Engine cylinder block with high strength and light weight

Abstract

The utility model discloses an engine cylinder block with high strength and light weight. The engine cylinder block comprises a cylinder block main body, a group of cylinder holes are formed in the cylinder body, and cylinder sleeves are arranged in the cylinder holes; a base is arranged at the bottom of the cylinder hole; a gap exists between the cylinder sleeve and the cylinder hole to form a cooling cavity; a communicating hole is formed between every two adjacent cylinder holes, and a liquid inlet hole and a liquid outlet hole which penetrate through the cylinder body are formed in the side wall of the cooling cavity. A clamping boss is arranged on the cylinder sleeve, a clamping groove is correspondingly formed in the cylinder hole, and the clamping boss is clamped in the clamping groove; the cylinder sleeve is made of cast iron, the cylinder body main body is made of cast aluminum, the cylinder body main body is cast and formed on the basis of the cylinder sleeve, and the cylinder body main body and the cylinder sleeve are of an integrated structure after being formed. According to the high-strength and light-weight engine cylinder body, the part in contact with the engine piston has high strength, so that the engine requirements of vehicle models pursuing performance can be met, and the high-strength and light-weight engine cylinder body is not easy to deform and crack during use; and the whole engine cylinder body has the advantage of light weight, and oil consumption is low when the engine cylinder body is used for automobiles.

Description

TECHNICAL FIELD

[0001] The utility model relates to an engine cylinder block, in particular to an engine cylinder block with high strength and light weight. BACKGROUND

[0002] An engine is a kind of machine that can convert other forms of energy into mechanical energy, mainly including cylinder block, cylinder head, cylinder head cover, cylinder gasket, main bearing cap and oil pan etc. The engine cylinder block is the main body of the engine, which connects each cylinder and crankcase into a whole, and is the supporting framework for installing piston, crankshaft and other parts and accessories.

[0003] The existing engine cylinder block is mostly integrally cast, which can be divided into cast iron cylinder block and cast aluminum cylinder block according to the material. The cast iron cylinder block has the advantages of high strength and good thermal stability, but the manufacturing cost is high, the weight is large, and the fuel consumption is high when used in a car. The cast aluminum cylinder block has the characteristics of light weight and good heat conduction performance, but the strength is low, especially the cylinder part in contact with the engine piston is easy to deform and crack, which is not suitable for use in performance-oriented cars. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an engine cylinder block with high strength and light weight. The part in contact with the engine piston in the engine cylinder block with high strength and light weight of the present application has high strength, which can meet the engine demand of performance-oriented car models, and is not easy to deform and crack during use. The overall mass of the engine cylinder block is small, which has the advantage of light weight, and the fuel consumption is low when used in a car.

[0005] The technical scheme of the present application is as follows:

[0006] The engine cylinder block with high strength and light weight comprises a cylinder block main body. A plurality of cylinder holes are arranged on the cylinder block main body, and a cylinder sleeve is arranged in the interior of each cylinder hole. A bottom part of each cylinder hole is provided with a base, and the inner circumferential surface of the base is in close contact with the outer circumferential surface of the lower end of the cylinder sleeve. There is a gap between the cylinder sleeve and the cylinder hole, forming a cooling cavity. A communication hole is arranged between the adjacent two cylinder holes. An inlet hole and an outlet hole are arranged on the side wall of the cooling cavity and penetrate through the cylinder block main body. A plurality of clamping bosses are arranged on the cylinder sleeve and are uniformly distributed on the outer circumferential surface of the cylinder sleeve along the circumferential direction. A clamping groove is arranged on the cylinder hole in correspondence with the clamping boss, and the clamping boss is clamped in the clamping groove. The cylinder sleeve is made of cast iron, and the cylinder block main body is made of cast aluminum. The cylinder block main body is integrally formed on the basis of the cylinder sleeve. After forming, the cylinder block main body and the cylinder sleeve form an integral structure.

