Combustion System Optimization of a New 2 Liter Diesel Engine For EURO IV

Fasolo, Bertrand; Doisy, Anne-Marie; Dupont, A.; Lavoisier, Frédéric

doi:10.4271/2005-01-0652

Cited by 27 publications

(22 citation statements)

References 1 publication

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“…However, in this situation, the 67 cold start problem is getting worse because current emission reg-68 ulations force the compression ratio of diesel engines to be further 69 reduced [3][4][5][6]. To improve the cold startability, air temperature 70 within the combustion chamber should be raised by using ignition 71 aids, such as intake heaters or glow plugs [7,8] in an optical direct injection diesel engine at a very low ambient 80 temperature down to 244 K [10].…”

mentioning

confidence: 97%

Fuel temperature influence on spray and combustion characteristics in a constant volume combustion chamber (CVCC) under simulated engine operating conditions

Hwang

Park

Bae

et al. 2015

Fuel

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mentioning

confidence: 97%

Fuel temperature influence on spray and combustion characteristics in a constant volume combustion chamber (CVCC) under simulated engine operating conditions

Hwang

Park

Bae

et al. 2015

Fuel

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“…There is a general trend towards lower compression ratios. This is due to ever higher specific powers [31] and more stringent emission legislations, especially for NOx. This trend poses even greater challenges for cold start performance, as lower compression ratios mean lower pressure and temperature levels in the cylinder at start of injection (SOI).…”

Section: Emissions Legislationsmentioning

confidence: 99%

Analysis of Smokeless Spray Combustion in a Heavy-Duty Diesel Engine by Combined Simultaneous Optical Diagnostics

Chartier

Aronsson

Andersson

et al. 2009

SAE Technical Paper Series

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“…The study converges to an optimum B/S ratio range of 0.9-0.95, being 0.85 the smallest B/S ratio evaluated. Also from an experimental study, Lavoisier et al [13] pointed out that higher B/S ratio will allow wider bowls that improve combustion process at high speed and load. This could be counteracted by the less favorable k-factor (ratio of bowl volume to total volume of the combustion chamber at TDC), which limits the air utilization.…”

Section: Introductionmentioning

confidence: 99%

A computational analysis of the impact of bore-to-stroke ratio on emissions and efficiency of a HSDI engine

et al. 2017

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Research on combustion systems for Internal Combustion Engines (ICE) is guided by the necessity of improving engine efficiency while achieving the pollutant regulations. In this framework, this study identifies and describes the effect of the bore-to-stroke ratio (B/S) on the combustion system performance and emissions by means of computational fluid dynamics (CFD). The study is applied to a 4-cylinder 4-stroke High Speed Direct Injection (HSDI) CI engine. It is divided in two parts, the first part is focused on one operating point and presents a detailed description of the main effects of different B/S ratios configurations, and the second part compares the results with different engine operating conditions. For both parts the air management, injection settings and compression ratio were kept constant in order to isolate the impact of the B/S ratio. The results confirmed that the indicated thermal efficiency was increased for lower B/S ratio because of the combustion chamber surface area decrease and faster combustion. Regarding the emissions, NOx and soot presented a strong and opposed dependence on B/S ratio generated mostly due to enhanced air-fuel mixing for lower B/S ratio. Finally, those trends were proven to be independent from the operating condition, giving the study a more general value.

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Combustion System Optimization of a New 2 Liter Diesel Engine For EURO IV

Cited by 27 publications

References 1 publication

Fuel temperature influence on spray and combustion characteristics in a constant volume combustion chamber (CVCC) under simulated engine operating conditions

Fuel temperature influence on spray and combustion characteristics in a constant volume combustion chamber (CVCC) under simulated engine operating conditions

Analysis of Smokeless Spray Combustion in a Heavy-Duty Diesel Engine by Combined Simultaneous Optical Diagnostics

A computational analysis of the impact of bore-to-stroke ratio on emissions and efficiency of a HSDI engine

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