Predictive In-Cycle Closed-Loop Combustion Control with Pilot-Main Injections

Carlos Jorques Moreno, Ola Stenlåås, Per Tunestål

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2 Citeringar (SciVal)

Sammanfattning

This paper studies the use of predictive in-cycle close-loop combustion control to reduce the stochastic cyclic variations of diesel combustion. The combustion metrics that fully define the pressure trace with a pilot-main injection i.e. pilot and main start of combustion, burned pilot mass, and engine load are used as the set-point reference. These metrics are in-cycle predicted by calibrated models as functions of the current cylinder state, estimated by in-cylinder pressure measurements. The proposed approach uses four individual controllers for the set-point error minimization, which respectively regulate the injection’s timing and duration of the pilot-main injection. The controllers are implemented in a FPGA and tested in a Scania D13 engine. The steady-state error reduction, disturbance rejection and transient response are discussed. The results confirm the error reduction in both, cycle-to-cycle and cylinder-to-cylinder variations. The error dispersion, measured by the 95% confidence interval, was reduced between 25% and 75% for all the controlled parameters. By on-line adaptation, the controllers are robust against model uncertainties and fuel types.
Originalspråkengelska
Sidor (från-till)14000-14007
Antal sidor8
TidskriftIFAC-PapersOnLine
Volym53
Utgåva2
DOI
StatusPublished - 2021 apr 14
Evenemang21th IFAC World Congress - Berlin, Tyskland
Varaktighet: 2020 jul 122020 jul 17

Ämnesklassifikation (UKÄ)

  • Energiteknik

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