公开(公告)号：US20220213852A1

公开(公告)日：2022-07-07

申请号：US17607671

申请日：2020-04-30

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： Brandon Dennis Biller ,  Jim Kevin Spring ,  Douglas Anthony Hughes ,  Joshua Kreucher ,  Kevin Snyder

IPC: F02M26/34 ,  F01M11/02 ,  F01M9/10 ,  F04C18/12

Abstract: 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.

公开(公告)号：US11840992B2

公开(公告)日：2023-12-12

申请号：US17607671

申请日：2020-04-30

Applicant: Eaton Intelligent Power Limited

Inventor： Brandon Dennis Biller ,  Jim Kevin Spring ,  Douglas Anthony Hughes ,  Joshua Kreucher ,  Kevin Snyder

IPC: F02M26/34 ,  F01M9/10 ,  F01M11/02 ,  F04C18/12

CPC classification number: F02M26/34 ,  F01M9/10 ,  F01M11/02 ,  F04C18/126 ,  F04C2240/30 ,  F04C2240/40

Abstract: 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.