JPS6345528Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lubricating device for a V-type engine, and more specifically, to a structure for attaching an oil filter to a V-type engine.

(Prior art and its problems) As a lubricating device for a V-type engine, one having a configuration disclosed in Japanese Patent Publication No. 15090/1984, for example, is known. This Japanese Patent Publication No. 54-15090 proposes a conventionally common lubricating device for V-type engines. Specifically, a main oil gear extending in the longitudinal direction of the cylinder block is provided at the base of the left and right banks of a cylinder block having both left and right banks, and in the vicinity of the left and right bank walls. A pair of oil pumps are provided so that oil is supplied from one main oil gear to one bank, and oil is supplied from the other main oil gear to the other bank. Further, an oil filter interposed between the oil pump that pumps up oil in the oil pan and the main oil gear is attached to one bank wall, so that the oil filter can be shared. That is, the oil filter is placed near the first main oil gear;
The oil pumped from the oil pump is purified through an oil filter and then supplied to one main oil gear, and from this one main oil gear to the other main oil gears. It's summery.

However, when a main oil gear is provided for each bank in this way, there is a problem in that it is difficult to distribute oil evenly to both left and right banks because the oil filters are shared. .

To solve this problem, we installed a main oil gear in the center between both banks above the crank chamber, that is, in the center of the cylinder block, and distributed the oil guided by this main oil gear to both the left and right banks. It is possible that According to this configuration, it is easy to evenly distribute oil to both the left and right banks, and since only one main oil gear is required, it is possible to simplify the configuration of the main oil gear.

However, if the main oil gear is located in the center of the cylinder block, its height will be higher than in the past, so if the oil filter is placed at the same height as in the past, the main oil gear and oil There is a difference in height between the main oil gear and the filter, and as a result, when the engine is stopped, a problem arises in that the oil in the main oil gear gallery flows down to the oil filter or oil pan. Of course, this problem is directly linked to deterioration of oil supply performance immediately after engine operation is restarted, and therefore becomes an important technical problem to be avoided.

One possible solution to this technical problem is to install the oil filter at almost the same height as the main oil gear; however, with such a configuration, the oil filter would be located near the top of the bank. Therefore, a new problem arises in that it is difficult to secure installation space for the auxiliary equipment provided near the top of the bank.

Therefore, the purpose of this invention is to provide the main oil gear in the center of the cylinder block, and to place the oil filter at a height that does not obstruct the installation space for auxiliary equipment. The purpose is to prevent deterioration of oil supply performance immediately after engine operation is restarted due to a height difference between the filter and the filter.

(Means and effects for solving the problems) Basically, the present invention firstly shortens the oil supply path to the main oil gear as much as possible. Secondly, when the engine is stopped, the oil filter becomes an oil storage chamber.

Specifically, in the center of the cylinder block, which is between a pair of banks that extend opposite to each other and is located in the center above the crank chamber, there is a main oil gear that extends along the direction in which the two banks extend. A lubricating device for a V-type engine configured to supply oil from an oil strainer to the main oil gear gallery through an oil filter provided in the middle of the oil passage, the cylinder block wall An oil filter attachment part is formed in the part, the oil filter attached to the oil filter attachment part is located below the main oil gear rally, and the oil passage is
The structure includes an upstream oil passage and a downstream oil passage with the oil filter as a boundary, the upstream oil passage extending straight up and down along the cylinder block wall, and the downstream oil passage passing through the oil. A downstream opening of an upstream oil passage communicating with the oil intake port of the oil filter is configured to extend linearly diagonally upward from the filter mounting portion toward the main oil gear gallery, and the oil filter mounting portion includes a downstream opening of an upstream oil passage communicating with the oil intake port of the oil filter; An upstream opening of a downstream oil passage is provided which communicates with the oil outlet of the oil filter, the downstream opening is located above the upstream opening, and the oil filter is arranged so that the oil filter is connected to the outside of the cylinder block wall. The oil filter is directly attached to the oil filter attachment part in a posture extending diagonally downward toward the direction of the oil filter.

With this configuration, the main oil gear and oil filter, and the oil filter and oil pan located in the center of the bank are connected to the upstream oil passage and downstream oil passage in the cylinder block, which are both straight paths. Therefore, they will be connected by the shortest distance. Further, by forming the communication passage between the oil filter and the main oil gear into a straight line, passage resistance can be reduced.

