91 results about "Fuel vapor" patented technology

An evaporative emission control system (EVAP) canister including a housing, where the housing has a first bed volume, a second bed volume, a load port, and a purge control receptacle. The first bed volume includes a first opening and a second opening opposite the first opening. The second bed volume includes a third opening and a fourth opening opposite the third opening. The load port enables fuel vapor from a fuel tank to enter the first bed volume. The purge control receptacle is on a side of the first bed volume and is configured to receive a first purge control insert. The first purge control insert is configured to ensure that unfiltered fuel vapor condensate drawn in during a purge cycle is passed through a first portion of a fuel vapor filtering medium in the first bed volume.

The present invention provides a system (1) to prevent the formation of fuel vapors comprising a containment tank (10) and a variable volume tank (12) accommodatable within the containment tank (10), wherein the variable volume tank (12) is configured to receive liquid fuel. Our invention can be used in any tanks or reservoirs of liquid products that attack the ozone layer, preventing the formation of vapors that are extremely harmful to nature and the environment.

An adjustable evaporative emission system (EVAP) canister has a housing with at least a first chamber and a second chamber. The first chamber has a first opening and a second opening opposite the first opening, and the first chamber has a first chamber maximum capacity to house a fuel vapor filtering medium. The second chamber has a third opening and a fourth opening opposite the third opening, and the third opening is proximate the second opening of the first chamber. The second chamber has a second chamber maximum capacity to house the fuel vapor filtering medium. The housing is configured to receive a plurality of volume adjusting spacers proximate to the second opening and the third opening, where each volume adjusting spacer of the plurality of volume adjusting spacers adjusts at least one of the first chamber maximum capacity and the second chamber maximum capacity.

An internal combustion engine includes a tank that stores liquid fuel, a cylinder, an intake port connected to the cylinder, a port injection valve that injects fuel into the intake port, a pressurizer that pressurizes fuel vapor in the tank, and a low-pressure passage that connects the pressurizer and the port injection valve to each other.

An evaporative emissions (fuel vapor) canister is provided. The canister includes a casing defining an internal volume therein, and the casing includes an inlet in fluid communication with the internal volume. The internal volume includes a bed of a first adsorbent material adjacent the inlet, and a bed of a second adsorbent material separated from the inlet by the bed of the first adsorbent material. The first adsorbent material is resistant to liquid fuel, and the second adsorbent material is different than the first adsorbent material. Liquid fuel that enters the internal volume of the casing via the inlet is adsorbed by the first adsorbent material such that the first adsorbent material protects the second adsorbent material from the liquid fuel. The first adsorbent material is thereby protected from damage by the liquid fuel. A method of making an evaporative emissions canister is also provided.

This invention discloses a high-cycle adsorption-desorption fuel vapor activated carbon adsorbent and its preparation method. The preparation method includes: mixing biomass raw materials, phosphoric acid, and high-nitrogen substances in a certain proportion; stirring in a mixer at an oil bath temperature of 230°C until slightly matured; dispersing the matured mixture using a dispersion device; activating it in an externally heated activation converter by introducing a mixture of nitrogen and hydrogen gas; rinsing the activated mixture and recovering the phosphoric acid to obtain high-nitrogen activated carbon; drying the high-nitrogen activated carbon; grinding the high-nitrogen activated carbon; mixing carbon powder and gel in a mass ratio of 2:1 to maintain the moisture content of the mixture at 30%; granulating using a screw granulator; and drying and solidifying the obtained granules. This invention improves the activated carbon adsorbent by reducing the proportion of hydrophilic oxygen-containing functional groups, increasing the hydrophobicity of the activated carbon, and thus extending its service life.

A filter can includes at least one chamber, an inlet, an atmospheric port, an outlet, and a plurality of rod-shaped portions. An adsorbent for fuel vapor is disposed in the at least one chamber. The plurality of rod-shaped portions are disposed at an elongated portion of a target chamber, which is any of the at least one chamber. The adsorbent disposed in the target chamber is formed as a plurality of granular components. At least a portion of the plurality of rod-shaped portions has at least one recess formed in an outer peripheral surface thereof.

