Diesel Exhaust Emissions Using Sasol Slurry Phase Distillate Process Fuels

Schaberg, Paul; Myburgh, I. S.; Botha, Jacobus J.; Roets, Piet; Viljoen, Carl; Dancuart, Luis P.; Starr, Michael E.

doi:10.4271/972898

Cited by 61 publications

(41 citation statements)

References 10 publications

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“…Testing for this study included available diesel fuels, biodiesel blends (e.g., BD20 is 20% biodiesel), fuels from the Fischer-Tropsch process (termed F-T and MG), and a blend of the MG fuel with isobutanol. The results of the testing were then compared with similar studies by Graboski et al 16 and Schaberg et al 18 The PM results are shown in Figure 3. The fuels tested by Schaberg et al 18 were diesel fuel from the Sasol slurry phase distillate process and blends of the two and are termed 2D, B1, B2, B3, N, K, and C. The comparison showed a maximum decrease of 66% in PM emissions for the fuels tested relative to No.…”

Section: Fuel Differencesmentioning

confidence: 91%

Factors Affecting Heavy-Duty Diesel Vehicle Emissions

Clark

Kern

Atkinson

et al. 2002

Journal of the Air & Waste Management Association

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Societal and governmental pressures to reduce diesel exhaust emissions are reflected in the existing and projected future heavy-duty certification standards of these emissions. Various factors affect the amount of emissions produced by a heterogeneous charge diesel engine in any given situation, but these are poorly quantified in the existing literature. The parameters that most heavily affect the emissions from compression ignition engine-powered vehicles include vehicle class and weight, driving cycle, vehicle vocation, fuel type, engine exhaust aftertreatment, vehicle age, and the terrain traveled. In addition, engine control effects (such as injection timing strategies) on measured emissions can be significant. Knowing the effect of each aspect of engine and vehicle operation on the emissions from diesel engines is useful in determining methods for reducing these emissions and in assessing the need for improvement in inventory models. The effects of each of these aspects have been quantified in this paper to provide an estimate of the impact each one has on the emissions of diesel engines.

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Section: Fuel Differencesmentioning

confidence: 91%

Factors Affecting Heavy-Duty Diesel Vehicle Emissions

Clark

Kern

Atkinson

et al. 2002

Journal of the Air & Waste Management Association

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“…A 20% blend of FischerTropsch fuel with diesel showed a 27% PM benefit. Two South African Fischer-Tropsch fuels have been compared by Schaberg et al [6] with California diesel fuel and federal diesel fuel, using a Detroit Diesel Series 60 engine under hot transient test conditions. The two novel fuels had substantially lower NO x emissions than the federal diesel fuel, and were each over 14% lower on NO x emissions than the California diesel fuel.…”

Section: Introduction and Prior Literaturementioning

confidence: 99%

On-Road Use of Fischer-Tropsch Diesel Blends

Clark¹,

Gautam²,

Lyons³

et al. 1999

SAE Technical Paper Series

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Alternative compression ignition engine fuels are of interest both to reduce emissions and to reduce U.S. petroleum fuel demand. A Malaysian Fischer-Tropsch gas-to-liquid fuel was compared with California #2 diesel by characterizing emissions from over the road Class 8 tractors with Caterpillar 3176 engines, using a chassis dynamometer and full scale dilution tunnel. The 5-Mile route was employed as the test schedule, with a test weight of 42,000 lb. Levels of oxides of nitrogen (NO x ) were reduced by an average of 12% and particulate matter (PM) by 25% for the Fischer-Tropsch fuel over the California diesel fuel. Another distillate fuel produced catalytically from Fischer-Tropsch products originally derived from natural gas by Mossgas was also compared with 49-state #2 diesel by characterizing emissions from Detroit Diesel 6V-92 powered transit buses, three of them equipped with catalytic converters and rebuilt engines, and three without. The CBD cycle was employed as the test schedule, with a test weight of 33,050 lb. For those buses with catalytic converters and rebuilt engines, NO x was reduced by 8% and PM was reduced by 31% on average, while for those buses without, NO x was reduced by 5% and PM was reduced by 20% on average. It is concluded that advanced compression ignition fuels from non-petroleum sources can offer environmental advantages in typical line haul and city transit applications.

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“…Moreover, they contain no sulfur, benzene, or other aromatic compounds. Measurements have shown 13-37 % reductions in particulate emissions and 6-28 % reductions in NOx emissions relative to diesel fuel [Sirman et al, 1998;Schaberg et al, 1997;Norton et al, 1998]. Even greater reductions would be likely if the engines were optimized for use with these fuels, including exhaust gas after-treatment as well as engine modifications.…”

Section: Box 4 Synthetic Middle Distillates From Coal Via Syngasmentioning

confidence: 99%

Toward zero emissions from coal in China

Williams

2001

Energy for Sustainable Development

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Diesel Exhaust Emissions Using Sasol Slurry Phase Distillate Process Fuels

Cited by 61 publications

References 10 publications

Factors Affecting Heavy-Duty Diesel Vehicle Emissions

Factors Affecting Heavy-Duty Diesel Vehicle Emissions

On-Road Use of Fischer-Tropsch Diesel Blends

Toward zero emissions from coal in China

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