Hot Start Transient Emissions from a Mercedes OM 366 LA and a Detroit Diesel Operated on Chilean, California, and US 2D Fuels

Khalek, Imad A.; Ullman, Terry L.; Vasquez, Luis; Guerrero, Marcelo

doi:10.4271/2002-01-2827

Cited by 4 publications

(4 citation statements)

References 4 publications

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“…33,39 Consistent fuel effects have not been found for the impact of cetane number on NO x emissions; however, the use of cetane number improvement additives has been shown to reduce NO x emissions. [29][30][31][32]34,39,40 The results of the engine dynamometer part of this study are in general agreement with the literature, although since the CARB diesel fuel has a combination of a lower density, aromatics content, and PAH content, and a higher cetane number compared to Federal diesel fuels, the individual effects of these different variables could not be distinguished.…”

Section: Discussionsupporting

confidence: 90%

“…25 Most studies have shown cetane number generally does not have a significant influence on PM emissions. 25,29,32,36,38 For the other pollutant emissions, which were not evaluated as part of the initial CARB diesel fuel regulation, it appears that the CARB diesel will not provide significant benefits for THCs, with THC benefits seen for only a limited subset of the engine dynamometer testing, and not at all for the chassis dynamometer testing. CO emissions showed mixed trends, with consistent benefits seen for the CARB diesel for the engine dynamometer testing, but not the chassis dynamometer testing.…”

Section: Discussionmentioning

confidence: 93%

“…25 A majority of studies have shown that a reduction of aromatic content leads to reductions of NO x emissions. 29–33 A few studies have reported either very small or no impacts of aromatic content on NO x emissions, however. 34–38 Some studies have shown that reducing density reduces NO x emissions.…”

Section: Discussionmentioning

confidence: 99%

“…25 Most studies have shown cetane number generally does not have a significant influence on PM emissions. 25,29,32,36,38…”

Section: Discussionmentioning

confidence: 99%

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Assessment of the emissions from the use of California Air Resources Board qualified diesel fuels in comparison with Federal diesel fuels

Hajbabaei

Johnson

Guthrie

et al. 2012

International Journal of Engine Research

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The California Air Resources Board (CARB) has regulated the properties of diesel fuel sold in California since 1988 to lower emissions of particulate matter (PM) and oxides of nitrogen (NO x ). Although many studies have shown that reduced levels of aromatics and higher cetane numbers can improve emissions, the actual impact of CARB fuels on inuse diesel emissions has not yet been extensively studied, especially as diesel engine and aftertreatment technology has evolved over the years. This study evaluates the differences between California and Federal diesel fuels with heavy-duty engine and chassis dynamometer tests. The engine dynamometer results showed that NO x emissions for the Federal fuels ranged from 4.7% to 9.5% higher than the CARB diesel. These NO x reductions are similar to the estimates being used in the latest regulations. The chassis dynamometer test results did not show as consistent trends for NO x as those seen for the engine dynamometer testing. For the chassis dynamometer testing, four out of ten vehicles showed consistent reductions in NO x , with emissions for the Federal fuels ranging from 3.3% to 9.9% higher than the CARB diesel, while the other six vehicles did not show consistent fuel impacts. On an absolute level, the NO x benefit for CARB diesel shows a decline with continuing advances in engine technology. The results showed that CARB diesel did not show strong benefits for PM. The results also showed that the introduction of aftertreatment systems for PM and NO x will, over time, largely eliminate any potential benefits that might be obtained through the use of CARB diesel, although NO x benefits will persist through to 2020.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

“…25 Most studies have shown cetane number generally does not have a significant influence on PM emissions. 25,29,32,36,38…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of the emissions from the use of California Air Resources Board qualified diesel fuels in comparison with Federal diesel fuels

Hajbabaei

Johnson

Guthrie

et al. 2012

International Journal of Engine Research

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Fuels for Engines and the Impact of Fuel Composition on Engine Performance

Mueller

Cannella

Kalghatgi

2014

Encyclopedia of Automotive Engineering

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Fuel is required for an engine to produce work. Reciprocating internal combustion engines are classified by the manner by which this fuel is ignited: spark ignition (SI) or compression ignition (CI). The specific effects of changing a given fuel property depend on many detailed parameters of the engine and combustion strategy in which the fuel is used, as well as the conditions over which the engine is operated. SI engines typically perform better with higher volatility fuels that resist autoignition (gasolines), while conventional CI engines tend to perform better with fuels exhibiting the opposite volatility and autoignition characteristics (diesel fuels). Fuels and engine technologies are currently evolving, however, and as a result, these historical fuel distinctions may become less relevant in the future. As such, it is important to understand how the chemical composition of a fuel determines its operational attributes, including autoignition quality and volatility, as well as many others. This chapter provides a broad overview of topics related to the selection and use of fuels for reciprocating internal combustion engines, including the following: petroleum‐based, alternative, and renewable fuel production techniques; the compositional characteristics of liquid‐ and gas‐phase fuels; key physical and chemical properties of fuels; and the specifications that have been developed to ensure that fuels perform as required in their given applications. The chapter concludes with a brief summary and outlook for the future of fuels for reciprocating internal combustion engines.

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Study of turbocharged diesel engine operation, pollutant emissions and combustion noise radiation during starting with bio-diesel or n-butanol diesel fuel blends

Rakopoulos¹,

Dimaratos²,

Giakoumis³

et al. 2011

Applied Energy

209

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Hot Start Transient Emissions from a Mercedes OM 366 LA and a Detroit Diesel Operated on Chilean, California, and US 2D Fuels

Cited by 4 publications

References 4 publications

Assessment of the emissions from the use of California Air Resources Board qualified diesel fuels in comparison with Federal diesel fuels

Assessment of the emissions from the use of California Air Resources Board qualified diesel fuels in comparison with Federal diesel fuels

Fuels for Engines and the Impact of Fuel Composition on Engine Performance

Study of turbocharged diesel engine operation, pollutant emissions and combustion noise radiation during starting with bio-diesel or n-butanol diesel fuel blends

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