What is a downpipe?

What a flame tube is

As well as the exhaust manifold, catalytic converter, middle and rear silencer and the tailpipe, the Y-pipe is also part of the exhaust system of every common vehicle that is equipped with a gasoline engine.

• The trouser pipe owes its funny name to its double-flow construction, which is reminiscent of trousers. Because just like the garment of the same name, there are two entrances that lead to one exit.
• The pipe is an integral part of an exhaust system. It is located between the manifold and the catalytic converter or center muffler, where it is attached to the exhaust manifold.
• With a V-engine so two pipes are brought together to one. And this then creates the shape of the pants. The merging of the two pipes is located directly in front of the attenuation.

Y-pipe - functionality and structure of the exhaust system

An exhaust system filters the exhaust gases to reduce noise emissions and then discharges them. In addition, it fulfills the purpose of promoting and optimizing the gas exchange that takes place in the cylinder.

• The complete exhaust system of a conventional car consists of an exhaust manifold, the Y-pipe, on which a Lambda probe is located, a catalytic converter on which there is another lambda probe, a pre-silencer and a Final pot. A soot filter can also be included with diesel.
• In all cars, the transition from the Y-pipe to the catalytic converter takes place with the help of a flexible connection in the form of a metal hose or a spherical seal. Because these flexible connection components decouple the vibrations of the engine.
• In older cars, there is no flexible but a rigid screw connection between the Y-pipe and the catalytic converter. In order to still be able to absorb vibrations, the tube is resiliently mounted.