Automobile exhaust pipe classification

- Dec 13, 2017 -

⑴ general original tube

⑵ back pressure tube (as the original and more environmentally friendly)

The same principle with the original, but the sound will be better than the original factory. Most of the original car are using this tube is mainly by the tube wall silencer or tube volume change to produce a return to the cylinder pressure, when the engine is ignited, the piston began to travel radial force stroke, while the exhaust valve will be at The piston will open before it reaches bottom dead center. At this point, the tube back pressure will block the exhaust out, so that the mixture can achieve complete combustion. But the back pressure is too strong, will cause the exhaust gas can not be completely discharged from the cylinder, resulting in combustion of exhaust gas and the mixture to reduce combustion efficiency ... of course, the most direct is the impact of horsepower output advantages l: low noise, low torque torsion good shortcomings: Rapid discharge, affecting the engine power output Volume: low (one star)

⑶ half back pressure tube

The power of this tube back pressure is lower, and the exhaust gas flow rate is better than that of the back pressure pipe. Simply put, it has a moderate back pressure between the back pressure pipe and the straight pipe to obtain the starting torque Back pressure tube is good, of course, high speed torque torsion than the back pressure tube Advantages: From the end of the speed torque performance good Disadvantages: the noise is too large (two stars) Volume: larger

⑷ through the tube

Acceleration will be better than the pressure tube, but the biggest drawback is a very noisy, noisy will make the "police cup" to chase you back to low pressure, exhaust no resistance, low speed torque is poor, high speed torque than Big advantages: smooth exhaust, high torque torsional strength Disadvantages: low speed soft power, noise (some say easy to burn the valve do not know is not true) volume: large ... (four stars)

⑸ semi-straight tube

In fact, semi-straight pipe with the same half-pressure pipe is the same as the exhaust pipe diameter than the half back to the big advantages: the starting torque is lower than half back pressure, but high torque at high torque

⑸ semi-double valve variable exhaust

In the exhaust pipe connected to the variable exhaust system, an increase of a side tube. When a pipe is fully open, the other pipe completely closed, compared with a single valve variable exhaust, there is a better sound effect, the opening of one-third of the time, the sound effect more single valve row The gas is basically the same. You can switch the sound, you can change the size of the exhaust sound.

(6) The variable exhaust pipe controls the exhaust through the valve to achieve the best sound and performance.

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