JPH0968048A - Mounting device for supercharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To steeply reduce the number of mounted parts while enabling spaces to be utilized effectively by integrally providing a mounting part provided on the outer surface of a main body which guides the outside air and fixing a supercharger on the main body, and a fixing part for fixing the main body to an engine. SOLUTION: A bracket 1 serving as a mounting device applied to a slant engine whose cylinder is inclined by a specific angle is provided with a hollow cylindrical main body 4 for guiding the introduced outside air into a supercharger 3. A mounting part 5 for fixing the super charger 3 to the main body 4 in such a state that the main body 4 and the supercharger 3 are communicated with each other and a fixing part 6 for fixing the main body 4 to which the supercharger 3 is fixed to the engine are integrally provided on the outer surface of this main body 4. The main body 4 is constituted by providing an introducing part 41 having an outside air introducing port 41a on its one end, an intake air chamber 42 arranged side by side on the outer end side of the introducing part 41 and a connection part 43 having an emission port 43a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates mainly to a supercharger mounting device for supercharging intake air to an automobile engine.

[0002]

2. Description of the Related Art Conventionally, a supercharger which is attached to an automobile engine and supercharges intake air is located downstream of a throttle body having a built-in throttle valve, such as that disclosed in Japanese Utility Model Laid-Open No. 62-167828. A type that can be attached is known. That is, the supercharger is arranged at an intermediate position between the throttle body and the engine, and the intake air that has passed through the throttle body is compressed by the supercharger and then introduced into the intake manifold through the pipe line. In such a structure, a supercharger is generally attached to a bracket or a stay fixed to a cylinder head of an engine while being supported at two or more places.

[0003]

By the way, in a so-called cab-over type vehicle in which the engine is mounted under the floor of the vehicle, a slant engine mounted in the vehicle in a state where the cylinder is inclined is the mainstream. In such a slant engine, since the floor of the vehicle is close to the engine, the space for mounting various auxiliary devices around the engine is very limited. Therefore, even when the supercharger is attached, it is necessary to attach it without changing the positional relationship between the cylinder head and the floor, which causes many restrictions. If there is such a restriction, when arranging the supercharger on the downstream side of the throttle body as described above, install a plurality of brackets and stays as in the case of an engine with a normal arrangement, and install them in the supercharger. It becomes difficult to apply a mounting structure such as supporting. In other words, it is necessary to prepare a dedicated supporting component in order to mount it within the constraints due to the mounting space. Moreover,
Such supporting parts may be standard two point supports or three
In the point support structure, when it is attempted to cope with the shape of the mounting space or the like, one support point may not be able to be supported by one component, resulting in a large number of support points.
This has increased the manufacturing cost.

An object of the present invention is to eliminate such a problem.

[0005]

In order to achieve the above object, the present invention takes the following measures. That is, the supercharger mounting device according to the present invention is a hollow cylinder-shaped main body that guides the introduced outside air to the supercharger, and the supercharger is provided on the outer surface of the main body and the main body and the supercharger are in communication with each other. It is characterized by integrally including a mounting portion for fixing to the main body and a fixing portion for fixing the main body to which the supercharger is fixed to the engine.

With such a structure, the supercharger is attached to the engine by attaching the supercharger to the main body via the attaching portion and then attaching the main body to the engine via the fixing portion. That is, since the mounting device of the present application integrally includes the mounting portion of the supercharger and the fixing portion of the device to the engine with the main body that is a passageway for communicating the outside air, the number of parts increases when mounting. Never. In addition, the supercharger is in communication with the hollow cylindrical main body while being fixed to the main body, and outside air is introduced into the supercharger through the main body, that is, the outside air to be sucked in passes through the main body to the supercharger. Since it arrives, it is not necessary to provide a pipe for introducing air to the supercharger in the vicinity of the supercharger.

Therefore, by mounting the main body on the engine, the supercharger can be easily mounted on the engine, and at the same time, the air flow passage to the air intake port of the supercharger can be integrally formed. For this reason, it is not necessary to specially connect the air flow passage to the air intake port of the supercharger.
The space can be effectively used for mounting, and the work man-hours can be significantly reduced. Further, since the main body, the mounting portion and the fixed portion are integrated, the number of mounting parts can be significantly reduced. Moreover, since the main body has a hollow cylindrical shape, it can function as an intake chamber by appropriately setting the internal volume.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS.

