Novel diesel engine cylinder cover

Abstract

The utility model relates to a part of a diesel engine, in particular to a novel diesel engine cylinder cover, which comprises a cylinder head and a cylinder head cover arranged on the cylinder head, the cylinder head comprises a cylinder head body and a rocker arm chamber arranged on the cylinder head body, an inlet valve spring seat hole and a push rod sleeve hole are arranged in the rocker arm chamber, an inlet valve rod chamber is arranged in the cylinder head body, and the push rod sleeve hole is arranged in the cylinder head body. The air inlet valve spring seat hole is communicated with the air inlet valve rod chamber, and the rocker arm chamber part provided with the push rod sleeve hole extends out of the cylinder head body. According to the novel diesel engine cylinder cover designed in the scheme, a push rod chamber in a traditional cylinder cover is omitted, so that the structure is more simplified, and the heat dissipation performance is better.

Description

Technical Field

[0001] The utility model relates to components of a diesel engine, in particular to a novel diesel engine cylinder cover. Background Art

[0002] The diesel engine's casing consists of a crankcase and cylinders, which are topped with a cylinder head. Inside the cylinder head are located an intake valve stem and push rods for intake and exhaust. In the prior art, the intake valve stem is located within the cylinder head's intake valve stem chamber, while the push rod is located within the cylinder head's push rod chamber. This structural design not only increases the cost of aluminum for the cylinder head, but also increases overall heat generation as both the intake valve stem and push rod operate within the cylinder head, reducing the diesel engine's service life and energy efficiency. Utility Model Content

[0003] The utility model aims to provide a novel diesel engine cylinder cover which can reduce manufacturing cost and improve heat dissipation performance.

[0004] A novel diesel engine cylinder head in this solution includes a cylinder head and a cylinder head cover arranged on the cylinder head. The cylinder head includes a cylinder head body and a rocker arm chamber arranged on the cylinder head body. An intake valve spring seat hole and a push rod sleeve hole are provided in the rocker arm chamber. An intake valve rod chamber is provided in the cylinder head body. The intake valve spring seat hole is connected to the intake valve rod chamber. The rocker arm chamber portion where the push rod sleeve hole is provided extends out of the cylinder head body.

[0005] Furthermore, a plurality of cooling fins are provided on the cylinder head body in the circumferential direction of the intake valve stem chamber.

[0006] Furthermore, a push rod sleeve is provided at the push rod sleeve hole, a tube body of the push rod sleeve is provided outside the cylinder head body, and a push rod is provided in the push rod sleeve.

[0007] Furthermore, a rocker arm support is provided in the rocker arm chamber, the middle part of the rocker arm is hinged to the rocker arm support, the two ends of the rocker arm are respectively connected to the push rod and the intake valve rod, the rod body of the push rod is provided in the push rod sleeve, and the rod body of the intake valve rod is provided in the intake valve rod chamber.

[0008] Furthermore, an intake valve spring seat is provided in the intake valve spring seat hole, and a spring is provided between the intake valve spring seat and the end of the rocker arm.

[0009] Furthermore, a sealing ring is provided between the end of the push rod sleeve and the push rod sleeve hole.

[0010] Furthermore, one end of the push rod is connected to one end of the rocker arm through a ball joint connection pair, and the other end of the push rod is fixedly provided with a valve tappet; one end of the intake valve stem is connected to the other end of the rocker arm through a ball joint connection pair, and the other end of the intake valve stem is fixedly provided with an intake valve.

[0011] Furthermore, a rotatable decompression shaft is provided on the cylinder head cover, a torsion spring is sleeved on the decompression shaft, one end of the decompression shaft is close to one end of the rocker arm connected to the intake valve stem, and the other end of the decompression shaft is connected to a decompression handle.

[0012] Furthermore, a waste passage is provided in the cylinder head body, and the waste passage passes through the cylinder head body. The waste passage is provided on one side of the intake passage, and one end thereof is opened to communicate with the rocker arm chamber.

[0013] Furthermore, an air guide plate is fixedly connected to one side of the cylinder head body, one end of the air guide plate is open, and the rest of the air guide plate is tightly fitted with the cylinder head body.

[0014] The advantages of the present invention are as follows: compared with the prior art, the push rod chamber structure of the cylinder head is eliminated, and part of the rocker arm chamber, that is, the push rod sleeve hole, is extended outward from the cylinder head body, thereby simplifying the overall structure of the cylinder head. In addition, the structure is no longer closed, thereby increasing the heat dissipation space around the cylinder head and allowing for the layout of better heat sinks, thereby further improving the heat dissipation effect.

[0015] The push rod chamber of the traditional cylinder head is replaced by the push rod sleeve hole in this solution, and the part accommodating the push rod is changed to a push rod sleeve placed outside the cylinder head, which saves the volume of the cylinder head, reduces the amount of raw materials used in the cylinder head, and simplifies the processing technology of the cylinder head.

