25results about "Condensed fuel collection/return" patented technology

Procedure for diagnosing a fault in a dual flushing system, comprising: Detect, by means of a control (CLR), a pressure in a fuel tank (10) in which vapor gas is collected, measured by a fuel tank pressure sensor (11) when a turbocharger (90) is operated for boosting and a purge valve (30) is actuated; Diagnosing, by the control unit (CLR), a current situation as a fault situation in which an engine vacuum generating line (40) connected between the purge valve (30) and a front end of an expansion tank (50) remains open when a pressure change value calculated on the basis of the fuel tank pressure (10) exceeds a reference value; Output, by the control system (CLR), of a warning regarding an error situation when an error is detected; and Diagnosing, by the control (CLR), the current situation as a fault situation in which a forced vacuum generating line (70) remains closed when the pressure change value calculated on the basis of the pressure difference of the fuel tank (10) is within a reference range that is smaller than the reference value, wherein a return flow line (80) is connected between a front end of the turbocharger (90) and a front end of a throttle valve (60) and the forced vacuum generating line (70) is connected between the purge valve (30) and a section connected to the front end of the turbocharger (90) and the return flow line (80) to collect the vaporizing gas in a container (20) which is operated to be selectively purged into one of the two lines, and where the current situation is diagnosed as a fault situation in which an ejector (81) connected between the forced vacuum generation line (70), the return flow line (80) and the turbocharger (90) remains closed.

The utility model discloses a skid-mounted BOG (Boil Off Gas) treatment system of a dual-fuel ship. The skid-mounted BOG treatment system comprises a BOG main treatment system and an auxiliary system, the BOG main treatment system comprises a BOG preheater, a BOG suction port tank, two compressors, a primary oil-gas separator, a BOG cooler and a secondary oil-gas separator; an inlet of the BOG preheater is connected with a BOG supply port, an outlet of the BOG preheater is connected with an inlet of the BOG suction port tank, and an outlet of the BOG suction port tank is connected with air inlets of the two compressors; outlets of the two compressors are connected with an inlet of the first-stage oil-gas separator; an outlet of the first-stage oil-gas separator is connected with an inlet of the BOG cooler; an outlet of the BOG cooler is connected with an inlet of the second-stage oil-gas separator, and an outlet of the second-stage oil-gas separator is connected with an inlet of a gas user pipeline on a ship. The auxiliary system comprises a heat exchange medium system and a lubricating oil circulation system. According to the utility model, the cost can be reduced, and the BOG treatment efficiency can be improved.

The invention relates to the technical field of vehicles, and discloses a carbon-free tank type oil gas recovery system and a vehicle, the carbon-free tank type oil gas recovery system comprises a high-pressure fuel tank, the high-pressure fuel tank is used for storing fuel oil and sealing gasoline steam in the fuel tank; the condenser is connected with an internal gas chamber of the high-pressure fuel tank through a gas inlet pipe and is used for receiving and condensing fuel steam from the high-pressure fuel tank; the recovery pipeline is connected between the condenser and the high-pressure fuel tank and is used for guiding liquid fuel formed after condensation into the high-pressure fuel tank; the one-way valve is arranged on the recovery pipeline and is used for preventing the fuel steam from flowing back through the recovery pipeline; and the high-pressure fuel tank isolation valve is communicated to one end, close to the recovery pipeline, of the condenser, and is used for controlling the pressure release and sealing of the high-pressure fuel tank. Oil gas is recovered for the plug-in hybrid electric vehicle through the design of the carbon-free tank.

Method for a power machine (10) comprising the following: Adjusting exhaust gas recirculation (EGR) based on a flow rate at an ejector intake port, wherein the flow rate is based on a flow characteristic of the ejector (36) and a flow characteristic of a power engine system and not on sensor measurements, wherein an outlet of the The power engine system is coupled to the ejector intake channel; and further comprising compensating a measurement of a gas component sensor arranged in a power engine inlet downstream of an outlet of the ejector (36) on the basis of the flow rate at the ejector intake channel.

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.

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 application discloses a marine methanol engine fuel supply device, which comprises a methanol storage tank, a methanol supply skid-mounted unit, a methanol delivery unit, a collecting tank, a delivery pump and a PLC controller, the methanol supply skid-mounted unit comprises a pressurizing pump, a pressure regulating valve, a filter, an air blower and a plurality of two-way electromagnetic valves which are arranged in a methanol supply skid-mounted shell, the methanol delivery unit comprises a two-way electromagnetic valve, a methanol fuel common rail pipe and a second manual valve, and signal lines of the PLC controller are connected with control ends of the two-way electromagnetic valves, a control end of the pressurizing pump, an inner cavity pressure sensor and an outer cavity pressure sensor of the methanol fuel common rail pipe respectively. The application improves the utilization rate of methanol fuel, ensures the safe operation of the marine methanol engine, further saves the use cost of methanol fuel and effectively avoids the poisoning risk caused by methanol fuel leakage.

