HCCI_papers.bib

@article{Chiang2009,
  author = {Chiang, C. J. and Stefanopoulou, A. G.},
  title = {Sensitivity analysis of combustion timing of homogeneous charge compression
	ignition gasoline engines},
  journal = {Journal of Dynamic Systems, Measurement and Control},
  year = {2009},
  volume = {131},
  pages = {014506-014510},
  number = {1},
  file = {papers_hcci/ChiangASMESensHCCI.pdf},
  owner = {Admin},
  timestamp = {2009.10.23}
}
@inproceedings{Chiang2007b,
  author = {Chiang, C. J. and Stefanopoulou, A. G.},
  title = {Dynamics of Homogeneous Charge Compression Ignition (HCCI) Engines
	with High Dilution},
  booktitle = {Proceedings of the American Control Conference},
  year = {2007},
  pages = {2979--2984},
  month = {9--13 July },
  doi = {10.1109/ACC.2007.4282274},
  file = {papers_hcci/ChiangACC07ThermStabHCCI.pdf},
  owner = {siegeljb},
  timestamp = {2009.02.06}
}
@inproceedings{Chiang2006,
  author = {Chiang, C. J. and Stefanopoulou, A. G.},
  title = {Sensitivity analysis of combustion timing and duration of homogeneous
	charge compression ignition (HCCI) engines},
  booktitle = {Proc. American Control Conference},
  year = {2006},
  pages = {1857-1862},
  month = {14--16 June },
  doi = {10.1109/ACC.2006.1656490},
  file = {papers_hcci/ChiangACC06SensHCCI.pdf},
  owner = {siegeljb},
  timestamp = {2009.02.06}
}
@inproceedings{Chiang2005,
  author = {Chiang, C. J. and Stefanopoulou, A. G.},
  title = {Control of thermal ignition in gasoline engines},
  booktitle = {Proc. American Control Conference the 2005},
  year = {2005},
  volume = {6},
  pages = {3847--3852},
  month = {8--10 June },
  doi = {10.1109/ACC.2005.1470574},
  file = {papers_hcci/ChiangACC05EGRHCCI.pdf},
  owner = {siegeljb},
  timestamp = {2009.02.06}
}
@inproceedings{Chiang2004,
  author = {Chiang, C. J. and Stefanopoulou, A. G.},
  title = {Steady-state multiplicity and stability of thermal equilibria in
	homogeneous charge compression ignition (HCCI) engines},
  booktitle = {Proceedings of the 43rd IEEE Conference on Decision and Control},
  year = {2004},
  volume = {2},
  pages = {1676--1681},
  month = {14--17 Dec. },
  file = {papers_hcci/ChiangCDC04StabHCCI.pdf},
  owner = {siegeljb},
  timestamp = {2009.02.06}
}
@article{Chiang2007a,
  author = {Chia-Jui Chiang and Stefanopoulou, A. G.},
  title = {Stability Analysis in Homogeneous Charge Compression Ignition (HCCI)
	Engines With High Dilution},
  journal = {IEEE Transactions on Control Systems Technology},
  year = {2007},
  volume = {15},
  pages = {209--219},
  number = {2},
  month = {March },
  doi = {10.1109/TCST.2006.883333},
  file = {papers_hcci/ChiangIEEEEquilHCCI.pdf},
  owner = {siegeljb},
  timestamp = {2009.02.06}
}
@article{Chiang2007,
  author = {Chia-Jui Chiang and Stefanopoulou, A. G. and Jankovic, M.},
  title = {Nonlinear Observer-Based Control of Load Transitions in Homogeneous
	Charge Compression Ignition Engines},
  journal = {IEEE Transactions on Control Systems Technology},
  year = {2007},
  volume = {15},
  pages = {438--448},
  number = {3},
  month = {May },
  note = {special issue in Control Applications in Automotive Engineering},
  doi = {10.1109/TCST.2007.894637},
  file = {papers_hcci/ChiangIEEENLObsHCCI.pdf::},
  owner = {siegeljb},
  timestamp = {2009.02.06}
}
@inproceedings{gorzelic2012dscc,
  author = {P. Gorzelic and E. Hellstr{\"o}m and A. G. Stefanopoulou and L. Jiang},
  title = {Model-based feedback control for an automated transfer out of {SI}
	operation during {SI} to {HCCI} transitions in gasoline engines},
  booktitle = {Proc. ASME Dynamic Systems and Control Conference},
  year = {2012},
  address = {Fort Lauderdale, FL, USA},
  abstract = {This paper takes a first step towards model-based feedback control
	for the transition between spark ignition (SI) and homogeneous charge
	compression ignition (HCCI) combustion modes by approaching the transfer
	out of SI operation during the SI into HCCI transition in a closed-loop
	control framework. The combustion mode switch is taken to be directly
	from SI to HCCI without an intermediate combustion mode between the
	two, and the HCCI phase of the transition is not addressed. The transfer
	out of SI operation is formulated as a multi-input, multi-output
	control problem with input and output constraints. A baseline feedback
	controller for the transfer is designed using linear quadratic regulator
