Description
Added on the 09/10/2020 07:49:11 - Copyright : Auto Moto EN
Animation of the drivetrain construction, twin motor and coolant circuit of the Audi e-tron S Sportback.Combined electric power consumption in kWh/100 km: 27.6 - 27.5; combined CO2 emissions in g/km: 0 Information on fuel consumption and CO2 emissions as well as efficiency classes in ranges depending on the tires and alloy wheel rims used.
For an accurate calculation of the current range, the algorithm supplements recent consumption data with additional data from the Audi Q8 e-tron route planner. This means the system considers the weather, traffic conditions, and topography along the planned route, whilst also providing preference to high-power charging (HPC) stations to minimize charging times.
The electric all-wheel drive builds on the intelligent networking of numerous control systems that ensure the typical quattro properties of high traction and driving stability. Important network elements include the four-stage electronic stabilization control (ESC) system and the power electronics, which interact to help balanced handling.
The electric all-wheel drive in the Q4 e-tron top models has an asynchronous motor (ASM) on the front wheels that can rev at up to 14,000 rpm. It is installed coaxially and has combined cooling with coolant and oil. The principal advantages of the ASM are its short-term overload capacity and the minimal drag losses when it is inactive – these are important because the front motor does not contribute to the drive in the majority of driving situations for reasons of efficiency.
In order to improve efficiency, only the rear electric motors are engaged as long as the Audi e-tron S2 and the e-tron S Sportback are operating in normal driving mode. The front electric motor flashes into action when the driver demands more performance, or predictively before traction subsides.Electric all-wheel drive is now enhanced with electric torque vectoring: Each of the rear electric motors sends the drive torques directly to the respective wheel via a single-speed transmission; there is no more mechanical differential. Need-based regulation takes just milliseconds and can manage very high drive torques.Drivers experience the excellent agility and traction of the electric S models in particular when challenging them on curvy roads. Their character has a stronger emphasis on the rear end and is even sportier than that of the technical basis. If the ESC stabilization control is set to “sport” and the Audi drive select dynamic handling system is set to maximum performance in “dynamic” mode, the drive layout facilitates a high level of transverse dynamics and, upon request, controlled drifts as well. When approaching the physical limit, the unloaded front wheel on the inside of the curve is decelerated slightly via the wheel brake to prevent slip and further refine handling. The sharp dynamism, high level of precision, and uncompromising safety are based on the close networking between all control units that manage the drive and suspension systems.
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