PURGE VALVE AND FUEL VAPOR MANAGEMENT SYSTEM
First Claim
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1. A purge valve for use in a fuel combustion engine comprising:
- a first inlet for coupling with an air cleaner to receive a first flow from the air cleaner;
a second inlet for coupling with an evaporative canister to receive a second flow from the evaporative canister;
an outlet fluidically coupled to an upstream side of a throttle providing a fluid path to a combustion chamber of the engine; and
a controller with instructions to selectively adjust relative amounts of the first flow and the second flow allowed to pass through the outlet and to the combustion chamber.
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Abstract
A purge valve and a fuel vapor management system for use with an engine emission control system are disclosed. The purge valve may include a first inlet for receiving a first flow of air from an air cleaner, a second inlet for receiving a second flow of purge vapors from an evaporative canister, and an outlet directing a controlled mixture of the first and second flows to an engine, upstream of an intake throttle. Relative amounts of the first flow and second flow may be selectively controlled by varying a position of the valve.
36 Citations
20 Claims
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1. A purge valve for use in a fuel combustion engine comprising:
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a first inlet for coupling with an air cleaner to receive a first flow from the air cleaner; a second inlet for coupling with an evaporative canister to receive a second flow from the evaporative canister; an outlet fluidically coupled to an upstream side of a throttle providing a fluid path to a combustion chamber of the engine; and a controller with instructions to selectively adjust relative amounts of the first flow and the second flow allowed to pass through the outlet and to the combustion chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An engine valve comprising:
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a first inlet for receiving atmospheric air as a first flow; a second inlet for receiving a purge flow from an evaporative canister as a second flow, the evaporative canister fluidically coupled with a fuel tank and configured for absorbing fuel vapor, the purge flow including desorbed fuel vapor; and an outlet for directing a selected mixture of the first flow and the second flow to an engine combustion chamber. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A fuel vapor management system for an engine comprising:
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an evaporative canister including a fuel vapor absorbing material; a turbo compressor on an induction air path for compressing an induction fluid before the induction fluid is passed to an intake manifold of the engine; a valve on the induction air path upstream from the turbo compressor having a first inlet to receive a first flow, and having a second inlet to receive a second flow from the evaporative canister; and the valve controllable to adjust relative amounts of the first flow and the second flow to pass to the turbo compressor. - View Dependent Claims (19, 20)
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Specification