WO2019127188A1 - 一种气门摇臂总成、可变配气机构及发动机 - Google Patents

一种气门摇臂总成、可变配气机构及发动机 Download PDF

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Publication number
WO2019127188A1
WO2019127188A1 PCT/CN2017/119260 CN2017119260W WO2019127188A1 WO 2019127188 A1 WO2019127188 A1 WO 2019127188A1 CN 2017119260 W CN2017119260 W CN 2017119260W WO 2019127188 A1 WO2019127188 A1 WO 2019127188A1
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WO
WIPO (PCT)
Prior art keywords
valve
rocker arm
oil
passage
oil inlet
Prior art date
Application number
PCT/CN2017/119260
Other languages
English (en)
French (fr)
Inventor
战强
朱纪宾
李志强
Original Assignee
潍柴动力股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 潍柴动力股份有限公司 filed Critical 潍柴动力股份有限公司
Priority to PCT/CN2017/119260 priority Critical patent/WO2019127188A1/zh
Priority to US16/753,844 priority patent/US11352961B2/en
Priority to EP17936586.1A priority patent/EP3734029B1/en
Publication of WO2019127188A1 publication Critical patent/WO2019127188A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0223—Variable control of the intake valves only
    • F02D13/0234—Variable control of the intake valves only changing the valve timing only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2416—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device attached to an articulated rocker
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0031—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of tappet or pushrod length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L2001/2444—Details relating to the hydraulic feeding circuit, e.g. lifter oil manifold assembly [LOMA]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L2013/10—Auxiliary actuators for variable valve timing
    • F01L2013/105—Hydraulic motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0223—Variable control of the intake valves only
    • F02D13/0226—Variable control of the intake valves only changing valve lift or valve lift and timing
    • F02D13/023—Variable control of the intake valves only changing valve lift or valve lift and timing the change of valve timing is caused by the change in valve lift, i.e. both valve lift and timing are functionally related

Definitions

  • the present invention relates to the field of engine technology, and in particular, to a valve rocker arm assembly. It also relates to a valve train including the valve rocker assembly and an engine including the valve train.
  • the engine valve train is the key mechanism for controlling engine intake and exhaust.
  • the valve train mainly includes camshaft, rocker arm, rocker shaft, rocker seat, valve, valve spring and other parts.
  • the valve is opened and closed by the camshaft.
  • the rocker arm is mounted on the rocker arm seat through the rocker arm shaft, one end is driven by the tappet through the camshaft, and the other end is mounted on the valve stem and the valve spring acts together to control the opening and closing of the valve.
  • valve timing directly affects the engine's intake and exhaust performance, which plays an important role in the quality of the combustion process.
  • the valve phase should change with the speed and load.
  • Variable valve timing can meet different engine timing requirements at different speeds and loads, thus improving engine performance and emissions, better meeting engine dynamics at high and low speeds, high and small loads, and economy. Sex and emission requirements.
  • the existing variable valve driving mechanism is an electro-hydraulic control variable valve mechanism: that is, a plunger is arranged on the original engine air distribution mechanism, and the plunger lift is superimposed on the original valve lift to realize the valve timing or lift. change.
  • the pressure oil in and out of the plunger chamber is controlled in real time by a high-speed, large-flow solenoid valve. Each time the engine cylinders work, the pressure oil enters and exits the plunger chamber once.
  • the electro-hydraulic control variable valve mechanism has large changes to the original engine and has a complicated structure. Since the cylinders of the engine work in turn, it is necessary to separately provide electromagnetic control valves for each cylinder, which has high cost, high engine speed, and requires an electromagnetic control valve. The switch has a fast response, and the control valve must meet the flow requirement. It is difficult to manufacture. Each cylinder is equipped with an electromagnetic control valve and has strict timing requirements, which puts higher requirements on the control system.
  • an object of the present invention is to provide a valve rocker arm assembly for realizing variable valve timing, simplifying the structure of the valve train mechanism, and improving operational reliability.
  • Another object of the present invention is to provide a variable valve train including the valve rocker arm assembly to achieve variable valve timing, simplify the structure of the valve train, and improve operational reliability.
  • the present invention provides the following technical solutions:
  • a valve rocker arm assembly comprising:
  • rocker shaft wherein the rocker shaft is provided with an oil drain passage, an oil return passage and a first oil passage, and the oil drain passage communicates with the oil return groove through the first oil passage;
  • a second rocker arm is rotatably connected to the rocker arm shaft, wherein the first rocker arm and the second rocker arm are located in a same plane of rotation, and the second rocker arm is provided with a piston cavity and an oil inlet passage a draining oil passage and a piston, the piston slidingly disposed in the piston chamber, the protruding end of the piston for extending the piston chamber and pushing the first rocker arm into contact with the oil
  • One end of the oil passage and the drain oil passage are in communication with a space of the piston chamber at a bottom of the piston, and the other end of the oil inlet passage is connected with the oil inlet hose, the drain oil passage
  • the other end of the same and the oil return groove alternately open and close with the swing of the second rocker arm;
  • a single-pass device disposed in the oil inlet passage and/or the oil inlet hose, wherein an oil guiding direction of the one-way communication device is directed to the piston chamber;
  • a control valve is connected to the drain passage for controlling the opening and closing of the drain passage.
