963results about "Cylinders" patented technology

The device for varying the incline of photovoltaic power generation inclination by using fluid thermal expansion of the present invention comprises a thermal expansion cylinder device and an automatic deviation correction device for simultaneously correcting deviations of the height and inclination angle of a photovoltaic panel. The thermal expansion cylinder device is composed of a thermal expansion fluid, a main piston, and a cylinder. The cylinder interior is filled with the thermal expansion fluid, the volume of which expands or contracts according to the temperature, thereby moving the main piston in the longitudinal direction. The linear displacement of the thermal expansion cylinder device installed between the photovoltaic panel and a fixed structure contracts when the ambient temperature is low (for example, winter solstice), thereby increasing the angle of inclination of the photovoltaic panel, and the linear displacement of the thermal expansion cylinder device expands when the temperature is high (for example, summer solstice), thereby lowering the angle of inclination of the photovoltaic panel. The automatic deviation correction device comprises an expanded volume accommodation device, a spring, an auxiliary piston, a check valve, and a pushrod. The forward movement length of the main piston is limited after summer solstice when the upper limit setting value is set. The check valve is opened by the thermal expansion fluid pressure such that the fluid flows into an excess expanded volume accommodation device. The auxiliary piston moves backward and compresses the spring, and when the temperature descends again after the highest temperature has been reached, the check valve is closed by the spring elastic force and pressure deviation.

The application discloses a cylinder liner, an engine and a ship, and belongs to the technical field of engines.The cylinder liner comprises a first pipe, a second pipe and a first heat-conducting layer.The first pipe has a first through hole penetrating through the first pipe along a first direction, and the first through hole is used for guiding a piston.The second pipe has a second through hole penetrating through the second pipe along the first direction, the first pipe is arranged in the second through hole along the first direction, and the first through hole and the second through hole are communicated.The first heat-conducting layer surrounds the first pipe, and the first heat-conducting layer is arranged between the first pipe and the second pipe along a direction perpendicular to the first direction, and is connected with the first pipe and the second pipe respectively.The cylinder liner is divided into the first pipe and the second pipe, different materials can be used, the cylinder liner can ensure smooth friction with the piston, and better compactness can be obtained, so that the possibility of cavity erosion of the cylinder liner is reduced.

The invention relates to the technical field of generators, and discloses an efficient heat dissipation piston generator which comprises a power generation body mechanism, wind collection and flow guide mechanisms are arranged on the two sides of the power generation body mechanism, and an air inlet and flow guide mechanism is arranged on one side of each wind collection and flow guide mechanism. According to the piston generator with the efficient heat dissipation function, through the arrangement of the power generation body mechanism, the air collection flow guide mechanism, the air inlet flow guide mechanism, the water mist spraying cooling mechanism and the seepage water collection mechanism, an active spraying cooling technology can be adopted in the using process, and micron-sized water mist is evenly sprayed to the surface of a power generation unit through the water mist spraying mechanism; and meanwhile, directional airflow is formed in combination with an air inlet flow guide structure to accelerate evaporation of liquid drops, so that heat is efficiently taken away, and compared with a traditional passive heat dissipation mode, the scheme remarkably improves the heat dissipation efficiency and reduces dependence on the environment wind speed.

The invention discloses an ammonia hydrogen fuel engine combustion system and method, and belongs to the technical field of clean energy, the system comprises a shell, the shell is provided with a combustion chamber, a pre-combustion chamber, an air inlet channel and an exhaust channel, and the pre-combustion chamber, the air inlet channel and the exhaust channel communicate with the combustion chamber; the injection valve set comprises an air inlet channel hydrogen injection valve, a pre-combustion chamber hydrogen injection valve, a direct injection hydrogen injection valve and an air inlet channel ammonia injection valve. The supply assembly comprises a hydrogen supply unit and an ammonia gas supply unit, the ammonia gas supply unit supplies ammonia gas to the combustion chamber through a gas inlet channel ammonia gas injection valve, and the hydrogen supply unit supplies hydrogen gas to the combustion chamber through a gas inlet channel hydrogen injection valve, a pre-combustion chamber hydrogen injection valve and a direct injection hydrogen injection valve; switching of the pure hydrogen premixed combustion mode, the pure hydrogen stratified combustion mode and the ammonia-hydrogen mixed combustion mode is achieved by adjusting the injection valve set and the supply assembly, the problems of abnormal combustion, power reduction and NOX and N2O emission existing on the engine are solved, and the operation stability of the engine is improved.

