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US 2014/0109871 A1Published application
Engine control system and method
AssigneeFord Global Technologies, LLC
InventorsChris Paul Glugla, Nelson William Morrow, Garlan J. Huberts
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for purging condensate from a charge air cooler to an engine intake while reducing misfire events related to the water ingestion. During the purging, a spark timing is adjusted based on the amount of condensate purged per cycle. The spark timing is adjusted differently when the condensate is purged during a tip-in versus a pro-active clean-out routine.
Claims20
A method for a boosted engine, comprising:
- purging condensate from a charge air cooler to an intake manifold;
- and
- adjusting spark timing based on an amount of condensate purged.
A method for a boosted engine, comprising:
- during a first condition, purging condensate from a charge air cooler to an intake manifold with spark timing advanced to MBT;
- and
- during a second condition, purging condensate from the charge air cooler to the intake manifold with spark timing retarded from MBT.
A method for a boosted engine comprising:
- purging condensate from a charge air cooler to an intake manifold by increasing airflow to the intake manifold;
- and
- adjusting a spark timing during the purging based on a pedal position.
Dependencies are inferred from the claim text.