V-engine cylinder block

Abstract

The application discloses a V-shaped engine cylinder block, which comprises a V-shaped part formed by two groups of cylinders arranged at a V-shaped included angle and a crankcase at the lower part of the V-shaped part, the two groups of cylinders are located at two side parts of the V-shaped part, and the top surfaces of the two side parts are mounting surfaces of cylinder heads; a main oil passage is arranged at the connecting part of the V-shaped part and the crankcase, the V-shaped part is further provided with a water inlet main pipe, a left water return pipe and a right water return pipe, the water inlet main pipe is arranged at the middle position of the V-shaped part and is located above the main oil passage, the left water return pipe is arranged above the left side of the V-shaped part, and the right water return pipe is arranged above the right side of the V-shaped part. The application has the advantages of compact space layout, good cooling effect of the whole machine and the like.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and in particular to V-shaped engine cylinder blocks. Background Technology

[0002] Currently, traditional V-type engine cylinders are divided into two groups, with adjacent cylinders arranged at a certain angle, forming a plane with an angle between the two groups of cylinders. When viewed from the side, the cylinders are distributed in a V-shape. The V-type cylinder block generally consists of an upper V-shaped section and a lower crankcase. Two camshaft holes are provided on the outer or inner side of the V-shaped section, and the main lubrication oil passage is provided at the connection between the V-shaped section and the crankcase.

[0003] Existing patent document CN209145721U discloses a cylinder block for a V-type engine, in which the main lubrication oil passage is cast together with the cylinder block blank by inserting a steel pipe, which not only ensures the cleanliness of the main oil passage but also saves processing costs. Cooling water pipes are arranged in the middle of the V-angle of the V-type cylinder block, effectively utilizing the space of the V-angle, resulting in a compact structure, reasonable layout, and good appearance. Reinforcing ribs are arranged in the middle of the V-angle, significantly improving the strength and NVH performance of the cylinder block.

[0004] The above background information is provided only to aid in understanding the concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0005] The main objective of this invention is to propose a compact V-shaped engine cylinder block with good cooling performance.

[0006] Therefore, the present invention proposes a V-shaped engine cylinder block.

[0007] Preferably, the present invention may also have the following technical features:

[0008] A V-shaped engine cylinder block includes a V-shaped section consisting of two sets of cylinders arranged at a V-angle and a crankcase at the lower part of the V-shaped section. The two sets of cylinders are located on two sides of the V-shaped section, and the top surfaces of the two sides are mounting surfaces for the cylinder head. A main oil passage is provided at the connection between the V-shaped section and the crankcase. The V-shaped section is also provided with a main water inlet pipe, a left return water pipe, and a right return water pipe. The main water inlet pipe is located in the middle of the V-shaped section and above the main oil passage. The left return water pipe is located on the upper left side of the V-shaped section, and the right return water pipe is located on the upper right side of the V-shaped section.

[0009] Furthermore, the main oil passage is machined by a machining center, and the machining process includes drilling and boring.

[0010] Furthermore, the main water inlet pipe, the left return water pipe, and the right return water pipe are integrally cast with the cylinder block.

[0011] Furthermore, the main water inlet pipe is located directly above the main oil passage.

[0012] Furthermore, it also includes a weight reduction hole, which is located above the main water inlet pipe and between the left return water pipe and the right return water pipe.

[0013] Furthermore, it also includes process sand cleaning holes, with two process sand cleaning holes located on both sides of the main water inlet pipe.

[0014] The beneficial effects of this invention compared to existing technologies include: arranging the main inlet pipe, left return pipe, and right return pipe within the V-shaped section improves overall reliability. During the diesel engine conceptual design phase, from the perspective of reducing component development, unnecessary components can be omitted or an integrated design concept can be used, reducing the number of components while also achieving cost reduction. Furthermore, the V-shaped section provides ample space, allowing for full utilization of space, simplified appearance, and a compact overall structure; the integrated design also improves coolant sealing and increases reliability; and arranging water channels within the V-angle also achieves overall weight reduction. Attached Figure Description

[0015] Figure 1 This is a side view of the present invention.

[0016] Figure 2 This is a perspective view of the present invention.

[0017] Figure 3 This is a waterway layout diagram of the present invention. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope or application of the present invention.

