Abstract: If it is determined that an internal temperature Tc of a canister that is formed with a heat transfer surface for guiding fuel that flows through a fuel tank during actuation of a fuel pump is lower than a specified temperature To (step S1), the ECU determines whether a driving voltage of the fuel pump is a high driving voltage (step S2). If it is determined that the driving voltage of the fuel pump is not the high driving voltage, an FPC is controlled, and the driving voltage of the fuel pump is increased (step S3, S5). Accordingly, a current that flows through the fuel pump is increased, so as to heat discharged fuel.

Abstract: In a vehicle that runs by drive power of a motor in addition to that of an engine, a device for treating evaporated fuel is provided that may heat a canister and improve desorption efficiency even in a state in which there is little exhaust heat from the engine. A vehicle is provided with a first battery and a second battery. A canister is disposed in front of the first battery and below the second battery. Because the canister is disposed near to the batteries, heat is transferred from the batteries to the canister and an adsorbing agent in the canister is heated.

Abstract: The evaporative fuel treatment apparatus includes: a fuel tank configured to store fuel for an engine; a sub-tank that communicates with the fuel tank; an adsorber provided inside the sub-tank and configured to adsorb evaporative fuel generated inside at least one of the fuel tank and the sub-tank; a purge mechanism configured to carry out purging for introducing evaporative fuel from the adsorber into the engine; and an in-tank fuel adjustment unit configured to adjust an amount of fuel inside the sub-tank in response to an operating state of the engine, the in-tank fuel adjustment unit including a fuel introduction pump configured to be able to introduce fuel from an outside of the sub-tank to an inside of the sub-tank, the fuel introduction pump being formed of a jet pump configured to be driven by at least part of fuel discharged from the fuel pump.

Abstract: An evaporative fuel treatment apparatus includes a fuel tank, a fuel pump, an adsorber, a purge mechanism, a supercharger and an electronic control unit. The fuel pump is configured to draw fuel that is supplied from the fuel tank to the internal combustion engine. The adsorber is provided inside the fuel tank and configured to adsorb evaporative fuel developed inside the fuel tank. The purge mechanism is configured to carry out purging for introducing fuel, desorbed from the adsorber, into an intake pipe of the internal combustion engine. The supercharger is configured to feed air into the intake pipe. The electronic control unit is configured to increase an amount of heat that is transferred from the fuel pump to the adsorber on the condition that an intake negative pressure in the intake pipe is higher than a predetermined threshold.

Abstract: A fuel tank system in which a solenoid valve on piping that communicates between a fuel tank and a canister may be reduced in size. A valve member (a diaphragm valve) is disposed in vent piping that communicates between the fuel tank and the canister. A second bypass channel is provided between a back pressure chamber of the diaphragm valve and the canister side of the vent piping. The solenoid valve is disposed in the second bypass channel.

Abstract: A fuel tank system is obtained, in which internal pressure does not readily increase and in which there is no need to secure a space for deformation at the periphery of the fuel tank. A vapor pipe is connected to a fuel tank, and an atmosphere release pipe is connected through a canister. An electromagnetic valve is attached to the vapor pipe, communicating a gas layer at an upper portion inside the fuel tank with the external atmosphere by opening the electromagnetic valve. A thinned deformation location capable of indentation-deformation towards the inside is provided at an upper wall portion of the fuel tank. A negative pressure pump is provided to reduce the pressure inside the fuel tank, causing the deformation location to indentation-deform towards the inside. The fuel tank is sealed by closing the electromagnetic valve in a state in which the deformation location is indentation-deformed towards the inside.

Abstract: A solenoid switching valve is provided at a low concentration gas pipe that sends gas from a second separating film unit to a canister. A reflux pipe, that is branched-off from the low concentration gas pipe by the solenoid switching valve, merges with a medium concentration gas pipe that is from the second separating film unit, and further runs via a circulating pipe, and reaches a merge portion with a purge pipe from the canister. By switching the solenoid switching valve to the merge portion side and driving a purge pump that is provided at an exhaust pipe between the merge portion and a first separating film unit, gas, whose concentration has risen within the low concentration gas pipe, is sent to the first separating film unit, and is separated into high concentration gas HG and low concentration gas LG.

Abstract: A structure for a fuel filling section of a fuel tank is obtained, in which valve opening pressure of a negative pressure valve, that opens a fuel filling port when a fuel tank interior is negative pressure, can be set independently of a valve opening pressure of an opening/closing valve that opens the fuel filling port due to insertion of a fuel filling gun. A positive pressure valve (50), that opens when the fuel tank interior becomes positive pressure, and a flap valve (70), that opens by being pushed by the fuel filling gun, are provided within a filler pipe (24). Further, a negative pressure valve (60), that opens when the fuel tank interior becomes negative pressure, is provided separately from the flap valve (70). A valve opening pressure of the flap valve (70) can be set without considering a valve opening operation when a fuel tank (10) interior becomes negative pressure.

Abstract: In a vehicle that runs by drive power of a motor in addition to that of an engine, a device for treating evaporated fuel is provided that may heat a canister and improve desorption efficiency even in a state in which there is little exhaust heat from the engine. A vehicle is provided with a first battery and a second battery. A canister is disposed in front of the first battery and below the second battery. Because the canister is disposed near to the batteries, heat is transferred from the batteries to the canister and an adsorbing agent in the canister is heated.

Abstract: A solenoid switching valve is provided at a low concentration gas pipe that sends gas from a second separating film unit to a canister. A reflux pipe, that is branched-off from the low concentration gas pipe by the solenoid switching valve, merges with a medium concentration gas pipe that is from the second separating film unit, and further runs via a circulating pipe, and reaches a merge portion with a purge pipe from the canister. By switching the solenoid switching valve to the merge portion side and driving a purge pump that is provided at an exhaust pipe between the merge portion and a first separating film unit, gas, whose concentration has risen within the low concentration gas pipe, is sent to the first separating film unit, and is separated into high concentration gas HG and low concentration gas LG.

Abstract: A structure for a fuel filling section of a fuel tank is obtained, in which valve opening pressure of a negative pressure valve, that opens a fuel filling port when a fuel tank interior is negative pressure, can be set independently of a valve opening pressure of an opening/closing valve that opens the fuel filling port due to insertion of a fuel filling gun. A positive pressure valve (50), that opens when the fuel tank interior becomes positive pressure, and a flap valve (70), that opens by being pushed by the fuel filling gun, are provided within a filler pipe (24). Further, a negative pressure valve (60), that opens when the fuel tank interior becomes negative pressure, is provided separately from the flap valve (70). A valve opening pressure of the flap valve (70) can be set without considering a valve opening operation when a fuel tank (10) interior becomes negative pressure.