162 results about "Engine valve" patented technology

This invention provides an engine valve and a method for manufacturing the same, which can suppress galvanic corrosion even when dissimilar metals are joined, and which exhibits excellent wear resistance and corrosion resistance, for use in engines that use CNG, LPG, or alcohol as fuel. [Solution] The engine valve 10 of the present invention is a joint member in which a shaft portion 14 made of martensitic heat-resistant steel SUH11 and a umbrella portion 12 made of austenitic heat-resistant steel SUH35 are joined. A nitride layer is formed only on the surface of the base material on the shaft portion 14 side from the joint portion 13 between the shaft portion 14 and the umbrella portion 12, leaving the surface of the base material exposed on the umbrella portion 12 side from the joint portion 13.

A piston positioning mechanism includes a resilient retainer disposed in an annular groove on the outside of the piston, the resilient retainer engaging the wall of the bore of the piston to create a resistance to movement of the piston within the bore, the resistance to movement maintaining the piston in a retracted position within the bore, the retracted position being one in which the piston is clear of the engine valves. The embodiment eliminates the need for a conventional piston return spring, reduces the height of the piston mechanism, and reduces the opening oil pressure of the piston.

The utility model provides automatic installation device of engine valve, including valve feeding mechanism, adjusting mechanism and clamping mechanism. The device transports corresponding valve respectively through first conveyer and second conveyer who sets side by side, and places valve on first table board and second table board, to position and guide the transport of valve, and the second mechanical arm can simultaneously snatch the air inlet valve and the exhaust valve by taking and placing mechanism, and can snatch corresponding valve alone, and the cylinder cover is adjusted by the cooperation of lifting assembly and clamping turnover assembly, to control the installation position of the well adjusted cylinder cover, and the second mechanical arm is convenient for snatching valve and is installed fast, realizes the automation assembly of two kinds of valves.

A nitriding treatment tool belongs to the technical field of mechanical equipment and comprises a plurality of framework groups, a plurality of height adjusting parts and a plurality of connecting parts, each framework group comprises an upper framework, a lower framework, a plurality of connecting blocks and a placing net, the connecting blocks are positioned between the two frameworks and are fixedly connected with the frameworks, and the placing net is fixedly mounted in the frameworks. The frame sets are sequentially arranged from top to bottom, the connecting parts are fixedly connected with the frame sets, the height adjusting parts are located between every two vertically-adjacent frame sets and detachably connected with the connecting parts, the engine valve nitriding device is suitable for nitriding of engine valves, and the distance between the frames and the hole diameter of a containing net can be adjusted according to the sizes of other shaft parts and rod parts; the tool is suitable for nitriding machining of various parts, and the universality of the tool is improved; meanwhile, the number of the frame groups can be flexibly increased or decreased, small-batch multi-specification production can be met, large-batch centralized machining can be adapted, and the production flexibility and the large-scale requirement are both considered.

The utility model relates to the technical field of engine rocker arm braking, and discloses an engine rocker arm braking device which comprises a braking assembly installed in a rocker arm body, a containing groove and a braking groove are formed in the rocker arm body, the containing groove and the braking groove are communicated in a crossed mode, and a movable assembly is connected in the containing groove. One end of the movable assembly penetrates through the containing groove to abut against an engine valve, the brake assembly is located in the brake groove, one end of the brake assembly is connected with the movable assembly, and an oil groove is formed in the end, away from the containing groove, of the brake groove and connected with the brake assembly. According to the engine rocker arm braking device, the engine valve drives the braking assembly to move into the containing groove, so that braking is limited by the braking assembly, braking of the engine rocker arm is achieved, meanwhile, hydraulic thrust is provided through the oil groove, and the problem that braking cannot be relieved due to the fact that resistance at the joint of the braking assembly and the movable assembly is too large is solved; the braking assembly is stably driven, and then rocker arm braking is relieved.