The bracket 1, which is a mounting device, is applied to the slant engine 2 in which the cylinder is tilted by a certain angle. As shown in FIG. 1, the bracket 1 has a hollow cylindrical shape and guides the introduced outside air to the supercharger 3. The main body 4, and the main body 4 and the supercharger 3 provided on the outer surface of the main body 4.
An attachment part 5 for fixing the supercharger 3 to the main body 4 and a fixing part 6 for fixing the main body 4 to which the supercharger 3 is fixed to the slant engine 2 are integrally provided.

The main body 4 is provided with a cylindrical introduction part 41 having an introduction port 41a for introducing the outside air at one end, and an intake chamber connected to the other end of the introduction part 41 in a communicating state. A functioning chamber section 42 and the chamber section 42
And a connecting portion 43 having a lead-out port 43a connected to the suction port of the supercharger 3. Introductory part 4
Reference numeral 1 denotes a perfect circular shape as shown by the two-dot chain line in FIG. 4, and forms a part of the intake air flow passage from the throttle body (not shown) to the supercharger 3. The length may be determined based on the positional relationship with the throttle body and the size of the supercharger 3. The introduction port 41a provided in the introduction portion 41 and having a flange 41b for connection with a throttle body is opened in a substantially horizontal direction when the bracket 1 is fixed to the slant engine 2 in order to connect the throttle body. It is provided.

On the other hand, the introduction portion 4 on the side opposite to the introduction port 41a
As shown in FIG. 6, the chamber portion 42 continuously provided to the end portion 1 has a polygonal cross-sectional structure having a cross-sectional area larger than that of the introduction portion 41. This cross-sectional shape substantially corresponds to the space shape between the supercharger 3 and the slant engine 2 that is inevitably formed when the supercharger 3 is mounted on the slant engine 2 with a normal mounting angle. Therefore, the maximum cross-sectional area is secured without pressing the mounting space. Further, by making almost all of the cross-sectional shape a space for intake air, it is possible to secure a large capacity space that sufficiently functions as an intake chamber.

The connecting portion 43, which communicates with the chamber portion 42, is formed by the chamber portion 4 as shown by the one-dot chain line in FIG.
The cross-sectional shape is similar to the cross-sectional shape of the chamber portion 42 having a cross-sectional area smaller than 2. And the inlet 41a
A lead-out port 43a having a mounting flange 43b that is connected to the supercharger 3 is provided in the same side direction as that so as to open obliquely upward when the slant engine 2 is mounted. The outlet 43a has a lower surface of the mounting flange 43b set at substantially the same height as the upper surface of the introduction portion 41 so that the overall height when the supercharger 3 is mounted is not increased. This connecting portion 43
An attaching stay 51 serving as the attaching portion 5 is provided at a predetermined angle at the end portion not connected to the chamber portion 42. The mounting stay 52, which makes a pair with the mounting stay 51, is provided at a predetermined angle at a position near the end of the chamber portion 42 on the connecting side. The supercharger 3 is fixed to the bracket 1 by the pair of mounting stays 51 and 52 and the mounting flange 43b of the outlet 43a.

In order to fix the bracket 1 to the slant engine 2, the horizontal fixing stays 61 and 62, which are fixing parts 6, and the vertical fixing stays 61 and 62 are provided near the boundary between the introducing part 41 and the chamber part 42 and at the end part of the connecting part 43. The fixing stay 63 is integrally formed. The horizontal fixing stays 61 and 62 are provided in a pair at the end portion of the chamber portion 42 on the introduction portion side so as to project toward the introduction portion 41 side. The horizontal fixing stays 61 and 62 are fastened to the fixing boss 2a provided on the side surface of the cylinder head of the slant engine 2 with bolts.
On the other hand, the vertical fixing stay 63 is provided so as to project in the direction opposite to the lead-out port 43a, and the horizontal fixing stay 6 is provided.
1, 62 has bolt holes 63a bored in a direction substantially orthogonal to the bolt holes 61a, 62a provided, and is fastened by bolts to a support portion 2b provided on the side surface of the cylinder head of the slant engine 2. To do.

The supercharger 3 mounted and fixed to the bracket 1 may have the same internal structure as the conventional one, but the external shape, particularly the structure of the stay 31 for mounting, is as follows. What corresponds to the structure of the bracket 1 is required. That is, the supercharger 3 must have a pair of stays 31 projecting at least on the lower surface portion thereof and having a substantially equal outer surface distance between the facing inner surfaces of the mounting stays 51 and 52. That is, the suction port flange 32 is connected to the outlet port 43.
It is necessary to have a structure in which the stay on the supercharger 3 side is projected so as to be located inside the mounting stays 51 and 52 in a state of being in close contact with the mounting flange 43b of a.