	methods, and is tested in simulation on a nonlinear mean value engine
	model. A simple open-loop transition based on look-up table set points
	is included as well for comparison. The feedback controller shows
	the ability to complete the SI phase of the transition in a short
	number of cycles, while maintaining a minimal disturbance to the
	engine torque in comparison to the open-loop controller.},
  file = {papers_hcci/Gorzelic2012dscc.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@inproceedings{gorzelic2012ccdc,
  author = {P. Gorzelic and E. Hellstr{\"o}m and A. G. Stefanopoulou and L. Jiang
	and S. Gopinath},
  title = {A Coordinated Approach for Throttle and Wastegate Control in Turbocharged
	Spark Ignition Engines},
  booktitle = {Proc. 24th Chinese Control and Decision Conference},
  year = {2012},
  pages = {1524-1529},
  address = {Taiyuan, China},
  abstract = {This paper presents a control approach for turbocharged spark ignition
	engines that coordinates the throttle and wastegate air path actuators
	in order to improve driveability without significant compromise in
	efficiency. The coordinated controller is based on a two-input single-output
	(TISO) architecture which can be tuned through classical frequency
	response techniques using linearizations of a nonlinear mean value
	engine model. A systematic tuning method for the TISO architecture
	based on prior work is recommended and explained. The controller
	is evaluated in simulation with a one-dimensional GT-Power model
	and its performance is compared to that of a controller that does
	not coordinate the throttle and wastegate.},
  category = {conference},
  doi = {10.1109/CCDC.2012.6244247},
  file = {papers_hcci/Gorzelic2012ccdc.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@article{hellstrom2012gtp,
  author = {E. Hellstr{\"o}m and J. Larimore and A. G. Stefanopoulou and J. Sterniak
	and L. Jiang},
  title = {Quantifying cyclic variability in a multi-cylinder {HCCI} engine
	with high residuals},
  journal = {Journal of Engineering for Gas Turbines and Power},
  year = {2012},
  volume = {134},
  pages = {112803},
  number = {11},
  abstract = {Cyclic variability (CV) in lean HCCI combustion at the limits of operation
	is a known phenomenon, and this work aims at investigating the dominant
	effects for the cycle evolution at these conditions in a multi-cylinder
	engine. Experiments are performed in a four-cylinder engine at the
	operating limits at late phasing of lean HCCI operation with negative
	valve overlap (nvo). A combustion analysis method that estimates
	the unburned fuel mass on a per-cycle basis is applied on both main
	combustion and the nvo period revealing and quantifying the dominant
	effects for the cycle evolution at high CV. The interpretation of
	the results and comparisons with data from a single-cylinder engine
	indicate that, at high CV, the evolution of combustion phasing is
	dominated by low-order deterministic couplings similar to the single-cylinder
	behavior. Variations, such as air flow and wall temperature, between
	cylinders strongly influence the level of CV but the evolution of
	the combustion phasing is governed by the interactions between engine
	cycles of the individual cylinders.},
  category = {journal},
  doi = {10.1115/1.4007164},
  file = {papers_hcci/HellstromASME_GTP.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@inproceedings{hellstrom2012ices,
  author = {E. Hellstr{\"o}m and J. Larimore and A. G. Stefanopoulou and J. Sterniak
	and L. Jiang},
  title = {Quantifying cyclic variability in a multi-cylinder {HCCI} engine
	with high residuals},
  booktitle = {ASME Internal Combustion Engine Division Spring Tecnical Conference},
  year = {2012},
  address = {Torino, Italy},
  note = {ICEF2012-81107},
  abstract = {Cyclic variability (CV) in lean HCCI combustion at the limits of operation
	is a known phenomenon, and this work aims at investigating the dominant
	effects for the cycle evolution at these conditions in a multi-cylinder
	engine. Experiments are performed in a four-cylinder engine at the
	operating limits at late phasing of lean HCCI operation with negative
	valve overlap (nvo). A combustion analysis method that estimates
	the unburned fuel mass on a per-cycle basis is applied on both main
	combustion and the nvo period revealing and quantifying the dominant
	effects for the cycle evolution at high CV. The interpretation of
	the results and comparisons with data from a single-cylinder engine
