What is the function of exhaust pipe modification?

First, increase the cylinder capacity:

1. The simplest way to improve engine power is to increase the working volume of the cylinder, that is, to increase the displacement.

2. Increasing the working volume will increase the volume and weight of the engine, which is unacceptable for modern passenger car designers who pursue compact structure and driving economy.

Second, improve the engine power:

1, that is, the effective power per liter of cylinder working volume, is the way to achieve this goal. To improve the engine power, increasing the air intake is a solution.

2. Some engines adopt forced air intake turbocharging to increase air intake by increasing gas density, such as turbocharging.

3. At present, under the control of automobile exhaust emission regulations and the limitation of manufacturing cost, most automobile engines still tend to adopt natural inhalation.

Third, improve the ventilation system environment:

1, the exhaust gas is changed into full-section direct exhaust, which reduces the resistance of exhaust gas removal to the maximum extent and reduces the power loss, thus improving the power output of the engine to a certain extent.

2, improve the gas flow rate to improve the intake and exhaust volume per unit time, and make a fuss about improving ventilation efficiency. Breathing is the most basic function of an automobile engine. Through air exchange, the exhaust gas is discharged, and the working cycle of the engine returns to the initial state of the cycle, absorbing the oxygen needed by fresh gas to provide fuel.