In all vehicles, exhaust system is an important part because it performs two vital functions: expels hazardous combustion gasses out of the car and reduces noise produced by these when being thrown. This is essential, both for reasons of good operation and for the safety of passengers.
Yes, for your safety, as one of the gasses that the exhaust system helps expel carbon monoxide, highly toxic compound and accumulation in the interior of the cabin can bring undesirable consequences such as headaches, nausea, irritability and even fainting.
So when this system fails, it presents a number of problems ranging from the failure of the car to the endangerment of the health of the driver and passengers. Also, the control device emission will be seriously compromised, and this compromises all mechanical carriages.
Some of the problems that occur more commonly are:
1) The restriction in the exhaust ducts or the muffler. In both cases, loss of engine power and failure occurs in the ignition.
2) The expulsion of dense, choking fumes coming to sneak inside the cabin.
3) The broken pieces of the exhaust system. Common causes are listed as engine vibration or transit tracks in disrepair.
3) The catalyst may be contaminated, or the monolith, the heart of the catalyst, can melt if in contact with unburned fuel. This may occasionally occur when the vehicle wheels in neutral without the engine running.
4) External corrosion from moisture, which decreases the effectiveness of the system.
These and other less common conditions are those that should serve as a reason to keep up in the care of that device, as it involves all parts: the manifold and exhaust pipes, muffler and resonator, the tailpipe and the arms and clamps that hold it.
In that sense, it is important to go to your trusted mechanic when you notice any of these problems.
Exhaust system parts and their functions
The exhaust system is made up of different elements with specific functions that help mitigate noise and emissions and allow gas to evacuate combustion products into the atmosphere.
A set of tubes that make converge the exhaust gas
The shape and length of the exhaust manifold tubes can play a significant role in cleaning the cylinder, and its particular design is related to the vehicle characteristics.
The catalytic converter is one of the expensive parts of the vehicle that are not essential for operation. The use of this part is due to the need of removing a high percentage of toxic gasses that accompany the engine exhaust.
The dynamics of its operation is complex and depends on several factors that must be controlled accurately to achieve the goal. The modern way to feed the engine injection assisted petrol computer, and using precision sensors have made it possible efficient work of the catalytic converter is a reality.
The hot gasses enter in this device from the engine and inside the chemical reactions that convert toxic gasses into non-toxic to the outlet gasses.
This element is intended to deaden the noise produced by mechanical shock waves generated when the exhaust valve opens. The muffler is not essential, but a way of heavy traffic, where all cars produced a loud noise, in most countries this device is compulsory.
There are plenty of designs silencers with acoustic efficiency better or worse, but without exception, they are looking to convert the pulsating shock waves flow of exhaust gasses to a continuous and silent flow.
The resonator is another device with a similar operation to the muffler and reinforces the work of removing noise for a quieter escape. Not all vehicles have the resonator, reserved for the most expensive and silent cars.
There is a variant of the resonator that does the opposite; you are looking to change the pattern noise and do more volume and a modified frequency that gives the psychological impression of a more powerful engine. These resonators never come standard in cars are bought and assembled by lovers to those noises, usually young. The most common are that they put in place the tailpipe.
Used in cars with a system of injection of gasoline and some diesel, and do not always have a secondary sensor.
Tailpipe or output:
During its trajectory throughout the previous maze in the exhaust, the gasses have cooled. This cooling, in some cases, is operating at low power, allows gasses to reach a lower temperature of 100 within the tailpipe, which implies that the abundant water vapor can condense. The water in this state can form solutions with other substances contained in exhaust gasses, to produce very corrosive agents, preferably acids: Nitric, with Nitrogen Oxides, and sulfur, with sulfur dioxide gasoline containing this element.
Besides this functional factor, the tailpipe is a visible exhaust element, and this final part is constructed of bright and corrosion resistant materials.
The lengths of duct connecting the parts are very thin walls to be lightweight and relatively flexible and avoid additional burdens on the integral parts during the expansion and contraction, for the remarkable change in temperature between rest and functioning.
The improvements obtained in engine technology have led in recent years to better combustion processes and with them, to lower gross emissions. The development of electronic control systems, engine creates accurate injection of the required amount of fuel and precise adjustment of the ignition point and optimization, depending on the operating point of the activation of all existing components. These two points are, in addition to an increase in engine power, and also a clear improvement in the quality of the exhaust gasses led.
Exhaust with controlled emission systems has been developed to reduce pollutants generated by the car in the combustion process.
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