Fuel injection valve
AssigneeRobert Bosch GmbH
InventorsFerdinand Reiter, Guenther Hohl
Life of this patent
Estimating the term…
Abstract
A fuel injection valve, which may be inserted into a locator bore of a cylinder head of an internal combustion engine, has a sealing ring located peripherally around the fuel injection valve in the locator bore. The sealing ring has a contact surface, having the shape of a spherical segment, toward the fuel injection valve, which presses against a corresponding counter surface, having the shape of a spherical segment, of the fuel injection valve.
Claims16
A fuel injection valve insertable into a locator bore of a cylinder head of an internal combustion engine, comprising:
- a sealing ring positioned peripherally around the fuel injection valve in the locator bore, the sealing ring including a contact surface to the fuel injection valve, the contact surface having a shape of a spherical segment and configured to press against a corresponding counter-surface of the fuel injection valve, the counter-surface having a shape of a spherical segment, wherein the sealing ring includes:
- a lower peripheral groove in a surface arranged on a combustion chamber side in an annular gap between the locator bore and the fuel injection valve;
- and
- an upper peripheral groove in a surface facing away from the combustion chamber in the annular gap between the locator bore and the fuel injection valve.
A fuel injection valve insertable into a locator bore of a cylinder head of an internal combustion engine, comprising:
- a sealing ring positioned peripherally around the fuel injection valve in the locator bore, the sealing ring including a contact surface to the fuel injection valve, the contact surface having a shape of a spherical segment and configured to press against a corresponding counter-surface of the fuel injection valve, the counter-surface having a shape of a spherical segment wherein the spherical segment shaped contact surface is configured to have a curvature over an entire height of the sealing ring.
A fuel injection valve insertable into a locator bore of a cylinder head of an internal combustion engine, comprising:
- a sealing ring positioned peripherally around the fuel injection valve in the locator bore, the sealing ring including a contact-surface to the fuel injection valve, the contact surface having a shape of a spherical segment and configured to press against a corresponding counter-surface of the fuel injection valve, the counter-surface having a shape of a spherical segment, wherein the sealing ring includes a lower peripheral groove in a surface arranged on a combustion chamber side in an annular gap between the locator bore and the fuel injection valve.
A fuel injection valve insertable into a locator bore of a cylinder head of an internal combustion engine, comprising:
- a sealing ring positioned peripherally around the fuel injection valve in the locator bore, the sealing ring including a contact surface to the fuel injection valve, the contact surface having a shape of a spherical segment and configured to press against a corresponding counter-surface of the fuel injection valve, the counter-surface having a shape of a spherical segment, wherein the sealing ring includes an upper peripheral groove in a surface facing away from a combustion chamber in an annular gap between the locator bore and the fuel injection valve.
Dependencies are inferred from the claim text.