	indicate that, at high CV, the evolution of combustion phasing is
	dominated by low-order deterministic couplings similar to the single-cylinder
	behavior. Variations, such as in air flow and wall temperature, between
	cylinders strongly influence the level of CV but the evolution of
	the combustion phasing is governed by the interactions between engine
	cycles of the individual cylinders.},
  category = {conference},
  file = {papers_hcci/Hellstrom2012ices.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@inproceedings{hellstrom2011,
  author = {E. Hellstr{\"o}m and A. G. Stefanopoulou},
  title = {Modeling cyclic dispersion in autoignition combustion},
  booktitle = {Proc. 50th IEEE Conference on Decision and Control},
  year = {2011},
  pages = {6834--6839},
  address = {Orlando, FL, USA},
  abstract = {A two-state discrete-time model is developed for the cycle-to-cycle
	dynamics in lean-fueled controlled autoignition engines. The main
	goal is to capture the cyclic variability in the combustion phasing
	which is a key performance variable in combustion control. The model
	is physics based, the states are the temperature and the fuel mass
	at intake valve closing, and simple enough so it may provide insights
	into the dynamics and causes of the behavior. The parameters are
	crudely calibrated using data that include late phasing approaching
	to misfire and the model captures the important effect of heat release
	during the re-compression of the residual gas. The model is shown
	to predict the coupling between cycles in the sense that, when driven
	by a stochastic input, the model reproduces the evolution and the
	magnitude of the cyclic variability with similar statistical properties
	to measured data.},
  category = {conference},
  doi = {10.1109/CDC.2011.6161383},
  file = {papers_hcci/HellstromTCSTa.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@article{hellstrom2013tcsta,
  author = {E. Hellstr{\"o}m and A. G. Stefanopoulou and L. Jiang},
  title = {Cyclic Variability and Dynamical Instabilities in Autoignition Engines
	with High Residuals},
  journal = {IEEE Transactions on Control Systems Technology},
  year = {2013},
  note = {To Appear},
  doi = {10.1109/TCST.2012.2221715},
  file = {papers_hcci/HellstromTCSTa.pdf},
  owner = {Admin},
  timestamp = {2013.04.02}
}
@inproceedings{hellstrom2012cdc,
  author = {E. Hellstr{\"o}m and A. G. Stefanopoulou and L. Jiang},
  title = {Reducing Cyclic Dispersion in Autoignition Combustion by Controlling
	Fuel Injection Timing},
  booktitle = {Proc. 51st IEEE Conference on Decision and Control},
  year = {2012},
  address = {Maui, HI, USA},
  file = {papers_hcci/HellstromCDC.pdf},
  owner = {Admin},
  timestamp = {2013.04.02}
}
@inproceedings{hellstrom2012sae,
  author = {E. Hellstr{\"o}m and A. G. Stefanopoulou and J. V{\'a}vra and A.
	Babajimopoulos and D. Assanis and L. Jiang and H. Yilmaz},
  title = {Understanding the dynamic evolution of cyclic variability at the
	operating limits of {HCCI} engines with negative valve overlap},
  booktitle = {SAE World Congress},
  year = {2012},
  number = {2012-01-1106},
  series = {SAE Technical Paper Series},
  address = {Detroit, MI, USA},
  abstract = {An experimental study is performed for homogeneous charge compression
	ignition (HCCI) combustion focusing on late phasing conditions with
	high cyclic variability (CV) approaching misfire. High CV limits
	the feasible operating range and the objective is to understand and
	quantify the dominating effects of the CV in order to enable controls
	for widening the operating range of HCCI. A combustion analysis method
	is developed for explaining the dynamic coupling in sequences of
	combustion cycles where important variables are residual gas temperature,
	combustion efficiency, heat release during re-compression, and unburned
	fuel mass. The results show that the unburned fuel mass carries over
	to the re-compression and to the next cycle creating a coupling between
	cycles, in addition to the well known temperature coupling, that
	is essential for understanding and predicting the HCCI behavior at
	lean conditions with high CV.},
  category = {conference},
  doi = {10.4271/2012-01-1106},
  file = {papers_hcci/hellstrom2012sae.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@article{hellstrom2012saej,
  author = {E. Hellstr{\"o}m and A. G. Stefanopoulou and J. V{\'a}vra and A.
