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Exhaust system

  • The exhaust system of a car is, as the name suggests, the vehicle’s exhaust system. The exhaust system, contrary to popular belief, is a very important system in a car. Its functions include:
  • Reducing the toxicity of exhaust gases (positively affects the environment)
  • Noise reduction (reduces noise level)
  • Removal of hot, toxic gases from the rear of the car (prevents toxic gases from entering the passenger compartment)

In addition, the exhaust system creates the required exhaust gas resistance, which affects the vehicle’s performance. Also, exhaust systems, especially sports exhaust systems, play an important role in the appearance of the car as well as in the sound, creating a pleasant tone.

In the common people, the exhaust system is almost always called simply “muffler”. But this is not entirely true, since the muffler is just one of the components of the exhaust system.

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The exhaust gas removal system consists of:

  • Yoke ring (connects several exhaust outlets into one);
  • Front pipe (connects the manifold with a catalyst or corrugation);
  • Corrugations (reduces vibration transmitted from the engine)
  • CAT (converts toxic gases into harmless ones);
  • Resonator (reduces the noise level);
  • Middle pipe (connects the resonator to the muffler);
  • Muffler (performs the same function as a resonator, but is constructed somewhat differently and uses a special fiber as a sound-absorbing material).

Let’s consider the operation of the exhaust system in more detail. After the combustion of the fuel mixture, many unburned toxic gases remain, under high pressure they enter the manifold, which connects all the exhaust outlets into one. The collector increases the resistance for the exhaust gases, so very often, in tuning and sports, the standard collector is replaced by so-called “spider”. In fact, this is the same manifold, but smoother bends to reduce resistance to gas flow. After the collector, the gases enter the front pipe, the temperature of which can reach 1000°C. From the intake pipe, the gases pass through the corrugation into the catalyst, the main task of which is to provide unburned harmful compounds and convert toxic gases into harmless ones. In most cars, it also reduces noise levels and gives the exhaust a pleasant sound. After the gases have taken place in the resonator, which reduces the noise level, which often has a strange, bizarre, cunning, recoverable shape, since it must repeat the geometry of the underbody and leave room for other car units) gases enter the muffler, which reduces the noise level, like the resonator, but has a slightly different device.

Reasons for the failure of exhaust systems

Any car enthusiast can tell that the exhaust system of a car is faulty and requires repair, since a faulty exhaust system is accompanied by:

  • Loud “roar”;
  • Decreased engine power (poor drafting and speedup);
  • Unstable engine operation (idling speed)
  • Ingress of exhaust gases into the car interior;
  • The appearance of carbon black on parts

Therefore, the repair of the exhaust system cannot be postponed, especially since the repair of a “neglected” exhaust system will cost much more. The most common failure of the exhaust system is corrosion and mechanical damage. Rust “eats” the housings of mufflers, CAT and resonators, as well as intermediate pipes and welding seams of fastening parts. As a rule, this happens due to constant, strong temperature changes, ingress of water, salt and accumulating condensate inside the muffler and resonator on the exhaust system, as well as due to the limitation of active chemical compounds in the system.

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engine repair

Restoration and replacement of power unit components is the most technically complex and responsible process of everything that relates to car maintenance. It is almost impossible to do it yourself without special equipment. Therefore, in such a situation, people usually turn to a specialized center.

Partial as well as scheduled or major repairs are possible. The planned one is carried out after the exhaust of the resource of the power unit as a result of the run. Unscheduled due to other reasons - the wear of certain parts faster due to their more limited resource than the power plant as a whole. Maintenance is also necessary, aimed at maintaining the units in order to extend the service life or due to unexpected breakdowns associated with various causes of these phenomena (accidents, low-quality spare parts).

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21 April 2020

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21 April 2020

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