High-pressure fuel pump and pressure control device
AssigneeContinental Automotive GmbH
InventorJoerg Bernhardt
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a device for pressure control, including a rod and a plunger. The rod has a first end region delimiting a pressurized space and is movable along an axis between a top dead center and a bottom dead center. The plunger has a traverse substantially perpendicular to a plunger axis transmitting kinetic energy from a plunger drive to the rod in a contact region between a traverse surface and a second end region of the rod arranged opposite the first end region. The rod includes a calotte-shaped end region in the contact region of the rod and the traverse includes a calotte-shaped recess in the contact region of the traverse.
Claims9
A high-pressure pump for pressurizing a fuel, the high pressure pump comprising:
- a piston movable along a piston axis between a top dead center and a bottom dead center,
- a plunger with a traverse arranged substantially perpendicular to a plunger axis and transmitting kinetic energy from a plunger drive to the piston in a contact region between a traverse surface and an end region of the piston,
- wherein the piston includes a calotte-shaped end region in the contact region of the piston, and the traverse includes a calotte-shaped recess in the contact region of the traverse;
- wherein a recess radius of the calotte-shaped recess of the traverse is at least twice a piston end radius of the calotte-shaped end region of the piston.
A device for influencing a pressure in a medium, the device comprising:
- a rod with a first end region delimiting a space filled with the medium, the rod movable along a rod axis between a top dead center and a bottom dead center;
- a plunger having a traverse arranged substantially perpendicular to a plunger axis for transmitting kinetic energy from a plunger drive to the rod in a contact region between a traverse surface and a second end region of the rod arranged opposite the first end region;
- wherein the rod includes a calotte-shaped end region in the contact region of the rod and the traverse includes a calotte-shaped recess in the contact region of the traverse;
- and
- wherein a recess radius of the calotte-shaped recess of the traverse is at least twice a rod end radius of the calotte-shaped end region of the rod.
A valve for an internal combustion engine, the valve comprising:
- a rod with a first end region delimiting a space filled with a fuel, the rod movable along a rod axis between a top dead center and a bottom dead center to open an engine valve;
- a plunger having a traverse arranged substantially perpendicular to a plunger axis for transmitting kinetic energy from a plunger drive to the rod in a contact region between a traverse surface and a second end region of the rod arranged opposite the first end region;
- wherein the rod includes a calotte-shaped end region in the contact region of the rod and the traverse includes a calotte-shaped recess in the contact region of the traverse;
- and
- wherein a recess radius of the calotte-shaped recess of the traverse is at least twice a rod end radius of the calotte-shaped end region of the rod.
Dependencies are inferred from the claim text.