|
|
Applying the multi-zone model in predicting the
operating range of HCCI engines |
Ming JIA1,Maozhao XIE1,Zhijun PENG2, |
1.School of Energy and
Power Engineering, Dalian University of Technology, Dalian 116024,
China; 2.School of Engineering
and Design, University of Sussex, Brighton, BN1 9RH, UK; |
|
|
Abstract In this paper, a multi-zone model is developed to predict the operating range of homogeneous charge compression ignition (HCCI) engines. The boundaries of the operating range were determined by knock (presented by ringing intensity), partial burn (presented by combustion efficiency), and cycle-to-cycle variations (presented by the sensitivity of indicated mean effective pressure to initial temperature). By simulating an HCCI engine fueled with iso-octane, the knock and cycle-to-cycle variations predicted by the model showed satisfactory agreement with measurements made under different initial temperatures and equivalence ratios; the operating range was also well reproduced by the model. Furthermore, the model was applied to predict the operating range of the HCCI engine under different engine speeds by varying the intake temperatures and equivalence ratios. The potential to extend the operating range of the HCCI engine through two strategies, i.e., variable compression ratio and intake pressure boosting, was then investigated. Results indicate that the ignition point can be efficiently controlled by varying the compression ratio. A low load range can be extended by increasing the intake temperature while reducing the compression ratio. Higher intake temperatures and lower compression ratios can also extend the high load range. Boosting intake pressure is helpful in controlling the combustion of the HCCI engine, resulting in an extended high load range.
|
Keywords
homogeneous charge compression ignition (HCCI) engine
multi-zone
operating range
|
Issue Date: 05 September 2010
|
|
|
Stanglmaier R H, Roberts C E. Homogeneous charge compression ignition (HCCI): Benefits, compromises,and future engine applications. SAE Paper 1999-01-3682, 1999
|
|
Zhao F Q, Asmus T W, Assanis D N, Dec J E, Eng J A, Najt P M. Homogeneous charge Compression Ignition (HCCI) Engines:Key Research And Development Issues. Warrendate, PA: SAE International, 2003
|
|
Thring R H. Homogeneous charge compression ignition (HCCI) engines. SAE Paper 892068, 1989
|
|
Oakley A, Zhao H, Ladommatos N, Ma T. Dilution effects on the controlled auto-ignition (CAI)combustion of hydrocarbon and alcohol fuels. SAE Paper 2001-01-3606, 2001
|
|
Koopmans L, Denbratt I. Afour-stroke camless engine, operated in homogeneous charge compressionignition mode with commercial gasoline. SAE Paper 2001-01-3610, 2001
|
|
Zhao H, Li J, Ladommatos N. Performance and analysisof a 4-stroke multi-cylinder gasoline engine with CAI combustion. SAE Paper 2002-01-0420, 2002
|
|
Yang J, Culp T, Kenney T. Development of a gasoline engine systemusing HCCI technology―the concept and the test results. SAE Paper 2002-01-2832, 2002
|
|
Yao M F, Zhang B, Zheng Z Q, Chen Z. Experimentalstudy on homogeneous charge compression ignition combustion with primaryreference fuel. Combustion Science andTechnology, 2007, 179(12): 2539―2559
doi: 10.1080/00102200701486907
|
|
Hou Y C, Lu X C, Zu L L, Ji L B. Effect of high-octane oxygenated fuels on n-heptane-fueled HCCI combustion. Energy & Fuels, 2006, 20(4): 1425―1433
doi: 10.1021/ef050433t
|
|
Yang J. Expanding the operating range of homogeneous charge compressionignition-spark ignition dual-mode engines in the homogeneous chargecompression ignition mode. InternationalJournal of Engine Research, 2005, 6(4): 279―288
doi: 10.1243/146808705X30422
|
|
Smith J R, Aceves S M, Westbrook C, Pitz W. Modeling of homogeneous charge compression ignition (HCCI)of methane. ASME Paper 1997-ICE-68, 1997
|
|
Aichlmayr H T, Kittelson D B, Zachariah M R. Miniature free-piston homogeneouscharge compression ignition engine-compressor concept―partII: Modeling HCCI combustion in small scales with detailed homogeneousgas phase chemical kinetics. Chemical EngineeringScience, 2002, 57(19): 4173―4186
doi: 10.1016/S0009-2509(02)00257-9
|
|
Yelvington P E, Green W H. Predictionof the knock limit and viable operating range for a homogeneous-chargecompression-ignition (HCCI) engine. SAE Paper 2003-01-1092, 2003
|
|
Bhave A, Kraft M, Mauss F, Oakley A J, Zhao H. Evaluating the EGR-AFR operatingrange of a HCCI engine. SAE Paper2005-01-0161, 2005
|
|
Chang J, Güralp O, Filipi Z, Assanis D, Kuo T-W, Najt P, Rask R. Newheat transfer correlation for an HCCI engine derived from measurementsof instantaneous surface heat flux. SAE Paper2004-01-2996, 2004
|
|
Komninos N P, Hountalas D T, Kouremenos D A. Description of in-cylindercombustion processes in HCCI engines using a multi-zone model. SAE Paper2005-01-0171, 2005
|
|
Komninos N P, Hountalas D T. Improvement and validation of a multi-zone model for HCCI enginecombustion concerning performance and emissions. Energy Conversion and Management, 2008, 49(10): 2530―2537
doi: 10.1016/j.enconman.2008.05.008
|
|
Jia M, Xie M Z, Peng Z. A comparative study of multi-zone combustionmodels for HCCI engines. SAE Paper2008-01-0064, 2008
|
|
Jia M, Xie M Z. A chemicalkinetics model of iso-octane oxidation for HCCI engine. Fuel, 2006, 85(17―18): 2593―2604
doi: 10.1016/j.fuel.2006.02.018
|
|
Aceves S M, Flowers D L, Westbrook C K, Smith J R, Pitz W, Dibble R, Christensen M, Johansson B. A multi-zone model for predictionof HCCI combustion and emissions. SAE Paper2000-01-0327, 2000
|
|
Sj?berg M, Dec J E, Babajimopoulos A, Assanis D. Comparing enhanced natural thermal stratification againstretarded combustion phasing for smoothing of HCCI heat-release rates. SAE Paper2004-01-2994, 2004
|
|
Dec J E, Sj?berg M. Aparametric study of HCCI combustion – the sources of emissionsat low loads and the effects of GDI fuel injection. SAE Paper 2003-01-0752, 2003
|
|
Eng J A. Characterization of pressure waves in HCCI combustion. SAE Paper2002-01-2859, 2002
|
|
Olsson J-O, Tunestal P, Johansson B, Fiveland S, Agama J R, Assanis D N. Compression ratio influence on maximumload of a natural gas-fueled HCCI engine. SAE Paper 2002-01-0111, 2002
|
|
Haraldsson G, Hyvonen J, Tunestal P, Johansson B. HCCI combustion phasing in a multi-cylinder engine usingvariable compression ratio. SAE Paper 2002-01-2858, 2002
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|