To provide a vapor separator tank capable of holding a pressure regulator with a simple structure and suppressing increase in the number of components, assembling man-hours, and manufacturing cost.SOLUTION: The VST (vapor separate tank) 10 includes a casing 20 that has a lower case 22 and an upper case 24 joined to each other and in which a fuel storage chamber 26 for storing liquid fuel is formed, a pump 40 that is disposed in the casing 20 and pumps the liquid fuel stored in the fuel storage chamber 26, and a regulator (pressure regulator) 50 that is sandwiched between the lower case 22 and the upper case 24 in an accommodation space formed in the casing 20 and adjusts the discharge pressure of the pump 40 to be constant. The casing 20 includes the regulator support 70, which contacts and supports the regulator 50.SELECTED DRAWING: Figure 5

The present invention provides a fuel supply system that promotes the efficient use of fuel in hydrogen-powered engines while minimizing pressure increases within the fuel supply tank. [Solution] The fuel supply system comprises a fuel supply tank 2 for storing liquefied hydrogen, a fuel pump 4 located in the fuel supply passage R1, a branch passage R2, a gas-liquid separator 5 installed in the branch passage R2, a gas storage unit 6A for introducing and temporarily storing the hydrogen gas separated by the gas-liquid separator 5 and supplying it to a predetermined device 12 that uses hydrogen gas as fuel, a first control valve V1 located in the fuel supply passage R1, a second control valve V2 located in the branch passage R2, and a controller 10. The controller 10 opens the first control valve V1 with the second control valve V2 closed when the engine 11 is started to start the fuel pump 4, and closes the first control valve V1 to stop the fuel pump 4 from running and temporarily opens the second control valve V2 when the engine 11 is stopped.

This invention provides an ammonia-containing exhaust gas treatment system and its operation method. The system integrates combustion and reliquefaction processes. First, ammonia is separated from the ammonia-containing exhaust gas using a membrane separator. The remaining portion after ammonia separation is the mixed gas to be emitted. When the exhaust gas analyzer detects that the mixed gas meets emission standards, it is directly emitted into the environment. When the analyzer detects that the mixed gas does not meet emission standards, it is returned to the exhaust gas buffer tank. The reliquefaction process involves reliquefying, storing, and reusing the separated ammonia as fuel, turning waste into treasure and creating economic value. The combustion process involves the system fully combusting the ammonia exhaust gas, using liquid ammonia produced during reliquefaction as fuel. Based on this self-circulation, the two processes have advantages such as simple structure, synergy, and ease of installation, making them easy to widely promote.

The invention discloses a fuel supply system and method for a bulldozer in a cold region. The system comprises a main fuel tank, an auxiliary fuel tank and a fuel reversing valve. An oil outlet of the main oil tank is communicated with a first oil inlet of the fuel oil reversing valve; an oil return port of the main oil tank is communicated with a first oil return port of the fuel reversing valve; an oil outlet of the auxiliary oil tank is communicated with a second oil inlet of the fuel oil reversing valve; an oil return port of the auxiliary oil tank is communicated with a second oil return port of the fuel oil reversing valve; when the engine is started, the fuel oil reversing valve is in a state that the second oil inlet is communicated with the reversing valve oil outlet and the third oil return port is communicated with the second oil return port; after the engine is started for a first set time, the fuel oil reversing valve is in a state that a first oil inlet is communicated with an oil outlet of the reversing valve and a third oil return port is communicated with a second oil return port; and after the engine is started for a second set time, the fuel oil reversing valve is in a state that the first oil inlet is communicated with the reversing valve oil outlet and the third oil return port is communicated with the first oil return port. Diesel oil can be effectively prevented from being mixed.

A leak detection module may include a housing and a canister valve solenoid (CVS) arranged within the housing and in fluid communication along a first fluid passageway between canister and atmospheric ports. The leak detection module may include a second fluid passageway in parallel with the first fluid passageway and fluidly connected to the canister and atmospheric ports. A CVS check valve is arranged in the second fluid passageway and a volatile organic compound (VOC) gas sensor is arranged in one of the first and second passageways, configured to measure the concentration of hydrocarbons (HC) therethrough. A mass flow meter is arranged in one of the first and second passageways to determine a mass flow rate from the canister port to the atmospheric port. A controller measures the quality of the emissions by monitoring the HC and communicates the result to a base station.

