The goal is to achieve a fuel efficient gasoline engine. This is why this project developed at European level and called EAGLE has been created. Researchers from the Polytechnic University of Valencia (UPV) participate, specifically the CMT-Thermal Motors Institute, and it is coordinated by the IFPEN research center (France).
The project seeks to develop a combustion system that helps to achieve high-performance gasoline engines that consume less fuel and generate fewer polluting emissions.
In the project, which has been carried out over the last four years, different technologies have been developed and evaluated. Among them a new ignition and ultra-poor combustion system, new materials in the catalysts for the elimination of NOx and thermal insulation to reduce heat losses in the engine. All this with the aim of improving its thermal efficiency and reducing emissions to less than 50 gr. CO2 / km according to the WLTP driving cycle.
According to Alberto Broatch, the researcher in charge of the project for the CMT-UPV part, the maximum performance of gasoline engines today oscillates around 40% and the rest is energy that is lost. “Our fundamental objective was to reduce these energy losses, which are already produced from combustion, thus increasing the efficiency of the engine. The tests that have been carried out offer promising results, with an efficiency above 48%, as well as a reduction in NOx and particulate emissions “Broatch emphasizes.
“The work of the CMT-Motores Térmicos of the UPV focused on the evaluation of smart coatings that reduce heat losses in the combustion chamber. Our team carried out parametric studies and advanced calculations to define the main thermal characteristics of these coatings “, adds Pablo Olmeda, researcher at the CMT institute.
The technologies developed by the project partners (pre-chamber, injector, coatings…) were integrated into a single-cylinder engine manufactured by Renault, which was evaluated at IFPEN.
Vitesco Technologies, which optimized the injection system for the prototype’s pre-chamber, and the Università degli Studi di Napoli Federico II, which contributed to the calibration and optimization of the EAGLE multi-cylinder engine, also participated in the project. For its part, the VKA Institute of RWTH Aachen University, together with FEV Europe GmbH, carried out advanced calculation studies to design the novel ignition system for the pre-chamber, and developed an innovative NOx storage catalyst (NSC). Finally Saint-Gobain Research Provence and Saint-Gobain Coating Solutions created the robust thermal spray coating, which was then applied to parts of two engines.
“The experimental research on the multi-cylinder Renault engine carried out at IFPEN has validated the innovative two-stage supercharging system with electric assistance, as well as the after-treatment system necessary to achieve very low NOx and particulate emissions (up to 10 nm) in the exhaust pipe. And the vehicle simulations carried out by the Università degli Studi di Napoli Federico II suggest that the EAGLE PHEV application using the propulsion system of the Renault E-Tech could reach 50 gCO2 / km “, concludes Xandra Margot, also from the CMT-Thermal Engines of the UPV.
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