Abstract: An arrangement for a four-cycle, direct injected engine for an outboard motor is disclosed. The engine includes a fuel injection system that includes a fuel pump, a plurality of fuel injectors, a fuel pump and a vapor separator. The vapor separator is communication with the fuel pump and at least one fuel return line. The vapor separator includes a vent for removing vapors from the fuel. The vapor separator also includes a canister positioned within the vapor separator below the vent. The canister including hydrocarbon absorption media.

Abstract: A fuel vapor treatment system for an automotive vehicle on which an internal combustion engine is mounted. The fuel vapor treatment system includes a canister connected to a fuel tank and containing a fuel vapor adsorbing material which generates endothermic energy during desorption of fuel vapor. A membrane separation module is provided to be connected to the canister and including a separation membrane for separating a mixture gas purged from the canister into an air-rich component and a fuel vapor-rich component. Additionally, a condenser is provided to be connected to the membrane separation module to be supplied with the fuel vapor-rich component from the membrane separation module. The condenser is housed in the canister and adapted to cool and liquefy fuel vapor in the fuel vapor-rich component to obtain liquefied fuel by the endothermic energy generated in the canister, the liquefied fuel being recovered.

Abstract: A vapor purge system that permits evaluation of the system with a minimum number of hoses and connections, and without the use of additional components. The system includes a valve having first and second ports in communication with a first chamber and a third port in communication with a second chamber, the first and second chambers being defined by a metering member that divides an internal volume of a housing. A diagnostic member having first and second operative states is in communication with the first chamber through the second port. The first operative state prohibits communication with an exterior of the valve, and the second operative state permits communication with the exterior. The diagnostic member provides the ability to reliably measure flow through the valve. The system can use two (2) hoses including three (3) connections from a vapor supply port connected with the first port to the third port operatively connected with a manifold.

Abstract: An abnormality detecting apparatus for a fuel evaporative emission control system which ensures enhanced reliability includes a canister (9) disposed in a purge passage, a purge control valve (10), a control means (20) for controlling opening/closing of the purge control valve (10) in dependence on engine operation states, a means (18) for detecting an intake pressure (Pb), a means for detecting at least one of an atmospheric pressure (PA), an outside air temperature (TG), an intake air temperature (TA) and a fuel temperature (TT), a means (19) for detecting a fuel tank pressure (Pt), a means (20) for determining validity of abnormality decision enabling conditions in the case where concentration of fuel gas is lower than a reference value for comparison, a means (20) for regulating a purge rate in dependence on an intake pressure (Pb) when the abnormality decision enabling conditions are valid, a means (20) for detecting occurrence of abnormality in the fuel evaporative emission control system on the basis o

Abstract: An engine controller system for a direct injection spark ignited internal combustion engine that is capable of operating a stratified mode where fuel is injected during a compression stroke of the engine and a homogeneous mode where fuels is injected during an intake stroke of the engine. The engine controller monitors adjusts the flow rate of the evaporated fuel vapors as a function of the catalyst temperature and the fuel level in the evaporated fuel vapors. The engine controller determines the fuel level in the evaporated fuel vapors as a function of the exhaust gas oxygen senor output.

Abstract: An assembly 10 which includes primary and secondary hydrocarbon material reception and storage devices 22, 24 in a cascaded and communicative relationship. Particularly, the device 24 receives and stores hydrocarbon emissions 20 which emanate from the device 22. Device 24 further includes a filter 50 through which purging air is communicated to the devices 22, 24. Further, device 24 includes a condensation removal portion 52 which allows condensation 92 to be vented from the device 24 and a selectively closeable vent portion 54 which allows the device 24 and the assembly 10 to be periodically tested.

Abstract: A volume compensator assembly for a vapor canister includes a partition adapted to be disposed in an interior chamber of the vapor canister and having a single opening extending therethrough. The volume compensator assembly also includes a grid pattern disposed on the partition about the opening to guide airflow to the opening. The volume compensator assembly further includes a spring connected to the partition and contacting the vapor canister to move the partition for compensation of a volume of a bed of vapor adsorbing material in the vapor canister.

