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The formation of three families of oxygenated compounds is studied in the case of isooctane combustion. Stoichiometric, lean and rich conditions are studied at different distances from a flat burner. Nine carbonyl compounds, five alcohols and three organic acids are found in detectable concentrations in the combustion products. These oxygenated compounds are formed very quickly, their concentrations...
Two synthetic aliphatic fuels and a commercial one were used on a Diesel vehicle to study the impact on exhaust regulated and non-regulated emissions. The two aliphatic fuels decrease hydrocarbons (HC), carbon monoxide (CO) and particulate matter (PM) emissions comparing to the reference fuel (commercial fuel), but they slightly increase nitrogen oxides (NO x ) emissions. Total particle number...
The analysis of carbonyl species of a gasoline fuelled Spark-Ignition and Homogeneous Charge Compression Ignition (SI/HCCI) engine operating modes was performed upstream and downstream of a three way catalyst (TWC) converter. All data were obtained during steady-state, fully warmed-up operation at different engine conditions, using a winter grade commercial gasoline containing 2%w/w ethanol (C ...
The environmental and energy policies in most nations worldwide aim at replacing fossil fuels with renewable sources of energy. The use of wood pellets made from sawdust is rapidly increasing. Wood pellets are a refined compacted fuel with high energy density and low emissions during combustion. Sawdust and wood pellets may be stored for several months due to seasonal demand variation and wood-fuel...
There is a consensus that particulate matter and gases pollutants originating from industry and vehicle emission processes in urban areas are important from the point of view of public health and climate change. Local anthropogenic emissions, especially those resulting from energy generation processes from the industrial and transport sector, are connected with those occurring at the regional and...
Acids, aldehydes, and phenols have negative effects on the properties of bio-oil. In this paper, n-butanal, acetic acid, and phenol were selected as model compounds of aldehydes, acids, and phenols, respectively. To convert these compounds into stable and combustible oxygenated organics (alcohols and esters), separate hydrogenation–esterification (SHE) of n-butanal, phenol, and acetic acid was carried...
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