TU-TESL

• 22

With the development of the new energy trend in the automobile industry, as the number one player of luxury brands, they once again challenge the new energy field. That sentence "electric, Mercedes Benz henceforth" is enough to confirm the determination and confidence of the car inventor in the electrification. As the number one killer of Mercedes Benz, EQ in EQC is not only a car series code, but also a brand new travel brand. In Mercedes Benz's new energy blueprint, it will be divided into three parts: EQ, EQ power and EQ boost. EQ carries the pure electric products of Mercedes Benz, EQ power will support the plug-in hybrid technology of Mercedes Benz, and EQ boost will greatly improve the fuel economy of vehicles through 48V intelligent motor. EQC, as the first practitioner of this concept and the first pure electric model of Mercedes Benz, naturally shoulders the critical attention of all. However, we still feel the surprise brought by this auto giant in this actual measurement experience. Let's start from the beginning. How does EQC look? When the new car arrived, the first thing I noticed was the appearance. EQC followed the design language of Mercedes Benz generation EQ concept car and the whole car was round and full. The front face does not use the currently popular fully enclosed medium network, but the active closing grid, which can cooperate with the electric drive and the thermal management system for auxiliary heat dissipation when necessary. The design that doesn't go with the flow, on the contrary, makes EQC stand out from a large "mask face". The raised lines at the top are embedded in the front engine hood to create a muscle sense of overbearing exposure. The through type daytime running lamp (LED) outlines the arc angle contour of the headlamps on both sides, and lights up the upper edge of the grille. The large-area U-shaped bright black panel on the outside is connected with the headlamp groups on both sides, among which there are blue decorative strips to highlight the identity of its charging car. The overall proportion of the body of EQC is similar to that of Benz GLC, with dimensions of 4774 / 1923 / 1622mm, wheelbase of 2873mm and curb weight of 1800kg. The body with long side and low pressure gives a very dynamic visual effect. The EQC nameplate of the fender indicates the properties of its new energy vehicle. However, it is a small pity that the door handle still adopts the traditional classic design instead of the popular concealed door handle. At the same time, EQC also has AMG line sport kit models to choose from. Careful friends should have noticed that this EQC in our hand is equipped with 19 inch AMG style double five spoke light alloy wheel hub (EQC 400 4matic creation version is 20 inch), which is flush with the wheel arch. It adopts Pirelli score Verde. Considering the performance and energy consumption performance, the tire sizes of the front and rear wheels are different. The front wheel size is 235 / 55 R19 and the rear wheel size is 255 / 50 R19. Compared with the front face and side body, the tail shape of EQC is very simple, even a little simple. Apart from the through tail lamp and silver rear tail bar, there are no other highlights. It should be noted that both charging ports of EQC are set at the left rear of the vehicle. Compared with other electric vehicle brands, you will see more shadow of fuel vehicles in EQC. It continues many iconic elements of Mercedes Benz brand. The advantage is that it can get more recognition and acceptance from consumers. Maybe this is the "design inertia" of traditional large factories. Is the interior luxurious enough? As a benchmark of luxury brands, Mercedes Benz never let consumers down in terms of interior quality. In EQC, Mercedes Benz's through screen design perfectly integrates the central control screen with the instrument panel, which is covered with black soft leather as a whole, and decorated with ancient copper decorative lines, showing the advanced texture. Compared with the family style interior before Mercedes Benz, EQC has also added many innovations in details, such as the air conditioner outlet adopts a new model, comand's control area cancels the old knobs, and the touch panel becomes thinner and larger. In fact, all the changes are aimed at the aesthetic and taste of young people. The three spoke round steering wheel in the driver's seat supports four-way adjustment, and multiple intelligent touch buttons are integrated on both sides. If you have used the BlackBerry 9780 series of friends, you will feel friendly to the middle direction key. The double 10.25 inch instrument panel and the central control screen behind the steering wheel are connected as a whole. On the left side is the speedometer and energy information table, and on the right side is the interaction between multiple vehicles and multimedia. EQC can provide three different UIs according to different driving modes, together with blue and purple instrument backlight and atmosphere light. On the basis of creating a sense of luxury, EQC has further deepened its scientific and technological attributes. How about driving? The EQC is based on the Mercedes Benz MHA platform. The front and rear axles are equipped with an induction asynchronous motor. The total power of the system is 300kW, the maximum torque is 730n · m, and the acceleration time of 0-100km / h is only 5.1 seconds. In order to achieve a balance between performance and endurance, the front and rear dual motors on EQC can make different responses according to different driving conditions. In terms of control logic, the motor of front axle pays more attention to economy, and the motor of rear axle pays more attention to power performance. When the vehicle is in extreme acceleration or special road conditions, it can realize intelligent electric four-wheel drive. In terms of driving mode, Mercedes Benz EQC can provide four options, namely, energy saving, comfort, sports and personalization (customization). The difference between comfort and sports mode is mainly that the response of the vehicle to the accelerator pedal is different. Under the same throttle opening, it has different power output and torque response. In the motion mode, the vehicle's feedback to the accelerator pedal is very sensitive and the power is on call, but it is not as abrupt as the motion mode of other models, and the whole adjustment is very linear. The comfort mode is more gentle, giving you as much power as you step on it. It's like butter on toast. It's also the most comfortable mode for daily driving. What's more interesting is the energy-saving mode. In this mode, the accelerator pedal becomes a segmented travel. When you step