Abstract: A flow control valve with a reduced number of parts and with few restrictions on installation space is provided. A back pressure chamber of a diaphragm-type valve body communicates with a communication port through a vent hole formed in a case of the flow control valve. An air filter is integrated with the flow control valve.

Abstract: A multilayered fuel tank (10) for a motor vehicle is disclosed having a fuel tank body (32) for holding liquid and vapor fuel comprising a bottom wall (46), side walls (45) and a top wall and a plurality of fuel tank components (35) located on the top wall and seams (37) located on the side walls. A tank cover (36) is connected to the fuel tank body to define a vapor collection chamber (34). The tank cover encapsulates the top wall and the fuel tank components and seams thereby trapping any fuel vapors that may escape from the tank body, the fuel tank components and the seams. Also disclosed is a method of making the multilayered fuel tank and a method of preventing fuel vapors from escaping from a fuel tank to the environment.

Abstract: Disclosed is a method for sharply reducing diurnal breathing loss emissions from automotive evaporative emissions control systems by providing multiple layers, or stages, of adsorbents. On the fuel source-side of an emissions control system canister, high working capacity carbons are preferred in a first canister (adsorb) region. In subsequent canister region(s) on the vent-side, the preferred adsorbent should exhibit a flat or flattened adsorption isotherm on a volumetric basis and relatively lower capacity for high concentration vapors as compared with the fuel source-side adsorbent. Multiple approaches are described for attaining the preferred properties for the vent-side canister region. One approach is to use a filler and/or voidages as a volumetric diluent for flattening an adsorption isotherm. Another approach is to employ an adsorbent with the desired adsorption isotherm properties and to process it into an appropriate shape or form without necessarily requiring any special provision for dilution.

Abstract: The evaporative emission treatment device comprises a monolith concentrically disposed within a shell, and having one or more sealing agents concentrically disposed about the monolith and in between the monolith and housing. The shell comprises a first shell portion having an inlet portion at one end and a connection element disposed at the opposing end, and a second shell portion having an outlet portion at one end and a connection element disposed at the opposing end. The shell can also include structural features to prevent fluid leakage, enhance fluid flow, enable attachment to other evaporative emission system components, enable mounting to a vehicle, and internally seal the monolith and sealing agents.

Abstract: A valve assembly for a vapor canister includes a partition adapted to be disposed in an interior chamber of the vapor canister and having at least one opening extending therethrough. The valve assembly also includes a valve connected to the partition and covering the at least one opening and being movable to provide variable flow of fluid therethrough.

Abstract: A valve member includes a first communication passage for allowing a first passage to communicate with a first pressure chamber. When a pressure-receiving member contacts the valve member, a communication between the first communication passage and the first pressure chamber is shut. Magnetic force of a permanent magnet urges a shaft toward the pressure-receiving member. While a coil is not energized, when pressure inside a second passage rises, the pressure-receiving member leaves the valve member due to pressure difference between pressure inside the first pressure chamber and pressure inside a second pressure chamber, so that the first passage communicates with the second passage through the first communication passage. When the coil is energized, magnetic repelling force is introduced between a stator core and the permanent magnet, so that the pressure-receiving member and the shaft depart from the valve member to allow the first passage to communicate with the second passage.

Abstract: In order to aim at shortening the time of refueling by maintaining the function of prevention of discharge of vapor, similar to that of a conventional canister in the case of other than refueling during resting of an engine while the flow resistance in the canister becomes smaller during refueling, there is provided a canister in which a plate is vertically arranged in a chamber charged therein with absorbent in the canister, and filter support pins are projected from opposite surfaces of the plate while filters are arranged at the tip end faces of the filter support pins, and in which a plurality of constriction passages are formed being arranged in a horizontal direction only in the upper part of the plate.

Abstract: A tubular resin contains small animal repelling chemical. And canister structure installed in an automobile comprises the above tubular resin on the inner wall of an air inlet port portion of a drain pipe. The canister structure absorbs evaporated fuel from a fuel tank by a absorbent in a main body of a canister and then supplies desorbed fuel from the adsorbent together with the air sucked from the drain pipe to an engine side. The tubular resin prevents entering of a small animal into the drain pipe and also building of its nest.

