The hybrid management system
The hybrid management system controls the Audi Q7 e-tron quattro's operating states intelligently, flexibly and highly efficiently. The driver can choose between four modes. The electric drive mode prioritises electric driving; in the hybrid mode the hybrid management system itself makes most of the drive selection decisions. In the battery hold mode it stores the available electrical energy, and in the battery charge mode it charges the battery.
The big SUV generally starts electrically. In order to activate the TDI, the driver has to depress the active accelerator pedal, another Audi innovation, beyond a certain resistance point. The point at which the resistance occurs, depends on the hybrid management system's requirements. For the boost, during which both motors collaborate, a pressure point must also be surpassed.
When the hybrid mode is active and the eight-speed tiptronic with integrated electric motor is in the D shift position, the Audi Q7 e-tron quattro will change to the coasting mode as soon as the driver takes their foot off the accelerator. The TDI and the electric motor are then deactivated. In the event that the Audi Q7 e-tron quattro is approaching a slower vehicle up ahead, a roundabout or the entrance to a town the coasting operation will end in favour of a targeted recuperation delay. The traffic situation ahead is recognised using data drawn from the MMI Navigation plus, the front camera and, if fitted, the radar sensors.
When driving in the S shift position and the battery charge mode, the energy recovery will begin as soon as deceleration begins. The driver can influence the degree of recuperation step by step via the rocker switches positioned on the steering wheel. The majority of all braking operations in everyday life are also handled by the electric motor. Above a medium delay there is a crossover and the hydraulic brakes are activated.