Vehicle exhaust system components perform two functions together: reducing exhaust pollution and noise reduction.
Let’s take a look at what these parts do.
1.Exhaust manifold.
All types of engines have to operate with internal combustion systems. The exhaust delivers from the combustion chamber through the exhaust manifold. Vehicle manufacturers are design exhaust manifolds for each engine model to be most efficient in delivered the exhaust from the engine quickly. And without returning to the engine’s combustion chamber.
The exhaust manifolds are usually making of cast iron that can withstand high heat because the engine exhaust temperature is over a thousand degrees Celsius. It has the functionality to collect the exhaust gases from each cylinder and then carry them into the main pipe.
The exhaust that is output goes into the catalyst, the next component.
2.Catalytic converters and oxygen sensors
Catalysts are responsible for reducing the toxic gas emitted by the engine. It installs close to the exhaust manifold. That is because the car catalyst works best at high temperatures.
The function of the catalyst is to use internal materials made of rhodium, palladium, and titanium to react with the toxic gas atoms to convert their state to carbon dioxide and water. Rhodium is responsible for catalyzing the reaction, palladium performs an oxidation function, and platinum is using in conjunction with the above two elements.
On the catalytic converter, there are oxygen sensors installed in the front and rear positions. This sensor detects the amount of oxygen leftover by combustion. The information is then signal to the ECU that controls the ignition. An abnormal amount of oxygen will affect fuel combustion and its consumption. In the event of a sensor breakdown, the car’s alarm system will show you a warning light on the screen.
The catalyst has a lifespan of more than a hundred thousand kilometers or sixty thousand miles, but eventually, it is broke by the soot clogging. As with oxygen sensors, there is a chance it becomes dirty or damaged. You will finally need to replace these parts.