Abstract: A method of managing pressure in a fuel system supplying fuel to an internal combustion engine. The method includes providing a fuel tank including a headspace, connecting to the headspace an intake manifold of the internal combustion engine, a fuel vapor collection canister, a purge valve, and a fuel vapor pressure management apparatus, detecting the vacuum that naturally forms in the headspace, and relieving excess pressure that forms in the headspace. The fuel vapor management apparatus includes a housing defining an interior chamber, excludes a diaphragm partitioning the interior chamber, and excludes an electromechanical actuator.

Abstract: An apparatus and method for adjusting a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The apparatus includes a housing defining an interior chamber, a pressure operable device, a resilient element, and an adjuster. The pressure operable device separates the interior chamber into first and second portions, and includes a poppet that is movable along an axis and a seal that is adapted to cooperatively engage the poppet. The resilient element applies a force that biases together the poppet and the seal.

Abstract: A canister module includes a canister housing in which a plurality of cylindrical adsorbent chambers filled with adsorbent are provided side by side with a gap therebetween. Canister-peripheral parts are connected to the adsorbent chambers through communicating openings provided on the canister housing and are in the gap.

Abstract: An evaporative emission control system for an engine (1) includes a fuel tank (2), a pipe (4, 7) connecting the fuel tank and an engine intake passage, a canister (3) which adsorbs fuel evaporating gas vaporized in the fuel tank, a purge valve (8) provided between the intake passage and the canister, and a sensor (9) which is provided between the purge valve and the fuel tank, and detects absolute pressure in the pipe. A controller (15) sets the detected pressure before engine startup as an atmospheric pressure.

Abstract: A method of leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing a vacuum detection component having a microcontroller operatively coupled to actuators and sensors, receiving at least one sensor signal from the sensors to the vacuum detection component, processing the at least one sensor signal in the microcontroller, sending output to an engine management system based on the at least one processed sensor signal, processing the output in the engine management system operatively coupled to a control valve, transmitting input from the engine management system to the vacuum detection component based on the processed output, and sending actuator signals from the microcontroller to the actuators.

Abstract: A fuel vapor treatment canister is described. The canister includes a casing having first and second end walls between which an inside space is formed. The first end wall has a first opening in communication with a fuel tank, and a second opening in communication with an air intake passage of an engine. The second end wall has a third opening in communication with the atmosphere. The inside space includes first and second chambers. The first chamber is located closer to the first end wall than the second chamber. A first fuel vapor adsorbing material is disposed in the first chamber. A second fuel vapor adsorbing material and a heat-accumulative material are disposed in the second chamber. The heat-accumulative material is larger in specific heat than the second fuel vapor adsorbing material.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: The present invention is accomplished by a canister structure for an internal combustion engine that includes a container having a gas passage therein through which gas containing evaporative fuel flows from a first end to a second end, a purge portion disposed on the container and connected to the first end through which vacuum pressure is applied into the gas passage, a charge portion disposed on the container and connected to the first end through which the gas is introduced into the gas passage, a drain portion disposed on the container and connected to the second end through which the gas passage is made open to the atmosphere, and an adsorbent material, disposed in the gas passage, to temporarily adsorb the evaporative fuel, whose specific heat on the side of the second end is made higher relative to that on the side of the first end.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: A fuel vapor handling apparatus supplies a purging air to a canister by using a purge pump and purges fuel desorbed from the canister into an intake pipe. A controller intermittently operates the purge so that the canister internal temperature recovers from a reduced level caused by the latent heat of vaporization of fuel during an operating period of the purge pump. Therefore, desorption of fuel from the canister during an operating period is facilitated. Since the actual operating time of the purge pump is reduced, the life of a motor that is a power unit of the purge pump becomes longer.

Abstract: A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: A filter blanket, for placement on an underside of a vehicle hood, and for use in recycling residual engine vapors from within an engine's intake system, includes a filter element and a cover. The filter element includes a plurality of wicking fibers. Each of the wicking fibers has an internal cavity formed therein, and a longitudinally extending slot formed therein extending from the internal cavity to the outer fiber surface. The filter blanket also includes a hydrocarbon-absorbing material disposed within the internal cavities of the fibers. The filter blanket may be used in conjunction with a routing duct, as part of a fuel vapor recycling system.

