• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle exhaust system, and more particularly, to a variable angle exhaust system of an automobile muffler capable of satisfying both of the opposite conditions of engine noise reduction and back pressure reduction by providing a variable angle valve in a muffler. The variable angle exhaust device of the automobile muffler according to the present invention includes an exhaust pipe serving as an exhaust flow path of the automobile engine; A steel bar installed in the exhaust pipe at a right angle to the exhaust flow direction; A spring fixedly installed at the center of the steel bar; The steel bar is installed to be rotatable freely around the steel bar, characterized in that it comprises a plate which is separated up and down like a hinge to operate in conjunction with the spring.
    公开号:KR20020032687A
    申请号:KR1020000063124
    申请日:2000-10-26
    公开日:2002-05-04
    发明作者:박기철
    申请人:이계안；현대자동차주식회사；
    IPC主号:
    专利说明:

    Variable angle exhaust system of automobile muffler {VARIABLE ANGLE EXHAUST SYSTEM FOR NOISE AND BACKPRESSURE CONTROL}
    [7] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle exhaust system, and more particularly, to a variable angle exhaust system of an automobile muffler capable of satisfying both of the opposite conditions of engine noise reduction and back pressure reduction by providing a variable angle valve in a muffler.
    [8] The exhaust system of an automobile not only guides high-temperature, high-pressure gas, which is a product of combustion, to an appropriate place, but also functions as a device for attenuating the combustion noise generated at that time.
    [9] The function of the exhaust system can be classified into two types, namely noise reduction and back pressure reduction. Up to now, the exhaust system has been designed faithfully to the aforementioned two functions by optimizing the shape of a muffler or a pipe.
    [10] However, in recent years, attempts have been made to satisfy both the noise reduction and the back pressure reduction. In order to satisfy these needs, a valve is installed inside the muffler to close the valve in the low speed region and open the valve in the high speed region. It is.
    [11] As in the dual mode muffler, the variable exhaust system and the muffler structure are designed to have two different muffler structures by opening and closing the valve in order to compensate for the disadvantage that the effective performance in various engine RPM areas is not easy to show. It is.
    [12] As shown in FIG. 1 as a conventional embodiment, the muffler 10 has an elliptical casing 12 formed of a steel plate constituting a body, an inlet pipe 14, an outlet pipe 16, 18, and a partition wall 28. It is composed of The inlet pipe 14 is installed through the partition wall 28 and one side wall of the casing 12 to introduce the exhaust gas connected to the exhaust manifold collecting the combustion gas of the engine into the casing 12. The discharge pipes 16 and 18 are installed through the partition wall 28 and the other side wall of the casing to discharge the exhaust gas in the casing 12 to the outside, and the valve means 22 is mounted as shown in the drawing. A high speed discharge pipe 18 and a low speed discharge pipe 16 to which the valve means 22 are not mounted are mounted.
    [13] In the above, the valve means 22 is assumed to be adjusted only under the two conditions of low RPM and high RPM. That is, the valve is closed when RPM is below a certain value, and the valve is opened when RPM is above a certain value.
    [14] Therefore, since the valve means cannot be operated between the low RPM and the high RPM, there is a problem in that it cannot cope with the rotational and exhaust flow rates of the engine.
    [15] The present invention is to solve the above problems, to provide a vehicle exhaust device that the valve installed in the muffler can automatically adjust the opening amount in proportion to the change in the rotation speed of the engine.
    [16] An exhaust pipe serving as an exhaust flow path of an automobile engine in order to achieve the above object; A steel bar installed in the exhaust pipe at a right angle to the exhaust flow direction; A spring fixedly installed at the center of the steel bar; The steel bar is installed to be freely rotatable about the steel bar, and is provided up and down like a hinge to provide a variable angle exhaust device of the automobile muffler, characterized in that it comprises a plate which is operated in conjunction with the spring.
    [1] 1 is an exhaust device of a vehicle muffler according to a conventional embodiment.
    [2] 2 is a cross-sectional view of a variable angle exhaust device of an automobile muffler according to the present invention.
    [3] Figure 3a, Figure 3b is a cross-sectional view showing a process of structural conversion of the variable angle exhaust device of the automobile muffler according to the present invention in accordance with the engine speed.
    [4] <Explanation of symbols for the main parts of the drawings>
    [5] 110: exhaust pipe 120: steel bar
    [6] 130: spring 140: plate
    [17] The exhaust device of the present invention is installed in the discharge pipe as shown in FIG.
    [18] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
    [19] Figure 2 is a cross-sectional view of a variable angle exhaust device of a vehicle muffler according to the present invention, Figure 3a, Figure 3b is a cross-sectional view showing a process of the structure conversion of the variable angle exhaust device of a vehicle muffler according to the engine speed according to the invention. .
    [20] 2 to 3, the steel bar 130 is fixed to the inside of the discharge pipe 120, the steel bar 130, such as a hinge to rotate the steel bar freely within a certain angle within the rotation center The plate 140 is installed up and down. Plate 140 is formed with a plurality of holes 150 to allow a predetermined amount of exhaust gas to pass through.
    [21] The shape of the plate 140 is semicircular, similar to the cross section of the discharge pipe 110, so that the flow amount of the exhaust gas can be sufficiently controlled.
    [22] The spring 130 is installed at the center of the steel bar 120, and the springs 130 are connected to one side of the plate 140, respectively, so that the rotation of the plate 140 is interlocked with the spring 130. .
    [23] Since the rigidity of the spring 130 is set in consideration of the pressure of the exhaust flow, it must operate sensitively according to the change of the exhaust flow amount.
    [24] Referring to the operation of the exhaust device of the present invention configured as described above are as follows.
    [25] As shown in FIG. 3A, when the exhaust flow comes from the front of the exhaust system, both plates 140 above and below are subjected to the resistance of the flow and move backward by a predetermined magnitude by the resistance.
    [26] That is, since the angle of the upper and lower plates 140 is sensitively changed as the intensity of the exhaust flow is changed, the optimum performance can be obtained through the structural change of the exhaust device.
    [27] When the exhaust flow is weakened, as shown in FIG. 3B, the spring is returned to its original state by the elastic restoring force of the spring 130. That is, the angle of the plate changes sensitively with the change of the exhaust flow amount.
    [28] As shown in Fig. 3b, when the exhaust flow is weak and the angle of the upper and lower plates is only slightly changed, the valve of the variable muffler is closed or similar to that of a small sized pipe, while the exhaust flow is so strong that the angle of the upper and lower plates is different. In the case of a lot of changes, it is possible to obtain the same effect as the valve of the variable muffler is open or a large pipe is installed.
    [29] The exhaust device of the present invention as described above is very sensitive to the angle of the plate in accordance with the intensity of the exhaust flow to obtain the optimum exhaust performance of noise reduction and back pressure reduction.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] An exhaust pipe serving as an exhaust flow path of the automobile engine; A steel bar installed in the exhaust pipe at a right angle to the exhaust flow direction; A spring fixedly installed at the center of the steel bar; The steel bar is installed on the steel bar so as to be freely rotatable, and is separated up and down like a hinge, the exhaust device of the vehicle, characterized in that it comprises a plate which is operated in conjunction with the spring.
    类似技术:
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-10-26|Application filed by 이계안, 현대자동차주식회사
    2000-10-26|Priority to KR1020000063124A
    2002-05-04|Publication of KR20020032687A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020000063124A|KR20020032687A|2000-10-26|2000-10-26|Variable angle exhaust system for noise and backpressure control|
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