This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Transient Control of HCCI Through Combined Intake and Exhaust Valve Actuation
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 27, 2003 by SAE International in United States
Annotation ability available
Homogeneous Charge Compression Ignition, HCCI, has the attractive feature of low particulate emission and low Nitrogen Oxides, NOx, emission combined with high efficiency. The principle is a combination of an Otto and a Diesel engine in that a premixed charge is ignited by the compression heat.
One of the main challenges with the HCCI combustion system is to control the Start Of Combustion, SOC, for varying load and external conditions. A method to achieve this on a cycle-by-cycle basis is to vary the valve timing based on a feedback signal from the SOC of previous cycles. The control can be achieved with two basic valve-timing strategies, named the Overlap- and the IVC-method. The Overlap-method works by trapping of residuals while the IVC-method affects the effective compression ratio. These methods have in an earlier paper been verified to work one at a time to control SOC during engine transients . In this work the two strategies are incorporated into one controller, thereby allowing the operational window to be widened.
Engine tests are conducted on a single cylinder engine equipped with a hydraulic valve system. Results shows that SOC successfully can be controlled and that the operational window is widened by aid of the combined controller. Net Indicated Mean Effective Pressure, net IMEP, between 1.26 bar and 10.5 bar has been tested in the 500 rpm to 1750 rpm speed range. The principles behind the combined controller are discussed from an engine perspective. The control performance is reported and the area of operation for the two strategies is evaluated.
The work described forms the basis for further studies of HCCI control. The long-term goal of the research is to develop model based control strategies for HCCI engines using variable valve timing to achieve transient control on a cycle-by-cycle basis.
CitationAgrell, F., Ångström, H., Eriksson, B., Wikander, J. et al., "Transient Control of HCCI Through Combined Intake and Exhaust Valve Actuation," SAE Technical Paper 2003-01-3172, 2003, https://doi.org/10.4271/2003-01-3172.
Homogeneous Charge Compression Ignition Engines 2003
Number: SP-1805; Published: 2003-10-31
Number: SP-1805; Published: 2003-10-31
- Agrell F. Ångström H.E. Eriksson B. Wikander J. Linderyd J. “Integrated Simulation And Engine Test of Closed Loop HCCI Control by aid of Variable Valve Timings” SAE 2003-01-0748
- Sjöberg M. Edling L.O. Eliassen T. Magnusson L. Ångström H.E. “GDI HCCI: Effects of Injection Timing and Air Swirl on Fuel Stratification, Combustion and Emission Formation” SAE 2002-01-0106
- Hultqvist A. “Characterization of the Homogeneous Charge Compression Ignition Process” Lund Institute of Technology
- Martinez-Frias J. Aceves S.M. Flowers D. Smith J.R. Dibble R. “HCCI Engine Control by Thermal Management” SAE 2000-01-2869
- Olsson J.O. Tunestål P. Johansson B. “Closed-Loop Control of an HCCI Engine” SAE 2001-01-1031
- Olsson J.O. Tunestål P. Haraldsson G. Johansson B. “A Turbo Charged Dual Fuel HCCI Engine” SAE 2001-01-1896
- Kaahaaina N.B. Simon A.J. Caton P.A. Edwards C.F. “Use of Dynamic Valving to Achieve Residual-Affected Combustion” SAE 2001-01-0549
- Law D. Kemp D. Allen J. Kirkpatrick G. Copland T. “Controlled Combustion in an IC-Engine with a fully Variable Valve Train” SAE 2000-01-0251
- Koopmans L. Denbratt I. “A Four Stroke Camless Engine, Operated in Homogeneous Charge Compression Ignition Mode with Commercial Gasoline” SAE 2001-01-3610
- Piock W. F. Fraidl G. K. 25 04 02 26 04 02
- Fraidl G.K. Piock W. F. Fürhapter A. Unger E. M. Kammerdiener T. 10 2002
- Babajimopoulos A. Assanis D. N. Fiveland S. B. “An Appoach for modelling the Effects of Gas Exchange Processes on HCCI Combustion and Its Application in Evaluating Variable Valve Timing Control Strategies” SAE 2002-01-2829
- Muller R. Hart M. Krötz G. Eickhoff M. Truscott A. Noble A. Cavalloni C. Gnielka M. “Combustion Pressure Based Engine Management System” SAE 2000-01-0928
- Matekunas F. A. Battitston P. A. Chang C.F. Lancaster D.R. “Cylinder-Pressure-Based Engine Control Using Pressure-Ratio-Management and Low-Cost Non-Intrusive Cylinder Pressure Sensors” SAE 2000-01-0932
- Mladek M. Onder C.H. “A Model for the Estimation of Inducted Air Mass and the Residual Gas Fraction using Cylinder Pressure Measurements” SAE 2000-01-0958
- Rassweiler G.M. Withrow L. “Motion Pictures of Engine Flames Correlated with Pressure Cards” SAE Journal (Trans) 42 185 204 May 1938 SAE 800131
- Livengood J.C. Wu P.C. “Correlation of Autoignition Phenomenon in Internal Combustion Engines and Rapid Compression Machines” Fifth Symposium (International) on Combustion 347 356 1955
- Heywood J.B. “Internal Combustion Engine Fundamentals” McGraw-Hill, Inc. 0-07-100499-8
- Ohyama Y. “Engine Control Using Combustion Model” SAE 2000-01-0198
- Larsson M. “Homogeneous Charge Compression Ignition Conditions for Diesel Fuel” Machine Design KTH Internal Combustion Engines