JP3147398B2 - Cooling water pipe shape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shape of a cooling water pipe, and more particularly to a shape of a cooling water pipe provided in a space between cylinder banks of a V-type engine together with accessories and a fuel delivery pipe.

[0002]

2. Description of the Related Art Engines include a series engine in which cylinders are arranged in series, an opposed engine in which cylinders are arranged in an opposed state, and a V-type engine in which cylinders are arranged in a V-shape.

In the V-type engine, first and second cylinder banks are formed in a V-shape by mounting first and second cylinder heads above a V-shape cylinder block, respectively. .

In the V-type engine, a space is formed between the first and second cylinder banks, and an intake manifold, accessories, a fuel delivery pipe of the engine, and the like are disposed in the space.

[0005]

By the way, in the conventional V-type engine, a fuel delivery pipe 142 is disposed above the space 116 of the V-type engine 102 as shown in FIG. A fuel delivery union 156, which is an additional component of the V-type engine 102, was attached to one end of the fuel delivery pipe 142 (the lower side in FIG. 11).

However, the cooling water pipe (not shown) is
The fuel delivery union 156 is not disposed around the fuel delivery union 156. That is, there is no protection for the fuel delivery union 156 in the vicinity of the fuel delivery union 156, and only the fuel delivery union 156 is a space. It protruded above the portion 116.

As a result, when the V-type engine 102 is assembled or mounted, the fuel delivery union 15
6 may be damaged by contact with other parts, which is disadvantageous in practical use.

[0008]

SUMMARY OF THE INVENTION To solve the above-mentioned problems, the present invention provides a cooling water pipe disposed in a space between cylinder banks of a V-type engine, wherein a fuel delivery pipe is provided in the space. Is disposed along the cylinder head, a fuel delivery union is provided at one end of the fuel delivery pipe, and a pipe portion of the fuel delivery union is formed so as to protrude to the side of the fuel delivery pipe, and the cooling water pipe is formed. The fuel delivery pipe is bent along the fuel delivery pipe and the pipe section of the fuel delivery union, and is disposed above the fuel delivery union so as not to be directly above the fuel delivery union. The cooling water pipe is bent along the fuel delivery pipe and the pipe section of the fuel delivery union, and the cooling water pipe is arranged above the fuel delivery union, avoiding directly above the fuel delivery union,

[0009]

According to the invention described above, when the engine is assembled, the fuel delivery pipe is bent along the fuel delivery pipe and the pipe section of the fuel delivery union, and is disposed above the fuel delivery union so as not to be directly above the fuel delivery union. The installed cooling water pipe covers the fuel delivery union from above other than directly above, so that the fuel delivery union can be operated from directly above and the workability is maintained, while the fuel delivery union is maintained from above other than just above the fuel delivery union. The contact can be avoided and protected, and damage due to contact with other parts of the fuel delivery union 56 can be avoided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 10 show an embodiment of the present invention. 3 and 4, reference numeral 2 denotes a V-type engine, 4
Is a cylinder block. This V-type engine 2
A bearing cap 6 is provided at the lower part of the
And an oil pan 8 is mounted below the bearing cap 6. The first and second cylinder heads 10-1 and 10-1 are located on the upper surface of the cylinder block 4.
-2 and first and second cylinder head covers 12-1, 12
-2 is placed. The first cylinder head 10-
1 and the first cylinder head cover 12-1 are disposed on one side (the right side in FIG. 4) of the V-type engine 2, and the second cylinder head 10-2 and the second cylinder head cover 12-2 are connected to each other. It is arranged on the other side of the V-type engine 2 (left side in FIG. 4). By mounting the first and second cylinder heads 10-1 and 10-2, the first and second cylinder banks 14-1 and 14-2, which are one-side and other-side cylinder banks, are arranged in a V-shape. Has been established. This first,
A space 16 is formed between the second cylinder banks 14-1 and 14-2.

A crankshaft 18 is rotatably supported by the cylinder block 4 and the bearing cap 6 in the longitudinal direction of the V-type engine 2. The front end of the crankshaft 18 on the front side of the cylinder block 4 of the crankshaft 18 is provided to slightly protrude from the front end surface of the cylinder block 4 for mounting the crank pulley 20.

A power steering pump 22 is mounted on one side (the right side in FIG. 4) of the cylinder block 4. The power steering pump 22 is driven by rotation of a power steering pump shaft 26 to which a power steering pulley 24 is fixed.

An air conditioner compressor 28 is mounted on the other side (left side in FIG. 4) of the cylinder block 4. The air conditioner compressor 28 is driven by rotation of a compressor shaft 32 to which a compressor pulley 30 is fixed.

Further, a water pump 34 is attached to the cylinder block 4 above the crank pulley 20. The water pump 34 is driven by rotation of a water pump shaft 38 to which a water pump pulley 36 is fixed.

Furthermore, the first and second cylinder banks 14
-1, 14-2, the intake manifold 4
0 and a fuel delivery pipe 42 and an alternator 44 as an auxiliary machine are provided. This alternator 44
Is driven by rotation of an alternator shaft 48 to which the alternator pulley 46 is fixed.

A first driving belt 50 is wound around the crank pulley 20, the power steering pulley 24, and the alternator pulley 46. Also, the crank pulley 20
, Compressor pulley 30 and water pump pulley 36
, The second drive belt 52 is wound.

