High Efficiency Diesel Engine with Low Heat Loss Combustion Concept - Toyota’s Inline 4-Cylinder 2.8-Liter ESTEC 1GD-FTV Engine -

Kogo, Tomoyuki; Hamamura, Yoshihiko; Nakatani, Koichiro; Toda, Tadashi; Kawaguchi, Akio; Shoji, Akira

doi:10.4271/2016-01-0658

Cited by 44 publications

(34 citation statements)

References 6 publications

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“…There has been considerable recent activity to minimize heat losses and improve engine performance through in-cylinder insulation. [1][2][3][4][5][6] Historically, many authors have attempted to use incylinder insulation for engine performance benefits. Some of the pioneering works were performed by TACOM for military vehicles, emphasizing the elimination of the engine cooling system, and the tactical benefits provided by improved efficiency.…”

Section: Introductionmentioning

confidence: 99%

Assessing the capability of conventional in-cylinder insulation materials in achieving temperature swing engine performance benefits

Andruskiewicz

Najt

Durrett

et al. 2017

International Journal of Engine Research

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Materials that enable wall-temperature-swing to follow the gas temperature throughout a reciprocating internal combustion engine cycle promise the greatest benefits from incylinder insulation without detriments to volumetric efficiency or fuel autoignition behavior. An anisotropic barium-neodymium-titanate (BNT) insulation was selected as a promising off-the-shelf material to begin investigating temperature swing characteristics while maintaining adequate strength and adherence to the aluminum components it was applied to. Experimental analysis showed that permeable porosity within the BNT coating resulted in increased heat losses despite thermal insulation, fuel absorption losses, and a reduction in compression ratio. Additionally, the thickest coating suffered severe degradation throughout testing. Any potential benefits of temperature-swing insulation were dominated by these losses, emphasizing the need to maintain a sealed coating surface.

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Section: Introductionmentioning

confidence: 99%

Assessing the capability of conventional in-cylinder insulation materials in achieving temperature swing engine performance benefits

Andruskiewicz

Najt

Durrett

et al. 2017

International Journal of Engine Research

View full text Add to dashboard Cite

show abstract

“…The efficiency of the diesel bus engine (ICEV buses, figure 2) was assumed to be 38-47% [16,17], including heat losses, friction, pumping work and auxiliaries like lights, power steering, brake booster and a sound system, etc. The transmission efficiency is typically 70-80% [18].…”

Section: Reference Scenario-100% Icev Diesel Fleetmentioning

confidence: 99%

Exploring the Introduction of Plug-In Hybrid Flex-Fuel Vehicles in Ecuador

Arcentales

Silva

2019

Energies

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In Europe, diesel combustion is being banned due to the NOx and PM2.5 emissions impact on air quality. The bus sector is being electrified and is increasing its use of alternative fuels, such as natural gas (in spark ignition engines) and bioethanol (in compression ignition engines), to reduce such harmful emissions. Even if a diesel bus is equipped with selective catalytic reduction (SCR), its NOx emissions are reduced its but produces more NH3 emissions that are PM2.5 precursors. In developing countries, the air quality is still barely monitored, however, the air quality issue is well known and is being addressed. Moreover, the Ecuadorian sugar cane industry is seeking ways to increase its ethanol production. This is the ideal framework to explore a new technology and energy source in developing economies such as Ecuador. This paper explores the impact of the Ecuadorian diesel bus fleet conversion to hybrid compression ignition ethanol (HEV-ED95), hybrid diesel and plug-in hybrid flex-fuel using electricity and internal combustion engine ICE-E20 and ICE-E100. The impacts are measured in terms of final energy consumption, criteria pollutant emissions (NH3, NOx, PM2.5) and 100 years global warming potential in a well-to-wheels framework. For the tank-to-wheels data the method follows the typical values of conversion efficiency from final to useful energy (cross checked with a microsimulation model), the Tier 2 European Environmental Agency approach combined with ethanol influence on compression ratio, lower heating value, criteria emissions taken from a literature review, and well-to-tank emission factors for electricity (10–58% thermal natural gas or coal powerplant contribution), for ethanol from banana industry wastes (ED95, E20 and E100), gasoline and diesel from US databases. A discussion on whether sugarcane biorefineries are necessary is highlighted in the results. All input parameters have an uncertainty range between a minimum and a maximum and the probability for each is giving by a uniform distribution.

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“…Some of them are developed based on the re-entrant chamber; these chambers employ round lips and squish pips to enlarge the fuel spray distribution and provide high turbulence [16,17]. Doosan [18], Toyota [19], Ricardo [20] and Ford [21] changed the re-entrant chamber's round lip into a tapered lip or a stepped lip and set a declining surface around the re-entrant entrance. Benz [22] and Mazda [23] moved the re-entrant chamber round lips downward and obtained stepped bowl chambers.…”

Section: Introductionmentioning

confidence: 99%

Visualization Investigation of the Influence of Chamber Profile and Injection Parameters on Fuel Spray Spreading in a Double-Layer Diverging Combustion Chamber for a DI Diesel Engine

Feng

Tian

et al. 2018

Energies

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The double-layer diverging combustion chamber (DLDC chamber) aims to improve the fuel–air mixing formation and promote in-cylinder air utilization by changing fuel spray spreading characteristics. In order to investigate how the DLDC chamber profile and injection parameters affect the fuel spray spreading, visualization of fuel injection and impingement tests were carried out on two different DLDC chambers with different fuel injection parameters. The visualization test results showed that double-layer fuel spray spreading was obtained in the two DLDC chambers and the peripheral top clearance of each chamber was utilized efficiently. The DLDC chamber with a 50% upper layer volume provided a larger fuel spray distribution region after the start of injection. The DLDC chamber with a 70% upper layer volume obtained a larger fuel spray distribution region with better top clearance utilization at the later stage of injection. The injection parameters mentioned in this research showed significant effects on the fuel spray spreading in the DLDC chamber. Increasing the injection pressure provided a larger fuel spray distribution area at the beginning of injection. Decreasing the nozzle hole diameter had a positive influence on obtaining a larger fuel spray distribution. Advancing the injection timing enabled the enlarging of the fuel distribution region.

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High Efficiency Diesel Engine with Low Heat Loss Combustion Concept - Toyota’s Inline 4-Cylinder 2.8-Liter ESTEC 1GD-FTV Engine -

Cited by 44 publications

References 6 publications

Assessing the capability of conventional in-cylinder insulation materials in achieving temperature swing engine performance benefits

Assessing the capability of conventional in-cylinder insulation materials in achieving temperature swing engine performance benefits

Exploring the Introduction of Plug-In Hybrid Flex-Fuel Vehicles in Ecuador

Visualization Investigation of the Influence of Chamber Profile and Injection Parameters on Fuel Spray Spreading in a Double-Layer Diverging Combustion Chamber for a DI Diesel Engine

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