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1. WO2020221478 - EGR PUMP SYSTEM WITH OVERHUNG ROTORS

Publication Number WO/2020/221478
Publication Date 05.11.2020
International Application No. PCT/EP2020/025201
International Filing Date 30.04.2020
IPC
F04C 18/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18Rotary-piston pumps specially adapted for elastic fluids
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
CPC
F04C 18/126
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
18Rotary-piston pumps specially adapted for elastic fluids
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
126with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
F04C 27/009
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
27Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
008for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
009Shaft sealings specially adapted for pumps
Applicants
  • EATON INTELLIGENT POWER LIMITED [IE]/[IE]
Inventors
  • BILLER, Brandon Dennis
  • SPRING, Jim Kevin
  • HUGHES, Douglas Anthony
  • KREUCHER, Joshua
  • SNYDER, Kevin
Agents
  • BRP RENAUD UND PARTNER MBB
Priority Data
62/841,48901.05.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EGR PUMP SYSTEM WITH OVERHUNG ROTORS
(FR) SYSTÈME DE POMPE RGE À ROTORS EN PORTE-À-FAUX
Abstract
(EN)
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.
(FR)
L'invention concerne un système de pompe de recirculation de gaz d'échappement destiné à un moteur à combustion interne, le système comprenant une source de gaz RGE et un ensemble moteur électrique. Un dispositif Roots est couplé au moteur électrique. Le dispositif Roots comprend un boîtier délimitant un volume interne, le boîtier comprenant un orifice d'entrée radial permettant de recevoir la source de gaz RGE et un orifice de sortie permettant d'expulser le gaz RGE du boîtier. Des rotors sont disposés dans le volume interne et reliés au moteur électrique. Un carter de transmission est fixé au boîtier. Le carter de transmission comprend des tourillons formés à l'intérieur qui reçoivent des paliers destinés à porter les rotors sur uniquement une seule extrémité des rotors.
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