TY - GEN
T1 - Control of a turbo charged NVO HCCI engine using a model based approach
AU - Aulin, Hans
AU - Johansson, Thomas
AU - Tunestål, Per
AU - Johansson, Bengt
PY - 2009/12/1
Y1 - 2009/12/1
N2 - By using a turbo the operating range of the HCCI engine can be increased, but at the expense of increased controller complexity. The dynamics the turbo introduces in the intake and the exhaust manifolds, have a large impact on the in-cylinder mixture temperature, pressure and finally the combustion phasing. To compensate for this and to maintain desired combustion phasing, precise control of the negative valve overlap is required. A physical model is therefore developed and linearized to yield a state space model, used for Kalman filter and main feedback controller design. The original nonlinear model is inverted to provide feedforward. The main actuators for the controller are the intake and exhaust cam phasing, fuel amount and timing of the injections. The main sensor signals used by the controller are the cylinder pressure, intake exhaust pressure, and intake temperature. The model is validated against experimental data, simulated with the controller and finally the controller was tested on the real engine. The article shows the big picture of how a control system for a spray guided, turbo charged, negative valve overlap HCCI engine can be developed.
AB - By using a turbo the operating range of the HCCI engine can be increased, but at the expense of increased controller complexity. The dynamics the turbo introduces in the intake and the exhaust manifolds, have a large impact on the in-cylinder mixture temperature, pressure and finally the combustion phasing. To compensate for this and to maintain desired combustion phasing, precise control of the negative valve overlap is required. A physical model is therefore developed and linearized to yield a state space model, used for Kalman filter and main feedback controller design. The original nonlinear model is inverted to provide feedforward. The main actuators for the controller are the intake and exhaust cam phasing, fuel amount and timing of the injections. The main sensor signals used by the controller are the cylinder pressure, intake exhaust pressure, and intake temperature. The model is validated against experimental data, simulated with the controller and finally the controller was tested on the real engine. The article shows the big picture of how a control system for a spray guided, turbo charged, negative valve overlap HCCI engine can be developed.
KW - Kalman filtering
KW - Modeling
KW - NVO
KW - Simulation
KW - Turbo HCCI
UR - http://www.scopus.com/inward/record.url?scp=80051526130&partnerID=8YFLogxK
U2 - 10.3182/20091130-3-FR-4008.0026
DO - 10.3182/20091130-3-FR-4008.0026
M3 - Conference contribution
AN - SCOPUS:80051526130
SN - 9783902661586
T3 - IFAC Proceedings Volumes (IFAC-PapersOnline)
SP - 79
EP - 86
BT - 2009 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling, E-COSM'09 - Final Report
T2 - 2009 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling, E-COSM'09
Y2 - 30 November 2009 through 2 December 2009
ER -