[0007] Compared with the prior art, the cylinder liner in the engine cylinder body with high strength and light weight in the scheme one of the application is formed by cast iron, has the characteristics of high strength and not easy to deform and crack, and can meet the engine demand of a vehicle model pursuing performance; the cylinder body main body in the application is formed by cast aluminum on the basis of the cylinder liner, so that the overall mass of the engine cylinder body is small, has the advantage of light weight, and is used in an automobile, and the fuel consumption is low; and the cylinder liner in the application is provided with a clamping boss, so that the connection of the cylinder body main body after being formed by casting with the cylinder liner is more reliable.

[0008] As an optimization, in the aforementioned engine cylinder body with high strength and light weight, a reinforcing boss is arranged on the cylinder liner and in contact with the base, a plurality of reinforcing bosses are uniformly distributed on the outer circumferential surface of the cylinder liner in the circumferential direction, a groove is correspondingly arranged on the base, the reinforcing boss is clamped in the groove, and the end of the reinforcing boss is located in the interior of the cylinder body main body. This structure is provided with a set of reinforcing bosses on the outer circumferential surface of the cylinder liner, so that the connection of the cylinder body main body after being formed by casting with the cylinder liner is more reliable, and since the end of the reinforcing boss extends into the interior of the cylinder body main body, the reinforcing boss plays a role of radial limiting, so that the cylinder liner is not easy to separate from the cylinder body main body during use, and the reliability of the engine cylinder body is further ensured.

[0009] As an optimization, in the aforementioned engine cylinder body with high strength and light weight, the liquid inlet hole is in communication with the cylinder hole close to the front side surface of the cylinder body main body; and the liquid outlet hole is in communication with the cylinder hole close to the rear side surface of the cylinder body main body. This structure can ensure that the cooling liquid flows through each cylinder hole, so that the cooling effect is better.

[0010] As an optimization, in the aforementioned engine cylinder body with high strength and light weight, the lower end of the communication hole is higher than the upper end surface of the base. This structure makes the cooling liquid need to be filled to a certain height in the previous cylinder hole, and then overflow into the next cylinder hole, so as to further improve the cooling effect.

[0011] As an optimization, in the aforementioned engine cylinder body with high strength and light weight, the top surface of the cylinder liner is flush with the top surface of the cylinder body main body. This structure makes it unnecessary to place an additional supporting piece under the cylinder liner when the cylinder body main body is cast on the basis of the cylinder liner.

[0012] The technical scheme two of the application is:

[0013] The engine cylinder block with high strength and light weight comprises a cylinder body; a plurality of cylinder holes are arranged on the cylinder body, and a cylinder sleeve is arranged in each cylinder hole; a bottom is arranged at the bottom of each cylinder hole, and the inner circumferential surface of the bottom is in contact with the outer circumferential surface of the lower end of the cylinder sleeve; a gap is formed between the cylinder sleeve and the cylinder hole, and a cooling cavity is formed; a communication hole is arranged between two adjacent cylinder holes; a liquid inlet hole and a liquid outlet hole are arranged on the side wall of the cooling cavity and penetrate through the cylinder body; a clamping boss is arranged at the top end of the cylinder sleeve, and a plurality of clamping bosses are uniformly distributed on the outer circumferential surface of the cylinder sleeve; a clamping groove is arranged on the top surface of the cylinder hole, and the clamping boss is clamped in the clamping groove; the cylinder sleeve is made of cast iron, and the cylinder body is made of cast aluminum; a screw hole is arranged on the clamping groove, and a through hole is arranged on the clamping boss; and the cylinder sleeve is fixedly connected to the cylinder body through a screw.

[0014] Compared with the prior art, the cylinder sleeve in the engine cylinder block with high strength and light weight in the second scheme of the application is formed by cast iron, has the characteristics of high strength and is not easy to deform and crack, and can meet the engine demand of a vehicle model pursuing performance; the cylinder body in the application is formed by cast aluminum, so that the overall mass of the engine cylinder block is small, and the engine cylinder block has the advantage of light weight and is used in a vehicle to reduce fuel consumption; and the clamping boss arranged on the cylinder sleeve makes the connection between the cylinder sleeve and the cylinder body more reliable.

