JPH068713U - Engine oil reservoir device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the flexibility of the layout of the reservoir tank and improve the workability when removing oil. [Structure] An oil supply passage 5 for introducing oil pumped from the engine side to a reservoir tank 3, and an oil drain passage for opening excess oil in the tank to the oil pan side by opening to a predetermined higher level than the bottom surface of the tank. Connect 6 and
An auxiliary drain passage 7 that connects the bottom of the reservoir tank 3 to the oil drain side, and an opening 7A of the auxiliary drain passage 7 that penetrates the tank internal space from the upper surface of the reservoir tank 3.
A removable plug 8 is provided to close the plug.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of an oil reservoir device for storing engine oil.

[0002]

[Prior art]

 As an oil reservoir device in which a required amount of engine oil is secured by providing a reservoir tank outside the engine in addition to an oil pan having a limited capacity, there is one disclosed in JP-A-58-148214.

This is because an oil pan and an oil reservoir tank located on the side of the oil pan are communicated with each other through passages that open at the bottoms of the oil pan, regardless of the amount of oil returned to the reservoir tank or the oil pan. The oil level of the oil pan is the same as that of the reservoir tank.

[0004]

[Problems to be solved by the device]

 By the way, according to such a conventional device, there is a layout constraint that the reservoir tank must be provided on the side of the oil pan in order to manage the oil amounts of the oil pan and the reservoir tank at the same liquid level. In particular, in the case of an engine mounted on a vehicle, inconvenience also arises from the viewpoint of maintainability such as oil supply to and drainage from the reservoir tank.

Further, since oil is stored in both the oil pan and the reservoir tank, when it is necessary to drain all the engine oil for oil replacement, etc., the drain plugs of the oil pan and the reservoir tank must be removed. In addition to this, there is a risk of problems such as oil leaking from the drain port adhering to other parts during oil draining work.

The present invention has been made in view of such conventional problems, and an object thereof is to provide an oil reservoir device which is not restricted by the position of the reservoir tank and which allows easy oil replacement work. .

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a reservoir tank for temporarily storing engine oil is provided at a position higher than the engine oil pan, and an oil supply for introducing the oil pumped from the engine side is provided to this reservoir tank. Connect the passage to the oil drain passage that opens to a predetermined higher level than the bottom of the tank and returns the excess oil in the tank to the oil pan side.

Further, an auxiliary drain passage that connects the bottom of the reservoir tank to the oil drain side and a removable plug that penetrates the tank internal space from the upper portion of the reservoir tank and closes the opening of the auxiliary drain passage are provided.

[0009]

[Action]

 The oil pumped from the engine side is stored up to a level where the oil drain passage of the reservoir tank opens, and if it exceeds this level, it flows into the drain passage and is returned to the oil pan side. In this way, the oil level in the reservoir tank is controlled by the opening position of the oil drain passage, so the reservoir tank can be provided at a position higher than the oil pan.

On the other hand, when removing oil, the plug is removed from the upper surface of the reservoir tank. As a result, the bottom of the reservoir tank communicates with the oil drain side, so that all of the oil in the reservoir tank is returned to the oil pan. Therefore, the entire amount of engine oil can be drained by simply removing the drain plug from the oil pan.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is an engine body, 2 is an oil pan, and 3 is a reservoir tank.

The reservoir tank 3 is provided so as to be located near the cylinder head 1A of the engine body 1 as shown in the figure. Engine oil, which is pressure-fed from the engine side by an oil pump (not shown), is introduced into the reservoir tank 3 via an oil supply passage 5 in which an oil filter 4 is interposed.

As shown in FIG. 2, an oil drain passage 6 having an inlet passage portion 6 A rising from the bottom surface to the inside of the tank is connected to the inside of the reservoir tank 3, and the oil drain passage 6 is connected to the oil drain passage 6. The surplus oil flowing in from the inlet passage portion 6A via the above is returned to the oil pan 2. That is, the opening of the inlet passage portion 6A is opened at a high position in the tank inner space, and when the oil tries to increase from this position, the oil flows into the opening and is returned to the oil pan 2, so that the reservoir The oil level in the tank 3 is controlled at the position of the opening at the highest.