  • control valve is an electromagnetic on-off valve.
  • the operating mode of the valve rocker arm assembly includes a valve normal closing mode and a valve early closing mode, and when in the valve normal closing mode, the control valve is closed; The control valve opens when in the valve early off mode.
  • the one-way communication device is a one-way valve.
  • an oil inlet pipe is disposed at an oil inlet portion of the oil inlet passage, and the oil inlet hose passes through the oil inlet pipe and the oil inlet pipe Connected.
  • the present application also provides a variable valve train comprising a valve rocker arm, a camshaft and a valve, the valve rocker arm being the valve rocker arm assembly according to any of the above, the valve rocker arm assembly One end of the first rocker arm is coupled to the valve drive, and one end of the second rocker arm of the valve rocker arm assembly is drivingly coupled to the camshaft.
  • one end of the first rocker arm is coupled to the valve drive through a valve bridge and a valve spring.
  • one end of the second rocker arm is drivingly coupled to the camshaft via a tappet.
  • the valve is an intake valve.
  • the present application also provides an engine including a valve train, the valve train being the variable valve train of any of the above.
  • the rocker arm is divided into a first rocker arm and a second rocker arm, and the first rocker arm and the second rocker arm are rotatably connected to the rocker arm shaft, and the rocker arm shaft is provided with a drain
  • the oil passage, the oil return groove and the first oil passage, the oil drain passage is connected to the oil return passage through the first oil passage;
  • the second rocker arm is provided with a piston, a piston chamber, an oil inlet passage and a drain oil passage, and the piston The projecting end can extend out of the piston chamber and push the first rocker arm into contact.
  • One end of the oil inlet passage and the drain oil passage are connected to a space of the piston chamber at the bottom of the piston, and the other end of the oil inlet passage is connected with the oil inlet hose, and the other end of the oil drain passage is connected with the oil return groove
  • the swinging of the second rocker arm alternately turns on and off; the oil inlet passage and/or the oil inlet hose are provided with a single-way device, the oil guiding direction is directed to the piston chamber; and the oil drain passage is provided with a control valve.
  • the oil enters the oil inlet hose from the main oil passage of the engine, enters the piston chamber through the check valve and the oil inlet passage, and pushes the protruding end of the piston to extend.
  • the oil return groove and the drain oil passage are connected, and since the oil inlet passage and/or the oil inlet hose are provided with a one-way communication device, The oil in the piston chamber can only enter the drain passage through the drain oil passage, the return oil tank and the first oil passage.
  • valve rocker arm assembly divides the rocker arm into two sections and adds a piston to the rocker arm, and realizes the change of the length of the rocker arm by the extension and retraction of the piston, and realizes the valve closing timing by the mechanical structure or Early shutdown improves operational reliability.
  • variable valve train and the engine provided by the present application all adopt the valve rocker arm assembly of the present application, thereby simplifying the structure and improving the operational reliability while realizing the variable valve timing.
  • FIG. 1 is a schematic cross-sectional structural view of a valve rocker arm assembly according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a valve profile of a valve rocker arm assembly according to an embodiment of the present invention.
  • 1 is a piston
  • 2 is a piston chamber
  • 3 is a drain oil passage
  • 4 is an oil inlet passage
  • 5 is a single-way passage device
  • 6 is a second rocker arm
  • 7 is a first rocker arm
  • 8 is a first rocker arm
  • 8 is a oil return groove.
  • 9 is the first oil passage
  • 10 is the oil drain passage
  • 11 is the rocker shaft
  • 12 is the oil inlet pipe
  • 13 is the oil inlet hose.
  • the core of the invention is to provide a valve rocker arm assembly, which realizes variable valve timing, simplifies the structure of the valve train mechanism, and improves the operation reliability.
  • the invention also provides a variable valve train comprising the valve rocker arm assembly, which realizes variable valve timing, simplifies the structure of the valve train mechanism, and improves the operation reliability.
  • the invention also provides an engine including the variable valve train, which realizes variable valve timing, simplifies the structure of the valve train mechanism, and improves the operation reliability.
  • an embodiment of the present invention provides a valve rocker arm assembly including an oil inlet hose 13, a rocker shaft 11, a first rocker arm 7, a second rocker arm 6, and a single guide.
  • the first rocker arm 7 is rotatably coupled to the rocker arm shaft 11; the second rocker arm 6 is rotatably coupled to the rocker arm shaft 11, and the first rocker arm 7 and the second rocker arm 6 are located in the same plane of rotation, that is, the rocker arm is divided into two segment.