A cylinder deactivation system for an engine includes an engine block defining a cylinder. A valve opens and closes a port to the cylinder. The rocker arm pivots to operate the valve. The camshaft has a cam lift, and the cam-to-rocker input system transmits the cam lift to the valve through the rocker arm. A deactivation assembly is disposed in the rocker arm and responsive to fluid pressure to alternately achieve an activated state of the valve and a deactivated state of the valve.

The utility model relates to a vibration friction welding machine for machining an engine valve chamber cover, which comprises a machining table, a vibration head, a pressurizing cylinder, a first-stage forward moving seat, a second-stage forward moving seat and a locking device, the first-stage forward moving seat is positioned above the machining table, and the machining table is provided with a first-stage forward moving mechanism for driving the first-stage forward moving seat to move back and forth; the second-stage forward moving seat is located above the first-stage forward moving seat, the first-stage forward moving seat is provided with a second-stage forward moving mechanism for driving the second-stage forward moving seat to move front and back, a lower tool is arranged on the upper end face of the second-stage forward moving seat, and the lower tool is located in front of the operation window after the first-stage forward moving seat and the second-stage forward moving seat move forwards; the lower tool is located under the upper tool after the first-stage forward moving base and the second-stage forward moving base move backwards, and the locking device locks the position of the second-stage forward moving base when the vibration head conducts vibration friction welding. By the adoption of the scheme, the vibration friction welding machine for machining the engine valve chamber cover improves production efficiency and safety.

The utility model relates to the technical field of air valve machining, and discloses an engine air valve machining tool, which solves the problem that the existing machining tool is inconvenient to automatically feed and discharge air valves, and comprises an air valve feeding assembly, an air valve discharging assembly, an air valve continuous transferring assembly and an air valve positioning and clamping assembly, the valve continuous transferring assembly is fixedly connected to the interior of the valve positioning and clamping assembly, the valve positioning and clamping assembly is located between the valve feeding assembly and the valve discharging assembly, and the valve feeding assembly and the valve discharging assembly are each composed of a supporting frame, a conveying belt, a first servo motor and a plurality of first valve positioning supports. The valve continuous transferring assembly is composed of a strip-shaped shell, a second servo motor, a lead screw, a sliding block, a first air cylinder, an I-shaped support, two second valve positioning supports and two third valve positioning supports. By means of the machining tool, automatic feeding and discharging of the air valves can be achieved, and the machining efficiency is improved.

This internal combustion engine (1) has a hydraulically driven variable valve timing mechanism (8) capable of changing the valve timing of an engine valve. To change the valve timing of the engine valve, the internal combustion engine (1) temporarily increases the working hydraulic pressure supplied to the variable valve timing mechanism (8) to a target hydraulic pressure (Pt) at the time of switching. To change the valve timing of the engine valve, when the working hydraulic pressure becomes equal to or higher than a predetermined control-permission hydraulic pressure (Pc) lower than the target hydraulic pressure (Pt) at the time of switching, the internal combustion engine (1) starts control of the variable valve timing mechanism (8) to change the valve timing of the engine valve.

The utility model relates to the technical field of engines, in particular to an engine valve tappet layout structure which comprises a cam shaft arranged in an engine box body, tappets are arranged on the engine box body and correspond to two valve cams arranged on the cam shaft in pairs, the upper ends of the tappets are used for being connected with valve push rods, and the lower ends of the tappets are used for being connected with valve push rods. The upper ends of the valve push rods extend upwards and are arranged on a cylinder cover above an engine cylinder head; an oil pump is arranged on the engine box body and corresponds to a pressure supply cam arranged on the cam shaft, and the pressure supply cam is matched with the pressure supply end of the oil pump. The paired two valve cams are arranged at one end of the cam shaft, and the pressure supply cam is arranged at the other end of the cam shaft. The utility model has the characteristics that the structural design is simpler and more reasonable, the layout is more compact, and the working reliability can be improved.

