Method of compensating for boil-off alcohol in a flexible fueled

Details Method of compensating for boil-off alcohol in a flexible fueled Method of compensating for boil-off alcohol in a flexible fueled

1997-10-29

1999-06-29

Kwon, John

Internal-combustion engines

Miscellaneous

Fuels, lubricants and additives

123681, 123683, 123686, F02B 7512

Patent

active

059153423

ABSTRACT:
The present invention provides a method of controlling combustion parameters of an internal combustion engine without a PCV solenoid during a boil-off condition. The methodology detects a boil-off condition and implements one of two modes of boil-off compensation depending on the active status of an inferred alcohol content multiplier update system. The methodology also determines the nature of the air-flow through the internal combustion engine and determines the level of boil-off corruption present and the time when the corruption is complete. After the boil-off condition is determined to be complete, control of the combustion parameters are returned to a normal regime of a flexible fuel compensation system using the inferred alcohol content from the employed mode of boil-off compensation.

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