JPS636544Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wastegade valve device that is installed between the exhaust manifold and supercharger of a turbo engine and short-circuits and discharges a portion of the boost pressure to the exhaust pipe during high-speed operation.

Turbo engines use exhaust gas pressure to supercharge, but in order to improve performance in the medium to low speed range, supercharging is limited in the high speed range. There is a wastegade valve device as a device used to restrict this supercharging. It is equipped with a valve mechanism and an actuator that opens and closes the valve mechanism.

Incidentally, the wastegate valve device may be attached or detached in a narrow engine room, but as shown in Fig. 1, the phases of the upper and lower flanges 1 and 2 are usually the same, so it is not possible to attach or detach the wastegate valve device to the main body A in which the valve mechanism is built. When the actuator B is stacked and fixed with bolts 3 and nuts 4, the bolt 5 that fixes the main body A is located directly below the bolt 3 that fixes the actuator B to the main body A, making it extremely difficult to attach and detach. do.

This project provides a waste gate valve device that solves this problem. In the waste gate valve device installed between the exhaust manifold and the supercharger, square flanges provided at the top and bottom of the main body are aligned horizontally with respect to the axis center. It has a phase difference of 45 degrees and is a square flange with bolt holes at each corner.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 shows only the main body of the proposed device in a plan view.

The present device differs from the conventional device shown in FIG. 1 in the structure of the upper and lower flanges 1 and 2. That is, the upper and lower flanges 1 and 2 have a phase difference of 45° in the horizontal direction with respect to the center axis. For this purpose, holes 6 at the four corners of the upper flange 1 through which the bolts 3 for attaching the actuator shown in FIG. 1 are inserted, and bolts 5 for fixing the main body A (both shown in FIG. 1) The four holes 7 of the lower flange 2 to be inserted are located at positions shifted by 45 degrees from each other, so that a tool for attaching and removing bolts can be inserted from above.

Note that since there is no need to change the position of the bypass port 8 provided in the main body A, no inconvenience will occur during installation. Further, there is no need to change the structure of the actuator B (see FIG. 1) attached to the upper flange 1.

As is clear from the above description, the device of the present invention has excellent advantages such as being able to be attached to and removed from the main body with the actuator still attached to the main body, and manufacturing is the same as the conventional method and there is no need to worry about any particular trouble.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing a conventional device, and FIG. 2 is a plan view showing a main body as a main part of an embodiment of the present device. 1...Top flange, 2...Bottom flange, 3,5
...Bolt, 4...Nut, 6,7...Hole, 8...
...Bypass port.

Claims (1)

[Scope of utility model registration request] In a wastegate valve device installed between an exhaust manifold and a supercharger, rectangular flanges provided at the top and bottom of the main body have a phase difference of 45° in the horizontal direction about the axis center, and each corner A wastegate valve device with a square flange with bolt holes.