The world of martial arts, only fast is not broken, but many people often ignore a premise, that is, "next plate kung fu" must be stable, learning martial arts first from zamabu is this truth.
The same applies to cars. Good kung fu comes from good horse steps, good cars also come from good chassis suspension, it must be able to provide sufficient support when the car is cornering, to avoid the situation of left and right swing; and in the face of potholes and bumps, fully filter and buffer the impact of the road surface to ensure that it is sufficiently comfortable.
To achieve this level of attack and retreat, the current first push must be air suspension. Especially for luxury cars, the air suspension has the characteristics of non-linearity and adaptability, and can still maintain the relative stability of the spring load when the car load is constantly changing rapidly, which is the most suitable active suspension type for luxury cars.
However, it is a pity that the current traditional luxury SUVs of more than 400,000 yuan, including BMW X3, Mercedes-Benz GLC and other models, are not equipped with air suspension, and the suspension height is not adjustable, and it is difficult to achieve excellent chassis performance on bumpy roads and paved roads. If you want to have this equipment, you need to go to the Q7, GLS, which is more than 600,000 yuan to be equipped.
What the BBA can't do, who can achieve? Here we have to mention Landu FREE. As a new energy vehicle with a top price of less than 370,000 yuan, Landu FREE is rarely equipped with millions of luxurious and comfortable configurations such as air suspension, Danna audio, and dimmable panoramic sky canopy, which is really eye-catching.
As a pioneer in the popularization of the air suspension industry, Landu FREE can be described as full of sincerity this time.
Other than expensive, there are no other disadvantages?
Even today, in 2022, air suspension is still a very low popularity configuration, is regarded as exclusive to luxury brands' luxury models, and mostly exists in the form of additional money options.
How to understand air suspension? In fact, it is very simple, we know that the car suspension is composed of elastic elements, guide mechanisms and shock absorbers, etc., and individual structures also have buffer blocks, lateral stabilizer bars and so on. Among them, the elastic element includes leaf springs, gas springs, coil springs and torsion bar springs and other forms.
In general, in order to achieve a balance between cost and comfort in ordinary family cars, most of the elastic elements of the suspension are coil springs and torsion bar springs. The air suspension is to replace the ordinary coil spring with an air spring system, and add a set of electronic control systems and air pumps.
Compared with ordinary coil springs, the electronically controlled air spring system can adjust the height of the spring in real time according to different road conditions and car usage scenarios, ensuring that it is in a smooth and comfortable driving state at all times. For example, in high-speed road conditions, timely lower the height of the suspension, reduce the center of gravity of the chassis, to ensure better handling; in the face of potholed road, control the chassis lift, improve the passability of the vehicle.
In the past, limited by technology and cost control, air springs will always have a short life and a high failure rate due to leakage, material and other issues. The pursuit of reliability and durability, it will inevitably make the cost increase significantly, so the air suspension of this very practical configuration has become "unattainable", the standard air suspension system of luxury brand models price are more than 700,000 yuan, optional also from 500,000 yuan.
On the road to the popularization of new technologies, there will always be people willing to be pioneers, Lantu FREE is one of them, more than 300,000 yuan can be equipped with air suspension, in addition to the extended range version of 4.5 seconds / pure electric version 4.7 seconds to break the hundred power output, extended range version of 860km / pure electric version of 505km NEDC mileage (extended range version), called the current car market a clear stream.
The pioneer of the popularity of the hanging industry, how strong is it?
The breakers are always accompanied by doubts, especially in the cognition of many users, the chassis technology content seems to be far less than the engine and gearbox, and the chassis of similarly priced models of the same level is always the same, and the actual feeling seems to be almost the same.
Change the air suspension, you can be one level ahead of the experience level? Landu FREE said that this is really the case.
In the era of electrification, electric vehicles have higher requirements for the stability of the chassis system, and due to the existence of large-weight batteries, the body weight of new energy vehicles is generally between 2.6 tons and 3 tons or even higher, and the axle load of the single vehicle is getting larger and larger, and the load of a single spring is also increasing.
If the traditional coil spring is used, the diameter of the wire must reach a larger size, the comfort will be greatly reduced, and the air suspension with innate technical advantages will be the best answer for new energy vehicles.
