Four-valve diesel engine cylinder cover
By using a docking structure filled with plastic rings, rubber seal rings, connecting rings and metal expansion joints on the diesel engine cylinder head, combined with the support structure, the problem of sealing connection failure caused by mechanical fatigue of the diesel engine cylinder head is solved, and a stable and long Effective sealing effect and mechanical fatigue reduction effect.
Patent Information
- Application Number
- CN202421243297.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The cylinder heads of existing diesel engines are prone to failure of sealing connections due to mechanical fatigue during long-term temperature changes, which in turn leads to air leakage problems.
A four-valve diesel engine cylinder head is designed, using a butt structure composed of a filled plastic ring, a rubber seal ring, a connecting ring and a metal expansion joint, and the stability of the connection is improved through the support structure to adapt to the expansion or contraction of temperature changes.
Through this design, the cylinder head structure can be connected stably and long-term to prevent air leakage, and reduce mechanical fatigue and cavitation through the expansion function of the metal expansion joint.
Smart Images
Figure CN222501896U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of diesel engines, in particular to a cylinder head of a four-valve diesel engine. Background Art
[0002] An engine is a machine that can convert other forms of energy into mechanical energy. A diesel engine is a type of engine. A diesel engine is an engine that burns diesel to obtain energy release. The advantages of a diesel engine are large torque and good economic performance. The working process of a diesel engine has many similarities with a gasoline engine. Each working cycle also undergoes four strokes: intake, compression, power, and exhaust. The diesel engine cylinder head is one of the important parts of the engine, but the existing diesel engine cylinder head has certain inconveniences when used. For example, the valve seat and cylinder head of the diesel engine cylinder head in the prior art are generally connected by a rigid sealing connection, but the impact caused by long-term temperature changes will cause mechanical fatigue. Utility Model Content
[0003] In view of the problems in the related technology, the utility model proposes a four-valve diesel engine cylinder head to overcome the above technical problems existing in the existing related technology.
[0004] To this end, the specific technical solutions adopted by the utility model are as follows:
[0005] A four-valve diesel engine cylinder head comprises a cylinder head structure, wherein the cylinder head structure is connected to a docking structure, a supporting structure is arranged around the docking structure, the cylinder head structure comprises a cylinder head body, an intake valve and a valve seat, an intake valve is arranged on one side of the cylinder head body, a valve seat is arranged at one end of the cylinder head body, and the valve seat is connected to the docking structure.
[0006] Furthermore, the docking structure includes a filling plastic ring, a rubber sealing ring, a connecting ring, and a metal expansion joint, and the rubber sealing ring is embedded on the circumference of the filling plastic ring.
[0007] Furthermore, a connecting ring is fixedly connected to the bottom end of the filling plastic ring, and a metal expansion joint is fixedly connected to the connecting ring.
[0008] Furthermore, the support structure includes a first connecting seat, a first elastic connecting rod, a first fixed seat, a first supporting link, a transverse link, a second supporting link, a second connecting seat, a second fixed seat, and a second elastic connecting rod, and one end of the first connecting seat is fixedly connected to the first elastic connecting rod.
[0009] Furthermore, the other end of the first elastic connecting rod is fixedly connected to a first fixing seat, and the first elastic connecting rod is fixedly connected to a first supporting connecting rod at one end side close to the first connecting seat.
[0010] Furthermore, one end of the first supporting link away from the first connecting seat is fixedly connected to the second elastic connecting rod, one end of the second elastic connecting rod is fixedly connected to the second connecting seat, and the other end of the second elastic connecting rod is fixedly connected to the second fixing seat.
[0011] Furthermore, the second elastic connecting rod is fixedly connected to a second supporting connecting rod at one side close to the end of the second fixing seat, and a transverse connecting rod is fixedly connected between the second supporting connecting rod and the first supporting connecting rod.
[0012] The beneficial effect of the utility model is that the cylinder cover structure provided by the utility model can be connected to the cylinder head through the docking structure, and while forming a closed space, a certain expansion function can be provided through the connecting structure, thereby performing slight expansion or contraction to adapt to temperature changes. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a schematic diagram of the main structure of a four-valve diesel engine cylinder head according to an embodiment of the utility model;
[0015] Figure 2 It is a connection diagram of a docking structure support structure of a cylinder head of a four-valve diesel engine according to an embodiment of the utility model;
[0016] Figure 3 It is a schematic diagram of the docking structure of a cylinder head of a four-valve diesel engine according to an embodiment of the utility model;
[0017] Figure 4 It is a schematic diagram of a supporting structure of a cylinder head of a four-valve diesel engine according to an embodiment of the utility model.
