CO2 and particulates emissions decrease is a main challenge of the automotive sector. European OEMs and automotive manufacturers need new long term technologies, still to be implemented in 2030. Currently, hybrid powertrains are considered as the main trend to achieve clean and efficient vehicles. EAGLE (Efficient Additivated Gasoline Lean Engine) project aims at improving the energy efficiency of road transport vehicles by developing an ultra-lean spark ignition gasoline engine, adapted to future electrified powertrains. This new concept will demonstrate 50% peak brake thermal efficiency while reducing particulate and NOx emissions and while using a conventional engine architecture. It
will also reach real driving Euro 6 values with no conformity factor. This innovative approach will consequently support the achievement of the long term fleet target of 50 g/km CO2 by providing an affordable hybrid solution. EAGLE will tackle several challenges focusing on:
• Reducing engine thermal losses through a smart coating approach
• Reaching ultra-lean combustion (lambda > 2) with very low particulate (down to 10 nm) emissions by innovative hydrogen boosting
• Developing breakthrough ignition system for ultra-lean combustion
• Investigating a close loop combustion control for extreme lean limit stabilization
• Addressing and investigating NOx emissions reduction technologies based on a tailor made NOx storage catalyst or using H2 as a reducing agent for SCR.
A strong engine modeling approach will allow to predict thermal and combustion performance to support the engine development and to assess the engine performance prior to single and multi-cylinder test bench applications. An interdisciplinary consortium made of nine partners from four different countries (France, Germany, Italy, Spain) will share its cutting-edge know-how in new combustion process, sensing, control, engine manufacturing, ignition system, simulation & modeling, advanced coating, as well as after-treatment systems.