  • the second rocker arm 6 is provided with a piston chamber 2, an oil inlet passage 4, a drain oil passage 3 and a piston 1, wherein the piston 1 is slidably disposed in the piston chamber 2, and the extended end of the piston 1 can extend out of the piston chamber 2 and push-contact with the first rocker arm 7, that is, the second rocker arm 6 can push the first rocker arm 7 to rotate through the extended end of the piston 1; one end of the oil inlet oil passage 4 and the drain oil passage 3 and the piston chamber 2 is located in the space at the bottom of the piston 1, and the other end of the oil inlet passage 4 is connected to the oil inlet hose 13.
  • the other end of the oil draining oil passage 3 and the oil returning groove 8 are alternately connected with the swing of the second rocker arm 6. Broken.
  • the single-way conduction device 5 is disposed in the oil inlet passage 4 and/or the oil inlet hose 13, and the oil guiding direction of the one-way conduction device 5 is directed to the piston chamber 2, and only the oil is allowed to pass from the oil inlet hose 13 and the oil inlet oil.
  • the passage 4 enters the piston chamber 2, and the oil in the piston chamber 2 is not allowed to flow back into the intake oil passage 4 and the oil inlet hose 13.
  • a control valve is coupled to the drain passage 10 for controlling the opening and closing of the drain passage 10.
  • the valve rocker arm assembly has two working modes, a valve normal closing mode and a valve early closing mode.
  • the control valve is opened, that is, the drain passage 10 is turned on;
  • the control valve is closed, that is, the drain passage 10 is not conducting. .
  • the initial position of the second rocker arm 6 is such that the drain oil passage 3 and the oil return tank 8 are not in communication.
  • the oil enters the oil from the engine main oil passage.
  • the hose 13 enters the piston chamber 2 via the oil inlet passage 4, and the protruding end of the piston 1 is extended.
  • the extended end of the piston 1 is in contact with the first rocker arm 7, and the second rocker arm 6 is extended by the piston 1.
  • the end pushes the first rocker arm 7 to rotate about the rocker arm shaft 11, and as the second rocker arm 6 and the first rocker arm 7 rotate about the rocker arm shaft 11, the oil return groove 8 and the drain oil passage 3 are connected, due to The oil passage 4 and/or the oil inlet hose 13 are provided with a unidirectional conduction device 5, so that the oil in the piston chamber 2 can only enter the drain through the drain oil passage 3, the return oil tank 8 and the first oil passage 9.
  • the control valve is opened and the oil drain passage 10 is turned on. Therefore, the oil is completely discharged, the piston 1 is retracted, and the second rocker arm 6 no longer pushes the first rocker arm 7 to rotate, which is equivalent to shaking.
  • the length of the arm is shortened, and the valve is operated according to the valve type line 1 in Fig. 2 to realize early closing of the valve.
  • the initial position of the second rocker arm 6 is such that the drain oil passage 3 and the oil returning tank 8 are not in communication.
  • the oil enters the oil inlet hose from the engine main oil passage 13 , entering the piston chamber 2 through the oil inlet passage 4, pushing the protruding end of the piston 1 to extend, the protruding end of the piston 1 is in contact with the first rocker arm 7, and the second rocker arm 6 pushes the first rocker arm 7 to wobble together
  • the arm shaft 11 rotates, and as the second rocker arm 6 and the first rocker arm 7 rotate around the rocker arm shaft 11, the oil return groove 8 and the drain oil passage 3 are turned on, due to the oil inlet passage 4 and/or the oil inlet.
  • the tube 13 is provided with a unidirectional conduction device 5, so that the oil in the piston chamber 2 can only enter the drain passage 10 through the drain oil passage 3, the return oil tank 8 and the first oil passage 9, due to the operation mode, the control The valve is closed, the oil drain passage 10 is not conductive, therefore, the oil can not be discharged, the piston 1 remains in the original position, and the second rocker arm 6 continues to push the first rocker arm 7 to rotate, which is equivalent to the increase of the length of the rocker arm, and the valve according to FIG. 2
  • the valve line 2 in the middle action realizes the normal closing of the valve.
  • valve rocker arm assembly divides the rocker arm into two sections and adds a piston 1 to the rocker arm, and through the oil passage design, the length of the rocker arm is changed by the extension and retraction of the piston 1, through the mechanical structure.
  • the valve closing timing is unchanged or early closed, and the operation reliability is improved compared with the existing variable valve timing through the complicated electromagnetic control system, and the engine is not required to be greatly modified, and the structure is simple and reliable.
  • control valve is preferably an electromagnetic on-off valve.
  • it can also be an electric valve, a hydraulic valve, etc., and the electromagnetic on-off valve can realize quick response and more precise control.
  • the one-way conduction device 5 is a one-way valve, and the oil guiding direction of the one-way valve is directed to the piston chamber 2.
  • the one-way conduction device 5 can also be a control valve. When the oil is introduced, the control valve is opened. When the second rocker arm 6 is rotated to the drain oil passage 3 and the oil returning groove 8 is connected, the control valve is closed, and the same can be realized. Guide through. It is not as simple as a one-way valve and has high reliability.