This invention discloses an exhaust system for a six-cylinder, four-valve engine, including a cylinder head and an exhaust pipe. The cylinder head contains coolant and has several cooling water passages. A guide edge is provided within the cylinder head, and guide holes are formed between the guide edge and the top and bottom surfaces of the cylinder head. A set of mounting holes is located above the guide holes on the front end face of the cylinder head. The exhaust pipe is fixed to the front end of the cylinder head through the mounting holes. The exhaust pipe has a segmented structure, and a sealing structure is provided at the joints of the segments. This invention eliminates dead zones in the coolant flow, improving coolant fluidity and preventing excessively high surface temperatures in the cylinder head's water passages. The installation of long bolts on the exhaust pipe, through control of positioning errors and fitting clearances, ensures that the bolts and holes do not interfere, preventing stress caused by interference and exhaust pipe breakage at high temperatures. The composition of the exhaust pipe has been improved, enhancing its high-temperature resistance.

A sliding arrangement for use in an internal combustion engine is described, comprising a cylinder liner (1) and at least one piston ring (10), wherein the liner (1) has a through-bore defining an inner surface (S) which in turn defines three sections: a first section (2) near the end of the piston stroke, facing the cylinder head (at top dead center, TDC); a second, middle section (3); and a third section (4) near the end of the piston stroke, facing the crankshaft of the engine (at top dead center, TDC), wherein (i) the TDC section (2) of the liner (1) has a surface finish with a first roughness value defined by a structure of recesses and projections (“valleys” and “raised areas”); the middle section (3) of the liner (1) has a surface finish with a second roughness value defined by a structure of recesses and projections (“valleys” and “raised areas”);(1) the BDC section (4) of the cylinder liner (1) has a surface finish with a third roughness value defined by a structure of recesses and projections (“valleys” and “raised areas”), and the roughness value of the middle section (3) is significantly lower than the roughness value of the TDC section (2), and is defined by an essentially very smooth structure of recesses and projections (“valleys” and “raised areas”); and (ii) a ceramic coating (R) is applied to at least part of the contact surface of the piston ring (10) by the physical vapor deposition (PVD) process.

A dual fuel engine system and / or retrofit system includes a cylinder head (102), an intake manifold (202), a first fuel injector (106), and a second fuel injector (204). The cylinder head defines an intake port (104). The intake manifold is coupled to the cylinder head. The first fuel injector extends into the cylinder head and is configured to dispense a first fuel. The second fuel injector extends through the intake manifold and into the cylinder head. The second fuel injector is configured to dispense a second fuel. The second fuel injector (204) is oriented to spray the second fuel into the intake port (104). The intake manifold includes an injector mount (210) extending therethrough, the injector mount separating an airflow plenum (211) of the intake manifold from the second fuel injector (204).

We provide a new cylinder liner to suppress engine vibrations. [Solution] The problem is solved by a joint comprising a cylinder block and a cylinder liner cast into the cylinder block, wherein the cylinder liner has a plurality of protrusions on its outer circumference, and the joint has a coating made of resin material or rubber material between the cylinder liner and the cylinder block.

