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US 9,133,796 B2Granted
Multi-path purge ejector system
AssigneeFord Global Technologies, LLC
InventorsKevin William Plymale, Aed M. Dudar, Robert Roy Jentz, Scott A. Bohr, Mark W. Peters
Life of this patent
Estimating the term…
Abstract
Systems and methods for a multi-path purging ejector are disclosed. In one example approach, a multi-path purge system for an engine comprises an ejector including a restriction, first and second inlets, and an outlet, and a shut-off valve hard-mounted to an intake of the engine and coupled to the outlet.
Claims18
A multi-path purge system for an engine, comprising:
- an ejector including a restriction, first and second inlets, and an outlet;
- and
- a shut-off valve hard-mounted to an intake of the engine and coupled to the outlet,
- wherein the shut-off valve is configured to close in response to a leak detected upstream of the outlet.
1 more element
A multi-path purge system for an engine with a turbocharger, comprising:
- an ejector including an orifice, first and second inlets, and an outlet;
- and
- a shut-off valve hard-mounted to an intake of the engine upstream of a compressor of the turbocharger and coupled to the outlet,
- wherein the shut-off valve is configured to close in response to a disconnection of the shut-off valve with the intake of the engine.
1 more element
A method for a vehicle having a fuel vapor purge system comprising an ejector, comprising:
- in response to a purge request during a boost condition:
- directing air from an engine intake downstream of a compressor through a converging orifice in the ejector and into an engine intake upstream of the compressor, wherein an outlet of the orifice is coupled to a shut-off valve hard-mounted to the engine intake upstream of the compressor;
- drawing an amount of fuel vapor from a fuel vapor canister via a low pressure region of the ejector;
- supplying the amount of fuel vapor to the engine intake upstream of the compressor via the outlet;
- and
- in response to detection of a leak in the fuel vapor purge system, closing the shut-off valve.
3 more elements
Dependencies are inferred from the claim text.