  • the oil inlet pipe 12 is provided at the oil inlet portion of the oil inlet passage 4, and the oil inlet hose 13 is always in communication with the oil inlet oil passage 4 through the oil inlet pipe 12.
  • the oil inlet hose 13 can be deformed following the swing of the second rocker arm 6, and the oil inlet connecting pipe 12 is provided to facilitate the connection of the oil inlet hose 13 and the oil inlet oil passage 4.
  • the oil inlet pipe 12 is fixed to the inlet of the oil inlet pipe 4 by welding or screwing.
  • the oil inlet hose 13 is sleeved on the oil inlet connecting pipe 12.
  • oil inlet hose 13 can also be directly connected to the inlet of the oil inlet oil passage 4, and can be fixed by bonding or the like.
  • the embodiment of the present invention further provides a variable valve train, including a valve rocker arm, a camshaft and a valve, wherein the valve rocker arm is implemented as described above.
  • a variable valve train including a valve rocker arm, a camshaft and a valve, wherein the valve rocker arm is implemented as described above.
  • one end of the first rocker arm 7 of the valve rocker arm assembly is connected to the valve drive, and one end of the second rocker arm 6 of the valve rocker arm assembly is drivingly coupled to the camshaft.
  • the cam shaft rotates to drive the second rocker arm 6 to rotate about the rocker arm shaft 11, pushing the first rocker arm 7 to rotate, and one end of the first rocker arm 7 drives the opening and closing of the valve. Since the valve rocker arm assembly of the present application is adopted, the variable valve timing can be realized, and the valve is closed early or normally closed, and the structure is simple and the operation is reliable.
  • one end of the first rocker arm 7 is connected to the valve drive through a valve bridge and a valve spring.
  • the valves are paired in pairs, and therefore, the opening and closing of the two valves are simultaneously driven by the valve bridge. shut down.
  • the valve spring acts as a resilient reset.
  • one end of the second rocker arm 6 is connected to the camshaft through a tappet.
  • the rocker arm needs to be connected to the camshaft through the tappet.
  • one end of the second rocker arm 6 is directly in driving contact with the camshaft.
  • the valve is preferably an intake valve, and the driving connection of the valve rocker arm assembly and the intake valve realizes early closing or normal closing of the intake valve, and the opening timing of the intake valve does not change.
