Patent ID: 11927124
Assignee: CUMMINS POWER GENERATION LIMITED
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 6:
7. A dual fuel system, comprising:
a dual fuel engine system including
a first fuel source,
a second fuel source, and
a cylinder structured to combust a first fuel from the first fuel source and a second fuel from the second fuel source simultaneously; and

an aftertreatment system including
a selective catalytic reduction system including a vanadium substrate structured to receive exhaust gases from the cylinder,
an ammonia slip catalyst positioned downstream of the selective catalytic reduction system, and
an oxidation catalyst positioned downstream of the ammonia slip catalyst,
wherein the selective catalytic reduction catalyst including the vanadium substrate is positioned directly upstream of the ammonia slip catalyst; and

one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
send a feedback substitution rate command to the dual fuel engine system based on a system out emissions value; and control operation of the dual fuel engine system using the feedback substitution rate, wherein the feedback substitution rate is updated based on a substitution rate table.