Benz

A car brand known almost all over the world. Mercedes-Benz was originally formed by the merger of two companies, Carl? Ben Ci (Karl? Mercedes-Benz) was founded by Mercedes-Benz & 1883; Cie。 Cars, and gottlieb? Dmg (Daimler-motoren-Gesellschaft, Daimler Engine Company) was founded by gottlieb daimler in 1890. Later, when World War I broke out and the economy deteriorated, the two companies formally merged on 1926. Since then, the Mercedes-Benz brand has been fully launched.

The name 4MATIC of Mercedes-Benz four-wheel drive technology comes from the combination of four-wheel drive and automation. 4MATIC was first put into use in W 124 1986? In the e-class car system.

Figure: Mercedes-Benz W 124 E class models adopt 4MATIC technology for the first time.

Today, Mercedes-Benz's 4MATIC four-wheel drive technology has undergone two generations of updates and changes. At present, the technologies used are all the second generation, which is qualitatively improved compared with the first generation. The first generation of 4MATIC technology is mainly designed for off-road, and the most typical example is the G-class model of Mercedes-Benz. Because of the outstanding performance of 4MATIC technology, the G-class model is the guy with the strongest off-road performance in the Mercedes-Benz family.

In the early 4MATIC four-wheel drive technology, the rear wheel drive was generally used when the car was driving straight. At this time, the center differential will transfer all power to the rear wheels. When the car turns a corner, the rear wheel begins to slip, and the on-board computer will automatically engage the central differential. At this time, one-third of the power will be transmitted to the front wheels. If the power of the front wheel is not enough to make the rear wheel get rid of skidding, the on-board computer will automatically lock the multi-plate clutch, so as to transfer the power to the front and rear axles at a fixed ratio of 50%: 50%, so that the power of the engine can be evenly distributed to the four wheels to help the rear wheel get rid of skidding.

Photo: Mercedes-Benz 4MATIC logo.

The second generation of 4MATIC technology not only ensures a certain off-road performance, but also gives consideration to road driving. The design gives consideration to both, and the transmission ratio is constant 45%:55%. In addition, Mercedes-Benz also cited a set of core concepts called "4ETS" technology. 4ETS uses the automatic braking force distribution (EBD) function of ABS to realize differential limit. There is a simple reason. For example, on off-road roads, when one wheel of a vehicle skids, the computer can control ABS to brake the skidded wheel and limit its idling, so that the skidded wheel can get grip, and at the same time, the other three wheels can get enough grip, thus enhancing the passing capacity of the vehicle. Similarly, if three wheels of a car slip, only one wheel can get grip, and 4ETS can also generate braking force on these three wheels to limit their slip, so as to transfer power to the non-slip wheel 100% to get the car out of trouble.

Figure: Mercedes-Benz ML350 with 4MATIC technology.

The second-generation 4MATIC technology mentioned above is considered from two aspects: off-road performance and road driving performance, so it is very important to ensure the safety and handling of vehicles on the road besides making them have certain off-road performance. If the vehicle is driving on a slippery road, it is easy to lose the grip of the wheels because of slipping. The biggest feature of 4MATIC four-wheel drive technology is to ensure that each wheel has the maximum grip, which will make the slipping vehicle regain the grip and effectively control the vehicle in the case of slipping.

Mercedes-Benz's 4MATIC four-wheel drive technology has good off-road performance and road driving performance. But it is precisely because of their consideration that the technology of 4MATIC is not pure enough in off-road performance, and it is still unsatisfactory for some extreme off-road roads. But in general, pure cross-country is only suitable for a few people. For most people, it is enough to spend more time driving on the road or occasionally becoming addicted to cross-country roads. For the needs of this group of people, Mercedes-Benz's 4MATIC four-wheel drive technology is fully competent.