Abstract: A leakage detector includes a pressure sensor for detecting the pressure in a detecting target area of the fuel vapor treatment system and a controller. The controller measures the pressure in the detecting target area at a certain point in time. The controller then determines whether the measured pressure satisfies a condition for leakage detection by a vapor pressure device. When the controller determines that the condition is satisfied, the controller selects the vapor pressure device. When the controller determines that the condition is not satisfied, the controller predicts the change in vapor pressure at a subsequent temperature based on a saturated vapor pressure characteristic of the fuel. If it is determined the pressure in the detecting target will satisfy a predetermined condition, the controller selects a pressure application device. If it is determined that the predetermined condition will be satisfied, the controller selects the vapor pressure device.

Abstract: Methods and systems for purging fuel vapors from an evaporative emissions system of a vehicle are described. The methods and systems may include opening one or more bypass valves of carbon filled canisters to supply air to a low pressure port of a venturi pump. The bypass valves may be opened when fuel vapors are being moved from a fuel tank to an engine while the engine operates.

Abstract: A fuel vapor emissions control device includes: —an absorbent filter; —a purge circuit including: a pump equipped with an intake and with a delivery outlet; an upstream duct; and a downstream duct. The pump includes an intake chamber into which the intake opens. The upstream duct is connected by one of its ends to the absorbent filter and via the other of its ends opens into the intake chamber. The downstream duct includes a double tubular wall defining two separate conduits.

Abstract: Methods and systems are provided for executing a leak test diagnostic of a variable volume fuel tank. In one example, a method includes diagnosing a presence of an absence of a leak in a bellows via actuating a bellows valve fluidly coupling the bellows to a vapor canister during a key-off event.

Abstract: A condensate discharge system for an exhaust gas measuring device. The condensate discharge system includes a condensate separator in which a positive pressure prevails, an outflow line in which atmospheric pressure prevails, a connecting line, and an intermediate reservoir in which the positive pressure prevails. The intermediate reservoir is arranged between the condensate separator and the outflow line and is directly connected to the condensate separator via the connecting line. The intermediate reservoir includes a float valve via which a condensate is dischargeable into the outflow line.

Abstract: Methods and systems for diagnosing operational status of a carbon filled canister heater are described. The methods and systems may include activating an evaporative emissions system heater, a pump, and a canister purge valve to determine if long chain hydrocarbons are released from a carbon filled canister. Release of long chain hydrocarbons from the carbon filled canister may be indicative of desired operation of a carbon filled canister heater.

Abstract: A heat exchanger includes a heat exchanging portion, a reservoir that performs gas-liquid separation on a gas-liquid two-phase refrigerant that flows out from the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and stores the liquid-phase refrigerant, and an inflow passage that allows the gas-liquid two-phase refrigerant flowing out from the heat exchanging portion to flow into the reservoir. The inflow passage is connected so as to be in communication with an inlet port of the reservoir which is disposed above a liquid surface of the liquid-phase refrigerant stored in the reservoir.

Abstract: An isolation valve includes: a housing including a first passage and a second passage; a main valve assembly including a valve disposed in the housing such that a fluid flow between the first passage and the second passage is blocked; a locking assembly disposed in the housing, and including a release element configured to open the valve and a locking element configured to close the valve; and a bobbin assembly configured to be disposed in the housing and to operate the locking assembly, and including a coil; a core disposed inside the coil and including a space therein, the space including a closed end and an opened end; and a plunger configured to move in the space by an electromagnetic force generated by the coil and to contact the locking assembly on the opened end side.

Abstract: A method is provided for operating an internal combustion engine, which comprises at least one combustion unit, a fresh gas tract for supplying fresh gas to the combustion unit, and a fuel tank system. A fresh gas compressor as well as a differential pressure valve are integrated into the fresh gas tract. The first purge gas line opens into a first section of the fresh gas tract, which is situated downstream from the differential pressure valve as well as upstream from the fresh gas compressor, while the second purge gas line opens into a second section of the fresh gas tract situated downstream from the fresh gas compressor. The differential pressure valve is at least partially closed at least temporarily during an intake mode of the internal combustion engine with fuel vapor filter purging, and purge gas is introduced into the fresh gas tract via the first purge gas line.

