Balanced pressure gerotor fuel pump
Abstract
A gerotor pump for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances and by including features that promote the formation of lubricating films of pressurized fuel. Features of the improved pump include the use of a shadow port in the side plate opposite the outlet port to promote balancing of high fuel pressures on the opposite sides of the rotors. Inner and outer rotors have predetermined side clearances with the clearances of the outer rotor being greater than those of the inner rotor in order to promote fuel pressure balance on the sides of the outer rotor. Support of the inner rotor and a drive shaft on a single bushing with bearing sleeves maintains concentricity. Additional features are disclosed.
- Inventors:
- Issue Date:
- Research Org.:
- Delphi Technologies, Inc., Troy, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174967
- Patent Number(s):
- 6769889
- Application Number:
- 10/405,657
- Assignee:
- Delphi Technologies, Inc. (Troy, MI)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04C - ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05C - INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- DOE Contract Number:
- SC02-98EE50526
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS
Citation Formats
Raney, Michael Raymond, and Maier, Eugen. Balanced pressure gerotor fuel pump. United States: N. p., 2004.
Web.
Raney, Michael Raymond, & Maier, Eugen. Balanced pressure gerotor fuel pump. United States.
Raney, Michael Raymond, and Maier, Eugen. Tue .
"Balanced pressure gerotor fuel pump". United States. https://www.osti.gov/servlets/purl/1174967.
@article{osti_1174967,
title = {Balanced pressure gerotor fuel pump},
author = {Raney, Michael Raymond and Maier, Eugen},
abstractNote = {A gerotor pump for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances and by including features that promote the formation of lubricating films of pressurized fuel. Features of the improved pump include the use of a shadow port in the side plate opposite the outlet port to promote balancing of high fuel pressures on the opposite sides of the rotors. Inner and outer rotors have predetermined side clearances with the clearances of the outer rotor being greater than those of the inner rotor in order to promote fuel pressure balance on the sides of the outer rotor. Support of the inner rotor and a drive shaft on a single bushing with bearing sleeves maintains concentricity. Additional features are disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 03 00:00:00 EDT 2004},
month = {Tue Aug 03 00:00:00 EDT 2004}
}