KR20200017675A - Engine with cylinder block embedding oil pump - Google Patents

Abstract

The present invention relates to an engine including an oil pump in a cylinder block and, more specifically, to an engine including an oil pump in a cylinder block capable of simplifying the flow path structure of an engine and reducing costs for processing as well as effectively preventing the leakage of engine oil by forming an engine oil circulation structure only with flow paths in a cylinder block in which an oil pump is installed. According to the present invention, disclosed is an engine (100) including: a cylinder block (130) including a cavity (131) formed on one lateral side; and an oil pump (150) installed on one lateral side of the cylinder block (130) by using the cavity (131) as a housing. The cylinder block (130) comprises: a first flow path (133) directly connected to the cavity (131) to supply engine oil to the oil pump (150); and a second flow path (134) directly connected to the cavity (131) to supply the engine oil supplied from the oil pump (150) to an oil filter (160).

Description

ENGINE WITH CYLINDER BLOCK EMBEDDING OIL PUMP}

The present invention relates to an engine in which an oil pump is provided in a cylinder block. More specifically, an oil pump is provided in a cylinder block to configure an engine oil circulation structure using only the flow path inside the cylinder block, thereby simplifying the flow path structure of the engine. The present invention relates to an engine having an oil pump that can reduce processing costs and effectively prevent leakage of engine oil.

Usually, in the agricultural work vehicle 1, such as a tractor, as shown in FIG. 1, the engine 10 etc. are arrange | positioned in the engine room 5, and a dynamometer is comprised. At this time, the engine 10 is provided with an oil pump to supply the engine oil to the various structures of the engine 10.

However, as shown in FIG. 2, in the conventional engine 10, the oil pump 15 is typically provided in the timing gear case 11, whereby the engine oil is the engine 10. 2) through a flow path formed in the oil pan 12 (FIG. 2 (A)), and to the oil pump 15 through a flow path formed in the timing gear case 11 (FIG. 2 (B)). And then pumped by the oil pump 15 again through the flow path of the timing gear case 11 (FIG. 2C) through the flow path of the oil pan 12 (FIG. 2D). It is transmitted to the flow path of the cylinder block 13 of the engine 10 (FIG. 2E), and supplies the engine oil to various structures of the engine 10.

As described above, in the conventional engine 10, the oil pump 15 is provided in the timing gear case 11, and not only has a complicated structure in which the engine oil passes through a complicated flow path, but also the service life of the engine 10 is increased. However, leakage of engine oil may occur at a connection portion between the timing gear case 11 and the cylinder block 13, and the manufacturing cost is complicated as the manufacturing process becomes complicated.

Accordingly, it is possible to simplify the structure of the flow path in the engine 10, reduce the processing cost, etc., thereby lowering the unit cost, and further, an oil pump 15 arrangement and a flow path structure capable of preventing leakage of engine oil may be preferable. The engine 10 which has effectively solved such a problem is not yet disclosed.

Republic of Korea Patent Publication No. 10-2012-0136601 (2012.12.20.)

The present invention has been made to solve the above problems, it is an object of the present invention to simplify the structure of the flow path in the engine 10, reduce the processing cost, etc. to provide an engine 10 that can lower the unit cost.

In addition, an object of the present invention is to provide an engine 10 having an arrangement structure of an oil pump 15 that can prevent leakage of engine oil at a connection portion of the engine 10 or the like.

Other detailed objects of the present invention will be apparently understood and understood by those skilled in the art through the detailed description described below.

In order to solve the above problems, the engine 100 according to an embodiment of the present invention, the cylinder block 130 is formed with a cavity 131 on one side; And an oil pump 150 provided at one side of the cylinder block 130 using the cavity 131 as a housing, wherein the cylinder block 130 is directly connected to the cavity 131 to the oil. The first flow path 133 for supplying the engine oil to the pump 150 and the second flow path for supplying the engine oil supplied from the oil pump 150 directly connected to the cavity 131 to the oil filter 160 ( 134) is formed.

In this case, the cavity 131 may be shielded by the oil pump cover 154 while embedding a part or all of the components constituting the oil pump 150.

