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原文传递 Combustion and Engine-Out Emissions Characteristics of a Light Duty Vehicle Operating on a Hydrogenated Vegetable Oil Renewable Diesel.

题名：	Combustion and Engine-Out Emissions Characteristics of a Light Duty Vehicle Operating on a Hydrogenated Vegetable Oil Renewable Diesel.
作者：	Karavalakis, G.; Johnson, K.; Durbin, T. D.; McCaffery, C.
关键词：	Engine-out emissions and combustion characteristics, Hydrogenated vegetable oil (HVO), Carbon dioxide (CO2), Selective catalytic reduction (SCR), Ultra Low Sulfur Diesel (ULSD), Total hydrocarbons (THC), Oxides of Nitrogen (NOx), Carbon Monoxide (CO), Particulate matter (PM), Soot mass, Solid particle number (SPN), Diesel particle filter (DPF)
摘要：	Hydrogenated vegetable oil (HVO) is a promising biofuel that can be produced by means of a refinery-based process that converts animal fats and vegetable oils in paraffinic hydrocarbons. Most HVO is characterized by a high cetane number with virtually no sulfur or aromatic compounds. The advantages of HVO fuel, including its attractive fuel properties and environmental characteristics, as well as California government mandates, have led to its expanded use over the last several years in many California cities. The purpose of this project is to investigate the engine-out emissions and combustion characteristics of HVO from a current technology diesel vehicle to better understand the emissions performance of HVO as a drop-in fuel. Two fuels were used in this study, including an Ultra Low Sulfur Diesel (ULSD) and a neat HVO to evaluate one light-duty diesel truck equipped with common rail direct injection. The HVO fuel contained 98.5 vol % of HVO and 1.5 vol % petroleum; and is hereinafter, denoted as “HVO”. Although the vehicle was equipped with a diesel particle filter (DPF) and selective catalytic reduction (SCR) aftertreatment systems, all emissions sampling occurred before the catalyst. The vehicle was tested at least twice on each fuel using the LA-92 drive cycle and at steady-state conditions at 30 miles per hour (mph) and 50 mph at different loads. The test vehicle was preconditioned using a procedure that included multiple fuel drain and fills (40% of the fuel tank volume) and an LA-4 drive cycle. Engine-out emissions measurements were made for total hydrocarbons (THC), oxides of nitrogen (NOx), carbon monoxide (CO), carbon dioxide (CO2), particulate matter (PM) mass, soot mass, solid particle number (SPN), and fuel economy. Combustion pressure measurements were made over the LA-92 drive cycle and the steady-state conditions using a dSpace data acquisition system. The engine noise was characterized through the combustion sound level. Combustion noise measurements were made during steady-state conditions at each load point.
报告类型：	科技报告