NOx and CO gas emissions in collective transport buses to diesel S50 and S10 with EGR system added with dienitro

Suski, Cássio Aurélio; Mader, Michelle Maruska

doi:10.1007/s11356-020-08108-5

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…The HRR for B20 with 5%, 10% and 15% EGR is found to be 48 kJ/m 3 °CA, 45 kJ/m 3 °CA and 38 kJ/m 3 °CA respectively, whereas for diesel and B20 without EGR is 54 kJ/m 3 °CA and 60 kJ/m 3 °CA respectively at full throttle. The heat energy absorbed by the exhaust gases during combustion, the HRR decreased (Suski and Mader 2020). The reduction in HRR may be due to the absorption of heat by the exhaust gas during the combustion process, which consequently decreases premixed combustion and hence decreased HRR compared to diesel and B20 blends without EGR at full throttle.…”

Section: Heat Release Ratementioning

confidence: 99%

Thermal and Chemical Exhaust Gas Recirculation Potential of Punnai Oil Biodiesel Fuelled Diesel Engine For Environmental Sustainability

Bibin¹,

Devan²,

Sheeja³

et al. 2022

Preprint

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Pollution from diesel engines affects negatively the environment. As a result, there is a worldwide concern about reducing the pollutants emitted by diesel engines. In comparison to diesel fuel, biodiesel combustion produces reduced carbon monoxide (CO2) and unburned hydrocarbon (UHC) emissions, but higher nitrogen oxides (NOx) emissions. The current study is to investigate the thermal and chemical effect of exhaust gas recirculation (EGR) on features of a diesel engine for environmental sustainability. The punnai oil was produced from kernels of punnai seeds and transesterified in two phases using alcohol with the existence of a catalyst. The higher viscosity of punnai oil biodiesel is diluted by mixing it with diesel fuel. Our previous investigation indicated that neat punnai oil biodiesel is a potential fuel; however, the findings showed that the addition of diesel is necessary to obtain acceptable engine performance. In this study, punnai oil biodiesel was mixed at a rate of 20% with diesel (B20) and run in a diesel engine with varied EGR rates under five different engine loads. This combined impact enhanced the maximum heat release rate (HRR) and maximum combustion pressure, according to the findings. The premixed burning fractions were commonly higher at all engine loads, whereas the diffusion combustion fractions were lower. When the centre of the HRR changed toward the top dead centre (TDC), combustion durations remained rather constant. The experimental results revealed B20 blend at 10% EGR flow rate produced 6.57% lower BTE, 37.04% higher BSEC, 2.47% higher EGT, 5.13% lower CO, 31.11% higher CO2, 3.13% higher UHC, 8.36% lower NOx and 4% higher smoke opacity when compared with diesel in a standard diesel engine.

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Section: Heat Release Ratementioning

confidence: 99%