Mercedes-Benz S, Audi A8L, BMW 7 Series, and air suspension are still the equipment of the rich class, but 60 years ago, the French people with wide brains have realized it on DS 19 and DS20. From today's perspective, the designs of Peugeot, Citroen and DS seem to have only images left, but after traveling through time and space, the French creative works once made Rolls-Royce call it Big Brother. ?
The first generation Rolls-Royce silver? Friends in Guangdong should know that Adam Cheng and Guan Haisan in Laughing at the Wind and Clouds and Alone are all sitting in this car, but the rich people sitting in it probably don't know that it is a set of hydraulic active suspension of ds, which helps them filter vibration and improve vehicle comfort. Here's the thing. Silver? Before Shadow, they tried their best to find a breakthrough, in which the suspension directly bought the patent of active hydraulic suspension from Citroen to replace the previous integral bridge suspension. ?
The revelation of magic carpet suspension is blinding. First of all, there is a pull rod in the car that can adjust the height of the car itself, and different heights appear in different positions, just like the current air suspension is operated by buttons, but the active damping function is realized by hydraulic pressure, but the structure is extremely complicated. ?
The shock absorption mechanism composed of springs and shock absorbers constitutes a strange hydraulic shock absorption system, each car has four, and its "brain" is located in the front of the car. In addition to the liquid storage tank, there is also an engine belt hydraulic pump device, through which the dynamic compensation when the car body rises, falls and vibrates is regarded as the brain, which is a concept with modern air suspension ECU. ?
Before ECU control, sensors were needed to prompt it, but 60 years ago, sensors were mechanical valves in shock absorbers, and the up-and-down movement of valves was determined by the jump of swing arms. Both oil intake and oil return urge the damping system to apply force to the swing arm in the opposite direction, thus realizing the function of automatic suspension. Its concept and effect is the magic carpet suspension now. Of course, the control accuracy and suspension response speed are not as good as those of electronics, so it is impossible to detect road conditions in advance. It is different from what we are talking about active suspension now, but it does not hinder the creation of a new chapter in automobile suspension system, which belongs to the "alien technology" of that era. ?
This suspension will be gradually lifted in the future. There is a simple reason. At the same time, the failure rate is high and the structure is complex. If it's broken, it's still expensive except for no one to repair it. Today, active suspension has become more and more homogeneous, but as its originator, DS still has advantages, such as cheap, DS7 top with 320,000, which is considerable. ?
The module consists of 1 camera, 4 fine-tuning sensors and 3 accelerators. The camera is used to analyze and scan the real-time road conditions from 5 meters to 20 meters ahead, and the fine-tuning sensor and accelerator are used to provide positioning and instantaneous dynamics, and adjust the stiffness of the suspension according to these signals. It's cheap for a reason. There is still a difference between the shock absorber and the air suspension of BMW Benz. They still insist on using hydraulic shock absorbers, but the oil pressure is controlled by adjusting the battery valve inside the MCU, and the adjustment of vehicle suspension is completed within 15 milliseconds. Recently, the news about DS9 in China is also extremely hot, and the suspension form is estimated to be similar to that of DS7. ?
60 years ago, DS built a damping system that even Rolls-Royce envied. This is the work of Citroen in its heyday. After 60 years, the French car represented by PSA is no longer beautiful. Even as a luxury positioning, DS is far from German. However, it is this characteristic of not following the trend that makes the auto market with such a serious homogenization have more topics, and at the same time, it is highly respected by them. When the sales volume is so unbearable, there is still this persistence and persistence.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.