1049 results about "Crankcase" patented technology

The invention provides a ribbon loom driven by horizontally opposed crankshafts, which comprises a base rack provided with a crankcase, a crankshaft driving assembly is arranged in the crankcase and drives a heald frame opening mechanism through a connecting rod, and a cloth tape winding mechanism, a weaving mechanism and a weft yarn feeding mechanism are further arranged above the crankcase. The crankshaft driving assembly comprises a rear crankshaft set and a front crankshaft set which are horizontally and oppositely arranged, a first synchronous wheel and a second synchronous wheel in the rear crankshaft set are connected through a rear main shaft piece, and a driving belt wheel is installed on a motor piece and connected with the first synchronous wheel through a first synchronous belt. The front crankshaft set and the rear crankshaft set are driven to rotate synchronously, all heald frame openings in the heald frame opening mechanism operate synchronously according to the preset opening rhythm, openings are formed through the heald frame set, the openings reach the weaving mechanism to be woven into cloth belts, and then the cloth belts are wound into a container through the winding mechanism. The vibration and noise of the machine are reduced, and the overall processing efficiency of the ribbon loom is improved.

The invention discloses a crankcase air supply system, a crankcase air supply control method, a controller and a vehicle, and relates to the field of hydrogen internal combustion engines. The crankcase air supply system comprises a first air supply pipeline communicating with an air outlet of a supercharger and a first end of a four-way valve, and a second air supply pipeline communicating with an air outlet of a pressurized air storage tank and a second end of the four-way valve; the air outlet of the air filter of the hydrogen internal combustion engine is communicated with the third end of the four-way valve, the four-way valve is communicated with the air supply port of the crankcase, and when the hydrogen internal combustion engine is in a high-load and high-moisture state, the opening degree of the first flow adjusting valve is controlled to be larger than that of the second flow adjusting valve. The opening degree of the second flow adjusting valve is larger than that of the third flow adjusting valve. The method is implemented on the basis of the supercharger, the pressurized gas storage tank and the air filter, and the opening degree of each flow regulating valve is regulated, so that the inlet gas water content is reduced while the gas supplementing requirement of the crankcase is met, and the aim of improving the operation reliability of the hydrogen internal combustion engine is achieved.

A motorcycle with a single transmission breather that is mounted over the transmission case. Crank case gas passes through the breather. Oil separated from the breather drains back to a cavity under the breather. Gases separated in the breather travel through a breather hose to an airbox. The breather utilizes a sloped incline in order to prevent oil that separates out from pooling.

The utility model provides a transmission mechanism of an air compressor, and belongs to the technical field of air compressors. The technical problem that the temperature in an existing crankcase is prone to rising is solved. A transmission mechanism of an air compressor comprises a crankcase internally provided with a containing cavity, a driving motor is fixedly connected to the crankcase, the driving motor comprises a motor shaft, one end of the motor shaft extends into the containing cavity, air cylinders are fixedly arranged on the two sides, perpendicular to the driving motor, of the crankcase respectively, two eccentric wheels are fixedly connected to the motor shaft, and the two eccentric wheels are fixedly connected to the crankshaft. The two eccentric wheels are fixedly sleeved with bearings respectively, the two bearings are fixedly sleeved with connecting rods respectively, the ends, away from the motor shaft, of the connecting rods are fixedly connected with pistons, and the pistons are located in the air cylinder. The air compressor is fast in heat dissipation and high in efficiency.

The disclosure relates to a transmission system for a human powered vehicle, or light electric vehicle, comprising a crank housing, a crank axle, a front sprocket mounted to an output shaft concentric with the crank axle, and a transmission having an input connected to the crank axle and an output connected to the output shaft. The transmission comprises a planetary gear system, configured to be operated according one of a plurality of different selectable transmission ratios, mounted on a lay shaft which is offset and parallel to the crank axle, and an input transmission stage for transmitting torque from the crank axle to an input of the planetary gear system, wherein the input transmission stage has a speed increasing transmission ratio.

