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Self-optimising control of an SI-engine using a torque sensor

Stefan Larsson (Institutionen för signaler och system, Reglerteknik) ; Ingemar Andersson (Institutionen för signaler och system, Signalbehandling)
Control Engineering Practice Vol. 16 (2008), 5, p. 505-514.
[Artikel, refereegranskad vetenskaplig]

Control of combustion phasing using a torque sensor is developed for a spark-ignited engine to demonstrate a method to increase its efficiency. Combustion phasing is quantified based on the torque signal using the torque ratio concept for combustion modelling. The combustion phasing is adjusted using the spark advance as control signal. An extremum-seeking controller finds the optimal combustion phasing in each cylinder. The combustion phasing is extracted using an algorithm, which considers the torsional resonances in the crankshaft. The torque-based control system is successfully evaluated on-line using internal EGR changes as combustion disturbances.

Nyckelord: Automotive control; Combustion-phasing detection; Engine control; Engine efficiency; Self-optimising control; Spark advance control



Denna post skapades 2008-12-10.
CPL Pubid: 80943

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Reglerteknik (2005-2017)
Institutionen för signaler och system, Signalbehandling (1900-2017)

Ämnesområden

Systemteknik
Reglerteknik
Signalbehandling

Chalmers infrastruktur