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US 10,119,503 B2Granted
Method and system for vacuum generation in an intake
AssigneeFord Global Technologies, LLC
InventorsXiaogang Zhang, Jianwen James Yi
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a vacuum generating device. In one example, a vacuum generating device comprises a venturi device upstream of an annular fixture for adjusting an amount of vacuum provided to a vacuum consumption device.
Claims15
A system comprising:
- a venturi device displaceable along an axis of an intake passage;
- an inwardly projecting fixture radially spaced away from the axis and in sealing contact with an intake pipe of the intake passage;
- and
- a first venturi passage located between the venturi device and the intake pipe and a second venturi passage located between the axis and the fixture, wherein the venturi device is annular and radially spaced away from the intake pipe, and where the fixture is radially spaced away from the axis, and where a smallest radial distance between the intake pipe and the venturi device is smaller than a smallest radial distance between the axis and the fixture, wherein the smallest radial distance between the axis and the fixture corresponds to an apex of the fixture, and where the apex of the fixture comprises a plurality of apertures located on the fixture.
1 more element
A system comprising:
- an intake passage of an intake pipe;
- a tear-drop shaped hollow and sliding object radially spaced away from the intake pipe;
- an inwardly protruding projection from the intake pipe surrounding the object;
- a passage through the projection forming a first venturi passage;
- and
- one or more openings in the object exposing an interior of the object to the intake pipe, the openings downstream of an apex of an outer surface curvature of the object, wherein the apex of the outer surface of the object touches a surface of the projection in a fully closed position, and where the one or more openings in the object are fluidly coupled to the first venturi passage in the fully closed position, wherein the object and projection are fluidly coupled to a vacuum consumption device, and where the fully closed position provides more vacuum to the vacuum consumption device than other positions of the object, and where ambient air does not flow to an intake manifold when the object is in the fully closed position.
3 more elements
A system comprising:
- an engine intake passage;
- a tear-drop shaped hollow and sliding object radially spaced away from the intake pipe;
- an annular fixture having a passage therethrough fluidically coupled with apertures at a narrowed apex of the fixture;
- and
- openings in the object exposing an interior of the object to the intake pipe, downstream of the apex, fluidically coupled with the passage exterior to the intake passage, and combining vacuum generation.
2 more elements
Dependencies are inferred from the claim text.