Nissan unveils third-generation e-POWER powertrain with 5-in-1 modular unit

Third-Generation e-POWER System

Nissan has launched its third-generation e-POWER powertrain, an electric-drive hybrid system. This iteration includes a gasoline engine specifically designed for e-POWER applications, optimizing power generation independently of driving conditions and powerband. The system maintains the EV-like driving experience of previous versions.

5-in-1 Modular Electric Unit

A key feature of the new system is the "5-in-1" modular approach, which integrates the motor, reducer, inverter, increaser, and generator into a single unit. This integration aims to enhance performance, significantly improve fuel efficiency, and reduce noise levels. The modular design also contributes to reducing parts count and production investment by sharing components with EV powertrains.

Efficiency and Performance Enhancements

The 5-in-1 unit achieves higher efficiency by increasing current flow for greater output and mitigating energy loss. It uses flat wire coils for higher motor current and features a latest-generation power module with double-sided cooling in the inverter, improving efficiency, especially at high speeds. Some models incorporate silicon carbide (SiC) power semiconductors in the inverter to further reduce power loss and improve fuel efficiency.

Noise and Vibration Reduction

Improvements in rigidity through integration help avoid interference between the resonance points of the vehicle body, contributing to enhanced quietness. High-precision assembly reduces runout tolerances of rotating shafts, such as motors and gears, thereby suppressing vibration within the system.