An auxiliary drain passage 7 for allowing the oil in the reservoir tank 3 to escape to the oil pan 2 at the time of draining the oil is connected to the reservoir tank 3 so as to open on the bottom surface of the tank. The auxiliary drain passage 7 may be configured so as to directly communicate the bottom portion of the reservoir tank 3 with the oil pan 2, but in this embodiment, it is connected to an intermediate portion of the oil drain passage 6.

As shown in FIG. 2, a plug 8 for closing the opening 7 A of the auxiliary drain passage 7 is provided in the reservoir tank 3 so as to penetrate the internal space from the tank upper surface.

The plug 8 has a cap portion 8A that fits into the upper surface opening 3A of the reservoir tank 3, a neck portion 8B extending downward from the cap portion 8A, and a lower end of the neck portion 8B. The plug portion 8C is configured to close the portion 7A, and the plug portion 8C is configured to close the auxiliary drain passage opening portion 7A at the same time when the cap portion 8A is tightened to the opening portion 3A.

Reference numeral 9 denotes an O-ring for sealing the openings 3 A and 7 A, and 10 denotes a filler cap for supplying oil to the reservoir tank 3 and the oil pan 3.

In the above structure, the oil pumped from the engine body 1 by the oil pump flows into the reservoir tank 3 through the oil filter 4 and the oil supply passage 5. When this inflow oil tries to increase above the opening level of the oil drain passage inlet portion 6A, it flows into the oil drain passage 6 from the inlet portion 6A and is returned to the oil pan 2. In this way, the oil level in the reservoir tank 3 is regulated at the opening position of the oil drain passage 6, so that even if the reservoir tank 3 is located higher than the oil pan oil level, it will remain in the reservoir tank 3. Will always store a certain amount of oil.

Further, when removing oil, the plug 8 is removed from the upper surface of the reservoir tank 3. As a result, the bottom of the reservoir tank 3 communicates with the oil drain passage 6, so that the entire amount of oil in the reservoir tank 3 is returned to the oil pan 2 via the auxiliary drain passage 7 and the drain passage 6. Therefore, all the oil in the engine can be drained by simply removing the drain plug (not shown) of the oil pan 2. At this time, the plug 8 can be removed from above the reservoir tank 3, and the drain plug can be simply removed by removing the bottom part of the oil pan 2 so that the work can be performed easily. There is no fear of polluting.

[0021]

[Effect of device]

 As described above, according to the present invention, since the reservoir tank can be arranged at a relatively high position of the engine, there are no restrictions on layout, and by removing the plug from the upper surface of the reservoir tank, the auxiliary drain passage is provided. Since the entire amount of engine oil, including the oil in the reservoir tank, can be drained from the drain plug on the bottom of the oil pan, the workability of draining oil is improved, and the surrounding oil is not contaminated by the drained oil. The effect is that the fear can be eliminated.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a sectional view showing details of the reservoir tank of FIG.

[Explanation of symbols]

 1 Engine Body 2 Oil Pan 3 Reservoir Tank 4 Oil Filter 5 Oil Supply Passage 6 Oil Drain Passage 7 Auxiliary Drain Passage 8 Plug

Claims (1)

[Scope of utility model registration request] 1. A reservoir tank for temporarily storing engine oil is provided at a position higher than an engine oil pan,
The reservoir tank is connected to an oil supply passage that introduces the oil that is pumped from the engine side and an oil drain passage that opens to a predetermined higher level than the bottom of the tank and returns the excess oil in the tank to the oil pan side. Along with
An auxiliary drain passage that connects the bottom of the reservoir tank to the oil drain side, and a removable plug that penetrates the tank internal space from the upper portion of the reservoir tank to close the opening of the auxiliary drain passage are provided. Oil reservoir device.