High-power diesel engine timing gear train lubrication distribution block
By designing a lubrication distribution block for the timing gear system of a high-power diesel engine, and adopting a stepped structure and a specific angle for the oil injection outlet, the problem of unsuitable lubrication distribution structure was solved, achieving effective cooling and lubrication of high-load areas, and improving the service life and reliability of the diesel engine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUDONG HEAVY MACHINERY
- Filing Date
- 2024-10-25
- Publication Date
- 2026-04-28
AI Technical Summary
The existing lubrication distribution structure of the timing gear system in high-power diesel engines cannot select a suitable nozzle angle. Affected by other components, it cannot prioritize cooling and lubrication of high-load tooth surfaces, which affects the service life and reliability of the diesel engine.
A lubrication distribution block for the timing gear system of a high-power diesel engine is designed. It adopts a stepped structure with oil inlet and outlet holes. Combined with O-rings and fully threaded bolts, it ensures that the lubrication distribution block is in close contact with the lubricating oil passage. The oil injection outlet has a certain angle to avoid the influence of other components and directly spray into the high-load area.
It improves the lubrication of the timing gear system, reduces temperature, and extends the service life and reliability of the diesel engine.
Smart Images

Figure CN121932259A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lubrication distribution blocks for timing gear systems, specifically a lubrication distribution block for a high-power diesel engine timing gear system. Background Technology
[0002] A high-power diesel engine is an internal combustion engine that uses diesel fuel to convert heat energy into mechanical or electrical energy through combustion. Due to its high torque, long lifespan, and high fuel efficiency, high-power diesel engines are widely used in transportation, agriculture, construction and engineering, power generation and energy production, and industrial applications. High-power diesel engines feature a timing gear system, which has a complex structure. Depending on its operating conditions, it is subjected to motion impacts, tooth surface friction, and a significant amount of heat generated by frictional motion is dissipated through lubricating oil. Therefore, the quality of the timing gear system's lubrication distribution structure design directly affects the diesel engine's power, economy, and reliability.
[0003] A typical high-power diesel engine timing gear system usually consists of a crankshaft gear, a camshaft gear, and an idler gear. The crankshaft gear is mounted on the crankshaft and rotates with it. It is the driving gear in the timing gear system, providing power to the entire system. The camshaft gear is connected to the camshaft and is driven to rotate by the crankshaft gear through the timing gear system. The rotation of the camshaft drives the opening and closing of the intake and exhaust valves, thus realizing the intake and exhaust processes of the diesel engine. The idler gear in the timing gear system plays a role in transmitting power and changing the direction of transmission.
[0004] Traditional lubrication methods for high-power diesel engine timing gear systems are problematic. During engine operation, the timing gear system is subjected to high mechanical and thermal loads, making it one of the most demanding components. The commonly used single oil injection inlet design cannot select a suitable injection angle and is affected by other components, failing to prioritize cooling and lubrication of the high-load gear surfaces. This not only reduces lubrication and cooling of the gear system's moving contact surfaces and bearing support areas but also fails to maintain a low temperature and good lubrication for the timing gear system, directly impacting the overall service life and reliability of the diesel engine. Therefore, a lubrication distribution block for the timing gear system of high-power diesel engines is proposed. Summary of the Invention
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this invention provides a lubrication distribution block for the timing gear system of a high-power diesel engine, thereby solving the aforementioned technical problems of not being able to select a suitable nozzle angle and being affected by other components, making it impossible to prioritize cooling and lubrication of high-load gear surfaces.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, the present invention provides the following technical solution: a lubrication distribution block for a high-power diesel engine timing gear system, comprising:
[0009] The lubrication distribution block body, and the fully threaded bolts set at the bottom of the lubrication distribution block body, and the bottom of the lubrication distribution block body is provided with an O-ring;
[0010] A screw is provided at the center of the front side of the lubrication distribution block body, and a process hole is provided at the center of the front side of the lubrication distribution block body, and an oil inlet hole is provided in the inner cavity of the lubrication distribution block body.
[0011] Oil outlet holes are located at the center of the rear ends on both sides of the lubrication distribution block body. The lubrication distribution block body adopts a stepped structure with six holes. One side has an oil inlet hole with an O-ring groove on the mounting surface for installing O-rings to prevent oil leakage. The other side has four oil outlet holes and a process hole. The four oil outlet holes of the lubrication distribution block body have a certain angle. Four fully threaded bolts are used, and the lubrication distribution block body has four corresponding through holes for fixing. The fully threaded bolts need to be tightened to a certain torque to ensure the entire body fits tightly against the lower part of the lubricating oil passage. The O-rings are installed in the O-ring grooves of the lubrication distribution block body. In the free state, the O-rings protrude from the mounting surface to ensure a certain compression margin later. The screws are slotted flat-end set screws, installed in the process holes machined in the lubrication distribution block body, sealing the oil flow from the end. Not only does it employ an integral lubricating oil distribution block, but it also utilizes the symmetrical arrangement of the timing gear system of a V-type diesel engine, with the lubricating oil pipeline installed at the lower center without any other lubricating oil pipelines or fixed supports. Furthermore, it can be tilted to accommodate the timing gear installation position, allowing the injection outlet to have a certain angle and avoid the influence of other components. Considering the gear tooth width and the combined gear installation form, four injection outlets are arranged to directly spray onto the moving tooth surface, prioritizing cooling and lubrication of high-load areas.
