A fuel tank system is provided. In the main tank of the system, the end of a communication pipe is located above the end of a fuel introduction pipe inserted into the main tank. The end of a first pressure relief pipe at which a first cut-off valve is provided is located above the end of the communication pipe. In the auxiliary tank, the end of the communication pipe is located above the end of the fuel introduction pipe inserted into the auxiliary tank. In the auxiliary tank, the end of a second pressure relief pipe at which a second cut-off valve is provided is located above an end of a scavenging pipe.

A canister includes a fresh air introducing port for introducing a fresh air into the canister. The fresh air introducing port is opened in a space formed by at least a tank cover. The canister is connected to a drain pipe for draining a liquid in the canister to the outside of the canister. The drain pipe extends rearward at a height same as or higher than a lower end of the tank cover. The drain pipe merges with a supplied-fuel drain pipe and extends to a lower portion of a vehicle. The supplied-fuel drain pipe drains a fuel around a fuel supply port of a fuel tank.

A closed tank system includes: a fuel tank; a canister adapted to adsorb evaporative fuel generated in the fuel tank; a fill-up limiting valve provided inside the fuel tank so as to be communicated with the evaporative fuel discharge passage and adapted to operate to close the evaporative fuel discharge passage when a fuel level reaches a predetermined full tank liquid level; a shut-off valve adapted to operate to open or close the evaporative fuel discharge passage; a fuel remaining amount sensor adapted to detect a remaining amount of fuel; and a hardware processor that causes a control section to carry out control for allowing the shut-off valve to be opened or closed. The hardware processor causes the control section to inhibit the control for allowing the shut-off valve to be opened when an engine is in operation and the detected remaining amount of fuel exceeds a predetermined threshold.

A solenoid operated unit for detecting and bleeding undesired liquid present in desired liquid of different resistivity and specific gravity, the two liquids being immiscible with each other; with an electrical arrangement having a pair of parallel sensor pins and a pair of serial sensor pins. A dual function diaphragm ensures suitability for use with contaminated fluids. A pressure equalization outlet ensures smooth and speedy bleeding of undesired liquid. A modular mechanical sensor, when provided, provides redundancy such that desired fluid is not drained in situations of any electro-mechanical failure.

Fuel vapor emissions from a fuel tank directed to a canister containing adsorbent are minimized by an intermediate condenser and conduit configuration. Condensing and cooling fuel vapor emissions allows a reduction in canister capacity, where the canister can still meet and accommodate refueling and/or diurnal emissions control requirements. Pressurized and unpressurized fuel tanks for various vehicles, including vehicles with an internal combustion engine and hybrid electric vehicles, can be configured with the present fuel vapor recovery systems.

A charge air cooler for an internal combustion engine may include a heat exchanger having a plurality of fluid paths through which charge air to be cooled is flowable. The charge air cooler may also include a collector attached to the heat exchanger and communicating with the fluid paths. A lower region of the collector may be configured as a condensate receiving zone for receiving condensed charge air. At least one pipe body may be arranged in the collector and may delimit a fluid channel through which condensed and non-condensed charge air may be flowable. An opening may be formed in the at least one pipe body and may fluidically connect the fluid channel to the condensate receiving zone.

A fuel tank system constructed in accordance to one example of the present disclosure includes a saddle fuel tank, a control module, a first and second solenoid, and a first and second vent line. The saddle fuel tank can have a first lobe and a second lobe. The first vent line can have a first vent port located in the first lobe of the saddle fuel tank. The first solenoid is configured to open and close the first vent port. The second vent line can have a second vent port located in the second lobe of the saddle fuel tank. The second solenoid is configured to open and close the second vent port. The control module sends a signal to the first and second solenoids to close the first and second vents upon reaching a full fuel condition.

A fuel container, in particular for motor vehicles, comprising an aereation and de-aereation device for balancing the internal gas pressure during filling of the container with fuel and during consumption of the fuel during the operation of a working machine powered by the fuel. The aereation and de-aereation device has a separator device for separating liquid fuel from an aereation and de-aereation line. In order to permit the separator device to be emptied, if a fuel pump, which serves this purpose during normal operation, is not in operation, the separator device comprises a housing and a pipe nozzle which is connected to the housing either directly or via a pipeline and in which pressure fluctuations occur as a result of incoming and outgoing fuel, said fluctuations acting as a pump for emptying the separator device.

Methods and systems are provided for controlling fuel vapor canister purging operations in an evaporative emissions control system of a vehicle. In one example, responsive to an indication of a decrease in tire pressure greater than a threshold, the evaporative emissions control system may be sealed and canister purging operations may be suspended until the tire pressure rises to another threshold. In this way, during conditions wherein tire pressure is indicated to decrease to a threshold, sealing the evaporative emissions control system and suspending canister purging operations may serve to prevent ingestion of water into the fuel vapor canister, thus prolonging the useful life of the fuel vapor canister and reducing the potential for evaporative emissions.

Methods and systems are provided for controlling fuel vapor canister purging operations in an evaporative emissions control system of a vehicle. In one example, responsive to an indication of a decrease in tire pressure greater than a threshold, the evaporative emissions control system may be sealed and canister purging operations may be suspended until the tire pressure rises to another threshold. In this way, during conditions wherein tire pressure is indicated to decrease to a threshold, sealing the evaporative emissions control system and suspending canister purging operations may serve to prevent ingestion of water into the fuel vapor canister, thus prolonging the useful life of the fuel vapor canister and reducing the potential for evaporative emissions.