Proton Names New Hybrid System “i-HEV”
Proton has officially named its upcoming hybrid drivetrain the i-HEV intelligent hybrid system. As you may recall, the company first previewed the technology at the Kuala Lumpur International Mobility Show (KLIMS) 2026, where it showcased a new 1.5-litre hybrid engine developed specifically for electrified powertrains. The national automaker says the drivetrain will make its debut […] The post…
Proton has unveiled its new hybrid drivetrain, the i-HEV intelligent hybrid system, at the Kuala Lumpur International Mobility Show (KLIMS) 2026. The system features a naturally aspirated 1.5-litre Dedicated Hybrid Engine (DHE) that produces 111PS and 136Nm of torque, with an Atkinson-cycle combustion process aimed at improving fuel efficiency.
The engine's 14:1 compression ratio, water-cooled exhaust gas recirculation, variable displacement oil pump, and electric water pump all contribute to increased efficiency, reaching 46.5% thermal efficiency. The DHE is paired with a Dedicated Hybrid Transmission (DHT) that includes two electric motors, one for engine starting and electricity generation and the other for wheel driving and energy recovery during deceleration.
An automatic Power Control Module (PCM) manages four operating modes for the system: EV Mode, Series Mode, Parallel Mode, and Direct Drive Mode. A 1.38kWh battery stores energy for electric driving and motor assistance, recharged through regenerative braking and the petrol engine, eliminating the need for external charging. Proton plans to manufacture the DHE locally at its Tanjong Malim facility, strengthening Malaysia's automotive supplier ecosystem.
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