In such a structure, the supercharger 3 is first attached to the bracket 1. The suction flange 32 of the supercharger 3 is brought into close contact with the mounting flange 43b of the outlet 43a for alignment. In this state, the stay 31 of the supercharger 3 is in contact with the inner surfaces of the mounting stays 51, 52, so the bolts are tightened from the outside of the mounting stays 51, 52 to fix the respective stays 31, 51, 52. Conclude each other. Next, the mounting flange 43b and the suction port flange 32 of the supercharger 3 are similarly fastened with bolts. As a result, the supercharger 3 is fixed to the bracket 1 by the position of the outlet 43a and the positions of the mounting stays 51 and 52. In this state, the suction port of the supercharger 3 and the outlet port 43a of the bracket 1 are connected, and the supercharger 3 and the inside of the main body 4 are communicated with each other.

Next, the bracket 1 to which the supercharger 3 is attached and fixed is fixed to the slant engine 2. First, the horizontal fixing stays 61 and 62 are aligned with the boss 2a of the cylinder head, and the vertical fixing stays 6 are
Align 3 with the support 2b. Then, the bolt holes 61a, 62a, 6 of the stays 61, 62, 63, respectively.
The stays 61, 62, 63 are fastened with bolts in a state where the screw holes 3a and 3a are aligned. After that, the introduction port 41a is connected to the throttle body, and the discharge port 3a of the supercharger 3 is connected to the intake manifold 7. Then, the attachment of the supercharger 3 is completed.

In the bracket 1 thus mounted, the outside air introduced from the introduction port 41a, that is, the intake air is introduced from the introduction section 41 to the chamber section 42 and temporarily stored in the chamber section 42. In other words, since the chamber portion 42 has a larger internal volume than the introduction portion 41, the inflowing intake air stays, and the intake pulsation is adjusted during that period. After that, the intake air moves from the chamber portion 42 to the connecting portion 43 and is supplied into the supercharger 3 from the outlet 43a. Therefore, the supercharger 3 can be directly connected to the throttle body and the intake manifold.

As described above, the introduction portion 41, the chamber portion 42, and the connecting portion 43 of the main body 4 form a circulation system passage for the intake air, so that the intake air delivered from the throttle body can be reliably delivered to the supercharger 3. It is a guide. Moreover, since the chamber portion 42 is formed between the introduction portion 41 and the connecting portion 43, the intake air is not simply guided to the supercharger 3 but the intake pulsation or the like is suppressed. Moreover, since this distribution path is formed in the main body 4, it is not necessary to secure a dedicated space for the distribution path, and the mounting space for mounting the supercharger 3 becomes large. Can be suppressed as much as possible. Further, simply by fixing the supercharger 3 to the bracket 1, the distribution system passage and the supercharger 3 can be brought into communication with each other without any special connection work, which facilitates the attachment work.

Therefore, in the slant engine 2, the supercharger 3 can be easily mounted on the standard vehicle without changing the underfloor structure of the standard vehicle on which the supercharger 3 is not mounted. Further, since the intake air flow passage and the parts for attaching the supercharger 3 are integrated, the working time required for the attachment and the formation of the flow passage can be shortened, and at the same time The number of parts can be significantly reduced, and the cost can be reduced.

The present invention is not limited to the embodiment described above.

In addition, the configuration of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing an attached state of the embodiment by enlarging a main part.

FIG. 3 is a front view of the embodiment.

FIG. 4 is a side view of the embodiment.

FIG. 5 is a plan view of the same embodiment.

6 is an end view taken along the line AA in FIG.

[Explanation of symbols]

 1 ... Mounting device 2 ... Slant engine 3 ... Supercharger 4 ... Main body 5 ... Mounting part 6 ... Fixing part

Claims (1)

[Claims] 1. A main body for guiding outside air introduced into a supercharger in the form of a hollow cylinder, and a mounting portion provided on the outer surface of the main body for fixing the supercharger to the main body in a state where the main body and the supercharger communicate with each other. An installation device for a supercharger, which is integrally provided with a fixing part for fixing a main body to which a supercharger is fixed to an engine.