Effects of Combustion Chamber Deposits on Tailpipe Emissions

Bitting, William H.; Firmstone, G. P.; Keller, Charles T.

doi:10.4271/940345

Cited by 29 publications

(4 citation statements)

References 8 publications

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“…Thus, the increasing temperatures due to the insulating and heat-storage effects of the deposits can be expected to increase engine-out NO x emissions. Statistically significant increases in tailpipe NO x emissions with increasing deposit thickness have been observed experimentally [11].…”

Section: Combustion Chamber Depositmentioning

confidence: 95%

Thermal analysis of cylinder head carbon deposits from single cylinder diesel engine fueled by palm oil–diesel fuel emulsions

et al. 2009

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Section: Combustion Chamber Depositmentioning

confidence: 95%

Thermal analysis of cylinder head carbon deposits from single cylinder diesel engine fueled by palm oil–diesel fuel emulsions

et al. 2009

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“…Interest in combustion chamber deposits (CCD) and their effects on engine emissions has increased as fuel and additives technology to control deposits in other parts of the engine has matured (e.g. Bitting et al, 1994;Papachritos et al, 1995;Harpster et al, 1995;Kalghatgi, 1995). Harpster et al (1995) reported an increase of up to 25% in NO V emissions, where the observed increase was dependent on the fuel structure.…”

Section: Lean-burn Engine Conceptsmentioning

confidence: 99%

On the emissions from internal‐combustion engines: a review

Abdel‐Rahman

1998

Int. J. Energy Res.

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SUMMARYThe urban air pollution is a very complicated problem. The exhaust emissions from internal-combustion engines account for a major portion of this problem. It is realized that the content and concentrations of the exhaust emissions depend on various parameters. These parameters include engine design parameters, operational parameters, exhaust gas aftertreatment, fuel types, fuel additives and lubricants. The present review paper discusses the effect of some parameters on the emission level and characteristics from internal-combustion engines. The paper begins with an introduction of general information on the nature of emissions of exhaust gases, including the toxicity and causes of emissions for both spark-ignition and diesel engines. The paper then shifts to an up-to-date information of the published research work on the subject matter.1998 John Wiley & Sons, Ltd.

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“…18–23 Although it primarily influences SI engine operation at the extremes of the operating map, deposit growth in SI engines has a non-negligible impact on a number of performance parameters such as power, fuel economy, and emissions. 20,24–32 However, because HCCI engine operation does not have a direct trigger, the presence of deposits will affect the entire operating range. 33,34…”

Section: Introductionmentioning

confidence: 99%

The effect of fuel composition and additive packages on deposit properties and homogeneous charge compression ignition combustion

Lacey

Kameshwaran

Filipi

et al. 2019

International Journal of Engine Research

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Homogeneous charge compression ignition combustion is highly dependent on in-cylinder thermal conditions that are favorable to auto-ignition, and the presence of deposits can dramatically impact the in-cylinder environment. Because fuels available at the pump can differ considerably in composition, and fuel composition and the included additive package directly affect how deposits accumulate in a homogeneous charge compression ignition engine, strategies intended to bring homogeneous charge compression ignition to market must account for this fuel and additive variability. In order to investigate this impact, two oxygenated refinery stream test fuels with two different additives were run in a single cylinder homogeneous charge compression ignition engine. The two fuels had varying chemical composition; one represents a “dirty” fuel with high aromatic content that was intended to simulate a worst-case scenario for deposit growth, while the other represents a California Reformulated Gasoline Blendstock for Oxygenate Blending fuel, which is the primary constituent of pump gasoline at fueling stations across the state of California. The additive packages are typical of technologies that are commercially available to treat engine deposits. Both fuels were run in an experimental, single-cylinder homogeneous charge compression ignition engine in a passive conditioning study, during which the engine was run at steady state over a period of time in order to track changes in the homogeneous charge compression ignition combustion event as deposits accumulated in-cylinder. Both the composition and the additive influenced the structure of the combustion chamber deposit layer, but more importantly, both the rate at which the layer developed and the equilibrium thickness it achieved. The overall thickness of the combustion chamber deposit layer was found to have a significant impact on homogeneous charge compression ignition combustion phasing.

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Effects of Combustion Chamber Deposits on Tailpipe Emissions

Cited by 29 publications

References 8 publications

Thermal analysis of cylinder head carbon deposits from single cylinder diesel engine fueled by palm oil–diesel fuel emulsions

Thermal analysis of cylinder head carbon deposits from single cylinder diesel engine fueled by palm oil–diesel fuel emulsions

On the emissions from internal‐combustion engines: a review

The effect of fuel composition and additive packages on deposit properties and homogeneous charge compression ignition combustion

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