Abstract: A carbon canister includes a main body with a chamber containing activated carbon, an end cover mounted to the main body, the end cover and the main body enclosing and forming a cavity, the end cover having a desorption port for connecting with and engine, a Venturi tube mounted in the cavity and including an inlet segment, and a throat and a back suction tube. An inner diameter of the throat is smaller than an inner diameter of the inlet segment. The inlet segment communicates with the activated carbon containing chamber, the throat communicates with the desorption port, the back suction tube connects to the throat, and the back suction tube extends to the bottom of the cavity. Thereby, a negative pressure is created, the fuel collected within the carbon canister is desorbed to the engine so that the fuel utilization is improved, and the exhaust emission is reduced.

Abstract: The present disclosure describes methods and systems for determining a flow of a combustible portion of vent gas delivered to an engine. The flow rate measurement may be performed by using the engine response to a relatively short (e.g. 1 to 5 s) interruption of the vent gas flow. A cross-correlation between RPM data of the engine and a reference signal corresponding to a state of a valve configured to interrupt the vent gas flow is determined, and a flow rate of the combustible portion of the vent gas delivered to the engine is determined from the maximum value of the cross-correlation.

Abstract: 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.

Abstract: A vehicle includes a fuel tank and an evaporative-emissions system having a primary subsystem and an auxiliary subsystem. The primary subsystem has a fuel-vapor canister in fluid communication with the fuel tank to capture fuel vapors of the fuel tank. The auxiliary subsystem is configured to capture fuel vapors associated with an external fuel-storage device. The auxiliary subsystem has an auxiliary port located on an exterior of the vehicle and is configured to connect with the external fuel-storage device. The auxiliary port is selectively connected in fluid communication with the fuel-vapor canister by a valve.

Abstract: A sorption device for filtering evaporation emissions from a fuel tank, includes a vessel, with a first opening connected to an air removal path of the fuel tank and a second opening opening to atmosphere, a middle annular space between a radial outer circumferential boundary of the middle annular space and a radial inner circumferential boundary thereof radially inwardly spaced apart from the outer boundary, a first annular space formed between a radial inner surface of a fluid-tight circumferential outer shell of the vessel, the radial outer boundary being radially inwardly spaced from the inner surface, a sorbent material arranged in the middle annular space, and evaporation emissions from the fuel tank are guided through the first opening into the first annular space, through the sorbent material into a central space of the vessel in the radial direction, and through the second opening to atmosphere or another sorption device.

Abstract: A fueling system for an engine includes a fuel tank, a controller, a fuel nozzle receptacle connected to the fuel tank, the fuel nozzle receptacle including a receptacle sensor configured to send a signal to the contoller indicative of whether a fuel nozzle of a fuel dispenser is received in the fuel nozzle receptacle, and an electric fill slop valve between the fuel tank and the fuel nozzle receptacle, the electric fill stop valve being, configured to be controlled to open and close in response to a signal from the controller.

Abstract: An evaporated fuel processing device for a forced induction internal combustion engine according to the present invention includes: a first purge path extending from the downstream of a purge control valve to an intake pipe at the downstream of a throttle valve; and a second purge path extending from the downstream of the purge control valve to an ejector provided in a reflux pipe providing communication between the intake pipe at the downstream of a compressor and the intake pipe at the upstream of the compressor. The evaporated fuel processing device switches first control characteristic data for the first purge path and second control characteristic data for the second purge path, when the first purge path and the second purge path are switched.

Abstract: In an evaporated fuel treatment apparatus including a bypass passage branching from an atmosphere passage and connected to a canister by detouring around at least one ii and a bypass valve to open and close the bypass passage, a controller holds the bypass valve in a closed state until an integrated purge flow rate reaches a predetermined value after start of purge control, the integrated purge flow rate being an integrated value of flow rate of purge gas flowing through a purge passage. When the integrated purge flow rate reaches the predetermined value, the controller turns the bypass valve to an open state.

Abstract: Methods and systems are provided for improving fuel vapor storage canister purging operations for vehicles with dual-path purge systems. In one example, a method may include purging fuel vapors from a fuel vapor storage canister to an engine of a vehicle via a single path, and in response to an unmetered increase in a concentration of the fuel vapors being purged to the engine via the single path, switching the fuel vapors to be purged to the engine via two paths simultaneously. In this way, fuel vapors may be distributed in time along the two paths, which may lower an effective concentration of fuel vapors entering the engine and may thereby avoid degradation of engine operating conditions.