  • the valve can also be an exhaust valve to achieve early closing or normal closing of the exhaust valve.
  • an embodiment of the present invention further provides an engine including a valve train, wherein the valve train is a variable valve as described in any of the above embodiments. mechanism. Since the variable gas distribution mechanism in the present application is adopted, the variable valve timing can be realized, and the valve is closed early or closed normally, and the structure is simple and the operation is reliable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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Abstract

一种气门摇臂总成、可变配气机构及发动机，其中，气门摇臂总成包括：进油软管(13)；摇臂轴(11)，摇臂轴(11)中设置有泄油通道(10)、回油槽(8)和第一油路(9)，泄油通道(10)通过第一油路(9)与回油槽(8)连通；第一摇臂(7)和第二摇臂(6)，均转动连接于摇臂轴(11)上，第二摇臂(6)上设置有活塞腔(2)、进油油路(4)、泄油油路(3)和活塞(1)，活塞(1)的伸出端用于伸出活塞腔(2)并与第一摇臂(7)推动接触，进油油路(4)和泄油油路(3)的一端均与活塞腔(2)连通，进油油路(4)与进油软管(13)连接，泄油油路(3)与回油槽(8)之间随着第二摇臂(6)的摆动交替通断；进油油路(4)和/或进油软管(13)中设置有单向导通装置(5)；控制阀，与泄油通道(10)连接。该气门摇臂总成将摇臂分成两段，摇臂上增加一个活塞(1)，通过摇臂长度的变化，实现气门关闭定时不变或早关。

Description

一种气门摇臂总成、可变配气机构及发动机 技术领域
本发明涉及发动机技术领域，特别涉及一种气门摇臂总成。还涉及一种包含该气门摇臂总成的配气机构以及包含该配气机构的发动机。
背景技术
发动机配气机构是控制发动机进排气的关键机构，配气机构主要包括凸轮轴、摇臂、摇臂轴、摇臂座、气门、气门弹簧等零件，气门的开启和关闭是由凸轮轴、挺杆和摇臂配合完成的，摇臂通过摇臂轴安装在摇臂座上，一端通过凸轮轴经挺杆驱动，另一端顶在气门杆上和气门弹簧一起作用控制气门的开合。
配气相位直接影响发动机的进排气性能，对燃烧过程的优劣有重要作用，为了获得更好的发动机性能，配气相位应随着转速和负荷的变化而变化。可变气门定时可以满足发动机在不同转速和负荷下对气门定时的不同需求，从而改善发动机性能和排放，更好地满足发动机在高转速与低转速、大负荷与小负荷时的动力性、经济性和排放要求。
现有的一种可变气门驱动机构为电液控制可变气门机构：即在原发动机配气机构上设置一个柱塞，将柱塞升程叠加在原气门升程上，实现气门定时或升程可变。柱塞腔内的压力油进出由高速、大流量电磁阀实时控制，发动机各缸每工作一个循环，压力油进出柱塞腔一次。该电液控制可变气门机构对原有发动机改动比较大，结构复杂，由于发动机各缸轮流工作，所以需要对各缸分别设置电磁控制阀，成本高，发动机的转速很高，要求电磁控制阀的开关响应快，且控制阀必须满足流量要求，制造难度大，各缸分别设置电磁控制阀并有严格的时序要求，对控制系统提出了更高要求。
发明内容
有鉴于此，本发明的目的在于提供一种气门摇臂总成，以实现可变气门定时，简化配气机构的结构，提高运行可靠性。
本发明的另一个目的在于提供一种包含该气门摇臂总成的可变配气机构，以实现可变气门定时，简化配气机构的结构，提高运行可靠性。
本发明的又一个目的在于提供一种包含该可变配气机构的发动机，以实现可变气门定时，简化配气机构的结构，提高运行可靠性。
为达到上述目的，本发明提供以下技术方案：
一种气门摇臂总成，包括：
进油软管；
摇臂轴，所述摇臂轴中设置有泄油通道、回油槽和第一油路，所述泄油通道通过所述第一油路与所述回油槽连通；
第一摇臂，转动连接于所述摇臂轴上；
第二摇臂，转动连接于所述摇臂轴上，所述第一摇臂和所述第二摇臂位于同一转动平面内，所述第二摇臂上设置有活塞腔、进油油路、泄油油路和活塞，所述活塞滑动设置于所述活塞腔中，所述活塞的伸出端用于伸出所述活塞腔并与所述第一摇臂推动接触，所述进油油路和所述泄油油路的一端均与所述活塞腔位于所述活塞底部的空间连通，所述进油油路的另一端与所述进油软管连接，所述泄油油路的另一端与所述回油槽之间随着所述第二摇臂的摆动交替通断；
单向导通装置，设置于所述进油油路和/或所述进油软管中，所述单向导通装置的导油方向指向所述活塞腔；
控制阀，与所述泄油通道连接，用于控制所述泄油通道的通断。
优选地，在上述的气门摇臂总成中，所述控制阀为电磁通断阀。
优选地，在上述的气门摇臂总成中，所述气门摇臂总成的工作模式包括气门正常关闭模式和气门早关模式，当处于所述气门正常关闭模式时，所述控制阀关闭；当处于所述气门早关模式时，所述控制阀开启。
优选地，在上述的气门摇臂总成中，所述单向导通装置为单向阀。
优选地，在上述的气门摇臂总成中，所述进油油路的进油处设置有进油连接管，所述进油软管通过所述进油连接管与所述进油油路连通。
本申请还提供了一种可变配气机构，包括气门摇臂、凸轮轴和气门，所述气门摇臂为如以上任一项所述的气门摇臂总成，所述气门摇臂总成的第一摇臂的一端与所述气门传动连接，所述气门摇臂总成的第二摇臂的一端与所述凸轮轴传动连接。
