23rd Stuttgart International Symposium 

Automotive and Engine Technology

4 - 5 July 2023

Session: ZERO-IMPACT- EMISSIONS II | | 16:00 - 16:30

Zero-impact Emissions from a Gasoline Car with advanced Emission Controls and E-Fuels

Joachim Demuynck, AECC (AISBL)

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.