The invention discloses a compressor (1) comprising at least a gas leak recirculation duct (R1) connected between the packing (9) and the aspiration of the compressor (17), preferably several ducts (R2, R3, R4) recirculation the leaks from the several compartments (81, 82, 83) of the compressor (1) towards the aspiration (17) of the compressor (1). Thus, possible gas leaks in the compressor (1) are sent to the admission. Further, this compressor (1) comprises a crankcase (7) lubrication system through which an ionic liquid (LI) flows instead of oil (A), and the crankcase (7) is maintained pressurized, that is, essentially airtight.

The utility model relates to the technical field of reciprocating plunger pumps, and provides a plunger pressing sleeve assembly of a reciprocating plunger pump, which comprises a pressing sleeve, one end of the inner wall of the pressing sleeve is provided with a limiting part, and one side of the limiting part is sleeved with a spring and a sealing filler which are tightly attached to the inner wall of the pressing sleeve; through the wave spring, the sealing performance is improved, and the abrasion loss of a sealing material is compensated; the structure is simple, the dismounting efficiency is high, and the maintenance cost and time are reduced; the leakage flow direction is changed, and emulsification of crankcase lubricating oil is avoided; the device is made of a high-strength material, and is good in compression resistance and corrosion resistance.

The utility model relates to the technical field of engine starting, in particular to a starting structure of an in-line piston engine, an engine and an aircraft thereof, which comprises a starting motor, the starting motor is installed on the upper portion of an engine crankshaft box body, and the output end of the starting motor penetrates through the box body and drives a reduction gear assembly through gear meshing. The reduction gear assembly comprises a reduction gear and a driving gear, the reduction gear is formed by laminating a plurality of large gears, the driving gear is meshed with the reduction gear, the large gears are laminated through friction plates and belleville springs, a starting gear is arranged at the front end of the engine crankshaft, and a one-way overrunning clutch assembly is integrally arranged on the starting gear. According to the utility model, the installation position of the starting motor is moved from the end part of the crankcase body to the upper part of the crankcase body, and meanwhile, the number of gears is reduced, so that the miniaturization design of the crankcase body is realized.

An internal combustion engine for a vehicle includes: a crankshaft; a balancer shaft that is connected to the crankshaft and is rotated by rotational power transmitted from the crankshaft; a crankcase including a crank chamber that accommodates the crankshaft and the balancer shaft; and a filler that fills a space around the balancer shaft in the crank chamber and is a member different from a wall surrounding the crank chamber.

The utility model discloses a compressor and electrical equipment, the compressor comprises a shell, an outer exhaust pipe, a crankcase, a first gas path, a second gas path and at least one silencer, the crankcase is provided with at least two buffer cavities; the first gas path comprises one buffer cavity or a part of buffer cavities which are communicated in sequence; the second gas path comprises another buffer cavity or another part of buffer cavities which are communicated in sequence; the first gas path and the second gas path are sequentially communicated with the external exhaust pipe; or the first gas path and the second gas path are connected in parallel and are respectively communicated with the external exhaust pipe; wherein a connecting pipe is connected between every two adjacent buffer cavities which are communicated with each other, a connecting pipe is connected between the buffer cavity and the outer exhaust pipe which are communicated with each other, and at least one connecting pipe is connected with a silencer. The compressor can reduce exhaust pulsation and improve stability of exhaust airflow, and therefore vibration and noise are reduced.

The invention belongs to the technical field of piston engines, and particularly relates to a variable-volume crankcase which is integrated with a deformable and automatically-recoverable device, a variable-volume cavity is formed in the crankcase through a deformable or slidable diaphragm, and particularly, an elastic reset element is arranged in the upper surface of the device, so that the variable-volume cavity is formed in the crankcase. It is ensured that the diaphragm can stably and regularly move and reset after deforming or sliding; power for deformation or sliding of the diaphragm comes from periodical extrusion of an engine crank to the diaphragm, by correctly matching a volume change curve of the crankcase with an air distribution phase, the volume of the crankcase is enlarged during air inlet, so that negative pressure in the crankcase is increased, the volume of the crankcase is reduced during scavenging, pressure in the crankcase is increased, and the service life of the crankcase is prolonged. The technical problems of insufficient air intake, low scavenging efficiency, power attenuation and the like of a two-stroke piston engine under the low air pressure condition are solved, and a feasible solution is provided for power improvement of a small aero-engine and power recovery in a high-altitude environment.

