JP2015161234A - Oil pan device for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil pan device capable of simultaneously performing both of early temperature rise of oil in warming-up operation and cooling of the oil after warming-up operation.SOLUTION: A baffle plate 4 is disposed in an opening of a main body 2, and oil dropped onto the baffle plate 4 flows down from a flow-down part 4a. In the main body 2, an oil receiving part 9 is provided in a state of leaving a gap 13 between the flow-down part 4a and the oil receiving part 9, and an oil flow passage 10 extended along an inner periphery of the main body 2 is connected with the oil receiving part 9. When a temperature of the oil is low during warming-up operation, the oil is returned to the inside of the body 2 as it is, and is rapidly fed to an engine. Accordingly, early warming-up can be achieved. When the warming-up operation is completed and the temperature of the oil gets higher such that cooling is necessary, the oil flows into the oil receiving part 9 and flows through the oil passage 10, and thereby, the oil is cooled, and bubbles can be removed.

Description

  The present invention relates to an oil pan device for an internal combustion engine.

  In internal combustion engines, oil is required to have two functions that conflict with the engine temperature. In other words, when the temperature of the oil is low, such as when warming up after a cold start, the oil needs to be heated up early in order to reduce mechanical loss. In order to maintain, it is required to suppress the temperature rise.

  And in patent document 1, in order to aim at the early temperature rising at the time of warming-up operation, the oil which flowed down from the engine is received in one oil receiving part, and this is received by the strainer arrangement part by a U-shaped oil passage in a plan view. A configuration that leads to is disclosed.

JP 2010-255516 A

  In Patent Document 1, it can be said that the oil warmed by the engine is returned to the engine again, and a small amount of oil is circulated to the engine to achieve an early temperature rise. However, a small amount of oil simply circulates. Therefore, not only does it not contribute to the cooling performance when the temperature of the oil rises to a predetermined temperature, but there is also a concern that a small amount of oil circulates through the engine, leading to an early deterioration of the oil.

  Also, since the oil flows down from the engine and flows through the U-shaped oil passage in plan view, the phenomenon that the heat of the oil is absorbed into the oil passage during the warm-up operation occurs, and the effect of the early temperature rise is reduced. There is also a fear.

  The present invention has been made to improve the current situation, and aims to realize both an early temperature increase during warm-up operation and oil cooling during normal operation.

  The oil pan apparatus of the present invention includes a main body opened upward and a baffle plate disposed in the opening, and the oil dropped on the baffle plate is supplied from a lower part provided on a part of the outer periphery of the baffle plate. An oil receiving portion disposed in a state of being spaced apart from a flow lower portion of the baffle plate in a plan view on the main body or a partition member provided in the body or the baffle plate, and the oil An oil flow path arranged continuously along the inner periphery of the main body is provided in the receiving portion.

  The oil that has fallen on the baffle plate flows into the main body from the lower part when the temperature is lower than the reference value and the viscosity is high, and when the temperature is higher than the reference value and the viscosity is lower, the oil receiving part from the lower part. The flow location changes depending on the temperature, and the end of the oil flow path is open to the inside of the main body.

  The “reference value” in the above configuration does not mean that there is a clear number. For example, the oil temperature in the state where the engine is heated up to such an extent that the cooling water is cooled by the radiator is approximate. This means that it is used as a guide, and the distance between the flow lower part and the oil receiving part is set so that the oil receiving part is blown away when the temperature reaches that level.

  In the present invention, when the temperature of the oil is low, such as during a cold start, the viscosity is high and the flow velocity flowing on the baffle plate is slow. Dripping down and sent to the agency promptly. For this reason, the early temperature increase at the time of warm-up operation can be achieved. That is, when the temperature of the engine is low, early oil temperature rise can be realized by circulating a small amount of oil to the engine in a temperature rise state.

  On the other hand, after the warm-up operation is finished, for example, the temperature of the engine rises so that the cooling water is cooled by the radiator and the temperature of the oil rises and the necessity for cooling increases. Therefore, it jumps over the space, flows from the baffle plate to the oil receiver, flows from the oil receiver through the oil flow path and flows into the main body, but dissipates heat in the process of flowing through the oil receiver and oil flow path. The temperature can be lowered (cooled).

  Therefore, the cooling performance after the warm-up operation can be improved. Further, since air bubbles are removed in the process of oil flowing through the oil receiving portion and the oil flow path, it is possible to contribute to improvement of the lubricating performance.

