An experimental evaluation of engine performance and emissions characteristics of a modified direct injection diesel engine operated in RCCI mode

Nguyen, Tien Duy; Anh, Trung Tran; Tran-Quang, Vinh; Nhat, Huy Bui; Duy, Vinh Nguyen

doi:10.3934/energy.2020.6.1069

Cited by 2 publications

(1 citation statement)

References 36 publications

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“…Hence, the RCCI has received widespread attention. Due to the higher compression ratios [8], leaner charges [9], and lower throttle losses [10], spark ignition engines and compression ignition engines are typically more efcient. However, the difculty of CIE is their increased emissions of particulate matter (PM) and NOx.…”

Section: Introductionmentioning

confidence: 99%

Response Analysis of an Experimental Study on the Effect of Speed and Premixed Fuel Ratio on Performance and Emissions in RCCI Engine

Disassa,

Ancha,

Nallamothu

et al. 2024

International Journal of Chemical Engineering

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Even though CI engines are more efficient than SI engines due to their ability to operate at a greater compression ratio, a leaner charge, and lower throttle losses, they have higher PM and nitrogen oxide emissions. The induction system modification with fuel port injection is used as a parameter in RCCI engine operations for controlling emission through in-cylinder charge reactivity and combustion phasing. By varying the amount of hydrous bioethanol in the premixed fuel injection ratio, the engine’s performance and emissions are greatly affected. In this study, an experimental investigation of a triple-fuel RCCI engine running on port-injected gasoline-bioethanol blend and direct-injected diesel fuel was conducted. Taguchi’s experimental design method was employed to assess the impact of various independent variables utilizing three set levels and two factors with the L9 orthogonal array. From the findings, the delta value shows the highest average response for each factor. Engine speed has the largest effect on the signal-to-noise ratio (SNR) with the (delta value of: 10.7446, rank = 1), and the delta value of 38.96, rank = 1, has the largest effect on the response of means at engine speeds of 3000 rpm. The premixed fuel ratio of G25BE75 (delta: 87.30, rank = 1) has the largest effect on the standard deviation. The lines are not parallel in all emission and performance cases except for Tb and CO2, which are close to parallel. The best means in engine speed and premixed blended fuel ratio were NOx, CO, HC, and brake power. At 3000 rpm, the speed had the larger main effect plots of SNR. The premixed fuel ratio of G25BE75 had higher main effect plots for means and standard deviations. The residues appear to have been dispersed normally based on a straight line by using a normal probability plot. The data are normally distributed, as demonstrated by the normal probability plot, and the factors had an impact on the response. Conferring to the experiment result, a high engine speed and higher ethanol content in the RCCI premixed fuel are preferred for reducing nitrogen oxides (NOx) and carbon dioxide (CO2), while unburned hydrocarbons (UHCs) and carbon monoxide (CO) showed a slight increase.

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Section: Introductionmentioning

confidence: 99%

Response Analysis of an Experimental Study on the Effect of Speed and Premixed Fuel Ratio on Performance and Emissions in RCCI Engine

Disassa,

Ancha,

Nallamothu

et al. 2024

International Journal of Chemical Engineering

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Effect of piston geometry design and spark plug position on the engine performance and emission characteristics

Tran

Nguyen

Duy

2023

AIMSE

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<abstract> <p>This paper investigates the influence of piston geometry design and spark plug position on the engine performance and emission characteristics at a range of speeds from 1200 rpm to 2200 rpm. Accordingly, the parameters of the indentation depth, the spark plug position, the location of the recess, and the engine's compression ratio are changed and evaluated. The concave center depth improved the mixture of air and fuel, increased power, and reduced fuel consumption. The power can be improved by up to 3% when the piston top recess is 25 mm. In addition, within a limited range, the combustion process and the engine's power and emission characteristics are enhanced when the engine's compression ratio rises. Increasing the depth of the depression on the top of the piston improves fluid flow in the cylinder, resulting in increased power, fuel efficiency, and emissions; however, the improvement between the indentations remains unclear.</p> </abstract>

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An experimental evaluation of engine performance and emissions characteristics of a modified direct injection diesel engine operated in RCCI mode

Cited by 2 publications

References 36 publications

Response Analysis of an Experimental Study on the Effect of Speed and Premixed Fuel Ratio on Performance and Emissions in RCCI Engine

Response Analysis of an Experimental Study on the Effect of Speed and Premixed Fuel Ratio on Performance and Emissions in RCCI Engine

Effect of piston geometry design and spark plug position on the engine performance and emission characteristics

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