title: Effects of mixing system and pilot fuel quality on diesel-biogas dual fuel engine performance.
abstract: This paper describes results obtained from CI engine performance running on dual fuel mode at fixed engine speed and four loads, varying the mixing system and pilot fuel quality, associated with fuel composition and cetane number. The experiments were carried out on a power generation diesel engine at 1500 m above sea level, with simulated biogas (60% CH(4)-40% CO(2)) as primary fuel, and diesel and palm oil biodiesel as pilot fuels. Dual fuel engine performance using a naturally aspirated mixing system and diesel as pilot fuel was compared with engine performance attained with a supercharged mixing system and biodiesel as pilot fuel. For all loads evaluated, was possible to achieve full diesel substitution using biogas and biodiesel as power sources. Using the supercharged mixing system combined with biodiesel as pilot fuel, thermal efficiency and substitution of pilot fuel were increased, whereas methane and carbon monoxide emissions were reduced.
authors.affiliation: Gas Science and Technology Group, Faculty of Engineering, University of Antioquia, Calle 67 No., 63-108 Medellín, Colombia. ibedoyac@udea.edu.co
authors.forename: Iván Darío
authors.initials: ID
authors.lastname: Bedoya
authors.forename: Andrés Amell
authors.initials: AA
authors.lastname: Arrieta
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Cadavid
mesh_terms: D000388:Air; D001674:Bioelectric Energy Sources; D002248:Carbon Monoxide / Q000032:analysis; D005742:Gasoline / Q000032:analysis*; D008697:Methane / Q000032:analysis; D018986:Motor Vehicles / Q000592:standards*; D011312:Pressure; D013696:Temperature
chemical_list: D005742:Gasoline; D002248:Carbon Monoxide; D008697:Methane