Diesel Engine Emissions and Performance Optimization for Neat GTL Fuel

Uchida, Nozomu; Hirabayashi, Hiroshi; Sakata, Ichiro; Kitano, Koji; Yoshida, Hiroshi; Okabe, Nobuhiro

doi:10.4271/2008-01-1405

Cited by 19 publications

(8 citation statements)

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“…As a result, when fuel was switched from diesel to GTL, the LHV of injected fuel was reduced so as the power and torque. A calibrated engine can upgrade the maximum power and torque output [44,134]. GTL Blends with diesel and bio-diesel did not demonstrate much variation than neat GTL.…”

Section: Torque /Powermentioning

confidence: 96%

“…GTL shows marginally lower torque and power compared to conventional diesel fuel. Several studies illustrated 2~5 percent decrease in maximum power output and 4~7 percent decrease in peak torque ranges in GTL than Diesel [44,134]. The reasons may be because of fuel properties (lower density, LHV) of GTL and also unmodified ECU of the test engine.…”

Section: Torque /Powermentioning

confidence: 99%

“…GTL fuel showed lower PM emission than Diesel and biodiesels [9,24,26,44,118,134] even at all variations of injection timing [20,119]. GTL-diesel blends showed significant reduction in PM compared to neat diesel [25,108,114] .GTL-biodiesel blends generally showed reduced PM emission compared to neat diesel [41-43, 45, 115].…”

Section: Particulate Matter Emissionmentioning

confidence: 99%

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Engine combustion, performance and emission characteristics of gas to liquid (GTL) fuels and its blends with diesel and bio-diesel

Sajjad

Masjuki

Varman

et al. 2014

Renewable and Sustainable Energy Reviews

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Crude oil price hikes, energy security concerns and environmental drivers have turned the focus on alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleumderived diesel or bio-diesel. GTL fuel derived from Fischer-Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a "clean fuel" for its inherent ability to reduce engine exhaust emission even with blends of diesel and Biodiesel. This paper illustrates feasibility of GTL fuel in context of comparative fuel properties with conventional diesel and bio-diesels. This review also describes the technical attributes of GTL and its blends with diesel and bio-diesel focusing their impact on engine performance and emission characteristics on the basis of the previous research works. It can introduce an efficacious guideline to devise several blends of alternative fuels, further development of engine performance and to constrain exhaust emission to cope with the relentless efforts to manufacture efficient and environment friendly powertrains.

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Section: Torque /Powermentioning

confidence: 96%

Section: Torque /Powermentioning

confidence: 99%

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Engine combustion, performance and emission characteristics of gas to liquid (GTL) fuels and its blends with diesel and bio-diesel

Sajjad

Masjuki

Varman

et al. 2014

Renewable and Sustainable Energy Reviews

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“…A wide range of research has been conducted on the combustion characteristics and emissions of GTL diesel using single cylinder and multi-cylinder engines, optical engines, and commercial vehicles under standard testing cycles, and real world driving conditions [4][5][6][7][8][9][10][11][12][13][14]. It has proved that the GTL diesel has the potential to deliver comparable engine performance and lower emissions to a conventional diesel without major engine hardware modifications.…”

Section: Introductionmentioning

confidence: 99%

Investigation of gasoline containing GTL naphtha in a spark ignition engine at full load conditions

Wang

Chahal

Janßen

et al. 2017

Fuel

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Gas-to-liquid (GTL) naphtha can be used as a gasoline blend component, and the challenge of its low octane rating is solved by using ethanol as an octane booster. However, currently there is little knowledge available about the performance of gasolines containing GTL naphtha in spark ignition engines. The objective of this work is to assess full load performance of gasoline fuels containing GTL naphtha in a modern spark ignition engine. In this study, four new gasoline fuels containing up to 23.5 vol.% GTL naphtha, and a standard EN228 gasoline fuel (reference fuel) were tested. These new gasoline fuels all had similar octane rating with that of the standard EN228 gasoline fuel. The experiments were conducted in an AVL single cylinder spark ignition research engine under full load conditions in the engine speed range of 1000-4500 rpm. Two modern engine configurations, a boosted direct injection (DI) and a port fuel injection (PFI), were used. A comprehensive thermodynamic analysis was carried out to correlate experiment data with fuel properties. The results show that, at the full load operating conditions the combustion characteristics and emissions of those gasoline fuels containing GTL naphtha were comparable to those of the standard EN228 gasoline fuel. Volumetric fuel consumption of fuels with high GTL naphtha content was higher due to the need of adding more ethanol to offset the reduced octane rating caused by GTL naphtha. Results also indicate that, compared to the conventional compliant E228 gasoline fuel, lower particulate emissions were observed in gasoline fuels containing up to 15.4 vol.% GTL naphtha.

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“…[10][11][12] However, if engines are optimized to adapt to the distinctive specifications of FTD fuel, there could be a possibility to improve not only exhaust emissions, but also fuel consumption. 13,14 This study has two purposes for better understanding of the FTD fuel characteristics. One is to clarify the effect of FTD fuels specifications on the combustion and emission characteristics by means of three diesel engines with different engine displacements.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous improvement in both exhaust emissions and fuel consumption by means of Fischer–Tropsch diesel fuels

Uchida

Sakata

Kitano

et al. 2012

International Journal of Engine Research

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In recent years, paraffinic fuels have attracted attention because of their potential for reducing diesel exhaust emissions, mainly smoke or particulate matter emissions. One of the paraffinic fuels, a Fischer-Tropsch diesel fuel, was selected to demonstrate the lower exhaust emissions while improving fuel economy in this study. To examine the detailed effects of fuel specifications on diesel combustion and emissions, preliminarily tests for three Fischer-Tropsch fuels and a baseline diesel fuel were carried out with three diesel engines having different engine displacements. In addition, differences in combustion phenomena between Fischer-Tropsch fuels and the baseline diesel fuel were observed by means of a singlecylinder engine with optical access. From these findings, one of the tested engines was modified to improve both exhaust emissions and fuel consumption, simultaneously, dedicated to the use of neat Fischer-Tropsch fuels. The conversion efficiency of an oxides of nitrogen reduction catalyst has also been improved. The desirable properties of Fischer-Tropsch fuels for diesel combustion, namely high cetane number and absence of poly-aromatic hydrocarbon contents, have been fully utilized to enhance the conventional diesel combustion limits to show the possibility to achieve very low exhaust emissions with substantial improvement in fuel economy. The results of this study indicate not only the superior emission characteristics of the Fischer-Tropsch fuels, but also evidence that higher exhaust gas recirculation and lower excess air ratios will be a key concept of both engine and aftertreatment optimization for further fuel consumption improvement.

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Diesel Engine Emissions and Performance Optimization for Neat GTL Fuel

Cited by 19 publications

References 1 publication

Engine combustion, performance and emission characteristics of gas to liquid (GTL) fuels and its blends with diesel and bio-diesel

Engine combustion, performance and emission characteristics of gas to liquid (GTL) fuels and its blends with diesel and bio-diesel

Investigation of gasoline containing GTL naphtha in a spark ignition engine at full load conditions

Simultaneous improvement in both exhaust emissions and fuel consumption by means of Fischer–Tropsch diesel fuels

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