DISTRONIC Electric Controller Unit, Component Description - GF30.30-P-3213RR
Model 190
with code 239 (Active Distance Assist DISTRONIC)
Shown up to 30.11.2018
Location
The DISTRONIC controller unit is located in the middle of the radiator.
Task
The DISTRONIC 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 460 (Canada version) and except code 494 (USA version))
- Permanent limiter
- DISTRONIC PLUS
- Distance warning
- Adaptive Brake Assist
The DISTRONIC controller unit compares the permanent target and actual values with each other and evaluates the respective driver requirements. In order to implement the automatic clearance and speed control the DISTRONIC controller unit transmits the respective requests for acceleration, deceleration and switching via the chassis CAN 1 (CAN E1) after evaluation of all input factors.
This means that the front DISTRONIC controller unit has the following tasks:
- Reading in input factors
- Evaluation of input factors
- Transmission of initial parameters
Reading in input factors
The DISTRONIC controller unit receives the following input signals via the chassis CAN 1:
- Operating condition for engine/drivetrain
- Driving stage engaged
- Parking brake status
- Engine drive torque
- Brake torque
- Acceleration/yaw rate
- Driver request via cruise control lever (S40/4) (up to 30.11.2018)
- Driver request via cruise control resume switch (S163/1s19) (as of 01.12.2018)
- Driver request to overtake through setting the turn signal
- Vehicle speed/acceleration
- Steering wheel angle
- Brake pedal position
- Accelerator pedal position
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor whereupon the relevant signals are then issued.
Transmission of initial parameters
Amongst other things the DISTRONIC controller unit sends the following initial parameters via chassis CAN 1:
- System status of DISTRONIC PLUS
- 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
- Requests to introduce PRE-SAFE® measures (with CODE 299 (PRE-SAFE® system))
Structure
The DTR controller unit contains the following assembly parts:
- Long range radar
- Control unit
Properties of the long range radar:
- Detection range of radar sensor:
- Distance less than 30 m for a detection angle of 30°
- Distance of 30 to 100 m for a detection angle of 20°
- Distance of 100 to 200 m for a detection angle of 12°
- Carrier frequency: 77 GHz (in accordance with the "Pulse Doppler Principle" for independent measurement of distance and speed)
The DISTRONIC controller unit must be newly adjusted after exchange (e. g. after an accident repair) using the integrated "service adjustment mode".
| Wiring diagram for Distronic (DTR) control unit | Model 190 with engine 178.9 as of 6/1/15 with code 239 (Active Distance Assist DISTRONIC) | PE30.30-P-2101-97HBA |