Sensor based measurement and purge control of fuel vapors in internal combustion engines
First Claim
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1. A fuel control system for a vehicle, comprising:
- a pressure compensation module that compensates an intake oxygen signal based on an intake pressure signal and that generates a compensated intake oxygen signal;
a blow-by estimation module that generates an estimated blow-by flow;
a purge flow estimation module that estimates the purge flow based on the compensated intake oxygen signal and the estimated blow-by flow; and
a fuel control estimation module that reduces fueling to injectors of an engine of the vehicle based on the purge flow.
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Abstract
A fuel control system for a vehicle includes a pressure compensation module that compensates an intake oxygen signal based on an intake pressure signal and that generates a compensated intake oxygen signal. A blow-by estimation module generates an estimated blow-by flow. A purge flow estimation module estimates the purge flow based on the compensated intake oxygen signal and the estimated blow-by flow. A fuel control estimation module reduces fueling to injectors of an engine of the vehicle based on the purge flow.
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Citations
20 Claims
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1. A fuel control system for a vehicle, comprising:
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a pressure compensation module that compensates an intake oxygen signal based on an intake pressure signal and that generates a compensated intake oxygen signal; a blow-by estimation module that generates an estimated blow-by flow; a purge flow estimation module that estimates the purge flow based on the compensated intake oxygen signal and the estimated blow-by flow; and a fuel control estimation module that reduces fueling to injectors of an engine of the vehicle based on the purge flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling a fuel control system of a vehicle, comprising:
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compensating an intake oxygen signal based on an intake pressure signal to generate a compensated intake oxygen signal; generating an estimated blow-by flow; estimating a purge flow based on the compensated intake oxygen signal and the estimated blow-by flow; and reducing fueling to injectors of an engine of the vehicle based on the purge flow. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification