Cylinder cover structure capable of improving detonation pressure resistance and prolonging service life
By using a combination of cast iron inserts and aluminum alloy shells in the cylinder head structure, the problems of cylinder head deformation and low heat dissipation efficiency under high temperature and high pressure are solved, achieving high temperature stability, lightweight and efficient heat dissipation of the cylinder head, thereby improving engine performance and durability.
Patent Information
- Application Number
- CN202511408523.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2025-11-28
AI Technical Summary
Existing cylinder head structures are prone to softening and deformation under high temperature and pressure conditions, leading to poor sealing of valve seats and injector holes, affecting engine performance and durability. Aluminum alloy cylinder heads are heavy and have low heat dissipation efficiency, while cast iron cylinder heads have low heat dissipation efficiency and are prone to overheating and knocking.
Cast iron inserts replace the exhaust valve seat, intake valve seat, and fuel injector orifice, forming an integrated structure with an aluminum alloy shell. The cast iron inserts improve high-temperature resistance, while the aluminum alloy shell provides rapid heat dissipation, forming an internal cast iron insert surrounded by an aluminum alloy structure.
Improve the cylinder head's resistance to knock pressure and extend its lifespan, reduce knocking, maintain the stability of critical components, and simultaneously achieve lightweight design and efficient heat dissipation to enhance engine performance.
Smart Images
Figure CN121024787A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of automobile cylinder head, in particular to a cylinder head structure for improving anti-blast pressure and service life. BACKGROUND
[0002] The cylinder head is an important component of the engine, and its main function is to close the top of the cylinder and form a combustion chamber together with the cylinder block. The cylinder head is equipped with a valve train, including intake valves and exhaust valves, which are responsible for introducing fuel into the engine and expelling exhaust gases. In order to improve the intake and exhaust efficiency, modern engines often use multi-valve technology, and the common design is to equip each cylinder with 4 valves, and a 4-cylinder engine has a total of 16 valves. This multi-valve structure helps to form a compact combustion chamber, making the fuel-air mixture burn more quickly and uniformly, thereby improving the power and efficiency of the engine.
[0003] However, the existing cylinder head structure for improving anti-blast pressure and service life has the following problems in use: when the power of the engine is improved, the blast pressure and the combustion temperature are also increased, but the aluminum alloy cylinder head will soften and deform in the long-term high-pressure and high-temperature environment, thereby affecting the sealing of the valve seat ring, the oil injector hole and other parts. The cast iron cylinder head has the problems of large weight and low heat dissipation efficiency: the thermal conductivity coefficient of cast iron (about 54 W / m·K) is only 1 / 3 of that of aluminum alloy (about 150 W / m·K), which easily leads to local overheating and may cause knock or thermal deformation, affecting the performance and durability of the engine. SUMMARY
[0004] The purpose of the present application is to provide a cylinder head structure for improving anti-blast pressure and service life to solve the problems mentioned in the background.
[0005] To solve the above technical problems, the present application provides the following technical scheme: a cylinder head structure for improving anti-blast pressure and service life, comprising a cylinder head iron insert assembly, an aluminum shell assembly and an oil injector hole, the aluminum shell assembly is internally provided with a mounting hole, the cylinder head iron insert assembly is embedded in the aluminum shell assembly through the mounting hole, and an oil injector hole is provided at the central position of the cylinder head iron insert assembly, the top end of the cylinder head iron insert assembly is provided with an exhaust valve seat and an intake valve seat, the top end of the cylinder head iron insert assembly is provided with a bolt column, and the inside of the bolt is provided with an iron cylinder head bolt hole.
[0006] As a preferred scheme of the present application, the cylinder head iron insert assembly and the aluminum shell assembly are connected by one-piece casting.
[0007] As a preferred scheme of the present application, the exhaust valve seat, the intake valve seat and the oil injector hole inner wall are all reinforced by an iron ring body.
[0008] The cylinder head structure of the application has the advantages of improving the anti-blast pressure and the service life The application improves the high-temperature resistance and stability of the high-temperature and high-pressure area by replacing the high-temperature parts of the exhaust valve seat, the intake valve seat and the oil injector hole with cast iron inserts, and the periphery is wrapped with an aluminum shell assembly to achieve rapid heat dissipation, improve the cylinder head anti-blast pressure, and ensure the stability of the key part structure while providing very fast heat dissipation, reducing knock, thereby improving the service life of the cylinder head, improving the performance of the aero-engine, making the cylinder head structure more resistant to high temperature and high pressure, but also taking into account the lightweight, and the advantage of the aluminum alloy cylinder head is rapid heat dissipation, reducing the combustion chamber temperature, reducing knock and lightweight. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 Fig. 1 is a perspective view of the iron insert assembly of the cylinder head of the application; Figure 2 Fig. 2 is a perspective view of the aluminum shell assembly of the application; Figure 3 Fig. 3 is an assembly perspective view of the iron insert assembly and the aluminum shell assembly of the cylinder head of the application; Figure 4 Fig. 4 is a front view of the structure of the application.
