Engine with cylinder head gasket with degassing holes

Abstract

The utility model discloses an engine of a cylinder cover gasket with a degassing hole, which comprises a cylinder cover, a cylinder body and a cylinder gasket, and the cylinder gasket is arranged between the cylinder cover and the cylinder body. The cylinder cover is provided with a water jacket, the cylinder body is provided with a cylinder body water jacket and a plurality of cylinder holes, and at least two water feeding holes communicated with the cylinder cover water jacket are formed in the periphery of each cylinder hole. The upper ends of part of the water feeding holes a are blocked by the cylinder gasket, and the remaining water feeding holes b are communicated with the cylinder cover water jacket through the penetrating holes of the cylinder gasket. And a cylinder gasket air removing hole is formed in the position, corresponding to the water feeding hole a, of the cylinder gasket. The utility model has the advantages of simple structure, strong adaptability, and the like, and is beneficial to exhaust of the water jacket of the cylinder body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, in particular to a kind of engine of cylinder cover gasket with degassing hole. BACKGROUND

[0002] Cylinder cover gasket is located between cylinder cover and cylinder body, connect cylinder cover and cylinder body together, and the medium sealed is gas, cooling water and lubricating oil. Among them, the water hole is set up in the top surface of cylinder body and the bottom surface of cylinder cover, for cooling water transmission and sand removal during casting. Correspondingly, the water hole is also set up in the corresponding position of cylinder cover gasket, for the transmission of cooling water, and the size of water hole can adjust the transmission speed and output of cooling water, so as to improve the cooling effect of cylinder cover and cylinder body. In order to throttle, part of water hole needs to be completely blocked, that is, blind hole is formed in the top of cylinder body, but after complete blocking, "steam bag" will be formed below the blind hole of cylinder body, which will cause the local temperature of cylinder body to be too high and deform.

[0003] The existing patent document CN213235260U discloses a cylinder cover gasket with multi-layer metal composite structure, which discloses a structure of three-layer cylinder gasket staggered opening hole to form exhaust hole. It does not involve how to solve the exhaust problem after blocking part of the upper water hole.

[0004] The disclosure of the above background art content is only used to assist in understanding the concept and technical solution of the utility model, and it does not necessarily belong to the prior art of the present patent application. In the absence of explicit evidence that the above content has been disclosed on the filing date of the present patent application, the above background art should not be used to evaluate the novelty and inventiveness of the present application. UTILITY MODEL CONTENT

[0005] The utility model mainly aims at providing an engine with cylinder cover gasket with degassing hole, which has simple structure, strong adaptability and is beneficial to the exhaust of cylinder body water jacket.

[0006] Therefore, the utility model provides an engine with cylinder cover gasket with degassing hole.

[0007] Preferably, the utility model can also have the following technical features:

[0008] An engine with cylinder cover gasket with degassing hole, comprising a cylinder cover, a cylinder body and a cylinder gasket, the cylinder gasket is installed between the cylinder cover and the cylinder body; the cylinder cover is provided with a water jacket, the cylinder body is provided with a cylinder body water jacket and a plurality of cylinder holes, at least 2 upper water holes communicating with the cylinder cover water jacket are provided around each cylinder hole; the upper end of part of the upper water holes a is blocked by the cylinder gasket, the remaining upper water holes b communicate with the cylinder cover water jacket through the perforation of the cylinder gasket; the cylinder gasket is provided with a cylinder gasket degassing hole corresponding to the position of the upper water hole a.

[0009] Further, each cylinder bore retains 1 upper water hole b connected to the cylinder head water jacket, and the rest of the upper water hole a is blocked by the cylinder gasket.

[0010] Further, the axis of the cylinder gasket degassing hole corresponds to the center of the upper water hole a upper end surface.

[0011] Further, the diameter of the cylinder gasket degassing hole is 2.5-3.5mm.

[0012] Further, the diameter of the cylinder gasket degassing hole is 3mm.

[0013] Further, the upper water hole b around each cylinder bore is located on the same side.

[0014] Further, the cylinder head water jacket is a double-layer water jacket, and the cylinder head water jacket is divided into an upper layer water jacket and a lower layer water jacket by a partition plate, a plurality of partition plate degassing holes are formed on the partition plate and correspond to the positions of the upper water holes.

