Influence of Pre- and Post-Injection on the Performance and Pollutant Emissions in a HD Diesel Engine

Benajes, Jesús; Molina, Santiago; García, José Manuel Sánchez

doi:10.4271/2001-01-0526

Cited by 86 publications

(44 citation statements)

References 13 publications

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“…There are many studies dealing with postinjection in the literature (Hasse et al 1999;Chen 2000;Benajes et al 2001;Bianchi et al 2001;Hotta et al 2005;Desantes et al 2007;Arregle et al 2008). Because of the wide variety of scenarios studied by the different authors, an analysis of the conclusions must be performed very carefully.…”

Section: Pollutant Emissionsmentioning

confidence: 99%

A Comprehensive Study of Particle Size Distributions with the Use of PostInjection Strategies in DI Diesel Engines

Desantes

Bermúdez

García

et al. 2011

Aerosol Science and Technology

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Control strategies such as variations in injection pressure and timing have been used by researchers to reduce in-cylinder exhaust emissions and meet legislation standards. Postinjection has been studied for several years and is now well known as an efficient strategy for reducing soot emission. Diesel gaseous and particle mass emissions have been progressively reduced over the last twenty years as a consequence of increasingly restrictive emission legislation and the application of aftertreatment devices. The main objective of this work is to better understand the effect of postinjection on particle size distribution in diesel exhaust. The approach uses a modern, well-instrumented research engine test cell equipped with a flexible high pressure fuel injection system. The results of this work provide guidelines for developing strategies to reduce particle size distribution in diesel engines. A major improvement in particle size distribution was found in the accumulation mode by using a close postinjection of a small quantity of fuel. For reduction in nucleation mode, a relationship was found with close postinjections of large quantities of fuel.

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Section: Pollutant Emissionsmentioning

confidence: 99%

A Comprehensive Study of Particle Size Distributions with the Use of PostInjection Strategies in DI Diesel Engines

Desantes

Bermúdez

García

et al. 2011

Aerosol Science and Technology

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“…Abundant fundamental research on the combustion and emissions behavior under multiple injection strategies exists [13][14][15][16][17]; however, most of these studies were based on an experimental approach which has limitations in the quantitative analysis of in-cylinder phenomena.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Combustion and Emission Characteristics of Diesel Engines with Multiple Injection Strategies Using a Modified 2-D Flamelet Model

et al. 2017

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Abstract:The multiple injection strategy has been widely used in diesel engines to reduce engine noise, NO x and soot formation. Fuel injection developments such as the common-rail and piezo-actuator system provide more precise control of the injection quantity and time under higher injection pressures. As various injection strategies become accessible, it is important to understand the interaction of each fuel stream and following combustion process under the multiple injection strategy. To investigate these complex processes quantitatively, numerical analysis using CFD is a good alternative to overcome the limitation of experiments. A modified 2-D flamelet model is further developed from previous work to model multi-fuel streams with higher accuracy. The model was validated under various engine operating conditions and captures the combustion and emissions characteristics as well as several parametric variations. The model is expected to be used to suggest advanced injection strategies in engine development processes.

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“…The after-injection, taking place within milliseconds after the main injection, aims at afterburning all remaining solid particles, while the post-injection supports keeping proper temperature of the exhaust gas to ensure higher operating efficiency of the exhaust aftertreatment system. The abovementioned Multijet concept of fuel injection comprises five injection phases, but other systems, which now gain in popularity, divide the fuel dose into 7 or 8 parts [2,3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Fuel Dose Division on The Emission of Toxic Components in The Car Diesel Engine Exhaust Gas

Pietras

2016

Polish Maritime Research

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Influence of Pre- and Post-Injection on the Performance and Pollutant Emissions in a HD Diesel Engine

Cited by 86 publications

References 13 publications

A Comprehensive Study of Particle Size Distributions with the Use of PostInjection Strategies in DI Diesel Engines

A Comprehensive Study of Particle Size Distributions with the Use of PostInjection Strategies in DI Diesel Engines

Numerical Analysis of the Combustion and Emission Characteristics of Diesel Engines with Multiple Injection Strategies Using a Modified 2-D Flamelet Model

The Effect of Fuel Dose Division on The Emission of Toxic Components in The Car Diesel Engine Exhaust Gas

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