Pollutant Emissions and Combustion Efficiency Assessment of Engines Using Biodiesel

Paredes-Rojas, Juan Carlos; Miguel, Christopher René Torres-San; Medina, R.; Leal-Naranjo, José-Alfredo; Hernández, Fidel de la Cruz Hernández; Costa‐Castelló, Ramon

doi:10.3390/app10238646

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…Nevertheless, we cannot exclude a possible effect of the higher FAME content and the higher density in the 2019 ILCE on NO x and CO 2 [29][30][31]. Measurable differences have been reported between no, 5%, or 10% biodiesel content in the fuel [32], or even between 2% and 4% for NO x [33].…”

Section: Discussionmentioning

confidence: 92%

Measurements of the Emissions of a “Golden” Vehicle at Seven Laboratories with Portable Emission Measurement Systems (PEMS)

et al. 2021

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In the last years, the in-use emissions of vehicles are measured on the road with portable emissions measurement systems (PEMS). PEMS cannot measure as accurately as the laboratory grade equipment, and studies on their measurement uncertainty have continued since their appearance in the market. In this study we compared PEMS to laboratory grade equipment in Italian laboratories testing a diesel “Golden” (i.e., reference) vehicle for two consecutive years. The results showed equal means of PEMS and laboratory grade equipment for carbon dioxide (CO2), nitrogen oxides (NOx), and particle number (PN), with a variability of ±5 g/km for CO2, ±10 mg/km for NOx, and ±1 × 1011 p/km for PN, which further decreased in the second year. For carbon monoxide (CO), the PEMS were on average 5–20 mg/km higher than the bags (variability ±40 mg/km). The main conclusion of this study is that PEMS are accurate under controlled laboratory ambient conditions, without any indications of significant bias.

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Section: Discussionmentioning

confidence: 92%

Measurements of the Emissions of a “Golden” Vehicle at Seven Laboratories with Portable Emission Measurement Systems (PEMS)

et al. 2021

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“…The results of other studies on combustion simulations using diesel and biofuels showed a reduction in pollutant gases, with a 23% reduction in H 2 O, 13% in CO 2 , 21% in O 2 , and 21% in N 2 compared with commercial diesel [ 48 ]. This demonstrates the reduction in gases when using biodiesel in combustion [ 49 ].…”

Section: Resultsmentioning

confidence: 99%

Redesign of a Piston for a Diesel Combustion Engine to Use Biodiesel Blends

et al. 2021

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Biofuels represent an energy option to mitigate polluting gases. However, technical problems must be solved, one of them is to improve the combustion process. In this study, the geometry of a piston head for a diesel engine was redesigned. The objective was to improve the combustion process and reduce polluting emissions using biodiesel blends as the fuel. The methodology used was the mechanical engineering design process. A commercial piston (base piston) was selected as a reference model to assess the piston head’s redesign. Changes were applied to the profile of the piston head based on previous research and a new model was obtained. Both models were evaluated and analyzed using the finite element method, where the most relevant physical conditions were temperature and pressure. Numerical simulations in the base piston and the new piston redesign proposal presented similar behaviors and results. However, with the proposed piston, it was possible to reduce the effort and the material. The proposed piston profile presents adequate results and behaviors. In future, we suggest continuing conducting simulations and experimental tests to assess its performance.

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“…Several works are available in the literature on the use of biodiesel in compression ignition (CI) engines for applications in the automotive field and small power generation [5,[20][21][22]. Figure 1 highlights that the number of scientific publications has been growing at a high rate for the last 10 years.…”

Section: Introductionmentioning

confidence: 99%

Energy and Economic Investigation of a Biodiesel-Fired Engine for Micro-Scale Cogeneration

et al. 2021

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The work aims at investigating the techno-economic performance of a biodiesel micro combined heat and power (CHP) system for residential applications. The CHP unit is based on a direct-injection compression ignition engine providing 6.7 kWel and 11.3 kWth. A 0D model is developed and validated to characterise the behaviour of the biodiesel-fired engine at full and partial load in terms of efficiency, fuel consumption, and emissions. Furthermore, non-dimensional polynomial correlations are proposed to foresee the performance of biodiesel-fuelled engines for micro-CHP applications at partial loads. Afterwards, the CHP system is adopted to satisfy the electric and thermal demand of domestic users in Southern Italy. To this purpose, a parametric analysis is performed considering a different number of apartments and operating strategies (electric-driven and thermal-driven). A bi-variable optimisation based on the primary energy saving (PES) index and payback period (PBT) permits selecting the thermal-driven strategy and five apartments as the most suitable solution. The optimal PBT and PES are equal to 5.3 years and 22.4%, respectively. The corresponding annual thermal self-consumption reaches 81.3% of the domestic request, and the thermal surplus is lower than 8%. Finally, a sensitivity analysis is adopted to define the influence of the costs of energy vectors and a cogeneration unit on the economic feasibility of the biodiesel CHP system. The analysis highlights that the investigated apparatus represents an attractive option to satisfy the energy requests in micro-scale applications, providing valuable energy and economic advantages compared to traditional energy production.

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Pollutant Emissions and Combustion Efficiency Assessment of Engines Using Biodiesel

Cited by 8 publications

References 28 publications

Measurements of the Emissions of a “Golden” Vehicle at Seven Laboratories with Portable Emission Measurement Systems (PEMS)

Measurements of the Emissions of a “Golden” Vehicle at Seven Laboratories with Portable Emission Measurement Systems (PEMS)

Redesign of a Piston for a Diesel Combustion Engine to Use Biodiesel Blends

Energy and Economic Investigation of a Biodiesel-Fired Engine for Micro-Scale Cogeneration

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