Investigation of nitrogen oxides in the cylinder of a gas-diesel engine

Лиханов, В. А.; Лопатин, Олег Петрович

doi:10.1088/1742-6596/1515/4/042008

Cited by 3 publications

(7 citation statements)

References 17 publications

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“…The oxygen content of acetone aids quick and improved combustion and consequently increases the cylinder temperature, which ultimately augments NO x formation. Any engine operating at high speeds will result in an obvious increase in cylinder temperature, which is shown by the rising dashed–dotted curve . Moreover, the observed NO x increase may also be associated with a decrease in CO 2 emissions at high speeds. − Table depicts that the mean value of NO x emission for G is relatively lower than that of A10.…”

Section: Resultsmentioning

confidence: 95%

“…Any engine operating at high speeds will result in an obvious increase in cylinder temperature, which is shown by the rising dashed–dotted curve. 58 Moreover, the observed NO x increase may also be associated with a decrease in CO 2 emissions at high speeds. 45 − 47 Table 6 depicts that the mean value of NO x emission for G is relatively lower than that of A10.…”

Section: Resultsmentioning

confidence: 98%

“…Any slight variations in it would have considerable repercussions, often associated with the breakdown of large molecules and fuel dilution. 58 …”

Section: Resultsmentioning

confidence: 99%

“…KV is a vital attribute of lubricating oil regarding friction control, fuel efficiency, and emissions. Any slight variations in it would have considerable repercussions, often associated with the breakdown of large molecules and fuel dilution …”

Section: Resultsmentioning

confidence: 99%

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Acetone–Gasoline Blend as an Alternative Fuel in SI Engines: A Novel Comparison of Performance, Emission, and Lube Oil Degradation

et al. 2023

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The disproportionate use of petroleum products and stringent exhaust emissions has emphasized the need for alternative green fuels. Although several studies have been conducted to ascertain the performance of acetone–gasoline blends in spark-ignition (SI) engines, limited work has been done to determine the influence of fuel on lubricant oil deterioration. The current study fills the gap through lubricant oil testing by running the engine for 120 h on pure gasoline (G) and gasoline with 10% by volume acetone (A10). Compared to gasoline, A10 produced better results in 11.74 and 12.05% higher brake power (BP) and brake thermal efficiency (BTE), respectively, at a 6.72% lower brake-specific fuel consumption (BSFC). The blended fuel A10 produced 56.54, 33.67, and 50% lower CO, CO2, and HC emissions. However, gasoline remained competitive due to lower oil deterioration than A10. The flash-point and kinematic viscosity, compared to fresh oil, decreased by 19.63 and 27.43% for G and 15.73 and 20.57% for A10, respectively. Similarly, G and A10 showed a decrease in total base number (TBN) by 17.98 and 31.46%, respectively. However, A10 is more detrimental to lubricating oil due to a 12, 5, 15, and 30% increase in metallic particles like aluminum, chromium, copper, and iron, respectively, compared to fresh oil. Performance additives like calcium and phosphorous in lubricant oil for A10 decreased by 10.04 and 4.04% in comparison to gasoline, respectively. The concentration of zinc was found to be 18.78% higher in A10 when compared with gasoline. A higher proportion of water molecules and metal particles were found in lubricant oil for A10.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 98%

“…Any slight variations in it would have considerable repercussions, often associated with the breakdown of large molecules and fuel dilution. 58 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Acetone–Gasoline Blend as an Alternative Fuel in SI Engines: A Novel Comparison of Performance, Emission, and Lube Oil Degradation

et al. 2023

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“…When automobile fuel is burned, about 80% of nitrogen oxides present nitrogen monoxide (NO). The remaining 20% is nitrogen dioxide (NO2) [1]. Nitrogen monoxide is a colorless gas.…”

Section: Introductionmentioning

confidence: 99%

Reducing the Nitrogen Oxides Content in The Internal Combustion Engine Exhaust Gases by Using the Waste Heat Engine

L¹

2020

IJETER

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This paper is dedicated to solving the problem of reducing the nitrogen oxides content in exhaust gases while ensuring internal combustion engines fuel economy. Nitrogen oxides are the most toxic component of car exhaust. At the same time, the list of existing technologies that ensure the reduction of nitrogen oxides emissions while maintaining the engines fuel economy is very limited. Almost all the methods used to reduce the nitrogen oxides emission consist in a certain deforcing of the working process and, as a result, an increase in the specific fuel consumption. As a solution to this problem, the authors proposed the waste heat engine with an external heat supply and internal vapor generation. This engine is based on the PD-10U (ПД-10У) two-stroke starting engine, from which standard fuel and ignition systems were dismantled. Exhaust gases enter it, they are compressed, and then water is injected. The composition of the gas-vapor mixture in the cylinders undergoes complex changes; the presence of water vapor in the system at a temperature of 1,500ºС leads to thermal dissociation of its molecules, which makes possible to oxidize toxic components. In addition, the use of the waste heat engine allows generating additional power by utilizing the heat of the exhaust gases.

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Assessing the Sustainability of the Most Prominent Type of Marine Diesel Engines under the Implementation of the EEXI and CII Regulations

Polemis,

Boviatsis,

Chatzinikolaou

2023

Clean Technol.

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The wide spread of the Diesel engine has been instrumental in the development of modern shipping. Marine Diesel engines dominate today as an option for the propulsion of commercial ships. While replacing Diesel engines with alternative propulsion engines is difficult to achieve, companies, in light of the new EEXI regulations, are turning to improvements, such as operating at lower rotational speeds, higher maximum combustion pressures, and more efficient overcrowding systems. Τhe purpose of this research paper is (i) to present the basic operating principles of marine Diesel engines, (ii) to study the main differences between electronically controlled Diesel engines and their mechanically controlled counterparts, and (iii) to evaluate their performance under newly introduced IMO’s EEXI regulations. Thus, after comparing Wärtsilä RTA and WinGD WX, the paper concluded that WinGD WX, being electronically controlled, will perform more effectively under new EEXI regulations, as it offers (i) reduced fuel consumption in low-load mode, (ii) zero-smoke emission at all operating speeds, (iii) very stable operation at low speed, (iv) more straightforward engine setup leading to less maintenance, (v) more extended periods between maintenance, mainly due to better load distribution between cylinders and more perfect combustion. From a regulatory perspective, the new limitations installed by the newly implemented EEXI and CII regulations will cause fewer implications in electronically controlled engines, while from an economic standpoint, the electronically controlled engines decrease OPEX and require fewer personnel, due to their efficiency at low loads and overall flexibility.

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Investigation of nitrogen oxides in the cylinder of a gas-diesel engine

Cited by 3 publications

References 17 publications

Acetone–Gasoline Blend as an Alternative Fuel in SI Engines: A Novel Comparison of Performance, Emission, and Lube Oil Degradation

Acetone–Gasoline Blend as an Alternative Fuel in SI Engines: A Novel Comparison of Performance, Emission, and Lube Oil Degradation

Reducing the Nitrogen Oxides Content in The Internal Combustion Engine Exhaust Gases by Using the Waste Heat Engine

Assessing the Sustainability of the Most Prominent Type of Marine Diesel Engines under the Implementation of the EEXI and CII Regulations

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