Feed-forward control of purge flow in internal combustion engines

Fatemeh Zamanian, Matthew A. Franchek, Karolos M. Grigoriadis, Imad Makki

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Presented is a feed-forward controller that coordinates engine fueling with a purge event to reduce air-fuel ratio excursions. The controller employs a linear parameter-varying model to estimate the necessary changes in fuel pulse-width based on a hydrocarbon sensor located in the purge line. Synchronization between the purge fuel vapor arrival at the intake manifold and the fueling command is realized using a transport delay model. The proposed controller is experimentally validated on a Ford 5.4-L port injected engine and a 3.6-L EcoBoost engine. Significant reductions in air-fuel ratio excursions are achieved during the steady-state engine operating conditions associated with highway conditions.

Original languageEnglish (US)
Pages (from-to)221-234
Number of pages14
JournalInternational Journal of Engine Research
Issue number2
StatePublished - Feb 1 2016


  • Canister purge control
  • air-to-fuel ratio control
  • emission control
  • internal combustion engine

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Ocean Engineering
  • Mechanical Engineering


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