Abstract: An evaporative emissions control system configured to recapture and recycle emitted fuel vapor on a vehicle fuel tank is provided. The control system includes a first and second vent tube disposed in the fuel tank, a first and second vent valve, a vent shut-off assembly, a purge canister and a control module. The vent shut-off assembly selectively opens and closes the first and second valves to provide overpressure and vacuum relief for the fuel tank. The control module regulates operation of the vent shut-off assembly based on operating conditions to vent the first and second vent valves to the purge canister. The vehicle fuel tank comprises a saddle tank having first and second lobes and a raised portion arranged generally at a top portion of the fuel tank. The first vent valve is arranged generally in the first lobe and the second vent valve is arranged in the raised portion.

Abstract: An improved evaporative emission mitigation system for a motor vehicle includes a canister filled with an adsorbent material connected to a membrane module. The membrane module contains a membrane that separates gaseous hydrocarbons from inert air components within fuel vapor generated by the evaporation of fuel due to the heating of the motor vehicle. The gaseous hydrocarbons separated by the membrane are returned to the canister, where they will again be adsorbed by the adsorbent material. The inert air components are vented from the membrane module into the open atmosphere outside of the motor vehicle.

Abstract: A leakage diagnosis supplement method for a failure of a vacuum pump using an active purge pump may include: determining whether or not the vacuum pump mounted on a vent line between a canister and an atmosphere fails; reverse-rotating the active purge pump mounted on a purge line connecting the canister and an intake pipe to each other; determining whether or not an absolute value of internal pressure in a fuel tank is less than a specific value; and checking a leakage in the fuel system including the canister and the fuel tank.

Abstract: An evaporated fuel processing device that determines whether a normal state is established, by using pressures by a pressure detector while the evaporated fuel processing device shifts between: a first state where a purge passage is opened by a first valve, air passage is opened by a second valve, the purge passage is closed by a third valve, and a pump stops; a second state, after the first state, where the purge passage is opened by the first valve, the air passage is opened by the second valve, the purge passage is closed by the third valve, and the pump is operating; and a third state which takes place after the second state and where the purge passage is opened by the first valve, the air passage is closed by the second valve, the purge passage is closed by the third valve, and the pump stops.

Abstract: When a fuel tank is inclined at a negative slope and tilted to the right side, it may be tilted such that a position of a mesh member is relatively higher than a position of a vapor outlet of a vapor outlet passage. In this case, air may enter into a leak passage from an outlet port such that interfacial tension is generated in the mesh member. The interface between fuel and air is present at the mesh member, and the interfacial tension generated at the interface serves to prevent air from entering into a discharge pipe.

Abstract: An internal combustion engine with a fuel tank, a fluid-carrying component and a tank ventilation line, which fluidically connects the fuel tank and the fluid-carrying component, wherein a valve is disposed in the tank ventilation line, wherein a detection subarea of the valve is surrounded by the fluid-carrying component in such a manner that a detection space is formed around the detection subarea, wherein the detection space has at least one inlet opening via which the detection space can be pressurized and wherein at least one pressure sensor for monitoring the pressure in the detection space is provided. A method for monitoring a connection between a valve in a tank ventilation line and a fluid-carrying component is also provided.

Abstract: An evaporated fuel processing device may include: a canister that communicates with a fuel tank though a tank passage, communicates with an intake passage of an engine through a purge passage, and communicates with open air through an open air passage; a control valve that switches between a closed state of closing the purge passage and an open state of opening the same; a pump that changes a pressure in a communicating space in a case where the control valve is in the closed state, the communicating space defined by the fuel tank, the tank passage, the canister, the open air passage, and the purge passage on a side closer to the canister relative to the control valve; a pressure detector disposed in the communicating space; and a determining unit that determines the evaporated fuel processing device is not operating normally by using a pressure detection result by the pressure detector in a state where the control valve is in the closed state and the pressure in the communicating space is changed by the pump

Abstract: A fuel tank vent system includes a venting apparatus for regulating discharge of fuel vapor from a fuel tank and admission of outside air into a fuel tank. The vent valve is used to regulate pressure in a fuel tank.

