Distronic Distance-Pilot Controller Unit, Component Description - GF30.30-P-3218GWM
Model 463 As Of Model Year 2019
With Code EM4 (Driving Assistance Package)
Shown on model 463
Location
The DISTRONIC Distance-Pilot electric controller unit is located in the middle upstream of the cooler.
Tasks
The DISTRONIC Distance-Pilot electric controller unit assesses the traffic situation ahead of the vehicle through evaluation of the data from the integral long range radar. The detected data serve to implement the following functions:
- Cruise control
- Variable limiter (except code ZU8 (national version USA))
- Permanent limiter
- Active Brake Assist
- Automatic distance control
- Lane change
- Speed control
- Going back into a lane/person in the front regulation
- Automated Stop Vehicle
The DISTRONIC Distance-Pilot electric controller unit compares the permanent target and actual values with each other and evaluates the respective driver requirements. In order to implement the automatic distance and speed control the DISTRONIC Distance-Pilot electric controller unit sends the respective requests for acceleration, deceleration and switching via the chassis FlexRay (Flex E) after evaluation of all input factors.
This means that the DISTRONIC Distance-Pilot electric controller unit has the following tasks:
- Reading in input factors
- Evaluation of input factors
- Transmission of initial parameters
Reading in input factors
The DISTRONIC Distance-Pilot electric controller unit receives the following input signals via chassis FlexRay, among other things:
- Switch Distance Pilot DISTRONIC on/off
- Switch Active Brake Assist on/off
- Operating condition for engine/drivetrain
- Driving stage engaged
- Parking brake status
- Engine drive torque
- Brake torque
- Acceleration/yaw rate
- Driver request via the cruise control resume switch (S163/1s19)
- Driver request to overtake through setting the turn signal
- Vehicle speed/acceleration
- Steering wheel angle
- Brake pedal position
- Accelerator pedal position
- Switch position of combination switch (S4)
- Object recognition data from mono multifunction camera (A40/11)
The resulting functions are described in the respective function descriptions (see also block diagram or function schematic).
Evaluation of input factors
The input factors are evaluated by the microprocessor and the corresponding assembly parts are actuated.
The evaluation of the object recognition data from the mono multifunction camera (data fusion) is performed by the Distance Pilot DISTRONIC electric controller unit.
Transmission of initial parameters
The DISTRONIC Distance-Pilot electric controller unit sends the following initial parameters via the chassis FlexRay, among other things:
- DISTRONIC Distance-Pilot system status
- Object information
- Request to increase/reduce engine torque
- Request to increase/limit gear range
- Request to increase/reduce braking torque
- Request to emit warning tones, system or warning messages
- Initiate request for PRE-SAFE® measures
Structure
The DISTRONIC Distance-Pilot electric controller unit contains the following assembly parts:
- Radar sensor
- Control unit
Properties of the radar sensor:
- Detection angle of radar sensor: s = 0 up to 160 m with a detection angle of ∠ = 45°
- GHz radar sensor according to the pulse-Doppler principle for independent measurement of distance and speed
The DISTRONIC Distance-Pilot electric controller unit must be newly adjusted after exchange (e.g. after an accident repair) using the integrated "service adjustment mode".
| Wiring diagram for DISTRONIC Distance-Pilot controller unit | PE30.30-P-2107-97ZHA |