EXHAUST GAS AFTERTREATMENT SYSTEM AND METHOD

World Intellectual Property Organization Patent

APP PUB NO WO-2022229720-A1
SERIAL NO

PCTIB2022052049

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Abstract

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An exhaust gas aftertreatment (EAT) system (110) for receiving exhaust gases from an internal combustion engine has a diesel oxidation catalyst (DOC) (112) upstream and in close proximity to a diesel particulate filter (DPF) (114). A pressure differential sensor (140) is configured to measure a pressure differential across the DOC and the DPF between a first measurement position upstream of the DOC and a second measurement position downstream of the DPF. A method of operating the EAT system is also disclosed which includes using a mathematical model to determine a pressure drop occurring in the system between the first and second measurement positions outside of the DPF. The modelled pressure drop is used together with a measured pressure drop to derive a value for the pressure drop across the DPF itself for use in a model to determine the soot loading of the DPF.

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Patent Owner(s)

Patent OwnerAddress
AGCO INT GMBHCH

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Inventor(s)

Inventor Name Address
HAPPONEN MATTI 06101 PORVOO
HEIKKILA JUHA 37240 LINNAVUORI
LIVONEN MARKUS C/O AGCO POWER LINNAVUORENTIE 8-10 37240 LINNAVUORI 37240
SIHVOLA JUHO 37240 LINNAVUORI

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