Automobile exhaust bellows, also known as automobile exhaust pipe hoses, are installed in the exhaust pipe between the engine exhaust branch pipe and the muffler, so that the entire exhaust system is flexibly connected, thereby reducing vibration, noise and convenience. Install and extend the life of the exhaust muffler system. It is mainly used for light cars, mini cars and passenger cars. Its structure is a double-layer corrugated pipe covered with a steel wire sleeve, and a structure of a snap ring on the straight side of the two ends. To improve the sound insulation effect, the bellows can be equipped with telescopic Festival or net set. Material: The main material is stainless steel SUS304. The material of the ferrule and the tube can be stainless steel or aluminized steel.
⑴General original tube
⑵Back pressure pipe (as environmentally friendly as the original factory) The principle is the same as the original, but the sound will be better than the original. Most original vehicles use this kind of pipe, which is mainly based on the grid muffler or the volume change of the pipe to generate a pressure that will return to the cylinder. When the engine is ignited, the piston begins to move the force stroke, and the exhaust valve will The piston will open before reaching the bottom dead center. At this time, the back pressure in the tube will block the exhaust gas from rushing out, allowing the mixture to reach complete combustion. However, if the back pressure is too strong, the exhaust gas cannot be completely discharged from the cylinder, which causes the exhaust gas to burn with the mixture and reduce the combustion efficiency … Of course, the most direct is to affect the horsepower output. Emissions, affecting engine power output volume: low
⑶ Half back pressure pipe The power of this kind of pipe is lower than that of the back pressure pipe. To put it simply, it has a moderate back pressure between the back pressure pipe and the straight pipe to get the starting torque exhaust pressure ratio. The return pressure tube is good, of course, the torque at medium and high speed is also greater than the return pressure tube. Advantages: good torque performance at the starting and tail speeds. Disadvantages: too much noise. Volume: larger.
⑷Straight pipe Acceleration will be better than the return pressure pipe, but the biggest disadvantage is that it is very noisy. It will make the “Police Cup” chase you. The return pressure is very low, the exhaust has no resistance, the low-speed torque is worse, and the middle-high speed torque is relatively Big advantages: smooth exhaust, strong torque at high speeds. Disadvantages: soft power at low speeds, and high noise (some people say that it is easy to burn the valve. I do n’t know if it is true). Volume: oversized
⑸Semi straight pipe In fact, the semi-straight pipe is the same as the half-return pipe, but the exhaust diameter is larger than that of the half-return pipe.
(6) Semi-double valve variable exhaust A variable exhaust system is connected to the exhaust pipe, and a side pipe is added. When one pipe is completely opened, the other pipe is completely closed. Compared with the variable exhaust of a single valve, it has a better sound effect. When the opening degree is one-third, the sound effect is more single-valve. Qi is basically the same. The exhaust can be switched on and off, and the sound can be changed.
(7) Variable exhaust pipe The exhaust is controlled by a valve to achieve the best sound and performance.
As far as the function of the automobile body is concerned, the exhaust pipe of a car plays a role in reducing vibration and noise and extending the life of the exhaust muffler system. The main material of the exhaust pipe is stainless steel. For ordinary cars, because the exhaust gas of the car is under great pressure when leaving the engine, the noise produced by it may make people feel crazy. At this time, the main muffler function is the exhaust pipe of the car, and a muffler is installed in the interior. Device, greatly reducing the noise of the car. The main working principle is to divert the airflow through multiple channels. These shunts can only be seen by friction and collision with each other to gradually reduce the flow rate of the airflow. This repeated cycle will eventually allow the exhaust gas to flow out through the exhaust pipe of the car, reducing noise! So as to achieve the effect of reducing noise in everyday cars.