Furthermore, the relative height difference between the oil inlets and outlets of the oil filter, that is, the downstream opening of the upstream oil passage communicating with the oil inlet is located higher than the upstream opening of the downstream oil passage communicating with the oil outlet of the oil filter. Therefore, when the engine is stopped, the space inside the oil filter becomes an oil storage space. Since the oil filter is mounted in an inclined position extending diagonally downward from the cylinder block wall, most of the oil filter interior space is utilized as the oil storage space. Of course, this mounting position of the oil filter is also a necessary mounting position when the oil filter is disposed at a position lower than the main oil gear gallery and these elements are communicated in a straight line.

(Example) An example of a lubricating device for a V-type engine according to the present invention will be described below based on the drawings.

In FIGS. 1 and 2, 1 is a cylinder block, and this cylinder block 1 has a pair of left and right banks that extend opposite each other. Only the bank is shown, and this one-sided bank is designated by the reference numeral 2. The cylinder block 1 has a skirt portion 3 as a crankcase component and a bearing portion 4 of a crankshaft (not shown).
4a is its crank chamber, and the cylinder block 1 is located above the crank chamber 4a, and the intermediate portion between the left and right banks is the central portion 6 of the cylinder block where the main oil gear gallery 5 is formed. The main oil gear gallery 5 is configured to extend in the direction in which both the left and right banks extend. This main oil gear rally 5 is provided right above the bearing part 4 here, and between the main oil gear rally 5 and the bearing part 4 there is a lubrication passage 5a extending vertically.
is provided. Both the left and right banks are shaped like a V-shape toward the top, and the left and right bank walls are configured such that the bank walls face downward on the far side from each other, and the area near the top of the bank is used for auxiliary equipment. It is considered to be an installation space of the same type. In the cylinder block 1, an oil filter mounting portion 8 is formed on a cylinder block wall portion 7 extending along the direction in which the one side bank 2 extends. This oil filter mounting portion 8 is formed in a portion of the cylinder block wall portion 7 that is as close as possible to the main oil gear gallery 5 and does not get in the way as much as possible when installing auxiliary equipment. The oil filter 9 is configured to protrude obliquely downward from the oil filter 7, so that when the oil filter 9 is attached to the oil filter attachment part 8, the oil filter 9 is as far away from the auxiliary machinery installation space as possible. Reference numeral 10 denotes a mounting end surface of the oil filter, and 11 a recess opening toward the mounting end surface 10.

Oil is supplied to the main oil gear gallery 5 from an oil strainer (not shown) via an oil passage, and the oil passage is divided into an upstream oil passage 12 and a downstream oil passage 13 with the oil filter 9 as the boundary. The upstream oil passage 12 is configured to extend diagonally upward from below along the cylinder block wall 7, and the downstream oil passage 13 extends in the same direction as the upstream oil passage 12.
The downstream oil passage 13 extends from the oil filter mounting part 8 toward the main oil gear assembly 5 so as to be substantially perpendicular to the direction in which the oil filter mounting part 8 extends. It is configured to extend linearly diagonally upward toward the rally 5. As a result, the oil supply path to the main oil gallery 5 located in the central portion 6 of the cylinder block is the upstream oil passage 12 and the downstream oil passage 13 in the cylinder block 1, both of which are straight paths, and the oil supply path is the shortest distance. A supply route will be constructed.

The oil filter 9 includes a cylindrical case 14,
It is roughly composed of a filter element 15, a lid 16, and a bypass valve 17.
6 is formed with an oil intake port 18 and an oil outlet port 19 is formed in the center thereof. In the downstream oil passage 13, an enlarged diameter passage 20 is formed in the oil filter mounting portion 8, and this enlarged diameter passage 2
0 is provided with a mounting pipe 21, and this mounting valve 21 forms the upstream part of the downstream oil passage 13. This mounting pipe 21 is projected outward from the recess 11, and the projection A thread is formed on the outer peripheral surface of the end portion 22, and the oil filter 9
, the oil outlet 19 is connected to the downstream oil passage 13
The mounting pipe 21 is screwed onto the mounting pipe 21 so as to communicate with the upstream opening 13a of the oil filter mounting portion 8. 23 is an oil seal.

