Invention Grant
US09228512B2 EGR flow metering systems and methods 有权
EGR流量计量系统和方法

EGR flow metering systems and methods
Abstract:
Methods and systems for metering at least one EGR valve to a position determined to pass a desired EGR flow for a given set of engine characteristics. The methods include determining the EGR valve position based on pipe flow characteristics, or determining the EGR valve position based on pipe flow characteristics when differential pressure across the EGR valve is less than a pressure threshold.
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