To provide a drain treatment device capable of effectively utilizing an ammonia component of an ammonia-containing drain recovered from a fuel injection system of a marine diesel engine.SOLUTION: A drain treatment device, which is one embodiment of the present invention, includes: a recovery part which communicates with a fuel injection system for spraying ammonia fuel and fossil fuel into a combustion chamber of a marine diesel engine, and which recovers an ammonia-containing drain discharged from the fuel injection system; and a supply part that supplies an ammonia component, included in the recovered ammonia-containing drain, to one or more functional parts functioning by utilizing the ammonia component.SELECTED DRAWING: Figure 1

Provided is a blowdown treatment device capable of effectively utilizing ammonia components of ammonia-containing blowdown recovered from a fuel injection system of a marine diesel engine. A blowdown treatment device of one embodiment includes a recovery portion that communicates with a fuel injection system for injecting ammonia fuel and fossil fuel into a combustion chamber of a marine diesel engine, and recovers ammonia-containing blowdown discharged from the fuel injection system, and a supply portion that supplies ammonia components contained in the recovered ammonia-containing blowdown to one or more functional portions that function using the ammonia components.

In a VST (vapor separator tank), a lower case is provided with a plurality of attachment portions attached to an engine (internal combustion engine) and drain piping for discharging liquid fuel from a fuel storage compartment. The lower case includes a first bottom surface portion including a lowermost surface, a second bottom surface portion formed in a position higher than the first bottom surface portion and supporting a pump, and a third bottom surface portion formed in a position higher than the first bottom surface portion and the second bottom surface portion. Disclosed embodiments provide a vapor separator tank in which the capacity of a fuel storage compartment is sufficiently secured, and which allows easy arrangement of other equipment and parts around the vapor separator tank while enabling easy design change.

The present invention provides an antifreeze device that prevents water vapor from freezing by raising the temperature of the blow-by gas. [Solution] The antifreeze device comprises a PCV passage that recirculates blow-by gas, mainly composed of unburned gas leaked into the engine, to the intake port, and a hot water pipe that circulates hot water, forming a double-pipe structure that covers at least a portion of the outer circumference of the PCV passage. The cylindrical part of the PCV passage covered by the hot water pipe is formed in a bellows shape, and the hot water pipe has an inlet for introducing hot water and an outlet for discharging hot water. Both the inlet and outlet are provided on the side wall of the hot water pipe facing upwards towards the vehicle, and the opening of the inlet is provided above the bellows-shaped protrusion.

The invention provides an anti-freezing device capable of increasing the temperature of blow-by gas to prevent water vapor from freezing. The anti-freezing device is provided with: a PCV passage for returning blow-by gas, the main component of which is unburned gas leaked into the interior of an engine, to an intake port; and a warm water pipe which covers at least a part of the outer periphery of the PCV passage, has a double-pipe structure, and is used for circulating warm water, a cylinder pipe of the PCV passage covered by the warm water pipe is formed in a corrugated shape, the warm water pipe is provided with an introduction port for introducing warm water and a discharge port for discharging the warm water, and the introduction port and the discharge port are arranged on the side wall of the warm water pipe so as to face the upper part of the vehicle. The opening portion of the introduction port is provided above the corrugated convex portion.

A fuel tank system comprises a fuel tank (15), a container (34) capable of adsorbing and desorbing fuel vapor generated in the fuel tank (15), a vapor channel (31) fluidly connecting the fuel tank (15) to the container (34), a parking brake (170) designed to be operated by a driver, a closing valve (52) arranged along the vapor channel (31) designed to seal the fuel tank (15), and a sealing pressure switching mechanism (92) designed to set a sealing pressure of the closing valve (52) to a first sealing pressure when the parking brake (170) is released. The sealing pressure switching mechanism (92) is further designed to adjust the sealing pressure of the closing valve (52) to a second sealing pressure which is greater than the first sealing pressure when the parking brake (170) is applied.This fuel tank system, designed to suppress fuel vapor emissions while the internal combustion engine is stopped, is cost-effective compared to conventional systems.

TITLE: Crankcase Gas Recirculation Line Leak Detection System Crankcase gas recirculation line (5) leak detection system of an internal combustion engine (Mx) connecting the outlet of the oil separator (4) to the intake line (6) between the air filter (7) and the turbocharger (8), comprising: a pressure sensor (C1, C2, C3) respectively downstream of the turbocharger (8), downstream of the throttle body (9), at the outlet of the oil separator (4), and - a learning machine (LMx) receiving the pressure signals (P1-3) from the sensors and the engine field signals from the engine (Mx) to generate a fault signal (SDj) by a combination of the pressure signals (P1-3), interpreted by the machine (LMx) as corresponding to a leak in the recirculation line (5). The learning machine (LMx) is prepared from a model learning machine (LMa) of a model detection system (100a), applied to a test engine (Ma).Figure 1.

