Renault Japon has announced that it will sequentially introduce models equipped with the "E-Tech Hybrid" system, a hybrid system independently developed by Renault incorporating know-how cultivated in F1 racing. At the Tokyo Auto Salon held from January 14th to 16th, the new SUV "Arkana" equipped with this "E-Tech Hybrid" was exhibited. The "Arkana" is scheduled to be introduced in Japan around Spring 2022.

Amidst increasingly stringent fuel economy and emissions regulations for automobiles, Renault has developed the "E-TECH HYBRID" system. This technology is characterized by its adoption of a dog clutch, used in motorsports including F1 where Renault has participated for over 40 years, combined with a transmission that achieves both weight reduction and compactness.

Since 2014, Renault has been introducing hybrid systems in F1 that incorporate energy recovery systems. The software developed to efficiently and rapidly operate these power units, which combine an engine with two motors, has been utilized here, leveraging the vast amount of driving data simulated and verified by the F1 team.

Know-how not only in energy management but also in engine efficiency, transmissions, and motors has been reflected in the development of hybrid technology for mass-produced vehicles. The "E-Tech Hybrid," developed by incorporating F1 know-how, consists of a 1.6-liter 4-cylinder naturally aspirated engine and a dog clutch multi-mode AT transmission connecting them.

Notably, the dog clutch multi-mode AT, which eliminates conventional clutches and synchronizers by using a dog clutch, contributes to weight and size reduction. Renault claims this system achieves both smooth gear changes and direct acceleration, unlike conventional powertrains, by efficiently and seamlessly delivering power from the motor and engine.

The electric motors generate 36 kW and 205 Nm for the main E-motor, and 15 kW and 50 Nm for the high-voltage starter & generator (HSG). The 1.6-liter 4-cylinder engine produces 69 kW and 148 Nm.

The Arkana, as well as the Lutecia and Captur, are equipped with a 1.2 kWh lithium-ion battery. The system also recovers energy during deceleration. Under favorable conditions, it is possible to drive in full electric mode for up to 80% of the time in urban driving, with expected fuel savings of up to 40%.

The E-Tech Hybrid offers a responsive driving feel, with the electric motor contributing to quiet and smooth starts, and assisting with acceleration during overtaking and at high speeds. We eagerly await the introduction of Renault's new F1-derived powertrain in Japan and look forward to experiencing its performance.