Abstract
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 language | English (US) |
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Pages (from-to) | 221-234 |
Number of pages | 14 |
Journal | International Journal of Engine Research |
Volume | 17 |
Issue number | 2 |
DOIs | |
State | Published - Feb 1 2016 |
Keywords
- 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