Combustion improvement for reducing exhaust emissions in IDI diesel engine

Hotta, Yoshihiro; Nakakita, Kiyomi; Inayoshi, Minaji; Ogawa, T.; Sato, Takeshi; Yamada, Mitsumasa

doi:10.1016/s0389-4304(96)00050-1

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…The effects of different engine operating conditions on the combustion characteristics have been observed and performed in many studies. − Rakopoluos et al , investigated the heat-release rate of a turbocharged IDI engine having a very small prechamber and a very narrow connecting passageway for both chambers. Their results showed that the magnitude heat release and cumulative heat-release rate of the main chamber increased with an increase in the engine load.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Combustion Characteristics and Emissions of an Indirect Injection Diesel Engine under Different Operating Conditions

Türkcan

Çanakçı

2008

Energy Fuels

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In this study, the effects of engine-operating conditions on the combustion characteristics and emissions of an indirect injection (IDI) diesel engine have been experimentally investigated. The engine tests were conducted on 20, 30, and 40 N m constant loads and at full load condition. The experimental results show that the maximum cylinder gas pressures (P max) increased with an increasing engine speed and load. The location of the maximum cylinder gas pressure closed to top dead center (TDC) at high engine load. The starts of combustion (SOC) points closed to TDC at high engine speeds. The ignition delay (ID) slightly decreased with the increase of the engine loads, and it increased with an increasing engine speed. However, as the total combustion duration (TC) increased with an increasing engine load, it decreased with high engine speeds. The exhaust emissions, such as nitrogen oxides (NO x ), smoke opacity, unburned hydrocarbon (HC), and carbon monoxide (CO), were also discussed for different operating conditions.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Combustion Characteristics and Emissions of an Indirect Injection Diesel Engine under Different Operating Conditions

Türkcan

Çanakçı

2008

Energy Fuels

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“…Marine ICEs have an almost 98% market penetration in the global fleet because of their high maturity, reliability, and efficiencies [1,[57][58][59][60]. Compared to spark-ignition engines, compression-ignition engines have higher thermal efficiencies, but with comparatively higher NO x and soot emissions [61][62][63]. Compression-ignition engines need a pilot injection of conventional fossil fuels for the combustion process to start.…”

Section: Biogas and Biomethane Pollutant Emissions Performance In Dua...mentioning

confidence: 99%

Application of Biogas and Biomethane as Maritime Fuels: A Review of Research, Technology Development, Innovation Proposals, and Market Potentials

Mallouppas¹,

Yfantis

Ioannou³

et al. 2023

Energies

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This review paper examines the applicability of biogas and biomethane as potential maritime fuels and examines issues of these fuels from a supply chain perspective (from production to end use). The objectives are to identify: (1) the latest research, development, and innovation activities; (2) issues and key barriers related to the technology readiness to bring biogas/biomethane to market; and (3) commercialisation issues, including cost parity with natural gas (the main competitor). A survey of the literature was carried out based on research articles and grey literature. The PESTEL and SWOT analyses identified opportunities for these fuels due to the relevant regulations (e.g., Fit for 55; the recent inclusion of the Mediterranean Sea as a SECA and PM control area; MPEC 79), market-based measures, and environmental, social, and governance strategies. The potential of biomass feedstock is estimated to have a substantial value that can satisfy the energy needs of the maritime industry. However, production costs of biomethane are high; estimated to be 2–4 times higher compared to natural gas. The market is moving in the direction of alternative drop-in fuels, including liquefied and compressed biomethane (LBM and CBM) and biogas. In terms of potential market penetration, LBM can be used as a marine drop-in fuel for the existing fleet that already combust LNG and LPG due to similar handling. Currently, these vessels are LNG and LPG tankers. However, in newly built vessels, LBM can be also supplied to container ships, vehicle carriers, and bulk carriers (about 20% of newly built vessels). Provided that compressed natural gas infrastructure exists, CBM can be exploited in vessels with low energy needs and low space requirements and shore-side electrification, because investments in retrofits are lower compared to constructing new infrastructure.

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“…The rate of the irreversibility variation in LHR engine is less than the baseline engine especially at low loads. A possible explanation for such different behavior may be an increased spray penetration because of higher temperature in cylinder before the combustion and increased wall impingement in LHR engine case [45]. According to these figures, the percentage of irreversibility to fuel injected exergy for the baseline at 25% ,50%, and 75% and full loads are 33.7%, 29.7587% , 25.7%, and 24.9342%, and these values for LHR engine are 35.7%,29.6%,26.7%, and 24.6%, respectively.…”

Section: Figures 3(a) and 3(b)mentioning

confidence: 99%

Exergy analysis in a low heat rejection IDI diesel engine by three dimensional modeling

Jafarmadar

Tasoujiazar

Jalilpour

2013

Int. J. Energy Res.

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SUMMARY Higher heat loss is one of the major problems in indirect injection diesel engine, which can be overcome by means of low heat rejection (LHR) concept. For this purpose, at the present work, piston and liner of the main chamber engine are insulated. Energy analyses for baseline and LHR engine cases are carried out during a closed engine cycle using a computational fluid dynamics code. Also, exergy analyses for these cases are carried out by a developed in‐house computational code. The numerical analyses are carried out at four different loads (25%, 50%, 75%, and 100%) and in maximum torque engine speed of 730 rpm. The numerical results of pressure in cylinder for baseline engine at 50 and 100% load operations are compared with the corresponding experimental data and achieved a good agreement. The comparison of the results for two cases shows that when the load increases from 25% to 100% (in 25% increments), heat loss exergy decreases by 68.73%, 80.24%,91.38%, and 74.97% respectively in LHR engine in comparison to baseline engine. Also, exergy efficiency increases by 17.2%, 12.4%, 6.07%, and 11.81% respectively in LHR engine. Copyright © 2013 John Wiley & Sons, Ltd.

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Combustion improvement for reducing exhaust emissions in IDI diesel engine

Cited by 10 publications

References 2 publications

Experimental Investigation of Combustion Characteristics and Emissions of an Indirect Injection Diesel Engine under Different Operating Conditions

Experimental Investigation of Combustion Characteristics and Emissions of an Indirect Injection Diesel Engine under Different Operating Conditions

Application of Biogas and Biomethane as Maritime Fuels: A Review of Research, Technology Development, Innovation Proposals, and Market Potentials

Exergy analysis in a low heat rejection IDI diesel engine by three dimensional modeling

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