Diesel engine cylinder cover with high sealing performance
By adopting a combined structure of sealing bolts, sealing plates, sealing gaskets and positioning columns on the diesel engine cylinder head, the problem of poor sealing of the cylinder head is solved, achieving higher sealing and more stable engine performance.
Patent Information
- Application Number
- CN202421467352.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The diesel engine cylinder head is prone to poor sealing in harsh working environments, which will affect the engine performance.
A diesel engine cylinder head with high sealing properties is designed, and a combined structure of sealing bolts, sealing plates, sealing gaskets and positioning columns is adopted. Through the design of sealing grooves and oil injection holes, the sealing between the cylinder head and the cylinder connecting member is increased, and the oil is cooled and sealed through the cooling chamber and coolant.
It effectively avoids the tiny gap between the cylinder head and the cylinder block, improves the sealing effect of the cylinder head, and enhances the performance stability of the engine.
Smart Images
Figure CN222558633U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to a diesel engine cylinder cover with high sealing performance. Background Art
[0002] The cylinder head of a diesel engine is installed on top of the cylinder block, sealing the cylinder from the top and forming a combustion chamber. It is often in contact with high-temperature and high-pressure combustion gas, and therefore bears large thermal and mechanical loads. A cooling water jacket is provided inside the cylinder head of a water-cooled engine. The cooling water holes on the lower end face of the cylinder head are connected to the cooling water holes of the cylinder block, and circulating water is used to cool high-temperature parts such as the combustion chamber.
[0003] The traditional diesel engine cylinder head sealing method mainly relies on the tightening force of the cylinder head bolts and the matching accuracy of the contact surface between the cylinder head and the cylinder body. In actual use, due to the harsh working environment of the engine, such as high temperature, high pressure, vibration and other factors, a small gap often appears at the connection between the cylinder head and the cylinder body, causing poor sealing problems, which can easily affect the performance of the engine. Therefore, we propose a diesel engine cylinder head with high sealing performance. Utility Model Content
[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a diesel engine cylinder head with high sealing performance, which can solve the problem of poor sealing caused by a small gap between the cylinder head and the cylinder body due to the harsh working environment of the engine, such as high temperature, high pressure, vibration and other factors in actual use, thereby easily affecting the performance of the engine.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a diesel engine cylinder head with high sealing performance, comprising:
[0006] The cylinder head has a cylinder body connector fixedly mounted on the bottom of the cylinder head, and a plurality of fixing cylinders for bolt mounting are fixedly connected on both sides of the cylinder head and the cylinder body connector;
[0007] A sealing installation structure, the sealing installation structure is located on the cylinder head;
[0008] The sealing installation structure includes four positioning columns, a sealing plate and two sealing bolts. A sealing groove is provided at the bottom of the cylinder head. The four positioning columns are fixedly connected to the inner top wall of the sealing groove. Oil filling holes connected to the inside of the sealing groove are provided on both sides of the cylinder head. The two sealing bolts are threadedly connected to the corresponding oil filling holes. The sealing plate is fixedly connected to the top of the cylinder body connector, and the sealing plate is slidably connected to the sealing groove.
[0009] Preferably, four positioning holes are opened on the top of the sealing plate, and four positioning columns are plugged into the corresponding positioning holes. A sealing gasket is fixedly connected to the top of the cylinder body connector, and a plurality of through holes are opened on the outer surface of the sealing plate.
[0010] Preferably, a cooling cavity is formed on the side wall of the cylinder head, and coolant holes communicating with the interior of the cooling cavity are formed on both sides of the cylinder head.
[0011] Preferably, a plurality of mounting holes are formed on the top of the cylinder cover, and sealing rings are fixedly connected inside the plurality of mounting holes.
[0012] Preferably, a plurality of cooling water holes are provided on the top of the cylinder cover.
[0013] Preferably, a plurality of valve guide openings are provided on the top of the cylinder head.