优选地，在上述的可变配气机构中，所述第一摇臂的一端通过气门桥和气门弹簧与所述气门传动连接。
优选地，在上述的可变配气机构中，所述第二摇臂的一端通过挺杆与所述凸轮轴传动连接。
优选地，在上述的可变配气机构中，所述气门为进气门。
本申请还提供了一种发动机，包括配气机构，所述配气机构为如以上任一项所述的可变配气机构。
与现有技术相比，本发明的有益效果是：
本发明提供的气门摇臂总成中，将摇臂分成第一摇臂和第二摇臂，第一摇臂和第二摇臂均转动连接于摇臂轴上，摇臂轴上设置有泄油通道、回油槽和第一油路，泄油通道通过第一油路与所述回油槽连通；第二摇臂上设置有活塞、活塞腔、进油油路和泄油油路，活塞的伸出端能够伸出活塞腔并与第一摇臂推动接触。进油油路和泄油油路的一端均与活塞腔位于所述活塞底部的空间连通，进油油路的另一端与进油软管连接，泄油油路的另一端与回油槽之间随着第二摇臂的摆动交替通断；进油油路和/或进油软管上设置有单向导通装置，导油方向指向活塞腔；泄油通道上设置有控制阀。
工作时，机油从发动机主油道进入进油软管，经单向阀、进油油路进入活塞腔，推动活塞的伸出端伸出。随着第二摇臂和第一摇臂绕着摇臂轴转动，回油槽和泄油油路接通，由于进油油路和/或进油软管中设置有单向导通装置，因此，活塞腔内的机油只能经泄油油路、回油槽和第一油路进入泄油通道。如果控制阀打开，则机油全部泻出，活塞缩回，第二摇臂不再推动第一摇臂转动，相当于摇臂长度变短，实现气门早关。如果控制阀关闭，机油不能泻出，活塞 保持原位，第二摇臂继续推动第一摇臂转动，实现气门的正常关闭。
可见，该气门摇臂总成通过将摇臂分成两段，并在摇臂上增加一个活塞，靠活塞的伸出和缩回实现摇臂长度的变化，通过机械结构实现气门关闭定时不变或者早关闭，提高了运行的可靠性。
本申请提供的可变配气机构和发动机均采用了本申请中的气门摇臂总成，因此，在实现了气门可变正时的同时，简化了结构，提高了运行可靠性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本发明实施例提供的一种气门摇臂总成的剖面结构示意图；
图2为本发明实施例提供的一种气门摇臂总成的气门型线示意图。
其中，1为活塞、2为活塞腔、3为泄油油路、4为进油油路、5为单向导通装置、6为第二摇臂、7为第一摇臂、8为回油槽、9为第一油路、10为泄油通道、11为摇臂轴、12为进油连接管、13为进油软管。
具体实施方式
本发明的核心是提供了一种气门摇臂总成，实现了可变气门定时，简化了配气机构的结构，提高了运行可靠性。
本发明还提供了一种包含该气门摇臂总成的可变配气机构，实现了可变气门定时，简化了配气机构的结构，提高了运行可靠性。
本发明还提供了一种包含该可变配气机构的发动机，实现了可变气门定时，简化了配气机构的结构，提高了运行可靠性。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是 全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参考图1和图2，本发明实施例提供了一种气门摇臂总成，其包括进油软管13、摇臂轴11、第一摇臂7、第二摇臂6、单向导通装置5和控制阀；其中，摇臂轴11中设置有泄油通道10、回油槽8和第一油路9，进油软管13用于与发动机主油路连通，泄油通道10通过第一油路9与回油槽8连通。
第一摇臂7转动连接于摇臂轴11上；第二摇臂6转动连接于摇臂轴11上，第一摇臂7和第二摇臂6位于同一转动平面内，即摇臂分成两段。第二摇臂6上设置有活塞腔2、进油油路4、泄油油路3和活塞1，其中，活塞1滑动设置于活塞腔2中，活塞1的伸出端能够伸出活塞腔2并与第一摇臂7推动接触，即第二摇臂6可通过活塞1的伸出端推动第一摇臂7转动；进油油路4和泄油油路3的一端均与活塞腔2位于活塞1底部的空间连通，进油油路4的另一端与进油软管13连接，泄油油路3的另一端与回油槽8之间随着第二摇臂6的摆动交替通断。
单向导通装置5设置于进油油路4和/或进油软管13中，且单向导通装置5的导油方向指向活塞腔2，只允许机油从进油软管13、进油油路4进入活塞腔2，不允许活塞腔2中的机油回流至进油油路4和进油软管13中。
控制阀连接于泄油通道10中，用于控制泄油通道10的通断。
该气门摇臂总成具有两个工作模式，分别是气门正常关闭模式和气门早关模式。当气门摇臂总成处于气门早关模式时，控制阀开启，即泄油通道10导通；当气门摇臂总成处于气门正常关闭模式时，控制阀关闭，即泄油通道10不导通。
具体地，当气门摇臂总成进行气门早关模式时，第二摇臂6的初始位置为，泄油油路3与回油槽8不连通，此时，机油从发动机主油道进入进油软管13，经进油油路4进入活塞腔2，推动活塞1的伸出端伸出，活塞1的伸出端与第一摇臂7接触，第二摇臂6通过活塞1的伸出端推动第一摇臂7一起绕摇臂轴11转动，随着第二摇臂6和第一摇臂7绕着摇臂轴11转动，回油槽8和泄油油路3接通，由于进油油路4和/或进油软管13中设置有单向导通装置5，因 此，活塞腔2内的机油只能经泄油油路3、回油槽8和第一油路9进入泄油通道10，由于该工作模式下，控制阀开启，泄油通道10导通，因此，机油全部泻出，活塞1缩回，第二摇臂6不再推动第一摇臂7转动，相当于摇臂长度变短，气门按照图2中的气门型线1进行动作，实现气门早关。
当气门摇臂总成进行气门正常关闭模式时，第二摇臂6的初始位置为，泄油油路3与回油槽8不连通，此时，机油从发动机主油道进入进油软管13，经进油油路4进入活塞腔2，推动活塞1的伸出端伸出，活塞1的伸出端与第一摇臂7接触，第二摇臂6推动第一摇臂7一起绕摇臂轴11转动，随着第二摇臂6和第一摇臂7绕着摇臂轴11转动，回油槽8和泄油油路3接通，由于进油油路4和/或进油软管13中设置有单向导通装置5，因此，活塞腔2内的机油只能经泄油油路3、回油槽8和第一油路9进入泄油通道10，由于该工作模式下，控制阀关闭，泄油通道10不导通，因此，机油不能泻出，活塞1保持原位，第二摇臂6继续推动第一摇臂7转动，相当于摇臂的长度增加，气门按照图2中的气门型线2动作，实现气门的正常关闭。
