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US 11,208,974 B2Granted
Fuel pump
AssigneeDelphi Technologies IP Limited
InventorsToby J. Pedley, Paul Buckley, Adam Tully
Life of this patent
Estimating the term…
Abstract
A pump body of a high pressure fuel pump defines a compression chamber in fluid communication with a first recess dug in a first outer face. A second recess is dug in a second outer face of the body. An inlet channel opens in a conduit extending between the first recess and the second recess.
Claims15
A pump body of a high pressure fuel pump of a fuel injection equipment of an internal combustion engine, said pump body comprising:
- a bore extending along a pumping axis between a lower end opening in a lower face of the pump body and an upper end partially defining a compression chamber;
- a first recess dug in a first outer face of the pump body and having a first lateral face extending along a first axis toward a first bottom that is in fluid communication with said compression chamber;
- a second recess dug in a second outer face of the pump body and having a second lateral face extending along a second axis toward a second bottom that is also in fluid communication with said compression chamber;
- a between-recesses-conduit extending between said first recess where it opens in said first lateral face and said second recess where it opens in said second lateral face so that said first recess and said second recess are in permanent fluid communication with one another;
- and
- an inlet channel in which, in use, a fuel at a relatively low pressure enters the high pressure fuel pump, said inlet channel opening in said between-recesses-conduit such that said inlet channel intersects with said between-recess-conduit at a location between said first recess and said second recess.
3 more elements
A high pressure pump comprising:
- a pump body having:
- a bore extending along a pumping axis between a lower end opening in a lower face of the pump body and an upper end partially defining a compression chamber;
- a first recess dug in a first outer face of the pump body and having a first lateral face extending along a first axis toward a first bottom that is in fluid communication with said compression chamber;
- a second recess dug in a second outer face of the pump body and having a second lateral face extending along a second axis toward a second bottom that is also in fluid communication with said compression chamber;
- a between-recesses-conduit extending between said first recess where it opens in said first lateral face and said second recess where it opens in said second lateral face so that said first recess and said second recess are in permanent fluid communication with one another;
- and
- an inlet channel in which, in use, a fuel at a relatively low pressure enters the high pressure fuel pump, said inlet channel opening in said between-recesses-conduit such that said inlet channel intersects with said between-recess-conduit at a location between said first recess and said second recess;
- an inlet valve assembly arranged in either the first recess or the second recess;
- and
- an outlet valve assembly arranged in the other of the first recess and the second recess in which the inlet valve assembly is not arranged.
7 more elements
Dependencies are inferred from the claim text.