11 results about "Compression pressure" patented technology

This utility model relates to a fuel tank locking nut with a sealing gasket, belonging to the technical field of fuel tank locking nuts. The fuel tank locking nut with a sealing gasket includes: a nut with a sealing gasket at its bottom; and a sealing warning mechanism for alerting the user to leak oil from the sealing gasket. The sealing warning mechanism includes a mounting groove at the bottom of the nut, a warning component at the bottom of the mounting groove, and a sealing component between the warning component and the nut. The sealing warning mechanism can effectively detect and provide early warning of gasket leakage. Through the warning component, leaking oil can be identified early and a warning signal can be issued, preventing oil spillage. The sealing component, by indicating changes in compression pressure, helps installers confirm the sealing status, preventing seal failure due to over-pressure or under-pressure, and improving the stability of the sealing effect.

The embodiment of the invention provides an engine control method and device, electronic equipment, a vehicle and a storage medium, and the method comprises the steps that when it is confirmed that the vehicle meets engine starting and stopping conditions, pre-starting and stopping control is executed, and the pre-starting and stopping control is to control an engine cam of the vehicle to continuously move in the preset adjusting direction; and after the target pre-start-stop duration, the engine camshaft is controlled to stop moving in the preset adjusting direction, the vehicle is controlled to execute engine rotating speed adjusting operation, and engine start-stop control is completed. According to the embodiment, after it is confirmed that the vehicle meets the engine starting and stopping conditions and before the engine rotating speed is changed, the engine camshaft is made to move to adjust the valve timing position based on the pre-starting and stopping control, so that the effective compression ratio is changed, the gas compression pressure in the engine starting and stopping process is reduced, and the engine starting and stopping efficiency is improved. The vibration phenomenon during starting and stopping of the engine is effectively reduced, and the success rate and stability of relieving vibration of the engine are improved.

The reusable carrier oil-gas mixing buffer comprises a first barrel and a second barrel, the first barrel is arranged in the second barrel in a sliding mode, a separation piston is arranged in the first barrel in a sliding mode, and the first barrel and the second barrel are separated into an oil cavity and an air cavity through the separation piston; an adjusting rod is coaxially and rotatably arranged in the oil cavity, a multi-stage damping device with a damping hole is arranged between the adjusting rod and the first side of the separation piston, and the adjusting rod rotates to adjust the drift diameter of the damping hole of the multi-stage damping device; a gas injection port and a gas exhaust port are formed in the gas cavity, and an electric control valve is arranged on the gas exhaust port; impact can be buffered through oil and gas matched compression, meanwhile, the damping force can be adjusted according to different buffering requirements, and the situation that the buffer is damaged due to the fact that the gas compression pressure is too large can be effectively avoided.

The invention relates to the technical field of compressors, and discloses a compressor assembly which comprises an elastic contraction type telescopic structure, two centrifugal extrusion structures and two pipeline clamping type sealing structures. According to the compressor assembly, compression of gas or liquid is achieved through the principle of the peristaltic pump, sucked media can be completely discharged through single compression, so that the compressor assembly has the advantage of being high in compression effect, and in addition, due to the fact that the peristaltic hose is extruded through centrifugal force of parts, the compression effect is good. Due to the fact that the centrifugal force can be adjusted and controlled by adjusting the rotating speed of the driving motor, once the gas compression strength is larger than the centrifugal force, the extrusion roller cannot form enough extrusion force on the peristaltic hose, and therefore the phenomenon that the peristaltic hose is broken due to the fact that the compression pressure is too large is effectively prevented, and the safety of equipment is improved.

Fuel cell stacks (3), comprising: a plurality of fuel cells (4) arranged in a stack in a row, the stack in a row having a first side and a second side which are parallel to each other; an end plate (5, 6) at each end of the row stack; a compression belt (7, 8) adjacent to the first side of the stack of rows, and a compression belt (7, 8) adjacent to the second side of the stack of rows, wherein the opposing compression belts (7, 8) are in contact with the end plates (5, 6) at each end of the stack of rows and apply a compression pressure which presses the end plates (5, 6) together; and an electrically insulating support beam (9, 10) between each compression belt (7, 8) and the row stack, wherein the opposing compression belts (7, 8) exert a load on the first side and the second side of the row stack through the support beams (9, 10), wherein the support beams (9, 10) are flat along the sides adjacent to the stack of rows and curved along the sides adjacent to the compression belts (7, 8).

