CN201273208Y - Heat-insulating structure of engine exhaustion system - Google Patents

Abstract

The utility model discloses a heat insulation structure of an engine exhaust system, which includes an exhaust pipe, and is characterized in that: between the exhaust pipe and non-heat-resistant components, a heat shield in the shape of a semicircle is arranged to surround For the exhaust pipe, the arc radius of the heat shield is greater than the radius of the exhaust pipe and is fixed on the exhaust pipe by a bracket. Due to the adoption of the above structure, the structure has the following advantages: 1. It can well block the heat emitted by the exhaust pipe and avoid damage to other devices; 2. Due to the use of rivets, it can avoid the problem of desoldering; 3. Save space on the chassis ; 4. Does not affect the NVH performance of the vehicle.

Description

Heat insulation structure of an engine exhaust system

technical field

The utility model relates to an engine exhaust system, in particular to an engine exhaust system heat insulation structure.

Background technique

When the engine of the car is running, the temperature of the exhaust pipe of the engine exhaust system is very high, which is easy to cause damage to the parts around the exhaust system. If there are non-heat-resistant parts around the exhaust pipe, it will cause damage to the surrounding parts after a long time. The current method is to arrange the exhaust pipe away from the non-heat-resistant parts, but the chassis space will not be satisfied. Requirements, failure to meet heat resistance distance and other issues. However, the ordinary heat shield structure is prone to problems such as desoldering and abnormal vibration during the long-term driving of the car, resulting in a decrease in the NVH performance of the vehicle.

During the running of the engine, it is a problem to be solved in the prior art to insulate the exhaust pipe of the engine exhaust system and save the space of the chassis of the automobile.

Utility model content

The technical problem to be solved by the utility model is to provide an engine exhaust system heat insulation structure, so as to achieve the purpose of heat insulation of the exhaust pipe of the engine exhaust system and other components, and save chassis space.

In order to solve the above-mentioned technical problems, the technical solution of the present utility model is a heat insulation structure of an engine exhaust system, including an exhaust pipe, which is characterized in that: between the exhaust pipe and the non-heat-resistant parts, there is A heat shield in the shape of a semicircle surrounds the exhaust pipe, and the arc radius of the heat shield is larger than the radius of the exhaust pipe and is fixed on the exhaust pipe by a bracket to achieve the effect of heat insulation for the exhaust pipe.

A heat insulation structure for an engine exhaust system, the heat shield is provided with a plurality of transverse strip-shaped reinforcing ribs to enhance the rigidity of the heat shield.

A heat insulation structure for an engine exhaust system, the length of the heat shield is consistent with the length of the exhaust pipe to achieve sufficient heat insulation effect.

A heat insulation structure of an engine exhaust system, the heat shield is fixed to a plurality of brackets through a plurality of rivets, and the brackets are welded on the exhaust pipe, thereby solving the problem of desoldering.

An engine exhaust system heat insulation structure, the heat shield is ST12×0.8 aluminized steel plate.

A heat insulation structure for an engine exhaust system. Due to the adoption of the above structure, the structure has the following advantages: 1. It can well block the heat emitted by the exhaust pipe and avoid damage to other devices; 2. Because it is connected by rivets, it can avoid 3. Save space on the chassis; 4. Does not affect the NVH performance of the vehicle.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail;

Fig. 1 is a structural schematic diagram of an engine exhaust system heat insulation structure of the present invention;

Fig. 2 is a schematic diagram of the front structure of an engine exhaust system heat insulation structure of the present invention;

Fig. 3 is a schematic cross-sectional structure diagram of an engine exhaust system heat insulation structure of the present invention;

In Fig. 1-3, 1, heat shield; 2, reinforcing rib; 3, bracket; 4, rivet; 5, exhaust pipe.

Detailed ways

As shown in Figure 1-3, an engine exhaust system heat insulation structure, including an exhaust pipe 5, is characterized in that: between the exhaust pipe 5 and the non-heat-resistant parts, there is a semi-circular arc shape The heat shield 1 surrounds the exhaust pipe 5, the arc radius of the heat shield 1 is greater than the radius of the exhaust pipe 5 and is fixed on the exhaust pipe 5 by the bracket 3, so as to achieve the effect of heat insulation for the exhaust pipe.

The heat shield 1 is installed between the exhaust pipe 5 and the non-heat-resistant parts, and the cross section is in the shape of a semicircle, which can play a good heat insulation effect on the exhaust pipe and the non-heat-resistant parts.

The rivet 4 is used to connect the heat shield 1 and the bracket 3, and the bracket 3 is welded to the exhaust pipe 5, which effectively solves the problem of desoldering.

The heat shield 1 is provided with strong ribs 2 in the transverse direction, which enhances the rigidity of the heat shield 1, so that the heat shield 1 will not produce abnormal noise due to the vibration generated when the engine is running and the car is running, and improves the NVH of the whole vehicle performance.

The material of the heat shield 1 is ST12×0.8 aluminized steel plate, which has good heat insulation effect and relatively high strength.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as various improvements of the method concept and technical solutions of the utility model are adopted, or directly without improvement Those applied to other occasions are all within the protection scope of the present utility model.

Claims (5)

1. An engine exhaust system heat insulation structure, comprising an exhaust pipe (5), characterized in that: between the exhaust pipe (5) and non-heat-resistant parts, a semicircular arc-shaped insulation The heat shield (1) surrounds the exhaust pipe (5), and the arc radius of the heat shield (1) is greater than the radius of the exhaust pipe (5) and is fixed on the exhaust pipe (5) by a bracket (3). 2. The heat insulation structure of an engine exhaust system according to claim 1, characterized in that: the heat shield (1) is provided with a plurality of transverse strip-shaped reinforcing ribs (2). 3. The engine exhaust system heat insulation structure according to claim 1, characterized in that: the length of the heat shield (1) is consistent with the length of the exhaust pipe (5). 4. The heat insulation structure of an engine exhaust system according to claim 1, characterized in that: the heat shield (1) is fixed to a plurality of brackets (3) by a plurality of rivets (4), and the brackets (3) welded on the exhaust pipe (5). 5. The engine exhaust system heat insulation structure according to claim 1, characterized in that: the heat shield (1) is ST12×0.8 aluminized steel plate.

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