A physics-based modeling approach of a natural gas hcci engine

Marwa W. Abdelgawad, Reza Tafreshi, Reza Langari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Homogeneous Charge Compression Ignition (HCCI) Engines hold promises of being the next generation of internal combustion engines due to their ability to produce high thermal efficiencies, in addition to low nitric oxides and particulate matter. HCCI combustion is achieved through the auto-ignition of a compressed homogenous fuel-air mixture, thus making it a "fusion" between spark-ignition and compression-ignition engines. The main challenge in developing HCCI engines is the absence of a combustion trigger hence making the control of combustion timing difficult. To be able to control ignition timing, a physics-based model is developed to model the full HCCI engine cycle while taking into consideration cycle-to-cycle transitions. Exhaust Gas Recirculation is used to control combustion timing while the temperature at intake valve closure will serve as the parameter that represents the desired ignition timing. The Modified Knock Integral model defines the necessary relationship between ignition timing and temperature at intake valve closure. Validation of the developed model is performed by determining the ignition timing under varying conditions. Results are shown to be in accordance with data acquired from a single-cylinder model developed using a sophisticated engine simulation program, GT-Power.

Original languageEnglish
Title of host publicationASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
Pages765-773
Number of pages9
Volume4
EditionPARTS A AND B
DOIs
Publication statusPublished - 2012
EventASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
Duration: 9 Nov 201215 Nov 2012

Other

OtherASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
CountryUnited States
CityHouston, TX
Period9/11/1215/11/12

Fingerprint

Gas engines
Ignition
Natural gas
Physics
Engines
Intake valves
Combustion knock
Exhaust gas recirculation
Nitric oxide
Engine cylinders
Internal combustion engines
Electric sparks
Fusion reactions

Keywords

  • HCCI
  • Ignition timing
  • Modeling
  • Physics-based

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Abdelgawad, M. W., Tafreshi, R., & Langari, R. (2012). A physics-based modeling approach of a natural gas hcci engine. In ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 (PARTS A AND B ed., Vol. 4, pp. 765-773) https://doi.org/10.1115/IMECE2012-88015

A physics-based modeling approach of a natural gas hcci engine. / Abdelgawad, Marwa W.; Tafreshi, Reza; Langari, Reza.

ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012. Vol. 4 PARTS A AND B. ed. 2012. p. 765-773.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abdelgawad, MW, Tafreshi, R & Langari, R 2012, A physics-based modeling approach of a natural gas hcci engine. in ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012. PARTS A AND B edn, vol. 4, pp. 765-773, ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012, Houston, TX, United States, 9/11/12. https://doi.org/10.1115/IMECE2012-88015
Abdelgawad MW, Tafreshi R, Langari R. A physics-based modeling approach of a natural gas hcci engine. In ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012. PARTS A AND B ed. Vol. 4. 2012. p. 765-773 https://doi.org/10.1115/IMECE2012-88015
Abdelgawad, Marwa W. ; Tafreshi, Reza ; Langari, Reza. / A physics-based modeling approach of a natural gas hcci engine. ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012. Vol. 4 PARTS A AND B. ed. 2012. pp. 765-773
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