Perovskite Catalyst for In-Cylinder Coating to Reduce Raw Pollutant Emissions of Internal Combustion Engines.
Xiaochao WuMarcus FischerAdrian NoltePia LenßenBangfen WangThorsten OhlerthDominik WöllKarl Alexander HeuferStefan PischingerUlrich SimonPublished in: ACS omega (2022)
Aiming to achieve the highest combustion efficiency and less pollutant emission, a catalytic coating for cylinder walls in internal combustion engines was developed and tested under several conditions. The coating consists of a La 0.8 Sr 0.2 CoO 3 (LSCO) catalyst on an aluminum-based ceramic support. Atomic force microscopy was applied to investigate the surface roughness of the LSCO coating, while in situ diffuse infrared Fourier transform spectroscopy was used to obtain the molecular understanding of adsorption and conversion. In addition, the influence of LSCO-coated substrates on the flame quenching distance was studied in a constant-volume combustion chamber. Investigations conclude that an LSCO coating leads to a reduction of flame quenching at low wall temperatures but a negligible effect at high temperatures. Finally, the influence of LSCO coatings on the in-cylinder wall-near gas composition was investigated using a fast gas sampling methodology with sample durations below 1 ms. Ion molecule reaction mass spectrometry and Fourier transform infrared spectroscopy revealed a significant reduction of hydrocarbons and carbon monoxide when LSCO coating was applied.
Keyphrases
- room temperature
- atomic force microscopy
- mass spectrometry
- particulate matter
- municipal solid waste
- sewage sludge
- single molecule
- gas chromatography
- high resolution
- carbon dioxide
- ionic liquid
- high speed
- multiple sclerosis
- highly efficient
- metal organic framework
- low grade
- high grade
- energy transfer
- capillary electrophoresis