[0014] Compared with the prior art, the utility model has the following beneficial effects: the diesel engine cylinder head with high sealing performance, through the cooperation of sealing bolts, sealing plates, sealing gaskets and positioning columns, enables the positioning columns to be plugged into the positioning holes, thereby facilitating the rapid installation of the cylinder head on the cylinder body connector, so that the sealing liquid can be discharged from the oil filling hole into the sealing groove, thereby increasing the sealing performance between the cylinder head and the cylinder body connector, avoiding the appearance of a small gap at the connection between the cylinder head and the cylinder body connector, and further improving the sealing effect of the cylinder head. The diesel engine cylinder head with high sealing performance, through the cooling cavity provided, enables the coolant in the cooling cavity to cool the sealing oil in the sealing groove, thereby facilitating the improvement of the use effect of the sealing liquid. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 This is a schematic diagram of the fixed cylinder structure of the utility model;
[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the cylinder head of the utility model;
[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the cylinder connecting piece of the utility model.
[0020] Figure numerals: 1. cylinder body connector; 2. cylinder head; 3. fixing cylinder; 4. cooling water hole; 5. mounting hole; 6. sealing bolt; 7. coolant hole; 8. positioning hole; 9. valve guide opening; 10. positioning column; 11. sealing groove; 12. sealing plate; 13. through hole; 14. sealing gasket; 15. cooling chamber; 16. oil filling hole. DETAILED DESCRIPTION
[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model. In the description of the utility model, it should be understood that the directions or positional relationships indicated by the description of the orientation, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the utility model 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 the utility model.
[0022] In the description of the present utility model, greater than, less than, and exceeding are understood as not including the number itself, and above, below, and within are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features, and it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of the indicated technical features. In the description of the present utility model, unless otherwise clearly defined, the terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in the present utility model in combination with the specific content of the technical solution.
[0023] See also Figure 1-4 The utility model provides a technical solution: a diesel engine cylinder head with high sealing performance, comprising:
[0024] A cylinder head 2, a cylinder body connecting piece 1 is fixedly installed at the bottom of the cylinder head 2, and a plurality of fixing cylinders 3 for bolt installation are fixedly connected to both sides of the cylinder head 2 and the cylinder body connecting piece 1;
[0025] A sealing installation structure, the sealing installation structure is located on the cylinder head 2;
[0026] The sealing installation structure includes four positioning columns 10, a sealing plate 12 and two sealing bolts 6. A sealing groove 11 is provided at the bottom of the cylinder head 2. The four positioning columns 10 are fixedly connected to the inner top wall of the sealing groove 11. Oil filling holes 16 connected to the inside of the sealing groove 11 are provided on both sides of the cylinder head 2. The two sealing bolts 6 are threadedly connected in the corresponding oil filling holes 16. The sealing plate 12 is fixedly connected to the top of the cylinder body connector 1, and the sealing plate 12 is slidably connected to the sealing groove 11.
[0027] The top of the sealing plate 12 is provided with four positioning holes 8, and the four positioning columns 10 are plugged into the corresponding positioning holes 8. The top of the cylinder body connector 1 is fixedly connected with a sealing gasket 14. The outer surface of the sealing plate 12 is provided with a plurality of through holes 13. The side wall of the cylinder head 2 is provided with a cooling cavity 15. Both sides of the cylinder head 2 are provided with coolant holes 7 that are connected to the inside of the cooling cavity 15. The sealing gasket 14 is located under the sealing plate 12.
[0028] A plurality of mounting holes 5 are provided on the top of the cylinder head 2 , and sealing rings are fixedly connected inside the plurality of mounting holes 5 . A plurality of cooling water holes 4 are provided on the top of the cylinder head 2 , and a plurality of valve guide openings 9 are provided on the top of the cylinder head 2 .
[0029] Furthermore, when using the device, by installing the cylinder head 2 on the cylinder body connector 1, the four positioning columns 10 are correspondingly plugged into the four positioning holes 8 on the sealing plate 12, thereby facilitating the installation of the cylinder head 2 on the cylinder body connector 1 by bolts. Subsequently, the sealing bolts 6 are removed, thereby facilitating the discharge of the sealing oil from the oil filling hole 16 into the sealing groove 11, thereby increasing the sealing between the cylinder head 2 and the cylinder body connector 1, and by adding coolant into the cooling chamber 15 from the coolant hole 7, the coolant cools down the sealing oil in the sealing groove 11, thereby reducing the temperature of the sealing oil in the sealing groove 11.
