Engine brake rocker arm assembly and engine

Abstract

The present application relates to an engine brake rocker arm assembly and an engine, belonging to the field of engine technology. The engine brake rocker arm assembly of the present application includes a rocker arm and a piston. The rocker arm is provided with an oil inlet channel and a control valve for controlling the oil volume. The brake end of the rocker arm is provided with an oil chamber and an oil channel for injecting oil into the oil chamber. The piston is slidably connected in the oil chamber, and the rocker arm is connected to a movable component for pushing the piston out of the oil chamber and sliding along the oil chamber with the piston. Even under high-speed rotation or extreme working conditions, the movable component can effectively prevent the piston from deviating from the predetermined trajectory due to inertia, avoiding unexpected collisions with the valve. The reliability and stability of the braking system are improved.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an engine brake rocker arm assembly and an engine. Background Art

[0002] In the design of existing engine brake rocker arms, when the braking function is not activated, the actuator (specifically the actuator piston) is usually maintained in a position retracted to the inside of the rocker arm by the force of the spring to ensure that it does not participate in the work during the normal power cycle. In the existing technical solution, the brake rocker arm, driven by the camshaft, will perform reciprocating rotation along the rocker arm shaft. During this process, the actuator piston is designed to always rotate around the rocker arm shaft axis together with the rocker arm. However, due to the limitations of the spatial layout, the elastic force provided by the spring used to constrain the actuator piston is often difficult to fully offset the huge inertial force generated by the actuator piston under high-speed rotation. Therefore, under extreme working conditions, the actuator piston may deviate from its predetermined trajectory due to inertia, and then unexpectedly collide with the valve. This abnormal impact not only destroys the stable operation of the mechanism, but also significantly reduces the reliability of the entire braking system. Summary of the Invention

[0003] An embodiment of the present application provides an engine brake rocker arm assembly and an engine to solve the problem in related technologies that, under adverse working conditions, the actuator piston of the brake rocker arm may deviate from the predetermined trajectory due to inertia, collide with the valve, damage the mechanical components, and reduce the reliability of the entire braking system.

[0004] In a first aspect, an embodiment of the present application provides an engine brake rocker arm assembly, comprising:

[0005] A rocker arm, wherein the rocker arm is provided with an oil inlet channel and a control valve for controlling the oil amount, and the brake end of the rocker arm is provided with an oil cavity and an oil channel for injecting oil into the oil cavity;

[0006] The piston is slidably connected to the oil chamber, and the rocker arm is connected to a movable component for pushing the piston out of the oil chamber and sliding along the oil chamber with the piston.

[0007] In some embodiments, the movable component includes a limiting nut connected to the inner wall of the piston, an elastic resistance member arranged between the limiting nut and the rocker arm for pushing the piston to extend out of the oil chamber, and an adjusting bolt threadedly connected to the rocker arm and located in the oil chamber, and the elastic resistance member is sleeved on the adjusting bolt.

[0008] In some embodiments, the end of the adjusting bolt is provided with a protrusion for abutting against and limiting the limiting nut.

[0009] In some embodiments, a boss is provided on the inner wall of the piston, the limiting nut is provided on the boss, and the limiting nut protrudes from the inner wall of the piston.

[0010] In some embodiments, a locking nut is provided at one end of the adjusting bolt.

[0011] In some embodiments, the elastic resistance member is a spring.

[0012] In some embodiments, a roller is provided at the end of the rocker arm.

[0013] In some embodiments, a cam for abutting against the roller is provided on one side of the roller.

[0014] In some embodiments, a valve is provided at one end of the piston.

[0015] In a second aspect, an embodiment of the present application provides an engine, comprising the above-mentioned engine brake rocker arm assembly.

[0016] The beneficial effects of the technical solution provided by this application include:

[0017] An embodiment of the present application provides an engine brake rocker arm assembly and an engine. The engine brake rocker arm assembly of the present application includes a rocker arm and a piston. The rocker arm is provided with an oil inlet channel and a control valve for controlling the oil amount. The braking end of the rocker arm is provided with an oil chamber and an oil channel for injecting oil into the oil chamber. The piston is slidably connected in the oil chamber, and the rocker arm is connected to a movable component for pushing the piston out of the oil chamber and sliding along the oil chamber following the piston.