Abstract: Methods and systems are provided for reducing degradation and issues related to noise, vibration and harshness (NVH) for a fuel tank pressure control valve configured to seal a fuel tank from atmosphere. In one example, a method may include depressurizing the fuel tank of a vehicle by duty cycling a tank pressure control valve and routing fuel vapors from the fuel tank to an engine, while controlling a timing of opening and closing events of the tank pressure control valve to coincide with pressure differences across the tank pressure control valve less than a threshold pressure difference in terms of pressure oscillations across the tank pressure control valve. In this way, higher loads and stress on the tank pressure control valve may be avoided, thus reducing degradation and NVH issues.

Abstract: Venting of gaseous fuel during operation and after shutdown of an internal combustion engine increases emissions. A vent handling apparatus for a gaseous fuel system of an internal combustion engine comprises an accumulator for storing gaseous fuel; a first valve selectively enabling fluid communication between the accumulator and one of a gaseous fuel communication passage and a gaseous fuel storage vessel, the gaseous fuel communication passage delivering gaseous fuel to the internal combustion engine for combustion; and an apparatus for selectively returning the gaseous fuel from the accumulator to the internal combustion engine for combustion.

Abstract: A method for diagnosing a purge control solenoid valve (PCSV) may include forming a negative pressure in a fuel tank, checking a pressure in the fuel tank and determining whether a target negative pressure is generated, when the target negative pressure is determined not to be formed based on a result of the determining whether the target negative pressure is generated, suspecting a stuck of the PCSV that electrically controls an inflow amount of evaporated gas from the fuel tank to an intake system of an engine, and increasing a purge amount of the PCSV.

Abstract: A method of removing impurities from a gas including the steps of removing impurities from biogas comprising at least one adsorbents via a process vessel or reactor, directing the purified gas to an device to generate power and/or heat, regenerating the saturated adsorption media with the waste heat recovered from the engine exhaust and directing the regeneration gas (hot air or engine exhaust) to flare, engine exhaust stack, or atmosphere.

Abstract: The present invention provides, in an internal combustion engine of the type including: a combustion cylinder having a combustion chamber; an intake port in fluid communication with the combustion chamber; an intake valve for opening and closing the intake port; an exhaust port in fluid communication with the combustion chamber; and an exhaust valve for opening and closing the exhaust portion; the improvement comprising: (a) at least one intake injector disposed within the intake port for injecting a fluid into the combustion chamber; (b) at least one exhaust injector disposed within the exhaust port for injecting a fluid toward the exhaust valve; and (c) means for controlling the at least one intake injector and the at least one exhaust injector.

Abstract: Various embodiments may include a method and a control device for operating a tank venting system of an internal combustion engine. For example, a method for operating an engine may include: activating a scavenge air pump disposed in a regeneration line with a fuel vapor retention filter; upon reaching a constant speed of an impeller of the scavenge air pump conveying the scavenge air, detecting a pressure upstream of the scavenge air pump and a pressure downstream of the scavenge air pump; calculating a differential pressure across the scavenge air pump; determining the degree of loading of the fuel vapor retention filter based at least in part on the differential pressure; and adjusting a fuel injection time based on the degree of loading.

Abstract: A fuel vapor recovery apparatus includes an adsorbent canister capable of capturing fuel vapor produced in a fuel tank, a purge passage connecting the adsorbent canister to an intake passage of an engine, and a purge pump for delivering fuel vapor from the adsorbent canister to the intake passage via the purge passage. The purge pump has a pump part and a motor part configured to drive the pump part. The fuel vapor recovery apparatus further includes a prevention mechanism for preventing liquid fuel liquefied from the fuel vapor in the purge passage from entering the motor part through the pump part.

Abstract: A hydrogen production system has an automatic feeding device connected to a buffer tank, and a first valve controlling hydrogen-producing materials to be fed into the buffer tank or not. The buffer tank connects to a main reactor, and the hydrogen-producing materials in the buffer tank are controlled by a second valve to be fed into the main reactor or not. The main reactor connects to a hydrogen storing tank. A one-way check valve is mounted between the main reactor and the hydrogen storing tank to avoid hydrogen in the hydrogen storing tank flowing back to the main reactor. The hydrogen-producing materials in the main reactor undergo a chemical reaction to produce the hydrogen, and the hydrogen storing tank stores the hydrogen to provide fuel of a fuel cell for reducing transporting cost of the hydrogen and for enhancing safety of storing the hydrogen.

