RU89624U1 - INTERNAL COMBUSTION ENGINE RELEASE SILENCER - Google Patents

Abstract

A silencer for the exhaust of an internal combustion engine, consisting of a cylindrical body, an inlet pipe, an exhaust pipe mounted on the end wall of the body and located at an angle to its axis, characterized in that no more than one perforated partition is installed inside the body that divides the body volume into 2 chambers so that the volume of the first chamber is 3/5 of the total volume, and the volume of the second 2/5, the outlet pipe is located at an angle to the axis of the housing, enters the housing 0.86 of the length of the housing, has communication openings with amers located in both the first and second chamber.

Description

The designed device can be used in exhaust silencing systems of four-stroke internal combustion engines.

Known analogue [1]: a silencer of an internal combustion engine comprising a housing divided into noise absorption chambers using at least two perforated dividing elements, an inlet and outlet pipe.

Its disadvantage is the high cost and material consumption, and layout parameters that are not suitable for all vehicle designs.

The prototype [2] is a silencer for the exhaust of a two-stroke internal combustion engine, comprising power and silencing parts made in the form of a cylindrical body, an inlet pipe mounted tangentially on the cylindrical body, an exhaust pipe mounted on the end wall of the body along its axis, characterized in that the outlet pipe is installed on the end wall of the housing adjacent to the inlet pipe.

The disadvantages of this device are poor noise absorption when used with four-stroke engines and insufficient bandwidth.

The objective of the creation is to create a design with absorption characteristics that meet the requirements of Formula Student SAE competition.

The technical result is to achieve an exhaust noise level of not more than 110 dB with minimal engine power loss.

The technical result is achieved by the fact that the silencer of the exhaust of the internal combustion engine, consisting of a cylindrical body, an inlet pipe, an exhaust pipe mounted on the end wall of the body and located at an angle to its axis, contains inside the body no more than one perforated partition separating the body volume by 2 chambers, so that the volume of the first chamber is 3/5 of the total volume, and the volume of the second 2/5, the exhaust pipe is located at an angle to the axis of the body, enters the muffler 0.86 of the length of the body, has about aperture of communication with cameras and is located both in the first and in the second chamber.

An engineered exhaust silencer is shown in FIG. 1.

The claimed technical solution can be implemented in the design of a silencer for the exhaust of an internal combustion engine, including a housing 1, a partition 2, an inlet pipe 3, a first 4 chamber, an exhaust pipe 5, a second 6 chamber.

The device is arranged as follows.

Inside the housing 1, a perforated partition 2 is installed, dividing the volume of the housing 1 into two chambers, the volume of the first 4 chambers being 3/5 of the total volume, and the volume of the second 6 chamber is 2/5 of the total volume. The exhaust pipe 5 is located at an angle to the axis of the housing 1 and enters the housing 1 by 0.86 of the length of the housing 1, also the exhaust pipe 5 has openings for communication with the first 4 and second 6 cameras and is located both in the first 4 and in the second 6 chamber .

The device operates as follows.

The flow of exhaust gases enters through the inlet pipe 3 into the first 4 chamber, from where part of the flow through the holes in the partition 2 enters the second chamber 6, part is reflected from the partition 2 and the housing 1, and part enters through the openings in the exhaust pipe 5. In the second chamber 6 part of the flow enters the exhaust pipe 5 through the holes, and part through the open end of the exhaust pipe 5, part is reflected from the end wall of the muffler 4. In the exhaust pipe 5, part of the stream, passing through the communication openings with the first 4 and second 6 cameras, It is made of a silencer, and the other part creates a counterflow for the main flow passing through the end of the exhaust pipe 5.

The proposed utility model allows to achieve an exhaust noise level of no more than 110 dB with minimal engine power loss.

Information sources

1 - Patent No. 2309268; Authors: Kochetov Oleg Savelievich, Kochetova Maria Olegovna, Kochetov Sergey Savelievich, Kochetov Sergey Sergeevich. Patentee: Oleg Kochetov. Published 2007.10.27

2 - Patent No. 36861; Authors: Prikhodko E.E., Melnikov F.P., Kuzmin A.G., German E.A. Patent holder: Altai State Technical University named after II Polzunov State Educational Institution of Higher Professional Education. Published 2004.03.27

Claims (1)

A silencer for the exhaust of an internal combustion engine, consisting of a cylindrical body, an inlet pipe, an exhaust pipe mounted on the end wall of the body and located at an angle to its axis, characterized in that no more than one perforated partition is installed inside the body that divides the body volume into 2 chambers so that the volume of the first chamber is 3/5 of the total volume, and the volume of the second 2/5, the outlet pipe is located at an angle to the axis of the housing, enters the housing 0.86 of the length of the housing, has communication openings with amers located in both the first and second chamber.