	Babajimopoulos and D. Assanis and L. Jiang and H. Yilmaz},
  title = {Understanding the dynamic evolution of cyclic variability at the
	operating limits of {HCCI} engines with negative valve overlap},
  journal = {SAE International Journal of Engines},
  year = {2012},
  volume = {5},
  pages = {995--1008},
  number = {3},
  note = {Also in SAE World Congress number 2012-01-1106 in SAE Technical Paper
	Series},
  abstract = {An experimental study is performed for homogeneous charge compression
	ignition (HCCI) combustion focusing on late phasing conditions with
	high cyclic variability (CV) approaching misfire. High CV limits
	the feasible operating range and the objective is to understand and
	quantify the dominating effects of the CV in order to enable controls
	for widening the operating range of HCCI. A combustion analysis method
	is developed for explaining the dynamic coupling in sequences of
	combustion cycles where important variables are residual gas temperature,
	combustion efficiency, heat release during re-compression, and unburned
	fuel mass. The results show that the unburned fuel mass carries over
	to the re-compression and to the next cycle creating a coupling between
	cycles, in addition to the well known temperature coupling, that
	is essential for understanding and predicting the HCCI behavior at
	lean conditions with high CV.},
  category = {journal},
  doi = {10.4271/2012-01-1106},
  file = {papers_hcci/hellstrom2012saej.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@inproceedings{jade2012,
  author = {S. Jade and E. Hellstr{\"o}m and L. Jiang and A. G. Stefanopoulou},
  title = {Fuel governor augmented control of recompression {HCCI} combustion
	during large load transients},
  booktitle = {Proc. American Control Conference},
  year = {2012},
  pages = {2072--2077},
  address = {Montr{\'e}al, Canada},
  abstract = {A control strategy designed to track desired combustion phasing for
	a homogeneous charge compression ignition (HCCI) engine during large
	load transitions is presented in this work. Three inputs are controlled,
	namely valve timings, fuel injection amount and fuel injection timing.
	The valve and fuel injection timings are manipulated to track combustion
	phasing using a mid-ranging control strategy. A fuel governor is
	then added on to the compensated system to modify the fuel injection
	amount by enforcing pointwise-in-time actuator constraints.
	
	The fuel governor is shown to improve the transient response of combustion
	phasing and load during large load transitions, when the possibility
	of future constraint violations exists. The use of the fuel governor
	during large load reductions can prevent engine misfire. Moreover,
	the fuel governor strategy simplifies the overall controller design
	by decoupling the phasing controller from the constraint enforcing
	mechanism. System complexity is reduced by approximating the nonlinear
	fuel governor as a set of linear algebraic expressions. This is solved
	with very little computational overhead and without incurring a significant
	loss in performance, as presented in simulations.},
  category = {conference},
  file = {papers_hcci/Jade2012.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@inproceedings{jade2011,
  author = {S. Jade and E. Hellstr{\"o}m and A. G. Stefanopoulou and L. Jiang},
  title = {On the influence of composition on the thermally-dominant recompression
	{HCCI} combustion dynamics},
  booktitle = {Proc. ASME Dynamic Systems and Control Conference},
  year = {2011},
  pages = {677--684},
  address = {Arlington, VA, USA},
  abstract = {A zero dimensional, mean-value, control-oriented model for recompression
	homogeneous charge compression ignition (HCCI) combustion with two
	discrete states representing temperature and composition dynamics
	is presented. This model captures steady state magnitudes and trends
	in combustion phasing, residual gas fraction, and mass flows caused
	by sweeps in valve timings, fuel- ing rate, and fuel injection timing.
	It is shown that the coupling of the composition state with the mainly
	thermally-driven com- bustion dynamics causes competing slow and
	fast dynamics that shape the transient response of the phasing. A
	decoupled version of the model, where composition does not affect
	combustion phas- ing, is also developed in an effort to further simplify
	the model. This version matches the steady state fidelity of the
	coupled model, but has a qualitatively different dynamical behavior.