[0018] In actual use, the rocker arm is the fundamental support component of the entire assembly. It is connected to the corresponding position of the engine and is fixed and rotated by the rocker arm shaft. The rocker arm is designed with an oil inlet channel for supplying oil to the oil chamber. A control valve precisely controls the amount of oil entering the oil chamber, thereby regulating the movement of the piston. The oil chamber, located at the braking end of the rocker arm, is the primary space for the piston to slide and operate. The oil channel is responsible for directing oil from the oil inlet channel to the oil chamber, ensuring smooth extension and retraction of the piston. The piston slides in the oil chamber and is a key component in performing the braking function. When the oil chamber is filled with oil, the piston is extended by the oil pressure, contacting the valve and controlling its opening and closing. A good sliding seal between the piston and the inner wall of the oil chamber prevents oil leakage while allowing the piston to slide freely within the oil chamber. The movable assembly is configured to push the piston out of the oil chamber and slide along it. Because it pushes the piston out of the oil chamber, the piston remains permanently extended, maintaining its maximum extension. Even when the rocker arm swings back and forth, the piston only swings slightly at the valve end, preventing any anomalies. Therefore, even under high-speed rotation or extreme operating conditions, the movable assembly effectively prevents the piston from deviating from its intended trajectory due to inertia, thus avoiding unexpected collisions with the valve. This improves the reliability and stability of the braking system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic structural diagram of a rocker arm assembly provided in an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of the rocker arm assembly in a non-braking state;

[0022] Figure 3 Schematic diagram of the rocker arm assembly in the braking state.

[0023] Reference numerals:

[0024] 1. Rocker arm; 2. Control valve; 3. Locking nut; 4. Elastic resistance member; 5. Limit nut; 6. Piston; 7. Valve; 8. Roller; 9. Cam; 10. Adjusting bolt; 11. Oil chamber; 12. Oil channel; 61. Boss; 101. Protrusion. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] An embodiment of the present application provides an engine brake rocker arm assembly and an engine, which can solve the problem in related technologies that, under adverse working conditions, the actuator piston of the brake rocker arm may deviate from the predetermined trajectory due to inertia, collide with the valve, damage the mechanical components, and reduce the reliability of the entire braking system.

[0027] On the one hand, see Figures 1 to 3 As shown, an embodiment of the present application provides an engine brake rocker arm assembly, including a rocker arm 1 and a piston 6. The rocker arm 1 is provided with an oil inlet channel and a control valve 2 for controlling the oil amount. The braking end of the rocker arm 1 is provided with an oil chamber 11 and an oil passage 12 for injecting oil into the oil chamber 11; the piston 6 is slidably connected to the oil chamber 11, and the rocker arm 1 is connected to a movable component for pushing the piston 6 out of the oil chamber 11 and sliding along the oil chamber 11 following the piston 6.

[0028] In actual use, the rocker arm 1 is the fundamental supporting component of the entire assembly. It is connected to the corresponding position of the engine and is fixed and rotated by the rocker arm 1 shaft. Rocker arm 1 is designed with an oil inlet channel for delivering oil to the oil chamber 11. The control valve 2 precisely controls the amount of oil entering the oil chamber 11, thereby regulating the movement of the piston 6. The oil chamber 11, located at the braking end of the rocker arm 1, is the primary space for the piston 6 to slide and operate. The oil channel 12 is responsible for directing oil from the oil inlet channel into the oil chamber 11, ensuring smooth extension and retraction of the piston 6. The piston 6 is slidably connected to the oil chamber 11 and is a key component in performing the braking function. When the oil chamber 11 is filled with oil, the piston 6 is extended by the oil pressure, contacting the valve 7 and controlling its opening and closing. A good sliding seal is established between the piston 6 and the inner wall of the oil chamber 11, preventing oil leakage while allowing the piston 6 to slide freely within the oil chamber 11. The movable assembly is configured to push piston 6 out of oil chamber 11 and slide along it. Because it pushes piston 6 out of oil chamber 11, it maintains its maximum extension. Even when rocker arm 1 swings back and forth, piston 6 only swings slightly at valve 7, preventing any anomalies. Therefore, even at high speeds or under extreme operating conditions, the movable assembly effectively prevents piston 6 from deviating from its intended trajectory due to inertia, thus avoiding unexpected collisions with valve 7. This improves the reliability and stability of the braking system.