The recess 11 communicates with the upstream oil passage 12 via a communication passage 24, and the communication passage 24 forms a downstream opening of the upstream oil passage 12.
It is provided at a higher position than the upstream opening 13a of.

Oil from the oil strainer is taken into the oil filter 9 via the upstream oil passage 12, the communication passage 24, the recess 11, and the oil intake port 18,
After foreign substances are removed and the oil is cleaned by the filter element 15, it is pumped toward the main oil gear gallery 5 via the oil outlet 19 and the downstream oil passage 13.
The arrows indicate the flow of oil, and the symbol B indicates the oil level position of the oil stored in the oil filter when the engine is stopped. That is, since the downstream opening 24 is located higher than the upstream opening 13a, the amount of oil stored in the oil filter 9 when the engine is stopped is increased due to the inclined mounting position of the oil filter 9. is,
Most of the space inside the oil filter will be used as an oil storage chamber. Further, an upstream oil passage 12 and a downstream oil passage 13, which serve as oil passages for supplying oil to the main oil gallery 5 via the oil filter 9, are formed only within the cylinder block 1. The oil passage is not exposed to the outside, and the length of the oil passage is the shortest distance between the upstream oil passage and the downstream oil passage 13, both of which are straight as described above. When engine operation is restarted, oil can be quickly supplied from the oil strainer to the main oil gear gallery 5. In addition, since the downstream oil passage 13 from the oil filter 9 to the main oil gear 5 is a straight path, the length is as short as possible, and the passage resistance is small, this effect is compatible with the above effect. Oil can be quickly supplied to the main oil gear gallery 5 when the engine operation is restarted after the oil is blown.

(Effects of the invention) As is clear from the above explanation, according to the invention, when the main oil gear is provided in the center of the cylinder block between both banks, and the oil filter is directly attached to the cylinder block, Even if the oil filter is placed lower than the main oil gear in order to effectively secure the installation space for auxiliary equipment, the difference in height between the main oil gear and the oil filter may cause problems immediately after engine operation is resumed. Deterioration of oil supply performance can be prevented.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of essential parts of a lubricating device for a V-type engine according to the present invention, FIG. 2 is a cross-sectional view showing the configuration of an upstream oil passage of a lubricating device for a V-type engine according to the present invention, and FIG. 1 is a sectional view taken along the - line in FIG. 1. FIG. 1: Cylinder block, 2: One side bank, 5:
Main oil gallery, 6: Cylinder block center, 7: Cylinder block wall, 8: Oil filter mounting section, 9: Oil filter, 11: Recess, 12: Upstream oil passage, 13: Downstream oil passage, 18: Oil intake port, 19: Oil outlet port,
13a: Upstream opening; 24: Communication path (forms a downstream opening of the upstream oil passage).

Claims (1)

[Claims for Utility Model Registration] Main oil that extends along the direction in which the two banks extend in the center of the cylinder block that is located between a pair of banks extending opposite each other and above the crank chamber. A lubricating device for a V-type engine in which a gear is formed and oil from an oil strainer is supplied to the main oil gear through an oil filter provided in the middle of an oil passage, An oil filter mounting portion is formed on the cylinder block wall, the oil filter mounted on the oil filter mounting portion is located below the main oil gear, and the oil passage is
The structure includes an upstream oil passage and a downstream oil passage with the oil filter as a boundary, the upstream oil passage extending straight up and down along the cylinder block wall, and the downstream oil passage passing through the oil. A downstream opening of an upstream oil passage communicating with the oil intake port of the oil filter is configured to extend linearly diagonally upward from the filter mounting portion toward the main oil gear gallery, and the oil filter mounting portion includes a downstream opening of an upstream oil passage communicating with the oil intake port of the oil filter; An upstream opening of a downstream oil passage is provided which communicates with the oil outlet of the oil filter, the downstream opening is located above the upstream opening, and the oil filter is arranged so that the oil filter is connected to the outside of the cylinder block wall. A lubricating device for a V-type engine, characterized in that the lubricating device is directly attached to the oil filter attaching portion in a posture extending obliquely downward toward the direction of the oil filter.