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US 6,655,909 B2Granted
High flow fuel pump
AssigneeVisteon Global Technologies, Inc.
InventorsDeQuan Yu, Sheven Sharp
Life of this patent
Estimating the term…
Abstract
A fuel pump includes a pump housing with a motor which is adapted to rotate a shaft with a ring impeller mounted thereon. A bottom is mounted to the housing and has an outlet. A cover is mounted on an end of the housing and is attached to the bottom with the ring impeller enclosed between the cover and the bottom. The cover includes a first side having a fuel inlet orifice and a second side having a flow channel formed therein. The inlet orifice extends through the cover in fluid communication with the flow channel. The flow channel includes an inlet, a ramp, a ramp end and a main channel. The inlet includes a smooth curved profile. The ramp connects the inlet to the ramp end. The ramp end connects the ramp to the main channel.
Claims40
A cover for a fuel pump having a ring impeller comprising:
- a first side having a fuel inlet orifice and a second side defining a sealing surface and having a flow channel formed therein, said fuel inlet orifice extending through said cover in fluid communication with said flow channel;
- said flow channel having a first section defining an inlet, a second section defining a ramp, a third section defining a ramp end and a fourth section defining a main channel, a total length of said inlet, said ramp and said ramp end being defined by an arc extending between about 40 degrees and about 90 degrees from said inlet orifice;
- said inlet having a length that is about 10% of the total length of said arc, said ramp having a length that is about 70% of the total length of said arc, and said ramp end having a length that is about 20% of the total length of said arc;
- said inlet having a smooth curved profile, said ramp extending from said inlet at an angle relative to said sealing surface and connecting said inlet to said ramp end and said ramp end extending from said ramp at an angle relative to said second side and connecting said ramp to said main channel.
1 more element
A fuel pump comprising:
- a pump housing;
- a motor positioned within paid housing and being adapted to rotate a shaft protruding therefrom;
- a ring impeller attached to said shaft;
- a bottom mounted to said housing and having an outlet in fluid communication with a motor chamber surrounding said motor, said bottom having an opening for allowing said shaft to pass through wherein said impeller is attached to said shaft with said bottom disposed between said impeller and said motor;
- a cover mounted on an end of said housing and attached to said bottom with said ring impeller enclosed between said cover and said bottom;
- said cover including a first side having a fuel inlet orifice and a second side defining a sealing surface and having a flow channel formed therein, said inlet orifice extending through said cover in fluid communication with said flow channel;
- said flow channel having a first section defining an inlet, a second section defining a ramp, a third section defining a ramp end and a fourth section defining a main channel, a total length of said inlet, said ramp and said ramp end being defined by an arc extending between about 40 degrees and about 90 degrees from said inlet orifice;
- said inlet having a length that is about 10% of the total length of said arc, said ramp having a length that is about 70% of the total length of said arc, and said ramp end having a length that is about 20% of the total length of said arc;
- said inlet having a smooth curved profile, said ramp extending from said inlet at an angle relative to said second side and connecting said inlet to said ramp end and said ramp end extending from said ramp at an angle relative to said second side and connecting said ramp to said main channel.
6 more elements
A fuel pump comprising:
- a pump housing;
- a motor positioned within said housing and being adapted to rotate a shaft protruding therefrom;
- a ring impeller attached to paid shaft;
- a bottom mounted to said housing and having an outlet in fluid communication with a motor chamber surrounding said motor, said bottom having an opening for allowing said shaft to pass through wherein said impeller is attached to said shaft with said bottom disposed between said impeller and said motor;
- a cover mounted on an end of said housing and attached to said bottom with said ring impeller enclosed between said cover and said bottom;
- said cover including a first side having a fuel inlet orifice and a second side defining a sealing surface and having a flow channel formed therein, said inlet orifice extending through said cover in fluid communication with said flow channel;
- said flow channel having a first section defining an inlet, a second section defining a ramp, a third section defining a ramp end and a fourth section defining a main channel;
- said inlet having a smooth curved profile, said ramp extending from said inlet at an angle of less than seven degrees relative to said second side and connecting said inlet to said ramp end and said ramp end extending from said ramp at an angle between about ten degrees and about twenty degrees relative to said second side and connecting said ramp to said main channel.
5 more elements
A cover for a fuel pump having a ring impeller comprising:
- a first side having a fuel inlet orifice and a second side defining a sealing surface and having a flow channel formed therein, said fuel inlet orifice extending through said cover in fluid communication with said flow channel;
- said flow channel having a first section defining an inlet, a second section defining a ramp, a third section defining a ramp end and a fourth section defining a main channel;
- said inlet having a smooth curved profile, said ramp extending from said inlet at an angle of less than seven degrees relative to said second side and connecting said inlet to said ramp end and said ramp end extending from said ramp at an angle between about ten degrees and about twenty degrees relative to said second side and connecting said ramp to said main channel.
Dependencies are inferred from the claim text.