A hollow engine valve 100 having a shaft portion 111 and a petal portion 113 which is expanded in diameter in an umbrella shape at a base end of the shaft portion 111, into which a cooling material is enclosed in a hollow portion 115 provided at least in the inside of the shaft portion 111, wherein the shaft portion 111 has a first shaft portion 111a on a tip end side, a second shaft portion 111b on a base end side which is larger in outer diameter than the first shaft portion 111a, and a step portion 111c which is formed by the difference in outer diameter between the first shaft portion 111a and the second shaft portion 111b, and the wall thickness t2 of the step portion 111c is thicker than the wall thickness t1 of the second shaft portion 111b.

A valve actuation system includes a first rocker arm assembly operatively connected to a first valve actuation motion source and connected to a first engine valve with a first lost motion component disposed in series between a first input rocker arm and a first output rocker arm. A second rocker arm assembly is operatively connected to a second valve actuation motion source and to a second engine valve, wherein a second lost motion component is disposed in series between the second input rocker arm and the second output rocker arm. The one-way coupling mechanism is arranged such that the second valve actuation motion is transmitted to the first output rocker arm but the first valve actuation motion is not transmitted to the second output rocker arm. Further, a primary hydraulic lash adjuster is configured in the second rocker arm assembly such that the primary hydraulic lash adjuster operates the first output rocker arm via a one-way coupling mechanism.

The utility model relates to the technical field of engines, and discloses a plane tappet, an engine valve mechanism, an engine system and a vehicle, the plane tappet comprises a base and a tappet body, the tappet body is located on the side, away from a contact face, of the base, and the top end of the tappet body is used for abutting against a push rod; an oil passing channel is formed in the plane tappet, a first opening and a second opening are formed in the two ends of the oil passing channel respectively, the first opening is located in the top end, and the second opening is located in the contact face. In the working process, engine oil flows to the top end of the tappet body, then flows into the oil passing channel through the first opening and finally flows out of the second opening. Therefore, due to the arrangement of the oil passing channel, it can be guaranteed that enough engine oil flows to the gap between the contact face and the cam shaft, the lubricating performance between the plane tappet and the cam shaft is improved, and then the working efficiency of an engine valve mechanism is improved.

The utility model discloses a fixing tool facilitating quick drilling of oil holes in two ends of an engine valve rocker arm, which comprises a bottom plate, opening U-shaped grooves are arranged on two opposite sides of the bottom plate, a first clamping plate and a second clamping plate are arranged on the upper end face of the bottom plate, and a rocker arm placing area is formed between the first clamping plate and the second clamping plate. Pressing plates are arranged on the side walls, forming the rocker arm placing areas, of the first clamping plate and the second clamping plate correspondingly, a first positioning plate and a second positioning plate are arranged at the side wall ends, away from the pressing plates, of the first clamping plate and the second clamping plate correspondingly, a first air cylinder is installed on the first positioning plate, and a second air cylinder is installed on the second positioning plate; a piston rod of the first air cylinder is connected with the first clamping plate, and a piston rod of the second air cylinder is connected with the second clamping plate. Drilling of oil holes in the two ends of the rocker arm can be completed at a time, repeated disassembly and assembly are not needed, meanwhile, air cylinder jacking is adopted, operation is easy and labor is saved, the efficiency is improved by 2-4 times compared with a single-hole machining mode, and the production period is greatly shortened.

The utility model discloses an engine valve clearance combination tool belongs to frock technical field, solved the traditional method to rely on operator's experience and hand feeling, and the adjustment precision is difficult to guarantee and the operation complex and time -consuming problem. The engine valve clearance combination tool, including adjusting handle, adjusting wrench, both ends of adjusting handle are equipped with adjusting screw rod, the adjusting screw rod with adjusting handle between being equipped with conical body, the outer wall surface of adjusting handle both ends is hexagonal structure, adjusting wrench including ratchet sleeve, torque wrench, the detachable of ratchet sleeve installs one end at torque wrench, the upper portion of ratchet sleeve inner wall is equipped with with hexagonal structure's inner hexagonal structure, the lower portion of ratchet sleeve inner wall is equipped with with the outer wall surface of conical body's conical surface. The utility model discloses an engine valve clearance combination tool, effectively improves work efficiency and adjustment precision.

