Proton has confirmed i-HEV as the official name of its new intelligent hybrid system, which will enter production use in the forthcoming AMA 02 model.
Announced on Nov 10, the system combines a petrol engine with electric propulsion, switching between different power sources to improve efficiency without requiring external charging.
Unlike a conventional petrol drivetrain, i-HEV can propel the vehicle using its electric motor alone, with the engine either supplying electricity or contributing mechanical power when required.
Its 1.5-litre naturally aspirated Dedicated Hybrid Engine (DHE) produces 111 PS and 136 Nm. Proton claims a peak thermal efficiency of 46.5%, achieved partly through Atkinson-cycle combustion and a 14:1 compression ratio.
The engine works with a Dedicated Hybrid Transmission (DHT) housing two electric motors.
One acts primarily as a starter-generator, while the other handles propulsion and energy recovery. The driving motor develops 163 PS and 220 Nm.
Previously reported specifications describe the DHT as a one-speed, 11-in-1 unit with claimed transmission efficiency of 97.5% and peak dual-motor efficiency of 97%.
The drivetrain operates in four automatically managed configurations.
In EV mode, propulsion comes entirely from the battery-powered motor. Series operation uses the engine to produce electricity, while Parallel mode allows both petrol and electric power to turn the wheels.
Direct Drive mechanically connects the petrol engine to the wheels, making it suitable for sustained cruising.
A 1.38 kWh battery supports electric operation, with energy replenished through regenerative braking and engine-driven generation.
Proton has not disclosed the combined system output.
The company is also assembling the DHE, DHT and Electric Drive Unit (EDU) at Tanjong Malim, extending its local manufacturing activities into major electrified drivetrain components.
These operations include assembly-related testing and quality control, providing Malaysian personnel with experience in hybrid powertrain production.
