RU185912U1 - Heat shield - Google Patents

Abstract

The utility model relates to the field of engine building, namely to heat shields mounted on an internal combustion engine to prevent damage to parts in the engine compartment of a vehicle from thermal radiation from the exhaust system, which does not create additional noise and vibration. Creases are made on the shielding surface of the heat shield. The folds are made both in contact with the edge of the screen, and at a distance from the edge of the screen. The folds are made both one-sided and with folds directed towards each other. 4 s.p. f-ly, 3 ill.

Description

The inventive utility model relates to the field of engine manufacturing, namely, heat shields mounted on an internal combustion engine to prevent damage to parts in the engine compartment of a vehicle from thermal radiation from an exhaust system that does not create additional noise and vibration.

The known design of the heat shield according to the patent of the Russian Federation No. 174570, made of several metal sheets separated by gaps, the metal sheets being made of steel with a double-sided aluminum coating, the edge of the metal sheets of the screen has rolling, at least on a part of the edge. The sealed edge gives extra rigidity to the heat shield. However, the rolled edge may not provide the required stiffness in the center of the screen, which may lead to additional noise and vibration from the screen.

The closest analogue of the claimed heat shield is a heat insulating screen for an internal combustion engine according to the patent of the Russian Federation No. 2310085. The heat-insulating screen for the internal combustion engine, comprising a shielding surface covering the exhaust manifold. The screen has at least two holes for bolting to the exhaust manifold, located on the same axis. A gutter-like protrusion is made along the axis passing through the bolt holes. The shielding surface on both sides has a thermal spraying and contains at least two stiffening ribs made across the trough-like protrusion.

Thermal spraying protects the screen from the corrosive effects of the environment. However, it is not always possible to place stiffeners and trough-like protrusions on the screen due to the proximity of other engine parts.

The task to which the claimed utility model is directed is to reduce noise in the engine compartment of the vehicle.

The technical result is the absence of additional noise and vibration from the heat shield, increasing the service life.

The claimed technical result is achieved by the fact that folds are made on the shielding surface of the heat shield. Folds give the screen the required stiffness. The folds are made in contact with the edge of the screen, and at a distance from the edge of the screen. This gives the necessary rigidity to different parts of the heat shield, both near the edge and in the central part. The folds can be made with bends directed towards each other, or with a one-sided bend. This shape of the folds allows you to apply them on different surfaces of curvature of the screen. On a flat shielding surface or a shielding surface with a large radius of curvature, folds are made with folds running towards each other. On a shielding surface with a small radius of curvature and near the edge of the screen folds are made with one-sided bending.

The inventive heat shield is illustrated by the following figures.

In FIG. 1 shows a heat shield, front view; in FIG. 2 shows a heat shield, side view; in FIG. 3 shows a sectional view along section AA; in FIG. 4 shows a section along the section BB.

The heat shield 1 comprises a shielding surface 2. Folds are made on the shielding surface. Folds 3 are made one-sided. The folds 4 are made with folds directed towards each other. Part of the folds on the shielding surface are located in contact with the end edge of the screen. Other folds are located on the shielding surface at a distance from the edge of the screen, not touching the edge of the heat shield. Folds can be made both with bends directed towards each other, and with a one-sided bend. On a flat shielding surface or a shielding surface with a large radius of curvature, folds are made with bends directed towards each other. These folds can be made both at a distance from the edge, and in contact with the ends of the edge. On a screening surface with a small radius of curvature near the edge of the screen, folds with one-sided bending are performed. To make folds, in the required places before molding the screen on a flat workpiece at the locations of the folds, collars are extruded, which, when forming the screen, are converted into folds.

These folds can be made in screens of both single-layer and multilayer structures.

The work of the heat shield is as follows. The heat shield is attached to the exhaust manifold of the internal combustion engine. In this case, the folds give the screen the necessary rigidity for damping vibrations and vibrations, which leads to the absence of additional noise and an increase in service life.

The inventive utility model can be performed by existing technical means on existing equipment.

The proposed heat shield has a simple and reliable design that provides effective damping of vibrations and damping noise.

Claims (5)

1. A heat shield comprising a shielding surface, characterized in that folds are made on the shielding surface. 2. Heat shield according to claim 1, characterized in that the folds are made in contact with the ends with the edge of the screen. 3. Heat shield according to claim 1, characterized in that the folds are made at a distance from the edge of the screen. 4. Heat shield according to claim 1, characterized in that the folds are made one-sided. 5. Heat shield according to claim 1, characterized in that the folds are made with folds directed towards each other.

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