A valve actuation system comprises a first arm having a first arm contact surface and operatively connected to a valve actuation motion. A second arm having a second arm contact surface is operatively connected to the at least one engine valve. A discrete lost motion device is provided that is controllable between a first, motion conveying state and a second, motion absorbing state. The discrete lost motion devices comprises a plunger contact surface and a housing contact surface. The housing contact surface is configured to engage one of the first or second arm contact surfaces, and the plunger contact surface is configured to engage another of the first and the second arm contact surfaces. The first and second arm contact surfaces, the housing contact surface and the first plunger contact surface are configured to support the discrete lost motion device between the first arm and the second arm.

The application discloses a timing chain assembling and adjusting device and method of a V-type engine and belongs to the technical field of passenger car engine research and development trial assembling and adjusting, and comprises a layered assembling module, a tensioning chain module and a tightening camshaft sprocket module.The layered assembling module is used for sequentially assembling an oil pump chain set, a left camshaft chain set and a right camshaft chain set and tightening an oil pump sprocket.The tensioning chain module is used for sequentially tensioning the left camshaft chain, the right camshaft chain and the oil pump chain.The tightening camshaft sprocket module is used for tightening a right-row camshaft sprocket, a right-in camshaft sprocket, a left-row camshaft sprocket and a left-in camshaft sprocket in a clockwise direction as a tightening sequence.The camshaft and the crankshaft are simultaneously operated, so that power transmission efficiency attenuation is reduced, valve timing lag is eliminated, engine valve timing precision, engine performance and quality are improved, the failure rate is reduced, maintainability and whole-machine reliability are improved, and the service life of the engine is prolonged.

The utility model discloses an automobile engine valve spring rotation stopping structure which comprises a valve guide pipe, a valve spring, a rotation stopping rod and a locking rod, one end of the rotation stopping rod is fixedly connected with a connecting plate, and one side of the connecting plate is fixedly connected with a first electromagnet connected with the valve guide pipe in a matched mode. A connecting assembly is arranged at one end of the locking rod and used for fixing the locking rod to the valve spring, the connecting assembly comprises a mounting frame fixedly connected to the locking rod, two clamping plates arranged on the inner side of the mounting frame and a positioning assembly, one clamping plate is fixedly connected to the mounting frame, and the other clamping plate is fixedly connected to the positioning assembly. The positioning assembly is used for positioning the other clamping plate on the outer side of the valve spring. Through the above structure, the design of the rotation stopping rod and the locking rod realizes rapid and lossless disassembly and assembly through the first electromagnet, the second electromagnet and the clamping plate structure, the operation is simple and convenient, the versatility is strong, the device can be repeatedly used, the detection efficiency and accuracy are improved, and the device can be better suitable for a valve spring stress test scene needing disassembly and assembly.

The buffering mechanism of the engine braking rocker arm comprises an elastic body, the elastic body is arranged between the rocker arm and a rocker arm shaft, the elastic body abuts against the rocker arm and the rocker arm shaft, and elastic deformation of the elastic body exerts acting force between the rocker arm and the rocker arm shaft. When the rocker arm is driven to move, the motion resistance of the rocker arm on the rocker arm shaft is caused, the motion resistance keeps the rocker arm in two non-collision positions on the rocker arm shaft, and in the two non-collision positions, one end of the rocker arm avoids driving of an engine cam, and the other end of the rocker arm avoids acting with an engine valve. The rocker arm does not move in the ignition period of an engine, mechanism flying-off, friction and oil consumption are eliminated, and the use frequency is greatly reduced.