The invention discloses a hydrogen engine crankcase hydrogen concentration control method, and relates to the field of hydrogen engines, and the method comprises the steps: placing a hydrogen engine on a rack for testing, and obtaining a target hydrogen concentration, an actually measured hydrogen concentration and a crankcase blow-by amount; according to the target hydrogen concentration, the actually measured hydrogen concentration and the crankcase blow-by amount, the target working condition supplementary air amount is calculated; according to the target working condition supplementary air amount, a full-working-condition supplementary air amount database is generated based on the rotating speeds and loads of the different working conditions; obtaining the amount of fresh air needing to be supplemented under the current target working condition according to the full-working-condition air supplementing amount database; the air inlet pressure, the air inlet temperature and the crankcase pressure are obtained; the method comprises the following steps: calculating the opening degree of a throttle valve by combining the air inlet pressure, the air inlet temperature and the crankcase pressure, comparing the hydrogen concentration measured by a hydrogen concentration sensor according to the current target working condition with the target hydrogen concentration to obtain a hydrogen concentration deviation and generate a corrected fresh air amount, and carrying out closed-loop control on the actual crankcase hydrogen concentration by adjusting the opening degree of the throttle valve.

The invention relates to a method for monitoring the ventilation of a crankcase (120) of a hydrogen internal combustion engine (100) and to a hydrogen internal combustion engine (100), which has combustion chambers (110) and a gas sensor (140) that is provided in the exhaust tract (130) of the hydrogen internal combustion engine (100) and is designed to generate a gas signal that is representative of the hydrogen content or oxygen content in the exhaust gas of the hydrogen internal combustion engine (100). The method according to the invention has the steps of: determining a specified operating mode of the hydrogen internal combustion engine (100) during which substantially no combustion processes of an air-hydrogen mixture take place within the combustion chambers (110); receiving a gas signal from the gas sensor (140) in the specified operating mode of the hydrogen internal combustion engine (100); determining the hydrogen content in the exhaust gas of the hydrogen internal combustion engine (100) at least partly on the basis of the received gas signal; and determining a functional ventilation of the crankcase (120) if the determined hydrogen content in the exhaust gas of the hydrogen internal combustion engine (100) exceeds a specified hydrogen content threshold value.

The invention relates to the technical field of hydrogen engines, in particular to a hydrogen internal combustion engine and a scavenging control method of the hydrogen internal combustion engine. The hydrogen internal combustion engine comprises an engine cylinder body assembly, a supercharger, an air filtering device, an air supplementing part, an air outlet part and a control device, the air supplementing part comprises a first air supplementing pipeline and at least two second air supplementing pipelines, and an air outlet of the air filtering device is communicated with the first air supplementing pipeline and an air inlet of the supercharger. One end of the first air supply pipeline is communicated with the air filtering device, the other end of the first air supply pipeline is communicated with the crankcase, the cylinder cover is communicated with an air outlet of the supercharger through at least one second air supply pipeline, the crankcase is communicated with the air outlet of the supercharger through at least one second air supply pipeline, and the air outlet part is communicated with the crankcase. The control device is electrically connected with the air supply part and the air outlet part. According to the hydrogen internal combustion engine, through the design of the multiple gas supplementing pipelines, the hydrogen concentration can be effectively reduced, and excessive hydrogen gathering is avoided.

A first passage communicating a portion downstream side of the compressor in the intake passage and an upstream side of the intercooler with the crankcase, a second passage communicating a portion downstream of the intercooler in the intake passage with the crankcase, and a third passage communicating a portion upstream of the compressor in the intake passage with the crankcase are installed in the turbocharged engine, and a switching valve for switching between a state in which the first passage communicates and the second passage is blocked, and a state in which the first passage is blocked and the second passage communicates is provided.

A hybrid power unit includes: an internal combustion engine; a power transmitting shaft to which power from a crank shaft is transmitted and which is housed in a crank case; an electric motor including a motor driving shaft projecting from a motor housing toward a lateral side, the electric motor being located on an outer surface of the crank case; a linkage which extends through a through hole of the crank case and through which power from the motor driving shaft is transmitted to the power transmitting shaft; and a shaft cover defining a shaft space that houses a portion of the motor driving shaft which projects from the motor housing, the shaft cover being detachably fixed to the outer surface of the crank case so as to cover the through hole.