It is a top view of the oil pan apparatus which concerns on 1st Embodiment. It is a separation top view of an oil pan apparatus. FIG. 3 is a sectional view taken along line III-III in FIG. 1. FIG. 4 is a sectional view taken along line IV-IV in FIG. 1. It is a figure which shows an effect | action. It is a figure which shows 2nd Embodiment. It is a figure which shows 3rd Embodiment. It is a figure which shows 4th Embodiment.

(1). First Embodiment Next, an embodiment of the present invention will be described with reference to the drawings. First, the first embodiment shown in FIGS. The oil pan apparatus 1 includes a main body 2 that opens upward, a partition member 3 that is disposed inside the main body 2, and a baffle plate 4 that is disposed in an opening of the main body 2. The three members may be made of metal or resin, but the main body 2 and the partition member 3 are preferably made of metal from the viewpoint of ensuring heat dissipation, and made of resin from the viewpoint of increasing heat insulation and increasing the temperature quickly. I can say. Either baffle plate 4 may be used.

  The main body 2 has a substantially rectangular shape in a plan view that is long in the direction of the crankshaft 5, and a flange 6 is formed at the upper end. On the other hand, the partition member 3 divides the inside of the main body 2 into the inside and the outside, has a bottom plate 3a and has a container shape, and is positioned inside the left and right longitudinal side portions 2a and the one end portion 2b of the main body 2. The three walls 3b are provided, and a narrow space is provided between the main body 2 and the wall 3b. For this reason, the inside of the main body 2 is divided into an outer tank 7 with a narrow interval and an inner tank 8 with a large volume located inside thereof.

  The partition member 3 is cut open at the other end 2 c of the main body 1, so that the outer tub 7 and the inner tub 8 inside the main body 2 communicate with each other at the other end 2 c of the main body 2. Yes.

  The baffle plate 4 covers the inside of the main body 2 from above except for a portion close to the other end 2c of the main body 2, and the one end 2b side of the main body 2 is high so that the other end 2c of the main body 2 Inclined so that the side is lower. Accordingly, the oil that has dropped or flowed down from above onto the baffle plate 4 flows toward the other end edge of the baffle plate 4. That is, the other edge of the baffle plate 4 is the flow lower part 4a.

  In the illustrated embodiment, the other end edge of the baffle plate 4 is the lower part 4a over the entire width, but only a part of the width direction can be the lower part 4a (in this case, oil flows). The flow rate increases.) Although not shown in the drawing, the baffle plate 4 is fixed to the main body 2 with screws or the like.

  Of the inner periphery of the main body 2, a flange-shaped oil receiving portion 9 that opens upward is formed over the entire width at the other end 2c, and the inner surfaces of the left and right long side portions 2a of the main body 2 are further formed. Is formed with an oil passage 10 extending continuously to the oil receiving portion 9, and the oil passage 10 extends to the one end 2 b of the main body 2. The end of the oil flow path 10 is interrupted at one end 2 b of the main body 2, and for this reason, a cut-off portion 11 that causes the oil flowing through the oil flow path 10 to flow down to the outer tub 7 is provided at the one end 2 b of the main body 2. Vacant. That is, the end of the oil flow path 10 is open to the outer tub 7 in the main body 2.

  The oil receiving portion 9 is inclined so that the middle portion in the width direction is the highest and becomes lower toward the oil flow passage 10, and the oil flow passage 10 has a start end connected to the oil receiving portion 9. It is the highest, and it inclines so that the termination | terminus which faced the slit part 11 may become the lowest. For this reason, the oil that has entered the oil receiving portion 9 flows through one of the left and right oil passages 10 and flows down from the one end portion 2 b of the main body 2 to the outer tub 7. A strainer 12 is disposed in a portion of the main body 2 close to the one end 2b, and the strainer 12 penetrates the baffle plate 4 (the strainer 12 may be attached to the baffle plate 4).

  A space 13 having a certain size in the plan view is vacant between the flow lower part 4 a of the baffle plate 4 and the oil receiving part 9 of the main body 2. For this reason, the oil dripped onto the baffle plate 4 hangs down from the flowing portion 4a into the main body 2 as shown in FIG. 5A, depending on the temperature (viscosity), or as shown in FIG. 5B. In addition, it jumps over the space 12 and jumps to the oil receiving portion 9.

  Therefore, the interval of the space 13 hangs down from the lower part 4a to the main body 2 at the temperature (viscosity) at the time of the warm-up operation, and flies from the lower part 4a to the oil receiving part 9 at the temperature in the state where the warm-up operation is finished. The dimensions are set.

