US Patent:
20140046576, Feb 13, 2014
Inventors:
Gopal Krishna Chamarthi - Saline MI, US
John G. Fraser - Tecumseh, CA
Arnold Kromberg - Howell MI, US
Anil Shah - Canton MI, US
Thomas C. Erickson - Ypsilanti MI, US
Brien Lloyd Fulton - West Bloomfield MI, US
Scott Eeley - South Lyon MI, US
Assignee:
FORD GLOBAL TECHNOLOGIES, LLC - Dearborn MI
International Classification:
F02D 41/26
G06F 19/00
F01N 3/035
F02D 41/30
Abstract:
Methods and systems are provided for detecting hydrocarbon ingestion into an engine based on the simultaneous monitoring of cylinder imbalance and an elevated exhaust exotherm. Crankshaft acceleration data is monitored during steady-state and transient engine conditions while exhaust temperatures are estimated during non-regeneration conditions. Engine speed and load is limited to reduce further hydrocarbon ingestion.