A vehicle emissions control system including: a fuel tank; a canister including a material configured to absorb fuel vapors released from liquid fuel stored within the fuel tank; a pressure relief valve configured to open to vent the fuel tank and permit the fuel vapors and the liquid fuel to flow out of the fuel tank; and a fuel separator configured to change a flow velocity of fuel flowing from the fuel tank to separate the fuel vapors from the liquid fuel, the fuel separator in fluid communication with the fuel tank and the canister to direct the fuel vapors to the canister and direct the liquid fuel away from the canister.

Vehicle system, featuring: an internal combustion engine (10); Evaporative emission system (30) with a container (40) arranged to collect fuel vapors from a fuel tank and connected to an intake part of the internal combustion engine (10) via a vent valve (37); wherein the container (40) defines a chamber (41) and a flexible metal-organic framework material (MOF) is arranged in the chamber (41); a controllable device (54) connected to the flexible MOF material; and a control unit (80) which is operationally connected to the controllable device (54) and the vent valve (37), wherein the control unit (80) contains a set of commands which can be executed to: Activating the controllable device (54) and controlling the vent valve (37) in response to a command to vent the container (40) into an open state, Determining an activation parameter for the controllable device (54), Determining a venting flow and a total venting mass, and Deactivating the controllable device (54) if the total venting mass is greater than a threshold value.

The invention relates to the field of carbon canister remaining working capacity detection, in particular to an in-use carbon canister remaining working capacity detection method and a screening testers, mixed gas containing butane is introduced from an oil filling port of a vehicle to simulate fuel steam generated by an oil tank, the mixed gas enters a carbon canister through the oil tank, and the fuel steam is fed into the carbon canister through the oil tank. A sensing element is arranged at an atmosphere port of the carbon canister so as to detect the gas concentration of mixed gas discharged from the atmosphere port; enabling the residual working capacity of the carbon canister to correspond to the gas concentration value, and obtaining a test result whether the carbon canister can be continuously used or not according to whether the measured gas concentration exceeds a preset standard value or not after the carbon canister adsorbs butane to a specified gram number. The residual adsorption capacity of the carbon tank can be detected and evaluated along with a vehicle, and environmental pollution caused by insufficient working capacity of the carbon tank is avoided.

Device for capturing fuel vapors from a vehicle, the device comprising the following: a canister device (40) with a first opening (31) which is in fluid communication with a headspace part (72) of a fuel tank (71), wherein the canister device (40) defines a chamber (41) which is in fluid communication between the first opening (31) and a second opening (32); a first metal-organic framework material, MOF, arranged in chamber (41), wherein the first MOF is configured to adsorb fuel vapor; and a second material arranged in the chamber (41), wherein the second material is configured to adsorb fuel vapor; characterized in that the first MOF material has a pore width of less than 5 nm and the second material comprises a second MOF material with a pore width in a range between 10 nm and 40 nm.

The present invention provides a device for purifying fuel vapor in a fuel system. The device increases the amount of fuel vapor desorbed from a carbon canister during engine drive, thereby preventing fuel vapor adsorbed to the carbon canister from being discharged to the atmosphere.

A carbon canister assembly may include a main carbon canister and an auxiliary carbon canister. The main carbon canister may include a first cavity. The first cavity may be cylindrical. The first cavity may be filled with an adsorption material for adsorbing evaporated fuel vapor. The auxiliary carbon canister may include a second cavity in communication with the first cavity. The second cavity may have a round table shape. A diameter of a cross section of the second cavity may gradually decreases from a bottom of the second cavity to a top of the second cavity.

The application provides a leakage detection method of a fuel evaporation system and an electronic device, and is applied to a fuel evaporation system of a vehicle. The method comprises the following steps: when the parking time of the vehicle exceeds a first preset time length, and the enabled working condition of the fuel evaporation system is normal, the vacuum degree of a first space in which a first electric control valve is in a closed state is obtained; a first diagnosis strategy or a second diagnosis strategy is selected according to the vacuum degree, and leakage detection is performed on the first space and a second space to obtain a detection result, wherein the first diagnosis strategy is a diagnosis strategy corresponding to that the first space has no leakage when the absolute value of the vacuum degree is greater than a first preset threshold. In this way, an air pump does not need to be additionally arranged, so that the hardware cost of the system is reduced. In addition, different diagnosis strategies are beneficial to improving the diagnosis completion rate. Since the first space of the fuel evaporation system rarely leaks, the frequency of using the first diagnosis strategy is usually high, and the detection process of the first diagnosis strategy is less, so that the diagnosis efficiency is improved.