可见，该气门摇臂总成通过将摇臂分成两段，并在摇臂上增加一个活塞1，通过油路设计，靠活塞1的伸出和缩回实现摇臂长度的变化，通过机械结构实现气门关闭定时不变或者早关闭，与现有的通过复杂的电磁控制系统实现气门可变正时相比，提高了运行的可靠性，不需要对发动机进行大的改动，结构简单可靠。
在本实施例中，控制阀优选为电磁通断阀，当然，也可以为电动阀、液压阀等，电磁通断阀能够实现快速响应，控制更加精确。
如图1所示，进一步地，在本实施例中，单向导通装置5为单向阀，单向阀的导油方向指向活塞腔2。通过在进油油路4和/或进油软管13中设置单向阀，能够防止活塞腔2的机油回流至进油油路4和进油软管13中。当然，单向导通装置5还可以为控制阀门，当进油时，控制阀门开启，当第二摇臂6转动到泄油油路3与回油槽8连通时，控制阀门关闭，同样能够实现单向导通。只是不如单向阀结构简单，可靠性高。
在本实施例中，进油油路4的进油处设置有进油连接管12，进油软管13 通过进油连接管12与进油油路4始终连通。进油软管13能够跟随第二摇臂6的摆动而变形，设置进油连接管12为了方便进油软管13与进油油路4的连接。进油连接管12通过焊接或螺纹连接固定于进油油路4的进口处。进油软管13套接于进油连接管12上。
当然，进油软管13也可以直接连接于进油油路4的进口处，可通过粘接等方式进行固定。
基于以上任一项所述的气门摇臂总成，本发明实施例还提供了一种可变配气机构，包括气门摇臂、凸轮轴和气门，其中，气门摇臂为如以上任一实施例所描述的气门摇臂总成，气门摇臂总成的第一摇臂7的一端与气门传动连接，气门摇臂总成的第二摇臂6的一端与凸轮轴传动连接。
工作时，凸轮轴转动，驱动第二摇臂6绕摇臂轴11转动，推动第一摇臂7转动，第一摇臂7的一端驱动气门的开启和关闭。由于采用了本申请中的气门摇臂总成，能够实现气门可变正时，实现气门的早关或正常关闭，结构简单，运行可靠。
在本实施例中，第一摇臂7的一端通过气门桥和气门弹簧与气门传动连接，对于传动的四冲程发动机，气门两两成对，因此，通过气门桥同时驱动两个气门的开启和关闭。气门弹簧起到弹性复位的作用。
在本实施例中，第二摇臂6的一端通过挺杆与凸轮轴传动连接，对于下置凸轮轴配气机构和中置凸轮轴配气机构，摇臂需要通过挺杆与凸轮轴传动连接。当然，对于顶置凸轮轴配气机构，第二摇臂6的一端直接与凸轮轴接触驱动连接。
在本实施例中，气门优选为进气门，通过气门摇臂总成与进气门的驱动连接，实现进气门的早关或正常关闭，进气门的开启时刻不变。当然，如果设计需要，气门还可以为排气门，实现排气门的早关或正常关闭。
基于以上任一实施例所描述的可变配气机构，本发明实施例还提供了一种发动机，包括配气机构，其中，配气机构为如以上任一实施例所描述的可变配 气机构。由于采用了本申请中的可变配气机构，能够实现气门可变正时，实现气门的早关或正常关闭，结构简单，运行可靠。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种气门摇臂总成，其特征在于，包括：
    进油软管；
    摇臂轴，所述摇臂轴中设置有泄油通道、回油槽和第一油路，所述泄油通道通过所述第一油路与所述回油槽连通；
    第一摇臂，转动连接于所述摇臂轴上；
    第二摇臂，转动连接于所述摇臂轴上，所述第一摇臂和所述第二摇臂位于同一转动平面内，所述第二摇臂上设置有活塞腔、进油油路、泄油油路和活塞，所述活塞滑动设置于所述活塞腔中，所述活塞的伸出端用于伸出所述活塞腔并与所述第一摇臂推动接触，所述进油油路和所述泄油油路的一端均与所述活塞腔位于所述活塞底部的空间连通，所述进油油路的另一端与所述进油软管连接，所述泄油油路的另一端与所述回油槽之间随着所述第二摇臂的摆动交替通断；
    单向导通装置，设置于所述进油油路和/或所述进油软管中，所述单向导通装置的导油方向指向所述活塞腔；
    控制阀，与所述泄油通道连接，用于控制所述泄油通道的通断。
  2. 根据权利要求1所述的气门摇臂总成，其特征在于，所述控制阀为电磁通断阀。
  3. 根据权利要求1所述的气门摇臂总成，其特征在于，所述气门摇臂总成的工作模式包括气门正常关闭模式和气门早关模式，当处于所述气门正常关闭模式时，所述控制阀关闭；当处于所述气门早关模式时，所述控制阀开启。
  4. 根据权利要求1所述的气门摇臂总成，其特征在于，所述单向导通装置为单向阀。
  5. 根据权利要求1所述的气门摇臂总成，其特征在于，所述进油油路的进油处设置有进油连接管，所述进油软管通过所述进油连接管与所述进油油路连通。
  6. 一种可变配气机构，包括气门摇臂、凸轮轴和气门，其特征在于，所述气门摇臂为如权利要求1-5任一项所述的气门摇臂总成，所述气门摇臂总成 的第一摇臂的一端与所述气门传动连接，所述气门摇臂总成的第二摇臂的一端与所述凸轮轴传动连接。
  7. 根据权利要求6所述的可变配气机构，其特征在于，所述第一摇臂的一端通过气门桥和气门弹簧与所述气门传动连接。
  8. 根据权利要求6所述的可变配气机构，其特征在于，所述第二摇臂的一端通过挺杆与所述凸轮轴传动连接。
  9. 根据权利要求6-8任一项所述的可变配气机构，其特征在于，所述气门为进气门。
  10. 一种发动机，包括配气机构，其特征在于，所述配气机构为如权利要求6-9任一项所述的可变配气机构。
PCT/CN2017/119260 2017-12-28 2017-12-28 一种气门摇臂总成、可变配气机构及发动机 WO2019127188A1 (zh)

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US16/753,844 US11352961B2 (en) 2017-12-28 2017-12-28 Valve rocker arm assembly, variable air distribution mechanism and engine
