The Influence of High Cetane Blending Components on Emissions From a Heavy-Duty Diesel Engine With EGR

Abstract

The exhaust emissions form a single-cylinder version of a heavy-duty diesel engine with exhaust gas recirculation (EGR) were measured with eight high-cetane components blended into an ultra-low sulphur diesel base fuel. the blending components evaluated were conventional nitrate and peroxide cetane improver additives, paraffins from two sources, three ethers, and soy methyl ester. The blending components were used to increase the cetane number of a base fuel by ten numbers, from 44 to 54. Exhaust emissions were measured using the AVL eight-mode steady-state test procedure. PM and NOx emissions from the engine were fairly insensitive to ignition quality improvement by nitrate and peroxide cetane improvers. Soy methyl ester and two of the ethers, 1,4 diethoxybutane and 2-ethoxyethyl ether, significantly reduced PM emissions, but increased ONx emissions. The two paraffinic blending components reduced both PM and NOx emissions.

Hydroprocessing of Biomass-Derived Oils and Their Blends with Petroleum Feedstocks: A Review

“…These alkanes have cetane numbers of 95–105, , which boost the cetane number of the produced diesel fuel (i.e., super cetane diesel) and lead to a diesel fuel with superior ignition quality . This, in turn, reduces diesel engine exhaust emissions (CO, NO x , hydrocarbons, and particulate matters) …”