The first shot of CMA Evo platform talks about the technical highlights of Linkke 08.
[car home reveals the new car technology] The Next Day design language, the shape of dawn daytime running lights, frameless rearview mirrors, frameless doors, (|) This new car was amazed when it was unveiled. The Nordic design style is superimposed with the popular design elements in China’s new energy era, and Linke 08 can instantly capture the attention of consumers. Under the beautiful appearance, the Lectra 08 is also the first model based on CMA Evo platform, which is equipped with a brand-new three-speed hybrid system with a pure battery life of up to 245km. Today, let’s take a detailed look at the black technology on the Lectra 08 to see if it can become a new car with both value and strength.
● Lectra’s platform strategy
Lectra’s platformization can be traced back to 2012-2013, when Lectra cooperated with Volvo to develop the CMA platform.
As the platform of the previous generation, CMA platform can also support the development of hybrid vehicles, but it is essentially a platform optimized for fuel vehicles. At the same time, its on-board network architecture is gradually becoming old for the China market where the vehicle networking is rapidly changing. In addition, the CMA platform is more in line with European thinking, with extreme emphasis on sports attributes, driving texture and handling performance, which somewhat deviates from the needs of consumers in China.
CMA Evo platform is the successor and upgraded version of CMA platform, which has been comprehensively improved in chassis performance, new energy attributes and architecture security. At the same time, the new platform has been further developed to meet the needs of customers in China, such as giving more consideration to daily driving comfort and handling performance during intense driving.
● A more "inductive" hybrid system has a good energy consumption performance.
To talk about CMA Evo platform, the first thing to do is to talk about the hybrid system equipped with a 1.5T engine and a three-speed gearbox on the Lectra 08.
Matching with the engine is a special hybrid gearbox with two motors in series-parallel configuration and three-speed transmission mechanism. This hybrid system on the Lectra 08 is officially called "EM-P Super Extended Range Electric Scheme" (hereinafter referred to as "EM-P"), which can be said to be completely different from the "EM-P" hybrid system on the Lectra 01, and the third gear is their only common point.
The reason why EM-P adopts this structural design has a lot to do with the product definition of Link 08. Linke 08 is a super extended-range concept, which means that it hopes to show a stronger pure electric driving sense than the traditional plug-in hybrid vehicle, have a better performance of power loss than the traditional extended-range hybrid vehicle, and eliminate the battery life anxiety of pure electric vehicles.
On the other hand, compared with the extended-range hybrid system that only supports series mode, EM-P system supports engine direct drive, and the direct drive mode has three gears, which is beneficial to reduce fuel consumption during high-speed cruising, especially in the case of power loss, and the direct drive mode will be more efficient than series mode. At the same time, the low gear can amplify the engine torque, which will come in handy in off-road extrication.
In terms of pure battery life and fuel consumption, the LEEK 08 two-wheel drive and four-wheel drive models correspond to three CLTC pure battery lives of 120km, 220km and 245km respectively. Among them, the two-wheel drive model corresponds to 120km and 245km endurance, while the four-wheel drive model has only 220km endurance. The fuel consumption of the two-wheel drive version is 5.5L/100km, and that of the four-wheel drive version is 6L/100km, which has certain advantages compared with BYD Tang DM-i(5.5-5.85L/100km) or DM-p(6.5L/100km).
● Chassis optimization for new energy vehicles.
Linke 08, which is derived from CMA Evo platform, has carried out a number of optimization and upgrades to the chassis in view of the large mass of new energy vehicles. The new car adopts DP-EPAS electric power steering system, and its power-assisted motor is located above the steering gear. By adopting high-power power-assisted motor to cope with the improvement of the kerb quality of new energy vehicles, a better and lighter steering feel can be obtained.
The EHB brake-by-wire system on Link 08 has the characteristics of fast response and excellent pedal feeling. Moreover, the pedal feel can also be personalized, which is beyond the reach of the traditional vacuum brake booster system.
However, compared with the pure European car tuning idea of LEEK 01, LEEK 08 has done more consideration on comfort to satisfy the discerning China consumers. For example, the initial stage of the suspension system is softened, so that the chassis can better resolve the vibration caused by road undulation during daily driving, and at the same time, the handling performance is taken into account by maintaining the support strength of the middle and rear stages of the suspension.
After careful adjustment, the ordinary suspension system of Linke 08 has achieved extraordinary results, the dynamic roll and pitch of the vehicle have become smaller, and the elk test score can reach 80.6km/h, which can be said to bring the suspension performance of this pre-McPherson+rear E-type multi-link structure to a quite high level. Linke 08′ s efforts in engineering design won two awards in one fell swoop, namely, Top Ten Chassis in China in 2023 and Best Handling Award in 2023, which was recognized by the industry.
● The pursuit of safety never stops.
For many years, Volvo Cars has been a leader in the field of automobile safety. After coming to Geely, Volvo’s persistence and persistence in safety for many years have also been passed on to the products of Lectra.
The battery pack of Link 08 is connected with the car body by bolts, which further improves the torsional rigidity of the car body. At the same time, the body frame protects the chassis. The battery pack frame beam and the seat beam form four force transmission paths, which can reduce the collapse of the car body in the side column collision accident.
In order to cope with the conventional side impact, a CBS superelastic honeycomb filling block was placed inside the Lingke 08 sill beam, which was heated during the body painting and baking process to form a stable and high-strength structural filling cavity, which can effectively absorb the side impact energy and has a higher degree of lightweight than the steel structure.
Linke 08 adopts 7-series aluminum alloy "Ri"-shaped cross-section front anti-collision beam, and its bearing capacity is increased by 30% compared with the "I"-shaped anti-collision beam. The vehicle width ratio of the anti-collision beam reaches 0.7, which can effectively improve the performance of vehicles in small-scale overlapping frontal collision accidents.
In terms of battery safety, the LEICK 08 battery pack based on CMA Evo platform has passed more than 100 battery pack-level tests, more than 80 items more than the national standard, of which 6 items far exceed the national standard, and it can be achieved that a single battery cell has no open flame for 24 hours after thermal runaway. From the configuration table information, we can know that the batteries used by LEEK 08 come from two well-known battery suppliers, Contemporary Amperex Technology Co., Limited and Honeycomb Energy, and the performance, stability and safety of the products are guaranteed.
● Full text summary:
The wave of automobile electrification is unstoppable, and CMA Evo platform is the starting point of Linksys in the field of new energy. According to the technical characteristics of Linke 08, CMA Evo platform has obviously improved its compatibility with new energy technologies, chassis performance and safety performance compared with previous platforms. The CMA Evo platform will also become the main platform for new models in the future. Judging from the level and pricing of Link 08, it will challenge the popular BYD Tang DM-i/DM-p model, and another competition to challenge the popular cars is about to start. Let’s wait and see who will win! (Photo/Text/car home Chang Qinglin)