Fuel vapor processors
AssigneeAisan Kogyo Kabushiki Kaisha
InventorKatsuhiko MAKINO
Life of this patent
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Abstract
A fuel vapor processor has a fuel tank configured to reserve fuel, a canister containing adsorbent capable of adsorbing fuel vapor vaporized in the fuel tank, a separator receiving a fuel vapor containing gas from the fuel tank, a regulator controlling the volume of the fuel vapor containing gas supplied to the separator, and a suction unit capable of removing the fuel vapor from the canister. The separator selectively passes the fuel vapor therethrough in order to divide the fuel vapor containing gas into a first gas mainly containing the fuel vapor and a second gas having a fuel vapor density lower than the first gas. The suction unit suctions the first gas from the separator in order to return the first gas into the fuel tank. The second gas is introduced into the canister or is released into the atmosphere.
Claims13
A fuel vapor processor comprising:
- a fuel tank configured to reserve fuel;
- a canister containing adsorbent capable of adsorbing fuel vapor vaporized in the fuel tank;
- a separator receiving a fuel vapor containing gas from the fuel tank and selectively passing the fuel vapor therethrough in order to divide the fuel vapor containing gas into a first gas mainly containing the fuel vapor and a second gas having a fuel vapor density lower than the first gas;
- a regulator controlling the volume of the fuel vapor containing gas supplied to the separator;
- and
- a suction unit configured to remove the fuel vapor from the canister and to suction the first gas from the separator in order to return the first gas into the fuel tank;
- wherein the second gas is introduced into the canister or is released into the atmosphere.
A fuel vapor processor for a gas vehicle having an engine, comprising:
- a fuel tank configured to reserve fuel;
- a canister containing adsorbent capable of adsorbing fuel vapor vaporized in the fuel tank;
- a separator receiving a fuel vapor containing gas from the fuel tank and selectively passing the fuel vapor therethrough in order to divide the fuel vapor containing gas into a first gas mainly containing the fuel vapor and a second gas having a fuel vapor density lower than the first gas;
- a sensor detecting internal pressure of the fuel tank;
- a regulator controlling the volume of the fuel vapor containing gas supplied to the separator depending on the internal pressure of the fuel tank in order to stabilize the fuel vapor density of the second gas;
- a suction unit capable of removing the fuel vapor from the canister and suctioning the first gas from the separator in order to return the first gas into the fuel tank;
- and
- an air intake pipe for supplying air to the engine;
- wherein the second gas is introduced into the air intake pipe.
A fuel vapor processor for a gas vehicle comprising:
- a fuel tank configured to reserve fuel;
- a separator communicated with the fuel tank and configured to separate fuel vapor vaporized in the fuel tank from air;
- and
- a regulator configured to control flow rate from the fuel tank into the separator.
Dependencies are inferred from the claim text.