[0015] Further, the upper water hole of each cylinder bore corresponds to 2 partition plate degassing holes.

[0016] Further, the 2 partition plate degassing holes are respectively arranged on the intake side and the exhaust side of the cylinder head.

[0017] Further, the diameter of the partition plate degassing hole is greater than the diameter of the cylinder gasket degassing hole.

[0018] The beneficial effects of the present application compared with the prior art include: only 1 upper water hole b is retained to communicate with the cylinder head water jacket 13, when the cooling water of the cylinder head water jacket 13 enters the cylinder body water jacket 33, the water jacket cooling water outside the same cylinder bore 32 can be avoided to form a collision, and 1 upper water hole b is more conducive to the flow of the water jacket cooling water outside the cylinder bore. Through the partition plate degassing hole BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the top view of the cylinder gasket of the present application.

[0020] Figure 2 is the top view of the cylinder body of the present application.

[0021] Figure 3 is the partial transverse sectional view of the cylinder head of the present application.

[0022] Figure 4 is the partial sectional view of the present application. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present application and its applications.

[0024] 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.

[0025] like Figures 1-4 An engine with a cylinder head gasket with a venting hole is shown, comprising a cylinder head 1, a cylinder block 3, and a cylinder head gasket 2, wherein the cylinder head gasket 2 is installed between the cylinder head 1 and the cylinder block 3. The cylinder head 1 has a water jacket 13, and the cylinder block 3 has a crankcase oil-gas passage 31, a cylinder block water jacket 33, and several cylinder bores 32. Each cylinder bore 32 has at least two water inlet holes 31 around its perimeter, which connect the cylinder block water jacket 33 and the cylinder head water jacket 13, allowing cooling water from the cylinder head water jacket 13 to flow into the cylinder block water jacket 33 through the water inlet holes 31. Correspondingly, the cylinder head gasket 2 has through holes 24 corresponding to the positions of the water inlet holes 31. In some cases, to conserve airflow, it is necessary to block the connection between some of the water inlet holes 31 and the cylinder head water jacket 13. Therefore, using the cylinder head gasket 2 to seal the unused water inlet holes a312 is a more economical solution. Only the structure of the cylinder head gasket 2 needs to be adjusted, i.e., sealing the position 23 of the cylinder head gasket corresponding to water inlet hole a, thus blocking the connection between water inlet hole a and the cylinder head water jacket 13. However, after the cylinder head gasket 2 seals water inlet hole a, water inlet hole a312 becomes a blind hole, forming a "gas pocket," causing localized overheating and deformation of the cylinder block 3. As an improvement, a cylinder head gasket vent hole 22 is opened at the position 23 of the cylinder head gasket corresponding to water inlet hole a312, introducing the gas from water inlet hole a312 into the cylinder head water jacket 13. Furthermore, each cylinder hole 32 retains one water inlet hole b311 connected to the cylinder head water jacket 13, while the remaining water inlet holes a312 are sealed with a cylinder head gasket. For example, each cylinder bore 32 has four water inlet holes 31 around its perimeter, one of which, b311, communicates with the cylinder head water jacket 13, while the other three water inlet holes a312 are sealed with cylinder head gaskets 2. Preferably, the axis of the cylinder head gasket vent hole 22 corresponds to or is close to the center of the upper end face of the water inlet hole a312. In this embodiment, only one water inlet hole b is left to communicate with the cylinder head water jacket 13. When the cooling water from the cylinder head water jacket 13 enters the cylinder block water jacket 33, it can prevent the cooling water in the water jacket outside the same cylinder bore 32 from flowing against each other. One water inlet hole b is more conducive to the flow of cooling water in the water jacket outside the cylinder bore. The water inlet holes 31 include at least one water inlet hole a312 and at least one water inlet hole b311.

[0026] Furthermore, the diameter of the cylinder head gasket vent hole 22 is 2.5-3.5 mm, preferably 3 mm.

[0027] In the above, the water inlet holes b around each cylinder bore 32 are located on the same side, such as each water inlet hole b being uniformly located near the exhaust side or intake side of the cylinder block.

