JPH08100666A - Mechanical supercharger installation structure for engine - Google Patents

Abstract

PURPOSE: To contrive installation of a supercharger without interferrence with an oil filter by installing the mechanical supercharger on an engine main body through a supercharger installing bracket, providing the oil filter on the supercharger installing bracket, and forming an oil supply passage to the supercharger. CONSTITUTION: A supercharger installation bracket 5 is installed on an installation portion 4 formed on one end of a cylinder block 2 of an engine E. The supercharger installation bracket 5 has a fastening main body 11 fixed to the installation portion 4, and a supercharger installing part 12 horizontally projected from the center portion of the main body 11, and supported at its lower side to a longitudinal wall 11a of the fastening main body 11 by means of a triangular support wall 30. An installing part of an oil filter F is provided on a lower portion of the supercharger installing part 12. A mechanical supercharger 15 is arranged on an upper surface side of the supercharger installing part 12. Oil is supplied to an oil introduction port of the supercharger 15 through an oil supply passage formed on the installation bracket 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a mechanical supercharger of an engine.

[0002]

2. Description of the Related Art Generally, when a mechanical supercharger such as a supercharger is attached to an engine body, a predetermined mounting bracket is used.

The mounting bracket has an oil supply port corresponding to an engine-side oil supply port and an oil return port for supplying and circulating oil from the engine-side oil pan to the attached mechanical supercharger, Oil supply passage and oil drain,
An oil drain passage is provided (for example, Japanese Patent Laid-Open No. 3-15
1521). In the conventional configuration, the oil filter is usually provided on the engine body side.

[0004]

However, in the case of adopting the structure in which the oil filter is provided on the engine body side as described above, the oil filter is usually provided on the side portion of the engine body. There is a problem that its existence is an obstacle for installing the mechanical supercharger. The problem becomes particularly noticeable in the case of an in-line type multi-cylinder engine in which the mechanical supercharger itself must be attached to the side portion of the engine body.

[0005]

The present invention has been made for the purpose of solving the above problems, and is constituted by the following effective problem solving means.

That is, as described above, the mounting structure of the engine mechanical supercharger of the present invention is such that the mechanical supercharger is attached to the engine body through the supercharger mounting bracket having the oil supply port and the oil discharge port. In the mechanical supercharger mounting structure of an engine to be mounted, an oil filter is attached to the supercharger mounting bracket, and an oil supply passage from the oil filter to the mechanical supercharger is formed.

Further, the mounting structure for the mechanical supercharger of the engine of the present invention is formed so that the oil supply passage is branched so as to be able to supply oil to the engine side together with the mechanical supercharger.

Further, in the mounting structure of the engine mechanical supercharger of the present invention, the oil drain passage from the mechanical supercharger is formed by a rigid pipe connecting the upper end and the lower end of the bracket.

Further, in the mounting structure of the engine mechanical supercharger of the present invention, the supercharger mounting bracket has a vertical wall portion fastened to the engine and a horizontal portion for mounting the mechanical supercharger. The rigid pipe is obliquely extended to the vertical wall portion of the supercharger mounting bracket body and connected to the horizontal portion.

Further, the mounting structure of the engine mechanical supercharger of the present invention has the above-mentioned constructions, and further, the dimension between the inlet and the outlet of the engine body side oil supply passage and the inlet of the oil filter side oil supply passage. The dimension between the outlets is made equal.

[0011]

The present invention has the following effective actions in correspondence with the above respective configurations.

That is, in the structure of the mounting structure of the mechanical supercharger of the engine of the present invention, as described above, the mechanical supercharger mounting bracket having the oil supply port and the oil discharge port is used to attach the mechanical supercharger to the engine body. A mechanical supercharger mounting structure for an engine to which a feeder is mounted, wherein an oil filter is attached to the supercharger mounting bracket, and an oil supply passage from the oil filter to the mechanical supercharger is formed. ing.

Therefore, the oil filter and the mechanical supercharger can be attached to the engine body through the single attachment bracket in a single operation without causing any interference between the oil filter and the mechanical supercharger. Then, the oil from the engine body side oil supply port can be supplied to the mechanical supercharger through the oil supply passage through the oil filter.

Further, in the structure of the mounting structure of the mechanical supercharger of the engine of the present invention, two oil supply passages can be supplied to the engine main body side together with the oil supply to the mechanical supercharger. It is formed by branching to the oil supply passage.