Further, below the power steering pulley 24, an oil filter 54 supported by the bearing cap 6 is provided.

The fuel delivery pipe 42
At one end, a fuel delivery union 56 is provided,
This fuel delivery union 56 is connected to the cooling water pipe 5
The cooling water pipe 58 is arranged near the fuel delivery union 56 of the V-type engine 2 so as to be protected by the cooling water pipe 8.

More specifically, the space 16 of the V-type engine 2
First and second fuel delivery pipes 4 for distributing fuel to a combustion chamber (not shown) inside the V-type engine 2
2-1 and 42-2 are the first and second cylinder heads 10-
They are disposed so as to extend in the front-rear direction of the V-type engine 2 along 1, 10-2. 2nd fuel delivery pipe 4
A fuel delivery union 56 is provided at the front end (lower side in FIG. 3) which is one end of 2-2. As shown in FIGS. 1 and 2, the fuel delivery union 56 includes a mounting portion 56a mounted to the front end (lower side in FIG. 2) of the second fuel delivery pipe 42-2, and a second fuel delivery pipe from the mounting portion 56a. 42-1 side space part 1
6 and a pipe portion 56b formed to protrude outward (to the left in FIG. 2). In the vicinity of the fuel delivery union 56, a cooling water pipe 58 that is directed below the intake manifold 40 in the front-rear direction of the V-type engine 2.
Is provided to protect the fuel delivery union 56.

The front end of the cooling water pipe 58 is shown in FIG.
As shown in FIG. 10, a cooling water suction side pipe portion 58-1 and a cooling water discharge side pipe portion 58-2 are integrally formed. A cooling water discharge side pipe portion 58- of the cooling water pipe 58;
1 and 2 are bent along the second fuel delivery pipe 42-2 and the pipe portion 56b of the fuel delivery union 56, as shown in FIGS.
In a plan view, the fuel delivery union 56 is slightly shifted from immediately above (directly to the lower side in FIG. 2) from just above the fuel delivery union 56, and is disposed above the fuel delivery union 56 so as to avoid a position directly above the fuel delivery union 56.

Next, the operation will be described.

When assembling the V-type engine 2, the cooling water discharge side pipe portion 58 at the front end of the cooling water pipe 58 disposed above the fuel delivery union 56, avoiding the position directly above the fuel delivery union 56.
-2 covers the fuel delivery union 56 from above except directly above, so that the fuel delivery union 56 can be operated from directly above and maintain operability, while contacting the fuel delivery union 56 from above other than directly above. To prevent the fuel delivery union 56 from being damaged by contact with other components.

Thus, the cooling water pipe 58
The fuel delivery union 56 of the V-type engine 2 can be protected, and damage due to contact with other parts of the fuel delivery union 56 during assembly and mounting of the V-type engine 2 can be reliably avoided, which is practically advantageous. In addition, the service life of the fuel delivery union 56 can be extended, which is economically advantageous.

Further, the fuel delivery union 5
By avoiding the breakage of No. 6, the distribution performance of the fuel delivery pipe 42 can be sufficiently exhibited.

Further, by covering the fuel delivery pipe 56 with the cooling water pipe 58, there is no need to provide a dedicated protection member, the number of parts can be reduced, and the cost can be kept low.

[0027]

As described above in detail, according to the present invention, the fuel delivery union can be operated from directly above and the workability is maintained, while avoiding contact from above the fuel delivery union from above. This is practically advantageous because damage due to contact with other parts of the fuel delivery union when assembling and mounting the V-type engine can be avoided. In addition, since the fuel delivery pipe is covered with the cooling water pipe, there is no need to provide a dedicated protection member, so that the number of parts can be reduced and the cost can be kept low.

[Brief description of the drawings]

FIG. 1 is an enlarged front view of a main part of a V-type engine according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a main part of a V-type engine.

FIG. 3 is a schematic plan view of a V-type engine.

FIG. 4 is a schematic front view of a V-type engine.

FIG. 5 is a schematic front view of a cooling water pipe.

FIG. 6 is a schematic plan view of a cooling water pipe.

FIG. 7 is a schematic explanatory view of a cooling water pipe.

FIG. 8 is a schematic explanatory view of a cooling water pipe.

FIG. 9 is a schematic end view of a cooling water pipe.

FIG. 10 is a schematic explanatory view of a cooling water pipe.

FIG. 11 is an enlarged view of a main part of a V-type engine showing a conventional technique of the present invention.

[Explanation of symbols]

 2 V-type engine 4 Cylinder block 10 Cylinder head 16 Space part 42-1 First fuel delivery pipe 42-2 Second fuel delivery pipe 56 Fuel delivery union 56a Mounting part 56b Pipe part 58 Cooling water pipe 58-1 Cooling water suction side Pipe section 58-2 Cooling water discharge side pipe section

Claims (1)

(57) [Claims] 1. A cooling water pipe disposed in the space between the cylinder banks of the V-type engine, full to the space
A fuel delivery pipe is installed along the cylinder head
A fuel delivery union is provided at one end of the fuel delivery pipe, and the pipe section of the fuel delivery union is protruded to the side of the fuel delivery pipe.
The cooling water pipe is connected to the fuel
Pipe section of re-delivery pipe and fuel delivery union
And the fuel
The shape of the cooling water pipe, which is arranged above the delivery union, avoiding it .