Taking Lantu FREE as an example, this set of air suspension matches five driving modes of economy, comfort, high energy, outing, and customization, and the 100mm adaptive height and height of the upper and lower can be adjusted, which is enough to cope with various complex road conditions for commuting and traveling.
For example, in the comfort mode, at this time, the air suspension is centered, and the shock absorber is centered up and down, ensuring sufficient margin, and there can be sufficient compression stroke in the face of uneven road surface, and the comfort is better.
In high-energy mode, the air suspension stroke is reduced, thereby reducing the chassis height, making the vehicle's center of gravity lower, ensuring the stability of high-speed cornering and calmly coping with the next intense driving.
The outing mode is more considered by passing, adjusted by air suspension, at this time the chassis height reaches 213mm, the ground clearance is much higher than most household SUVs, through the ditch ridge is not a problem.
In contrast, the coil spring experience of traditional non-air suspension models is much worse. For example, when the single driving load is less, the shock absorber stroke is at the highest point, the upper stroke margin is less, and the deflection frequency is perceived in the face of large bumps; in the full load state, the lower stroke of the shock absorber becomes shorter, the large bumpy road surface will have a hard and hard feeling, and the chassis response will be sluggish.
Not only that, Butra FREE also gives full play to the advantages of air suspension and innovatively develops the welcome mode. When you unlock the vehicle into the Landu FREE, the welcome mode is turned on, the door handle automatically pops out, the air suspension is automatically reduced to the minimum, and the chassis height is reduced to a minimum of 113mm, which is convenient for the elderly and children to get on the car.
After the starting vehicle speed reaches more than 5km/h, the body height will automatically increase to 163mm in the economic mode, making the whole process more intelligent and convenient, which is an experience that more than 400,000 yuan of traditional luxury models cannot do.
Master the core technology, Lantu takes the lead
If the promotion of a certain technology is only a cost obstacle, then it can be basically considered that the prospects of this technology are very good.
Air suspension is an example. Today's young users mostly want to enjoy a different personality in a car, and the need for suspension is completely different when they want to ride comfortably or drive intensely. Even in the future era of autonomous driving, users also expect a car to be able to remain completely stable at any time.
As far as the current technology is concerned, air suspension is obviously the best solution to meet the needs, and its "expensive" shortcomings are gradually being "overcome".
In the vigorous development of the new energy vehicle market, the new forces of domestic car manufacturing and traditional independent car companies are gradually moving towards high-end, holding the user-enterprise mentality of providing consumers with a more comfortable driving experience and a higher "cost performance", and popularizing the air suspension system.
The air suspension consists of four parts: air spring, shock absorber, air supply unit and control unit (sensor and ECU), of which the first three core components are the most technically difficult, and only Continental, ZF's WABCO and Zhongding Group's AMBK can currently be supplied.
Other domestic suppliers are also speeding up the pace of research and development, such as Kong Hui Technology, which can provide other supporting equipment to automobile manufacturers other than air supply units, and Landu FREE is a complete set of air suspension provided by Zhongding Group and Kong Hui Technology.
At present, the air suspension system components of passenger cars are still dominated by foreign suppliers, and Lantu is the first vehicle enterprise in China to independently master the core technology of air suspension, mastering several core technologies of air tightness, durability, reliability, and vehicle dynamics, breaking the monopoly of foreign technology.
In order to fully verify the reliability, the air suspension on the LANDOU FREE has undergone up to nine months of development and verification, has undergone 150 different matching schemes, and passed 70 rounds of different tests, the gas spring up and down vibration 5.6 million times, far exceeding the industry standard of 3 million to 3.6 million times for ordinary manufacturers. This means that its cycle life is theoretically the same as that of a complete vehicle, which means that the air suspension will not fail before the life of a vehicle is reached.
Bell description
Instead of struggling with why you set out, you should keep the road under your own feet. Obviously, the Chinese auto market needs a pioneer, and Lantu FREE is one of them, surpassing BBA with its own strength and pulling the air suspension down to the price range of more than 300,000 yuan. Behind this is the huge force released by the full integration of Dongfeng's more than 50 years of car-making technology and the advantages of the whole value chain.