In addition, the cylinder block 130, the first passage 133 and the second passage 134 is formed in a horizontal direction, is connected to the first passage 133, the engine oil of the oil sump 121 The oil sump connecting passage 132 for supplying engine oil to the first passage 133 may be formed in a vertical direction.

In addition, the oil sump connecting passage 132 may be formed in an intermediate region of the first cylinder 137 closest to the oil pump 150 and the second cylinder 138 adjacent to the first cylinder 137. have.

In addition, the cylinder block 130, a third flow path 135 for supplying the engine oil supplied from the oil filter 160 to the main gallery 136 may be formed in a vertical direction.

In this case, the third passage 135 is the second cylinder 138 adjacent to the first cylinder 137 closest to the oil pump 150 and the third cylinder 139 adjacent to the second cylinder 138. It may be formed in the middle region of the).

In addition, a lower portion of the oil filter 160 is provided with a relief valve 170 so that when the oil pressure of the engine oil drawn into the oil filter 160 exceeds a predetermined reference value, a part or all of the engine oil may be oil pan 120. Can be discharged.

By the above-described configuration, in the engine 100 according to an embodiment of the present invention, the oil pump 150 is provided in the cylinder block 130 to constitute the engine oil circulation structure using only the flow path inside the cylinder block 130. By doing so, the structure of the flow path in the engine 100 can be simplified and the processing cost can be reduced, thereby lowering the product cost, and further, has an effect of preventing leakage of the engine oil.

1 is an illustration of a typical agricultural work vehicle 1 equipped with an engine 10.
2 is a diagram illustrating the structure of the oil pump 15 provided in the timing gear cover 11 in the conventional engine 10.
3A and 3B are perspective and exploded views of an engine 100 having an oil pump 150 according to an embodiment of the present invention provided in a cylinder block 130.
4 to 6 are diagrams illustrating the circulation structure of the engine oil in the engine 100 in which the oil pump 150 according to the exemplary embodiment of the present invention is provided in the cylinder block 130.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be described in detail with reference to the accompanying drawings.

The following examples are provided to assist in a comprehensive understanding of the methods, devices, and / or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification. The terminology used in the description is for the purpose of describing particular embodiments only and should not be limiting. Unless expressly used otherwise, the singular forms “a,” “an,” and “the” include plural forms of meaning. In this description, expressions such as "comprises" or "equipment" are intended to indicate certain features, numbers, steps, actions, elements, portions or combinations thereof, and one or more than those described. It should not be construed to exclude the presence or possibility of other features, numbers, steps, actions, elements, portions or combinations thereof.

In addition, terms such as first and second may be used to describe various components, but the components are not limited by the terms, and the terms are used to distinguish one component from another component. Only used as

Hereinafter, exemplary embodiments of the engine 100 having the oil pump 150 according to an embodiment of the present invention provided in the cylinder block 130 will be described in detail with reference to the accompanying drawings.

First, Figure 3a illustrates a structure in which the oil pump 150 is provided in the cylinder block 130 in the engine 100 according to an embodiment of the present invention. As can be seen in Figure 3a, the engine 100 according to an embodiment of the present invention, the cylinder block 130, the cavity 131 is formed on one side and the cylinder 131 as a housing the cylinder It comprises an oil pump 150 provided on one side of the block 130, wherein the cylinder block 130, directly connected to the cavity 131 to supply the engine oil to the oil pump 150 A first flow path 133 and a second flow path 134 are directly connected to the cavity 131 to supply the engine oil supplied from the oil pump 150 to the oil filter 160 of FIG. 6.

Accordingly, in the engine 100 according to an embodiment of the present invention, not only the cost of the product may be lowered by simplifying the structure of the flow path and reducing the processing cost, but also leakage of engine oil at the connection part of the engine 10. It has the advantage that it can prevent.

That is, in the conventional engine 10, as shown in FIG. 2, the oil pump 15 is provided in the timing gear case 11 while forming a complex structure in which the engine oil passes through a complicated flow path, and the processing cost is high. Increased and complicated manufacturing process not only increases the manufacturing cost, but also increases the service life of the engine 10, the oil leakage of the engine oil occurs at the connection portion of the timing gear case 11 and the cylinder block 13, etc. I followed the problem.

