Showing papers in "International Journal of Engine Research in 2021"
TL;DR: In this paper, thermal stratification technique by in-cylinder water injection toward pisis was used to improve thermal efficiency of spark ignition engine under super-lean burn conditions.
Abstract: In order to improve thermal efficiency of spark ignition engine under super-lean burn conditions (excess air ratio λ≈2.0), thermal stratification technique by in-cylinder water injection toward pis...
39 citations
TL;DR: A correlation-based model order reduction algorithm is developed using support vector machine to model N O x emission and break mean effective pressure of a medium-duty diesel engine, showing shorter training times and higher accuracy especially for test data compared to the artificial neural network model.
Abstract: A correlation-based model order reduction algorithm is developed using support vector machine to model NOx emission and break mean effective pressure of a medium-duty diesel engine. The support vec...
31 citations
TL;DR: Soot is one of the main pollutants produced by incomplete combustion of hydrocarbon fuels, which poses a serious threat to human health and the urban environment as mentioned in this paper, and has been generally consi...
Abstract: Soot is one of the main pollutants produced by incomplete combustion of hydrocarbon fuels, which poses a serious threat to human health and the urban environment. Alcohols have been generally consi...
31 citations
TL;DR: In this article, the effects of a broad range of fuel injection strategies on thermal efficiency and engine-out emissions (CO, total hydrocarbons, NOx and particulate number) were studied for gasoline and ethanol f...
Abstract: The effects of a broad range of fuel injection strategies on thermal efficiency and engine-out emissions (CO, total hydrocarbons, NOx and particulate number) were studied for gasoline and ethanol f...
28 citations
TL;DR: In this paper, a numerical study of the use of ammonia and hydrogen in a high-pressuredual-fuel (HPDF) combustion is presented. But the main fuels (hydrogen and ammonia) are direct injected and ignited by a small am...
Abstract: This work is a numerical study of the use of ammonia and hydrogen in a high-pressure-dual-fuel (HPDF) combustion. The main fuels (hydrogen and ammonia) are direct injected and ignited by a small am...
28 citations
TL;DR: The introduction of ever more stringent emission regulations on internal combustion engines beyond 2020 makes it necessary for original equipment manufacturers to find cost-effective solutions to improve the performance of their engines.
Abstract: Introduction of ever more stringent emission regulations on internal combustion engines beyond 2020 makes it necessary for original equipment manufacturers to find cost-effective solutions to impro...
27 citations
TL;DR: Low Temperature Combustion (LTC) strategies are most promising to simultaneously reduce oxides of nitrogen (NOx) and soot emissions from diesel engines along with offering higher thermal efficiency as discussed by the authors.
Abstract: Low Temperature Combustion (LTC) strategies are most promising to simultaneously reduce oxides of nitrogen (NOx) and soot emissions from diesel engines along with offering higher thermal efficiency...
26 citations
TL;DR: The anti-knock tendency of blends of butanol isomers and two gasoline surrogates (primary reference fuels and toluene primary reference fuels) was studied on a single-cylinder cooperative fuel rese... as mentioned in this paper.
Abstract: The anti-knock tendency of blends of butanol isomers and two gasoline surrogates (primary reference fuels and toluene primary reference fuels) was studied on a single-cylinder cooperative fuel rese...
26 citations
TL;DR: In this paper, high-efficiency gasoline engines tend to employ diluted combustion concepts along with intensified charge motion and stratifie... to meet the future requirements of fuel economy and exhaust emissions.
Abstract: To meet the future requirements of fuel economy and exhaust emissions, high-efficiency gasoline engines tend to employ diluted combustion concepts along with intensified charge motion and stratifie...
26 citations
TL;DR: In this article, a stationary single-cylinder compression ignition dual fuel engine for the combustion of diesel fuel with water ammonia solution was presented, and the effect of 25% reduction in fuel consumption was evaluated.
Abstract: This study presents experimental examinations of a stationary single-cylinder compression ignition dual fuel engine for the combustion of diesel fuel with water ammonia solution. The effect of 25% ...
24 citations
TL;DR: The use of an artificial neural network algorithm to simulate the nonlinear combustion process inside the cylinder and the regressors captured the effect of key operating variables on the engine response, suggesting the well-trained models successfully identified the complex relationships and can help assist engine analysis.
Abstract: The use of computational models for internal combustion engine development is ubiquitous. Numerical simulations using simpler to complex physical models can predict engine’s performance and emissio...
TL;DR: The piston ring is one of the most important parts of a two-stroke marine diesel engine and it is lubricated by a special mode in which the lubricating oil is directly injected into the liner's inner...
Abstract: The piston ring is one of the most important parts of a two-stroke marine diesel engine. It is lubricated by a special mode in which the lubricating oil is directly injected into the liner’s inner ...
TL;DR: In this paper, the authors discuss the major concerns for the road transport sector globally, which has motivated researchers to explore advanced combustion technologies, such as fuel cells and fuel injectors.
Abstract: Global warming and stringent emission norms have become the major concerns for the road transport sector globally, which has motivated researchers to explore advanced combustion technologies. React...
TL;DR: In this paper, thermal barrier coatings of various thickness and surface roughness were applied to the piston crown of a single-cylinder research engine and tested over a range of high-output diesel operating con...
Abstract: Thermal barrier coatings of various thickness and surface roughness were applied to the piston crown of a single-cylinder research engine and tested over a range of high-output diesel operating con...
TL;DR: In this article, the authors considered the application and refinement of artificial neural network methods for the prediction of NOx emissions from a high-speed direct injection diesel engine over a wide range of applications.
