JP2015124697A - Baffle plate for oil pan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the lowering of an early-stage temperature rise effect of oil resulting from the formation of a relief hole for post-attaching a strainer, in a baffle plate which promotes an early-stage temperature rise of the oil by collecting the dripped oil into a guide cylinder and sucking it by the strainer.SOLUTION: A partitioning wall 16 for surrounding a relief hole 15 in a plane view is formed at a baffle plate 2. The partitioning wall 16 extends to the vicinity of an internal face of an oil pan 1. Since the inside of the oil pan 1 is partitioned by the partitioning wall 16, oil dripped into the relief hole 15 is not scattered to the oil pan 1, and the oil is quickly sucked to the strainer 3. Therefore, an early-stage temperature rise effect of the oil is not lowered due to the formation of the relief hole 15. Furthermore, since the oil which leaks from a clearance between a guide cylinder 13 and the strainer 3 is also quickly sucked into the strainer 3, an effect of early-stage warmup can be promoted.

Description

  The present invention relates to a baffle plate disposed in an oil pan of an internal combustion engine for a vehicle or the like.

  The oil pan of an internal combustion engine is often provided with a baffle plate to prevent the oil (lubricating oil) from scattering. However, a guide cylinder is provided on the baffle plate to collect the oil and flow it downward. In Patent Document 1, it is proposed that the suction is concentrated. In this patent document 1, the strainer is provided integrally with the baffle plate. Therefore, it is necessary to remove the baffle plate in order to replace the strainer.

JP 2012-177364 A

  If the oil flowing down from the baffle plate is intensively sucked by the strainer, the oil received around the engine can be concentrated and circulated to the engine again. There is an advantage that the machine can be realized.

  However, when the baffle plate is fixed to the oil pan and the strainer is fitted later, a relief hole for inserting and removing the strainer must be made in the baffle plate. Since it flows down, the collection property of the heat-receiving oil by the baffle plate is lowered, and the effect of the early warm-up is diminished.

  The present invention has been made in view of such a current situation, and intends to provide an improved baffle plate.

  The baffle plate of the present invention includes an upper plate portion that is disposed in the opening of the oil pan and receives oil dropped from the cylinder block, and a guide tube that collects and drops the oil dropped on the upper plate portion. The plate is configured to have a relief hole in which the strainer disposed in the oil pan can be inserted and removed up and down in a posture opening toward the opening at the lower end of the guide tube, and the escape hole and A partition wall is provided to surround the strainer.

  In the present invention, even if the oil received around the engine flows down from the escape hole to the oil pan, the presence of the partition wall prevents the oil flowing down from the escape hole from being diffused into the oil pan. You will be guided promptly to the entrance. Therefore, early warm-up can be realized without impairing the ease of inserting / removing (attaching / detaching) the strainer.

  Now, when the strainer is retrofitted and fitted into the oil pan through the baffle plate relief hole, there will be a slight gap between the guide tube discharge port and the strainer suction port. Since some of the oil discharged from the cylinder leaks out of this gap, unless special measures are taken, there is a risk that the suction amount of the heated oil will decrease and the effect of early warm-up will be reduced.

  On the other hand, in the present invention, since the strainer is surrounded by the partition wall, even if the oil discharged from the guide tube leaks from between the discharge port of the guide tube and the suction port of the strainer, Since it remains in the periphery of the strainer without diffusing inside, the heated oil can be efficiently sucked and circulated by the strainer. Also by this, the effect of early warm-up can be improved.

  In the present invention, since the partition wall also functions as a reinforcing rib, it is possible to eliminate the conventional reinforcing rib, and as a result, it is possible to suppress an increase in cost. Further, since the movement of oil inside the oil pan is restricted by the partition wall, when applied to an internal combustion engine for a vehicle, the oil moves excessively due to turning or tilting of the vehicle and the air is sucked into the strainer. This can also be prevented.