[0012] Preferably, the bottom rear end of the lubrication distribution block body is designed to protrude, and the protruding portion of the lubrication distribution block body is generally circular. This results in the lubrication distribution block body having a stepped structure overall.
[0013] Preferably, the fully threaded bolt and O-ring are connected to the protruding portion of the lubrication distribution block body. The fully threaded bolt and O-ring are used in operation on the protruding portion of the lubrication distribution block body.
[0014] Preferably, the fully threaded bolts are arranged in a ring at the bottom of the protruding portion of the lubrication distribution block body, and the O-ring is located at the rear center of the bottom of the protruding portion of the lubrication distribution block body. In the free state, the O-ring protrudes from the mounting surface to ensure a certain compression margin later.
[0015] Preferably, the process hole has an internal thread, and the screw has an external thread on its outer surface, with the process hole and the screw being threadedly connected. After the oil hole of the lubrication distribution block body is machined, the screw needs to be used to seal it, ensuring that the lubricating oil is sprayed from the correct oil spray outlet. During the installation of the screw 4, glue can be applied to the threaded part to prevent loosening during subsequent operation. After the screw 4 is correctly installed, it is recessed into the mounting surface, ensuring aesthetics and durability.
[0016] Preferably, the process hole and the oil inlet hole are connected, and the oil inlet hole and the oil outlet hole are also connected. The oil inlet hole can be blocked through the process hole, while the oil in the oil inlet hole can be discharged out through the oil outlet hole.
[0017] (III) Beneficial Effects
[0018] Compared with the prior art, the present invention provides a lubrication distribution block for the timing gear system of a high-power diesel engine, which has the following beneficial effects:
[0019] This high-power diesel engine timing gear lubrication distribution block features a stepped structure with six holes. One side has an oil inlet with an O-ring groove on the mounting surface to prevent oil leakage. The other side has four oil outlets and a process hole. The four oil outlets are angled. Four threaded bolts are used, and the lubrication distribution block has four through holes for fixing. The threaded bolts need to be tightened to a certain torque to ensure that the entire block fits tightly against the bottom of the lubricating oil passage. The O-rings are installed in the O-ring grooves of the lubrication distribution block. In the free state, the O-rings protrude from the mounting surface to ensure a certain compression margin. The screws are slotted flat-end set screws installed in the process holes machined in the lubrication distribution block to seal the oil outflow from the end. Not only does it employ an integral lubricating oil distribution block, but it also utilizes the symmetrical arrangement of the timing gear system of a V-type diesel engine, with the lubricating oil pipeline installed at the lower center without any other lubricating oil pipelines or fixed supports. Furthermore, it can be tilted to accommodate the timing gear installation position, allowing the injection outlet to have a certain angle and avoid the influence of other components. Considering the gear tooth width and the combined gear installation form, four injection outlets are arranged to directly spray onto the moving tooth surface, prioritizing cooling and lubrication of high-load areas. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 This is a schematic diagram of the overall rotating structure of the present invention;
[0022] Figure 3 This is a schematic diagram of the separation structure between the lubrication distribution block body and the screw in this invention;
[0023] Figure 4This is a cross-sectional structural diagram of the lubrication distribution block body of the present invention.
[0024] In the diagram: 1. Lubrication distribution block body; 2. Fully threaded bolt; 3. O-ring; 4. Screw; 5. Process hole; 6. Oil inlet hole; 7. Oil outlet hole. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] This invention provides a technical solution: a lubrication distribution block for the timing gear system of a high-power diesel engine, comprising: (See attached diagram) Figure 1 , Figure 2 The lubrication distribution block body 1, and the fully threaded bolt 2 set at the bottom of the lubrication distribution block body 1, and the bottom of the lubrication distribution block body 1 is provided with an O-ring 3;
[0027] Please see Figure 3 Screw 4 is located at the center of the front side of the lubrication distribution block body 1, and a process hole 5 is provided at the center of the front side of the lubrication distribution block body 1, and an oil inlet hole 6 is provided in the inner cavity of the lubrication distribution block body 1.
[0028] Oil outlet holes 7 are located at the center of the rear ends on both sides of the lubrication distribution block body 1. The lubrication distribution block body 1 adopts a stepped structure with six holes in total. One side has an oil inlet hole 6 with an O-ring groove on the mounting surface for installing O-rings 3 to prevent lubricating oil leakage. The other side has four oil outlet holes 7 and a process hole 5. The four oil outlet holes 7 of the lubrication distribution block body 1 have a certain angle. There are four fully threaded bolts 2, and the lubrication distribution block body 1 has four through holes for fixing. The fully threaded bolts 2 need to be tightened to a certain torque to ensure that the entire body is tightly attached to the bottom of the lubricating oil passage. The O-rings 3 are installed in the O-ring groove of the lubrication distribution block body 1. In the free state, the O-rings 3 protrude from the mounting surface to ensure a certain compression margin. The screws 4 are slotted flat-end set screws, installed in the process hole 5 machined in the lubrication distribution block body 1, and seal the lubricating oil outflow from the end. Not only does it employ an integral lubricating oil distribution block, but it also utilizes the symmetrical arrangement of the timing gear system of a V-type diesel engine, with the lubricating oil pipeline installed at the lower center without any other lubricating oil pipelines or fixed supports. Furthermore, it can be tilted to accommodate the timing gear installation position, allowing the injection outlet to have a certain angle and avoid the influence of other components. Considering the gear tooth width and the combined gear installation form, four injection outlets are arranged to directly spray onto the moving tooth surface, prioritizing cooling and lubrication of high-load areas.
