In-line noise filtering device for fuel system
AssigneeRobert Bosch GmbH
InventorsVenkatesh Kannan, Michael U. Fischer
Life of this patent
Estimating the term…
Abstract
A fuel injection system includes a fuel supply rail having a supply opening. A fuel injector is coupled to the fuel supply rail and configured to control the delivery of fuel from the fuel supply rail through the supply opening. A noise filtering device engages an upstream end of the fuel injector. The noise filtering device has a projecting portion extending at least partially into the supply opening along an axis, and the noise filtering device defines a restriction passage for directing fuel from the supply rail into the fuel injector. A face seal is established at a transverse face adjacent the supply opening.
Claims18
A fuel injection system comprising:
- a fuel supply rail having a supply opening;
- a fuel injector coupled to the fuel supply rail at the supply opening and configured to control the delivery of fuel from the fuel supply rail;
- a fuel rail connector defining a substantially transverse face adjacent the supply opening, at least a portion of the fuel injector being received within the fuel rail connector;
- and
- a noise filtering device engaging an upstream end of the fuel injector, the noise filtering device including
- a projecting portion extending at least partially into the supply opening, and
- a face-sealing portion configured to abut the substantially transverse face to prevent fuel from filling the fuel rail connector.
A fuel injection system comprising:
- a fuel supply rail having a supply opening;
- a fuel injector coupled to the fuel supply rail and configured to control the delivery of fuel from the fuel supply rail through the supply opening;
- a noise filtering device engaging an upstream end of the fuel injector, the noise filtering device having a projecting portion extending at least partially into the supply opening along an axis, and wherein the noise filtering device defines a restriction passage for directing fuel from the supply rail into the fuel injector;
- and
- a face seal established at a transverse face adjacent the supply opening.
Dependencies are inferred from the claim text.