The utility model discloses an engine valve detection clamping device, which belongs to the technical field of valve detection, and comprises a three-jaw chuck which is arranged on a roundness measuring instrument workbench and can rotate, and the three-jaw chuck detachably clamps a vertical connecting rod. The top end of the connecting rod is detachably connected with a suction cup coaxial with the connecting rod, and the diameter of the opening end of the suction cup is smaller than that of the bottom end of the valve head. As the diameter of the opening end of the sucker is smaller than that of the bottom end of the valve head, when the valve is adsorbed on the sucker, part of the bottom end of the valve head is still exposed out of the sucker, and jumping detection can be conveniently carried out on the bottom surface of the valve; and meanwhile, the air valve is adsorbed on the suction cup, so that the air valve is clamped on the roundness measuring instrument, the top perpendicularity and the rod cylindricity of the air valve can be conveniently detected, the purpose of detecting the top perpendicularity, the rod cylindricity and the bottom surface run-out of the air valve through one-time clamping is achieved, and the working efficiency is improved.

The utility model relates to the technical field of automobile repair, in particular to a pneumatic engine valve grinder which comprises a suction cup movably installed on the grinder, a handheld supporting mechanism for stably grinding a valve is arranged on the grinder, and a protection mechanism for protecting the telescopic end of the grinder is arranged on the grinder. The handheld supporting device is arranged, in the using process of the grinder, the hand of a worker can be protected while the grinder is held by hand, the situation that in the grinding process, generated chippings splash and hurt the hand is avoided, the grinder can be stably supported, and the grinding efficiency is improved. According to the grinding device for the air valve, the grinding stability of the air valve is improved, the grinding efficiency is improved, the protective mechanism is arranged, when the grinding device is not used, the telescopic end of the grinding device can be completely covered, so that the telescopic end of the grinding device is protected, damage caused by collision in the storage process is avoided, and the grinding device has certain practical performance.

The utility model discloses an aviation piston engine valve guide sleeve sediment removing device which comprises a driving shaft, a plurality of drainage blades are installed on the outer side of the driving shaft, a plurality of carrier plates and transparent guide pipes are arranged on the outer side of the driving shaft, a plurality of cleaning brush wires are installed on the outer sides of the carrier plates, and the transparent guide pipes are arranged on the outer sides of the cleaning brush wires. A lower connecting block and an upper connecting block are mounted between the carrier plate and the driving shaft, a cooling channel is formed in the carrier plate, circulating cooling liquid is introduced into the cooling channel, and one end of each cleaning brush wire extends into the corresponding cooling channel; one section of the cleaning brush wire enters the cooling channel, so that heat generated during friction between the cleaning brush wire and the guide sleeve can be transmitted to the cooling liquid in the cooling channel in real time, and heat generated during friction between the cleaning brush wire and the inner wall of the guide sleeve can be absorbed in real time through flowing of the circulating cooling liquid in the cooling channel; thermal deformation of the guide sleeve caused by local overheating is avoided, and the problem of thermal damage caused by traditional mechanical cleaning is solved.

The application provides an engine valve train detection method, a hydraulic tappet device and electronic equipment. The method comprises the following steps: collecting a first torque set of a flywheel end of an engine when a hydraulic tappet is installed in the valve train of the engine, wherein the first torque set comprises torques collected under multiple engine operating conditions; collecting a second torque set of the flywheel end of the engine when a hydraulic tappet device is installed in the valve train of the engine after the hydraulic tappet is removed, wherein the valve train of the engine stops running after the hydraulic tappet is removed, the hydraulic tappet device is used to block an oil passage hole of a cylinder head oil passage of the engine, and the second torque set comprises torques collected under multiple engine operating conditions; and obtaining a detection result representing friction loss of the valve train of the engine according to a difference between torques under the same engine operating condition in the first torque set and the second torque set. Thus, the problem that the friction loss of the valve train of an entity cannot be detected can be solved.

The application provides a liquid rocket engine model use method and system suitable for one-dimensional system simulation, and comprises the following steps: a liquid rocket engine model establishment step: establishing a liquid path orifice model and a gas path orifice model; making the liquid path orifice model equivalent to the flow characteristics of a liquid rocket engine valve and a head part, and making the gas path orifice model equivalent to the flow characteristics in a liquid rocket engine nozzle; a liquid rocket engine model running step: running the established liquid rocket engine model to perform dynamic calculation of the liquid rocket engine. The application uses simple liquid path orifice models and gas path orifice models to respectively equivalent to the flow characteristics of an engine valve and a head part and the flow characteristics in a nozzle, thereby greatly reducing the difficulty of one-dimensional modeling of the engine.