This invention relates to a methanol fuel tank vapor recovery device for mining machinery. By setting a trigger switch, the internal pressure of the fuel tank can be monitored in real time. When the pressure reaches a certain threshold, the trigger switch activates a solenoid valve and a blow-suction pump. The vapor recovery tank absorbs the vapor from above the fuel tank until the internal pressure decreases, causing the contact block to move away from the trigger switch, and the solenoid valve inside the steam pipe closes. At this point, a pressure plate compresses an elastic sleeve, causing coolant to extend along the sleeve to the top of the sealing plate for cooling. Then, the solenoid valve and electromagnet inside the steam pipe close, and the blow-suction pump switches to blowing mode, blowing air towards the top of the sealing plate, pushing the sealing plate downwards. Through pressurization, the vapor is converted into liquid oil. The solenoid valve inside the return pipe opens, returning the collected liquid oil back to the fuel tank, thus achieving the effect of converting vapor into liquid for collection and reuse.

This fuel supply system comprises: a fuel supply tank which holds liquefied hydrogen; a fuel pump which is disposed on a fuel supply flow path; a branch flow path; a gas-liquid separator which is installed on the branch flow path; a gas reservoir into which hydrogen gas which has been separated off in the gas-liquid separator is introduced and temporarily stored, and which supplies the hydrogen gas to a predetermined device which uses the hydrogen gas as fuel; a first control valve which is disposed on the fuel supply flow path; a second control valve which is disposed on the branch flow path; and a controller. At engine startup time, the controller opens the first control valve while in a state where the second control valve is closed, initiates driving of the fuel pump. At engine shutdown time, the controller closes the first control valve, halts driving of the fuel pump, and temporarily opens the second control valve.

A VST (vapor separator tank) includes a casing including a lower case and an upper case joined to each other and having a fuel storage compartment formed therein to store liquid fuel, a pump arranged in the casing and pumping the liquid fuel stored in the fuel storage compartment, and a regulator (pressure regulator) sandwiched by the lower case and the upper case inside an accommodation space formed in the casing, and adjusting a discharge pressure of the pump to be constant. The casing includes a regulator support portion abutting on and supporting the regulator. Disclosed embodiments provide a vapor separator tank capable of holding a pressure regulator with a simpler structure and suppressing an increase in the number of parts, man-hours for assembly, and manufacturing costs.

A fuel tank system comprises a fuel tank (15), a container (34) capable of adsorbing and desorbing fuel vapor generated in the fuel tank (15), a vapor channel (31) fluidly connecting the fuel tank (15) to the container (34), a parking brake (170) designed to be operated by a driver, a closing valve (52) arranged along the vapor channel (31) designed to seal the fuel tank (15), and a sealing pressure switching mechanism (92) designed to set a sealing pressure of the closing valve (52) to a first sealing pressure when the parking brake (170) is released. The sealing pressure switching mechanism (92) is further designed to adjust the sealing pressure of the closing valve (52) to a second sealing pressure which is greater than the first sealing pressure when the parking brake (170) is applied.This fuel tank system, designed to suppress fuel vapor emissions while the internal combustion engine is stopped, is cost-effective compared to conventional systems.

The utility model discloses a quick connector for an oil return pipeline of a high-pressure common rail system of a diesel engine, which relates to the technical field of passenger car equipment and comprises a connector main body, one end of the connector main body is butted with a pipe joint, the other end of the pipe joint is fixedly provided with a connecting boss, and a sealing component is arranged in an inner cavity of the side wall of the connector main body. In the inserting process, the extrusion rods are synchronously inserted into the through grooves corresponding to the extrusion rods, and the piston rods are driven to synchronously move along with continuous pushing of the extrusion rods, so that the pistons are driven to move towards the bottom of the inner cavity of the piston barrel, inert gas in the piston barrel is extruded and conveyed into the air bag sealing ring through the connecting pipe, and the sealing effect is achieved. After inert gas enters the air bag sealing ring, the outer side of the air bag sealing ring is fixed by the annular fixing plate, and the inner side of the air bag sealing ring begins to expand inwards until the inert gas completely enters the sealing groove in the outer wall of the pipe joint, so that sealing of inserting connection of the pipe joint and the connector body is completed, and leakage of the device and waste of resources are prevented.

To introduce different types of air as close as possible to the turbocharger, a connector (1) is proposed, having a flow recovery element (2) (F1, F2), for example, flows of recirculated gas and oil-free crankcase gas, respectively. An end fitting (3) of the connector, for fluid connection to a turbocharger inlet, extends the element (2) with a piping system (4, 6). The end fitting (3) also has a tubular outer wall (8) shaped like a sleeve to form the outlet (O3) of the connector, allowing several gas flows (F1, F2, F3) circulating separately towards the outlet. The peripheral channel (VP) around the piping system (4, 6) allows fresh air to circulate towards the outlet in a gas flow (F3) not routed via the element (2), within the internal volume (V3) of the outer wall (8). (See diagram: Figure 2)