The utility model provides a fuel steam pressure sensor and an automobile. The fuel steam pressure sensor comprises a housing, the housing comprises a main housing, a left interface, a right interface and a front interface, the left interface and the right interface are respectively arranged at two sides of the main housing, the front interface is arranged at the front end of the main housing, the left interface, the right interface and the main housing form a first communication cavity, and the front interface and the main housing form a second communication cavity; the upper cover is hermetically connected with the main shell through a first sealant layer, and an accommodating space is formed between the upper cover and the interior of the main shell; the integrated module is arranged at the bottom in the accommodating space and is connected with the main shell through a second sealant layer; and the PCB is arranged in the accommodating space, is connected with the integrated module and is arranged at the upper part of the integrated chip. According to the invention, all the sensitive elements are sealed on the ceramic substrate to form the integrated chip, and a plurality of circuits are printed on the ceramic to lead out signals to the patch bonding pad, so that the packaging cost is greatly reduced, and the integrated manufacturing efficiency is improved.

The present invention provides an abnormality diagnosis device for an evaporated fuel processing device capable of performing abnormality diagnosis by a simple method. The abnormality diagnosis device for an evaporated fuel processing device is provided with: a first acquisition unit; an opening / closing control unit that executes an opening / closing process in which an opening / closing operation is repeated a predetermined upper limit number of times; a second acquisition unit; and a diagnosis unit that diagnoses the fuel tank, the canister, the closing valve, and the switching valve as normal if the amount of increase from the pressure in the tank acquired by the first acquisition unit to the pressure in the tank acquired by the second acquisition unit is equal to or greater than a threshold value before the number of repetitions of the opening / closing operation reaches the upper limit number. And diagnoses at least one of the fuel tank, the canister, the closing valve, and the switching valve as an abnormality even if the number of repetitions of the opening / closing operation reaches the upper limit number and the increase amount is less than a threshold value.

The utility model provides a kind of low fuel evaporation system of oil passage unobstructed, it is related to engine fuel field, including oil tank, carbon canister, carburetor and oil switch, wherein, the oil outlet of oil tank is connected to the oil inlet of carburetor by oil switch, its gas outlet is connected to the adsorption port of carbon canister using adsorption pipeline, two-way valve is set on adsorption pipeline;The desorption port of carbon canister is connected to the desorption port of carburetor using desorption pipeline, one PCV valve is set on desorption pipeline, the negative pressure port of PCV valve is connected to the negative pressure port of carburetor, and the atmosphere balance hole of carburetor is connected with atmosphere balance hole solenoid valve;Scheme by setting first check valve, which is connected to gas outlet and atmosphere balance hole solenoid valve, second check valve, which is connected to oil tank and atmosphere, or setting second PCV valve, which is connected to negative pressure port of carburetor between air inlet and carbon canister, maintain pressure balance of oil tank when fuel engine works, and engine oil passage unobstructed can work continuously.

This disclosure provides a method, apparatus, device, and storage medium for identifying fuel tank sloshing. The method includes: determining the degree of sloshing of the vehicle as a whole along corresponding directions based on set indicators, whereby the corresponding directions include the direction perpendicular to the chassis, the direction of travel, and the lateral direction of travel; and determining the maximum value of the sloshing degree of the vehicle in each corresponding direction as the degree of sloshing of the fuel tank. This disclosure solves the problem in the prior art where fluctuations in fuel vapor pressure within the fuel tank affect the accuracy of leak detection. It enables rapid determination of whether the fuel tank is in a sloshing state through different set indicators, allowing for timely correction or cessation of the leak diagnosis process, thereby ensuring the accuracy and reliability of leak detection results and greatly expanding the application scenarios of the engine intake manifold vacuum method.

The application discloses a carbon tank and a fuel evaporation control system, wherein the carbon tank is loaded on a vehicle and used for adsorbing evaporated fuel, the carbon tank comprises a containing cavity, and an adsorbent is arranged in the containing cavity; at least two adsorption units are arranged in the containing cavity along the axial direction of the carbon tank; a partition is arranged in the adsorption unit and arranged perpendicularly to the axial direction of the carbon tank, and the partition divides one adsorption unit into two adsorption chambers; an air inlet channel is arranged in the containing cavity and used for guiding gas from an air inlet on the shell into the adsorption chamber; and an air outlet channel is arranged in the containing cavity and used for guiding the gas from the adsorption chamber to the containing cavity through an air outlet on the shell. The containing cavity of the carbon tank is divided into multiple adsorption chambers, thereby effectively blocking the migration of adsorbent particles, ensuring smooth gas flow and uniform distribution of the adsorbent, and reducing the risk of carbon powder blocking the filter pad.