	Both mod- els exhibit complex behaviors such as limit cycles at extremely
	late phasing. Both realizations are valid contenders as low or- der
	steady state representations of HCCI behavior. High-fidelity transient
	data will be necessary to further clarify the necessity of including
	composition effects on combustion phasing.},
  category = {conference},
  doi = {10.1115/DSCC2011-6050},
  file = {papers_hcci/jade2011.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@inproceedings{larimore2012,
  author = {J. Larimore and E. Hellstr{\"o}m and J. Sterniak and L. Jiang and
	A. G. Stefanopoulou},
  title = {Experiments and analysis of high cyclic variability at the operational
	limits of spark-assisted {HCCI} combustion},
  booktitle = {Proc. American Control Conference},
  year = {2012},
  pages = {2072--2077},
  address = {Montr{\'e}al, Canada},
  abstract = {During combustion mode switches, between homogeneous charge compression
	ignition (HCCI) and spark ignition (SI) combustion, the engine will
	operate at throttled and stoichiometric conditions where high cyclic
	variability (CV) is typically observed. To analyze and eventually
	model the engine behavior at the high CV condition we perform measurements
	on a four-cylinder HCCI engine with negative valve overlap and describe
	a cycle-resolved analysis method that enables the characterization
	of cycle-to-cycle variations at such conditions.
	
	The dynamic behavior observed is characterized by the recycling of
	thermal and chemical energy between cycles. We quantify the cyclic
	exchange and relate it to the dynamic patterns that emerge from this
	high CV condition. We also clarify the contributions of the spark
	at these conditions, where advancing the spark can significantly
	reduce the variability. It is our conclusion that the dynamic patterns
	observed can be characterized by the cycle-resolved combustion efficiency
	as it is an essential non-linearity in the dynamic evolution.},
  category = {conference},
  file = {papers_hcci/Larimore2012.pdf},
  owner = {Admin},
  timestamp = {2012.07.12}
}
@inproceedings{Lee2010,
  author = {Donghoon Lee and Li Jiang and Yilmaz, H. and Stefanopoulou, A.G.},
  title = {Air charge control for turbocharged spark ignition engines with internal
	exhaust gas recirculation},
  booktitle = {American Control Conference (ACC), 2010},
  year = {2010},
  pages = {1471 -1476},
  month = {30 2010-july 2},
  issn = {0743-1619},
  keywords = {air charge control;cylinder charge control;direct injection engine;dynamometer
	measurements;electronic throttle actuator;exhaust variable camshafts;feedback
	throttle compensator;internal exhaust gas recirculation;mean-value
	model;nonlinear feedforward;turbocharged spark ignition engines;actuators;camshafts;dynamometers;engines;exhaust
	systems;feedforward;ignition;}
}
@inproceedings{Lee2010a,
  author = {Donghoon Lee and Stefanopoulou, A.G. and Makkapati, S. and Jankovic,
	M.},
  title = {Modeling and control of a heated air intake homogeneous charge compression
	ignition (HCCI) engine},
  booktitle = {American Control Conference (ACC), 2010},
  year = {2010},
  pages = {3817 -3823},
  month = {30 2010-july 2},
  issn = {0743-1619},
  keywords = {closed loop performance;combustion stability;combustion timing regulation;crank
	angle resolved model;fuel efficiency;heated air intake;homogeneous
	charge compression ignition engine;indicated mean effective pressure;indicated
	specific fuel consumption;linear controller;mean value model;nonlinear
	plant;statistical physics;throttle actuators;two input and single
	output system;actuators;closed loop systems;intake systems (machines);internal
	combustion engines;nonlinear control systems;statistical analysis;}
}
@article{Rausen2005,
  author = {Rausen, D.J. and Stefanopoulou, A.G. and Kang, J.-M.And Eng, J.A.
	and Kuo, T.-W},
  title = {A mean-value model for control of homogeneous charge compression
	ignition (HCCI) engines},
  journal = {Transactions of the ASME. Journal of Dynamic Systems, Measurement
	and Control},
  year = {2005},
  volume = {3},
  pages = {355-362},
  number = {3},
  month = {September},
  file = {papers_hcci/RausenModelHCCI.pdf},
  owner = {Admin},
  timestamp = {2009.10.23}
}
@inproceedings{Rausen2004,
  author = {Rausen, D. J. and Stefanopoulou, A. G. and Kang, J. -M. and Eng,
	J. A. and Kuo, T. -W.},
  title = {A mean-value model for control of homogeneous charge compression
	ignition (HCCI) engines},
  booktitle = {Proceedings of the American Control Conference},
  year = {2004},
  volume = {1},
  pages = {125--131},
  month = {30 June--2 July },
  file = {papers_hcci/RausenACC04HCCI.pdf},
  owner = {siegeljb},
  timestamp = {2009.02.06}
}
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