On the other hand, in the engine 100 according to an embodiment of the present invention, by providing an oil pump 150 in the cylinder block 130 to configure the engine oil circulation structure only in the flow path inside the cylinder block 130, By simplifying the structure of the flow path in the engine 100 and reducing the processing cost, the product cost can be lowered, and further, leakage of the engine oil can be prevented.

Hereinafter, the oil pump 150 according to an embodiment of the present invention looks at the engine 100 provided in the cylinder block 130 in detail for each component.

First, in the engine 100 in which the oil pump 150 according to the exemplary embodiment of the present invention is provided in the cylinder block 130, as shown in FIG. 3A, a cylinder 131 is formed at one side thereof. Block 130 is provided.

In addition, in the present invention, the cavity 131 may supply the first oil passage 133 for supplying engine oil to the oil pump 150 and the engine oil supplied from the oil pump 150 to the oil filter 160. It has a structure directly connected to the second flow path (134).

Accordingly, the oil pump 150 is configured by using the cavity 131 formed at one side of the cylinder block 130, and further, a first flow path, which is a flow path of engine oil connected to the oil pump 150 ( By allowing the 133 and the second flow path 134 to be directly connected to the cavity 131, the flow path structure of the engine can be simplified and the processing cost can be reduced, and the leakage of the engine oil can be effectively prevented.

In this case, the first flow path 133 and the second flow path 134 may be formed through a drill process, but the present invention is not limited thereto. In addition, the first flow path 133 and It is possible to form the second flow path 134 and the like.

Next, in the engine 100 in which the oil pump 150 according to an embodiment of the present invention is provided in the cylinder block 130, the oil pump 150 is formed at one side of the cylinder block 130. The cavity 131 can be configured as a housing.

Accordingly, the cavity 131 functions as a housing for constituting the oil pump 150, and as shown in FIG. 3B, the inner rotor 152, the outer rotor 151, and the rotor shaft 153 are provided. Some or all of the parts constituting the oil pump 150 may be embedded, and then, the oil pump 150 is shielded by the oil pump cover 154 to form the oil pump 150. Furthermore, although the trochoid type oil pump 150 is illustrated in FIG. 3B, the present invention is not necessarily limited thereto, and various types of oil pumps 150 such as an involute type may be used. .

4 to 6 illustrate the circulation structure of the engine oil in the engine 100 in which the oil pump 150 according to the embodiment of the present invention is provided in the cylinder block 130.

4 to 6 below, the oil pump 150 according to an embodiment of the present invention looks at the circulation structure of the engine oil in the engine 100 provided in the cylinder block 130 in more detail.

First, as can be seen in Figure 4, the engine oil is supplied from the oil sump 121 through the oil sump connecting flow passage 132 (A1 in Figure 4) and is transferred to the first flow passage 133 (Fig. 4 (A2)), and thus is supplied to the oil pump 150 through the first flow passage 133 (A3 in FIG. 4).

Subsequently, the engine oil pumped by the oil pump 150 is supplied to the oil filter 160 via the second flow path (FIG. 4 (B1)) (FIG. 4 (B2)), and the oil filter ( The engine oil filtered at 160 is supplied to the third passage 135 (FIG. 4 (C1)) and is supplied to the main gallery 136 connected to the third passage 135 (C2 of FIG. 4). ).

Accordingly, the engine oil supplied to the main gallery 136 is distributed to several flow paths ((D1) and (D2) of FIG. 4), and is supplied to the first cam journal (183 of FIG. 6) or (FIG. 4). (E1)), the engine head (184 of FIG. 5) (Fig. 4 (E2)) such as to supply the engine oil to the various structures of the engine 100.

More specifically, as shown in FIG. 5, in the engine 100 in which the oil pump 150 according to the exemplary embodiment of the present invention is provided in the cylinder block 130, the oil pump 150 is an oil sump 121. After receiving the engine oil from the oil filter 160 is supplied and filtered through the main gallery 136, the main journal 181, the front gear 182, the first cam journal (183), the engine head 184 And supply the engine oil to various structures of the engine 100 such as the second cam journal 185.