[0029] Please see Figure 2 The bottom rear end of the lubrication distribution block body 1 has a protruding design, and the protruding part of the lubrication distribution block body 1 is circular. This gives the lubrication distribution block body 1 a stepped structure. Fully threaded bolts 2 and O-rings 3 are connected to the protruding part of the lubrication distribution block body 1. The fully threaded bolts 2 and O-rings 3 are used in operation on the protruding part of the lubrication distribution block body 1. The fully threaded bolts 2 are arranged in a ring at the bottom of the protruding part of the lubrication distribution block body 1, and the O-rings 3 are located at the center rear end of the bottom of the protruding part of the lubrication distribution block body 1. In the free state, the O-rings 3 protrude from the mounting surface to ensure a certain compression margin later.
[0030] Please see Figure 4 The process hole 5 has an internal thread, and the screw 4 has an external thread on its outer surface, forming a threaded connection between the process hole 5 and the screw 4. After the oil hole machining is completed on the lubrication distribution block body 1, the screw 4 needs to be used to seal it, ensuring that the lubricating oil is sprayed out from the correct oil spray outlet. Adhesive can be applied to the threaded part during the installation of the screw 4 to prevent loosening during subsequent operation. After correct installation, the screw 4 is recessed into the mounting surface, ensuring aesthetics and durability. The process hole 5 is connected to the oil inlet hole 6, and the oil inlet hole 6 is connected to the oil outlet hole 7. The oil inlet hole 6 can be sealed through the process hole 5, and the oil in the oil inlet hole 6 can be discharged out through the oil outlet hole 7.
[0031] This solution: The lubrication distribution block body 1 adopts a stepped structure with six holes. One side has an oil inlet hole 6 and an O-ring groove on the mounting surface for installing O-rings 3 to prevent lubricating oil leakage. The other side has four oil outlet holes 7 and a process hole 5. The four oil outlet holes 7 of the lubrication distribution block body 1 have a certain angle. There are four fully threaded bolts 2, and the lubrication distribution block body 1 has four through holes for fixing. The fully threaded bolts 2 need to be tightened to a certain torque to ensure that the entire body is tightly attached to the bottom of the lubricating oil passage. The O-rings 3 are installed in the O-ring groove of the lubrication distribution block body 1. In the free state, the O-rings 3 protrude from the mounting surface to ensure a certain compression margin. The screws 4 are slotted flat-end set screws, which are installed in the process hole 5 machined in the lubrication distribution block body 1 to seal the lubricating oil outflow from the end.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lubrication distribution block for the timing gear system of a high-power diesel engine, characterized in that, include: The lubrication distribution block body (1) and the fully threaded bolt (2) provided at the bottom of the lubrication distribution block body (1), and the bottom of the lubrication distribution block body (1) is provided with an O-ring (3); Screw (4) is located at the center of the front of the lubrication distribution block body (1), and a process hole (5) is provided at the center of the front of the lubrication distribution block body (1), and an oil inlet hole (6) is provided in the inner cavity of the lubrication distribution block body (1). Oil outlet (7) is located at the center of the rear ends of both sides of the lubrication distribution block body (1).
2. The lubrication distribution block for a high-power diesel engine timing gear system according to claim 1, characterized in that: The bottom rear end of the lubrication distribution block body (1) is designed to protrude, and the protruding part of the lubrication distribution block body (1) is designed to be circular.
3. The lubrication distribution block for a high-power diesel engine timing gear system according to claim 2, characterized in that: The fully threaded bolt (2) and O-ring (3) are connected to the protruding part of the lubrication distribution block body (1).
4. A lubrication distribution block for a high-power diesel engine timing gear system according to claim 3, characterized in that: The fully threaded bolts (2) are arranged in a ring at the bottom of the protruding part of the lubrication distribution block body (1), and the O-ring (3) is located at the rear end of the center of the bottom of the protruding part of the lubrication distribution block body (1).
5. A lubrication distribution block for a high-power diesel engine timing gear system according to claim 1, characterized in that: The process hole (5) has an internal thread inside, and the screw (4) has an external thread on its outer surface. The process hole (5) and the screw (4) are threaded together.
6. A lubrication distribution block for a high-power diesel engine timing gear system according to claim 1, characterized in that: The process hole (5) is connected to the oil inlet hole (6), and the oil inlet hole (6) is connected to the oil outlet hole (7).