245 results about "Engine valve" patented technology

The invention discloses a rocker arm assembly and an engine valve mechanism, and relates to the technical field of engines. The rocker arm assembly comprises a rocker arm, a first elastic piece, a sealing piece, an ejection unit, a piston and a transmission unit. A first cavity, a second cavity and a third cavity which are sequentially communicated are formed in the rocker arm, the ejection unit is installed in the first cavity, the first elastic piece and the sealing piece are both installed in the second cavity, the first elastic piece is connected with the sealing piece, the sealing piece is used for separating the first cavity from the second cavity, and a first oil channel is formed in the rocker arm. The first oil duct is communicated with the first cavity, the piston is installed in the third cavity and connected with the transmission unit, and the transmission unit is used for being matched with the delay cam. The rocker arm assembly is simple in structure, the number of parts is small, the occupied space is small, the production cost and the assembly cost can be effectively reduced, and economic benefits are improved.

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.

When an engine controller determines that shutdown of an internal combustion engine has been requested, control of the engine shutdown of the internal combustion engine is effected, the internal combustion engine including a plurality of cylinders, and for each of the plurality of cylinders, a hydraulically controlled lost motion component is operatively connected to an engine valve corresponding to that cylinder. In response to the shutdown request, the engine controller initiates or continues a cylinder deactivation operation for each of at least one cylinder of the plurality of cylinders. Initiating or continuing the cylinder deactivation operation for each of the at least one cylinder includes: for an input of the hydraulically controlled lost motion component for each of at least one engine valve corresponding to the cylinder, the input is operated to provide the cylinder deactivation operation for a duration of at least long enough to complete shutdown of the internal combustion engine.

The utility model provides a gas detection tool for processing an engine valve chamber cover, which relates to the technical field of gas detection tools and comprises a water storage box, a guide rod is slidably mounted on the inner surface of the water storage box in a penetrating manner, a chassis is fixedly mounted at the lower end of the guide rod, and a reset spring is fixedly mounted on the upper surface of the chassis. The top end of the reset spring is arranged on the lower surface of the water storage box, the upper end of the guide rod is fixedly provided with a supporting plate, and the upper surface of the supporting plate is provided with a tool plate through a positioning assembly. The cover cap is placed on the upper surface of the supporting plate, and the output end of the hydraulic cylinder stretches out and draws back to drive the pressing plate to move downwards, so that the pressing plate is pressed on the upper surface of the cover cap; and meanwhile, the cover cap and the tool plate can be driven to move downwards at the same time, the cover cap is arranged in the water source, at the moment, the air pump works, the space between the cover cap and the tool plate is inflated, and when the cover cap leaks air, bubbles can appear on the water source, so that workers can observe conveniently.

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 invention discloses a method for testing carbon deposition of a light automobile valve burning CNG on a rotary drum, and belongs to the technical field of whole automobile testing. The method comprises the following steps: S1, setting test parameters; s2, vehicle inspection; s3, starting a test; s4, checking the engine; s5, testing the vehicle; and S6, the steps S3-S5 are repeated until valve carbon deposition occurs in the engine, engine ECU electronic injection data are adjusted according to the emission and gas consumption test results and the acceleration test results, so that generation of the valve carbon deposition of the engine is reduced, and generation of the valve carbon deposition of the engine in the running process of an automobile combusting CNG is reduced as much as possible while the economic performance and the dynamic performance are guaranteed. According to the invention, the durability test is carried out on the drum of the CNG-fired vehicle, the carbon deposition condition of the valve is checked in stages, and the emission and gas consumption test and acceleration test are carried out on the tested vehicle. And by continuously correcting and adjusting electronic injection data of the ECU of the engine, carbon deposition of the valve of the engine is reduced, so that a series of problems of power reduction, gas consumption increase, even mechanical damage and the like of the CNG vehicle are reduced.

The invention aims to provide a dual-mode electromagnetic mechanical fully variable valve mechanism, and belongs to the field of engine valve devices. Comprising an electromagnetic driving device and a mechanical transmission device. The electromagnetic driving device can swing in a reciprocating mode and rotate in a whole-circle mode, when the electromagnetic driving device rotates in the whole-circle mode, an air valve molded line is similar to an air valve molded line of a cam shaft type air distribution mechanism, at the moment, frequent acceleration and deceleration of the electromagnetic driving device are not needed, and driving power consumption is low. When the electromagnetic driving device swings in a reciprocating mode, the molded line of the air valve is a trapezoid-like curve, and the maximum lift of the air valve is changed by adjusting the reciprocating swinging angle of the electromagnetic driving device. The fully-variable valve mechanism has the advantages of high response speed of electromagnetic drive and high reliability of a mechanical structure, and through cooperative work of the two modes, power consumption of the fully-variable valve mechanism is reduced while variable valve parameters of an engine are achieved.

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 present invention discloses a valve lock clamp assembly pressure plate device for an automatic deviation-correcting spring, which relates to the technical field of engine valve lock clamp assembly. The device comprises: a lower pressure plate, on which a limiting groove is provided, which corresponds one-to-one with the valve stem on the cylinder; and a mounting groove, which is provided on the other side of the lower pressure plate and is correspondingly connected to the limiting groove; wherein, when the lower pressure plate is in contact with the cylinder, the valve spring sleeved on the outside of the valve stem is located in the limiting groove. The valve lock clamp assembly pressure plate device for an automatic deviation-correcting spring described in the present invention uses a lower pressure plate with a limiting groove to squeeze the valve spring, thereby confining the valve spring to a small space. Therefore, it effectively solves the technical problem that the valve spring is easily misaligned when installing the engine valve lock clamp, thereby achieving accurate press-fitting of the valve spring, eliminating the press-fitting failure that all springs cannot be pressed into place at one time, and effectively improving installation efficiency.