The invention relates to a self-sustaining gas bearing for a concentric piston arrangement. The required gas pressure is generated by the compression pressure of the pistons and temporarily stored by check valves in an annular high-pressure reservoir within a hollow cylindrical piston. The high-pressure reservoir is formed by offset axial bores that are introduced into the hollow cylindrical piston from both sides and connect at its center. The gas flow is restricted by radial and helical grooves on the outer surface of restrictor inserts. These inserts are pressed into the axial bores and, via the radial and helical grooves, establish a connection between the high-pressure reservoir and the bearing gaps. The invention enables the use of a thin-walled, hollow cylindrical piston that can be manufactured monolithically without joining elements.The gas bearing can be designed in such a way that, in addition to guiding the hollow cylindrical piston itself, it guides an additional, concentrically arranged piston in the central bore of the hollow cylindrical piston.

The invention relates to a method (100) for reliquefying a BOG stream (B) drawn from a storage tank (T) for liquefied gas, comprising the steps: a1) extracting liquid (F1) from a liquid phase of the storage tank (T), a2) evaporating the liquid (F1) to produce an evaporated liquid (F2), b) introducing the evaporated liquid (F2) into the BOG stream (B) to generate a mixed BOG stream (BM), c) compressing the mixed BOG stream (BM) to a predetermined final compression pressure to produce a compressed mixed BOG stream (BMv), d) condensing the compressed mixed BOG stream (BMv) to produce a condensed compressed mixed BOG stream (BMvk), in particular with a condenser (46).

In a natural gas liquefaction method, prepared natural gas is compressed, the heat of compression is removed, the natural gas is cooled by three circuits containing mixed refrigerants, the pressure of the cooled gas is reduced to produce a vapor-liquid mixture, and the liquefied gas is withdrawn. In each circuit, a mixed refrigerant is compressed, the heat of compression is removed, the refrigerant is sub-cooled, the pressure thereof is lowered to produce in each circuit a low-pressure mixed refrigerant, and the low-pressure mixed refrigerant is used to cool the natural gas. The second mixed refrigerant end boiling point at the pressure at which the compression thereof commences is below the first mixed refrigerant temperature after reducing the first mixed refrigerant pressure, and the third mixed refrigerant end boiling point at the commencement compression pressure is below the second mixed refrigerant temperature after reducing the second mixed refrigerant pressure.

This invention relates to the field of automotive parts technology, and more particularly to a camshaft connection adjustment assembly. The technical solution includes: a camshaft assembly and multiple sets of cam assemblies rotatably connected to the outer surface of the camshaft assembly; further comprising: a connection limiting assembly slidably mounted on the outer surface of the camshaft assembly, the connection limiting assembly being disposed on both sides of the cam assembly. In this invention, the airbag ring deforms inward, causing the two sets of hollow ring frames to converge inward. The rubber bonding wall follows the hollow ring frames, reducing the contact area with the cam assembly. While the hollow ring frames reduce contact with the cam assembly, the concentrated air pressure increases the compression pressure per unit area, thus ensuring the stability of the cam assembly during rotation and preventing accelerated damage due to external forces when connected to automotive parts, thereby extending the service life of the cam.

The utility model belongs to the technical field of constant-pressure water replenishing devices, and particularly relates to an energy-saving constant-pressure water replenishing and air exhausting device which comprises a mounting plate, a water storage tank is fixedly mounted on the left side of the top of the mounting plate, a diaphragm type air pressure water tank is fixedly mounted on the right side of the top of the mounting plate, and a mounting water pipe is fixedly mounted on the right side of the water storage tank. And a rubber soft joint is fixedly mounted on the surface of the mounting water pipe. When the water pump works, water is conveyed to the water supply pipe network, redundant water enters the air pressure water tank, the water chamber is expanded, air in the tank is compressed, and when the pressure is increased to the highest working pressure, the control cabinet cuts off the power supply of the water pump, the water stored in the tank is conveyed to the water supply pipe network by utilizing the pressure of the compressed air in the tank, and the pressure in the tank is also reduced; and when the pressure is reduced to the lowest working pressure, the control cabinet is connected with the water pump power supply, and the water pump is restarted, so that the water pump does not need to run for a long time, and the service life of the water pump is prolonged.

The invention provides a multi-combustion-mode switching system of an aviation piston engine. The multi-combustion-mode switching system of the aviation piston engine comprises an electronic controller, an environment temperature pressure sensor, a post-pressure pressure sensor, a combustion excess air coefficient sensor and a crankshaft signal sensor, the electronic controller receives feedback signals of the sensors and controls the fuel injector, the spark plug and the variable valve mechanism to be switched to a target combustion mode according to calibrated combustion modes at different altitudes and under different working conditions and corresponding switching strategies under different modes. Wherein the combustion mode comprises a compression ignition combustion mode, a spark-assisted combustion mode and an ignition combustion mode. The advantages of ignition, spark-assisted compression ignition and compression ignition are considered, so that the fuel consumption is reduced as much as possible while the aviation piston engine realizes high lift limit, the unmanned aerial vehicle realizes high lift limit and long endurance, and the performance of the unmanned aerial vehicle is improved.