[0015] As an optimization, in the aforementioned engine cylinder block with high strength and light weight, an annular groove is arranged at the position where the cylinder sleeve is in contact with the bottom, and a sealing ring is arranged in the annular groove. Further, in the aforementioned engine cylinder block with high strength and light weight, a sealing pad is arranged between the clamping boss and the clamping groove. This structure makes the connection between the cylinder sleeve and the cylinder body have better sealing performance.

[0016] As an optimization, in the aforementioned engine cylinder block with high strength and light weight, the liquid inlet hole is in communication with the cylinder hole close to the front side of the cylinder body; and the liquid outlet hole is in communication with the cylinder hole close to the rear side of the cylinder body. This structure can ensure that the cooling liquid flows through each cylinder hole, so that the cooling effect is better.

[0017] As an optimization, in the aforementioned engine cylinder block with high strength and light weight, the lower end of the communication hole is higher than the upper end surface of the bottom. This structure makes the cooling liquid need to fill a certain height in the previous cylinder hole, and then overflow into the next cylinder hole, thereby further improving the cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the engine cylinder block with high strength and light weight of the first embodiment;

[0019] Figure 2 is a top view of Figure 1 ;

[0020] Figure 3 is a sectional structure schematic diagram of Figure 1 ;

[0021] Figure 4 is a structure schematic diagram of the cylinder block body in Figure 1 ;

[0022] Figure 5 is a structure schematic diagram of the cylinder liner in Figure 1 ;

[0023] Figure 6 is a structure schematic diagram of the engine cylinder block with high strength and light weight in the second embodiment;

[0024] Figure 7 is a sectional structure schematic diagram of Figure 1 ;

[0025] Figure 8 is a structure schematic diagram of the cylinder block body in Figure 1 ;

[0026] Figure 9 is a structure schematic diagram of the cylinder liner in Figure 1 ;

[0027] Figure 10 is a front sectional schematic diagram of Figure 9 .

[0028] The marks in the drawings are: 1-cylinder block body, 11-cylinder hole, 111-stopping groove, 12-base, 121-groove, 13-cooling cavity, 131-liquid inlet hole, 132-liquid outlet hole, 14-communication hole, 15-front side, 16-rear side; 2-cylinder liner, 21-stopping boss, 22-strengthening boss, 23-annular groove; 3-sealing ring; 4-sealing gasket. DETAILED DESCRIPTION

[0029] The present application will be further described below in conjunction with the drawings and embodiments, but not as the basis for limiting the present application. In the following embodiments, the contents not described in detail or not shown in detail in the drawings are all the technical common sense in the art.

[0030] Embodiment one (see Figures 1 to 5 ):

[0031] The engine cylinder block with high strength and light weight comprises a cylinder body 1, a plurality of cylinder holes 11 are arranged on the cylinder body 1, and a cylinder sleeve 2 is arranged in the cylinder hole 11; a bottom 12 is arranged at the bottom of the cylinder hole 11, the inner circumferential surface of the bottom 12 is in abutment with the outer circumferential surface of the lower end of the cylinder sleeve 2; a gap is formed between the cylinder sleeve 2 and the cylinder hole 11, and a cooling cavity 13 is formed; a communication hole 14 is arranged between the two adjacent cylinder holes 11, the side wall of the cooling cavity 13 is provided with an inlet hole 131 and an outlet hole 132 penetrating through the cylinder body 1; a clamping boss 21 is arranged on the cylinder sleeve 2, a plurality of clamping bosses 21 are uniformly distributed on the outer circumferential surface of the cylinder sleeve 2, a clamping groove 111 is arranged on the cylinder hole 11 in correspondence, and the clamping boss 21 is clamped in the clamping groove 111; the cylinder sleeve 2 is cast iron, the cylinder body 1 is cast aluminum, and the cylinder body 1 is formed by casting on the basis of the cylinder sleeve 2; after forming, the cylinder body 1 and the cylinder sleeve 2 are integrated.

