Classification Of Automobile Exhaust Holes

The principle is the same as the original factory, but the sound will be better than the original factory. Most of the original cars use this kind of tube. The main reason is that the volume change of the grating muffler in the tube or the volume change of the tube generates a pressure that will return to the cylinder. When the engine is ignited, the piston begins to move radially, and the exhaust valve The piston will open before reaching bottom dead center. At this time, the back pressure in the car exhaust pipe will block the exhaust gas from rushing out, allowing the mixture to achieve complete combustion.

However, if the back pressure is too strong, the exhaust gas cannot be completely discharged from the cylinder, causing the exhaust gas and the mixture to burn together to reduce the combustion efficiency...Of course, the most direct impact is the horsepower output. Advantages: low noise, good low-speed torque. Disadvantages: exhaust gas cannot be used at high speeds Quick discharge, affecting engine power output volume: low (one star)