Abstract: A pressure operable device for an integrated pressure management apparatus. The pressure operable device includes a poppet moving between a first configuration permitting fluid communication between first and second ports of the integrated pressure management apparatus, and a second configuration preventing fluid communication between the first and second ports. A spring biases the poppet toward the second configuration, and a diaphragm operably engages the poppet to move the poppet toward the first configuration.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: A fuel adsorption layer formed in a canister is partitioned into an upper adsorption layer and a lower adsorption layer by a partition plate in which a heater is embedded. The relation between a heating value of the heater and thickness X of the upper and lower adsorption layers is set so that the temperature of a part closest to the heater heating face of the fuel adsorption layer is lower than a fire point of the fuel, and the temperature of a part farthest from the heater heating face is higher than the boiling point of the fuel. With the configuration, by heating the fuel adsorption layer by the heater, the desorption performance of activated carbon is improved, and almost all of the fuel vapors adsorbed can be desorbed. As a result, the fuel vapors do not remain in the canister, so that all of the fuel vapors which flow in at the time of adsorption can be adsorbed with reliability.

Abstract: A gasoline vapor storage canister is employed to temporarily store hydrocarbon vapors vented from the gas tank in an automotive vehicle using an engine or fuel cell motive means which is fuelled at least in part from an on-board-the-vehicle, partial oxidation (POx) reactor for converting gasoline to a hydrogen-containing POx fuel. During cold start situations, gasoline vapor is purged from the storage canister to supply a stream of combustible fuel/air mixture to the POx reactor for ignition and heat up of the catalytic reactor to its operating temperature.

Abstract: An evaporative emission control apparatus for a motor vehicle includes a fuel tank having a tank shell to store fuel therein, a canister disposed completely within the fuel tank to adsorb and temporarily store evaporative fuel generated in the fuel tank, and a bracket that is secured to the fuel tank to support the canister apart from the tank shell. The outer surface of the canister is set apart from the inner surface of the tank shell, so that the canister is less influenced by the environment temperature around the fuel tank, and so that the adsorption of the evaporative fuel is kept stable.

Abstract: A fuel tank having an inlet and an outlet is connected to a separate pressure vessel by means of a pump. Fuel vapors are pumped out of the tank and into the pressure vessel while the tank is being filled via the inlet, so that fuel vapors cannot escape during filling. After filling, the inlet is closed and the pressure in the tank is increased to about 4 bar by means of a pressure regulator in a line connecting the pressure vessel to the fuel tank. The pump is then switched off and the fuel can be delivered to the engine via the outlet under the increased fuel pressure in the tank, the pressure being reduced to fuel system pressure by a pressure regulator in the outlet line.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head space, a purge valve, and all associated.

Abstract: In a canister for a vehicle, in order to significantly reduce a leaking amount of evaporated fuel from an atmospheric port of the canister, an introduction port for evaporated fuel and an atmospheric air port for the evaporated fuel are provided in a casing, and an adsorbing material layer communicates between the introduction port and the atmospheric air port. A chamber is provided between the atmospheric air port and a surface on a side of the atmospheric air port in the adsorbing material layer. A leakage preventing adsorbing material layer is arranged within the chamber so that a space layer is formed between the leakage preventing adsorbing material layer and the surface on the atmospheric air port side in the adsorbing material layer and another space layer is formed between the leakage preventing adsorbing material layer and the atmospheric air port.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An evaporated fuel treatment apparatus is provided for reducing a refilling time, ensuring satisfactory adsorption/desorption performance for an evaporated fuel, and reducing the manufacturing cost through a simplified structure. The evaporated fuel treatment apparatus comprises a casing having formed therein a first chamber in communication with the fuel tank, a second chamber in communication with the first chamber, and a third chamber in communication with the second chamber and the atmosphere. Active carbons are contained in the first chamber and second chamber for adsorbing fuel components in an evaporated fuel introduced from the fuel tank. An adsorbent is contained in the third sub-chamber for adsorbing fuel components in the evaporated fuel introduced from the second chamber. The adsorbent has an air-flow resistance which is set smaller than that of the active carbons.