[0010] In the figure: 1, iron insert assembly of the cylinder head; 2, aluminum shell assembly; 3, iron cylinder head bolt hole; 4, exhaust valve seat; 5, intake valve seat; 6, oil injector hole. DETAILED DESCRIPTION
[0011] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.
[0012] Example 1, as Figures 1-2As shown, the present application provides a technical solution: a cylinder head structure for improving anti-blast pressure and service life, comprising a cylinder head iron insert assembly 1, an aluminum shell assembly 2 and an oil injector hole 6, the aluminum shell assembly 2 is internally provided with a mounting hole, the aluminum shell assembly 2 is internally embedded with the cylinder head iron insert assembly 1 through the mounting hole, and the central position of the cylinder head iron insert assembly 1 is internally provided with the oil injector hole 6, the top end of the cylinder head iron insert assembly 1 is provided with an exhaust valve seat 4 and an intake valve seat 5, the top end of the cylinder head iron insert assembly 1 is provided with a bolt column, and the inside of the bolt is provided with an iron cylinder head bolt hole 3, the cylinder head iron insert assembly 1 and the aluminum shell assembly 2 are integrally cast connected, the inner walls of the exhaust valve seat 4, the intake valve seat 5 and the oil injector hole 6 are all reinforced with iron rings to prevent the aluminum cylinder head from softening under long-term high temperature, causing the valve seat ring and the oil injector hole 6 to be deformed due to heat, resulting in poor valve sealing, so the high-temperature part of the exhaust valve seat 4, the intake valve seat 5 and the oil injector hole 6 is replaced with a cast iron insert to improve the high-temperature resistance and stability of the high-temperature and high-pressure area, and the periphery is wrapped with the aluminum shell assembly 2 to achieve rapid heat dissipation and weight reduction, thereby forming a cylinder head structure with a cast iron insert embedded in the exhaust valve seat 4, the intake valve seat 5 and the oil injector hole 6, and an aluminum alloy periphery, the cast iron insert includes the exhaust valve seat 4, the intake valve seat 5 and the oil injector hole 6, which can ensure the stability of the valve seat and the oil injector hole 6, avoid deformation under high load, and at the same time the aluminum alloy periphery can provide good heat dissipation and light weight, thereby improving the service life of the cylinder head under high performance.
[0013] Working principle: first, to prevent the aluminum cylinder head from softening under long-term high temperature, causing the valve seat ring and the oil injector hole 6 to be deformed due to heat, resulting in poor valve sealing, so the high-temperature part of the exhaust valve seat 4, the intake valve seat 5 and the oil injector hole 6 is replaced with a cast iron insert to improve the high-temperature resistance and stability of the high-temperature and high-pressure area, and the periphery is wrapped with the aluminum shell assembly 2 to achieve rapid heat dissipation and weight reduction, thereby forming a cylinder head structure with a cast iron insert embedded in the exhaust valve seat 4, the intake valve seat 5 and the oil injector hole 6, and an aluminum alloy periphery, the cast iron insert includes the exhaust valve seat 4, the intake valve seat 5 and the oil injector hole 6, which can ensure the stability of the valve seat and the oil injector hole 6, avoid deformation under high load, and at the same time the aluminum alloy periphery can provide good heat dissipation and light weight, thereby improving the service life of the cylinder head under high performance.
[0014] Finally, it should be noted that the above content is only used to illustrate the technical solutions of the present application, and is not a limitation on the protection scope of the present application, and simple modifications or equivalent replacements of the technical solutions of the present application by ordinary skilled in the art do not deviate from the essence and scope of the technical solutions of the present application.
Claims
1. A cylinder head structure for improving resistance to knocking pressure and extending service life, comprising a cylinder head iron insert assembly (1), an aluminum housing assembly (2), and an injector orifice (6), characterized in that: The aluminum housing assembly (2) has an installation hole inside. The cylinder head iron insert assembly (1) is inlaid inside the aluminum housing assembly (2) through the installation hole. An injector hole (6) is opened at the center of the cylinder head iron insert assembly (1). An exhaust valve seat (4) and an intake valve seat (5) are opened at the top of the cylinder head iron insert assembly (1). A bolt post is installed at the top of the cylinder head iron insert assembly (1), and an iron cylinder head bolt hole (3) is opened inside the bolt.
2. The cylinder head structure for improving resistance to knocking pressure and service life according to claim 1, characterized in that: The cylinder head iron insert assembly (1) and the aluminum shell assembly (2) are integrally cast and connected.
3. The cylinder head structure for improving resistance to knocking pressure and extending service life according to claim 1, characterized in that: The inner walls of the exhaust valve seat (4), intake valve seat (5) and injector hole (6) are all reinforced with iron rings.