Abstract: This article considers the application and refinement of artificial neural network methods for the prediction of NOx emissions from a high-speed direct injection diesel engine over a wide range of
TL;DR: From the different power plants, the compression ignition diesel engines are considered the best alternative to be used in the transport sector due to its high efficiency as discussed by the authors, however, the current emis...
Abstract: From the different power plants, the compression ignition diesel engines are considered the best alternative to be used in the transport sector due to its high efficiency. However, the current emis...
TL;DR: Cycle-to-cycle variations in an optically accessible four-stroke direct injection spark-ignition gasoline engine are investigated using high-speed scanning particle image velocimetry and in-cylinder pressure measurements to predict combustion cycles of high indicated mean effective pressure.
Abstract: Cycle-to-cycle variations in an optically accessible four-stroke direct injection spark-ignition gasoline engine are investigated using high-speed scanning particle image velocimetry and in-cylinde...
TL;DR: In this article, the authors discuss the need for conventional diesel combustion to be compliant using costly and sophisticated aft combustion control systems, which is becoming increasingly stringent in heavy-duty diesel engines.
Abstract: Legislations concerning emissions from heavy-duty diesel engines are becoming increasingly stringent. This requires conventional diesel combustion to be compliant using costly and sophisticated aft...
TL;DR: In this article, a thermal barrier coating is applied to the combustion chamber, and the insulating effect magnifies the effect of heat transfer on homogeneous charge compression ignition combustion, which is known as the heat transfer effect.
Abstract: Heat transfer has a profound influence on homogeneous charge compression ignition combustion. When a thermal barrier coating is applied to the combustion chamber, the insulating effect magnifies th...
TL;DR: For low-reactivity fuels, this paper used diffusion-controlled combustion of a high-reactive fuel and offered high efficiencies because they combine lean combustion with a high compression ratio.
Abstract: Diesel engines use diffusion-controlled combustion of a high-reactivity fuel and offer high efficiencies because they combine lean combustion with a high compression ratio. For low-reactivity fuels...
TL;DR: All the methods introduced are found to be helpful to identify the turbulent structures responsible for cycle-to-cycle variability and can be equally applied to both experimental and numerical datasets to analyze turbulent fields in detail and to make comparisons.
Abstract: Experimental techniques like particle image velocimetry provide a powerful technical support for the analysis of the spatial and temporal evolution of the flow field in internal combustion engines....
TL;DR: In this article, the ignition and combustion characteristics of mixtures in a pre-chamber systolic engine were analyzed and shown to be similar to those of a conventional combustion engine.
Abstract: Pre-chamber jet ignition is a promising combustion technology to achieve fast combustion in natural gas engines. First, the ignition and combustion characteristics of mixtures in a pre-chamber syst...
TL;DR: Two kinds of cavitation may occur in mini-sac type diesel injectors: geometrical cavitation, which can usually be seen as a film-like structure in the nozzle, and filamen... as discussed by the authors.
Abstract: Two kinds of cavitation may occur in mini-sac type diesel injectors. The first is geometrical cavitation, which can usually be seen as a film-like structure in the nozzle. The second is the filamen...
TL;DR: The cavitating flow in diesel injector nozzles plays a vital role in spray atomization and formation of fuel-air mixture, since vortex-induced string cavitation has recently been found a much more...
Abstract: The cavitating flow in diesel injector nozzles plays a vital role in spray atomization and formation of fuel–air mixture, since vortex-induced string cavitation has recently been found a much more ...
TL;DR: In this article, a production grade engine was modified to operate in two combustion modes, namely conventional diesel combustion (CDC) and premixed charge compression ignition (PCCI) co...
Abstract: In this experimental study, a production grade engine was modified to operate in two combustion modes, namely conventional diesel combustion (CDC) and premixed charge compression ignition (PCCI) co...
TL;DR: In this article, the improvement of premixed ammonia/air combustion for internal combustion (SI) engines is discussed. But the use of ammonia in SI engines is not possible thanks to an ignition booster or promoter.
Abstract: Recent studies concluded that the use of ammonia in SI engines is possible thanks to an ignition booster or promoter. In this paper, the improvement of premixed ammonia/air combustion for internal ...
TL;DR: The U-type loop scavenging of a two-stroke diesel engine with two poppet valves is generally unsatisfactory as mentioned in this paper. But, the scavenging is becoming one of the determinants of twostroke engine performance.
Abstract: Scavenging is becoming one of the determinants of two-stroke engine performance. Efficiency of U-type loop scavenging of two-stroke diesel engine with two poppet valves is generally unsatisfactory ...
TL;DR: In this paper, the performance of lean-burn gasoline spark-ignition engines can be enhanced through hydrogen supplementation, thanks to its physicochemical properties, hydrogen supports the flame propagation and exte...
Abstract: Performance of lean-burn gasoline spark-ignition engines can be enhanced through hydrogen supplementation. Thanks to its physicochemical properties, hydrogen supports the flame propagation and exte...
TL;DR: In this article, the fuel injected on the fuel injector tip has been identified as a significant source of particulate emissions at some operating conditions of gasoline direct-injection engines.
Abstract: Gasoline fuel deposited on the fuel injector tip has been identified as a significant source of particulate emissions at some operating conditions of gasoline direct-injection engines. This work pr...
TL;DR: TJI is a promising strategy to ignite diluted air-fuel mixtures; this is usually generated by igniting a fraction of the mixture inside a small pre-chamber.
Abstract: Turbulent jet ignition (TJI) is a promising strategy to ignite diluted air-fuel mixtures; this is usually generated by igniting a fraction of the mixture inside a small pre-chamber. Nevertheless, t...