Abstract: A method of determining a purge fuel mass flow rate from a fuel vapor control system to an internal combustion engine having a compressor for delivering purge gas from the fuel vapor control system to the engine. The temperature rise of the purge gas passing through the compressor is determined. Then, a specific heat ratio of the purge gas is determined as the function of the temperature rise. The purge fuel mass flow rate is determined as a function of specific heat ratio of the purge gas.

Abstract: A fuel tank is divided into a fuel chamber and an air chamber by a bladder diaphragm. Under a condition that both the amount of intake air Ga and the engine revolution speed NE of an internal combustion engine are kept at constant values, a vapor concentration correction factor FGPG during a fuel injection duration TAU is calculated based on a change in the air-fuel ratio detected when gas is purged from the air chamber toward an intake passage of the engine. Based on the vapor concentration correction factor FGPG, it is determined whether there is fuel leakage from the fuel chamber to the air chamber. With this determination technique, a fluctuation in the air-fuel ratio is not caused by a situation where the engine is in a transitional state, during fuel leakage detection, so that the vapor concentration correction factor FGPG assumes a proper value corresponding to the vapor concentration in the air chamber.

Abstract: A liquid fuel trap device for a vehicle fuel tank, comprising a housing formed with a confined space with at least one inlet port each connectable to a corresponding fuel valve, an outlet port connectable to a fuel vapor recovery system, and a fuel liquid discharge valve adapted for discharging liquid fuel from the space into the tank. The housing further comprises a connecting arrangement for attaching the device on an inner surface of an upper wall of the fuel tank.

Abstract: An invention relates to an intake device for an internal combustion engine, to which at least combustion air and an additional fluid can be supplied via an air inlet line (1). The air inlet line (1) has an opening, in particular a hole (9), through which a guide tube (11) projects into the air inlet line (1).

Abstract: An evaporated fuel discharge preventing apparatus, in order to sufficiently adsorb and collect an evaporated fuel generated in an intake air passage at a time when an engine stops, and to prevent an engine performance from being reduced by reducing an intake air resistance in an evaporated fuel adsorbing portion at a time when the engine is driven, has an adsorbing device arranged in a passage between an evaporated fuel generating portion and an air cleaner element, and, the adsorbing device is formed by an intake air passage portion laterally arranged within the device penetratingly and communicated with the passage at both ends, an adsorbent layer arranged on an outer periphery of the intake air passage portion, and a member covering an outer surface in a non-ventilating state except a side of the intake air passage portion in the adsorbent layer, and an inner diameter of the intake air passage portion of the adsorbing device is set to be substantially equal to or more than an inner diameter of the intake a

Abstract: In order to make a fuel in a vapor phase from a fuel tank to be easily liquefied in a liquid trap, reduce an amount of a gasoline vapor entering from the liquid trap to a diffusion of a canister and extend a service life of an activated carbon, in accordance with a canister for an evaporated fuel treatment apparatus, a fuel in a vapor phase from a fuel tank (24) enters into a liquid trap (21A) from an evaporated fuel passage (23) via a tank port (13A). Since an inner diameter of a canister communication port (22A) is small, an invasion of a gasoline vapor from the liquid trap (21A) to a first diffusion (12) is restricted, so that a liquefaction in the liquid trap (21A) is promoted. When the fuel tank (24) is cooled and an internal pressure of the tank becomes a negative pressure, a fuel in a liquid phase in the liquid trap (21A) flows backward so as to prevent a lot of fuel in a liquid phase from being collected within the liquid trap (21A).

Abstract: A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head space, a purge valve, and all associated.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head space, a purge valve, and all associated.

Abstract: A vapor evacuation system that is used to intermittently remove hydrocarbon vapors from vehicle components to an available vapor storage canister using an electrically controlled small flow rate vapor-handling pump. The vapor-handling pump is intermittently turned on and off as a function of ambient temperature or inlet manifold temperature and as a function of time since last engine-on operation.