公开(公告)号：US12123380B2

公开(公告)日：2024-10-22

申请号：US18251837

申请日：2021-11-04

Applicant: Eaton Intelligent Power Limited

Inventor： Douglas Anthony Hughes ,  Brandon Dennis Biller ,  Michael Coates ,  Nathan DeVille ,  James J. Malone ,  Jana Malatincova ,  Filip Marek

IPC: F02M26/34 ,  F02D41/00 ,  F04C18/12 ,  F04C28/06

CPC classification number: F02M26/34 ,  F02D41/0047 ,  F04C18/126 ,  F04C28/06

Abstract: An EGR pump system includes an EGR pump assembly including an electric motor assembly coupled to a transmission assembly. A roots device is coupled to the electric motor through the transmission assembly. The roots device includes a housing defining an internal volume and rotors are disposed in the internal volume and connected to the transmission assembly. An EGR locking mechanism is attached to the EGR pump assembly. The EGR locking mechanism is selectively connected to the transmission assembly locking the transmission assembly and preventing rotation of the rotors.