Effect of Different Ethanol-Gasoline Blends on Exhaust Emissions and Fuel Consumption

Delgado, Rosa; Paz, Susanna

doi:10.4271/2012-01-1273

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…Komatsu et al 6 studied combustion characteristics within the engine using a DME–methane fuel blend. Additionally, Bielaczyc et al 7 and Delgado and Paz 8 reported the engine performance and the emission characteristics using an ethanol–gasoline fuel blend. Furthermore, Sivalakshmi and Balusamy 9 studied the performance and characteristics of the exhaust gas in a diesel engine using a biodiesel–DME fuel blend.…”

Section: Introductionmentioning

confidence: 99%

A study on the spray and engine combustion characteristics of diesel–dimethyl ether fuel blends

Iida

2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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The purpose of this study was to compare the spray characteristics, the combustion characteristics and the emissions (nitrogen oxides, carbon monoxide, hydrocarbon and smoke) of typical fuels (100% diesel and 100% dimethyl ether) and diesel-dimethyl ether fuel blends in a constant-volume chamber and a single-cylinder direct-injection diesel engine. The spray characteristics were investigated by varying the ambient pressure and the fuel injection pressure using a commonrail fuel injection system with various fuel mixture ratios. The spray characteristic research parameters were the spray shape, the penetration length and the spray angle at the seven-hole injector. Common types of injector were used (Bosch). Two types of fuel blended by mass fraction were employed. Typical fuels (100% diesel and 100% dimethyl ether) and fuel blends with diesel:dimethyl ether mixture ratios of 95:5 and 90:10 were used. The injection pressure was fixed at 70 MPa while the ambient pressure was varied (0 MPa, 2.5 MPa and 5 MPa). The combustion experiments were conducted in a single-cylinder engine equipped with a common rail. The injection pressure was 700 bar at 1200 r/min. The amount of injected fuel was adjusted to obtain a fixed input calorific value of 972.2 J/cycle in order to make a comparison between the fuel types. The results showed that the injection quantity was greater with diesel fuel but not for dimethyl ether fuel and for the fuel blend with the higher mixing ratio. The spray penetration length increased with increasing ambient pressure for diesel but decreased for dimethyl ether with a larger spray angle. The ignition delay and the heat release rate decreased with increasing dimethyl ether which led to a higher indicated mean effective pressure and higher thermal efficiency because there was less negative work in the expansion. The total hydrocarbon emissions and the carbon monoxide emissions decreased with increasing dimethyl ether, but the nitrogen oxide emissions generated were greater owing to the increased combustion temperature.

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Section: Introductionmentioning

confidence: 99%

A study on the spray and engine combustion characteristics of diesel–dimethyl ether fuel blends

Iida

2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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New Aspects to Greenhouse Gas Mitigation Policies for Low Carbon Cities

et al. 2016

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Methane (CH 4 ) is an important greenhouse gas emitted by vehicles. This study provides estimates of emissions of this important and often not well characterized greenhouse gas (GHG) emission related to transportation energy use. It aims to assist urban community planners and policymakers to prioritize and choose implementation strategies for low carbon cities. The paper focuses on emissions of CH 4 from vehicles. Unlike emissions of CO 2 , which are relatively easy to estimate, emissions of CH 4 are a function of many complex aspects of combustion dynamics and depend on the type of emission control systems used. In this context, they cannot be derived easily and instead must be determined through the use of published emission factors for each combination of fuel, end-use technology, combustion conditions, and emission control systems. Emissions of CH 4 play a significant role with regards to the relative CO 2 -equivalent GHG emissions of the use of alternative transportation fuels, in comparison with the use of conventional fuels. By analyzing a database based on literature review this study analyzes all the factors affecting the creation of CH 4 emissions from different vehicle types. Statistical analysis indicated "r" values ranging from 0.10 to 0.85 for all vehicles.

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Vehicle Exhaust Emissions Characterization by Chromatographic Techniques Applied to Different Gasoline-Ethanol Blends.

Paz-Estivill

Delgado-Ortiz

Cirera-Domènech

et al. 2013

SAE Technical Paper Series

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Effect of Different Ethanol-Gasoline Blends on Exhaust Emissions and Fuel Consumption

Cited by 5 publications

References 8 publications

A study on the spray and engine combustion characteristics of diesel–dimethyl ether fuel blends

A study on the spray and engine combustion characteristics of diesel–dimethyl ether fuel blends

New Aspects to Greenhouse Gas Mitigation Policies for Low Carbon Cities

Vehicle Exhaust Emissions Characterization by Chromatographic Techniques Applied to Different Gasoline-Ethanol Blends.

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