Therefore, the fresh oil can be supplied to the engine body side through the oil filter as described above, and the oil for the engine body side is the same as when the oil filter is provided on the engine body side. The filter function can also be realized.

Further, in the structure of the mounting structure for the mechanical supercharger of the engine of the present invention, the oil drain passage from the mechanical supercharger is formed by a rigid pipe connecting the upper end and the lower end of the bracket. There is.

Therefore, since the rigid pipe can realize the reinforcing action of the mechanical turbocharger mounting bracket and the oil supply passage is formed inside the rigid pipe, a special oil passage forming space is required. In addition, the cost for molding is low.

Further, in the structure of the mounting structure of the mechanical supercharger of the engine of the present invention, as described above, the supercharger mounting bracket includes the vertical wall portion fastened to the engine and the mechanical supercharger. And a horizontal portion for mounting the rigid pipe, and the rigid pipe is connected to the horizontal portion by extending obliquely on the vertical wall portion of the main body of the mounting bracket for the turbocharger.

Therefore, the reinforcing effect of the mechanical turbocharger mounting bracket is greatly improved.

Further, in the structure of the mounting structure of the engine mechanical supercharger of the present invention, as described above, in each of the above-mentioned structures, the dimension between the inlet part and the outlet part of the engine body side oil supply passage is further increased. And the dimension between the inlet and the outlet of the oil filter side oil supply passage are formed to be equal.

Therefore, for example, in the case where the mechanical supercharger is not provided depending on the vehicle model, it is possible to directly attach the oil filter to the engine body side without attaching the mechanical supercharger mounting bracket. Will be more likely.

[0022]

As a result of the above, according to the mounting structure of the engine mechanical supercharger of the present invention, the following beneficial effects are obtained.

(1) Even in the case of an in-line engine, the mechanical supercharger can be easily installed without causing a problem of interference with the oil filter.

(2) It is not necessary to form a complicated oil passage,
Molding is easy and cost is low.

(3) It is possible to supply as fresh an oil as possible to the mechanical supercharger.

(4) The oil supply and drain ports at the joint of the engine side mechanical turbocharger mounting bracket can also be used as a mounting part for the oil filter alone, and the versatility according to the vehicle type can be reduced at a low cost. Can be realized.

[0027]

1 to 11 show the construction of an engine mechanical supercharger mounting structure according to an embodiment of the present invention.

First, FIGS. 1 and 2 show a mechanical supercharger.
(Hereinafter, simply referred to as a supercharger) 15 and oil filter F
1 shows an outline of the entire structure of an in-line multi-cylinder engine E of the present embodiment in a state in which is attached.

The main body of the engine E comprises a cylinder head 1,
The cylinder block 2 includes a girinder block 2, an oil pan 3, and the like.
As shown in FIGS. 3 to 5, a mounting portion (fastening portion) 4 of a supercharger mounting bracket 5 described later is formed.

The supercharger mounting bracket mounting portion 4 is shown in FIG.
~ Fastening seat portion 51 on the turbocharger mounting bracket 5 side shown in Fig. 9
.. to 58, and has substantially the same shape and size corresponding to the oil inlet and the oil outlet of the oil filter F as shown in FIG. Oil supply port 6 and oil return port 7
The first oil filter mounting portion 8 having the above is provided. Oil supply port 6 of the first oil filter mounting portion 8
And the oil return port 7 is the above-mentioned turbocharger mounting bracket 5
Inverse darma of the same shape and size corresponding to the oil introduction port at the tip of the oil introduction passage 13 of the second oil filter attachment portion 10 formed on the side and the downstream side oil supply port of the second branched oil supply passage 14b described later. It is formed in a shape. The dimension W between the upper and lower central axes is also the oil introduction passage to the oil introduction port of the oil filter F and the oil introduction port of the second oil filter attachment portion 10 of the second turbo oiler mounting bracket 5 side. It is formed to be equal to the dimension W between the central axes of the oil introduction port 13 and the oil supply port of the second branched oil supply passage 14b. As a result, the oil filter F
Is directly attached to the second oil filter mounting portion 10 of the supercharger mounting bracket 5 and directly to the engine E main body side without interposing the supercharger mounting bracket 5. It can be installed in common with.

On the other hand, the supercharger mounting bracket 5 is attached to the mounting portion 4 which is fastened and fixed to the supercharger mounting bracket mounting portion 4 on the engine E main body side, as shown in detail in FIGS. 7 to 9, for example. The fastening main body 11 having a corresponding vertical wall structure, and a vertical wall portion of the fastening main body 11 that horizontally projects laterally from the central portion of the fastening main body 11 and has a triangular support wall 30 on the lower side thereof. And a supercharger mounting portion 12 supported by 11a.

