JP3153797U - Rectifier - Google Patents

Abstract

To increase torque output from an internal combustion engine and to improve combustion efficiency. A funnel 11 is provided at an end portion of an intake manifold. The funnel 11 is formed with a spiral groove. The rectifying plate 12 is provided facing the funnel 11 and has a substantially conical shape protruding toward the center of the opening of the funnel 11. The rectifying plate 12 is formed with a spiral groove that is twisted in the same direction as that of the spiral groove of the funnel 11. [Selection] Figure 2

Description

  The present invention relates to a rectifier, and more particularly to a rectifier that rectifies air taken into an internal combustion engine.

  A funnel for rectifying air to be introduced may be attached to an intake manifold for introducing air (air) to an engine that is an internal combustion engine, such as a motorcycle or an automobile. Usually, the funnel is formed in a so-called funnel shape, that is, in a cylindrical shape so that its inlet is bent outward. As a result, the intake resistance is reduced and the intake efficiency can be increased.

  Conventionally, there are some that have several spiral irregularities on the inner wall of the funnel in the air inflow direction (see, for example, Patent Document 1).

Registered Utility Model No. 3105220

  However, the torque output from the internal combustion engine did not increase so much even if the spiral wall surface was provided on the funnel inner wall. Furthermore, in an internal combustion engine, it is required to obtain a larger work rate with less fuel, that is, to improve combustion efficiency.

  The present invention has been made in view of such a situation, and is intended to increase the torque output from the internal combustion engine and improve the combustion efficiency.

  A rectifying device according to one aspect of the present invention is a rectifying device that is provided in an intake manifold of an internal combustion engine and rectifies air sucked into the internal combustion engine, and is a funnel provided at an end of the intake manifold, A funnel in which a spiral groove is formed, and a substantially conical rectifying plate provided facing the funnel and projecting toward the center of the funnel opening, the funnel having a spiral groove And a current plate in which a spiral groove that is twisted in the same direction as the direction of twisting is formed.

  The rectifying plate is formed so as to surround the funnel with a predetermined interval by a substantially conical peripheral portion, and from between the portion of the rectifying plate surrounding the funnel and the periphery of the funnel Air can be introduced.

  The funnel and the rectifying plate can hold an air filter that removes dust from the air taken into the internal combustion engine.

  As described above, according to one aspect of the present invention, it is possible to increase the torque output from the internal combustion engine and improve the combustion efficiency.

It is a figure showing composition of rectifier 1 of an embodiment of the invention. It is a figure which shows the spiral groove | channel provided in the funnel 11 and the baffle plate 12. FIG. 2 is a perspective view of a funnel 11 and a rectifying plate 12. FIG. It is a front view of the funnel 11 and the baffle plate 12. FIG. It is a figure which shows the example of the torque of an internal combustion engine, power (power), and an air fuel ratio when not installing the rectifier 1. FIG. It is a figure which shows the example of the torque of an internal combustion engine at the time of mounting | wearing with the rectifier 1, power (power), and an air fuel ratio.

  FIG. 1 is a diagram showing a configuration of a rectifier 1 according to an embodiment of the present invention. The rectifying device 1 is provided in an intake manifold of an internal combustion engine such as a motorcycle or an automobile, and rectifies air taken into the internal combustion engine. The intake manifold may be provided with a carburetor that mixes fuel and air, or a fuel injection device that injects fuel into the sucked air. That is, the rectifying device 1 may be mounted on the carburetor or the manifold of the fuel injection device.

  The rectifying device 1 includes a funnel 11 and a rectifying plate 12. The funnel 11 is provided at the end of the intake manifold, which is provided at the end of the intake side, and the surface of the opening which is the side of the funnel 11 that guides the intake air, as shown in FIGS. As will be described later with reference to the drawing, a spiral groove is formed.

  The rectifying plate 12 is provided to face the funnel 11. The rectifying plate 12 is formed in a substantially conical shape protruding toward the center of the opening of the funnel 11. Further, on the surface of the rectifying plate 12 and on the surface on the funnel 11 side (substantially conical surface), a spiral groove that is twisted in the same direction as the twist direction of the spiral groove of the funnel 11 is provided. Is formed.

  Further, as shown in FIG. 1, the rectifying plate 12 is provided with a cover portion 13 formed so as to surround the periphery of the funnel 11 at a predetermined interval in a substantially conical peripheral portion. Air is introduced between the cover 13 formed so as to surround the funnel 11 and the periphery of the funnel 11.

  The current plate 12 can also be configured as an air filter cover. In this case, the funnel 11 and the rectifying plate 12 hold an air filter (not shown) that removes dust from the air taken into the internal combustion engine.

  The funnel 11 and the rectifying plate 12 are formed of a metal such as an aluminum alloy or a magnesium alloy or a resin such as engineering plastic. Naturally, the funnel 11 and the rectifying plate 12 may be formed by molding predetermined portions from metal and forming the other portions from resin.

