BMW 3: System overview
BMW 3 Series G20 (2018-2025) Training manual / Hybrid Brake System / System overview
System overview of hybrid brake system
- Hydraulic braking
- Signal path
- Regenerative braking
- High-voltage battery unit
- Electric Motor Electronics (EME)
- Electric motor
- Drive train
- Digital Motor Electronics (DME)
- Wheel brakes
- Dynamic Stability Control (DSC)
- Brake pedal with brake pedal angle sensor and brake booster
- Accelerator pedal module
- Rectified high-voltage (DC) for storing in the high-voltage battery unit
- Electrical energy generated by the electrical machine (AC voltage)
- Bus message "Accelerator pedal angle" from the DME to the EME (energy recovery in coasting overrun mode)
- Bus message "Braking torque setpoint" from the DSC to the EME
- Hydraulic pressure from the DSC to the wheel brakes
- Hydraulic pressure from the brake booster to the DSC
- Electrical signal "Brake pedal angle" from the brake pedal angle sensor to the DSC
- Operation of the brake pedal
- Electrical signal "Accelerator pedal angle" from accelerator pedal module to the DME (energy recovery in coasting overrun mode)
- Releasing the accelerator pedal
READ NEXT:
Hydraulic braking
G20 PHEV, hydraulic braking
The brake booster is operated via the driver's foot operation, and the brake
actuation is determined by
means of the brake pedal angle sensor.
Depending on the brak
Regenerative braking
The regenerative braking makes possible brake energy regeneration. The
electrical machine works
here as an alternator and brakes the gears via automatic transmission -
propeller shaft - re
Emergency braking function
Regenerative braking with help of the drivetrain only effects the rear axle.
The brake force on the rear
axle must not exceed a specific value in proportion to that on the front axle.
This would oth
SEE MORE:
Safe working practices for working on a high-voltage system
The following description of the repair of the high-voltage components is
only a general list of the
content and the procedure. In general, only the specifications and instructions
in the current
valid edition of the repair instructions apply.
Before working on high-voltage components of the G20&
General information
Music tracks, audio books, and podcasts can be
played back. Sound is played back through the
vehicle loudspeakers.
Settings are stored for the driver profile currently
used.
Depending on the vehicle equipment, the following
audio sources can be used:
Music hard disk.
USB storage device.
Bluetooth
© 2019-2025 Copyright www.bmw3g20.com
