Bericht
door Hans R » 07 okt 2009, 07:04
@Sjef
New all-wheel drive on the Golf R
As standard equipment, the Golf R transfers the TSI’s power to the road via the latest generation of Volkswagen’s 4Motion all-wheel drive system. Compared to the version implemented in the Golf R32, the system underwent significant advanced development. Above all, power transmission between the front and rear axles – especially the all-wheel differential that operates in an oil bath – exhibits clear advances compared to the previous generation. The most important one: Activation of the all-wheel differential no longer requires a difference in speeds between the front and rear axles.
That is because, different than on the previous generation, for the first time an electric pump is used to build pressure. The electric pump supplies oil to a hydraulic reservoir whose working pressure is 30 bar. A control module computes the ideal drive torque for the rear axle and controls, via a valve, how much oil pressure is applied to the working pistons of the multi-plate clutch. The contact pressure at the clutch plates rises in proportion to the desired torque at the rear axle. The amount of torque that is transferred can be varied continuously with the magnitude of the pressure applied to the clutch plates. Compared to the previous 4Motion generation, the system operates independent of slip, since the system’s working pressure is always available. When starting up and accelerating, this prevents spinning of the wheels at the front axle more effectively, since the control module regulates the torque distribution based on dynamic axle loads. In extreme cases, nearly 100 percent of the drive torque can be directed to the rear axle. This results in further gains in active safety and dynamic performance.
En over de ESP en DCC
The electronic stabilisation program (ESP) was also modified. It can be switched to a new Sport mode via the ESP button. During very fast and curve-filled drives – as on a motorsport race course – the ESP system delays intervention, enabling even more responsive handling properties. The electro-mechanical power-assist steering of the Golf R was also given a sportier characteristic. If the sports car is ordered with the optional DCC dynamic chassis control option, the power-assist steering even assumes a specially tuned characteristic for each of the system’s driving modes (Sport, Normal, Comfort).
DCC is hetzelfde als bij de GTI, daar heb ik meegereden maar ik vond er erg weinig verschil in zitten dus heb het niet genomen. Het is wel iets merkbaar natuurlijk en zal op het circuit wel iets uitmaken, het verschil tussen comfort en sport voel je wel (als je oplet)
Of die dwars kan 8) De 130i gaat makkelijker dwars..