  FIG. 2 is a diagram showing spiral grooves provided in the funnel 11 and the current plate 12. FIG. 3 is a perspective view of the funnel 11 and the current plate 12. FIG. 4 is a front view of the funnel 11 and the current plate 12.

  As shown in FIGS. 2 to 4, a spiral groove is formed in the funnel 11 (the surface of the opening). For example, the cross section of the spiral groove formed in the funnel 11 is arcuate. The width and depth of the spiral groove formed in the funnel 11 can be determined according to the inner diameter of the opening of the funnel 11. The magnitude of the twist of the spiral groove formed in the funnel 11 can be determined according to the length of the intake manifold to which the funnel 11 is mounted.

  For example, when the inner diameter of the opening of the funnel 11 is 63 mm in diameter, the width of each of the spiral grooves of the funnel 11 is preferably 3 mm to 10 mm, more preferably 5 mm. The depth of each spiral groove of the funnel 11 can be half or less than the width of the spiral groove. That is, when the width of each of the spiral grooves of the funnel 11 is 3 mm to 10 mm, the depth of each of the spiral grooves of the funnel 11 can be any of 1.5 mm to 5 mm. . When the width of each spiral groove of the funnel 11 is 5 mm, the depth of each spiral groove of the funnel 11 can be 2.5 mm. Further, for example, when the width of each of the spiral grooves of the funnel 11 is 3 mm to 10 mm, the depth of each of the spiral grooves of the funnel 11 can be any of 1 mm to 4 mm. When the width of each of the spiral grooves of the funnel 11 is 5 mm, the depth of each of the spiral grooves of the funnel 11 can be 2 mm.

  Further, the substantially conical rectifying plate 12 protruding toward the center of the opening of the funnel 11 is formed with a spiral groove that is twisted in the same direction as that of the spiral groove of the funnel 11. Yes. In the current plate 12 shown in FIGS. 2 to 4, the spiral groove is twisted 180 degrees. That is, when one end of the spiral groove is formed at a predetermined position on the bottom surface of the substantially conical portion of the rectifying plate 12, the other end of the spiral groove is the substantially conical portion of the rectifying plate 12. Is formed at a position rotated 180 degrees with respect to the position of the bottom surface on which one end of the spiral groove is formed.

  For example, the cross section of the spiral groove formed in the rectifying plate 12 is arcuate. For example, when the spiral groove formed in the funnel 11 is provided in the clockwise direction with respect to the flow direction of the air sucked into the internal combustion engine, the spiral groove formed in the rectifying plate 12 is also the internal combustion engine. It is provided in a clockwise direction with respect to the direction in which the air sucked into the air flows. In addition, the spiral groove formed in the funnel 11 is provided counterclockwise with respect to the direction in which the air sucked into the internal combustion engine flows, and the spiral groove formed in the rectifying plate 12 is provided in the internal combustion engine. You may make it provide counterclockwise with respect to the direction through which the inhaled air flows.

  The width and depth of the spiral groove formed in the rectifying plate 12 are wider and deeper at the bottom surface of the substantially conical portion of the rectifying plate 12 and approach the tip of the substantially conical portion of the rectifying plate 12. As it gets narrower and shallower.

  For example, when the inner diameter of the opening of the funnel 11 is 63 mm in diameter and the width of each spiral groove of the funnel 11 is 3 mm to 10 mm, the width of each spiral groove of the rectifying plate 12 is The bottom surface of the substantially conical portion of the rectifying plate 12 can be any one of 3 mm to 10 mm, which is the same as the width of the spiral groove of the funnel 11. When the inner diameter of the opening of the funnel 11 is 63 mm and the width of each spiral groove of the funnel 11 is 5 mm, the width of each spiral groove of the rectifying plate 12 is the same as that of the rectifying plate 12. On the bottom surface of the substantially conical portion, the width of the spiral groove of the funnel 11 can be set to 5 mm.

  Further, the depth of each spiral groove of the rectifying plate 12 can be the same as the depth of each spiral groove of the funnel 11. For example, when the depth of each of the spiral grooves of the funnel 11 is 1.5 mm to 5 mm, the width of each of the spiral grooves of the rectifying plate 12 is set to be substantially conical. On the bottom surface of the portion, the depth can be any of 1.5 mm to 5 mm, which is the same as the depth of each of the spiral grooves of the funnel 11. For example, when the depth of each of the spiral grooves of the funnel 11 is 2.5 mm, the depth of each of the spiral grooves of the rectifying plate 12 is set to the depth of the substantially conical portion of the rectifying plate 12. On the bottom surface, the depth can be 2.5 mm, which is the same as the depth of each of the spiral grooves of the funnel 11.

  In addition, each depth of the spiral groove of the rectifying plate 12 may be deeper or shallower than each depth of the spiral groove of the funnel 11.

