Impact of compression ratio and effect of biodiesel blends in performance, combustion and emission characteristics of VCR DI diesel engine

Vijayakumar, Subramanian; Paulisingarayar, S.; Anbarasu, A.; Vetrivelkumar, K.; Rajendran, Silambarasan

doi:10.1016/j.matpr.2020.06.182

Cited by 3 publications

(5 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This variation is induced by the improved combustion of the pilot fuel at higher FIP, thus generating higher in-cylinder pressure. The current study’s experimental results are consistent with those reported by many other researchers 15 , 16 …”

Section: Resultssupporting

confidence: 93%

“…The current study performance has the same considerations as reported by many researchers. 12 − 15 This is because brake power for TME, TME–diesel blends, and diesel is almost the same at any load condition. The diesel’s lower density, viscosity, and higher heating value give 100% combustion with low BSFC, compared to the TME blends.…”

Section: Resultsmentioning

confidence: 97%

“…The diesel’s lower density, viscosity, and higher heating value give 100% combustion with low BSFC, compared to the TME blends. Due to the increased density, viscosity, and decreased heating value with increased TME, complete agitation of fuel and air is not possible. , The start of the combustion of TME–TME diesel blends occurred very close to TDC because of the addition of comparatively low cetane number (25) fuel. This indicates that the ignition delay period was lower for neat diesel (cetane number 50).…”

Section: Resultsmentioning

confidence: 99%

“…Hence, the BTE can be improved with lower BSFC. 14 Vijaykumar et al 15 investigated the behavior of a variable CR (VCR) engine with the CR varying from 17 to 18 at an increasing step of 0.5 using mahua oil-blended biodiesel at different proportions. 15 The most favorable characteristics were noticed at a maximum CR of 18, which was not feasible to increase further due to vibration issues of the engine.…”

Section: Introductionmentioning

confidence: 99%

“… 14 Vijaykumar et al 15 investigated the behavior of a variable CR (VCR) engine with the CR varying from 17 to 18 at an increasing step of 0.5 using mahua oil-blended biodiesel at different proportions. 15 The most favorable characteristics were noticed at a maximum CR of 18, which was not feasible to increase further due to vibration issues of the engine. With an increase in CR from 16:1 to 18:1 in a CI engine employing hydrogen-enriched biogas diesel, Rocha et al 16 found a decrease in HC, CO, and smoke opacity emissions, while increasing the BTE and ignition delay.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Preparation, Characterization, and Evaluation of Emission and Performance Characteristics of Thumba Methyl Ester (Biodiesel)

Patil¹,

Baral

Mohanty

et al. 2022

ACS Omega

View full text Add to dashboard Cite

Thumba oil with a higher triglyceride content can be a promising feed for synthesizing a fatty acid alkyl ester as an alternative to pure diesel. The current study investigates the emission and performance characteristics of thumba methyl ester (TME) in compression ignition (CI) engines corresponding to variable loads and compression ratios (CRs), respectively. TME was prepared at an optimized pressure of 5 bar by hydrodynamic cavitation. The properties of TME–diesel blends with varied volume percentages of biodiesel, such as 5, 10, 15, 20, and 25, denoted B5, B10, B15, B20, and B25, respectively, were compared to pure TME (100% biodiesel) and pure diesel (100%). The B20 biodiesel blend has been observed as the optimal one based on the lower emission composition and higher brake thermal efficiency. For B20 fuel, injection at 23° before the top dead center (TDC) and a CR of 18 resulted in the lowest brake specific fuel consumption of 0.32 kg/kW h and a maximum brake thermal efficiency of 36.5%. Using titanium dioxide nanoparticles in the pre-stage of TME manufacturing has ultimately reduced the nitrogen oxide, hydrocarbon, and carbon monoxide emissions. At a CR of 18 and advanced injection 23° before TDC for a CI engine, TME derived from thumba oil has the potential to be a viable diesel substitute.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 97%