The utility model relates to an oil-gas separation device in a crankcase in an internal combustion engine, in particular to an efficient oil-gas separator device which comprises a main body and a main body base. The main body base is provided with an oil gas inlet and an oil outlet which are respectively positioned on two sides of the main body base, the main body base is provided with a mixed gas inlet, and the upper part of the inner side of the mixed gas inlet is provided with a turbulent flow adsorption grid plate; an integrated separation filter element, a first filter plate and a second filter screen are arranged in the main body, a filter safety valve, a spring connecting rod and a filter element fixing partition plate are arranged in the integrated separation filter element, the first filter plate is located at the upper end of the interior of the main body, and filter holes are formed in the lower portion of the second filter screen. The oil-gas separation and filtration device has the advantages that the internal design is compact, the occupied volume space is small, and the oil-gas separation and filtration effects are good.

The utility model discloses a novel compressor main machine head structure which comprises a crankcase, a crankshaft disc, a connecting rod, a piston and a cylinder body. A plurality of cylinder bodies are evenly distributed on the outer circumferential face of the crankcase in the circumferential direction of the crankcase at intervals, and each cylinder body is arranged in the radial direction of the crankcase. The crankshaft disc is arranged in the crankcase and coaxially connected to the crankshaft in a sleeving mode. Connecting rods are further arranged on the outer circumferential face of the crankshaft disc in the radial direction corresponding to the positions of the cylinder bodies, one end of each connecting rod is hinged to the crankshaft disc in the circumferential direction of the crankshaft disc, a lining is further arranged at the hinged joint of the connecting rods and the crankshaft disc, and the abrasive resistance of the hinged joint is enhanced through the lining. The other end of each connecting rod is provided with a piston matched with the connecting rod, and the pistons are driven to move in the corresponding cylinder bodies in a reciprocating mode. The compressor is simple in structure, the multiple cylinder bodies are arranged at intervals in the circumferential direction, the transmission distance of the crankshaft can be effectively shortened, and therefore the size of the compressor is reduced, and the occupied area is reduced.

A system including an engine capable of operating with fuel containing hydrogen, the system being provided with: a crankcase of the engine; an engine intake passage that sucks air into the engine; a crankcase intake passage that branches off from the engine intake passage and introduces air into the crankcase; a dilution air valve that is disposed in the crankcase intake passage and that opens and closes the crankcase intake passage; a compressor disposed upstream of a branch portion branching from the engine intake passage to the crankcase intake passage; a hydrogen sensor that detects a hydrogen concentration inside the crankcase; a crankcase exhaust passage that exhausts air inside the crankcase; and a control device that controls the opening and closing of the dilution air valve on the basis of the hydrogen concentration detected by the hydrogen sensor.

The utility model discloses a diesel engine crankcase deep hole derusting device which is used for derusting a diesel engine crankcase deep hole and comprises a hollow pipe and a negative pressure connector detachably connected with one end of the hollow pipe, the other end of the hollow pipe is connected with a detachable polishing head, and metal bristles are evenly distributed on the outer wall of the polishing head. A circumferential vent hole is formed in the position, close to the polishing head, of the pipe wall of the hollow pipe, and the negative pressure connector is of a hollow structure and comprises a handheld body pipe communicating with the hollow pipe and a bent branch pipe communicating with the handheld body pipe and used for introducing compressed air inwards from an end opening. The bent branch pipe is of a C-shaped bent structure, and the bent direction enables compressed air to flow from an end opening of the bent branch pipe to an end opening far away from the hollow pipe. Compressed air is introduced into the negative pressure connector to generate negative pressure in the device, the fallen rust is sucked into the device while the rust is scraped and polished, cleaning is not needed after rust removal is completed, and complete cleaning of the deep hole of the crankcase of the diesel engine can be achieved.