FIG. 3 is a partially cutaway schematic side view of a strainer, a baffle plate, and an oil pan 4; (A) is a perspective view of an oil pan, (B) is a perspective view of a baffle plate. It is a top view. It is a bottom view of a baffle plate. FIG. 5 is a cross-sectional view taken along line V-V in FIG. 2.

  Next, an embodiment of the present invention will be described with reference to the drawings. The present invention is applied to an internal combustion engine for a vehicle. The internal combustion engine is an oil pan fixed to the lower surface of a cylinder block (not shown) as shown in FIG. 1 as a component related to oil (lubricating oil). 1 and a baffle plate 2 and a strainer 3 disposed therein.

  The strainer 3 has a vertical cylinder 4 extending above and below the baffle plate 2 and an obliquely downwardly inclined suction port 5 provided at the lower end of the vertical cylinder 4. An outlet 6 is provided. The discharge port 6 is connected to an oil pump via an oil passage (not shown). The strainer 3 is fixed to, for example, a chain cover fixed to one end face of the cylinder block (it can also be fixed to the cylinder block).

  The oil pan 1 is a cast product or a die-cast product, and a portion where the strainer 3 is disposed is a deep bottom portion 7. At the upper end of the oil pan 1, a flange 8 fixed to the cylinder block is provided over the entire circumference.

  As shown in FIG. 2A, the oil pan 1 is provided with a group of reinforcing ribs 9 extending inward from the wall and three shoulders 10 that support the baffle plate 2. The shoulder portion 10 has a height dropped from the upper surface of the oil pan 1. Further, although the three shoulder portions 10 are provided close to the one end portion 1a, they may be arranged on the entire circumference.

  The baffle plate 2 is made of resin, and includes an upper plate portion 11 that is substantially similar to the shape of the oil pan 1 in a plan view, and a downward guide tube 12 that is provided at a substantially central portion of the upper plate portion 11. The portion 11 is gently inclined so as to become lower toward the guide tube 12. Therefore, the oil dripped down on the upper plate portion 11 is collected in the guide tube 12 and flows down toward the oil pan 1. The upper plate portion 11 is provided with a boss portion 11a that overlaps the shoulder portion 10 of the oil pan 1, and the boss portion 11a is fixed to the shoulder portion 10 with a screw (not shown).

  At the lower end of the guide cylinder 12, a lateral discharge port 13 that protrudes toward the one end 1 a of the oil pan 1 is provided. Accordingly, the guide tube 10 has an L shape in a side view. About half of the front end side of the discharge port 13 is cut upward (a cut-open portion is indicated by reference numeral 14), and the front end portion of the suction port 5 in the strainer 3 is fitted into the cut-out portion 14 from above. ing.

  Further, as shown in FIG. 1, the discharge port 13 has a substantially lower half portion cut out in a side view (a downward cut-out portion is indicated by reference numeral 15). The downward slit 15 is for bringing the suction port 5 of the strainer 3 as close to the bottom surface of the oil pan 1 as possible, so that even if the oil level changes due to turning of the vehicle, the strainer 3 The entire suction port 5 can always be kept immersed in oil.

  The strainer 3 is inserted into the oil pan 1 after fixing the baffle plate 2 to the oil pan 1. Therefore, the upper plate portion 11 of the baffle plate 2 has an escape hole 16 for inserting and removing the strainer 3 in the vertical direction. An upward reinforcing rib 16 a is formed around the escape hole 16. The reinforcing rib 16a also serves as a weir wall, so that the oil dripping onto the upper plate portion 11 does not flow down into the escape hole.

  For example, as can be easily understood from FIG. 3, the left and right partition walls 17 that partition the inside of the oil pan 1 into an area where the strainer 3 is disposed and an area where the strainer 3 is not disposed are formed on the lower surface of the upper plate portion 11 of the baffle plate 2. Are integrally provided in a substantially V-shaped posture in which the interval is widened toward the one end 1a side of the oil pan 1. The partition wall 17 is connected to both the upper plate portion 11 and the guide tube 12. Therefore, a high reinforcing effect is also exhibited.