This utility model discloses an engine assembly and a vehicle. The engine assembly according to this utility model includes: a cylinder block and a main water jacket; the cylinder block has an outer shell and an inner shell; the inner shell surrounds and defines a cylinder bore opening towards the end face of the cylinder block; the outer shell surrounds the inner shell; a connecting member is provided between the outer shell and the inner shell to support the inner shell; the main water jacket is disposed between the outer shell and the inner shell and surrounds at least a portion of the outer periphery of the cylinder bore; the main water jacket is adapted to circulate coolant to cool the cylinder block; an annular water channel is formed between the outer shell and the inner shell, located at the end face of the cylinder block and surrounding the cylinder bore; the annular water channel is disposed at the top of the main water jacket and communicates with the main water jacket. The engine assembly according to this utility model, by providing a main water jacket between the outer shell and the inner shell of the cylinder block and providing an annular water channel at the top of the main water jacket, increases the heat exchange area and heat exchange time of the coolant within the cylinder block, improves heat exchange efficiency, and thus improves the engine's heat dissipation capacity.

The invention belongs to the technical field of internal combustion engine power devices, and discloses a double-piston mechanism for an internal combustion engine, which comprises a cylinder body, and more than one cylinder is arranged in the cylinder body; an air inlet seat and an air outlet seat are installed on the upper portion and the lower portion of the cylinder body respectively, an air inlet pipe and an air outlet pipe are arranged in the air inlet seat and the air outlet seat respectively, and an air inlet channel and an air outlet channel are arranged in the air inlet pipe and the air outlet pipe respectively. A control device for gas distribution is arranged at the corresponding position of each cylinder; a high-pressure oil pump is arranged outside the cylinder body, and the high-pressure oil pump is communicated with the oil sprayer through a high-pressure oil pipe; a piston assembly I and a piston assembly II are symmetrically arranged in each cylinder body, and a bevel gear set I and a bevel gear set II which are matched with the piston assembly I and the piston assembly II to transmit power are further arranged in each cylinder body. The power performance of the internal combustion engine can be improved through the two piston assemblies, the device is small in size and light in weight, and single-machine fuel consumption and operation cost are effectively reduced.

This invention discloses a cylinder head compatible with multiple fuels, including a first mounting hole and a second mounting hole. The first mounting hole is located on the cylinder head and penetrates both the upper and lower surfaces of the cylinder head. The second mounting hole is also located on the cylinder head and penetrates both the upper and lower surfaces of the cylinder head. The first mounting hole can be used to mount a micro-injector, and the second mounting hole can be used to mount a main injector. The micro-injector and the main injector inject different fuels. Through a special valve arrangement and structural design, the cylinder head integrates the main injector mounting hole, the micro-injector mounting hole, and the air start valve mounting hole. The air start valve mounting hole can also be changed to an injector mounting hole, thereby enabling switching between multiple fuel modes and making it suitable for modular and serialized development of engines on the same platform. The bottom of the cylinder head features a fully enclosed annular water jacket design, solving the problems of thermal fatigue and poor reliability inherent in traditional cylinder heads.

A fuel injector sleeve for use in a remanufactured engine includes an elongate sleeve body including a clamping shoulder facing an axial direction and forming an undercut, and a sealing ridge transitioning between the undercut and an outer sleeve surface. The sealing ridge defines a sealing line radially outward of the undercut and extending circumferentially and uniformly around the longitudinal axis. The sealing line provides line contact between the sleeve and a clamping surface of a cylinder head to form a seal outboard of erosion upon the clamping surface from prior service. Related apparatus and remanufacturing methodology is also disclosed.

The utility model belongs to the technical field of motorcycle engines, and relates to an air cylinder head structure of a motorcycle engine, which comprises an air cylinder head, a cam shaft is arranged at the top of the air cylinder head, a timing chain wheel is sleeved on the cam shaft, a combustion chamber is arranged below the cam shaft, and a decompression ejector rod for ejecting an exhaust valve open is arranged in the cam shaft in a sliding mode. A centrifugal mechanism for driving the decompression ejector rod to slide is arranged on the timing chain wheel, a first sparking plug and a second sparking plug which are inclined are arranged on the left side and the right side of the combustion chamber respectively, and the included angle between the second sparking plug and the bottom plane of the air cylinder head is smaller than that between the first sparking plug and the bottom plane of the air cylinder head. The air cylinder head is provided with an avoiding groove for avoiding the timing chain wheel and a sleeve base extending in the direction of the avoiding groove, and a sleeve for installing a second spark plug is arranged in the sleeve base. The cylinder head structure of the motorcycle engine is compact in layout, stable in structure and capable of achieving the purpose of further saving energy and reducing consumption.