EP17936586.1A EP3734029B1 (en) 2017-12-28 2017-12-28 Valve rocker arm assembly, variable air distribution mechanism, and engine

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627391A (en) * 1984-12-24 1986-12-09 General Motors Corporation Engine valve train system
US5113813A (en) * 1990-02-16 1992-05-19 Ferrari S.P.A. Variable timing system, particularly for an internal combustion engine
US5758620A (en) * 1997-03-21 1998-06-02 Detroit Diesel Corporation Engine compression brake system
DE102006007121A1 (de) * 2006-02-16 2007-08-23 Daimlerchrysler Ag Gaswechselventilbetätigungsvorrichtung
CN102840005A (zh) * 2011-06-24 2012-12-26 上海尤顺汽车部件有限公司 一种固链式复合摇臂制动装置
CN103266927A (zh) * 2013-05-07 2013-08-28 天津大学 液压式无级可变气门摇臂系统
CN108167044A (zh) * 2017-12-28 2018-06-15 潍柴动力股份有限公司 一种气门摇臂总成、可变配气机构及发动机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2239920A (en) * 1939-04-22 1941-04-29 Nat Supply Co Lubricating apparatus
US5107803A (en) * 1991-02-15 1992-04-28 Alan Furnivall Split-action rocker arm
US8726863B2 (en) * 2007-03-16 2014-05-20 Jacobs Vehicle Systems, Inc. Rocker shaft pedestal incorporating an engine valve actuation system or engine brake
KR101143559B1 (ko) * 2009-09-25 2012-05-24 기아자동차주식회사 오일유로 통합형 엔진브레이크 장치
KR101610072B1 (ko) * 2010-09-28 2016-04-07 현대자동차주식회사 로커암 분리형 가변 밸브 리프트 장치
US8904982B2 (en) * 2010-11-17 2014-12-09 Mack Trucks, Inc. Hinged rocker arm and valve opening arrangement including a hinged rocker arm
DE102013215946A1 (de) * 2013-08-12 2015-02-12 Avl List Gmbh Ventilbetätigungseinrichtung zur Veränderung des Ventilhubs
WO2015120897A1 (en) * 2014-02-14 2015-08-20 Eaton Srl Rocker arm assembly for engine braking

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627391A (en) * 1984-12-24 1986-12-09 General Motors Corporation Engine valve train system
US5113813A (en) * 1990-02-16 1992-05-19 Ferrari S.P.A. Variable timing system, particularly for an internal combustion engine
US5758620A (en) * 1997-03-21 1998-06-02 Detroit Diesel Corporation Engine compression brake system
DE102006007121A1 (de) * 2006-02-16 2007-08-23 Daimlerchrysler Ag Gaswechselventilbetätigungsvorrichtung
CN102840005A (zh) * 2011-06-24 2012-12-26 上海尤顺汽车部件有限公司 一种固链式复合摇臂制动装置
CN103266927A (zh) * 2013-05-07 2013-08-28 天津大学 液压式无级可变气门摇臂系统
CN108167044A (zh) * 2017-12-28 2018-06-15 潍柴动力股份有限公司 一种气门摇臂总成、可变配气机构及发动机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3734029A4 *

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EP3734029A1 (en) 2020-11-04

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