Energy distribution analysis in boosted HCCI-like / LTGC engines – Understanding the trade-offs to maximize the thermal efficiency

Dernotte, Jeremie; Dec, John E.; Ji, Chunsheng

doi:10.4271/2015-01-0824

Title: Energy distribution analysis in boosted HCCI-like / LTGC engines – Understanding the trade-offs to maximize the thermal efficiency

Abstract

A detailed understanding of the various factors affecting the trends in gross-indicated thermal efficiency with changes in key operating parameters has been carried out, applied to a one-liter displacement single-cylinder boosted Low-Temperature Gasoline Combustion (LTGC) engine. This work systematically investigates how the supplied fuel energy splits into the following four energy pathways: gross-indicated thermal efficiency, combustion inefficiency, heat transfer and exhaust losses, and how this split changes with operating conditions. Additional analysis is performed to determine the influence of variations in the ratio of specific heat capacities (γ) and the effective expansion ratio, related to the combustion-phasing retard (CA50), on the energy split. Heat transfer and exhaust losses are computed using multiple standard cycle analysis techniques. Furthermore, the various methods are evaluated in order to validate the trends.

Authors:

Dernotte, Jeremie ^[1]; Dec, John E. ^[1]; Ji, Chunsheng ^[1]

Sandia National Lab. (SNL-CA), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Tue Apr 14 00:00:00 EDT 2015

Research Org.:: Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Sponsoring Org.:: USDOE Office of Secretary of Energy (S)

OSTI Identifier:: 1237374

Report Number(s):: SAND-2015-1283J
Journal ID: ISSN 1946-3944; 567166

Grant/Contract Number:: AC04-94AL85000

Resource Type:: Accepted Manuscript

Journal Name:: SAE International Journal of Engines (Online)

Additional Journal Information:: Journal Name: SAE International Journal of Engines (Online); Journal Volume: 8; Journal Issue: 3; Journal ID: ISSN 1946-3944

Publisher:: SAE International

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 33 ADVANCED PROPULSION SYSTEMS; HCCI engines; combustion / combustion processes

Citation Formats


                    Dernotte, Jeremie, Dec, John E., and Ji, Chunsheng. Energy distribution analysis in boosted HCCI-like / LTGC engines – Understanding the trade-offs to maximize the thermal efficiency.  United States: N. p., 2015. 
Web.  doi:10.4271/2015-01-0824.

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                    Dernotte, Jeremie, Dec, John E., & Ji, Chunsheng. Energy distribution analysis in boosted HCCI-like / LTGC engines – Understanding the trade-offs to maximize the thermal efficiency.  United States.  https://doi.org/10.4271/2015-01-0824

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                    Dernotte, Jeremie, Dec, John E., and Ji, Chunsheng. Tue .  
"Energy distribution analysis in boosted HCCI-like / LTGC engines – Understanding the trade-offs to maximize the thermal efficiency".  United States.  https://doi.org/10.4271/2015-01-0824.  https://www.osti.gov/servlets/purl/1237374.

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@article{osti_1237374,

  title        = {Energy distribution analysis in boosted HCCI-like / LTGC engines – Understanding the trade-offs to maximize the thermal efficiency},

  author       = {Dernotte, Jeremie and Dec, John E. and Ji, Chunsheng},

  abstractNote = {A detailed understanding of the various factors affecting the trends in gross-indicated thermal efficiency with changes in key operating parameters has been carried out, applied to a one-liter displacement single-cylinder boosted Low-Temperature Gasoline Combustion (LTGC) engine. This work systematically investigates how the supplied fuel energy splits into the following four energy pathways: gross-indicated thermal efficiency, combustion inefficiency, heat transfer and exhaust losses, and how this split changes with operating conditions. Additional analysis is performed to determine the influence of variations in the ratio of specific heat capacities (γ) and the effective expansion ratio, related to the combustion-phasing retard (CA50), on the energy split. Heat transfer and exhaust losses are computed using multiple standard cycle analysis techniques. Furthermore, the various methods are evaluated in order to validate the trends.},

  doi          = {10.4271/2015-01-0824},

  journal      = {SAE International Journal of Engines (Online)},

  number       = 3,

  volume       = 8,

  place        = {United States},

  year         = {Tue Apr 14 00:00:00 EDT 2015},

  month        = {Tue Apr 14 00:00:00 EDT 2015}

}

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Journal Article:

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Works referencing / citing this record:

Impact of injection strategies on combustion characteristics, efficiency and emissions of gasoline compression ignition operation in a heavy-duty multi-cylinder engine
journal, September 2018

Wang, Buyu; Pamminger, Michael; Vojtech, Ryan
International Journal of Engine Research, Vol. 21, Issue 8
DOI: 10.1177/1468087418801660

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Title: Energy distribution analysis in boosted HCCI-like / LTGC engines – Understanding the trade-offs to maximize the thermal efficiency

Abstract

Citation Formats

Impact of injection strategies on combustion characteristics, efficiency and emissions of gasoline compression ignition operation in a heavy-duty multi-cylinder engine journal, September 2018

Impact of injection strategies on combustion characteristics, efficiency and emissions of gasoline compression ignition operation in a heavy-duty multi-cylinder engine
journal, September 2018