Inventors:
Freeman C. Gates - Bloomfield Hills MI
Gregory McCliment - Royal Oak MI
Joseph W. Pratt - Plymouth MI
Assignee:
Ford Motor Company - Dearborn MI
International Classification:
F02M 2507
G01F 142
Abstract:
A pressure feedback EGR system including an EGR tube having a metering orifice therein and extending between an exhaust passageway and an intake passageway of the internal combustion engine, a first pressure tap connected to the EGR tube on one side of the metering orifice, a second pressure tap connected to the EGR tube on the other side of the metering orifice, and the first pressure tap and the second pressure tap each having an end disposed within the EGR tube and with each end being partially closed to form an orifice extending therethrough to reduce noise from pulsations across the metering orifice.