Fuel injection valve
AssigneeRobert Bosch GmbH
InventorMichael McCormick
Life of this patent
Estimating the term…
Abstract
In a fuel injector a valve-closure member movable axially along a valve longitudinal axis and a valve-seat body are provided for opening and closing the valve. Allocated to the valve-seat body is a valve-seat face which cooperates with the valve-closure member. In this context, the valve-closure member is joined to the valve-seat body via a spring element designed in the form of a diaphragm spring. The spring element is arranged in such a manner that it pulls the valve-closure member toward the valve-seat face as a return spring in response to closing of the valve. The fuel injector is particularly suitable for use in fuel-injection systems of mixture-compressing internal combustion engines with externally supplied ignition.
Claims10
A fuel injection valve for supplying an internal combustion engine with fuel, the valve having a longitudinal valve axis, the valve comprising:
- a valve-closure member axially movable along the longitudinal valve axis for opening and closing the valve;
- a valve-seat body;
- a valve-seat face cooperating with the valve-seat body;
- and
- a spring element joining the valve-closure member to the valve-seat body;
- wherein the spring element is sleeve-shaped and has a spring configuration in a region.
Dependencies are inferred from the claim text.