  Therefore, during the warm-up operation, the oil that has traveled around the engine returns promptly to the main body 2 and is quickly sent again to the engine. For this reason, early temperature rise of oil is realizable. When the partition member 3 is provided inside the main body 2 as in the present embodiment, the oil returned from the flow-down part 4a can be quickly sucked into the strainer 12 in the inner tank 8, so that the effect of early temperature rise is further enhanced. .

  On the other hand, when the warm-up operation ends, the viscosity of the oil decreases and the flow velocity flowing down the baffle plate 4 increases, so that the oil flows down to the oil receiving portion 9 and enters the inside of the main body 2 via the oil passage 10. Return. The oil is efficiently cooled and fine bubbles are eliminated because it follows a long path upon this return.

  When the partition member 3 is provided as in the present invention, the oil flowing into the outer tub 7 from the one end portion 2b of the main body 2 rotates around the outer tub 7 outside the partition member 3 and reaches the other end portion 2c of the main body 2. Therefore, even in the process of flowing through the outer tub 7, heat is taken away by the main body 2 and the cooling performance is improved. Therefore, the partition member 3 plays both the roles of early temperature rise and improved cooling performance.

  In the present embodiment, the end of the oil flow path 10 is extended to the one end 2b of the main body 2, but the oil flow path 10 may be provided only on the left and right longitudinal side portions 2a of the main body 2. In this case, the length of the oil passage 10 can be arbitrarily set. Accordingly, it is possible to provide the oil flow path 10 only in about half of the left and right longitudinal side portions 2a of the main body 2.

  Now, when the operation of the engine is stopped, the oil returns to the oil pan 1, but when the oil has completely returned, the oil level may rise above the baffle plate 4. A phenomenon that the fitted portion hits the oil surface may occur and the oil may be scattered.

  In this regard, in the present invention, since the main body 2 has the same capacity as the conventional one and the oil receiving portion 9 and the oil flow path 10 are provided in an outwardly projecting state, the volume of oil can be increased. The oil level when the engine is stopped can be lowered while maintaining the same oil capacity. Accordingly, it is possible to prevent the oil surface from being struck by the connecting rod at the time of start-up and the oil scattering.

(2) Other Embodiments / Others In the first embodiment, the oil receiving portion 9 and the oil flow path 10 are provided in the main body 2, but in the second embodiment shown in FIG. A receiving part 9) is provided on the partition member 3.

  In the third embodiment shown in FIG. 7, the oil flow passage 10 is provided with auxiliary ribs 14 extending in the longitudinal direction thereof, thereby improving the heat dissipation performance and the bubble removal performance of the oil. There may be only one auxiliary rib 14.

  In the fourth embodiment shown in FIG. 8, the oil receiving portion 9 and the oil passage 10 are formed on the baffle plate 4. With this configuration, the structure is simplified. Since the oil flow path 10 is opened upward, it should be closed with a lid from above.

  The embodiment of the present invention has been described above, but the present invention can be embodied in various ways. For example, the partition member is an optional member, and there may be an aspect in which this is not used. Further, the oil receiving portion 9 and the oil flow path 10 may be configured as a member different from the main body 2 and fixed to the inner surface of the main body 2 by welding or the like. The strainer can also be placed near the bottom of the baffle plate.

  It is also possible to provide a flow lower portion on the left and right side edges of the baffle plate and to provide two oil receiving portions corresponding to the two flow lower portions. That is, there may be a plurality of flow sections and receiving sections. There may be only two oil flow paths.

  The present invention can be embodied in an oil pan apparatus. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Oil pan apparatus 2 Main body 3 Partition member 4 Baffle plate 4a Flowing part 7 Outer tank 8 Inner tank 9 Oil receiving part 10 Oil flow path 11 Cut-off part 13 Space

Claims (1)

It comprises a main body opened upward and a baffle plate disposed in the opening, and the oil dropped on the baffle plate is configured to flow down from a lower part provided on a part of the outer periphery of the baffle plate,
The main body or a partition member provided therein or the baffle plate, an oil receiving portion disposed in a state of being spaced apart from a flow lower portion of the baffle plate in a plan view, and the main body continuously to the oil receiving portion And an oil flow path arranged along the inner circumference of the
The oil that has fallen on the baffle plate flows from the lower part into the main body when the temperature is lower than the reference value and the viscosity is high, and when the temperature is higher than the reference value and the viscosity is lower, the oil flies from the lower part to the oil receiving part. By this, the pouring location is changed depending on the temperature, and the end of the oil passage is opened inside the main body,
An oil pan device for an internal combustion engine.

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