The second oil filter mounting portion 10 corresponding to the engine E main body side first oil filter mounting portion 8 is provided at a position below the supercharger mounting portion 12 of the fastening main body portion 11. Has been. The second oil filter mounting portion 10 is provided with an oil introduction passage 13 for communicating with the oil supply port 6 of the engine E main body side first oil filter mounting portion 8 to the oil introduction port of the oil filter F. , A main oil supply passage 14 from the oil outlet of the oil filter F is formed, and an upper side mechanical supercharger is formed above the main oil supply passage 14 by penetrating upward through the support wall portion 12a of the supercharger mounting portion 12. A first branched oil supply passage 14a extending to the oil introduction port of the machine 15 and an engine E main body side first branched from the main oil supply passage 14 at the side portion.
The second branch oil supply passage 14b to the oil return port 7 of the oil filter mounting portion 8 is formed.

Further, an oil drain passage 22 from the mechanical supercharger 15 is formed in a side portion of the second oil filter mounting portion 10. The oil drain passage 22 is
It is formed by a rigid pipe 23 extending obliquely along the vertical wall portion 11a of the fastening main body portion 11 and connected to the supercharger mounting portion 12 in the horizontal state, and the vertical wall portion 11a.
Has the effect of reinforcing. Then, the oil drain passage 2
2 is returned to the inside of the oil pan 3 from the communication passage 31 of the lower skirt portion of the cylinder block 2 on the engine E main body side.

An idler 25 of a drive belt 24 of the mechanical supercharger 15 is pivotally supported at a corner portion of the vertical wall portion 11a with the supercharger mounting portion 12.

As described above, the fastening main body portion 11 has a plurality of fastening seat portions 51 to 58 with respect to a plurality of fastening seat surfaces of the turbocharger mounting bracket mounting portion 4 on the engine E main body side.
Are accurately corresponded to each other, and they are fastened and fixed through predetermined bolts as shown in FIGS. Then, in the fastened and fixed state, the second oil filter attachment portion 10 is provided.
The oil introduction port of the oil introduction passage 13 of the above is connected to the oil supply port 6 of the first oil filter attachment portion 8 on the engine E main body side,
Further, the oil supply port of the second branched oil supply passage 14b to the engine side is the oil return port 7 of the first oil filter mounting portion 8 of the engine E main body side, and the drain port downstream of the drain passage 22 is the above-mentioned oil outlet port. The communication passages 31 on the oil pan 3 side are coaxially and accurately corresponded to each other.

A mechanical supercharger 15 such as a supercharger is attached to the upper surface of the supercharger mounting portion 12. In the attached state, the oil inlet of the mechanical supercharger 15 corresponds to the first branch oil supply passage 14a from the second oil filter attachment portion 10. Fresh oil that has passed through the oil filter F is supplied through the branch oil supply passage 14a.

Now, the layout of the above-described oil passages can be expressed in a layout that is easy to understand in a plane, for example, as shown in FIGS.

In the structure of the mounting structure of the engine mechanical supercharger according to the embodiment of the present invention, as described above, the mechanical supercharger 15 is mounted on the engine E main body via the supercharger mounting bracket 5. In the mechanical turbocharger mounting structure, first, an oil filter F is attached to the supercharger mounting bracket 5, and a first branch oil supply passage 14a from the oil filter F to the mechanical supercharger 15 is provided. Has been formed.

Therefore, the oil filter F and the mechanical supercharger 15 can be mounted on the engine E main body through the single mounting bracket 5 in a single operation without causing any interference between the oil filter F and the mechanical supercharger 15. Then, the oil from the engine E main body side oil supply port 6 is introduced into the oil filter F through the oil introduction passage 13, and then the fresh oil through the oil filter F is fed into the first branch oil supply passage 1
It becomes possible to supply to the same mechanical supercharger 15 through 4a.

Further, in the structure of the mounting structure of the same mechanical supercharger, the oil supply passage is supplied to the mechanical supercharger 15 by the first branched oil supply passage 14a and the second branched oil supply passage 14b is used for the engine. It is formed by branching into two oil supply passages so that oil can be supplied also to the E main body side.