[0029] During use, a spring is usually provided at the piston 6, and the spring force makes the piston 6 maintain a tendency to move toward the end close to the rocker arm 1. Once the piston 6 overcomes the spring force used for restraint under high-speed rotation or extreme working conditions, it is easy to collide violently with the valve 7. The movable component of the present application can push the piston 6 out of the oil chamber 11, so that the piston 6 always maintains a tendency to move toward the end away from the rocker arm 1, that is, maintains a tendency to move toward the direction of the valve 7. Therefore, even under high-speed rotation or extreme working conditions, the movable component can effectively prevent the piston 6 from deviating from the predetermined trajectory due to inertia, avoid unexpected collision with the valve 7, and ensure the stability and reliability of the mechanism.

[0030] In some optional embodiments, such as Figure 1As shown, the movable assembly includes a stop nut 5 connected to the inner wall of the piston 6, an elastic abutment 4 positioned between the stop nut 5 and the rocker arm 1 to push the piston 6 out of the oil chamber 11, and an adjusting bolt 10 threadedly connected to the rocker arm 1 and positioned within the oil chamber 11. The elastic abutment 4 is mounted on the adjusting bolt 10. The stop nut 5 is connected to the inner wall of the piston 6, serving as a support point for the elastic abutment 4 and limiting the sliding range of the piston 6 within the oil chamber 11. By being attached to the inner wall of the piston 6, it ensures that the piston 6 can stably extend out of the oil chamber 11 when subjected to thrust and remain extended when required. The elastic abutment 4 is mounted on the adjusting bolt 10, positioned between the stop nut 5 and the rocker arm 1. The elastic abutment 4 provides the thrust required for the piston 6 to extend out of the oil chamber 11. The elastic abutment 4 also provides a certain degree of cushioning and shock absorption when the piston 6 is subjected to external forces, protecting the piston 6 and the oil chamber 11 from damage. Adjusting bolt 10 is threaded onto rocker arm 1 and located within oil chamber 11. Its primary function is to adjust the degree of compression of elastic resistance member 4, thereby controlling the force and speed of piston 6 extension. By rotating adjusting bolt 10, the length of its extension into oil chamber 11 can be varied, thereby adjusting the degree of compression of elastic resistance member 4. This adjustment capability allows the braking system to adapt to varying operating conditions and braking requirements, enhancing its flexibility and adaptability.

[0031] When braking is required, oil enters oil chamber 11 through the oil inlet passage and control valve 2, exerting pressure on piston 6. Under the combined action of the oil pressure and the elastic resistance member 4, piston 6 slides along oil chamber 11 and extends, contacting valve 7 and controlling its opening and closing. By rotating the adjusting bolt 10, the degree of compression of the elastic resistance member 4 can be adjusted, thereby varying the force and speed of piston 6 extension. The stop nut 5 acts as a support point, ensuring that piston 6 remains stable during extension and preventing it from deviating from its intended trajectory due to inertia.

[0032] In some optional embodiments, the elastic resistance member 4 is a spring. This spring, acting as the elastic resistance member 4, is mounted on the adjusting bolt 10 and positioned between the stop nut 5 and the rocker arm 1. The spring provides the thrust required for the piston 6 to extend from the oil chamber 11 and provides a certain degree of cushioning and shock absorption when the piston 6 is subjected to external forces. By adjusting the degree of spring compression, the force and speed of piston 6 extension can be controlled, making the braking system more flexible and adaptable.

[0033] In some optional embodiments, such as Figure 1As shown, the end of the adjusting bolt 10 is provided with a protrusion 101 for contacting the limit nut 5. This design ensures that the adjusting bolt 10 remains stably in its predetermined position during adjustment, preventing it from loosening or shifting due to vibration or external forces. Furthermore, the protrusion 101 limits the range of movement of the limit nut 5, ensuring the stability and reliability of the entire braking system.

[0034] In some optional embodiments, a boss 61 is provided on the inner wall of the piston 6, and the limiting nut 5 is provided at the boss 61, and the limiting nut 5 protrudes from the inner wall of the piston 6. The limiting nut 5 is provided at the boss 61 on the inner wall of the piston 6 and protrudes from the inner wall of the piston 6. This design enables the limiting nut 5 to fit more closely on the piston 6, thereby enhancing its stability and reliability. At the same time, the limiting nut 5 protruding from the inner wall of the piston 6 can also play a supporting role, thereby improving the strength and durability of the entire braking system. The boss 61 is provided on the inner wall of the piston 6 for mounting the limiting nut 5. The design of the boss 61 enables the limiting nut 5 to be stably fixed on the piston 6 and ensures that it can tightly contact the protrusion 101 of the adjusting bolt 10. This design not only improves the stability and reliability of the braking system, but also makes the entire assembly more compact and efficient.

