High-Pressure Fuel Pump for a Fuel System for an Internal Combustion Engine
AssigneeRobert Bosch GmbH
InventorsGerd Teike, Michael Kleindl
Life of this patent
Estimating the term…
Abstract
A high-pressure fuel pump for a fuel delivery system of an internal combustion engine includes a pressure limiting valve positioned between an outlet and an inlet of the pump. The valve includes a spring-loaded closing element and a closing body that radially holds the closing element in place, and that has a concave receiving portion configured to at least partially receive the closing element. The receiving portion has a radially outer first area with a first opening angle, and a radially inner second area with a second opening angle larger than the first opening angle. The first area and the second area are located outside of a contact region between the closing element and the closing body.
Claims8
A high-pressure fuel pump for a fuel system of an internal combustion engine, comprising:
- a pressure limiting valve positioned hydraulically between an outlet and a region which is upstream of the outlet, and including:
- a spring-loaded closing element;
- and
- a closing body configured to radially secure the closing element, and having a concave receiving section configured to at least partially receive the closing element, the receiving section having:
- a radially outer first region with a first opening angle;
- and
- a radially inner second region with a second opening angle that is larger than the first opening angle;
- wherein the first region and second region are located radially outside a contact region between the closing element and the closing body.
A pressure limiting valve for a high-pressure fuel pump, comprising:
- a spring-loaded closing element;
- and
- a closing body configured to radially secure the closing element, and having a concave receiving section configured to at least partially receive the closing element, the receiving section having:
- a radially outer first region with a first opening angle;
- and
- a radially inner second region with a second opening angle that is larger than the first opening angle;
- wherein the first region and second region are located radially outside a contact region between the closing element and the closing body.
Dependencies are inferred from the claim text.