Showing papers on "Thermal efficiency published in 2022"
TL;DR: In this article, a review of the factors that induce backfire in hydrogen-injected internal combustion engines is presented, including improper intake valve timing and fuel injection timing, high fuel-air equivalence ratios, and improper hydrogen distribution around intake valve seats.
89 citations
TL;DR: In this article, the effect of hydrogen addition on the flame propagation, emissions formation, energy balance and the relationships between exhaust emissions and mediate species during flame propagation in the natural gas (NG) SI engine was investigated.
82 citations
TL;DR: In this article , backfire is induced by high temperature residual exhaust gas, hot spots, and abnormal discharge of spark plugs; all the factors causing pre-ignition of hydrogen-air mixture promote the backfire occurrences.
79 citations
TL;DR: In this article, the effects of advanced injection timing combined with dual-fuel mode on the diesel engine's overall performance, emission, and combustion characteristics under various loading conditions were investigated.
55 citations
TL;DR: In this article , the effects of advanced injection timing combined with dual-fuel mode on the diesel engine's overall performance, emission, and combustion characteristics under various loading conditions were investigated.
49 citations
TL;DR: In this article , the effect of hydrogen addition with biodiesel/vegetable oil from various sources in a Compression Injection (CI) engine was evaluated. And the results showed that hydrogen induction in general improves the engine performance as compared to biodiesel and vegetable oil.
46 citations
TL;DR: In this paper , the best performance, combustion and emission characteristics of a marine engine fueled with hydrogen (5%, 10% and 15% energy fraction), water (2, 4 and 6 wt%) and rapeseed methyl ester (RME) blend fuel by the multi-objective optimization was achieved.
44 citations
TL;DR: In this paper , the behavior analysis of a CI engine powered by diesel, Euglena Sanguinea (ES), and their blends (ES20D80, ES40D60, ES60D40, ES80D20) is presented.
44 citations
TL;DR: In this paper , the electrical and thermal performance of an unglazed photovoltaic thermal (PVT) system integrated with a serpentine coil configured sheet and tube thermal absorber setup was evaluated using water and copper oxide-based nanofluid.
43 citations
TL;DR: In this article , the authors investigated the RCCI mode of operation in a light-duty diesel engine by introducing Cottonseed oil biodiesel as high reactivity fuel directly into the combustion chamber and n-pentanol as low-reactivity fuel intake.
42 citations
TL;DR: In this paper , a new ensemble approach called Boosted Regression Trees (BRT) was utilized to model the performance and emissions of a variable compression ratio diesel engine in dual-fuel mode.
TL;DR: In this paper , a system including a fuel reformer and a natural gas engine with a high-pressure EGR of 20% was proposed to achieve the complementary advantages between EGR and fuel reforming.
TL;DR: In this paper, the authors used response surface methodology (RSM) to determine the optimum engine operating condition of dual-fired engines using low grade coal-based producer gas (PG) and diesel.
TL;DR: In this article , the performance of the dual-fuel engine based on brake thermal efficiency (BTE) and volumetric efficiency remains significantly lower compared to a normal diesel engine, and the emission characteristics indicated a trade-off between nitrogen oxides and hydrocarbon emissions, and reduced nitrogen Oxides, particulate matter, and smoke were influenced by engine load, blend ratio, and injection timing.
TL;DR: In this article , the use of thermoelectric generators for internal combustion engine waste heat recovery is discussed, including the power output and parasitic losses, as well as the gain in efficiency and reduction in fuel consumption.
TL;DR: In this paper , a multi-layer perceptron network was employed to develop an Artificial Neural Network (ANN) based prognostic model using the experimental data, which was used to estimate brake thermal efficiency, biogas flow rates, peak in-cylinder pressure, carbon dioxide, unburned hydrocarbons, oxides of nitrogen, and carbon monoxide.
TL;DR: In this article , the authors used response surface methodology (RSM) to determine the optimum engine operating condition of dual-fired engines using low grade coal-based producer gas (PG) and diesel.
