RU211578U1 - CAR MUFFLER - Google Patents

Abstract

The muffler is intended for use in the exhaust system of internal combustion engines. The muffler body is divided by a partition into inlet and outlet chambers, in which perforated inlet and outlet perforated pipes are installed. The outer ends of the perforated parts of the inlet and outlet pipes are equipped with end pipes of a solid profile, rigidly fixed in the holes of the front and rear end walls. The inner ends of the perforated parts of the inlet and outlet pipes are connected by a pipe in the form of a truncated cone of a solid profile. A branch pipe in the form of a truncated cone of a solid profile is rigidly fixed in the opening of the partition. The design provides a simplification of the technology and a reduction in the complexity of assembly.

Description

The utility model relates to the automotive industry, the device is intended for use in the exhaust system of internal combustion engines.

A car muffler converts the energy of sound vibrations of exhaust gases into thermal energy, which reduces the noise level to a certain (specified) value. (see http://systemsauto.ru/output/muffler.html).

A silencer is known for the exhaust of an internal combustion engine (utility model patent No. 158350, published 12/27/2015). Silencer housing contains front and rear end walls. A partition is installed inside, dividing the internal volume into inlet and outlet chambers. The inlet and outlet pipes are fixed in the openings of the front and rear end walls. The inlet pipe consists of a perforated part and a solid profile end pipe connected to it. The outlet pipe consists of a perforated part and a solid profile end pipe connected to it. The inner ends of the perforated parts of the inlet and outlet pipes are connected by an intermediate solid profile pipe. The intermediate branch pipe is rigidly fixed in the opening of the partition and contains a branch pipe rigidly fixed inside it in the form of a truncated cone. Sound-absorbing material is placed in the produced chamber.

The utility model achieves a significant technical result, but there are still opportunities to create a more advanced design.

The objective of the claimed utility model is to simplify the design of the muffler, reduce the metal consumption and reduce the complexity of assembly.

What is new is that the inner ends of the perforated parts of the inlet and outlet pipes are connected to the pipe in the form of a truncated cone of a solid profile. A branch pipe in the form of a truncated cone is rigidly fixed in the opening of the partition.

The drawings show the inventive muffler. In FIG. 1 - general view of the muffler in section; in fig. 2 - node connection of perforated pipes with a partition wall on an enlarged scale.

The muffler housing 1 contains end walls - front 2 and rear 3. A partition 4 is installed inside, dividing the internal volume into inlet chamber 5 and outlet 6. Inlet pipe 7 and outlet 8 are fixed in the holes of the front and rear end walls. The inlet pipe consists of a perforated part 9 and a solid profile end pipe connected to it 10. The outlet pipe consists of a perforated part 11 and a solid profile end pipe connected to it 12. The inner ends of the perforated parts of the inlet and outlet pipes are connected to a pipe of a truncated cone of a solid profile 13. solid profile is rigidly fixed in the opening of the partition 4. Sound-absorbing material 14 is placed in the exhaust chamber.

When assembling the muffler, the following operations are performed in sequence.

A branch pipe in the form of a truncated cone of a solid profile 13 is inserted into the partition 4 and is hermetically welded along the contour by means of welding. A perforated tube 11 with an end tube 12 is put on the branch pipe 13 and a branch pipe 13 is welded. An assembled partition with a branch pipe and a perforated pipe with an end branch pipe is inserted into the body 1, then soundproofing material is inserted and closed with an end wall 3. On the reverse side, a perforated tube 9 with an end branch pipe 12 is put on the couple 13 until it stops against the partition 4 and is closed by the end wall 2. After that, the end walls 2 and 3 are hermetically welded to the body 1. This completes the assembly of the muffler.

The rejection of the intermediate pipe in the design made it possible to reduce the cost of the muffler due to the simplification of the design and technology of the product, as well as due to the reduction in the complexity of assembly.

Claims (1)

An automobile muffler comprising a housing divided by a partition into inlet and outlet chambers, in which inlet and outlet perforated pipes are installed, characterized in that the outer ends of the perforated parts of the inlet and outlet pipes are provided with end pipes of a solid profile, rigidly fixed in the holes of the front and rear end walls ; the inner ends of the perforated parts of the inlet and outlet pipes are connected by a pipe in the form of a truncated cone of a solid profile, rigidly fixed in the opening of the partition, while the outlet pipe is connected to the pipe in the form of a truncated cone by welding, and the inlet pipe is freely put on the pipe in the form of a truncated cone with the opposite side until it stops against the partition.

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