[0018] In the figure:
[0019] 1. Cylinder head structure; 101. Cylinder head body; 102. Intake valve; 103. Valve seat; 2. Docking structure; 201. Filling plastic ring; 202. Rubber sealing ring; 203. Connecting ring; 204. Metal expansion joint; 3. Support structure; 301. First connecting seat; 302. First elastic connecting rod; 303. First fixed seat; 304. First supporting connecting rod; 305. Transverse connecting rod; 306. Second supporting connecting rod; 307. Second connecting seat; 308. Second fixed seat; 309. Second elastic connecting rod. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] According to an embodiment of the utility model, a four-valve diesel engine cylinder head is provided.
[0022] Embodiment 1;
[0023] like Figure 1-4 As shown, a four-valve diesel engine cylinder head according to an embodiment of the utility model includes a cylinder head structure 1, the cylinder head structure 1 is connected to a docking structure 2, a supporting structure 3 is provided on the peripheral side of the docking structure 2, the cylinder head structure 1 includes a cylinder head body 101, an intake valve 102, and a valve seat 103, an intake valve 102 is provided on one side of the cylinder head body 101, a valve seat 103 is provided at one end of the cylinder head body 101, and the valve seat 103 is connected to the docking structure 2.
[0024] The cylinder head structure 1 is sealed and docked with the cylinder head through the docking structure 2, and the support structure 3 improves the stability of the connection, so that the docking structure 2 can be stably and permanently connected between the valve seat 103 and the cylinder head to prevent air leakage.
[0025] The docking structure 2 includes a filling plastic ring 201, a rubber sealing ring 202, a connecting ring 203, and a metal expansion joint 204. The rubber sealing ring 202 is embedded on the circumference of the filling plastic ring 201, the bottom end of the filling plastic ring 201 is fixedly connected to the connecting ring 203, and the connecting ring 203 is fixedly connected to the metal expansion joint 204.
[0026] An embedded ring is provided on the peripheral side of the valve seat 103 of the cylinder head structure 1, and a filling plastic ring 201 can be inserted into the embedded ring. The rubber sealing ring 202 of the filling plastic ring 201 can improve the sealing effect. The connecting ring 203 is used for connecting the metal expansion joint 204 with the filling plastic ring 201. The metal expansion joint 204 itself has a certain expansion function. It is made of aluminum alloy and has a good expansion buffer function, which can reduce mechanical fatigue caused by hard contact and reduce cavitation.
[0027] The supporting structure 3 includes a first connecting seat 301, a first elastic connecting rod 302, a first fixed seat 303, a first supporting connecting rod 304, a transverse connecting rod 305, a second supporting connecting rod 306, a second connecting seat 307, a second fixed seat 308, and a second elastic connecting rod 309. One end of the first connecting seat 301 is fixedly connected to the first elastic connecting rod 302, and the other end of the first elastic connecting rod 302 is fixedly connected to the first fixed seat 303. The first elastic connecting rod 302 is fixedly connected to the first fixed seat 303 at one end near the first connecting seat 301. There is a first supporting link 304, one end of the first supporting link 304 away from the first connecting seat 301 is fixedly connected to the second elastic connecting rod 309, one end of the second elastic connecting rod 309 is fixedly connected to the second connecting seat 307, the other end of the second elastic connecting rod 309 is fixedly connected to the second fixed seat 308, the second elastic connecting rod 309 is fixedly connected to the second supporting link 306 on one side close to the end of the second fixed seat 308, and a transverse connecting rod 305 is fixedly connected between the second supporting link 306 and the first supporting link 304.
[0028] The first connecting seat 301 and the second connecting seat 307 of the supporting structure 3 are respectively connected to the circumferential sides of the connecting ring 203 at both ends of the metal expansion joint 204, and the first fixed seat 303 and the second fixed seat 308 are respectively fixedly connected to the circumferential sides of the cylinder head and the valve seat 103, and the first elastic connecting rod 302 and the second elastic connecting rod 309 are respectively used to connect the first connecting seat 301 and the first fixed seat 303 and the second connecting seat 307 and the second fixed seat 308, so that the connecting seats and the fixed seats have a certain elastic connectivity, further improving the expansion and contraction adjustment function, and at the same time, the supporting connecting rod and the connected transverse connecting rod 305 can improve the connection strength of adjacent connecting seats and fixed seats, and improve the connection stability.