The application discloses a hydrogen engine crankcase hydrogen concentration control method, and relates to the field of hydrogen engines, which comprises the following steps: placing a hydrogen engine on a test bench to test, obtaining a target hydrogen concentration, an actually measured hydrogen concentration and a crankcase blow-by amount; calculating a target working condition supplementary air amount according to the target hydrogen concentration, the actually measured hydrogen concentration and the crankcase blow-by amount; generating a full working condition supplementary air amount database according to the target working condition supplementary air amount, based on the rotating speed and the load of different working conditions; obtaining the fresh air amount required to be supplemented by a current target working condition according to the full working condition supplementary air amount database; obtaining an intake air pressure, an intake air temperature and a crankcase pressure; combining the intake air pressure, the intake air temperature and the crankcase pressure to calculate a throttle opening degree; comparing the hydrogen concentration measured by a hydrogen concentration sensor according to the current target working condition with the target hydrogen concentration to obtain a hydrogen concentration deviation; generating a corrected fresh air amount; and performing closed-loop control on the actual crankcase hydrogen concentration by adjusting the throttle opening degree.

The invention provides an integrated multi-motor fracturing pump, a fracturing truck and a fracturing pry, and relates to the field of fracturing equipment. The fracturing pump comprises an integrated structure formed by integrating and connecting a crankcase assembly and two same transfer case assemblies arranged at the two ends of the crankcase assembly, a power box component with a fracturing pump base at the bottom, and a plurality of motors which are arranged above the crankcase assembly in a centralized mode, divided into two groups and connected with the input ends of the transfer case assemblies at the two ends respectively. And the fluid end component is connected with the output end of the crankcase assembly. The motor, the transfer case and the crankcase are integrated at the power end of the fracturing pump, so that the fracturing equipment which is compact in structure, small in occupied space, concentrated in gravity center, stable in operation, simple and convenient to drive, capable of reducing noise, energy consumption and emission, energy-saving and environment-friendly is provided; therefore, the technical problems that an existing electric drive fracturing device is complex in structure, high in requirement for the installation technology, large in overall weight, large in space size, inconvenient to transport and the like are solved.

The invention provides a ventilation system of a supercharged engine. The first passage communicates the downstream intake part with the crankcase in order to ventilate the crankcase. A second passage communicates the upstream intake portion with the crankcase. The oil separator is provided in the second passage. A third passage communicates the downstream intake portion with the oil separator. The one-way valve restricts the flow of gas through the third passage from the oil separator toward the downstream intake portion.

This invention relates to the field of high-pressure washer technology, and discloses a flow channel, pump head, and high-pressure washer housing. The housing includes a power chamber, a motor chamber, and a control chamber. A crankshaft cover for sealing the power chamber and a motor cover for sealing the motor chamber are fixed to the housing, with the crankshaft cover and motor cover located on opposite sides of the housing. The flow channel comprises a reciprocating circular flow channel and a power chamber flow channel. The housing has an inlet connected to the inlet of the reciprocating circular flow channel, an outlet connected to the inlet of the power chamber flow channel, and an outlet connected to the outlet of the power chamber flow channel. This flow channel achieves both the guiding of cleaning water and the cooling of the equipment. As the cleaning water flows through the flow channel, it simultaneously dissipates heat from the core systems of the high-pressure washer, including its power, control, and transmission systems, simplifying the overall structure of the equipment and improving space utilization.

The present disclosure provides an engine oil cooling structure of an engine. In the engine oil cooling structure of an engine, the engine includes a crankcase, the crankcase is provided with an oil filter mounting chamber having a cylindrical shape, the cooling structure includes a water channel, a water inlet of the water channel communicates with a water pump, the crankcase is further provided with a main oil channel, the crankcase is further provided with a heat conducting thin wall, an inner cavity of the heat conducting thin wall form the oil filter mounting chamber, the oil filter mounting chamber communicates with the main oil channel, the water channel is arranged around an outer side wall of the heat conducting thin wall, and a water outlet of the water channel communicates with a cooling water channel arranged in the same direction as and adjacent to the main oil channel.