The invention provides a leakage diagnosis control method and system for a low-pressure oil tank of a hybrid vehicle. The method comprises the steps that current operation parameters and current state parameters of the hybrid vehicle are obtained in real time through a vehicle control unit; wherein the current operation parameters comprise a power battery SOC value, an engine coolant temperature, a fuel tank pressure change gradient and a current vehicle speed; the current state parameters comprise the engine state, the fuel steam pressure and the environment temperature; judging whether a low-pressure oil tank leakage diagnosis request is triggered or not based on the current operating parameters; if the low-pressure oil tank leakage diagnosis request is triggered, whether an engine starting signal of the low-pressure oil tank leakage diagnosis request is enabled or not is judged based on the current state parameters; and if the low-pressure oil tank leakage diagnosis request engine starting signal is enabled, a preset engine starting control strategy is executed. The low-pressure fuel tank leakage diagnosis method can adapt to low-pressure fuel tank leakage diagnosis of the hybrid power vehicle, and can also reduce fuel consumption.

The utility model belongs to the field of warming stove, concretely relates to a kind of multi-section catalytic combustion function's warming stove, including furnace body, furnace cover and detachable furnace head, the furnace body hollow setting, the furnace cover is set in the top of furnace body, detachable catalyst sheet layer is set in the furnace head, the inside of the top of furnace cover is fixedly provided with sleeve, the sleeve is set corresponding with the furnace head position under the furnace body, furnace cover clamping state;The inside lower part of the sleeve is detachably provided with at least one layer of catalyst sheet layer;The sleeve cross section position corresponding vent hole is set on the furnace cover;The warming stove adopts the unique sleeve and multilayer catalyst installation structure design, can effectively reduce the escape of fuel vapor, and improve the combustion efficiency and utilization of fuel, reduce the emission of TVOC.

The utility model relates to the technical field of carbon tanks, in particular to a novel carbon tank which comprises a bottom shell and a body, a first spring is fixedly installed on the right side of the upper end of the bottom shell, a carbon powder pressing plate supporting plate is fixedly installed at the upper end of the first spring, and a first carbon powder pressing plate is fixedly installed at the upper end of the carbon powder pressing plate supporting plate. The interior of the carbon tank is filled with activated carbon powder with high adsorbability, three connectors are designed in the upper portion of the carbon tank and connected with an oil tank adsorption port, an engine desorption port and a fresh air atmosphere port respectively, and after an engine flames out, redundant fuel steam in the oil tank is introduced into the carbon tank through the adsorption port to be adsorbed on activated carbon. Purified air is discharged into the air through the atmosphere port. When an automobile is started, the electromagnetic valve between the desorption port of the carbon tank and the intake manifold is opened, air enters from the atmosphere port, and the absorbed fuel steam is desorbed and sucked into an engine to participate in combustion, so that the purposes of fuel saving and environmental protection are achieved.

The utility model discloses a pressure loss alarm device of a fuel oil steam boiler, which comprises a steam header, a steam pressure gauge, a pressure switch and an alarm, the steam header is connected with the fuel oil steam boiler through a steam delivery pipe, a pressure tapping is arranged on the steam header, and the steam pressure gauge and the pressure switch are arranged on the pressure tapping. The steam pressure gauge is used for detecting the steam pressure in the steam header; the pressure switch is connected with the alarm through a wire and used for driving the alarm to send out an alarm signal when the steam boiler loses pressure. According to the invention, the pressure loss fault of the fuel oil steam boiler in the operation process can be effectively prevented, so that the safe operation of the steam boiler and the continuous production of steam are ensured.

