Overview
This document contains information on:
General
Location
Function requirements
Function
General
The electric drive powertrain control unit is the central control unit for all functions of the drivetrain.
It is connected to the network architecture of the vehicle.
Location
The powertrain control unit is located in the front passenger footwell.
N127 | Drivetrain control unit |
P08.20-A000-82
Function requirements
Circuit 30t ON
Function
The tasks of the powertrain control unit include:
Traction management
Energy management
Heat management in the drivetrain
Electric drive low-temperature circuit
High-voltage battery low-temperature circuit
Interface (gateway) between the connected bus systems
The powertrain control unit processes information, including the following:
For vehicles with two electric machines, the corresponding information is processed and sent for each machine.
Circuit status
Voltage/high-voltage battery current
High-voltage battery charge level
Temperature of high-voltage battery
DC/DC converter temperature
Temperature of alternating current charger for high-voltage battery
Maximum charge/discharge current
Contactor status
Status of alternating current charger for high-voltage battery
Actual value of electric machine torque
Actual value electric machine engine speed
Available torque from electrical machine
Status of electrical machine
Fan motor status
Accelerator pedal sensor
Start/stop button
Status of the DYNAMIC SELECT switch
Status of steering wheel gearshift buttons
The powertrain control unit processes the input factors and sends information, including the following:
Specified value of the electric machine torque
Electric machine torque limitation
Direction of rotation of electric machine
Drive train operational
Transmission mode