TL;DR: In this article, a review of the types of alternative fuels used for the past 30 years is presented, which includes the recent types of biofuels (especially biodiesel) and their blends with studies on the performances and the exhaust emissions for different engines.
TL;DR: In this article , the performance of a diesel engine via the use of a thermal barrier-coated piston that works on biodiesel mixes was investigated. And the performance was compared to pure diesel in terms of performance and emissions, and the blend ratio was improved using a design of experiment tool.
Abstract: Energy conservation and management have become critical industrial activities, since energy expenses account for a significant portion of production costs. This proactive strategy has had an effect on worldwide energy consumption trends. Integration of thermal barrier coatings into engine design is necessary to solve efficiency concerns, and this coating technology has the potential to increase engine power while lowering specific fuel consumption. In a similar line, biodiesel has been presented as a possible substitute to diesel since it is nontoxic and sourced from renewable energy sources. The present study aims to enhance the performance of a diesel engine via the use of a thermal barrier-coated piston that works on biodiesel mixes. Due to its outstanding thermal insulation qualities, yttria-stabilized zirconia is the preferred material for thermal barrier coatings. Brake thermal efficiency for B20E15 is about 4% better than diesel and for B20E05 and B20E15 is about 4.6% and 13.5% less fuel consumption. CO and HC emissions were reduced by 6% to 8% on average with the B20 blends. Biodiesel blends were compared to pure diesel in terms of performance and emissions, and the blend ratio was improved using a design of experiment tool.
TL;DR: In this article, the performance and emulsion characteristics of the biodiesel extracted from spirulina microalgae by adding little dosage of nanoparticles as a catalyst for the improved performance overall.
TL;DR: In this article , the authors focused on using dual-fuel such as Mahua oil biodiesel and biogas in a diesel engine to analyze performance and emission by varying compression ratio (CR) and engine loads.
TL;DR: In this article , the impact of using different hydrogen rations on combustion behaver, engine performance, and emission characteristics in a dual fuel compressed ignition (CI) diesel engine was investigated.
TL;DR: In this article, the combustion, performance, and emission results of the HCCI engine under different fuel and engine parameters conditions were examined experimentally and statistically, and the effective torque indicated thermal efficiency, maximum pressure increase rate, COVimep, HC, CO, and NOx values were examined.
TL;DR: In this paper, the effects of TBCs and their independent thermophysical properties on low-temperature combustion (LTC) have been systematically explored, and the results showed that the optimal coating configuration for kinetically-controlled LTC is a combination of the lowest k, the thickest coating before reaching the limit and the lowest s.
TL;DR: In this paper , an experimental study was conducted by using the tire pyrolysis oil (TPO), biodiesel and diesel blended fuel to compare the combustion, performance, and emission characteristics in the multi-cylinder high-pressure common-rail diesel engine.
TL;DR: In this article , the combustion, performance, and emission results of the HCCI engine under different fuel and engine parameters conditions were examined experimentally and statistically, and it was concluded that the optimum response parameters, engine speed was 1262.44 rpm, excess air ratio was 1.91631, and was obtained by using F30 fuel.
TL;DR: In this paper , the synthesis of graphene oxide (GO) nanoparticles was investigated and the comprehensive investigation of their use along with the waste cooking oil methyl ester (WCO) and diesel fuel blend on combustion, injection, performance, and emission characteristics of a diesel engine under varying engine loads from 3 to 12 Nm with the gaps of 3 Nm at a fixed speed of 2400 rpm.
TL;DR: In this paper , a review of the types of alternative fuels used for the past 30 years is presented, which includes the recent types of biofuels (especially biodiesel) and their blends with studies on the performances and the exhaust emissions for different engines.
TL;DR: In this article, the effect of forced cooling enhancements such as baffles and fins on the performance of solar photovoltaic thermal collectors (PV/T) was investigated.