  As shown in FIG. 5, there is a slight gap between the partition wall 17 and the inner surface of the oil pan 1. Therefore, it is not hindered that oil circulates throughout the oil pan 1. One partition wall 17 intersects with the reinforcing rib 9 of the oil pan 1 in a plan view. Therefore, as shown in FIGS. 1 and 4, a notch groove 18 that fits into the reinforcing rib 9 is formed in one partition wall 17 (in FIG. 1, only the rear partition wall 17 is shown. Absent.).

  As shown in FIG. 4, reinforcing ribs 19 located on the opposite side of the partition wall 17 are provided on the lower surface of the baffle plate 2. The reinforcing rib 19 does not extend to the vicinity of the bottom surface of the oil pan 1 and does not have a function of regulating the oil flow.

  In the above configuration, the oil dripping onto the upper plate portion 11 of the baffle plate 2 is collected in the guide cylinder 12 and flows out from the discharge port 13 to the inside of the oil pan 1, but the strainer 3 is sucked into the discharge port 13 from above. Since the mouth 5 is fitted, the oil heated up around the engine is intensively sucked and recirculated to the engine.

  The oil also drips down to the escape hole 16, but the oil pan 1 is partitioned by the partition wall 17, so that the oil dripping from the escape hole 16 does not diffuse into the oil pan 1. Then, it is quickly sucked into the suction port 5 of the strainer 3. In addition, there is a certain gap between the discharge port 13 of the guide tube 13 and the suction port 5 of the strainer 4, and the oil discharged from the discharge port 13 of the guide tube 13 leaks to some extent from this gap. Since the oil leaked from the gap stays in the area around the strainer 4 and does not diffuse to the area outside the partition wall 17, the function of sucking the oil discharged from the guide tube 13 into the strainer 3 can be improved. .

  These synergistic actions ensure that oil is circulated efficiently and early warm-up is achieved, although the strainer 3 is a type that is retrofitted. In particular, as in the embodiment, when the two partition walls 17 are in a V-shaped (or C-shaped) posture in which the interval is widened toward the escape hole 16 in plan view, the oil in the area surrounded by the partition walls 17 is reduced. Since it is guided by the partition wall 17 toward the suction port 5 of the strainer 3, there is an advantage that the early temperature rise of the oil can be further ensured.

  Further, since the movement of the oil inside the oil pan 1 is regulated by the partition wall 17, even if kinetic energy is applied to the oil in the oil pan 1 when the vehicle turns, starts / stops, travels on a slope, etc., the oil is excessive. The oil pan 1 does not move greatly. For this reason, the front-end | tip of the suction port 5 of the strainer 3 can always be hold | maintained in the state immersed in oil, and mixing of the air to the oil surrounding an engine can be prevented.

  Although the illustrated partition wall 16 has a linear posture in plan view, it can be formed in a square shape that is bent in plan view or can be gently curved. In any case, it is preferable that the two partition walls have a substantially C-shaped (or V-shaped) posture in which the interval increases as the distance from the guide tube 12 increases.

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

DESCRIPTION OF SYMBOLS 1 Oil pan 2 Baffle plate 3 Strainer 5 Strainer suction port 11 Upper plate portion 12 Guide tube 13 Discharge port 14 Cut-off portion 16 Relief hole 17 Partition wall

Claims (1)

An upper plate portion that is disposed in the opening of the oil pan and receives oil dripped from the cylinder block, and a guide tube that collects the oil dropped on the upper plate portion and flows downward, and the upper plate portion includes: A configuration in which a strainer arranged on the oil pan in a posture opened toward the opening at the lower end of the guide tube has a relief hole that can be inserted and removed up and down;
And a partition wall surrounding the escape hole and the strainer.
Oil pan baffle plate.

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