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.

To provide a V-type eight-cylinder engine capable of suppressing lateral vibration of 1.5-order rotation without disturbing engine balancing design.SOLUTION: The V-type eight-cylinder engine includes eight cylinders arranged separately on left and right banks LB, RB, and the cylinders of each bank LB, RB are fired at unequal intervals. In the V-type eight-cylinder engine, left and right fuel pumps 9L, 9R provided on the left and right banks LB, RB are installed at an angle θp wider than an angle between engine valves arranged on both sides of the left and right banks LB, RB.SELECTED DRAWING: Figure 2

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.

A rocker arm assembly capable of switchably deactivating a roller assembly includes a valve end and a cam end having first and second roller assemblies, and a latching mechanism. The latching mechanism includes rocker body pins and roller body pins. The rocker body pins include first and second end pins and a connection pin, each pin provided within a rocker arm body along a latching axis. The roller body pins include first and second locking pins, each roller body pin provided within a respective roller assembly. In a first latching mode, the first roller assembly is deactivated and the second roller assembly is activated. In a second latching mode, the second roller assembly is deactivated and the first roller assembly is activated.

The present invention discloses an assembly tooling assembly for an engine valve lock clamp, comprising a frame and a cylinder head valve lock clamp press plate. The frame is mounted on a cylinder head valve lock clamp press machine and positioned above a cylinder head conveyor roller conveyor, and includes press-fitting working holes. The cylinder head valve lock clamp press plate is mounted on the lower surface of the frame and includes multiple valve press-fitting holes. The multiple valve press-fitting holes are located within the press-fitting working holes, and the cylinder head valve lock clamp press machine is capable of driving the frame and the cylinder head valve lock clamp press plate toward or away from the cylinder head conveyor roller conveyor. The assembly tooling assembly for the engine valve lock clamp of the present invention can meet the needs for rapid assembly of dual-valve or multi-valve cylinder head valve lock clamps for multiple models and varieties.

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 invention belongs to the technical field of engine valves, and particularly relates to an engine valve seepage detection device which comprises supporting rods, mounting tables are fixedly mounted on the upper portions of every two supporting rods, limiting supporting shells are fixedly mounted on the upper portions of the mounting tables, and a valve moving mechanism is arranged between the two limiting supporting shells. And a valve detection mechanism is arranged at the upper part of the mounting table. According to the engine valve seepage detection device, seepage detection is carried out on an engine valve through colored gas by arranging the valve detection mechanism, the valve is automatically placed in the valve detection mechanism by arranging the valve moving mechanism, and a detection camera of the valve detection mechanism is aligned with the lower part of a detection cylinder; and shooting the outlet of the detection cylinder to detect whether colored gas leaks through the outlet of the detection cylinder, if leakage occurs, the air tightness of the surface valve body cannot meet the requirement, and if no gas leakage is detected, the air tightness of the valve body is qualified.

The present application relates to an engine valve drive device and a vehicle, wherein the engine valve drive device includes a rocker arm capable of rotating around a rocker arm shaft, a transmission unit, a clutch unit, a drive member and a control unit. The rocker arm includes a first mounting portion and a second mounting portion arranged opposite to each other, the valve is arranged in the first mounting portion, and the transmission unit and the clutch unit are arranged in the second mounting portion. The drive member is used to drive the transmission unit to move relative to the second mounting portion. The clutch unit includes an engaged position and a disengaged position, and the control unit is used to control the clutch unit to switch between the disengaged position and the engaged position. When the clutch unit is in the engaged position, the drive member can drive the rocker arm to swing around the rocker arm shaft and drive the valve to achieve engine cylinder deactivation, which can effectively reduce fuel consumption. The structure is simple, which can reduce the manufacturing cost of the vehicle and free up space.

The utility model belongs to the technical field of engine processing, and particularly relates to an engine valve surface chromium plating hanger which comprises an anode cylinder, a valve clamp and a shielding sleeve, and a conductive copper bar is arranged on the side wall of the anode cylinder; the valve clamp comprises a valve seat and a pressing mechanism, and two limiting rods are arranged on the outer side wall of the valve seat; the pressing mechanism comprises a clamping block, a clamping groove is formed in the clamping block, a sliding groove is formed in the side wall of the clamping groove, a limiting groove is formed in the side wall of the sliding groove, a positioning rod penetrates through the bottom face of the clamping groove, a pressing head is arranged at one end of the positioning rod, a limiting nut is arranged at the other end of the positioning rod, the positioning rod is sleeved with a pressing spring, one end of the pressing spring abuts against the pressing head, the other end of the pressing spring abuts against the clamping groove, and a conductive support is arranged at the top end of the positioning rod. The shielding sleeve sleeves the tail end of the valve. The tail end of the valve penetrates through the valve seat and then is sleeved with the shielding sleeve, the valve seat is clamped in the clamping groove, the limiting rod slides along the sliding groove, the valve seat is rotated to enable the limiting rod to be clamped in the limiting groove, the positioning rod abuts against the head of the valve under the action of the compression spring, clamping and fixing of the valve are completed, and the valve clamp is simple in structure and convenient to operate.