Latching canister vent valve
First Claim
1. An apparatus, comprising:
- a vapor purge system, including;
a carbon canister;
a canister vent valve in fluid communication with the carbon canister;
an inlet port being part of the canister vent valve;
a conduit, the conduit being connected to and in fluid communication with the carbon canister, and the conduit being connected to and in fluid communication with the inlet port of the canister vent valve;
a sensing unit mounted to the inlet port;
a pressure sensor being part of the sensing unit, the pressure sensor detecting pressure in the inlet port; and
a latching mechanism for changing the canister vent valve between an open position and a closed position, the latching mechanism being part of the canister vent valve;
wherein the latching mechanism is energized as the canister vent valve is changed between the open position and the closed position, and the latching mechanism is de-energized when the canister vent valve is held in the open position or held in the closed position.
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Accused Products
Abstract
A purge vapor system, which includes a fuel tank, a fuel tank isolation valve in fluid communication with the fuel tank, and a carbon canister in fluid communication with the fuel tank isolation valve. The purge vapor system also includes a canister vent valve in fluid communication with the carbon canister, an air filter in fluid communication with the canister vent valve, and a latching mechanism for changing the canister vent valve between an open position and a closed position, where the latching mechanism is part of the canister vent valve. The latching mechanism is energized as the latching mechanism changes the canister vent valve between the open position and the closed position, and the latching mechanism is de-energized as the canister vent valve is held in the open position or the closed position.
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Citations
12 Claims
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1. An apparatus, comprising:
a vapor purge system, including; a carbon canister; a canister vent valve in fluid communication with the carbon canister; an inlet port being part of the canister vent valve; a conduit, the conduit being connected to and in fluid communication with the carbon canister, and the conduit being connected to and in fluid communication with the inlet port of the canister vent valve; a sensing unit mounted to the inlet port; a pressure sensor being part of the sensing unit, the pressure sensor detecting pressure in the inlet port; and a latching mechanism for changing the canister vent valve between an open position and a closed position, the latching mechanism being part of the canister vent valve; wherein the latching mechanism is energized as the canister vent valve is changed between the open position and the closed position, and the latching mechanism is de-energized when the canister vent valve is held in the open position or held in the closed position. - View Dependent Claims (2, 3, 4, 5)
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6. A purge vapor system, comprising:
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a carbon canister; a canister vent valve in fluid communication with the carbon canister; an inlet port being part of the canister vent valve; a conduit, the conduit being connected to and in fluid communication with the carbon canister, and the conduit being connected to and in fluid communication with the inlet port of the canister vent valve; a sensing unit mounted to the inlet port; a pressure sensor being part of the sensing unit, the pressure sensor detecting pressure in the inlet port; a latching mechanism for changing the canister vent valve between an open position and a closed position, the latching mechanism being part of the canister vent valve; a valve connected to the latching mechanism, the valve being part of the canister vent valve; and a valve seat being part of the canister vent valve, the valve selectively in contact with the valve seat; wherein the latching mechanism is energized to change the valve between a closed position to an open position to control airflow from the carbon canister, and the latching mechanism holds the valve in the open position or the closed position when the latching mechanism is de-energized. - View Dependent Claims (7, 8, 9)
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10. A purge vapor system, comprising:
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a fuel tank; a fuel tank isolation valve in fluid communication with the fuel tank; a carbon canister in fluid communication with the fuel tank isolation valve, the fuel tank isolation valve controlling the flow of purge vapor from the fuel tank to the carbon canister, and the amount of vacuum pressure in the fuel tank; a canister vent valve in fluid communication with the carbon canister; an inlet port being part of the canister vent valve; an air filter, the canister vent valve in fluid communication with the air filter; and a conduit, the conduit being connected to and in fluid communication with the carbon canister, and the conduit being connected to and in fluid communication with the inlet port of the canister vent valve for providing fluid communication between the canister vent valve and the carbon canister; a sensing unit mounted to the inlet port; a pressure sensor being part of the sensing unit, the pressure sensor detecting pressure in the inlet port; a latching mechanism for changing the canister vent valve between an open position and a closed position, the latching mechanism being part of the canister vent valve; wherein the latching mechanism is energized as the latching mechanism changes the canister vent valve between the open position and the closed position, and the latching mechanism is de-energized as the canister vent valve is held in the open position or the closed position. - View Dependent Claims (11, 12)
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Specification