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US 10,151,283 B2Granted
Evacuator with motive fin
AssigneeDayco IP Holdings, LLC
InventorsBrian M. Graichen, Keith Hampton
Life of this patent
Estimating the term…
Abstract
An evacuator is disclosed, and includes a body defining a central axis, a converging motive section, a diverging discharge section, at least one suction port, and at least one Venturi gap. The Venturi gap is located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. The evacuator also includes a fin positioned within the motive section of the body. The fin extends in the direction of the central axis.
Claims20
An evacuator, comprising:
- a body defining a central axis, a first tapering portion and a second tapering portion defining a passageway through the body, at least one Venturi gap located between an outlet end of the first tapering portion and an inlet end of the second tapering portion, and a suction port in fluid communication with the Venturi gap, wherein the outlet end of the first tapering portion defines an elliptically-shaped first opening into the at least one Venturi gap;
- and
- a single fin protruding inward into the passageway and extending in the direction of the central axis with a length from a starting point at the inlet end of the first tapering portion or an intermediate position within the first tapering portion to an ending point at the outlet end of the second tapering portion or an intermediate position within the second tapering portion;
- wherein the fin is either continuous through the Venturi gap or discontinuous at the Venturi gap.
1 more element
A turbocharged engine air system, comprising:
- a device requiring vacuum;
- a turbocharger having a compressor fluidly connected to an intake manifold of an engine;
- and
- an evacuator defining a motive section having an elliptically-shaped motive outlet, a discharge section, and a suction port, the evacuator including a Venturi gap positioned between the elliptically-shaped motive outlet and an inlet end of the discharge section, the Venturi gap in fluid communication with the suction port, wherein the discharge section of the evacuator is fluidly connected to the intake manifold of the engine at a location downstream of the compressor, and the suction port of the evacuator is fluidly connected to the device requiring vacuum;
- and
- a single fin protruding inward into the passageway and having a length from a starting point at the inlet end of the first tapering portion or an intermediate location within the first tapering portion to an ending point at the outlet end of the second tapering portion or an intermediate location within the second tapering portion;
- wherein the fin is either continuous through the Venturi gap or discontinuous at the Venturi gap.
4 more elements
A non-boosted engine air system, comprising:
- a device requiring vacuum;
- an intake manifold of an engine;
- and
- an evacuator defining a motive section having an elliptically-shaped motive outlet, a discharge section, and a suction port, the evacuator including a Venturi gap positioned between the elliptically-shaped motive outlet and an inlet end of the discharge section, the Venturi gap in fluid communication with the suction port, wherein the discharge section of the evacuator is fluidly connected to the intake manifold of the engine at a location downstream of the throttle, and the suction port of the evacuator is fluidly connected to the device requiring vacuum;
- and
- a single fin protruding inward into the passageway and extending from having a length from a starting point at the inlet end of the first tapering portion or an intermediate location within the first tapering portion to an ending point at the outlet end of the second tapering portion or an intermediate location within the second tapering portion;
- wherein the fin is either continuous through the Venturi gap or discontinuous at the Venturi gap.
4 more elements
Dependencies are inferred from the claim text.