To provide an innovative solution for an internal combustion engine which is characterized by both high operating efficiency and an extremely simple structure.SOLUTION: An engine includes at least one cylinder, and a first intake valve and a second intake valve that control flows of intake air from a first intake duct and a second intake duct, respectively. The two intake ducts communicate with a common intake manifold so as to receive air at the same pressure. During the intake stage, in each cylinder operating cycle, initially an opening and closing movement of only the first intake valve is activated while the second intake valve remains closed, and subsequently an opening and closing movement of only the second intake valve is activated while the first intake valve remains closed. In this way, the two air flows at the same pressure entering the cylinder give rise to a high turbulent kinetic energy (TKE), to the advantage of combustion efficiency and reduction of harmful exhaust emissions.SELECTED DRAWING: Figure 4

The invention relates to a combustion system, an engine and a vehicle. The combustion system comprises an air inlet channel, an exhaust channel, an air inlet valve, an exhaust valve, a cylinder cover, a cylinder sleeve and a piston, a cylinder cover combustion chamber is arranged in the combustion system, and at least one of the inner surface of the cylinder cover combustion chamber, the surface, facing the interior of the combustion system, of the air inlet valve, the surface, facing the interior of the combustion system, of the exhaust valve and the top surface of the piston is provided with a thermal barrier coating.

The invention discloses an indicator valve, an engine car blowing system and a control method of the engine car blowing system, and belongs to the technical field of engines, the indicator valve comprises a shell provided with an air inlet, an air outlet and an airflow channel, and a step surface is formed on the inner wall of the airflow channel; the valve element is arranged in the shell in a sliding mode, a containing cavity is defined by the valve element and the shell, the containing cavity communicates with the air inlet and the airflow channel, and part of the valve element is embedded into the airflow channel; the valve element has a closed state and an open state, and in the closed state, the valve element is configured to be connected with the step face in a sealed mode so as to isolate the air outlet and the airflow channel. The gas inlet is formed in the indicator valve, compressed gas is conveyed into the gas inlet through other gas source devices, the compressed gas can push the valve element upwards, the valve element and the step face which are originally connected in a sealed mode are separated, then the indicator valve can be opened, conveying of the compressed gas is stopped, the indicator valve can be closed, manual opening and closing are not needed, and the working efficiency is improved. And the opening and closing difficulty of the indicator valve on a large engine is reduced.

The invention discloses an intelligent partitioned cooling control system and method for an engine cylinder block, and the system comprises a partitioned cooling water channel system which is formed in the cylinder block, comprises at least two cooling loops which are physically isolated or semi-isolated from each other, and is used for independently cooling different thermal load regions on the cylinder block; the flow control device is connected with the partitioned cooling water channel system and used for independently adjusting the flow of the cooling liquid flowing into the at least two cooling loops; the temperature sensing device comprises temperature sensors arranged on at least two different thermal load areas and is used for detecting the temperature of the cooling liquid in the thermal load areas in real time; and the intelligent control unit is in communication connection with the temperature sensing device and the flow control device and used for outputting a flow control instruction to the flow control device based on the temperature of the cooling liquid and the working condition parameters of the engine, and independent closed-loop temperature control over at least different thermal load areas is achieved.

