BR-202024018264-U2 - IMPROVEMENT IN THE MANIFOLD GASKET WITH REINFORCED SEALING BY DRAWING AND CREASING FOR IMPROVED EFFICIENCY IN EXHAUST SYSTEMS

Abstract

The present invention relates to a manifold gasket for automotive exhaust systems, designed to improve the sealing and efficiency of the system. The gasket is manufactured from 0.9 mm thick zinc-plated carbon steel, a material that offers superior resistance to corrosion and deformation under extreme operating conditions. The gasket is characterized by a 4 mm cylindrical draw around the central hole, which projects into the manifold, providing a more efficient seal. Additionally, a groove is formed on the opposite face during the stamping process, which is compressed by the cylinder head during assembly, increasing the seal and reducing gas leaks. This configuration significantly improves the durability and performance of the exhaust system, being applicable to a wide variety of vehicles and operating conditions.

Inventors

• AGOSTINHO MOLINARI

Assignees

• AGOSTINHO MOLINARI

Dates

Publication Date

20260317

Application Date

20240904

Claims (3)

1. 1. EXHAUST SYSTEM MANIFOLD GASKET, characterized by having a cylindrical indentation of 4mm in length around the central hole, which projects into the manifold, improving sealing against gas leaks and increasing the efficiency of the exhaust system, as illustrated in Figure 2. The gasket also has a groove on the face opposite the indentation, which is compressed during assembly by the engine head, providing additional compression and improved sealing, as shown in Figure 1.
2. 2. MANIFOLD GASKET FOR EXHAUST SYSTEMS, according to claim 1, characterized by the fact that the cylindrical draw is dimensioned to fit precisely into the inner diameter of the manifold, ensuring a hermetic seal and reducing gas loss during engine operation, as detailed in Figure 3.
3. 3. EXHAUST MANIFOLD GASKET, according to claim 1, characterized by the groove on the face opposite the draw being formed by a stamping process, which allows the creation of a controlled deformation in the gasket material, facilitating compression by the cylinder head and ensuring a uniform distribution of sealing pressure around the central hole, as shown in Figure 4.

Description

Field of invention [001] This Utility Model refers to a manifold gasket for exhaust systems of motor vehicles, specifically for trucks, but it can be applied to any sealing gasket that requires improved gas sealing efficiency. This gasket is designed to solve common sealing problems in exhaust systems, increasing efficiency and durability through an innovative design that includes a cylindrical draw (Figure 2) and a groove (Figure 1). Furthermore, the gasket is manufactured from 0.9mm thick zinc-plated carbon steel, which improves its resistance to deformation and corrosion, increasing its durability. Fundamentals of the invention [002] In the state of the art, manifold gaskets, especially in heavy vehicles such as trucks, generally have flat faces that, over time, undergo deformation due to high temperatures and pressures, resulting in gas sealing problems in the exhaust system. This problem is widely recognized and can lead to loss of engine efficiency, increased fuel consumption, and higher pollutant emissions. [003] The present invention was developed to solve the sealing problems that occur in traditional manifold gaskets. The innovation introduces a 4mm recess around the central hole of the gasket, forming a cylinder that fits perfectly into the manifold, providing a more effective seal. In addition, the design incorporates a groove on the opposite face of the gasket, which is compressed during assembly by the engine head, further improving the seal and ensuring a uniform distribution of contact pressure. The use of 0.9mm thick zinc-plated carbon steel also provides greater mechanical and corrosion resistance, resulting in a more robust and durable seal, preventing premature failures and reducing the need for maintenance. Brief description of the drawings [004] The attached drawings refer to the manifold gasket with reinforced sealing by drawing and creasing to improve efficiency in exhaust systems, in which: Figure 1 shows a perspective view from the top view for a general representation of the improvement in the manifold gasket focusing on the creasing. Figure 2 shows a perspective view from the bottom view for a general representation of the improvement in the manifold gasket focusing on the drawing. Figure 3 illustrates the technical details of the gasket with the improvement created. Figure 4 shows a detailed view of the improvement created to enhance the gasket by solving the known sealing problems. Description of the invention [005] The present invention relates to an innovative manifold gasket that has a 4mm cylindrical indentation around the central hole, extending into the manifold, creating a more efficient seal (Figure 2). This feature allows the gasket to adapt better to the manifold, providing a more secure fit and reducing the possibility of gas leaks. In addition, the cylindrical indentation also contributes to the uniform distribution of pressure along the gasket, increasing the durability of the seal. The use of 0.9mm thick zinc-plated carbon steel for the manufacture of the gasket significantly improves wear and corrosion resistance, extending the service life of the gasket. [006] On the opposite face of the gasket, a groove has been incorporated around the central hole (Figure 1). This groove is designed to be compressed during assembly when the gasket is pressed against the engine head. The groove provides additional compression to the gasket material, improving the seal and ensuring that gases do not escape through the contact surfaces. This innovative design significantly reduces the sealing problems found in traditional gaskets, increasing engine efficiency and decreasing the risk of exhaust system failures. [007] The invention described is intended for use in automotive applications, particularly in trucks, but its application can be extended to any situation where sealing gases at high temperature and pressure is critical. The manifold gasket with drawn and grooved design, manufactured from 0.9 mm thick zinc-plated carbon steel, offers enhanced resistance to extreme operating conditions such as high temperatures and pressures. Examples of embodiments of the invention [008] As an example of implementation, the manifold gasket is manufactured from galvanized carbon steel with a thickness of 0.9 mm for high-temperature applications. This material was chosen due to its superior resistance to corrosion and deformation under extreme operating conditions, such as high temperatures and pressures. The construction variation may include different sizes of indentation or groove, depending on the type of manifold and the exhaust system in which the gasket will be installed. [009] To demonstrate the advantages of the modified manifold gasket compared to traditional gaskets, practical tests and observations were carried out under controlled operating conditions, where the manifold did not exhibit deformations such as twisting or warping. The tests were conducted in the field, using a stand