EcoTrac™ eAWD System

AAM is taking eAWD to the next level and offering major advancements:

AWD System CO2 reduction Performance Safety Affordable hybrid solutions

Peformance Advantages Of AAMs eAWD System:

Rear axle traction torque up to 1200Nm Torque vectoring torque up to +/- 1200Nm Fuel efficiency gains 14-30% compared to conventional AWD (depending on vehicle variant and level of hybridization) Improved stability and handling Improved acceleration 0-100 kph / 0-62 mph

Special Control System Considerations:

An AUTOSAR-compliant platform (from an application/ECU perspective) Safety-critical functionality Designed to meet ISO 26262 requirements Impacts fuel efficiency and thus emissions Yaw control strategy and subordinated to ESC in stability control

Operating Modes:

Traction Electric regeneration Launch assist Acceleration boost Torque vectoring Full electric drive

Key Features:

eRDM: POWER & CONTROL BOX:

Traction & torque vectoring A portfolio of options from 15kW to 50kW Mounted on rear axle cross member Passive cooling by underbody airflow 28 kg / 62 lbs ECU Vehicle specific and tunable software control strategy Inverter Low power DC/DC-converter Mounted inside the vehicle Forced air cooling 9 kg / 20 lbs

 

Architectual Impact with Conventional AWD: Architectual Impact with eAWD:

Rear Subframe Rear Floor Tunnel Area Fuel Tank Exhaust System Catalytic Convertor Seat Cross Member Transmission PTU PT Mounts Front Subfroame X-Member Steering Gear Stabilizer Bar Heat Shields Body Reinforcements Rear Axle Spare Wheel Well Air Shields DPF Electrical Architecture From 20 Interfaces to 5 Battery Body Fixation for Power Pack Interior Trim for Power Pack Rear Axle Electrical Architecture

 

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