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Dependency on renewable energy resources is unavoidably attributed to the energy crisis and limited conventional fuel reserves. Despite this, combustion-driven technologies alarmingly contribute to 80% of net high-grade energy demand, chiefly from the transportation sector (Paykani et al., Prog Energy Combust Sci 90:100995, 2022). Alternate fuel utilization in the established IC engine technology via hybrid mode application is a potential solution, however, this demands more inexpensive explorations. Therefore, this investigation incorporates Quasi-dimensional thermodynamic modelling (QDTM) in integration with two-zone combustion model to predict dual-fuel (DF) mode spark-ignition (SI) engines’ performance and emission characteristics. The developed DF-SI engine simulation considers fuel blends of producer gas (PG) and methane. Towards apprehending the waste-to-energy potential, sewage sludge-based producer gas (SSPG) is considered. The simulation model is first validated using a referred-experimental result and then is utilized to capture the impacts of varying inlet-valve closure (IVC) delays and ignition-start timings (IT), as the control parameters. Impacts on output parameters, namely indicated thermal efficiency (ITE) with CO emission, and brake power (BP) with NO emission, were studied simultaneously. Miller cycle-based IVC-delay resulted in a 9.66% ITE rise, and 29.31% derated BP. Moreover, IT advancement showed a 23.63% and 54.3% decrease in CO and NO emissions, respectively. RSM-generated regression models and EXCEL 3D-surface plots intercepted the impact.

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Parametric Impact Analysis of Delayed Inlet-Valve Closure and Ignition Timings on Methane and Sewage Sludge Producer Gas Blend-Operated SI Engine Using Numerical Modelling

  • 会议论文

  • 发表日期：

    2026年

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  • Priyaranjan Jena,
  • Pushpendu Kasaudhan,
  • Jeewan Vachan Tirkey

摘要

Dependency on renewable energy resources is unavoidably attributed to the energy crisis and limited conventional fuel reserves. Despite this, combustion-driven technologies alarmingly contribute to 80% of net high-grade energy demand, chiefly from the transportation sector (Paykani et al., Prog Energy Combust Sci 90:100995, 2022). Alternate fuel utilization in the established IC engine technology via hybrid mode application is a potential solution, however, this demands more inexpensive explorations. Therefore, this investigation incorporates Quasi-dimensional thermodynamic modelling (QDTM) in integration with two-zone combustion model to predict dual-fuel (DF) mode spark-ignition (SI) engines’ performance and emission characteristics. The developed DF-SI engine simulation considers fuel blends of producer gas (PG) and methane. Towards apprehending the waste-to-energy potential, sewage sludge-based producer gas (SSPG) is considered. The simulation model is first validated using a referred-experimental result and then is utilized to capture the impacts of varying inlet-valve closure (IVC) delays and ignition-start timings (IT), as the control parameters. Impacts on output parameters, namely indicated thermal efficiency (ITE) with CO emission, and brake power (BP) with NO emission, were studied simultaneously. Miller cycle-based IVC-delay resulted in a 9.66% ITE rise, and 29.31% derated BP. Moreover, IT advancement showed a 23.63% and 54.3% decrease in CO and NO emissions, respectively. RSM-generated regression models and EXCEL 3D-surface plots intercepted the impact.