[0032] In the embodiment, a reinforcing boss 22 is arranged on the cylinder sleeve 2 and in contact with the bottom 12, a plurality of reinforcing bosses 21 are uniformly distributed on the outer circumferential surface of the cylinder sleeve 2, a groove 121 is arranged on the bottom 12 in correspondence, the reinforcing boss 22 is clamped in the groove 121, and the end of the reinforcing boss 22 is located in the interior of the cylinder body 1. This structure is provided with a group of reinforcing bosses 21 on the outer circumferential surface of the cylinder sleeve 2, so that the connection between the cylinder body 1 and the cylinder sleeve 1 is more reliable after casting, and because the end of the reinforcing boss 22 extends into the interior of the cylinder body 1, the reinforcing boss 22 plays a role in radial limiting, so that the cylinder sleeve 2 is not easy to separate from the cylinder body 1 during use, thereby ensuring the reliability of the engine cylinder block.

[0033] In the embodiment, the inlet hole 131 is in communication with the cylinder hole 11 close to the front side 15 of the cylinder body 1, and the outlet hole 132 is in communication with the cylinder hole 11 close to the rear side 16 of the cylinder body 1. This structure can ensure that the cooling liquid flows through each cylinder hole, so that the cooling effect is better.

[0034] In the embodiment, the lower end of the communication hole 14 is higher than the upper end surface of the bottom 12. This structure makes the cooling liquid need to fill a certain height in the previous cylinder hole 11, and then overflow into the next cylinder hole 11, thereby further improving the cooling effect.

[0035] In the embodiment, the top surface of the cylinder sleeve 2 is flush with the top surface of the cylinder body 1. This structure makes it unnecessary to place an additional supporting member under the cylinder sleeve 2 when the cylinder body 1 is cast on the basis of the cylinder sleeve 2.

[0036] In the manufacturing of the engine cylinder block with high strength and light weight of the embodiment, the cylinder liner 2 is first cast into shape using a mold; then the cylinder liner 2 is placed in another mold, and the cylinder body 1 is cast into shape based on the cylinder liner 2, so that the cylinder body 1 and the cylinder liner 2 form an integrated structure.

[0037] Embodiment Two (see Figures 6 to 10 ):

[0038] Different from the casting of the cylinder body 1 based on the cylinder liner 2 in the embodiment one, in the embodiment, a screw hole is arranged on the locking groove 111, a through hole is arranged on the locking boss 21, and the cylinder liner 2 is fixedly connected with the cylinder body 1 through a screw.

[0039] In the embodiment, an annular groove 23 is arranged on the cylinder liner 2 at the position where the cylinder liner 2 contacts with the base 12, a sealing ring 3 is arranged on the annular groove 23, and a sealing gasket 4 is arranged between the locking boss 21 and the locking groove 111. This structure makes the connection between the cylinder liner 2 and the cylinder body 1 have better sealing performance.

[0040] In the manufacturing of the engine cylinder block with high strength and light weight of the embodiment, the cylinder liner 2 is first cast into shape using a mold, the cylinder body 1 is cast into shape using another mold, and then the cylinder body 1 and the cylinder liner 2 are fixedly connected through a screw.

[0041] The general description of the utility model involved in the present application and the description of the specific embodiments should not be understood as a limitation on the technical solutions of the utility model. Based on the disclosure of the present application, the skilled in the art can add, reduce or combine the disclosed technical features in the general description or / and the specific embodiments (including the embodiments) without violating the elements of the utility model involved, to form other technical solutions within the protection scope of the present application.

