Analysis of Ignition Behavior in a Turbocharged Direct Injection Dual Fuel Engine Using Propane and Methane as Primary Fuels

Polk, A. C.; Gibson, C. M.; Shoemaker, N. T.; Srinivasan, K. K.; Krishnan, S. R.

doi:10.1115/1.4023482

Title: Analysis of Ignition Behavior in a Turbocharged Direct Injection Dual Fuel Engine Using Propane and Methane as Primary Fuels

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Abstract

This paper presents experimental analyses of the ignition delay (ID) behavior for diesel-ignited propane and diesel-ignited methane dual fuel combustion. Two sets of experiments were performed at a constant speed (1800 rev/min) using a 4-cylinder direct injection diesel engine with the stock ECU and a wastegated turbocharger. First, the effects of fuel-air equivalence ratios (© pilot ¼ 0.2-0.6 and © overall ¼ 0.2-0.9) on IDs were quantified. Second, the effects of gaseous fuel percent energy substitution (PES) and brake mean effective pressure (BMEP) (from 2.5 to 10 bar) on IDs were investigated. With constant © pilot (> 0.5), increasing © overall with propane initially decreased ID but eventually led to premature propane autoignition; however, the corresponding effects with methane were relatively minor. Cyclic variations in the start of combustion (SOC) increased with increasing © overall (at constant © pilot), more significantly for propane than for methane. With increasing PES at constant BMEP, the ID showed a nonlinear (initially increasing and later decreasing) trend at low BMEPs for propane but a linearly decreasing trend at high BMEPs. For methane, increasing PES only increased IDs at all BMEPs. At low BMEPs, increasing PES led to significantly higher cyclic SOC variations and SOCmore »« less

Authors:: Polk, A. C.; Gibson, C. M.; Shoemaker, N. T.; Srinivasan, K. K.; Krishnan, S. R.

Publication Date:: Fri May 24 00:00:00 EDT 2013

Research Org.:: Mississippi State Univ., Starkville, MS (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1079593

Report Number(s):: GO8602556
Journal ID: ISSN 0195-0738

DOE Contract Number:: FG36-06GO86025

Resource Type:: Journal Article

Journal Name:: Journal of Energy Resources Technology

Additional Journal Information:: Journal Volume: 135; Journal Issue: 3; Journal ID: ISSN 0195-0738

Country of Publication:: United States

Language:: English

Subject:: Auto-ignition; Brake mean effective pressures; Constant speed; Cyclic variations; Direct injection diesel engines; Dual fuel combustion; Experimental analysis; Fuel-air equivalence ratio; Gaseous Fuel; Ignition delays; Primary fuels; Start of combustion; Waste-gated turbocharger

Citation Formats


                    Polk, A. C., Gibson, C. M., Shoemaker, N. T., Srinivasan, K. K., and Krishnan, S. R. Analysis of Ignition Behavior in a Turbocharged Direct Injection Dual Fuel Engine Using Propane and Methane as Primary Fuels.  United States: N. p., 2013. 
        Web.  doi:10.1115/1.4023482.

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                    Polk, A. C., Gibson, C. M., Shoemaker, N. T., Srinivasan, K. K., & Krishnan, S. R. Analysis of Ignition Behavior in a Turbocharged Direct Injection Dual Fuel Engine Using Propane and Methane as Primary Fuels.  United States.  https://doi.org/10.1115/1.4023482

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                    Polk, A. C., Gibson, C. M., Shoemaker, N. T., Srinivasan, K. K., and Krishnan, S. R. 2013.  
        "Analysis of Ignition Behavior in a Turbocharged Direct Injection Dual Fuel Engine Using Propane and Methane as Primary Fuels".  United States.  https://doi.org/10.1115/1.4023482.  https://www.osti.gov/servlets/purl/1079593.

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@article{osti_1079593,

  title        = {Analysis of Ignition Behavior in a Turbocharged Direct Injection Dual Fuel Engine Using Propane and Methane as Primary Fuels},

  author       = {Polk, A. C. and Gibson, C. M. and Shoemaker, N. T. and Srinivasan, K. K. and Krishnan, S. R.},

  abstractNote = {This paper presents experimental analyses of the ignition delay (ID) behavior for diesel-ignited propane and diesel-ignited methane dual fuel combustion. Two sets of experiments were performed at a constant speed (1800 rev/min) using a 4-cylinder direct injection diesel engine with the stock ECU and a wastegated turbocharger. First, the effects of fuel-air equivalence ratios (© pilot ¼ 0.2-0.6 and © overall ¼ 0.2-0.9) on IDs were quantified. Second, the effects of gaseous fuel percent energy substitution (PES) and brake mean effective pressure (BMEP) (from 2.5 to 10 bar) on IDs were investigated. With constant © pilot (> 0.5), increasing © overall with propane initially decreased ID but eventually led to premature propane autoignition; however, the corresponding effects with methane were relatively minor. Cyclic variations in the start of combustion (SOC) increased with increasing © overall (at constant © pilot), more significantly for propane than for methane. With increasing PES at constant BMEP, the ID showed a nonlinear (initially increasing and later decreasing) trend at low BMEPs for propane but a linearly decreasing trend at high BMEPs. For methane, increasing PES only increased IDs at all BMEPs. At low BMEPs, increasing PES led to significantly higher cyclic SOC variations and SOC advancement for both propane and methane. Finally, the engine ignition delay (EID) was also shown to be a useful metric to understand the influence of ID on dual fuel combustion.},

  doi          = {10.1115/1.4023482},

  url          = {https://www.osti.gov/biblio/1079593},
  journal      = {Journal of Energy Resources Technology},

  issn         = {0195-0738},

  number       = 3,

  volume       = 135,

  place        = {United States},

  year         = {Fri May 24 00:00:00 EDT 2013},

  month        = {Fri May 24 00:00:00 EDT 2013}

}

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