In one instance, an engine cylinder head includes: an intake passage; an exhaust passage; a coolant channel having a first outer surface including a first portion and a second portion, the first portion being shared with the intake passage and the second portion being shared with the exhaust passage; a lubricant channel; and an in-cylinder pressure sensor (ICPS) bore at least partially defined by at least one wall having at least one second outer surface including a third portion and a fourth portion, the third portion being shared with the coolant channel and the fourth portion being shared with the lubricant channel.

The exhaust structure of the engine cylinder head comprises a cylinder head body, the cylinder head body is provided with an exhaust passage, an air outlet of the exhaust passage is provided with a flange plate, the flange plate is used for being in flange connection with an exhaust pipe of the engine, and the end, close to the flange plate, of the exhaust pipe is provided with a bent pipe section. Therefore, the exchange efficiency of fresh air and waste gas in the combustion chamber of the engine cylinder head can be improved.

The invention relates to the technical field of motorcycles and accessories thereof, and discloses a double-cylinder engine 170-degree arrangement structure which comprises a crankcase, two air cylinder assemblies are arranged on the crankcase, two air cylinder holes are symmetrically formed in the two sides of the crankcase, air cylinders are connected through the two air cylinder holes respectively, a crankshaft is arranged in the crankcase, and the crankshaft is connected with the two air cylinder assemblies. Pistons are arranged on the inner walls of the air cylinder assemblies in an attached and sliding mode, transmission is conducted between the pistons and the crankshaft through connecting rods, the included angle between the two air cylinder assemblies is 170 degrees, backflow of lubricating oil is facilitated through 170-degree V-shaped double-cylinder arrangement, and the space in the vertical direction can be saved. The problems that the sealing performance is poor and oil leakage is serious due to the fact that existing equipment is inconvenient to return oil are solved.

High-temperature and high-pressure gas is generated according to an internal combustion engine steam engine basic principle using method to drive piston motion, and the motion is converted into mechanical motion. The design principle of the hydrogen water vapor power internal combustion steam engine is based on the principle. According to the characteristic that the combustion temperature of hydrogen is high, the characteristic that water can be electrolyzed into hydrogen and oxygen, and the characteristic that the boiling point of the water under conventional atmospheric pressure is 100 DEG C, the hydrogen water vapor power internal combustion steam engine is integrated to obtain a result.

The application provides a generator intake and exhaust control structure and a generator. The generator intake and exhaust control structure comprises a cylinder, a first induction coil, a second induction coil, an air intake valve, an exhaust valve, a first relay, a second relay and a piston assembly. The first induction coil is arranged at the top of the cylinder, and the second induction coil is arranged at the bottom of the cylinder. The air intake valve and the exhaust valve are both arranged at the top of the cylinder and above the first induction coil. The input end of the first relay is connected with the first induction coil, and the control end of the first relay is connected with the exhaust valve. The input end of the second relay is connected with the second induction coil, and the control end of the second relay is connected with the air intake valve. The piston assembly comprises a piston body and a first magnet. The first magnet is embedded in the piston body, the piston body is arranged in the cylinder, the piston assembly can move up and down along the inner wall surface of the cylinder, and the first induction coil and the second induction coil generate an induced current.

The invention discloses a non-equal-wall-thickness saddle-shaped connecting pipe forging forming method in the technical field of metal material plastic forming. The non-equal-wall-thickness saddle-shaped connecting pipe forging forming method comprises the steps of material heating, free forging, ring rolling, special-shaped flange die forging and connecting pipe die forging. A conical barrel is formed through ring rolling and then is subjected to die forging to form a flange blank with the neck in a saddle arc shape, and finally, the shape of the blank is used for compensating tension and thinning during die forging, so that the end face of the neck of the connecting pipe is smooth. The problems of non-uniform forming and filling and uneven end faces of non-equal-wall-thickness structures are solved, the machining allowance is reduced, and the quality consistency of forgings is improved.

