US 12,116,944 B2
Methods and systems for EGR system
Jose Francisco Martinez Leyva, Mexico City (MX); Sumanth Reddy Dadam, New Hudson, MI (US); Patrick Edward Smithberger, Marine City, MI (US); Adam Krach, Canton, MI (US); and Edward Doemer, Dearborn Heights, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Jun. 10, 2022, as Appl. No. 17/806,310.
Prior Publication US 2023/0399989 A1, Dec. 14, 2023
Int. Cl. F02D 41/00 (2006.01); F02M 26/47 (2016.01)
CPC F02D 41/0077 (2013.01) [F02D 41/005 (2013.01); F02M 26/47 (2016.02); F02D 2200/021 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/06 (2013.01); F02D 2200/101 (2013.01); F02D 2200/703 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of altitude compensation of a delta pressure over valve (DPOV) exhaust gas recirculation (EGR) system, comprising:
adjusting a valve controlling flow through the EGR system by providing a correction to a position of the EGR valve based on a pressure ratio normalized to a manifold air pressure (MAP) and a barometric pressure (BP),
wherein the DPOV is sensed via an exhaust gas pressure (EXP) sensor and an EGR pressure (EGRP) sensor, the EXP positioned upstream of the EGR valve and the EGRP positioned downstream of the EGR valve relative to a direction of exhaust gas flow.