Engine cylinder cover capable of increasing engine oil return
By designing valve guide holes and pushrod holes on the diesel engine cylinder head and casting oil return channels, the problem of untimely oil return above the cylinder head was solved, improving lubrication and mechanical strength while reducing manufacturing costs.
Patent Information
- Application Number
- CN202520090214.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-15
AI Technical Summary
The lack of oil return channels between the valves above the cylinder head in existing diesel engines results in untimely oil return, affecting lubrication and increasing manufacturing costs.
Valve guide holes and pushrod holes are designed on the cylinder head, and the oil returns from the rocker arm oil sump to the pushrod hole and finally back to the oil pan through an integrally cast oil return channel, thereby enhancing the structural strength of the cylinder head.
This allows for timely oil return, ensuring continuous lubrication circulation, improving the mechanical strength of the cylinder head, and reducing manufacturing costs.
Smart Images
Figure CN223578052U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology, and specifically to an engine cylinder head that increases oil return. Background Technology
[0002] The Stage IV fuel consumption regulations impose increasingly stringent requirements on engine fuel consumption. Diesel engines primarily reduce fuel consumption by increasing combustion, meaning the mechanical and thermal loads on the engine are increasing. The structural strength requirements for the engine cylinder head are also rising; simultaneously, more engine oil is needed to improve engine lubrication. Currently, the industry mainly focuses on increasing the amount of engine oil added and the oil pump's pumping capacity, which increases costs while offering limited improvement in engine oil lubrication.
[0003] The shortcomings of existing technology are:
[0004] 1. Due to the lack of oil passages between the four valves on the cylinder head of existing diesel engines, the timely return of oil to the oil pan is severely affected.
[0005] 2. Because existing diesel engine cylinder heads increase the oil return passage through machining, the manufacturing cost increases and the mechanical strength of the cylinder head decreases. Summary of the Invention
[0006] This utility model addresses the above-mentioned problems by providing an engine cylinder head that increases oil return, with the aim of improving cylinder head strength, ensuring sufficient oil volume in the oil pan, and guaranteeing continuous circulation of engine oil lubrication.
[0007] To solve the above problems, the technical solution provided by this utility model is as follows:
[0008] An engine cylinder head for increasing oil return includes valve guide holes and pushrod holes, wherein:
[0009] The valve guide holes are machined into corresponding positions on the cylinder; the pushrod holes are machined into a row and arranged laterally on one side of the valve guide holes; an integrally cast rocker arm oil sump is provided on the outer side of the upper end face of each valve guide hole; an integrally cast oil return channel is provided between each cylinder; an integrally cast oil return channel is provided between each cylinder and the corresponding pushrod hole; the oil return channel is used to return the oil circulating to the rocker arm oil sump to the pushrod hole and then back to the engine oil pan.
[0010] Preferably, the valve guide holes surrounding each cylinder include a first valve guide hole, a second valve guide hole, a third valve guide hole, and a fourth valve guide hole, wherein the first valve guide hole is located on the side away from the pushrod hole; the first valve guide hole, the second valve guide hole, the third valve guide hole, and the fourth valve guide hole are arranged clockwise around the outside of the cylinder; an oil return channel is provided between the first valve guide hole and the second valve guide hole; an oil return channel is provided between the second valve guide hole and the third valve guide hole; an oil return channel is provided between the third valve guide hole and the fourth valve guide hole; and an oil return channel is provided between the third valve guide hole and the pushrod hole.
[0011] Preferably, a valve seat is installed below the valve guide hole; a valve oil seal is provided at the connection between the valve guide hole and the bottom of the rocker arm oil reservoir; a valve spring is sleeved on the outside of the valve guide hole extending upward from the rocker arm oil reservoir; a spring seat and a valve are sequentially arranged above the valve spring; a locking plate is sleeved between the spring seat and the valve guide hole.
[0012] Preferably, the depth of the oil return channel is 3mm; the width of the oil return channel is 8mm.
[0013] Preferably, the cylinder head has 6 cylinders and 24 valve guide holes.
[0014] Preferably, the number of push rod holes is 12.
[0015] Preferably, a first reinforcing rib integrally cast is provided between two adjacent cylinders.
[0016] Preferably, a second reinforcing rib and a third reinforcing rib are respectively provided between the cylinder and the two corresponding push rod holes.
[0017] Compared with the prior art, this utility model has the following advantages:
[0018] 1. The cylinder head strength is improved by casting reinforcing ribs on the cylinder head rocker arm oil sump of this utility model.
[0019] 2. Because the cylinder head rocker arm oil sump of this utility model is cast with an oil return passage, the oil is guaranteed to flow back to the pushrod hole and then back to the oil pan in a timely manner, thereby ensuring the amount of oil in the oil pan and thus ensuring the continuous circulation of engine oil lubrication. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the cylinder head assembly structure according to a specific embodiment of the present utility model;
[0021] Figure 2 This is a schematic diagram of the cylinder head component assembly structure according to a specific embodiment of the present invention;
[0022] Figure 3 This is a schematic diagram of the oil flow direction in the cylinder head rocker arm oil sump of a specific embodiment of this utility model;
[0023] Figure 4 This is a schematic diagram of the oil flow channel dimensions of a specific embodiment of this utility model.
