Engine and vehicle

Abstract

An engine and a vehicle. The engine comprises: a cylinder head (100), which is provided with a mounting hole (101) and a ventilation channel (102), wherein the ventilation channel (102) is in communication with the mounting hole (101), the ventilation channel (102) is in communication with the exterior of the cylinder head (100), the ventilation channel (102) has at least two extension directions, and the at least two extension directions of the ventilation channel (102) are arranged at an included angle; and a spark plug assembly (110), which is inserted through the mounting hole (101) in a height direction (H), and comprises a first sealing member (111) and a second sealing member (112), wherein the first sealing member (111) is connected to the outside of the mounting hole (101), the second sealing member is connected to the inside of the mounting hole (101), and the first sealing member (111) and the second sealing member (112) are spaced apart in the height direction (H) and uniformly distributed above the ventilation channel (102). The engine has good waterproof performance and a low failure rate.

Description

Engine and vehicle

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 2024108402054, filed on June 25, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates generally to the technical field of automobile engines, and more particularly to an engine and a vehicle. BACKGROUND

[0004] At present, the cylinder head of an engine is provided with a vent hole for discharging exhaust gas at the joint of the cylinder head and the spark plug to avoid oil and gas accumulation. However, due to the provision of the vent hole, external accumulated water is easy to enter the engine, which may cause engine failure.

[0005] SUMMARY

[0006] In this section, a series of concepts in simplified form are introduced, which will be further described in detail in the specific embodiment section. This section does not mean to try to limit the key features and essential technical features of the claimed technical solution, nor to try to determine the protection scope of the claimed technical solution.

[0007] To at least partially solve the above problems, the present application provides an engine, comprising:

[0008] a cylinder head provided with a mounting hole and a vent passage, the vent passage being in communication with the mounting hole, the vent passage being in communication with the outside of the cylinder head, and the vent passage having at least two extension directions, the at least two extension directions of the vent passage being arranged at an included angle; and

[0009] a spark plug assembly penetrating the mounting hole along a height direction, the spark plug assembly comprising a first sealing member connected outside the mounting hole and a second sealing member connected inside the mounting hole, the first sealing member and the second sealing member being spaced apart along the height direction and being arranged above the vent passage.

[0010] According to the engine provided in the present application, the first sealing member and the second sealing member of the spark plug assembly are connected to the cylinder head, so that the spark plug assembly and the cylinder head have a double sealing connection effect, preventing external accumulated water from entering the mounting hole. In addition, the ventilation channel has at least two extension directions and is arranged at an included angle, so that the external accumulated water is not easy to enter the mounting hole through the ventilation channel. Furthermore, the ventilation channel is located below the first sealing member and the second sealing member, so that the ventilation channel is not easy to enter the accumulated water. Therefore, the engine according to the present application has good waterproof performance and reduces the failure rate of the engine.

[0011] In some embodiments, the ventilation channel is provided with an opening on the outer side of the cylinder head, and the diameter of the opening is not greater than 6 mm.

[0012] In some embodiments, the opening is arranged at the bottom of the cylinder head.

[0013] In some embodiments, the ventilation channel comprises a first cavity and a second cavity, the first cavity extends along a first horizontal direction perpendicular to the height direction and communicates with the mounting hole, and the second cavity is connected with the first cavity and extends along a second horizontal direction perpendicular to the height direction.

[0014] In some embodiments, the ventilation channel further comprises a third cavity, the third cavity extends along the height direction and communicates with the second cavity, and the third cavity communicates with the outside of the cylinder head.

[0015] In some embodiments, the cylinder head is provided with a protruding portion, the mounting hole communicates with the protruding portion, and the spark plug assembly comprises:

[0016] a mounting block, the mounting hole is connected with the cylinder head;

[0017] a cover, the cover is connected to the mounting hole and sleeved to the protruding portion; and

[0018] a sleeve rod, the sleeve rod is connected to the cover and penetrates the protruding portion and the mounting hole.

[0019] In some embodiments, the first sealing member is arranged in the cover and abuts to the protruding portion.

[0020] In some embodiments, the second sealing member is arranged in the sleeve rod and abuts to the inner wall of the mounting hole.

[0021] In some embodiments, the interference amount between the first sealing member and the protruding portion is 1.5 mm to 2.5 mm.

[0022] In some embodiments, the interference between the second sealing member and the inner wall of the mounting hole is 1.5-2.5 mm.

[0023] In some embodiments, the mounting block is provided with at least two mounting ears, which are evenly arranged around the mounting hole, and the engine further comprises a fastener penetrating the mounting ears and connected with the cylinder head.