[0029] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.
[0030] In summary, with the aid of the above technical solution of the utility model, the cylinder head structure 1 is sealed and docked with the cylinder head through the docking structure 2, and the support structure 3 improves the stability of the connection, so that the docking structure 2 can be stably and permanently connected between the valve seat 103 and the cylinder head to prevent air leakage. An embedded ring is provided on the peripheral side of the valve seat 103 of the cylinder head structure 1, and a filling plastic ring 201 can be inserted into the embedded ring. The rubber sealing ring 202 of the filling plastic ring 201 can improve the sealing effect. The connecting ring 203 is used for the docking of the metal expansion joint 204 and the filling plastic ring 201. The metal expansion joint 204 itself has a certain expansion function. It is made of aluminum alloy and has a good expansion buffer function, which reduces the mechanical fatigue caused by hard contact. To reduce cavitation, the first connecting seat 301 and the second connecting seat 307 of the supporting structure 3 are respectively connected to the circumference of the connecting ring 203 at both ends of the metal expansion joint 204, and the first fixed seat 303 and the second fixed seat 308 are respectively fixedly connected to the circumference of the cylinder head and the valve seat 103, and the first elastic connecting rod 302 and the second elastic connecting rod 309 are respectively used to connect the first connecting seat 301 and the first fixed seat 303 and the second connecting seat 307 and the second fixed seat 308, so that the connecting seats and the fixed seats have a certain elastic connectivity, further improving the expansion and contraction adjustment function, and at the same time, the supporting connecting rod and the connected transverse connecting rod 305 can improve the connection strength of adjacent connecting seats and fixed seats, and improve the connection stability.
[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A four-valve diesel engine cylinder head, characterized in that: The invention comprises a cylinder head structure (1), wherein the cylinder head structure (1) is connected to a docking structure (2), a supporting structure (3) is provided on the peripheral side of the docking structure (2), the cylinder head structure (1) comprises a cylinder head body (101), an intake valve (102), and a valve seat (103), an intake valve (102) is provided on one side of the cylinder head body (101), a valve seat (103) is provided on one end of the cylinder head body (101), and the valve seat (103) is connected to the docking structure (2).
2. A four-valve diesel engine cylinder head according to claim 1, characterized in that: The docking structure (2) comprises a filling plastic ring (201), a rubber sealing ring (202), a connecting ring (203), and a metal expansion joint (204); the filling plastic ring (201) is embedded with a rubber sealing ring (202) on its circumference.
3. A four-valve diesel engine cylinder head according to claim 2, characterized in that: The bottom end of the filling plastic ring (201) is fixedly connected to a connecting ring (203), and a metal expansion joint (204) is fixedly connected to the connecting ring (203).
4. A four-valve diesel engine cylinder head according to claim 3, characterized in that: The support structure (3) comprises a first connecting seat (301), a first elastic connecting rod (302), a first fixed seat (303), a first supporting connecting rod (304), a transverse connecting rod (305), a second supporting connecting rod (306), a second connecting seat (307), a second fixed seat (308), and a second elastic connecting rod (309); one end of the first connecting seat (301) is fixedly connected to the first elastic connecting rod (302).
5. A four-valve diesel engine cylinder head according to claim 4, characterized in that: The other end of the first elastic connecting rod (302) is fixedly connected to a first fixing seat (303), and the first elastic connecting rod (302) is fixedly connected to a first supporting connecting rod (304) on one side of the end portion close to the first connecting seat (301).
6. A four-valve diesel engine cylinder head according to claim 5, characterized in that: One end of the first supporting connecting rod (304) away from the first connecting seat (301) is fixedly connected to a second elastic connecting rod (309), one end of the second elastic connecting rod (309) is fixedly connected to a second connecting seat (307), and the other end of the second elastic connecting rod (309) is fixedly connected to a second fixed seat (308).
7. A four-valve diesel engine cylinder head according to claim 6, characterized in that: The second elastic connecting rod (309) is fixedly connected to a second supporting connecting rod (306) on one side close to the end of the second fixing seat (308), and a transverse connecting rod (305) is fixedly connected between the second supporting connecting rod (306) and the first supporting connecting rod (304).