on about 40% of the travel, you will feel that the pedal seems to have touched the bottom, but in fact, as long as you apply a little more force, you can continue to step on the accelerator pedal to get more power. Obviously, the purpose of this setting is to help the driver better energy-saving driving. The final personalized mode is user-defined mode. Users can set options such as power output, steering force and ESP body stability independently to meet the driving needs of different drivers. As mentioned earlier, under different driving conditions, the front and rear motors of EQC also correspond to different output logic. In most cases, the EQC will mainly drive the front wheel of the motor before, which can reduce energy consumption and obtain longer endurance mileage; when the vehicle needs more power or the ground is wet and slippery, the rear motor will start immediately, forming a four-wheel drive structure; in some special cases, the vehicle will drive the rear wheel. Mercedes Benz has made a clever design for the driving mode, that is, EQC does not give users the opportunity to choose different driving modes, but directly gives the vehicle to judge by itself. If not looking at the energy output diagram on the central control, the switching between different driving modes is almost imperceptible. It encapsulates the complex working principle and gives users the most intuitive and simple interaction, which is smarter than redundant complex options. In terms of kinetic energy recovery, EQC also provides three adjustable strengths: D + (weak), D (medium), and D - (strong). These three intensities can be switched through the shift paddle on the steering wheel: right + gear (reduce the energy recovery intensity) and left gear (increase the energy recovery intensity). In D + mode, the vehicle's energy recovery will almost be completely closed, the vehicle will be completely in the sliding state when the accelerator pedal is released, and the setting of d-mode is also slightly smaller than that of other models. During the process of pedal release and deceleration, there is no It has obvious stall sense of motor reverse pulling. The author thinks that this design is quite practical, because the driver can adjust the recovery intensity at any time according to the road conditions, for example, the driver can directly use d gear when driving normally, and can immediately switch to d-gear when there is a traffic light in front to wait, so as to reduce the speed and recover more energy in the process of braking. In the chassis adjustment, EQC continues the consistent "moral taste" of Mercedes Benz. The suspension is neutral and soft. It can filter the fine bumps very well. In the face of some big potholes and potholes, the suspension has strong support and full toughness. Good chassis texture with smooth power output of motor, driving comfort fully reflects the high quality of Mercedes Benz. Of course, EQC is not perfect either. For example, its adjustment in braking is not very positive. Although the brake texture is linear, the soft suspension makes EQC nod easily in case of emergency braking. From the test data, the braking distance is not very ideal. The measured braking distance of 100-0km / h of EQC is 40.35m, accompanied by obvious nodding phenomenon, which can only be regarded as the right way: as mentioned earlier, EQC is equipped with an induction asynchronous motor at the front and rear axles, with a total power of 300kW and a maximum torque of 730n · M. in our all electric measurement, EQC's 100 meter acceleration performance reaches 5.79s, although the power is not strong, it is sufficient Enough for daily use: is EQC's endurance real? Endurance is a topic that every electric vehicle can't get around. EQC version uses a soft bag, which is provided by. The battery pack contains 384 cells, with a total capacity of 79.2kwh, a battery energy density of 128wh / kg, and a NEDC range of 415km. In order to ensure the performance of the battery in extreme environment and improve the charging speed, the battery pack of EQC also carries a liquid cooling temperature control system, which can adjust the cooling condition of the battery according to the navigation path. If the battery is planned to charge the battery halfway, the system can also adjust the battery temperature in advance to achieve the best charging temperature. In terms of charging speed, EQC's slow charging power is 7.4kw, which takes about 12h. Fast charging supports a maximum charging power of 90kw, which can be charged from 10% to 80% within 40min. The fast charging interface is located at the fuel filler of traditional vehicles, while the slow charging interface is located at the right rear bar. This time, we measured the comprehensive endurance of 100 km city and 100 km high-speed endurance of EQC respectively: the air temperature on the day of endurance test was 35 ℃, and we set the air conditioner to 23 ℃ and 2 wind volumes. Comprehensive endurance we start from Panyu pick-up point, pass Haizhu Yuexiu, then cross Tianhe District, directly to Luogang, keep driving on the urban road as far as possible halfway, with a total mileage of 100 km. Before departure, the power consumption is 100%, the hourly power consumption is 75%, and the actual driving mileage is 100 km. According to the calculation, the measured endurance mileage of EQC is 400 km, which is within a reasonable range compared with the nominal 415 km. It should be noted that EQC's endurance is real-time, and the remaining endurance will be calculated according to the current driving habits and settings of the vehicle. For example, if we turn on the air conditioner and turn off the air conditioner, the endurance will be a difference of dozens of kilometers. For high-speed endurance, we drive 50 kilometers from shangguanghui Expressway in Tianhe District, Guangzhou, and then turn back. We test 100 kilometers in total: when the weather temperature is about 36 ℃, the air conditioner is 23 ℃, and the air volume of the air conditioner is 2. The average speed of the whole journey is about 70 km / h, and the battery before departure is 100%. When the test is completed, the battery margin is 73%. It can be inferred that the high-speed endurance of EQC can reach 370 kilometers. For a model with a endurance of 415 kilometers of NEDC, It's a surprise. There are two points about EQC's endurance performance: first of all, we should boast that EQC's real-time algorithm is very accurate, and the error between the actual mileage and the meter display data is very small. The advantage is that the driver can trust the meter display data without panic, which is more sincere than the "happy meter" of some domestic models; lack of