Patent ID: 8783015

Claim:
An internal combustion engine system, comprising: a first internal combustion engine; a second internal combustion engine; a first diesel particulate filter (DPF) disposed in an engine exhaust downstream of the first engine; a second DPF disposed in an engine exhaust downstream of the second engine; a first tee disposed downstream of the first DPF, the first tee having a first EGR leg and a first exhaust leg; a second tee disposed downstream of the second DPF, the second tee having a second EGR leg and a second exhaust leg; an EGR system fluidly coupled with the first EGR leg and with the second EGR leg, the EGR system comprising: an EGR cooler and an EGR pump; a first turbocharger having a turbine disposed in the first exhaust leg; a second turbocharger having a turbine disposed in the second exhaust leg; a bypass duct fluidly coupling an inlet and an outlet of the EGR pump; controllable valve disposed in the bypass duct; and an electronic control unit (ECU) coupled to the controllable valve.