[0024] In some embodiments, the sleeve rod is provided with a tapered surface portion, which cooperates with the inner wall of the mounting hole.

[0025] The present application provides a vehicle comprising the engine according to the above embodiments.

[0026] According to the vehicle provided by the present application, the engine has good waterproof performance and low failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0027] The following drawings of the embodiments of the present application are hereby incorporated into the present application as a part of the present application for the purpose of understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application. In the drawings,

[0028] Fig. 1 is a perspective view of a cylinder head of an engine provided in some embodiments of the present application;

[0029] Fig. 2 is a view in the direction of line A in Fig. 1;

[0030] Fig. 3 is a sectional view taken along line B-B in Fig. 2;

[0031] Fig. 4 is a partial sectional view taken along line C-C in Fig. 1; and

[0032] Fig. 5 is a partial sectional view taken along line D-D in Fig. 1.

[0033] Reference signs: 1000, engine; 100, cylinder head; 101, mounting hole; 102, air passage; 103, opening; 104, first cavity; 105, second cavity; 106, third cavity; 107, protrusion; 110, spark plug assembly; 111, first sealing member; 112, second sealing member; 113, mounting block; 114, cover; 115, sleeve rod; 116, mounting ear; 120, fastener; H, height direction; D1, first horizontal direction; D2, second horizontal direction. DETAILED DESCRIPTION

[0034] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail to avoid obscuring aspects of the present application.

[0035] In this document, ordinal numbers such as "first" and "second" are used merely to identify and do not imply any specific order or precedence of the elements. Also, the use of the term "first" does not imply the existence of a "second" element, and the use of the term "second" does not imply the existence of a "first" element.

[0036] In this document, "upper", "lower", "front", "back", "left", "right", and the like are used to denote relative positions among the relevant parts, and do not limit the absolute positions of the relevant parts.

[0037] In this document, "equal", "same", and the like are not limited in the strict mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and allowed in manufacturing or use.

[0038] Unless otherwise indicated, numerical ranges in this document are inclusive of the entire range and also of several sub-ranges within the entire range.

[0039] Figs. 1 to 5 show an engine 1000 according to an embodiment of the present application, which includes a cylinder head 100 and a spark plug assembly 110. The cylinder head 100 is provided with a mounting hole 101 and a vent passage 102, which communicates with the mounting hole 101 and is open to the outside of the cylinder head 100. The vent passage 102 has at least two extension directions, which are arranged at an angle. The spark plug assembly 110 is inserted into the mounting hole 101 along a height direction H, and includes a first sealing member 111 and a second sealing member 112. The first sealing member 111 is connected outside the mounting hole 101, and the second sealing member is connected inside the mounting hole 101. The first and second sealing members 111 and 112 are spaced apart along the height direction H and arranged above the vent passage 102.

[0040] According to the engine 1000 of the embodiment of the present application, the first sealing member 111 and the second sealing member 112 of the spark plug assembly 110 are connected to the cylinder head 100, so that the spark plug assembly 110 and the cylinder head 100 have a double sealing connection effect, preventing external accumulated water from entering the mounting hole 101. In addition, the ventilation passage 102 has at least two extension directions and is arranged at an angle, so that the external accumulated water is not easy to enter the mounting hole 101 through the ventilation passage 102. In addition, the ventilation passage 102 is located below the first sealing member 111 and the second sealing member 112, so that the ventilation passage 102 is not easy to enter the accumulated water. Therefore, the engine 1000 of the embodiment of the present application has good waterproof performance, and the failure rate of the engine 1000 is reduced.

[0041] The engine 1000 further comprises a cylinder body. Referring to FIGS. 2 and 4, the mounting hole 101 of the cylinder head 100 and the internal space of the cylinder body form a combustion chamber, and the spark plug assembly 110 is arranged in the mounting hole 101, so that the mixture in the combustion chamber can be ignited, thereby igniting the engine 1000.

[0042] Referring to FIGS. 4 and 5, the ventilation passage 102 comprises a first cavity 104 and a second cavity 105. The first cavity 104 extends along a first horizontal direction D1 and communicates with the mounting hole 101. The second cavity 105 is connected with the first cavity 104 and extends along a second horizontal direction D2. The first horizontal direction D1 and the second horizontal direction D2 are both perpendicular to the height direction H, so that the external accumulated water is not easy to enter the ventilation passage 102 under the action of gravity. In addition, the first cavity 104 and the second cavity 105 extend along two horizontal directions respectively, which further prevents the accumulated water from directly flowing into the mounting hole 101 of the cylinder head 100.