[0019] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0020] like Figure 1-3The V-shaped engine cylinder block shown includes a V-shaped section consisting of two sets of cylinders 3 arranged at a V-angle, and a crankcase 1 at the lower part of the V-shaped section 2. The two sets of cylinders 3 are located on two sides of the V-shaped section 2, and the top surfaces of the two sides are mounting surfaces for the cylinder head. A main oil passage 8 is provided at the connection between the V-shaped section 2 and the crankcase 1. The V-shaped section 2 also has a main water inlet pipe 6, a left return water pipe 5, and a right return water pipe 9. The main water inlet pipe 6 is located in the middle of the V-shaped section 2 and above the main oil passage 8. The left return water pipe 5 is located on the upper left of the V-shaped section 2, and the right return water pipe 9 is located on the upper right of the V-shaped section 2. In this embodiment, the main water inlet pipe 6, the left return water pipe 5, and the right return water pipe 9 are arranged in the V-shaped section 2 to improve overall reliability. In the diesel engine design stage, from the perspective of reducing component development, unnecessary components can be avoided or an integrated design concept can be used to reduce the number of components, while also taking into account the purpose of cost reduction. Furthermore, the V-shaped section 2 has ample space, allowing for full utilization of space, a simplified appearance, and a compact overall structure. The integrated design also improves coolant sealing and increases reliability. The arrangement of water channels within the V-shaped section 2 also contributes to overall weight reduction. The coolant flowing back and forth in the main inlet pipe 6, left return pipe 5, and right return pipe 9 cools the cylinder block, helping to lower cylinder block temperature and addressing the problem of insufficient cooling in large-displacement engine cylinder blocks. Preferably, the main oil passage 8 is obtained through machining. For example, the cast cylinder block is fixed in a machining center and drilled and bored to create the main oil passage 8, ensuring its cleanliness and surface roughness.

[0021] Preferably, the main water inlet pipe 6 is located directly above the main oil passage 8, and the cross-section formed by their central axes coincides with the cross-section of the cylinder block's central axis. Both the main oil passage 8 and the main water inlet pipe 6 are arranged in the V-shaped section 2 and are designed as an upper and lower structure. The adjacent design of the main oil passage 8 and the main water inlet pipe 6 also improves the overall cooling performance of the engine. During operation, especially at high temperatures, the main water inlet pipe 6 can utilize its proximity to the main oil passage 8 within the cylinder block to cool the oil in the main oil passage 8, further improving oil cooling efficiency.

[0022] It also includes a weight reduction hole 4, which is located above the main water inlet pipe 6 and between the left return water pipe 5 and the right return water pipe 9. By designing the weight reduction hole 4, the material used is reduced, and the weight of the cylinder block is also reduced.

[0023] It also includes process sand cleaning holes 7, with two process sand cleaning holes 7 located on both sides of the main water inlet pipe 6. Preferably, the main water inlet pipe 6, the left return water pipe 5, the right return water pipe 9, the weight reduction hole 4, the process sand cleaning holes 7, and the cylinder block are integrally cast.

[0024] Cooling cycle sequence of cylinder block: coolant enters the main water inlet pipe 6, the main water inlet pipe 6 is provided with an upper water passage 10 that connects to the cylinder head water jacket, the cylinder head water jacket is connected to the cylinder block water jacket through the lower water hole, and the two side cylinder block water jackets are connected to the left return water pipe 5 and the right return water pipe 9 respectively through the water guide hole 11.

[0025] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0026] Although exemplary embodiments of the invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the invention without departing from the central concepts of the invention described herein. Therefore, the invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the invention.

Claims

1. A V-shaped engine cylinder block, comprising a V-shaped section consisting of two sets of cylinders arranged at a V-angle and a crankcase at the lower part of the V-shaped section, wherein the two sets of cylinders are located on two sides of the V-shaped section, and the top surfaces of the two sides are mounting surfaces for the cylinder head; a main oil passage is provided at the connection between the V-shaped section and the crankcase, characterized in that: The V-shaped section is also provided with a main water inlet pipe, a left return water pipe and a right return water pipe. The main water inlet pipe is located in the middle of the V-shaped section and above the main oil passage. The left return water pipe is located in the upper left of the V-shaped section and the right return water pipe is located in the upper right of the V-shaped section.

2. The V-shaped engine cylinder block as described in claim 1, characterized in that: The main oil passage is machined by a machining center, and the machining process includes drilling and boring.

3. The V-shaped engine cylinder block as described in claim 1, characterized in that: The main water inlet pipe, left return water pipe, and right return water pipe are integrally cast with the cylinder block.

4. The V-shaped engine cylinder block as described in claim 1, characterized in that: The main water inlet pipe is located directly above the main oil passage.

5. The V-shaped engine cylinder block as described in claim 1, characterized in that: It also includes a weight reduction hole, which is located above the main water inlet pipe and between the left return water pipe and the right return water pipe.

6. The V-shaped engine cylinder block as described in claim 1, characterized in that: It also includes process sand cleaning holes, with two process sand cleaning holes located on both sides of the main water inlet pipe.

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