A system and method for controlling an engine valve in an internal combustion engine is disclosed. The system includes a valve spring supported on a spring base biasing an engine valve toward a closed position, and a camshaft having a center cam lobe and first and second outer cam lobes. In some embodiments, a center rocker arm is engaged with the center cam lobe and a valve stem of the engine valve, such that rotation of the camshaft displaces the engine valve to an open position. Further, in some embodiments, a lower rocker arm is engaged with the first and second outer cam lobes and contacts the spring base. The outer cam lobes are phased to displace the spring base as the valve opens and closes, thereby reducing valve spring compression during valve opening.

A rocker arm assembly (200) is rotatable about a rocker arm shaft (130) and includes a first portion and a second portion. The first portion is configured to receive a valve lift profile. The second portion is configured to operatively engage with one or more valves. The rocker arm assembly further includes a lost motion assembly (210) configured to absorb at least a portion of the valve lift profile; and a switchable unit (230) having an actuator assembly and a plunger (232) disposed within the plunger bore. Further, the switchable unit includes a plunger securing assembly (235).

An engine rocker arm includes a piston bore and a hydraulic drive mechanism, the hydraulic drive mechanism including a hydraulic piston, an oil valve mechanism, and an oil unloading mechanism, the hydraulic piston disposed in and movable within the piston bore, the engine rocker arm selectively transmitting motion of an engine cam to an engine valve at a location of the piston bore via the hydraulic piston; the hydraulic piston having an oil valve mechanism and an oil passage disposed therein, the oil passage disposed below the oil valve mechanism, an upper side of the oil valve mechanism being a high pressure oil chamber, the oil valve mechanism controlling flow of oil between the oil passage and the high pressure oil chamber; the oil unloading mechanism disposed within the hydraulic piston and below the oil valve mechanism, the oil unloading mechanism configured to unload oil from the high pressure oil chamber.

A dispenser, method and system using a pressurized canister of cleaner for removing deposits from GDI engine valves including components such as an external housing having an actuator including a valve for engaging a valve stem of the canister, a button trigger for activation of the valve and valve stem by a user, and a trigger return spring, to bias the button trigger out of engagement with the valve, an outlet for attachment to a flexible delivery conduit having a support wire guide, where the delivery conduit is wrapped around the external housing during storage, and during operation by a single individual user extends for a length from the vehicle driver seat through an open window or door, under the open hood for engagement with the vehicle engine intake manifold supported on a delivery conduit support clip, to enable one handed operation of the system by a single user.

The application discloses a valve driving mechanism with a closed cylinder function, and belongs to the technical field of gasoline engine valve distribution, and solves multiple defects of the prior similar mechanism. The valve driving mechanism comprises a cam, a split tappet, a main rocker arm, a secondary rocker arm and a hydraulic actuator, the tappet is provided with a lock pin type clutch structure, the main rocker arm is mechanically driven by the cam, and the secondary rocker arm is independently controlled by the hydraulic actuator. In a conventional mode, the lock pin locks the inner core and the outer cylinder of the tappet, the cam normally drives the valve through the main rocker arm, and the secondary rocker arm does not interfere with the work; in a closed cylinder mode, the hydraulic unlocking tappet clutch cuts off the mechanical transmission, the hydraulic actuator drives the secondary rocker arm to press the valve rod, the valve is locked to realize cylinder stopping, and the valve can also be adjusted in a small amount as required. The application relies on the original cam mechanical structure, only adds the split tappet and the secondary rocker arm assembly, the mechanical driving reliability is high in a conventional working condition, the cylinder intake and exhaust can be cut off in a closed cylinder working condition, the loss is greatly reduced, and the fuel economy is improved.