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Study of Combustion Behavior and Combustion Stability of HCCI-DI Combustion for a Wide Operating Range using a Low Cost Novel Experimental Technique
Technical Paper
2014-01-2661
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An innovative method is developed for achieving HCCI-DI combustion without any major engine geometry modification. Many control strategies have been reported in literature, in spite of that even today no HCCI combustion engine is available on commercial basis. Pilot and main fuel injection strategy is used as a control strategy in this work. Our developed technique is a low cost alternative to conventional CRDI pumps which can be implemented readily at least for rural application engines (where cost of the system is more important than any other aspects) to reduce emissions. Using this new technique a stable HCCI-DI combustion was achieved for a wide operating range. To realize the effectiveness of this developed experimentation technique, a detailed combustion study at various operating conditions were investigated using commercial diesel as fuel. Pilot injection timing was fixed at 270 degrees bTDC allowing sufficient time for homogeneous mixture preparation and main injection was fixed at 26 degrees bTDC to trigger the combustion. Split ratio was varied from zero to 95% at various operating load (2 bar Net IMEP to 6.5 bar Net IMEP) conditions. This study is limited up to 95% split ratio since the engine went beyond drivability limit (COV of IMEP <10% as defined in Stone, 2012 [10]) with 100% split ratio in most of the operating conditions. The behavior of all combustion parameters (cylinder pressure, pressure rise rate, heat release rate and start of combustion) at various operating conditions are analyzed and presented in this paper. It was evident from the results that with increasing split ratio, all combustion parameters start advancing. Similarly, at any constant split ratio all combustion parameters started advancing with increasing load. Cycle by cycle statistical analysis of peak cycle pressure and net IMEP for 100 consecutive cycles is also analyzed to understand the combustion stability achieved using this technique. In HCCI combustion, low load limit is widely defined by high value of COV of IMEP and High load limit is defined by knocking combustion. This study shows, even at a 95% split ratio and at very low intake air temperature, cycle by cycle variation was found within drivability limit and therefore, No misfire region exists even at idling (2 bar IMEP) condition. Therefore, extreme Low load range can be achieved using a combination of pilot and main injection strategy. Combustion stability at various split ratio and load were also compared with conventional diesel combustion. Ringing Index (RI) is calculated to find the high load limit of HCCI-DI combustion of the modified engine. It is found that RI monotonically increased with increasing split ratio and increasing load. At higher split ratio, RI is extremely sensitive to engine load. At 80% split ratio and at 6.5 bar IMEP condition, RI was found to be 8 times higher than the corresponding baseline combustion. At higher split ratio, high load range narrows down. To increase load range, split ratio should be reduced if no other control strategy is used.
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Das, P., Subbarao, P., and Subrahmanyam, J., "Study of Combustion Behavior and Combustion Stability of HCCI-DI Combustion for a Wide Operating Range using a Low Cost Novel Experimental Technique," SAE Technical Paper 2014-01-2661, 2014, https://doi.org/10.4271/2014-01-2661.Also In
References
- Onishi , S. , Jo , S. , Shoda , K. , Jo , P. et al. Active Thermo-Atmosphere Combustion (ATAC) - A New Combustion Process for Internal Combustion Engines SAE Technical Paper 790501 1979 10.4271/790501
- Noguchi , M. , Tanaka , Y. , Tanaka , T. , and Takeuchi , Y. A Study on Gasoline Engine Combustion by Observation of Intermediate Reactive Products during Combustion SAE Technical Paper 790840 1979 10.4271/790840
- Thring , R. Homogeneous-Charge Compression-Ignition (HCCI) Engines SAE Technical Paper 892068 1989 10.4271/892068
- Christensen , M. , Hultqvist , A. , and Johansson , B. Demonstrating the Multi Fuel Capability of a Homogeneous Charge Compression Ignition Engine with Variable Compression Ratio SAE Technical Paper 1999-01-3679 1999 10.4271/1999-01-3679
- Christensen , M. , Johansson , B. , Amnéus , P. , and Mauss , F. Supercharged Homogeneous Charge Compression Ignition SAE Technical Paper 980787 1998 10.4271/980787
- Ra , Y. , Hruby , E. , and Reitz , R. Parametric Study of Combustion Characteristics in a Direct Injection Diesel Homogeneous Charge Compression Ignition Engine with a Low Pressure Fuel Injector International Journal of Engine Research 6 215 1 17 2005