  Further, the width and depth of the spiral grooves formed in the funnel 11 and the rectifying plate 12 do not have to be constant. For example, are 10 mm wide grooves and 5 mm wide grooves arranged alternately? A groove having a width of 10 mm, a groove having a width of 5 mm, and a groove having a width of 3 mm may be sequentially arranged in a cyclic manner.

  Note that the spiral grooves of the funnel 11 and the current plate 12 are formed by cutting, injection molding, pressing, or the like.

  The effect of the rectifier 1 will be described with reference to FIGS. FIG. 5 is a diagram showing examples of torque, power (power), and air-fuel ratio of the internal combustion engine when the rectifier 1 is not attached. FIG. 6 is a diagram illustrating an example of the torque, power (power), and air-fuel ratio of the internal combustion engine when the rectifier 1 is mounted. 5 and 6, the solid line indicates torque, and the alternate long and short dash line indicates power (power). The internal combustion engine used for the measurement of the result shown in FIG. 5 and the measurement of the result shown in FIG. 6 is the same. When the results shown in FIG. 5 were measured, the temperature was 25 degrees Celsius, the atmospheric pressure was 1007 mBar, and the humidity was 75%. When the results shown in FIG. 6 were measured, the temperature was 29 degrees Celsius, atmospheric pressure. Was 1003 mBar and the humidity was 65%.

  As shown in FIG. 5, when the rectifier 1 was not installed, the maximum torque of the internal combustion engine was 87 N · M, and the maximum output was 36.8 kW (50 PS).

  On the other hand, as shown in FIG. 6, when the rectifier 1 was installed, the maximum torque of the internal combustion engine was 99 N · M, and the maximum output was 46.3 kW (63 PS).

  When the case where the rectifying device 1 is not attached and the case where the rectifying device 1 is attached are compared in more detail, there is no difference in characteristics when the rotational speed is 2000 rpm or less. However, when the rectifier 1 is not installed, a torque of 80 N · M is generated at a rotational speed of 2400 rpm, a torque of approximately 87 N · M is generated at a rotational speed of 2800 rpm to 3400 rpm, and at a rotational speed of 4000 rpm and 5000 rpm. , Torques of 77 N · M and 70 N · M are generated, respectively.

  On the other hand, when the rectifier 1 is mounted, a torque of 95 N · M is generated at a rotational speed of 2400 rpm, a torque of approximately 99 N · M is generated at a rotational speed of 2800 rpm to 3600 rpm, and at a rotational speed of 4000 rpm and 5000 rpm. , Torques of 95 N · M and 86 N · M are generated, respectively.

  That is, when the rectifying device 1 is attached as compared with the case where the rectifying device 1 is not attached, the torques are 1.19 times, 1.14 times, and 1.1 times when the rotational speeds are 2400 rpm, 3000 rpm, 4000 rpm, and 5000 rpm, respectively. 23 times and 1.23 times.

  When the rectifier 1 is not installed, the rotational speed is 2400 rpm to 5600 rpm and the air-fuel ratio is around 12.5, whereas when the rectifier 1 is installed, the rotational speed is 2400 rpm to 5600 rpm and the air-fuel ratio. Was around 13.0. By mounting the rectifier 1, it can be said that the air-fuel ratio approaches 14.7 of the theoretical air-fuel ratio, and the combustion efficiency is improved.

  As described above, when the rectifier 1 is mounted, when the torque and the air-fuel ratio are taken into consideration, when the rotational speed is 2400 rpm or more, the torque becomes larger and the combustion efficiency becomes better.

  As described above, a spiral groove is formed in the funnel provided at the end of the intake manifold, and is provided facing the funnel, and the substantially conical rectifying plate protruding toward the center of the funnel opening, When a spiral groove that is twisted in the same direction as that of the funnel spiral groove is formed, the torque output by the internal combustion engine is increased and the combustion efficiency is improved. can do.

  The rectifier 1 can be mounted on a reciprocating engine such as a gasoline engine or a diesel engine, such as a motorcycle or an automobile, or an internal combustion engine that is a rotary.

  The embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

1 rectifier, 11 funnel, 12 rectifier, 13 cover

Claims (3)

In a rectifier provided in an intake manifold of an internal combustion engine for rectifying air taken into the internal combustion engine,
A funnel provided at an end of the intake manifold, wherein the funnel has a spiral groove;
A substantially conical rectifying plate provided facing the funnel and projecting toward the center of the funnel opening, wherein the spiral is twisted in the same direction as the direction of twisting of the spiral groove of the funnel. A rectifying device comprising: a rectifying plate in which a groove is formed. The rectifier according to claim 1,
The rectifying plate is formed so as to surround the funnel with a predetermined interval by a substantially conical peripheral portion,
Air is introduced from between the portion of the rectifying plate surrounding the funnel and the periphery of the funnel. A rectifying device according to claim 1 or 2,
A rectifier that holds an air filter that removes dust from air sucked into the internal combustion engine between the funnel and the rectifying plate.

Images