[0016] The exhaust duct is set on the cylinder head body, which can continuously discharge the combustion exhaust gas in the crankcase through the exhaust duct to the rocker arm chamber and then discharge it to the outside. This can timely remove the exhaust gas generated by combustion from the diesel engine, prevent it from affecting other components, reduce the failure rate, and extend the service life of the diesel engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a new diesel engine cylinder head according to the present invention;

[0018] Figure 2 This is a perspective view of a new diesel engine cylinder head from a second angle according to the present invention;

[0019] Figure 3 This is a schematic diagram of the rocker arm interior structure of a new diesel engine cylinder head according to the present invention;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a top view of a rocker arm chamber of a new diesel engine cylinder head according to the present invention;

[0022] Figure 6This is a front view of a new diesel engine cylinder head according to the present invention;

[0023] Figure 7 for Figure 6 Schematic cross-sectional view of the middle BB;

[0024] Figure 8 This is a three-dimensional diagram of a new diesel engine cylinder head according to the present invention from a third angle;

[0025] Figure 9 This is a front view and CC sectional view of a cylinder head cover of a new diesel engine cylinder head according to the present invention.

[0026] Figure 10 The utility model is a schematic diagram of the interior of a cylinder head cover of a new type of diesel engine cylinder head.

[0027] Figure 11 The utility model is a schematic diagram of the cylinder head body structure of a new type of diesel engine cylinder cover. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0029] according to Figures 1 to 11 As shown, the present invention provides a novel diesel engine cylinder head, comprising a cylinder head 100 and a cylinder head cover 200 mounted on the cylinder head 100. The cylinder head 100 comprises a cylinder head body 1 and a rocker arm chamber 2 mounted on the cylinder head body 1. An air deflector 21 is fixedly connected to one side of the cylinder head body 1. One end of the air deflector 21 is open, and the rest of the air deflector 21 is tightly fitted to the cylinder head body 1.

[0030] The rocker arm chamber 2 is provided with an intake valve spring seat hole 3 and a push rod sleeve hole 4. In this embodiment, there are two intake valve spring seat holes 3 and two push rod sleeve holes 4, respectively. An intake valve stem chamber 5 is provided within the cylinder head body 1. The intake valve spring seat hole 3 is directly connected to the intake valve stem chamber 5. The portion of the rocker arm chamber 2 where the push rod sleeve hole 4 is provided extends outside the cylinder head body 1. The connected portion of the cylinder head body 1 and the rocker arm chamber 2 is an integrally formed structure.

[0031] A plurality of heat sinks 6 are provided on the cylinder head body 1 in the circumferential direction of the intake valve stem chamber 5. The plurality of heat sinks are provided on the outer shell surrounding the intake valve stem chamber 5. Such a design can further improve the heat dissipation performance of the cylinder head body 1.

[0032] Compared with the prior art, the push rod chamber structure of the cylinder head is eliminated, and part of the rocker arm chamber 2, that is, the push rod sleeve hole 4, is extended outward from the cylinder head body 1, thereby simplifying the overall structure of the cylinder head. In addition, the structure is no longer closed, thereby increasing the circumferential heat dissipation space of the cylinder head 100 and allowing for the layout of better heat sinks to further improve the heat dissipation effect.

[0033] As a further improvement of this embodiment, a push rod sleeve 7 is provided at the push rod sleeve hole 4. The tube body of the push rod sleeve 7 is provided outside the cylinder head body 1, and a push rod 8 is provided in the push rod sleeve 7. One end of the push rod sleeve 7 is sealed with the push rod sleeve hole 4, that is, a sealing ring 14 is provided between the two. Specifically, the clamping head of the push rod sleeve 7 is clamped and embedded in the sealing ring 14. The sealing ring 14 has an interference fit with the hole wall of the push rod sleeve hole 4, and the other end is sealed with the crankcase (not shown in the figure).

[0034] In the prior art, the push rod chamber is inside the cylinder head. The push rod chamber of the traditional cylinder head is now replaced with the push rod sleeve hole 4 in this solution, and the part accommodating the push rod is changed to a push rod sleeve 7 placed outside the cylinder head, which saves the volume of the cylinder head, reduces the amount of raw materials used in the cylinder head, and simplifies the processing technology of the cylinder head.

[0035] A rocker arm support 9 is provided in the rocker arm chamber 2, and the middle part of the rocker arm 10 is hinged to the rocker arm support 9. The two ends of the rocker arm 10 are respectively connected to the push rod 8 and the intake valve stem 11. The rod body of the push rod 8 is provided in the push rod sleeve 7, and the rod body of the intake valve stem 11 is provided in the intake valve stem chamber 5.

[0036] An intake valve spring seat 12 is provided in the intake valve spring seat hole 3 , and a spring 13 is provided between the intake valve spring seat 12 and the end of the rocker arm 10 .

[0037] One end of the push rod 8 is connected to one end of the rocker arm 10 through a ball joint connection pair, and the other end of the push rod 8 is fixed with a valve tappet 15; one end of the intake valve stem 11 is connected to the other end of the rocker arm 10 through a ball joint connection pair, and the other end of the intake valve stem 11 is threadedly connected with an intake valve 16.