In this case, the oil pump 150 receives the engine oil from the oil sump 121 through the oil sump connecting passage 132 and the first passage 133, and the oil filter 160 receives the oil pump ( The engine oil is supplied through the second passage 134 from the 150 and the main gallery 136 receives the engine oil from the oil filter 160 via the third passage 135. Engine oil is supplied to various structures such as 181).

Furthermore, as can be seen in Figure 5, the engine 100 is provided with a relief valve 170 is pumped from the oil pump 150, the pressure of the engine oil supplied to the oil filter 160 is predetermined When the reference value is exceeded, part or all of the engine oil may be discharged to the oil sump 121 to constantly adjust the pressure of the engine oil supplied to the engine 100.

In addition, in the engine 100 in which the oil pump 150 according to the exemplary embodiment of the present invention is provided in the cylinder block 130, as shown in FIG. 6, the first passage 133 and the second The flow path 134 may be formed in a horizontal direction in the cylinder block 130. Further, the flow path 134 may be connected to the first flow path 133 to transfer the engine oil of the oil sump (121 in FIG. 5) to the first flow path 133. An oil sump passage 132 for supplying engine oil to the furnace may be formed in a vertical direction in the cylinder block 130.

Further, the oil sump connecting passage 132 is formed in the middle region of the first cylinder 137 closest to the oil pump 150 and the second cylinder 138 adjacent to the first cylinder 137. It is preferable.

More specifically, as can be seen in Figure 6 (b), when looking at the structure of the cylinder block 130 that can use only a limited space for forming the flow path, the first channel 133 and the second channel 134 is preferably formed in a horizontal direction directly connected to the cavity 131 is formed on one side of the cylinder block 130, and further, the piston and the crank shaft disposed in the cylinder block 130, etc. The oil sump connecting flow path 132 disposed in the vertical direction in consideration of the restriction of the flow path arrangement space according to the structure of the first cylinder 137 and the first cylinder 137 closest to the oil pump 150 may be formed. More preferably, it is formed in the middle region of the adjacent second cylinder 138.

Accordingly, as can be seen in Figure 6, the oil sump connecting flow path 132 is formed in a vertical direction in the middle region of the first cylinder 137 and the second cylinder 138 to oil the engine oil It is pulled up from 121 of FIG. 5 and supplied to the first passage 133 ((A1) of FIGS. 6 (a) and 6 (b)), and the first passage 133 is the oil sump connecting passage ( The engine oil supplied through 132 is moved in the horizontal direction and supplied to the oil pump 150 ((A3) of FIG. 6 (b)). In addition, the second channel 134 moves the pumped engine oil in the horizontal direction through the oil pump 150 to supply the oil filter 160 ((B1) of FIG. 6 (b)).

In addition, the cylinder block 130, a third flow path 135 for supplying the engine oil supplied from the oil filter 160 to the main gallery 136 may be formed in a vertical direction.

In addition, the third passage 135 may include a second cylinder 138 adjacent to the first cylinder 137 closest to the oil pump 150 and a third cylinder 139 adjacent to the second cylinder 138. It is preferable that it is formed in the middle region of ().

More specifically, as can be seen in Figure 6 (b), the space that can be used for forming the flow path in the cylinder block 130 is limited, in particular the third flow path 135 from the oil filter 160 The engine oil to be supplied should be supplied to the main gallery 136 located above, and the third passage 135 is preferably formed in the vertical direction.

Furthermore, it is preferable that the oil sump connecting passage 132 is disposed close to the oil pump 150 with the restriction of the flow path arrangement space according to the structure of the piston and the crankshaft, etc. disposed inside the cylinder block 130. In view of this, as shown in FIG. 6 (b), the third passage 135 may include a second cylinder 138 adjacent to the first cylinder 137 closest to the oil pump 150, and It is preferable to form in the vertical direction in the middle region of the third cylinder 139 adjacent to the second cylinder 138.