The application relates to an engine crankcase oil-gas separation control method and system, which is used for optimizing the oil-gas separation efficiency of an engine crankcase oil-gas separation unit. The method comprises the following steps: determining an opening control parameter Delta P of a gravity one-way valve according to the pressure difference between the air flow pressure P2 of an outer cavity of the oil-gas separation unit and the air flow pressure P1 of an inner cavity of the oil-gas separation unit; acquiring the liquid surface pressure P of a dynamic oil liquid surface height H in an ascending process when the oil-gas separation unit is running; when P is smaller than Delta P, the gravity one-way valve is controlled to be closed; when P is larger than Delta P, the gravity one-way valve is controlled to be opened; in the opened state of the gravity one-way valve, the oil is discharged to make the dynamic oil liquid surface height H drop, and the state switching of the gravity one-way valve makes the dynamic oil liquid surface height H maintain small-amplitude fluctuation in a set interval. The application has the beneficial effects that the oil-gas separation system selection efficiency and control precision can be improved, and the one-time success rate and overall reliability of system development can be improved.

This utility model belongs to the technical field of motorcycle parts, and relates to an oil cooling structure for a motorcycle engine. It includes a crankcase, in which a crankshaft is housed and filled with engine oil. One end of the crankshaft extends out of the crankcase and is fitted with a fan. The fan is covered by a fan shroud, the outer end of which has an axial air inlet and a circumferential air outlet on its side wall. Several cooling fins are arranged on the side of the crankcase near the fan shroud. The inner side of the cooling fins contacts the engine oil and transfers heat, while the outer side is covered by a radial extension of the fan shroud. An air outlet communicating with the air outlet is provided on the radial extension of the fan shroud. The oil cooling structure for a motorcycle engine provided by this utility model can significantly improve the oil cooling effect of the engine.

The present application relates to the technical field of motorcycle accessories, and discloses an engine with an oil delivery pipeline for delivering engine oil, the oil delivery pipeline comprising a first oil passage arranged on a crankcase and a second oil passage arranged on a cylinder, an oil inlet of the first oil passage being in communication with a central hole of a crank bearing seat, an oil outlet of the first oil passage being in communication with an oil inlet of the second oil passage, the second oil passage extending from the cylinder to the crankcase, and an oil outlet of the second oil passage being located on a joint surface of the cylinder. The engine can deliver engine oil from the crankcase to the cylinder through a shorter path without increasing machining processes and special components, the arrangement of the first oil passage and the second oil passage is not affected by relevant dimensions such as cylinder diameter and water jacket width, and the structure is simple and reliable and has excellent use effect. The present application also provides a motorcycle, which also has the advantage that the arrangement of the oil passage is not affected by cylinder diameter, crank span, water jacket width and the like, and the motorcycle has compact structure and good lightweight effect.

The utility model relates to the technical field of engine oil pan, especially a leakage-proof structure of in-line piston engine, an engine and an aircraft, including setting in the oil pan of engine crankcase body subassembly lower part, the oil pan forms a basin -like structure of one inner bottom surface basically level, the inner bottom surface of oil pan is concave downward and forms the oil storage groove that the structure is further outward protruding relative to the outer bottom surface of oil pan, the outer bottom surface of oil pan and the outside wall between oil storage groove smooth transition, the sealing edge contact surface of oil pan and engine crankcase body subassembly connection is wide side design, and is installed on the sealing edge contact surface with wide -side sealing pad, and the width of wide -side sealing pad is greater than the width of sealing edge contact surface, the utility model simplifies the structure, makes can adapt to the large inclination angle of aircraft ±45 DEG movement, greatly reduces the oil leakage risk simultaneously.

The present invention discloses a diesel engine crankcase active safety monitoring system and method, the diesel engine crankcase active safety monitoring system comprising: a blowby monitoring module, which is used to monitor the blowby gas flow rate of the engine crankcase; an oil and gas monitoring module, which is used to monitor the oil mist concentration of the engine crankcase; an engine-side monitoring box, which is used to collect the blowby gas flow rate, the oil mist concentration, the engine speed and the engine torque, and send them; a cloud server, which is used to determine the degree of wear of the engine piston ring and the main bearing according to the blowby gas flow rate, the oil mist concentration, the engine speed and the engine torque sent by the engine-side monitoring box through a trained transfer learning model, thereby realizing accurate monitoring of the engine crankcase blowby condition, and accurately identifying the degree of wear of the engine piston ring and the main bearing through the transfer learning model, thereby realizing real-time monitoring of the healthy online status of the engine.