Eaton Intelligent Power Limited

Jim Kevin Spring

Douglas Anthony Hughes

Brandon Dennis Biller

Matthew James Fortini

Jesse Drummond

Kevin Snyder

Joshua Kreucher

Exhaust gas recirculation pump () for an internal combustion engine that includes an electric motor () disposed within a housing (). A Roots device () is coupled to the electric motor () and includes a housing () defining an internal volume () in which rotors () are disposed and are connected to the electric motor (). The electric motor housing () includes a coolant path () formed therein which extends from a coolant inlet () to a coolant outlet (), both coupled to an engine coolant circulation system. The housing includes an oil path () formed therein. The oil path includes an oil inlet () extending to at least one oil outlet (). The oil inlet and outlet are coupled to an engine oil circulation system wherein the oil path () lubricates bearings () and a transmission assembly () of the exhaust gas recirculation pump ().

EGR pump system and control method of EGR pump

A method of operating exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit linked to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target in step Swherein when motor speed=predetermined target then; determining if a motor torque is within a predetermined target in step Swherein when motor torque=predetermined target then; determining if a motor temperature is within a predetermined target in step Swherein when motor temperature=predetermined target then; and maintaining operation of the exhaust gas recirculation pump.

An exhaust gas recirculation pump system for an internal combustion engine includes an EGR gas source and an electric motor assembly. A roots device is coupled to the electric motor. The roots device includes a housing defining an internal volume wherein the housing includes a radial inlet port receiving the EGR gas source and an outlet port expelling the EGR gas from the housing. Rotors are disposed in the internal volume and connected to the electric motor. A transmission housing is attached to the housing. The transmission housing includes journals formed therein receiving bearings that support the rotors on only a single end of the rotors.

EGR pump system with overhung rotors

A method of operating an exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit lined to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target (step SI), wherein when the motor speed is within the predetermined target then; determining if a motor torque is within a predetermined target (step S) wherein when the motor torque is within the predetermined target then; determining if a motor temperature is within a predetermined target (step S) wherein when the motor temperature is within the predetermined target then; maintaining operation of the exhaust gas recirculation pump.

Growing community of inventors

Brighton, MI, United States of America

Jim Kevin Spring