[0043] In some embodiments, the ventilation passage 102 further comprises a third cavity 106. The third cavity 106 extends along the height direction H and communicates with the second cavity 105. The third cavity 106 communicates with the outside of the cylinder head 100. In some embodiments, the third cavity 106 communicates with the bottom of the cylinder head 100, so that the external accumulated water is further prevented from entering.

[0044] Referring to FIG. 2, the ventilation passage 102 is provided with an opening 103 on the outside of the cylinder head 100. The diameter of the opening 103 is not greater than 6 mm, so that the external accumulated water is not easy to enter the ventilation passage 102 through the opening 103. In some embodiments, the opening 103 is arranged on the bottom surface of the cylinder head 100. In combination with FIG. 5, the third cavity 106 communicates with the opening 103, so that the mounting hole 101 of the cylinder head 100 is balanced with the external air pressure, the exhaust gas at the joint of the spark plug assembly 110 and the cylinder head 100 is discharged, the pressure change in the combustion chamber is prevented, and the excessive accumulation of oil gas is prevented, so that the spark plug assembly 110 is prevented from creeping and misfiring, and the failure rate of the engine 1000 is reduced.

[0045] In summary, the ventilation passage 102 extends in an L shape along the projection of the height direction H, so that the ventilation passage 102 has at least two extension directions (i.e. the first horizontal direction D1 and the second horizontal direction D2), thereby having a blocking effect on the water entering the ventilation passage 102, preventing the water from directly entering the mounting hole 101 and causing the engine 1000 to malfunction.

[0046] In some embodiments, the ventilation passage 102 can also extend along a curved path, for example, the ventilation passage 102 extends in an S shape along the projection of the height direction H, which can also prevent the water from directly entering the mounting hole 101 through the ventilation passage 102.

[0047] It can be understood that the ventilation passage 102 has at least two extension directions, i.e. the ventilation passage 102 is not extended from the outside of the cylinder head 100 to the mounting hole 101 in a fixed direction. Therefore, any solution that is not extended from the outside of the cylinder head 100 to the mounting hole 101 in a fixed direction should be within the scope of the present application.

[0048] In some embodiments, referring to FIG. 3, the cylinder head 100 is further provided with a protrusion 107 protruding from the top surface of the cylinder head 100 along the height direction H, and the mounting hole 101 is in communication with the protrusion 107. The protrusion 107 is provided for mounting the spark plug assembly 110 and cooperating with the spark plug assembly 110 to achieve sealing.

[0049] In some embodiments, referring to FIG. 3, the spark plug assembly 110 includes a mounting block 113, a cover 114, and a sleeve rod 115. The mounting hole 101 is connected to the cylinder head 100. The cover 114 is connected to the mounting hole 101 and is sleeved to the protrusion 107. The sleeve rod 115 is connected to the cover 114 and is sleeved to the protrusion 107 and the mounting hole 101. Through the cooperation of the cover 114 and the protrusion 107, external water is less likely to enter the mounting hole 101, so that the sleeve rod 115 and the ignition coil usually arranged on the sleeve rod 115 are not in contact with the water, thereby improving the sealing between the spark plug assembly 110 and the cylinder head 100.

[0050] Referring to FIG. 1, the mounting block 113 is provided with two mounting ears 116, which are evenly arranged around the mounting hole 101, in other words, the two mounting ears 116 are symmetrically arranged on the two sides of the mounting hole 101. The engine 1000 further comprises fasteners 120, which are threaded into the mounting ears 116 and connected with the cylinder head 100, so that the spark plug assembly 110 is fixed to the cylinder head 100. When the fasteners 120 are tightened, the mounting block 113 is subjected to a downward pressure along the height direction H towards the cylinder head 100, so that the cover 114 is tightly abutted against the protrusion 107, further improving the sealing between the cover 114 and the protrusion 107.

[0051] In some embodiments, the first sealing member 111 is arranged in the cover 114, and when the fasteners 120 are tightened, the first sealing member 111 is abutted against the protrusion 107, so that the inner top surface of the cover 114 and the top surface of the protrusion 107 are filled with the first sealing member 111 and the first sealing member 111 is compressed, making it difficult for external water to enter the mounting hole 101 through the protrusion 107, thereby improving the sealing of the engine 1000.

[0052] In some embodiments, the first sealing member 111 can be a rubber sealing ring and is arranged around the protrusion 107, thereby ensuring good sealing between the cover 114 and the protrusion 107.

[0053] In some embodiments, the interference amount between the first sealing member 111 and the protrusion 107 is 1.5-2.5 mm, thereby further ensuring good sealing between the cover 114 and the protrusion 107.