Claims

1. An engine block having high strength and light weight, comprising a block main body (1); characterized by: The cylinder body (1) is provided with a group of cylinder holes (11), the inside of the cylinder hole (11) is provided with a cylinder sleeve (2), the bottom of the cylinder hole (11) is provided with a base (12), the inner circumferential surface of the base (12) is attached to the outer circumferential surface of the lower end of the cylinder sleeve (2), there is a gap between the cylinder sleeve (2) and the cylinder hole (11), forming a cooling cavity (13), the adjacent two cylinder holes (11) are provided with a communication hole (14), the side wall of the cooling cavity (13) is provided with a liquid inlet hole (131) and a liquid outlet hole (132) penetrating through the cylinder body (1), the cylinder sleeve (2) is provided with a clamping boss (21), the clamping boss (21) is multiple, evenly distributed on the outer circumferential surface of the cylinder sleeve (2) along the circumference, the cylinder hole (11) is provided with a clamping groove (111) correspondingly, the clamping boss (21) is clamped in the clamping groove (111), the cylinder sleeve (2) is cast iron, the cylinder body (1) is cast aluminum, the cylinder body (1) is formed on the basis of the cylinder sleeve (2), after forming, the cylinder body (1) and the cylinder sleeve (2) are integrated.

2. The engine block having high strength and light weight according to claim 1, characterized by: The cylinder sleeve (2) is provided with a reinforcing boss (22) at the contact with the base (12), the reinforcing boss (22) is multiple, evenly distributed on the outer circumferential surface of the cylinder sleeve (2) along the circumference, the base (12) is provided with a groove (121) correspondingly, the reinforcing boss (22) is clamped in the groove (121), and the end of the reinforcing boss (22) is located in the inside of the cylinder body (1).

3. The engine block having high strength and light weight according to claim 2, characterized in that: The liquid inlet hole (131) is communicated with the cylinder hole (11) close to the front side (15) of the cylinder body (1); the liquid outlet hole (132) is communicated with the cylinder hole (11) close to the rear side (16) of the cylinder body (1).

4. The engine block having high strength and light weight according to claim 3, characterized in that: The lower end of the communication hole (14) is higher than the upper end surface of the base (12).

5. The engine block having high strength and light weight according to any one of claims 1 to 4, characterized by: The top surface of the cylinder sleeve (2) is flush with the top surface of the cylinder body (1).

6. An engine block having high strength and light weight, comprising a block main body (1); characterized by: The cylinder body (1) is provided with a group of cylinder holes (11), the inside of the cylinder hole (11) is provided with a cylinder sleeve (2), the bottom of the cylinder hole (11) is provided with a base (12), the inner circumferential surface of the base (12) is attached to the outer circumferential surface of the lower end of the cylinder sleeve (2), there is a gap between the cylinder sleeve (2) and the cylinder hole (11), forming a cooling cavity (13), the adjacent two cylinder holes (11) are provided with a communication hole (14), the side wall of the cooling cavity (13) is provided with a liquid inlet hole (131) and a liquid outlet hole (132) penetrating through the cylinder body (1), the top end of the cylinder sleeve (2) is provided with a clamping boss (21), the clamping boss (21) is multiple, evenly distributed on the outer circumferential surface of the cylinder sleeve (2) along the circumference, the top surface of the cylinder hole (11) is provided with a clamping groove (111) correspondingly, the clamping boss (21) is clamped in the clamping groove (111), the cylinder sleeve (2) is cast iron, the cylinder body (1) is cast aluminum, the clamping groove (111) is provided with a screw hole, the clamping boss (21) is provided with a through hole, the cylinder sleeve (2) is fixedly connected with the cylinder body (1) through a screw.

7. The engine block having high strength and light weight according to claim 6, characterized in that: An annular groove (23) is arranged on the cylinder liner (2) in contact with the base (12), and a sealing ring (3) is arranged on the annular groove (23).

8. The engine block having high strength and light weight according to claim 7, characterized by: A sealing gasket (4) is arranged between the clamping boss (21) and the clamping groove (111).

9. The engine block with high strength and light weight according to claim 8, characterized by: The liquid inlet hole (131) is in communication with the cylinder hole (11) close to the front side (15) of the cylinder body (1); and the liquid outlet hole (132) is in communication with the cylinder hole (11) close to the rear side (16) of the cylinder body (1).

10. The high-strength lightweight engine block according to any one of claims 6 to 9, characterized by: The lower end of the communication hole (14) is higher than the upper end surface of the base (12).

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