Method and system for engine unburned hydrocarbon control
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 ar...
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Main Authors | , , , , , , |
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Format | Patent |
Language | English |
Published |
07.07.2015
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Subjects | |
Online Access | Get full text |
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Summary: | 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. |
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Bibliography: | Application Number: US201213569041 |