How does the exhaust system work?

The exhaust system is designed to remove combustion products from the engine and put them into the environment. At the same time, the amount of noise pollution should be reduced to the permissible limits. Like any other set of devices, this system consists of several basic elements, such as exhaust valve and channel, silencer, resonator, as well as connecting tubes and clamps. The exhaust system has a simple and understandable principle of operation: the exhaust gases through the pipeline enter an additional muffler, and then into the main muffler, while the noise level as well as the concentration of harmful substances decrease as much as possible. The internal structure of the silencer is of interest. The latter consists of a number of dampers and partitions, enclosed in a single case. The chess order of location of all these "obstacles" in the way of combustion products contributes to a significant loss of their speed. As a result, the output produces so-called "soothing" gases, which subsequently dissolve in the atmosphere.

For example, thanks to this device many harmful compounds (nitrogen oxide, hydrocarbons, carbon oxides) are retained and returned back. Let's consider in some detail the system of return of nitric oxide in an inlet collector. The main reason for the formation of this compound is the high temperature in the combustion chamber. Reducing the concentration of this substance can be achieved by reducing the operating temperatures. It is most simple and effective to do this by returning some of the generated exhausts. Such a recirculation of the exhaust gas helps to reduce the combustion temperature of the fuel mixture, however, the composition of the latter and the ratio of substances remain unchanged. In addition, the fluctuation of power performance can be considered insignificant. The exhaust system of many modern models of cars contains in its structure a catalyst that is designed to neutralize and purify exhausts.

The main types of malfunctions of this car system can be called an increase in noise levels and an increase in the concentration of harmful emissions. The exhaust system due to its low position relative to the ground surface can be partially or completely damaged. In addition, trips to uneven areas are likely to lead to a disruption in the density of the connecting parts. All this entails a loss of system integrity and, accordingly, an increase in noise pollution from your car. In turn, a negative change in the composition of the exhausted gas mixture may result from improper adjustment of the control systems or contamination of the exhaust devices.

The exhaust system for long and efficient use presents some operational requirements: the connecting pipes, the resonator and the muffler must not come into direct contact with the rest of the vehicle's structural components. This precaution will ensure not only the long operation of the exhaust gas emitting means , but also secure neighboring systems.