[0038] As a further improvement to this embodiment, a decompression shaft 17 is rotatably mounted on the cylinder head cover 200. A torsion spring 18 is sleeved on the decompression shaft 17. The two ends of the torsion spring 18 are respectively fixed to the cylinder head cover 200 and the decompression shaft 17 by means of latches. One end of the decompression shaft 17 is adjacent to one end of the rocker arm 10 connected to the intake valve stem 11. The other end of the decompression shaft 17 is connected to a decompression handle 19. By pulling the decompression handle, the cylinder head exhaust can be manually decompressed.

[0039] As a further improvement of this embodiment, a waste channel 20 is provided in the cylinder head body 1. The waste channel 20 is a straight structure channel. The waste channel 20 runs through the cylinder head body 1. The waste channel 20 is provided on one side of the intake channel 22, and one end thereof is opened to connect to the rocker arm chamber 2.

[0040] The exhaust duct 20 is provided on the cylinder head body 1, which can continuously discharge the combustion exhaust gas in the crankcase through the exhaust duct 20 to the rocker arm chamber 2, and then discharge it to the outside. In this way, the exhaust gas generated by combustion is promptly discharged from the diesel engine to prevent it from affecting other components, reducing the failure rate and increasing the service life of the diesel engine.

[0041] The above description is merely an embodiment of the present invention. The well-known specific structures and characteristics of the scheme are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention. These modifications and improvements should also be considered within the scope of protection of the present invention and will not affect the effectiveness of the implementation of the present invention or the practical application of the patent.

Claims

1. A novel diesel engine cylinder head, comprising a cylinder head (100) and a cylinder head cover (200) disposed on the cylinder head (100), characterized in that: The cylinder head (100) comprises a cylinder head body (1) and a rocker arm chamber (2) arranged on the cylinder head body (1); an intake valve spring seat hole (3) and a push rod sleeve hole (4) are provided in the rocker arm chamber (2); an intake valve rod chamber (5) is provided in the cylinder head body (1); the intake valve spring seat hole (3) is connected to the intake valve rod chamber (5); and the rocker arm chamber (2) where the push rod sleeve hole (4) is provided extends outside the cylinder head body (1).

2. A novel diesel engine cylinder head according to claim 1, characterized in that: A plurality of cooling fins (6) are provided on the cylinder head body (1) in the circumferential direction of the intake valve stem chamber (5).

3. A novel diesel engine cylinder head according to claim 1 or 2, characterized in that: A push rod sleeve (7) is provided at the push rod sleeve hole (4); the tube body of the push rod sleeve (7) is arranged outside the cylinder head body (1); and a push rod (8) is arranged inside the push rod sleeve (7).

4. A novel diesel engine cylinder head according to claim 3, characterized in that: A rocker arm support (9) is provided in the rocker arm chamber (2), the middle portion of the rocker arm (10) is hinged to the rocker arm support (9), the two ends of the rocker arm (10) are respectively connected to the push rod (8) and the intake valve stem (11), the rod body of the push rod (8) is provided in the push rod sleeve (7), and the rod body of the intake valve stem (11) is provided in the intake valve stem chamber (5).

5. A novel diesel engine cylinder head according to claim 4, characterized in that: An intake valve spring seat (12) is provided in the intake valve spring seat hole (3), and a spring (13) is provided between the intake valve spring seat (12) and the end of the rocker arm (10).

6. A novel diesel engine cylinder head according to claim 3, characterized in that: A sealing ring (14) is provided between the end of the push rod sleeve (7) and the push rod sleeve hole (4).

7. A novel diesel engine cylinder head according to claim 4, characterized in that: One end of the push rod (8) is connected to one end of the rocker arm (10) via a ball joint connection pair, and the other end of the push rod (8) is fixedly provided with a valve tappet (15); one end of the intake valve stem (11) is connected to the other end of the rocker arm (10) via a ball joint connection pair, and the other end of the intake valve stem (11) is fixedly provided with an intake valve (16).

8. The novel diesel engine cylinder head according to claim 4, characterized in that: A rotatable decompression shaft (17) is provided on the cylinder head cover (200), a torsion spring (18) is sleeved on the decompression shaft (17), one end of the decompression shaft (17) is close to one end of the rocker arm (10) connected to the intake valve stem (11), and the other end of the decompression shaft (17) is connected to a decompression handle (19).

9. The novel diesel engine cylinder head according to claim 1, characterized in that: A waste passage (20) is provided in the cylinder head body (1), and the waste passage (20) passes through the cylinder head body (1). The waste passage (20) is provided on one side of the intake passage (22), and one end thereof is opened and connected to the rocker chamber (2).

10. The novel diesel engine cylinder head according to claim 1, characterized in that: An air guide plate (21) is fixedly connected to one side of the cylinder head body (1), one end of the air guide plate (21) is open, and the rest of the air guide plate (21) is tightly fitted to the cylinder head body (1).

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