[0054] Referring to FIG. 3, the second sealing member 112 is arranged on the sleeve rod 115 and abutted against the inner wall of the mounting hole 101, thereby preventing the water permeating into the mounting hole 101 from further permeating into the ignition coil on the sleeve rod 115 and the cylinder body. The double sealing arrangement of the spark plug assembly 110 is conducive to preventing external water from entering the mounting hole 101 of the cylinder head 100.

[0055] In some embodiments, the interference amount between the second sealing member 112 and the inner wall of the mounting hole 101 is 1.5-2.5 mm, which is conducive to preventing the water permeating into the mounting hole 101 from further permeating.

[0056] In some embodiments, the sleeve rod 115 is provided with a tapered portion, in other words, the outer wall of the sleeve rod 115 is tapered, which cooperates with the inner wall of the mounting hole 101, so that the interference amount between the sleeve rod 115 and the mounting hole 101 gradually increases during the tightening of the fasteners 120 on the mounting portion, facilitating assembly.

[0057] The vehicle provided by the embodiment of the present application comprises the engine 1000 described above. The vehicle provided by the embodiment of the present application has the engine 1000 with good waterproof performance and low failure rate.

[0058] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used herein, the term "set" can mean either a component is directly attached to another component or a component is attached to another component via an intermediate component. The features described in one embodiment herein can be applied to another embodiment either individually or in combination with other features unless such features are not applicable or are otherwise stated.

[0059] The present application has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and illustration, and are not intended to limit the present application to the described embodiments. Those skilled in the art can understand that more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of the present application.

Claims

1. An engine (1000), comprising: a cylinder head (100) provided with a mounting hole (101) and a vent passage (102) in communication with the mounting hole (101), the vent passage (102) being in communication with the outside of the cylinder head (100) and having at least two extension directions, the at least two extension directions of the vent passage (102) being arranged at an angle; and a spark plug assembly (110) penetrating the mounting hole (101) along a height direction (H), the spark plug assembly (110) comprising a first sealing member (111) connected outside the mounting hole (101) and a second sealing member (112) connected inside the mounting hole (101), the first sealing member (111) and the second sealing member (112) being spaced apart along the height direction (H) and arranged above the vent passage (102).

2. The engine (1000) of claim 1, wherein, The vent passage (102) is provided with an opening (103) on the outside of the cylinder head (100), the diameter of the opening (103) being not greater than 6 mm.

3. The engine (1000) of claim 2, wherein, The opening (103) is arranged at the bottom of the cylinder head (100).

4. The engine (1000) according to any one of claims 1 to 3, wherein, The vent passage (102) comprises a first cavity (104) extending along a first horizontal direction (D1) perpendicular to the height direction (H) and in communication with the mounting hole (101), and a second cavity (105) connected with the first cavity (104) and extending along a second horizontal direction (D2) perpendicular to the height direction (H).

5. The engine (1000) of claim 4, wherein, The vent passage (102) further comprises a third cavity (106) extending along the height direction (H) and in communication with the second cavity (105), the third cavity (106) being in communication with the outside of the cylinder head (100).

6. The engine (1000) according to any one of claims 1 to 5, wherein, The cylinder head (100) is provided with a protrusion (107), the mounting hole (101) being in communication with the protrusion (107), the spark plug assembly (110) comprising: a mounting block (113) connected with the cylinder head (100); a cover (114) connected with the mounting hole (101) and sleeved to the protrusion (107); and a sleeve rod (115) connected with the cover (114) and penetrating the protrusion (107) and the mounting hole (101).

7. The engine (1000) of claim 6, wherein, The first sealing member (111) is arranged inside the cover (114) and abuts against the protrusion (107).

8. The engine (1000) of claim 6 or 7, wherein, The second sealing member (112) is arranged on the sleeve rod (115) and abuts against the inner wall of the mounting hole (101).

9. The engine (1000) of claim 7, wherein, An interference between the first sealing member (111) and the protrusion (107) is 1.5-2.5 mm.

10. The engine (1000) of claim 8, wherein, An interference between the second sealing member (112) and the inner wall of the mounting hole (101) is 1.5-2.5 mm.

11. The engine (1000) according to any one of claims 6 to 10, wherein, The mounting block (113) is provided with at least two mounting ears (116), and the at least two mounting ears (116) are uniformly arranged around the mounting hole (101). The engine (1000) further comprises a fastener (120) penetrating the mounting ear (116) and connected with the cylinder cover (100).

12. The engine (1000) according to any one of claims 6 to 10, wherein, The sleeve rod (115) is provided with a conical surface portion matched with the inner wall of the mounting hole (101).

13. A vehicle comprising the engine (1000) according to any one of claims 1-12.

Images