Abstract: A vacuum system is provided. The vacuum system includes a vacuum aspirator coupled to a housing of an intake manifold, the vacuum aspirator including an air intake port, a vacuum port, and a manifold port. The vacuum system also includes a manifold vacuum passage and a vacuum reservoir passage traversing the housing of the intake manifold, the manifold vacuum passage coupled to the manifold port and the vacuum reservoir passage coupled to the vacuum port.

Abstract: An air separation system includes an air separation module configured to receive feed air and separate the feed air into nitrogen-enriched air and oxygen-enriched air, a nitrogen-enriched air line for transporting the nitrogen-enriched air from the air separation module to a fuel tank for inerting, an oxygen sensing line connected to the nitrogen-enriched air line, a gas adsorption filter located in the oxygen sensing line, and an oxygen sensor downstream of the gas adsorption filter in the oxygen sensing line.

Abstract: The present disclosure provides a canister for a vehicle. The canister includes a body, an adsorbent, and a weight sensing device. The body defines therein a housing space. The adsorbent is housed in the housing space. The adsorbent temporarily traps fuel vapors generated in a fuel tank for the vehicle. The weight sensing device detects a physical quantity associated with weight of the fuel vapors trapped by the adsorbent. The weight sensing device outputs the detected physical quantity.

Abstract: A ship includes a main pipe that guides CNG whose pressure is increased by an LNG pump to the engine; a pressure sensor that measures the pressure of CNG to be supplied to the engine; a pressure adjustment valve that adjusts the pressure of the CNG to a set pressure according to engine load; a differential pressure sensor that measures a differential pressure before and after the pressure adjustment valve; and a buffer tank that absorbs a variable pressure of the CNG in the main pipe. The discharge pressure of the LNG pump is controlled such that the differential pressure is increased when the pressure is low, and the differential pressure is decreased when the pressure is high.

Abstract: A filter arrangement of a vehicle includes a filter, preferably an active carbon filter, a sprung suspension for the vibrational mounting of the filter in the vehicle, a sensor unit for determining a variable corresponding to the current weight of the filter from a vibrational movement of the filter, and an analyzing unit for calculating a filling degree of the filter from the filter weight determined, taking the empty weight of the filter into account. The filter is suspended such that the filter can vibrate about a rotational axis fixed to the vehicle.

Abstract: Methods and systems are provided for a vapor canister couple to a fuel tank of a vehicle. A series of fluidically coupled, variable capacity bleed elements, externally coupled to a sidewall of the vapor canister, capture the bleed emissions resulting from desorption of fuel vapors from an adsorbent material inside the vapor canister. The series of bleed elements may be fluidically coupled through flow paths passing through the vapor canister wall, connecting through a first flow path to a chamber inside the vapor canister and connecting through a second flow path to a vent port of the vapor canister.

Abstract: Methods and systems are provided for detecting and mitigating the presence of liquid fuel carryover in an evap system of a vehicle in response to a refueling event. In one example, during a first condition, a vacuum pump is activated to pressurize the fuel system responsive to a first fuel tank pressure decay rate being less than a threshold, and responsive to a second fuel tank pressure decay rate being greater than a threshold, the vacuum pump is maintained on until a fuel tank pressure decreases to atmospheric pressure. In this way, liquid fuel carryover can be quickly and accurately diagnosed, such that mitigating actions may be taken to ensure liquid fuel is returned to the tank prior to contacting the adsorbent material within the vapor canister.

Abstract: A fuel tank valve device includes a housing in which a partition wall defines a lower valve chamber and an upper ventilation chamber, and a first opening and a second opening are provided to establish a communication between the lower valve chamber and the upper ventilation chamber, a first float valve that is accommodated in a first valve chamber of the lower valve chamber so as to rise and fall and that closes the first opening when a fuel level in a fuel tank nearly reaches a set full fuel level, and a second float valve that is accommodated in a second valve chamber of the lower valve chamber so as to rise and fall and that closes the second opening when the fuel level in the fuel tank rises abnormally.