[0035] In some optional embodiments, a locking nut 3 is provided at one end of the adjusting bolt 10. The locking nut 3 can fit tightly on the adjusting bolt 10, and by tightening the locking nut 3, the position of the adjusting bolt 10 on the rocker arm 1 can be fixed. This ensures that the adjusting bolt 10 will not loosen or shift due to vibration or external force, thereby ensuring the stability and reliability of the entire braking system. The adjusting bolt 10 is not only used to adjust the compression degree of the elastic resistance member 4, but also serves as a support point for the elastic resistance member 4. The presence of the locking nut 3 can prevent the elastic resistance member 4 from loosening due to vibration or wear during long-term use, thereby ensuring that the elastic resistance member 4 can continue to provide stable thrust and keep the piston 6 extending out of the oil chamber 11. By tightening or loosening the locking nut 3, the position of the adjusting bolt 10 can be fine-tuned, thereby precisely controlling the compression degree of the elastic resistance member 4 and the extension force of the piston 6. This fine-tuning function enables the braking system to adapt to different working conditions and braking requirements, improving the flexibility and adaptability of the system. The lock nut 3 and the adjusting bolt 10 are used together to strengthen the connection strength between the movable component and the rocker arm 1. This stable connection structure can withstand greater external forces and vibrations, ensuring that the brake system can maintain a stable working state under harsh working conditions.

[0036] In some optional embodiments, a roller 8 is provided at the end of rocker arm 1. Attached to the end of rocker arm 1, roller 8 reduces friction and wear between rocker arm 1 and cam 9, thereby improving the efficiency and lifespan of the entire assembly. Furthermore, roller 8 ensures smoother rotation of rocker arm 1, ensuring the stability and reliability of the braking system.

[0037] In some optional embodiments, a cam 9 is positioned on one side of roller 8 to abut against it. Cam 9 is located within the engine, and its profile is designed to contact and rotate roller 8. The cam 9 rotates roller 8 by changing its profile, which in turn drives the reciprocating motion of rocker arm 1 and piston 6. This design allows the braking system to be precisely adjusted and controlled based on the engine's operating requirements.

[0038] In some optional embodiments, a valve 7 is provided at one end of the piston 6. The valve 7 is one of the key components of the engine and is used to control the flow of gas in the cylinder. When the piston 6 extends, it contacts the valve 7 and controls its opening and closing, thereby achieving precise control of the engine's operating state. This design enables the braking system to more effectively regulate the engine's output power and performance. When the engine is working, the cam 9 rotates and abuts the roller 8, pushing the rocker arm 1 to reciprocate. The reciprocating motion of the rocker arm 1 is transmitted to the piston 6 through the movable component, causing it to slide along the oil chamber 11 and extend. When the piston 6 extends, it contacts the valve 7 and controls its opening and closing, thereby achieving precise control of the engine's operating state. By adjusting the degree of compression of the spring and the position of the adjusting bolt 10, the extension force and speed of the piston 6 can be precisely controlled, making the braking system more flexible and adaptable.

[0039] In actual use, such as Figure 1 During assembly, after the device is assembled on the engine, when adjusting the valve 7 clearance, roller 8 contacts the base circle of cam 9. By adjusting the position of adjusting bolt 10, the clearance between piston 6 and valve 7 is adjusted. Note that at this time, piston 6 is fully retracted into the piston 6 hole and contacts the bottom surface of adjusting bolt 10. After adjusting the valve 7 clearance to the designed value, tighten the lock nut 3 to lock the adjusting bolt 10 in place. After the clearance is adjusted, piston 6 will be in an extended state under the action of the spring. If the clearance between piston 6 and valve 7 is greater than the stroke of piston 6, the limit nut 5 will limit the piston 6 from extending further, preventing it from extending too far.

[0040] like Figure 2As shown, when the engine is in the positive power state, that is, in the ignition condition, and the brake is not on, the solenoid valve is not open, and the engine oil cannot enter the brake rocker arm 1. The one-way control valve 2 is in a two-way normally open state, and the engine oil can freely pass through the one-way control valve 2 in both directions. There is no oil pressure in the oil passage 12 and the oil chamber 11 of the rocker arm 1. When the cam 9 drives the rocker arm 1 to rotate, under the action of the valve 7, the piston 6 will retract into the piston 6 hole of the rocker arm 1. Because the maximum stroke of the piston 6 is greater than the maximum lift of the brake valve 7, the piston 6 does not contact the bottom surface of the adjusting bolt 10 when it retracts into the piston 6 hole. In other words, the movement of the rocker arm 1 and the adjusting bolt 10 cannot be transmitted to the piston 6 and the valve 7. At this time, the piston 6 will not be able to drive the valve 7 to open, and the brake is in the closed state.

