This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Control of HCCI During Engine Transients by Aid of Variable Valve Timings Through the Use of Model Based Non-Linear Compensation
Technical Paper
2005-01-0131
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
One of the main challenges with the Homogeneous Charge Compression Ignition, 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.
In an earlier paper it has been shown that if the two methods are incorporated into one controller, SOC can be controlled in a relatively large operating window although the transient performance was not sufficient. The reason is that the simple PI-controller cannot be made fast enough to cope with the transients without magnifying the cycle-to-cycle variations of the combustion into instability. In this work a model based control system that features a non-linear compensation, based on the inverse of the non-linear function from valve timings to ignition delay, is suggested and evaluated. The results show good transient performance. Control performance from engine tests is reported.
A combined engine and control simulation system is used for the development of the control strategies. The simulations are accomplished with a commercial cycle simulation code linked with a commercial control simulation code. The simulations are iteratively verified against engine test data. Engine tests are conducted on a single cylinder engine equipped with a hydraulic valve system.
Recommended Content
Authors
Topic
Citation
Agrell, F., Ångström, H., Eriksson, B., Wikander, J. et al., "Control of HCCI During Engine Transients by Aid of Variable Valve Timings Through the Use of Model Based Non-Linear Compensation," SAE Technical Paper 2005-01-0131, 2005, https://doi.org/10.4271/2005-01-0131.Also In
Homogeneous Charge Compression Ignition (HCCI) Combustion 2005
Number: SP-1963; Published: 2005-04-11
Number: SP-1963; Published: 2005-04-11
Homogeneous Charge Compression Ignition (HCCI) Combustion on CD-ROM from the SAE 2005 World Congress
Number: SP-1982CD; Published: 2005-04-11
Number: SP-1982CD; Published: 2005-04-11
References
- 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
- Agrell F. Ångström H.E. Eriksson B. Wikander J. Linderyd J. “Transient Control of HCCI Through Combined Intake and Exhaust Valve Actuation” SAE 2003-01-3172
- 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. “Ottodirektinspritzung ohne DeNox-Kat” Wiener Motorensymposium 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” 2000 Machine Design KTH Internal Combustion Engines
- Fuerhapter A. Unger E. Piock W.F. Fraidl G.K. “The New AVL CSI Engine- HCCI Operation on a Multi Cylinder Gasoline Engine” SAE 2004-01-0551