Learned EGR valve position control
First Claim
1. An exhaust gas recirculation (EGR) valve positioning system, comprising:
- an actuate valve module that selectively uses learned and default variables as control variables to position an EGR valve;
an EGR valve position module that determines whether said EGR valve is positioned in a target position based on a position sensor signal; and
an adjust control variables module that communicates with said actuate valve module and said EGR valve position module and that adjusts said learned variables when said EGR valve position module determines that said EGR valve is positioned out of said target position.
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Accused Products
Abstract
An exhaust gas recirculation (EGR) valve positioning system according to the present invention includes an actuate valve module, an EGR valve position module, and an adjust control variables module. The actuate valve module selectively uses learned and default variables as control variables to position an EGR valve. The EGR valve position module determines whether the EGR valve is positioned in a target position. The adjust control variables module communicates with the actuate valve module and the EGR valve position module and adjusts the learned variables when the EGR valve position module determines that the EGR valve is positioned out of the target position.
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Citations
17 Claims
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1. An exhaust gas recirculation (EGR) valve positioning system, comprising:
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an actuate valve module that selectively uses learned and default variables as control variables to position an EGR valve; an EGR valve position module that determines whether said EGR valve is positioned in a target position based on a position sensor signal; and an adjust control variables module that communicates with said actuate valve module and said EGR valve position module and that adjusts said learned variables when said EGR valve position module determines that said EGR valve is positioned out of said target position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of positioning an exhaust gas recirculation (EGR) valve, comprising:
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selectively using learned and default variables as control variables to position the EGR valve; determining whether the position of the EGR valve is in a target position based on a position sensor signal; and adjusting said learned variables when the EGR valve is positioned out of said target position. - View Dependent Claims (9, 10, 11, 12)
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13. A method of positioning an exhaust gas recirculation (EGR) valve during a flow restriction test comprising:
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determining whether conditions have been met to enable the flow restriction test; selectively using learned and default variables as control variables to position the EGR valve if said conditions have been met to enable the flow restriction test; determining whether the position of the EGR valve is in a target position based on a position sensor signal; and adjusting said learned variables when the EGR valve is positioned out of said target position. - View Dependent Claims (14, 15, 16, 17)
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Specification