of comfort.
However, when encountering some continuous bumpy road surfaces, its treatment is slightly insufficient, and the isolation of vibration is not enough.
For MPV models, handling is not its strength, easy to open is the main consideration, so the Song MAX DM-i steering is not as responsive as the car, it has a certain blur, and the steering wheel has more laps, so that the turning radius will be smaller when turning or turning.
In terms of steering feel, BYD also provides two modes of ease and sport, and in actual experience, even when the sport mode is in the steering power, it is lighter and easier when driving long distances.
Spatial representation
In terms of spatial performance, Song MAX DM-i mainly has two highlights, the first is equipped with a new cocoa brown snow roof seat, whether it is visual or riding experience is good; secondly, the upgraded roof design improves the head space in the car, greatly eliminating the depressive feeling of the second and third rows of passengers, and also making it more convenient for passengers to enter and exit the third row.
The new car provides a 2+2+2 six-seat layout and a 2+3+2 seven-seat layout, and how to choose it depends on its own population.
Although the design of the "upgrade roof" does not have a panoramic sunroof, the layout of its large-size LED lights and atmosphere lights also makes up for this shortcoming, and the panoramic sunroof is not commonly used in many cases.
In terms of seating space, after adjusting the second row of seats to the right position, the experiencer with a height of 170cm sits in the third row of leg space and has one punch left, and there is not much head space left, but the vision is relatively open.
In terms of trunk space, the space in the third row of seats is relatively limited, and when the third row of seats is reclined, it is very impressive; it should be noted that the second row of seats of the 6-seat model cannot be fully flattened, and the second row of seats of the 7-seat model is supported.
Write at the end
In the full day of in-depth test drive, it can be found that the improvement of Song MAX DM-i is still very large, and the new DM-i hybrid system naturally needs not to be said, almost the same as the driving experience of pure electric vehicles.
Technology configuration and interior space optimization can be said to be another highlight of the new car, the system response is smooth after the car chip is improved, the new UI interface and layout are more handy, and there is a very strong expansion ability, and various APP is not a problem.
The unique upgrade roof is the most special highlight of this new car, and the openness of the car is amazing.
From the perspective of positioning, Song MAX DM-i does not face many opponents, now look at its performance after its official listing. (Transferred from: All Electric)