Device for cooling a vehicle engine, comprising: a combustion chamber in which a piston moves back and forth; Water jackets (16a, 16b) through which a coolant flows to cool the combustion chamber; and a cylinder block (1) which forms a frame of the vehicle engine, wherein the cylinder block (1) comprises: a cylinder block body (10) in which the combustion chamber is formed, and an exhaust gas recirculation (EGR) cooler (30) which is mounted in the cylinder block body (10) in such a way that the EGR cooler (30) exchanges heat with a coolant discharged from the combustion chamber, wherein the cylinder block body (10) is provided with an EGR cooler insertion section (20) to which a coolant from the combustion chamber is supplied and in which the EGR cooler (30) is inserted, wherein the EGR cooler (30) is provided with a gas pipe (36) in which an exhaust gas flows, wherein the exhaust gas of the gas pipe (36) is cooled by a coolant which is supplied to the EGR cooler insertion section (20), wherein a supply opening (12) is configured to supply a coolant to the EGR cooler insertion section (20) in which cylinder block body (10) is formed, wherein the cylinder block body (10) has a plurality of cylinder chambers (18), wherein the water jackets (16a, 16b) have a circulation flow channel (16b) configured to exchange heat with all cylinder chambers (18) and a direct flow channel (16a) configured to exchange heat with one of the cylinder chambers (18), wherein the feed opening (12) is formed at a point where the circulation flow channel (16b) and the direct flow channel (16a) meet, wherein the water jackets (16a, 16b) have an arc shape which encloses the outer circumferences of the cylindrical chambers (18), and wherein the EGR cooler insertion section (20) is designed such that it extends horizontally in the longitudinal direction of the cylinder block body (10).

The utility model provides a high temperature resistant gas engine valve seat ring, which relates to the technical field of valve seat rings, and comprises a gas engine body, the top of the gas engine body is provided with a valve opening, a seat ring body is embedded in the valve opening, and the surface of the seat ring body is sequentially sleeved with a wear-resistant layer and a high temperature resistant layer from outside to inside. An L-shaped groove is formed in the side, close to the valve opening, of the top of the gas engine body, and an L-shaped plate is embedded into the L-shaped groove. The wear-resistant layer and the high-temperature-resistant layer are sequentially arranged on the surface of the seat ring body from outside to inside, so that the wear-resistant and high-temperature-resistant performance of the seat ring body can be improved, the service life of the seat ring body can be prolonged, and when the seat ring body needs to be detached, the seat ring body can be detached by pushing the L-shaped plates to move, so that the service life of the seat ring body is prolonged. At the moment, an arc groove in one end of the L-shaped plate can extrude the bevel edge of the edge of the seat ring body, the effect of conveniently taking out the seat ring body can be achieved, and therefore the effect of conveniently replacing the seat ring body can be achieved.

Vehicle thermal management system, featuring: an integrated thermal management valve (ITM) (1) for receiving engine coolant through a coolant inlet (3A) connected to an engine coolant outlet (112) of an engine (110) and for distributing the engine coolant flowing towards a radiator (300) via a coolant outlet path (3B) connected to a heating core (200) and the radiator (300); a water pump (120) arranged at a front end of an engine head coolant inlet (111) of the engine (110); a coolant branch flow path (107) branched off at a front end of the engine coolant inlet such that it is connected to an exhaust gas recirculation (EGR) cooler (500); and an intelligent single valve (SSV) (400) for adjusting an engine coolant flow in the EGR cooler flow path direction in the coolant branch flow path (107), characterized by the fact that The coolant outlet path (3B) has a radiator outlet path (3B-1) connected to the radiator (300), a heater outlet path (3B-2) connected to the heater core (200), and an EGR outlet hole (3B-3) connected to the EGR cooler (500), which is connected to the coolant branch flow path (107).

The present application includes a cylinder head gasket for an internal combustion engine that includes a plurality of metal layers that together form a flange portion extending radially to or adjacent a cylinder bore, wherein the plurality of metal layers are configured to be interposed between substantially an entirety of an interface between a cylinder head and a cylinder liner of the internal combustion engine.