Therefore, as described above, fresh oil can be supplied to the engine E main body side at the same time through the oil filter F, and the engine can be supplied to the engine E main body side in the same manner as when the engine E main body side is provided with the oil filter F. It is also possible to realize the oil filter function for the E body side.

Further, in the same configuration, the mechanical supercharger 1 described above is used.
The oil drain passage 22 from the vertical wall portion 11 of the bracket 5
It is formed by a rigid tube 23 connecting the upper end and the lower end of a.

Therefore, the rigid pipe 23 can realize the reinforcing effect of the vertical wall portion 11a of the mechanical supercharger mounting bracket 5, and the oil drain passage 22 is formed inside the rigid pipe 23. , No special oil passage formation space is required, and the cost for molding is low.

Further, in the same configuration, as described above,
Further, the dimension between the oil supply port 6 and the oil return port 7 of the engine E main body side oil supply passage and the dimension between the oil introduction port and the oil discharge port portion of the oil filter F side oil supply passage are made equal.

Therefore, for example, when the mechanical supercharger 15 is not provided depending on the vehicle type, the oil filter F may be directly attached to the engine E main body side without attaching the mechanical supercharger mounting bracket 5. It becomes possible and versatility becomes high.

As a result, according to the mounting structure of the mechanical supercharger, the following beneficial effects can be obtained.

(1) Even in the case of an in-line engine, the mechanical supercharger can be easily installed without causing a problem of interference with the oil filter.

(2) It is not necessary to form a complicated oil passage,
Molding is easy and cost is low.

(3) As fresh oil as possible can be supplied to the mechanical supercharger.

(4) The joint portion of the mechanical supercharger mounting bracket can be used also as a mounting portion for the oil filter alone, so that versatility according to the vehicle type can be realized at low cost.

[Brief description of drawings]

FIG. 1 is a schematic front view of an engine body showing a mechanical supercharger mounting structure for an engine according to an embodiment of the present invention.

FIG. 2 is a schematic side view of the same.

FIG. 3 is a side view showing a detailed structure of the engine body.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view of the same.

FIG. 6 is a cross-sectional view of a main part of the engine body side.

FIG. 7 is a front view showing the structure of the supercharger mounting bracket of the embodiment of the present invention.

FIG. 8 is a plan view of the same.

FIG. 9 is a side view of the same.

FIG. 10 is a schematic view showing a layout of the oil passages according to an embodiment of the present invention in a planar layout.

FIG. 11 is a schematic view of another oil passage similar to FIG.

[Explanation of symbols]

1 is a cylinder head, 2 is a cylinder block, 3 is an oil pan, 4 is a supercharger mounting bracket mounting portion, 5 is a supercharger mounting bracket, 6 is an engine side oil supply port, 7 is an engine side oil return port, and 8 Is an engine side first oil filter mounting portion, 10 is a turbocharger mounting bracket side second oil filter mounting portion, 11 is a fastening main body portion, 12 is a supercharger mounting portion, and 13 is oil introduction to the oil filter. aisle,
Reference numeral 14a is a first branch oil supply passage, 14b is a second branch oil supply passage, 15 is a mechanical supercharger, F is an oil filter, and E is an engine.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsunehiro Mori 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Motor Corporation

Claims (5)

[Claims] 1. A mechanical supercharger mounting structure for an engine, wherein a mechanical supercharger is attached to an engine body via a supercharger mounting bracket having an oil supply port and an oil discharge port. A mechanical supercharger mounting structure for an engine, wherein an oil filter is attached to the bracket and an oil supply passage from the oil filter to the mechanical supercharger is formed. 2. The mechanical supercharger mounting structure for an engine according to claim 1, wherein the oil supply passage is formed so as to be branched together with the mechanical supercharger so that oil can be supplied to the engine side. . 3. The mechanical supercharger for an engine according to claim 1, wherein the oil drain passage from the mechanical supercharger is formed by a rigid pipe connecting the upper end and the lower end of the bracket. Mounting structure. 4. The supercharger mounting bracket has a vertical wall portion to be fastened to the engine and a horizontal portion to which the mechanical supercharger is mounted, and the rigid pipe is oblique to the vertical wall portion of the main body of the supercharger mounting bracket. The mechanical supercharger mounting structure for an engine according to claim 3, wherein the structure is extended in a direction and connected to a horizontal portion. 5. The size of the engine main body side oil supply passage between the inlet and the outlet is equal to the size of the oil filter side oil supply passage between the inlet and the outlet. The mechanical supercharger mounting structure for the engine according to 3 or 4.