[0028] Combination Figure 4The cylinder head water jacket 13 is a double-layer water jacket, divided into an upper water jacket 15 and a lower water jacket 16 by a partition 11, which is a common double-layer cylinder head water jacket structure. During operation, cooling water enters from the upper water jacket 15, flows through the water inlet to the lower water jacket 16, and then enters the cylinder block water jacket 33 through the water inlet b311 of the cylinder block 3. To improve the removal of gas entering the cylinder head water jacket 13 through the cylinder head gasket venting hole 22, a partition venting hole 12 is provided on the partition 11 to accelerate the entry of air from the lower water jacket 16 into the upper water jacket 15, and then discharges from the cylinder head through the cylinder head venting structure. The cylinder head venting structure is an existing structure; generally, cylinder heads need to be equipped with a venting structure to discharge gas from inside the cylinder head water jacket, such as a venting manifold.

[0029] To improve exhaust efficiency, the cylinder head gasket venting holes 22 and water inlet holes 31 are positioned correspondingly. Each cylinder bore 32 has two baffle venting holes 12 around its surrounding water inlet holes 31, located on the intake and exhaust sides near the cylinder head 1, respectively. Taking a six-cylinder engine as an example, each cylinder bore 32 has four water inlet holes 31 around its surroundings, including one water inlet hole b311 and three water inlet holes a312. Two water inlet holes 31 are located on the intake and two on the exhaust sides of the cylinder block 3. Furthermore, one baffle venting hole 12 is located at the position of the baffle 11. That is, the baffle venting hole 12 is located directly above the cylinder head gasket venting hole 22. Preferably, the diameter of the baffle venting hole 12 is larger than the diameter of the cylinder head gasket venting hole 22.

[0030] The cylinder block 3 is also provided with several bolt holes 34. One bolt hole is located at each of the four corners of the cylinder block 3, and one bolt hole 34 is located between two adjacent water inlet holes 31 on the same side of the cylinder block 3. The reasonable arrangement of the bolt holes 34 ensures a tight connection of the cylinder head 1. Correspondingly, the cylinder head gasket 2 has mounting holes 25 corresponding to the positions of the bolt holes 34. The cylinder head gasket 2 also has through holes 21 corresponding to the positions of the crankcase oil-gas passage 35.

[0031] 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.

[0032] Although exemplary embodiments of the present 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 present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. An engine with a cylinder head gasket with gas venting holes, comprising a cylinder head, a cylinder block and a cylinder gasket, the cylinder gasket being installed between the cylinder head and the cylinder block; the cylinder head is provided with a water jacket, the cylinder block is provided with a cylinder block water jacket and a plurality of cylinder holes, and each of the cylinder holes is provided with at least two upper water holes communicating with the cylinder head water jacket; characterized in that: Part of the upper end of the water hole a is blocked by the gasket, and the rest of the water hole b is communicated with the cylinder head water jacket through the gasket hole.

2. The engine of claim 1, wherein: Each cylinder hole retains a water hole b communicated with the cylinder head water jacket, and the rest of the water hole a is blocked by the gasket.

3. The engine of claim 1, wherein: The axis of the gasket hole corresponds to the center of the upper end surface of the water hole a.

4. The engine of claim 1, wherein: The diameter of the gasket hole is 2.5-3.5mm.

5. The engine of claim 1, wherein: The diameter of the gasket hole is 3mm.

6. The engine of claim 1, wherein: The water hole b around each cylinder hole is located on the same side.

7. The engine of claim 1, wherein: The cylinder head water jacket is a double-layer water jacket, which is divided into an upper layer and a lower layer by a partition plate, and a plurality of partition plate holes are formed on the partition plate to communicate the upper layer and the lower layer, and the positions of the partition plate holes correspond to the positions of the water holes.

8. The engine of claim 7, wherein: Each cylinder hole has two partition plate holes corresponding to the water hole.

9. The engine of claim 8, wherein: The two partition plate holes are respectively arranged on the intake side and the exhaust side of the cylinder head.

10. The engine of claim 7, wherein: The diameter of the partition plate hole is larger than that of the gasket hole.

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