- A Report to the US Congress Homogeneous Charge Compression Ignition (HCCI) Technology US Department of Energy 2001
- Reitz , R. Directions in Internal Combustion Engine Research Combustion and Flame 160 2013 1 8 2013
- Wu , H. , Collings , N. , Regitz , S. , Etheridge , J. et al. Experimental Investigation of a Control Method for SI-HCCI-SI Transition in a Multi-Cylinder Gasoline Engine SAE Int. J. Engines 3 1 928 937 2010 10.4271/2010-01-1245
- Stone , R. Introduction to Internal Combustion Engines UK Palgrave Macmillan 2012
- Ishibashi , Y. and Asai , M. Improving the Exhaust Emissions of Two-Stroke Engines by Applying the Activated Radical Combustion SAE Technical Paper 960742 1996 10.4271/960742
- Marriott , C. and Reitz , R. Experimental Investigation of Direct Injection-Gasoline for Premixed Compression Ignited Combustion Phasing Control SAE Technical Paper 2002-01-0418 2002 10.4271/2002-01-0418
- Kook , S. and Bae , C. Combustion Control Using Two-Stage Diesel Fuel Injection in a Single-Cylinder PCCI Engine SAE Technical Paper 2004-01-0938 2004 10.4271/2004-01-0938
- Fang , C. , Yang , F. , Ouyang , M. , and Gao , G. Combustion Mode Switching Control in a HCCI Diesel Engine Applied Energy 110 2013 190 200 2013
- Asad , U. , Divekar , P. , Chen , X. , Zheng , M. et al. Mode Switching Control for Diesel Low Temperature Combustion with Fast Feedback Algorithms SAE Int. J. Engines 5 3 850 863 2012 10.4271/2012-01-0900
- Huang , H. , Su , W. , and Pei , Y. Experimental and Numerical Study of Diesel HCCI Combustion by Multi-Pulse Injection SAE Technical Paper 2008-01-0059 2008 10.4271/2008-01-0059
- Lu , Y. , Yu , W. , and Su , W. Using Multiple Injection Strategies in Diesel PCCI Combustion: Potential to Extend Engine Load, Improve Trade-off of Emissions and Efficiency SAE Technical Paper 2011-01-1396 2011 10.4271/2011-01-1396
- Bression , G. , Soleri , D. , Savy , S. , Dehoux , S. et al. A Study of Methods to Lower HC and CO Emissions in Diesel HCCI SAE Int. J. Fuels Lubr. 1 1 37 49 2009 10.4271/2008-01-0034
- Szybist , J. , Edwards , K. , Foster , M. , Confer , K. et al. Characterization of Engine Control Authority on HCCI Combustion as the High Load Limit is Approached SAE Int. J. Engines 6 1 553 568 2013 10.4271/2013-01-1665
- Urushihara , T. , Hiraya , K. , Kakuhou , A. , and Itoh , T. Expansion of HCCI Operating Region by the Combination of Direct Fuel Injection, Negative Valve Overlap and Internal Fuel Reformation SAE Technical Paper 2003-01-0749 2003 10.4271/2003-01-0749
- Aroonsrisopon , T. , Werner , P. , Waldman , J. , Sohm , V. et al. Expanding the HCCI Operation With the Charge Stratification SAE Technical Paper 2004-01-1756 2004 10.4271/2004-01-1756
- Urushihara , T. , Yamaguchi , K. , Yoshizawa , K. , and Itoh , T. A Study of a Gasoline-fueled Compression Ignition Engine ∼ Expansion of HCCI Operation Range Using SI Combustion as a Trigger of Compression Ignition ∼ SAE Technical Paper 2005-01-0180 2005 10.4271/2005-01-0180
- Yun , H. , Wermuth , N. , and Najt , P. Extending the High Load Operating Limit of a Naturally-Aspirated Gasoline HCCI Combustion Engine SAE Int. J. Engines 3 1 681 699 2010 10.4271/2010-01-0847
- Weall , A. , Szybist , J. , Edwards , K. , Foster , M. et al. HCCI Load Expansion Opportunities Using a Fully Variable HVA Research Engine to Guide Development of a Production Intent Cam-Based VVA Engine: The Low Load Limit SAE Int. J. Engines 5 3 1149 1162 2012 10.4271/2012-01-1134
- Johansson , T. , Borgqvist , P. , Johansson , B. , Tunestal , P. et al. HCCI Heat Release Data for Combustion Simulation, Based on Results from a Turbocharged Multi Cylinder Engine SAE Technical Paper 2010-01-1490 2010 10.4271/2010-01-1490
- Cairns , A. and Blaxill , H. The Effects of Two-Stage Cam Profile Switching and External EGR on SI-CAI Combustion Transitions SAE Technical Paper 2007-01-0187 2007 10.4271/2007-01-0187
- Matsuda , T. , Wada , H. , Kono , T. , Nakamura , T. et al. A Study of a Gasoline-fueled HCCI Engine∼Mode Changes from SI Combustion to HCCI Combustion∼ SAE Technical Paper 2008-01-0050 2008 10.4271/2008-01-0050
- Heywood , J. B. Internal Combustion Engine Fundamentals Singapore McGraw-Hill Book Company 1998
- Eng , J. Characterization of Pressure Waves in HCCI Combustion SAE Technical Paper 2002-01-2859 2002 10.4271/2002-01-2859
- Fuerhapter , A. , Piock , W. , and Fraidl , G. CSI - Controlled Auto Ignition - the Best Solution for the Fuel Consumption - Versus Emission Trade-Off? SAE Technical Paper 2003-01-0754 2003 10.4271/2003-01-0754
- Horn , U. , Egnell , R. , Johansson , B. , and Andersson , Ö. Detailed Heat Release Analyses with Regard to Combustion of RME and Oxygenated Fuels in an HSDI Diesel Engine SAE Technical Paper 2007-01-0627 2007 10.4271/2007-01-0627