[0030] Through the cooperation of the sealing bolt 6, the sealing plate 12, the sealing gasket 14 and the positioning column 10, the positioning column 10 is plugged into the positioning hole 8, so that the cylinder head 2 can be quickly installed on the cylinder body connector 1, so that the sealing liquid can be discharged into the sealing groove 11 from the oil filling hole 16, thereby increasing the sealing between the cylinder head 2 and the cylinder body connector 1, avoiding the occurrence of a small gap at the connection between the cylinder head 2 and the cylinder body connector 1, and further improving the sealing effect of the cylinder head 2.
[0031] By providing the cooling chamber 15 , the coolant in the cooling chamber 15 can cool down the sealing oil in the sealing groove 11 , thereby facilitating improving the use effect of the sealing liquid.
[0032] Working principle: By installing the cylinder head 2 on the cylinder block connector 1, the four positioning columns 10 are correspondingly plugged into the four positioning holes 8 on the sealing plate 12, so that the cylinder head 2 is conveniently installed on the cylinder block connector 1 by bolts. Subsequently, the sealing bolts 6 are removed, so that the sealing oil is conveniently discharged into the sealing groove 11 from the oil filling hole 16, thereby increasing the sealing between the cylinder head 2 and the cylinder block connector 1, and the coolant is added into the cooling chamber 15 from the coolant hole 7, so that the coolant cools down the sealing oil in the sealing groove 11, thereby reducing the temperature of the sealing oil in the sealing groove 11.
[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A diesel engine cylinder head with high sealing performance, characterized in that: include: A cylinder head (2), a cylinder body connecting piece (1) being fixedly mounted on the bottom of the cylinder head (2), and a plurality of fixing cylinders (3) for bolt mounting being fixedly connected to both sides of the cylinder head (2) and the cylinder body connecting piece (1); A sealing installation structure, the sealing installation structure being located on the cylinder head (2); The sealing installation structure comprises four positioning columns (10), a sealing plate (12) and two sealing bolts (6); a sealing groove (11) is provided at the bottom of the cylinder cover (2); and the four positioning columns (10) are fixedly connected to the inner top wall of the sealing groove (11); Wherein, both sides of the cylinder cover (2) are provided with oil filling holes (16) which are in communication with the interior of the sealing groove (11), and the two sealing bolts (6) are threadedly connected in the corresponding oil filling holes (16); The sealing plate (12) is fixedly connected to the top of the cylinder connecting member (1), and the sealing plate (12) is slidably connected to the sealing groove (11).
2. A diesel engine cylinder head with high sealing performance according to claim 1, characterized in that: Four positioning holes (8) are formed on the top of the sealing plate (12), and the four positioning posts (10) are plugged into the corresponding positioning holes (8); A sealing gasket (14) is fixedly connected to the top of the cylinder connecting piece (1), and a plurality of through holes (13) are formed on the outer surface of the sealing plate (12).
3. A diesel engine cylinder head with high sealing performance according to claim 1, characterized in that: A cooling cavity (15) is provided on the side wall of the cylinder head (2), and cooling liquid holes (7) communicating with the interior of the cooling cavity (15) are provided on both sides of the cylinder head (2).
4. A diesel engine cylinder head with high sealing performance according to claim 1, characterized in that: A plurality of mounting holes (5) are provided on the top of the cylinder cover (2), and sealing rings are fixedly connected inside the plurality of mounting holes (5).
5. A diesel engine cylinder head with high sealing performance according to claim 1, characterized in that: A plurality of cooling water holes (4) are provided on the top of the cylinder head (2).
6. A diesel engine cylinder head with high sealing performance according to claim 1, characterized in that: A plurality of valve guide openings (9) are provided on the top of the cylinder head (2).