Ford Global Technolgoies, LLC

Martin Brown

Ross Dykstra Pursifull

Michael Mcquillen

James Alfred Hilditch

Imtiaz Ali

Naginder Gogna

Gopichandra Surnilla

Gopichandra Sumilla

Methods and systems are provided for accurately estimating intake aircharge based on the output of an intake oxygen sensor while flowing EGR, purge, or PCV hydrocarbons to the engine. The unadjusted aircharge estimate is used for engine fuel control while the hydrocarbon adjusted aircharge estimate is used for engine torque control. A controller is configured to sample the oxygen sensor at even increments in a time domain, stamp the sampled data in a crank angle domain, store the sampled data in a buffer, and then select one or more data samples corresponding to a last firing period from the buffer for estimating the intake aircharge.

Methods and systems for engine fuel and torque control

Growing community of inventors

Dearborn, MI, United States of America

Martin Brown