The legislative framework for new Internal Combustion Engines for the next years is currently being defined, with the review of the LD CO2 emissions standards and Euro 7 proposal to regulate pollutant emissions under a wide range of driving conditions. Despite a -100% tailpipe-only CO2 target by 2035, some perspective is kept for the potential role of sustainable renewable fuels (LCA and recital on CO2-neutral fuels). This study investigates a gasoline demonstrator vehicle equipped with a 48V mild-hybrid powertrain and a 1.5 L direct injection engine. The innovative emission control system consists of an electrically pre-heated catalyst (EHC) and first three-way catalyst (TWC) in close-coupled position, in combination with an underfloor catalysed gasoline particulate filter (cGPF), second TWC and ammonia slip catalyst (ASC). Pollutant emission tests are conducted on a challenging chassis dyno test for cold-start emissions at 23 °C and -10 °C. Tests were done on reference E10 fuel, as well as Blue Gasoline and two e-gasoline samples. The results show the system achieves near-zero pollutant emissions when the emissions control system is warm, irrespective of the fuel. The initial cold-start peak is reduced compared to already low Euro 6d levels between -40 to -64%. Warm-up of the system is achieved within 30 seconds or 150 meters of driving. This presentation will include a new analysis of the data according to the methodology of the Euro 7 proposal and new fresh GPF data.
Session:
ZERO-IMPACT- EMISSIONS II
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| 16:00 - 16:30