JPH0413422Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention shows a structure for mounting an engine auxiliary equipment on an engine, and in particular, a space is formed in the front of a cylinder block, and the engine auxiliary equipment is installed in the space. Concerning improvements to what has been done.

(Prior Art) Conventionally, as a structure for attaching engine auxiliary equipment to an engine, the left and right banks of a V-type engine are offset in the axial direction of the crankshaft, as disclosed in Japanese Patent Laid-Open No. 55-114845, for example. In this way, a space is formed in front of the cylinder block of the other bank, which is located at the rear of one bank, and an engine auxiliary device such as a distributor is placed in the space to shorten the length of the crankshaft. It is known that the engine is made more compact by making it more compact. In this case, the distributor is attached to a cylinder block and driven by a camshaft or the like.

(Problem to be solved by the invention) However, in the conventional engine accessory mounting structure described above, the distributor mounting portion of the cylinder block not only supports the distributor but also maintains the oil sealing property of the cam chamber. Therefore, it is difficult to reliably ensure both the mounting strength and oil sealing properties of the mounting portion.

The present invention has been developed in view of these points, and its purpose is to secure the mounting strength of the distributor using the mounting member, and to arrange the mounting member within the cylinder head cover and position it in an appropriate position. A sealing member is disposed at the distributor mounting portion to ensure oil sealing performance at the distributor mounting portion.

(Means for solving the problem) In order to achieve the above object, the solving means of the present invention forms a space in the front surface of the cylinder block,
A socket member into which the distributor is attached is disposed in the space, the lower end of the socket member is attached to the cylinder head, and an insertion opening into which the distributor is inserted is formed at the upper end of the socket member. Further, a cylinder head cover is attached to the cylinder head from above the socket member, and a through hole is provided in the upper surface of the cylinder head cover to allow the upper end of the socket member to pass through,
A seal member is interposed between the through hole and the socket member.

(Function) With the above configuration, in the present invention, the distributor is attached to the cylinder head via the socket member, so that the mounting strength of the distributor is ensured. Further, since the cylinder head cover is attached from above the socket member and a seal member is provided between the through hole and the socket member, oil sealing properties of the distributor mounting portion are ensured. .

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a V-type engine equipped with an engine accessory mounting structure according to an embodiment of the present invention. In the figure, 1 is a cylinder block, and 2 and 3 are cylinder heads of a left bank L and a right bank R respectively disposed on the cylinder block 1, and cylinder heads of the cylinder block 1 and the banks L and R respectively. There are three cylinders 4 between the heads 2 and 3, respectively.
4,4 are provided. The left bank L (the bank on the right side in Figure 1) is arranged rearward (upward in Figure 1) from the right bank R along the direction of the cylinder row, and the cylinders in the left bank L A space 5 is formed in the front of the block 1.

Furthermore, in each cylinder 4, two intake valves 6, 6 are arranged inside the bank, and two exhaust valves 7, 7 are arranged outside the bank. In the cylinder heads 2, 3 of each bank L, R, there is a camshaft 8 exclusively for intake that drives the above-mentioned intake valves 6, 6... and a camshaft 9 exclusively for intake that drives the exhaust valves 7, 7... each camshaft 8,
9 is driven by a crankshaft via a chain belt 10.

Furthermore, a distributor 11 for distributing ignition current to the spark plugs of each cylinder 4 is arranged in the space 5, and the distributor 11 is attached to the engine via a socket member 12. As shown in FIGS. 1 and 2, the socket member 12 is a cylindrical socket 12.
a, and three legs 12b, 12b, 12b provided at the lower end of the socket 12a and extending laterally, the socket 12a is substantially perpendicular to the upper surface of the cylinder head 2, and its lower end is connected to the exhaust air. The legs 12b, 12b, 12b are attached to the cylinder head 2 with bolts so as to be positioned on the inner side of the bank of the dedicated camshaft 9. Further, an insertion opening 12c for attaching a distributor is formed at the upper end of the socket 12a.

Furthermore, cylinder head covers 13 and 14 are arranged on each cylinder head 2 and 3 to cover valve train members, respectively, and the cylinder head cover 13 of the left bank L is attached to the socket member 12 from above. . A through hole 15 is formed in the upper surface of the cylinder head cover 13 of the left bank L, through which the upper end of the socket 12a of the socket member 12 passes.

Furthermore, a socket 1 corresponding to the through hole 15 is provided.
A ring groove 16 is formed around the upper end of 2a, and an O-ring 1 as a sealing member is inserted into the ring groove 16.
7 is installed, and an O-ring 17 provided between the through hole 15 and the socket member 12 ensures oil sealing within the cylinder head cover 13.

Then, the insertion opening 12c of the socket member 12
The distributor 11 is inserted in such a manner that a driven gear 11a at the lower end thereof meshes with a drive gear 9a formed on a camshaft 9 dedicated to exhaust. Further, a lock plate 18 for adjusting the ignition timing is disposed between the socket member 12 and the distributor 11. One end of the lock plate 18 is bolted to the distributor 11, and the other end is formed with a fitting opening 18a that fits externally into the upper end of the socket of the socket member 12, and the fitting opening 18a has a variable inner diameter. By changing the relative positional relationship between the socket 12a and the fitting opening 18, the phase of the rotor of the distributor 11 can be adjusted.

Therefore, in the above embodiment, the distributor 11 is arranged using the space 5 formed by shifting the banks L and R, so the length of the crankshaft is shortened, and the overall length of the engine is shortened. can be made compact.

Further, since the distributor 11 is attached to the cylinder head 2 via the socket member 12, the attachment strength of the distributor 11 can be ensured, and the socket member 12
Since the cylinder head cover 13 is attached from above and an O-ring 17 is provided between the through hole 15 of the cylinder head cover 13 and the upper end of the socket 12a, the oil sealing inside the cylinder head cover 13 is ensured. can be secured.

Furthermore, since the distributor 11 is attached to the cylinder head 12 via the socket member 12, the cylinder head 2 of the left bank L
Since there is no need to perform any special processing to directly insert the distributor 11, the cylinder heads 2 and 3 of the left and right banks L and R can be used in common.

In the above embodiment, a V-type engine has been described, but it goes without saying that the present invention can be applied to a general in-line engine.

(Effect of the invention) As explained above, according to the engine auxiliary mounting structure of the invention, the distributor can be mounted to the cylinder head via the socket member, and the socket member can be placed inside the cylinder head cover. Furthermore, since the sealing member is provided between the socket member and the cylinder head cover, the distributor can be mounted while ensuring the mounting strength and oil sealing properties of the distributor mounting portion.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view, and FIG. 2 is an enlarged cross-sectional view taken along the - line in FIG. 1. 1... Cylinder block, 2, 3... Cylinder head, 5... Space, 11... Distributor, 12... Socket member, 12c... Insertion port, 13, 14... Cylinder head cover, 15
...Through hole, 17...O ring.

Claims (1)

[Scope of utility model registration request] A space is formed in the front of the cylinder block,
A socket member into which the distributor is attached is disposed in the space, and the lower end of the socket member is attached to the cylinder head, and the upper end is formed with an insertion opening into which the distributor is inserted. A cylinder head cover is attached to the cylinder head from above the socket member, and a through hole is provided in the upper surface of the cylinder head cover to allow the upper end of the socket member to pass through, and the through hole and the socket member are connected to each other. An engine auxiliary equipment mounting structure for an engine, characterized in that a sealing member is provided between the parts.