What is the function of an exhaust manifold?
2 Answers
The function of an exhaust manifold: The exhaust manifold is connected to each cylinder, and eventually, the exhaust manifolds converge into a single pipe. The exhaust manifold allows the exhaust gases from the cylinders to enter the exhaust pipe. All cars have exhaust manifolds. If an engine has four cylinders, there are four exhaust manifolds; if an engine has eight cylinders, there are eight exhaust manifolds. The exhaust manifold is also known as the exhaust header. The engine's exhaust pipe consists of three sections: the header, the mid-pipe, and the tailpipe. The mid-pipe is located under the chassis and is a relatively long pipe. The tailpipe is the section near the rear bumper and usually has a large muffler. The exhaust pipe allows the exhaust gases produced by the engine's operation to be released into the atmosphere and helps reduce the noise generated during the exhaust process.
I've always thought of the exhaust manifold as the car's respiratory tract. It's directly connected to the engine cylinder head, responsible for collecting exhaust gases from four or six cylinders. The high-temperature exhaust gases rush out from each cylinder port—without it to organize them, things would definitely be chaotic. I've seen old cars with leaking exhaust pipes that not only make harsh popping sounds but also make the car feel particularly sluggish. If the exhaust isn't smooth, the engine has to work harder to push out the exhaust gases, which is like making the engine run with a burden. A better exhaust manifold can even utilize the pulse fluctuations of the exhaust gases to help each other, making the exhaust flow more smoothly, so the car feels more powerful when running.
