US 10,094,350 B2Granted

Injection valve

AssigneeContinental Automotive GmbH

InventorsStefano Filippi, Mauro Grandi, Francesco Lenzi, Valerio Polidori

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present disclosure relates to an injection valve. The valve may comprise a fluid inlet tube with a recess, a valve body, a valve needle, a spring element, and an elastic body. The valve body may have a central longitudinal axis and a cavity with a fluid outlet portion. The valve needle may be arranged in the recess of the fluid inlet tube and movable in the cavity. The spring element and elastic body may be arranged in the recess and interact with a portion of the valve body on one side and with a spring rest fixed to the valve needle on another side. The elastic body and the spring element are compressed as the valve needle is moved along the longitudinal axis away from its closing position. The elastic body, in the presence of a fluid pressure in the recess, exerts a fluid-pressure-dependent longitudinal force on the valve needle.

Claims10

Dependent claims

An injection valve comprising:

a fluid inlet tube with a recess,
a valve body having a central longitudinal axis, the valve body comprising a cavity with a fluid outlet portion,
a valve needle arranged in the recess of the fluid inlet tube and movable in the cavity along the central longitudinal axis, the valve needle preventing a fluid flow through the fluid outlet portion in a closed position and releasing the fluid flow through the fluid outlet portion in other positions,
a spring element and an elastic body, both arranged in parallel within the recess and interacting with a portion of the valve body on one side and with a spring rest fixed to the valve needle on another side,
wherein the elastic body and the spring element are compressed in parallel as the valve needle is moved along the longitudinal axis away from its closing position, and
the elastic body, in the presence of a fluid pressure in the recess, exerts a fluid-pressure-dependent longitudinal force on the valve needle.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/029,352Filed 13 Oct 2014
Priority: EP 1318854214 Oct 2013
Published: US 2016/0258405 A18 Sep 2016
Granted: 9 Oct 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F02M 61/08
Having valves , e.g. having a plurality of valves in series: the valves opening in direction of fuel flow
F02M 61/20
Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14: closing valves mechanically, e.g.…
F02M 63/0073
Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059: pressure balanced valves
F02M 2200/26
Details of fuel-injection apparatus, not otherwise provided for: fuel-injection apparatus with elastically deformable elements other than coil springs