Đây là phần tài liệu em đọc về vấn đề này, cái này theo như người trích dẫn trên 1 forum của BMW nước ngoài là được lấy từ BMW data (BMW copyright). Theo tài liệu thì xe có " adaptation to driver type", nhưng không đề cập đến key fob.
Adaptive transmission control
As with earlier automatic transmissions, the 6-speed automatic transmissions offer the choice between a comfort program and a sport program.
The adaptive transmission control (component of electronic transmission control) adapts the shift characteristics of the comfort program and sport program to the driver's wish and the driving situation.
In both programs, the adaptive transmission control changes from a basic map to a performance-orientated map, as required:
• Comfort program in selector lever position "D"
The comfort program is based on 2 maps: The XE map (extreme economy) and the E map (economy).
The EGS control unit normally selects the economical XE map (= basic map). In case of particular demands (e.g. load requirements), the system will change to the performance-orientated E map. If the input signals change in favour of a more gentle driving style, the system will change back to the more economical XE map.
• Sport program in selector lever position "M/S"
The sport program effects dynamic, sporty shift characteristics. In the sport program, there is the basic Smap (sport) and the performance-orientated XS map (extreme sport). If an extremely dynamic driving style is called for, the system will change from the S map to the performance-orientated XS map.
The adaptive transmission control takes the following demands into account:
• Adaptation to driver type
• Driving uphill or trailer towing
• Driving downhill
• Braking deceleration and automatic upshift
• Winter program
Adaptation to driver type
The adaptation to different driver types is done using the following values:
- Kick-fast
If the accelerator pedal is depressed rapidly, the shift program is changed accordingly. This is achieved by the detected accelerator-pedal value being compared with threshold values in the EGS control unit. The result of this comparison is the proposal of one of the two possible programs (XE or E in comfort program, S or XS in sport program).
- Cornering detection
Cornering detection reacts to the vehicle's lateral acceleration with an indirect adaptation to the driver type.
Lateral acceleration is considered an indirect statement of the preferred driving dynamics and does no tcause an immediate gearshift response (shifts when cornering could adversely affect driving stability).
Lateral acceleration is calculated from the signals from the wheel-speed sensors, from the yaw rate and road speed.
- Brake evaluation
The braking action is evaluated in a similar way to "kick-fast".
The braking deceleration is measured and compared with threshold values in the EGS control unit. The result of this comparison is the proposal of one of the two possible programs (XE or E in comfort program, S or XS in sport program).
The driver-type adaptation is restarted each time the vehicle pulls away from a standstill.