Abstract: A fluid dispensing apparatus is provided and is configured to dispense two fluids to a vehicle. A rigid diesel spout delivers diesel, while a urea spout is slidably disposed on the diesel spout and configured to deliver urea to the vehicle. The urea spout includes a guide that cooperates with a rail on the diesel spout such that insertion of the diesel spout into the vehicle can slide the urea spout relative the diesel spout. A valve in the urea spout includes an area for receiving a projection member on the vehicle to open the urea spout when inserted into the vehicle. The vehicle correspondingly includes a diesel intake and a urea intake. A projection or pin is provided to cooperate with the dispensing apparatus to open the valve and allow urea to flow into the vehicle.

Abstract: To exert combustion control using a CNG injector, a first cutoff valve is opened. On condition that the first cutoff valve is opened, the presence or absence of fuel leakage in a high-pressure side path is determined based on a drop in a detected value of a pressure in the high-pressure side path (high-pressure side detected value PH). Inserting a nozzle for CNG filling into a filling opening causes a phenomenon where the high-pressure side detected value PH rises once and then drops. If the high-pressure side detected value PH rises at a specified rate or more, a CPU stops determination as to the presence or absence of a fuel leakage malfunction for a specified period of time.

Abstract: Methods and systems are provided for determining barometric pressure. In one example, an onboard vacuum pump is utilized to draw a vacuum at a constant flow rate across a reference orifice, and the resulting vacuum level is converted to a barometric pressure. In this way, other sensors for determining barometric pressure in a vehicle may be rationalized without the use of engine operation, and in an example where the other sensors for determining barometric pressure are not functioning as desired, barometric pressure as inferred from the onboard pump may be utilized to adjust engine operation.

Abstract: An evaporative emissions (EVAP) control system for a vehicle includes a purge pump configured to pump fuel vapor trapped in a vapor canister to an engine of the vehicle via a vapor line when engine vacuum is less than an appropriate level for delivering fuel vapor to the engine, the fuel vapor resulting from evaporation of a liquid fuel stored in a fuel tank of the engine. The EVAP control system includes a hydrocarbon (HC) sensor disposed in the vapor line and configured to measure an amount of HC in the fuel vapor pumped by the purge pump to the engine via the vapor line. The EVAP control system also includes a controller configured to, based on the measured amount of MC, control at least one of the purge pump and a purge valve to deliver a desired amount of fuel vapor to the engine.

Abstract: Systems and methods are provided for an evaporative emissions control system. In one example, a system for an engine may comprise a fuel vapor canister, a mixing valve positioned in a fresh air line upstream of the vapor canister, and an actuator physically coupled to the mixing valve for adjusting a position of the mixing valve to increase turbulence in air entering the vapor canister. The position of the mixing valve may be adjusted to increase an amount of turbulence in air entering the fuel vapor canister.

Abstract: A method for controlling a filling operation of a vehicular liquid storage system including a tank equipped with a filler pipe and a shut-off valve, the method including detecting the start of a refilling event; while the shut-off valve is open, observing whether a measured fill level of the tank has reached a predetermined fill level; if the predetermined fill level has been reached, performing the following steps: closing the shut-off valve to induce a shut-off of a filling nozzle; when a first pressure criterion is met, opening the shut-off valve; and when a second pressure criterion is met, closing the shut-off valve. The second pressure criterion includes a decrease of pressure inside the tank below a predetermined pressure level.

Abstract: A system of one or more computers configured to perform operations or actions by virtue of having software, firmware, hardware, or a combination of them installed on the system that causes the system to perform the actions. The programs can be configured to perform operations, when executed by computer, cause the computer to perform the actions. One general aspect includes a system, a program to initiate an evaporative control engine off natural vacuum test in a vehicle and identify a geolocation where a fuel was obtained for the vehicle. The system then determines an e100 value and an e0 value for a temperature of the fuel and determines a vehicle percentage of ethanol of the fuel using at least the e100 value, the e0 value, a timestamp, and a fuel tank pressure and adjusts at least one engine parameter based upon the percentage of ethanol of the first fuel.

Abstract: A filler neck assembly includes a supporting part designed to be fixed at the inlet of a liquid tank positioned on a motor vehicle and said supporting part having a central through hole mainly formed about a central axis. The filler neck assembly also includes a tubular part that is positioned in said central through hole and said tubular part having a longitudinal axis. The filler neck assembly further includes a first abutment area and a second abutment area attached to one part which is selected between the supporting part and the tubular part, and a contacting area attached to the other part which is selected between the tubular part and the supporting part such that said contacting area can cooperate with one or other of the first and second abutment areas.