Volkswagen 4MOTION basic structure and principles
First, we must be clear with everyone: 4MOTION for the general public, in fact, just like the Audi quattro for the same, is merely a registration trademark, has not it clear that a mechanical structure. So the name of public four-wheel drive vehicles can be called 4MOTION, but the core technology is not the same, not the same off-road.
4MOTION history
In 1986 Volkswagen took the lead on the GOLF models equipped ldquo; syncrordquo; 4Motion four-wheel drive system is the predecessor of today, when the silicone oil viscous coupling as a limited slip transmission.
In 1998, the introduction of the Swedish company Volkswagen Haldex coupling, using from Haldex art limited slip wheel-drive system is named 4MOTION. With the high degree of electronic technology, compact structure, excellent characteristics become the core of Volkswagen’s four-wheel drive technology.
launched in 1986 Volkswagen Golf syncro is the first production car equipped with a four-wheel drive system 4MOTION models, after which the public 4WD expanding family. We are familiar with the import MAGOTAN (B6) 3.2, such as the Phaeton and Golf R models are used at all levels of the four-wheel drive mode.
“Volkswagen Golf syncro is the first production car equipped with a four-wheel drive system 4MOTION models.”
“Volkswagen’s four-wheel type is very rich.” [123 ]
in 2002, after successive years of the launch of the Touareg and the 2007 Tiguan, Volkswagen’s SUV models also officially joined the ranks. Equipped with four-wheel drive system, so that by the vehicle and the handling has improved.
4Motion core technology mdash; mdash; Haldex center differential
Haldex center differential has developed into a multi-disc clutch differential control system, by mechanical means and electronic control the hydraulic system interaction to achieve the purpose intelligent distribution of torque. The multi-plate clutch according to different models arranged in different positions, some near the axle differential, some similar to the transmission method Audi blend.
The principle is similar clutch manual transmission car, but the pressing force between the friction member by a spring force into oil pressure. Basic structure: an input shaft end radially fixed by a spline of the clutch plate; an output shaft molded integrally with the housing, the inner housing is also mounted the multi-plate clutch plates. The torque distribution is achieved by the action of the hydraulic pressure of the clutch plate, the level of hydraulic pressure determines the magnitude of the torque distribution, and the hydraulic pressure is generated by the ECU controls the solenoid valve. With this smart guy ECU, as to when and where the number of torque distribution to each wheel, naturally easy.
“is arranged in open-wheel front differential of the Haldex multi-plate clutch center differential,”
In view of the complex between Audi and Volkswagen relations, 4Motion which both the core technology and quattro four-wheel drive system uses specific data models to be.
As can be seen from the table, not all systems are quattro central Torsen differential to the core, the transverse engine for TT, A3 although marked ldquo; quattrordquo ;, but the essence is 4Motion; Phaeton same image, so turui longitudinal engine models, which essentially 4Motion quattro.
4XMOTION 4XMOTION second generation Touareg 3.0TDI diesel component models can optional. The optional package called ldquo; TerrainTechrdquo; all-terrain technology package, but this requires the installation of Volkswagen factory to construction work, because it involves some changes to the core of the core technology.
4XMOTION using the four-wheel drive configuration turui old, the center differential and using the same large Cayenne electronically controlled multi-plate clutch structure, and increasing the electronically controlled clutch-type multi-plate central and rear differential lock, it is possible 100 percentage lock, climbing capacity 45deg; (second generation Touareg 4MOTION used to 31deg;). There are five modes: Highway mode, off-road mode, low mode, additional locking center differential, additional rear axle differential lock. From the structural point of view 4XMOTION four-wheel drive is very powerful, and its off-road performance than ordinary 4MOTION structural strength a lot.
“large-scale use of the electronically controlled multi-plate clutch center differential 4XMOTION”
we can understand: second on behalf of the Touareg comes standard with 4MOTION (Torsen use), TDI diesel version available as an option 4XMOTION (multi-plate clutch), and this 4XMOTION version of the new Touareg, in fact, the infrastructure or the use of the previous generation core technology.