The function of automobile exhaust pipe! Can I not connect the exhaust pipe of the car?

Some friends may find that the exhaust pipe on the car engine has fallen off, but they don't know the function of the exhaust pipe. So what is the function of automobile exhaust pipe? Can you not answer it? The following is what I have compiled about the function of automobile exhaust pipe. Welcome to read the reference.

What is the function of automobile exhaust pipe?

Nitrogen and oxygen can only react chemically at high temperature and high pressure, but it is far from this standard inside the automobile cylinder. Automobile exhaust pipe pumps out the engine exhaust gas under certain working conditions, and sends part of the exhaust gas discharged by the engine back to the intake manifold, and then enters the cylinder again with fresh mixed gas to participate in the combustion work. Because the exhaust gas can't burn, the combustion speed and temperature in the cylinder are reduced, thus improving the emission and reducing the pollutant content.

Of course, it should be noted that excessive exhaust gas recirculation will affect the ignition and performance of the mixture, thus affecting the power of the engine, especially when the engine is idling, low speed, light load and cold. Therefore, when the engine is at idle speed, low speed, low load and cold engine, ECU controls the exhaust gas not to participate in recirculation to avoid the engine performance being affected. When the engine exceeds a certain speed and load and reaches a certain temperature, ECU controls a small amount of exhaust gas to participate in recirculation, and the amount of exhaust gas involved in recirculation changes according to the engine speed, load, temperature and exhaust gas temperature, so as to achieve the lowest NOX in exhaust gas.

Can I not connect the exhaust pipe of the car?