[0024] Among them: 100. Guide hole, 200. Push rod hole, 300. Rocker arm oil sump, 400. Oil return channel, 500. Cylinder, 110. First valve guide hole, 120. Second valve guide hole, 130. Third valve guide hole, 140. Fourth valve guide hole, 101. Valve seat, 102. Valve oil seal, 103. Valve spring, 104. Spring seat, 105. Valve, 106. Locking plate, 601. First reinforcing rib, 602. Second reinforcing rib, 603. Third reinforcing rib, A. Depth, B. Width, C. Oil flow direction Detailed Implementation
[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.
[0026] like Figure 1 As shown, an engine cylinder head for increasing oil return includes a valve guide hole 100 and a pushrod hole 200, wherein:
[0027] Valve guide holes 100 are machined and arranged in a ring at the corresponding position of cylinder 500; pushrod holes 200 are machined and arranged in a row laterally on one side of valve guide holes 100; a rocker arm oil sump 300 integrally cast is provided on the outer side of the upper end face of each valve guide hole 100; an oil return channel 400 integrally cast is provided between each cylinder 500; an oil return channel 400 integrally cast is provided between each cylinder 500 and the corresponding pushrod hole 200; the oil return channel 400 is used to return the oil circulating to the rocker arm oil sump 300 to the pushrod hole 200 and then back to the engine oil pan, thereby ensuring the amount of oil in the oil pan and ensuring the continuous circulation of engine oil lubrication.
[0028] like Figure 3As shown, it should be noted that the valve guide holes 100 arranged around each cylinder 500 include a first valve guide hole 110, a second valve guide hole 120, a third valve guide hole 130, and a fourth valve guide hole 140. The first valve guide hole 110 is located on the side away from the pushrod hole 200. The first valve guide hole 110, the second valve guide hole 120, the third valve guide hole 130, and the fourth valve guide hole 140 are arranged around the outside of the cylinder 500 in a clockwise direction. An oil return channel 400 is provided between the first valve guide hole 110 and the second valve guide hole 120; an oil return channel 400 is provided between the second valve guide hole 120 and the third valve guide hole 130; an oil return channel 400 is provided between the third valve guide hole 130 and the fourth valve guide hole 140; and an oil return channel 400 is provided between the third valve guide hole 130 and the pushrod hole 200.
[0029] It needs further explanation that the engine oil circulation involves the oil pump pumping oil from the oil pan through the main oil passage to the top of the cylinder head, lubricating components such as the rocker arm shaft, and then flowing out into the rocker arm oil sump 300 above the cylinder head. The oil in the rocker arm oil sump 300 flows back to the engine oil pan under its own gravity, thus entering the next cycle. Due to the irregular spatial arrangement of the cylinder head rocker arm oil sump 300, some areas have oil deposits that cannot return to the engine oil pan in time, causing the engine oil circulation to be interrupted. Generally, this is addressed by increasing the engine oil fill volume and using an oil pump with a larger oil pump capacity to ensure continuous oil circulation. Some systems also use machined oil channels to ensure timely oil return to the oil pan, but this increases manufacturing costs and reduces cylinder head strength. This invention uses a cast oil return channel 400 to ensure timely oil return to the oil pan, while avoiding machining processes and saving manufacturing costs.
[0030] like Figure 2 As shown, it should be noted that a valve seat ring 101 is installed below the valve guide hole 100; a valve oil seal 102 is provided at the connection between the valve guide hole 100 and the bottom of the rocker arm oil reservoir 300; a valve spring 103 is sleeved on the outside of the valve guide hole 100 extending upwards from the rocker arm oil reservoir 300; a spring seat 104 and a valve 105 are arranged sequentially above the valve spring 103; a locking plate 106 is sleeved between the spring seat 104 and the valve guide hole 100.
[0031] like Figure 4 As shown, in this specific embodiment, the depth A of the oil return channel 400 is 3mm; the width B of the oil return channel 400 is 8mm.
[0032] In this specific embodiment, there are 6 cylinders 500 on the cylinder head and 24 valve guide holes 100.
[0033] In this specific embodiment, the number of push rod holes 200 is 12.
[0034] It should be noted that a first reinforcing rib 601, integrally cast, is provided between two adjacent cylinders 500 to enhance the structural strength of the cylinder head.
[0035] It should be noted that a second reinforcing rib 602 and a third reinforcing rib 603 are respectively provided between the cylinder 500 and the two corresponding push rod holes 200, which are used to improve the structural strength of the cylinder head.
[0036] It should be noted that this utility model is implemented on a 7.0-liter engine.
[0037] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the present invention is in a state with fewer features than all of the disclosed individual embodiments. Therefore, the appended claims are hereby clearly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the present invention.
[0038] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.
[0039] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."
[0040] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An engine head that increases oil return, characterized by: The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character.
2. The engine head that increases oil return of claim 1, wherein: The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character.
3. The engine head that increases oil return of claim 1, wherein: The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character.
4. The engine head that increases oil return of claim 3, wherein: The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character.
5. The engine head that increases oil return of claim 4, wherein: The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character.
6. The engine head that increases oil return of claim 5, wherein: The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character.
7. The engine head that increases oil return of claim 6, wherein: The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is arranged on the corresponding position of the cylinder (500) by machining, and the push rod hole (200) is arranged transversely on one side of the valve guide hole (100) by machining a character. The valve guide hole (100) is 8. The engine head that increases oil return of claim 7, wherein: The second reinforcing ribs (602) and the third reinforcing ribs (603) are arranged between the cylinder (500) and the corresponding two push rod holes (200) respectively.