The application relates to a containing device of a vehicle and the vehicle. The containing device comprises a containing structure, the containing structure is used for containing an adsorbent, and the adsorbent is used for adsorbing fuel vapor. The containing structure is provided with an adsorption port, a desorption port and an atmosphere port. The adsorption port is used for communicating with a fuel tank of the vehicle. The desorption port is used for communicating with an air intake manifold of an engine of the vehicle. The atmosphere port is used for communicating with an atmosphere environment outside the containing device. The containing device has at least two states. In different states, the volume of a space in the containing structure which communicates with the adsorption port is different, or the volume of a space in the containing structure which communicates with the desorption port is different.

This invention discloses a high-pressure fuel tank fuel evaporative emission control system and method for hybrid electric vehicles, including a high-pressure fuel tank, an engine, a charcoal canister, an evaporative emission controller, a hybrid vehicle controller, and a high-temperature desorption system. The high-pressure fuel tank stores gasoline vapors. When the fuel tank pressure reaches a threshold or before refueling, the evaporative emission controller controls the isolation valve to open, allowing the vapors in the fuel tank to flow to the charcoal canister through a pressure relief pipeline. By calculating the current charcoal canister load and communicating with the hybrid vehicle controller to obtain the hybrid vehicle's operating status, the evaporative emission controller adopts corresponding control strategies based on the charcoal canister load and the hybrid vehicle's operating status. During charcoal canister desorption, the high-temperature desorption system controlled by the evaporative emission controller can significantly improve desorption efficiency. This effectively solves the problems of low desorption efficiency and full charcoal canister load caused by the short engine operating time in hybrid electric vehicles equipped with high-pressure fuel tanks.

According to the dual-fuel carburetor with the special fuel gas flow channel, the partition plate is arranged on the throat portion to form the special fuel gas flow channel between the fuel gas nozzle and the fuel oil nozzle, so that the fuel gas nozzle and the fuel oil nozzle are separated from each other, and it is guaranteed that fuel oil or / and fuel gas smoothly enters the throat portion to be mixed with air; fuel oil steam sprayed by the fuel oil nozzle is prevented from splashing to the fuel gas nozzle, so that fuel oil flows into the fuel gas inlet channel, and the fuel gas flow is prevented from being influenced; the partition plate is bent towards the direction of the fuel gas nozzle to form the arc-shaped partition plate, so that the special fuel gas throat is formed, the mixing effect of fuel gas and air or / and fuel oil is enhanced, the combustion efficiency of an engine is improved, the fuel utilization rate is increased, the fuel cost is reduced, and the purposes of energy conservation and environmental protection are achieved.

Fuel supply device (FS), comprising: a filler neck body (110) configured to form a hollow fuel passage section (110a) arranged to define a fuel passage (100P) through which supplied fuel passes, and an attachment section (111) configured to fit into a tube (40) arranged for introducing the supplied fuel into a fuel tank (FT), a pipe guide (150) arranged within the fuel passage section (110a) and configured for introducing a dispensing nozzle (NZ) for supplying the fuel, and a first rib (151) positioned in a region where the attachment section (111) is positioned in a direction along an axis passing through the center of the fuel passage (100P) between the filler neck body (110) and the pipe guide (150).and which is provided for contact with an outer circumferential surface of the pipe guide (150), wherein the first rib (151) is integrated with the pipe guide (150) such that it projects from the outer circumferential surface of the pipe guide (150), the fuel tank (FT)-side end (150y) of the pipe guide (150) and a fuel tank (FT)-side end of the first rib (151) are located closer to the fuel tank (FT) than a downstream lower end of the filler neck body (110), the fuel supply device (FS) further comprising a vent opening (115) which is connected to the filler neck body (110) and introduces fuel vapor into the fuel passage (100P) for circulation in the fuel passage (100P), and the mounting section (111) is located closer to the fuel tank (FT) than a section where the vent opening (115) is connected to the filling nozzle body (110).

A turbine engine comprises a lubrication circuit (20) through which a lubricant (21) passes and a supply circuit (40) through which a fuel (41) passes, where the lubrication circuit (20) comprises an enclosure (22) in which a liquid phase (23) and a gas phase (24) are established, the lubrication circuit (20) further comprises a sensor (30) arranged to detect the presence of a fuel vapor (41) in the gas phase (24). An aircraft provided with such a turbine engine is disclosed. A leak detection method is disclosed.

A method of operating a fuel cell system includes vaporizing a liquid fuel in a vaporizer located in a hot box using heat generated by the fuel cell system to form a fuel vapor, and providing the fuel vapor to a stack of fuel cells located in the hot box to generate power.