A multiple fuel tank purge system and method includes providing a pair of fuel tanks, including a main fuel tank for containing impure fuel and a separate, auxiliary fuel tank that contains commercial canned fuel. The engine runs on the impure fuel from the main fuel tank while the engine is in normal use, and then employs a shutdown cycle that switches to the commercial canned fuel from the auxiliary fuel tank for some pre-set time period. This arrangement allows the engine to be purged of the impure fuel (by burning the impure fuel during the shutdown cycle) and replaced by the commercial pre-mixed fuel before the engine is finally shut down. The system may further include a novel fuel cap with a fuel line, a tank within a tank fuel container, and/or an electronically actuated shutdown cycle mechanism.

An apparatus is provided for purging fuel evaporation gas in a fuel system. The apparatus increases an amount of fuel evaporation gas that is desorbed from a canister during driving of an engine, and thus prevents fuel evaporation gas adsorbed to the canister from being discharged to the atmosphere.

A method for recommending fuel filling stations based on water in fuel content is disclosed. In one example, a data structure is generated to house data from a plurality of fuel filling stations. The data structure may include data that is indicative of water in fuel. A recommendation for refilling a fuel tank may be provided according to data that is held in the data structure.

An apparatus for preventing fuel overflow of a vehicle fuel tank includes: a valve unit including a valve body, a housing configured to cover a lower part of the valve body, a float mounted on the valve body and configured to slide up and down, a vapor line opened and closed according to a movement of the float, and a fuel inlet hole; a cover unit coupled to and enveloping the housing, the cover unit having a plurality of windows along an outer circumferential surface at a height corresponding to the fuel inlet hole, thereby being formed to allow the fuel to be introduced into the valve unit; and a shielding unit mounted on the cover unit to shield open windows, the shielding unit able to rotate along a turning direction of the vehicle to form an inflow path of the fuel flowing into the fuel inlet hole.

An air filter device includes an air filter and a filter case having a filter housing for housing the air filter. The filter case has a pipe part enclosing an outer circumference of a second end of a filler pipe. The second end of the filler pipe defines a fuel filler opening and is opposite to a first end of the filler pipe connected to a fuel tank of a vehicle. A distance between the pipe part and the fuel filler opening is less than a distance between the filter housing and the fuel filler opening. The pipe part is configured to be inserted into a fixed member fixed to a vehicle body. The pipe part has a flange that extends radially outward from the pipe part and is spaced apart from the filter housing in an axial direction.

A fuel tank venting system for a hybrid vehicle includes a first flow path configured to deliver fuel vaporized from a fuel tank to a canister, a second flow path configured to deliver air used for cooling a high voltage battery to the canister, a first three-way valve disposed on the second flow path and configured to control opening and closing of a first discharge port for releasing pressure of the fuel tank, a second three-way valve disposed on the second flow path and configured to control opening and closing of a second discharge port for flowing the air used for cooling the high voltage battery into the canister or discharging the air used for cooling the high voltage battery outside the vehicle, and a controller configured to control the first three-way valve and the second three-way valve.

The invention relates to a retaining apparatus (1) having a filter element (3) in a fluid line (2) which can be flowed through in a flow direction (V) by a fluid (F) comprising a foreign fluid (X), having a volume flow control apparatus (5) by way of which the volume flow (S) through the fluid line (2) can be controlled, having a sensor device (6) by way of which the fraction of foreign fluid (X) in the fluid (F) can be determined, and having a control device (7) by way of which the volume flow (S) can be controlled by way of the volume flow control apparatus (5) in a manner dependent on the fraction of foreign fluid (X) in the fluid (F) as determined by way of the sensor device (6). The invention furthermore relates to a fuel tank filling installation having said retaining apparatus, and to a method for retaining foreign fluid from a fluid.

An apparatus for testing a fuel cap includes a gas manifold, a fuel cap connector, a base, and a removable cover. The gas manifold is configured to provide a bidirectional flow path through the fuel cap. The fuel cap connector is integrated with or coupled to the gas manifold, and the fuel cap connector is configured to connect the fuel cap to the gas manifold. The base is configured to support the gas manifold and provide at least a first gas input to the gas manifold and through the fuel cap via the bidirectional flow path. The removable cover is configured to be removably connected to the gas manifold and provide at least a second gas input to the gas manifold and through the fuel cap via the bidirectional flow path.

Intake arrangement for an internal combustion engine for the intake of a liquid medium from a container, having a strainer, via which liquid medium can be taken in from the container, and having at least one suction pipe which opens with a first end into the strainer and via which the liquid medium can be delivered towards a suction pump, which interacts with the respective suction pipe. The suction pipe is mounted at a second end that faces away from the strainer such that it can be pivoted about an axis such that the suction pipe follows a movement of the liquid within the container.

A fuel system, a vehicle, and a method of controlling an evaporative emissions system for the vehicle are provided. The fuel system has a fuel tank having a fuel fill port with a closure member. An evaporative emissions canister has a first port fluidly coupled to the fuel tank to receive vapor therefrom and a second port, with the canister positioned between an air intake for an engine and a vent to atmosphere. A filter or a second canister is supported by a bracket for movement between first and second positions, with the filter fluidly coupling the second port of the canister to the vent in the first position, and the filter spaced apart from and decoupled from the second port of the canister in the second position. The second port of the canister is in direct fluid communication with atmosphere when the filter is in the second position.