Abstract
The engine researchers and auto makers are putting out significant effort to develop an alternative to petroleum fueled internal combustion (IC) engines for the production of energy in the automotive. Various emerging technologies like electric vehicles (EVs), fuel cells, hydrogen fueled engines etc. are being used as alternative option for IC engines. Biofuels utilization have shown advantages in terms of minimum modification in the existing engine technologies. On the other hand, spark ignition (SI) engine is being used for two-wheelers, lawn movers, aircraft engines, pum** and electricity generating engines and it may be challenging to replace these working engines in short time and it is expected that SI engine would continue to serve as power generating unit for the coming couple of decades. Alcohols have been treated as alternative fuel for internal combustion engines for a long time especially in SI engines by blending. However, alcohols have a lot of potential to be utilized independently in SI engines. In the present study, a detailed modeling work would be performed to investigate the effect of injection timings on the methanol fueled direct injection (DI) SI engine through one dimensional (1-D) simulations. This study suggested as the start of injection (SOI) situation retarded, the heat release rate (HRR) curve shifted to the left. There is hardly any difference in NOx emission depending on injection timing. With a −31° CA SOI at 3.5 kJ fuel energy content, there is a significant quantity of HC observed due to lower fuel efficiency at much advanced SOI conditions.
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Abbreviations
- IC:
-
Internal combustion
- SI:
-
Spark ignition
- CFD:
-
Computational fluid dynamics
- MVEM:
-
Mean value engine model
- DI:
-
Direct injection
- DoE:
-
Design of experiment
- TDC:
-
Top dead center
- SOI:
-
Start of injections
- EVs:
-
Electric vehicles
- IVC:
-
Inlet valve close
- EVO:
-
Exhaust valve open
- HRR:
-
Heat release rate
- CPOA:
-
Cylinder pressure analysis mode
- 1-D:
-
One dimensional
- EGR:
-
Exhaust gas recirculation
- SPI:
-
Stochastic pre-ignition
- HCCI:
-
Homogeneous charge compression ignition
- URANS:
-
Unsteady reynolds averaged Navier–Stokes
- 0-D:
-
Zero dimensional
- 3-D:
-
Three dimensional
- BSFC:
-
Break specific fuel consumption
- SITurb:
-
Spark-ignition turbulent flame model
- M + P:
-
Measured and predicted
- SOC:
-
Start of combustion
- CA2:
-
The crank angle at which 2% of the total heat has released
- CA90:
-
The crank angle at which 90% of the total heat has released
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Kumar Sahu, V., Singh, I., Dhar, A., Kumar, P., Chandra Shukla, P. (2022). Investigation on the Effect of Injection Timings on Combustion, Performance and Emissions of a Pure Methanol Fuelled DISI Engine Through 1-D Simulations. In: Agarwal, A.K., Kumar, D., Sharma, N., Sonawane, U. (eds) Engine Modeling and Simulation. Energy, Environment, and Sustainability. Springer, Singapore. https://doi.org/10.1007/978-981-16-8618-4_11
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