[0041] like Figure 3 As shown, when the brake solenoid valve is energized, the solenoid valve opens, and the oil passes through the one-way control valve 2, the oil passage 12, and into the oil chamber 11, filling the oil chamber 11. At this time, the one-way control valve 2 is in a one-way flow state, that is, only inflow but not outflow. At this time, when the cam 9 drives the rocker arm 1 to rotate, due to the incompressibility of the oil in the oil chamber 11, the piston 6 will drive the valve 7 to open, and the brake is in the open state. When the solenoid valve is de-energized, the one-way control valve 2 returns to the two-way normal flow state. When the cam 9 drives the rocker arm 1 to rotate, under the action of the valve 7, the piston 6 retracts into the piston 6 hole of the rocker arm 1 and discharges the oil in the oil chamber 11, and the rocker arm 1 returns to the closed state.

[0042] Secondly, embodiments of the present application provide an engine including the aforementioned engine brake rocker arm assembly. This engine, including the aforementioned engine brake rocker arm assembly, can improve the reliability of the engine's braking mechanism, thereby ensuring engine quality. Furthermore, the structure of the present application is integrated into the rocker arm 1, eliminating excess space and facilitating installation on the engine.

[0043] The engine brake rocker arm assembly of the present application includes a rocker arm 1 and a piston 6. The rocker arm 1 is provided with an oil inlet channel and a control valve 2 for controlling the oil amount. The braking end of the rocker arm 1 is provided with an oil chamber 11 and an oil channel 12 for injecting oil into the oil chamber 11; the piston 6 is slidably connected to the oil chamber 11, and the rocker arm 1 is connected to a movable component for pushing the piston 6 out of the oil chamber 11 and sliding along the oil chamber 11 following the piston 6.

[0044] In actual use, the rocker arm 1 is the fundamental supporting component of the entire assembly. It is connected to the corresponding position of the engine and is fixed and rotated by the rocker arm 1 shaft. Rocker arm 1 is designed with an oil inlet channel for delivering oil to the oil chamber 11. The control valve 2 precisely controls the amount of oil entering the oil chamber 11, thereby regulating the movement of the piston 6. The oil chamber 11, located at the braking end of the rocker arm 1, is the primary space for the piston 6 to slide and operate. The oil channel 12 is responsible for directing oil from the oil inlet channel into the oil chamber 11, ensuring smooth extension and retraction of the piston 6. The piston 6 is slidably connected to the oil chamber 11 and is a key component in performing the braking function. When the oil chamber 11 is filled with oil, the piston 6 is extended by the oil pressure, contacting the valve 7 and controlling its opening and closing. A good sliding seal is established between the piston 6 and the inner wall of the oil chamber 11, preventing oil leakage while allowing the piston 6 to slide freely within the oil chamber 11. The movable assembly is configured to push piston 6 out of oil chamber 11 and slide along it. Because it pushes piston 6 out of oil chamber 11, it maintains its maximum extension. Even when rocker arm 1 swings back and forth, piston 6 only swings slightly at valve 7, preventing any anomalies. Therefore, even at high speeds or under extreme operating conditions, the movable assembly effectively prevents piston 6 from deviating from its intended trajectory due to inertia, thus avoiding unexpected collisions with valve 7. This improves the reliability and stability of the braking system.

[0045] In some further optimized optional embodiments, the design of the movable assembly not only demonstrates high flexibility and reliability, but also incorporates a sophisticated adjustment mechanism to ensure precise control of braking performance. The elastic resistance member 4 is made of high-quality spring material. This spring not only possesses excellent elastic recovery and durability, but also allows for the selection of springs with different stiffness coefficients to meet actual needs, allowing for precise adjustment of the force and speed of piston 6 extension in various braking scenarios. The spring's ends, respectively, closely contact the limit nut 5 and the rocker arm 1, ensuring stable and continuous thrust output under all operating conditions, effectively improving the responsiveness and stability of the braking system.

[0046] The connection between the stop nut 5 and the inner wall of the piston 6 uses a precise fit or locking structure to prevent loosening under long-term high-load operation, ensuring that the piston 6 moves accurately within the oil chamber 11. This design not only enhances the overall structural strength of the system but also avoids the risk of brake failure caused by displacement of the piston 6.

