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 language | English |
|---|---|
| Title of host publication | ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 |
| Pages | 765-773 |
| Number of pages | 9 |
| Volume | 4 |
| Edition | PARTS A AND B |
| DOIs | |
| Publication status | Published - 2012 |
| Event | ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States Duration: 9 Nov 2012 → 15 Nov 2012 |
Other
| Other | ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 |
|---|---|
| Country | United States |
| City | Houston, TX |
| Period | 9/11/12 → 15/11/12 |
Fingerprint
Keywords
- HCCI
- Ignition timing
- Modeling
- Physics-based
ASJC Scopus subject areas
- Mechanical Engineering
Cite this
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 proceeding › Conference contribution
}
TY - GEN
T1 - A physics-based modeling approach of a natural gas hcci engine
AU - Abdelgawad, Marwa W.
AU - Tafreshi, Reza
AU - Langari, Reza
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - HCCI
KW - Ignition timing
KW - Modeling
KW - Physics-based
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U2 - 10.1115/IMECE2012-88015
DO - 10.1115/IMECE2012-88015
M3 - Conference contribution
SN - 9780791845202
VL - 4
SP - 765
EP - 773
BT - ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
ER -