Structure of exhaust pipe

Abstract

A structure of an exhaust pipe may include a first pipe discharging exhaust gas produced in engine cylinders disposed in a first side row, a second pipe discharging exhaust gas produced in engine cylinders disposed in a second side row, a merging pipe having a first end communicatively connected to the first pipe, and a second end communicatively connected to the second pipe, and a valve plate embedded in the merging pipe, and selectively closed or opened.

Description

[0001] Cross references to related applications [0002] This application claims priority from Korean Patent Application No. 10-2016-0045719 filed on April 14, 2016, the entire content of which is incorporated herein for all purposes of this citation. Technical field [0003] The present invention relates to an exhaust pipe structure for a vehicle that discharges exhaust gas generated in an engine behind the vehicle body, and more specifically to an exhaust pipe structure that can maintain noise reduction characteristics Or according to the driving situation or the driver's preference to produce a harsh exhaust sound that highlights vitality. Background technique [0004] Engines can be classified into inline 4-cylinder engines, in-line 6-cylinder engines, V-shaped 6-cylinder engines, and V-shaped 8-cylinder engines according to the number of cylinders and the installation state of the cylinders, and can also be based on whether the engine is along the width or longitudinal directio...

AI Technical Summary

Problems solved by technology

[0008] Preferably, the analysis of the frequency of the sound produced by the engine is carried out by analyzing the order pitch defined by one event per revolution of the crankshaft, the fundamental frequency of the exhaust sound of the exhaust gas varying according to the speed of the engine and the order (if Using the typical frequency analysis method for a rotating body whose vibration frequency changes according to the engine speed, there is a problem that the vibration frequency often changes according to the engine speed)

[0011] However, the above-mentioned structure cannot attract customers who prefer the above-mentioned rough exhaust sound, so it is necessary to develop an exhaust pipe structure that can emphasize the half-step (that is, produce a rough exhaust sound according to the driving situation)

[0012] The above-mentioned structure in the related art is very susceptible to vibrations because heavy-duty silencers 6a and 6b having long left and right installation lengths are installed to the structure, and thus are separately and additionally installed for improving the reinforcement of the vibration mode Bracket 5

That is, if Figure 1B and 1C As shown, the mufflers 6a and 6b may have unnecessary characteristics in the up-down direction and the left-right direction, and when the engine is excited and the mufflers 6a and 6b resonate, the up-down direction and the left-right direction of the mufflers 6a and 6b The vibration is excessively increased, so there is a concern that the vibration of the vehicle body increases and a booming sound occurs

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