More specifically, as shown in FIG. 6, the third flow path 135 is formed in a direction perpendicular to the middle region of the second cylinder 138 and the third cylinder 139 to be oil filter 160. The engine oil filtered in the pull up is supplied to the main gallery 136 ((C2) of Figure 6 (a), 6 (b)).

Accordingly, in the engine 100 in which the oil pump 150 according to the exemplary embodiment of the present invention is provided in the cylinder block 130, the oil sump connecting passage 132 in the limited space of the cylinder block 130, By forming the first flow path 133, the second flow path 134, the third flow path 135, and the like, the engine oil circulation structure can be configured using only the flow path inside the cylinder block 130.

Furthermore, as can be seen in Figure 6 (b), when the lower portion of the oil filter 160 is provided with a relief valve 170 so that the oil pressure of the engine oil drawn into the oil filter 160 exceeds a predetermined reference value By discharging part or all of the engine oil to the oil pan 120, it may be adjusted to maintain a constant hydraulic pressure of the engine oil supplied to the engine 100.

In addition, as can be seen in Figure 6 (a), one side of the cylinder block 130, the idle gear 190 used to drive the oil pump 150 in conjunction with the oil pump gear 155. ) May be provided.

Accordingly, in the engine 100 in which the oil pump 150 according to the exemplary embodiment of the present invention is provided in the cylinder block 130, the oil pump 150 is provided in the cylinder block 130 to provide the cylinder block 130. By constructing a structure in which the engine oil can be circulated only by the flow path inside, the structure of the flow path in the engine 100 can be simplified and the processing cost can be reduced, thereby lowering the product cost and further preventing leakage of the engine oil. Will be.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and are not limited to these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1: agricultural work vehicle 5: engine room
10: engine 11: timing gear case
12: oil pan 13: cylinder block
15: oil pump 100: engine
110: timing gear case 120: oil pan
121: oil sump 122: oil absorption pipe
130: cylinder block 131: cavity
132: oil sump connecting passage 133: first euro
134: second euro 135: third euro
136: main gallery 137: the first cylinder
138: second cylinder 139: third cylinder
150: oil pump 151: outer rotor
152: inner rotor 153: rotor shaft
154: oil pump cover 155: oil pump gear
156: nut 160: oil filter
170: relief valve 181: main journal
182: Front Gear 183: First Cam Journal
184: engine head 185: second cam journal
190: children gear

Claims (7)

A cylinder block 130 having a cavity 131 formed at one side thereof; And
It includes; and the oil pump 150 provided on one side of the cylinder block 130 using the cavity 131 as a housing,
The cylinder block 130,
A first passage 133 which is directly connected to the cavity 131 and supplies engine oil to the oil pump 150;
The engine 100, characterized in that the second passage 134 is formed in direct connection with the cavity (131) for supplying the engine oil supplied from the oil pump 150 to the oil filter (160). The method of claim 1,
The cavity (131) is an engine (100), characterized in that shielded by an oil pump cover (154) while embedding some or all of the components constituting the oil pump (150). The method of claim 1,
The cylinder block 130,
The first flow path 133 and the second flow path 134 are formed in a horizontal direction,
An oil sump connecting passage 132 connected to the first passage 133 and supplying engine oil from the oil sump 121 to the first passage 133 is formed in a vertical direction. 100. The method of claim 3,
The oil sump connecting passage 132 is formed in an intermediate region of the first cylinder 137 closest to the oil pump 150 and the second cylinder 138 adjacent to the first cylinder 137. The engine 100. The method of claim 1,
The cylinder block 130,
The engine 100, characterized in that the third flow path 135 for supplying the engine oil supplied from the oil filter 160 to the main gallery (136) is formed in the vertical direction. The method of claim 5,
The third passage 135 may include a second cylinder 138 adjacent to the first cylinder 137 closest to the oil pump 150 and a third cylinder 139 adjacent to the second cylinder 138. Engine 100, characterized in that formed in the middle region. The method of claim 1,
A relief valve 170 is provided below the oil filter 160, and when the oil pressure of the engine oil drawn into the oil filter 160 exceeds a predetermined reference value, a part or all of the engine oil is transferred to the oil pan 120. Engine 100, characterized in that for discharging.

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