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Renault talks about the evolution of the E-Tech hybrid system - Sustainable Mobility

2023-12-07T15:18:34.860Z

Highlights: Renault talks about the evolution of the E-Tech hybrid system - Sustainable Mobility. Renault is a brand that has profoundly renewed its range in recent years through electrification. This has led to the addition of hybrid proposals to electric models, which have reached a new evolutionary phase, which are essential at this time. This is how the innovative 140 hp first-generation E-tech Hybrid engine launched in 2020 was born. The second generation, with a system power of 200 hp, arrived on the market in 2022-2023 equipping the new models of the house of the Lozenge.


Renault is a brand that has profoundly renewed its range in recent years through electrification, which has led to the addition of hybrid proposals to electric models, which have reached a new evolutionary phase, which are essential at this time. (ANSA)


Renault is a brand that has profoundly renewed its range in recent years through electrification, which has led to the addition of hybrid proposals to electric models, which have reached a new evolutionary phase, which are essential at this time of energy transition. On the other hand, he was able to draw on both the experience gained with battery-powered cars and the work he did in F1. This is how the innovative 140 hp first-generation E-Tech Hybrid engine launched in 2020 was born, while the second generation, with a system power of 200 hp, arrived on the market in 2022-2023 equipping the new models of the house of the Lozenge that respond to the names of Austral, new Espace, and Rafale. Specifically, there have been many optimizations, starting with the adoption of a brand new super-efficient combustion engine. In fact, with these cars a maximum power of 145 hp would not have been enough, which is why the Renault men identified the new 1.2 internal combustion engine with 3-cylinder architecture, with better energy efficiency than the 4-cylinder, as the ideal replacement for the naturally aspirated 1.6. The unit in question was imagined as an engine designed to be used alone, and to be able to be part of a hybrid engine, thanks to its compact size, essential to enter the engine compartments and not weigh down the power unit. In addition, the height of the cylinder head has been reduced to keep the piston stroke long, an optimized 350 bar injection system has been installed, and work has been done on the catalytic converter architecture under the turbo to improve the efficiency of emissions treatment.
As far as the electrical sector is concerned, a 400-volt electrical architecture has been used, compared to the 230-volt one of the first generation of E-Tech models, while the battery has increased from a capacity of 1.2 kWh to 2 kWh, and the main electric motor from a power of 35 kW to 50 kW.
In addition, the toothed transmission has been strengthened to cope with the increase in power and torque of the two main engines, and the fifth gear, which it is equipped with, but which was not involved in the first generation of E-Tech models, has been made usable. But that's not all, because by eliminating one of the pinions that drive the second HSG (High-voltage Starter Generator) electric motor, a saving in engine operation of 0.5 grams of CO2/km has been achieved. Finally, the electronic and software improvements that had already been applied in the original 140 hp engine in its life cycle were used.



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Source: ansa

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