[0047] In addition, in practice, the active components are also equipped with dustproof and sealing devices to effectively prevent oil leakage and impurities from intruding, ensuring the cleanliness of the internal environment of the braking system and the purity of the oil, further improving the reliability and service life of the system.

[0048] In summary, through ingenious structural design and material selection, the active components not only achieve precise control of braking force, but also enhance the durability, response speed and adaptability of the system, providing vehicles with an efficient and reliable braking solution.

[0049] The design of the adjusting bolt 10 goes beyond its basic adjustment function. Specifically, a carefully designed protrusion 101 is incorporated into the end of the adjusting bolt 10. This protrusion 101 not only forms a tight contact with the stop nut 5, effectively preventing accidental loosening or displacement of the adjusting bolt 10 in dynamic operating environments, but also physically limits the range of motion of the stop nut 5, thereby ensuring precise alignment and stable coordination of the brake system's internal components. This design significantly improves the accuracy and consistency of braking response.

[0050] A boss 61 is located within the piston 6. This boss 61 not only provides a solid mounting base for the stop nut 5 but also significantly enhances the connection strength between the stop nut 5 and the piston 6 by increasing the contact area and tightening force. The stop nut 5, protruding from the inner wall of the piston 6, not only enhances structural stability but also serves as an additional support point for the elastic resistance member 4, further improving the overall strength and durability of the braking system. This support structure ensures that the braking system maintains stability and reliability even under high loads or in extreme operating environments.

[0051] At the other end of the adjusting bolt 10, the locking nut 3 fits tightly onto the adjusting bolt 10 through precise threaded engagement. Through proper tightening, the position of the adjusting bolt 10 can be firmly fixed, effectively resisting interference from vibration and external forces. This design not only ensures the long-term stability of the position of the adjusting bolt 10, but also provides additional support for the elastic resistance member 4 to prevent it from loosening due to wear or vibration during long-term operation, thereby ensuring the continued stability of the piston 6 extending out of the oil chamber 11. In addition, the use of the locking nut 3 in conjunction with the adjusting bolt 10 also gives the braking system a certain degree of fine-tuning capability. By finely adjusting the tightness of the locking nut 3, the degree of compression of the elastic resistance member 4 can be precisely controlled, thereby adjusting the extension force of the piston 6, allowing the braking system to flexibly adapt to different working conditions and braking requirements.

[0052] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0053] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0054] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An engine brake rocker arm assembly, characterized in that: include: A rocker arm (1), wherein the rocker arm (1) is provided with an oil inlet passage and a control valve (2) for controlling the amount of oil, and a brake end of the rocker arm (1) is provided with an oil chamber (11) and an oil passage (12) for injecting oil into the oil chamber (11); A piston (6), the piston (6) being slidably connected to the oil chamber (11), and a movable component being connected to the rocker arm (1) for pushing the piston (6) out of the oil chamber (11) and sliding along the oil chamber (11) following the piston (6); The movable assembly includes a limiting nut (5) connected to the inner wall of the piston (6), an elastic resistance member (4) arranged between the limiting nut (5) and the rocker arm (1) for pushing the piston (6) to extend out of the oil chamber (11), and an adjusting bolt (10) threadedly connected to the rocker arm (1) and located in the oil chamber (11), and the elastic resistance member (4) is sleeved on the adjusting bolt (10).

2. The engine brake rocker arm assembly according to claim 1, characterized in that: The end of the adjusting bolt (10) is provided with a protrusion (101) for abutting against and limiting the limiting nut (5).

3. The engine brake rocker arm assembly according to claim 2, characterized in that: The inner wall of the piston (6) is provided with a boss (61), the limiting nut (5) is provided on the boss (61), and the limiting nut (5) is provided so as to protrude from the inner wall of the piston (6).

4. The engine brake rocker arm assembly according to claim 1, characterized in that: A locking nut (3) is provided at one end of the adjusting bolt (10).

5. The engine brake rocker arm assembly according to claim 1, characterized in that: The elastic resistance member (4) is a spring.

6. The engine brake rocker arm assembly according to claim 1, characterized in that: A roller (8) is provided at the end of the rocker arm (1).

7. The engine brake rocker arm assembly according to claim 6, characterized in that: A cam (9) for contacting the roller (8) is provided on one side of the roller (8).

8. The engine brake rocker arm assembly according to claim 6, characterized in that: One end of the piston (6) is provided with a valve (7).

9. An engine, characterized in that: The invention comprises the engine brake rocker arm assembly according to any one of claims 1 to 8.

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