Cooling device of engine cylinder block
By integrally casting the cylinder liner on the diesel engine block and adding inter-cylinder coolant channels, the problem of insufficient cooling channels and reduced mechanical strength in the existing technology is solved, thereby improving the cooling capacity of the engine block and saving costs.
Patent Information
- Application Number
- CN202420419351.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-05
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-05
AI Technical Summary
The existing diesel engine cylinder cooling devices have problems such as insufficient cooling channels, reduced mechanical strength and high cost, resulting in poor engine cooling effect.
The cylinder liner is integrally cast on the cylinder block to increase the coolant channels between cylinders. The cast cooling structure is used to improve the cooling effect while maintaining the mechanical strength of the cylinder block.
Without increasing manufacturing costs, the cooling capacity and durability of the engine block are improved, and the coolant throughput and cooling effect are significantly improved.
Smart Images
Figure CN222376584U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of engine cooling, and in particular to a cooling device for an engine cylinder. Background Art
[0002] The fourth stage fuel consumption regulations have increasingly stringent requirements on engine fuel consumption. Diesel engines mainly reduce fuel consumption by increasing explosion, which means that the mechanical and thermal loads of the engine are increasing, and the problem of engine cylinder cooling is becoming more and more prominent. At present, the industry is mainly continuously improving the engine water pump capacity and oil cooler capacity, resulting in increased costs, but the improvement in engine cooling capacity is limited.
[0003] The defects of the prior art are as follows:
[0004] 1. The existing diesel engines with cylinder sleeves cast in one piece in the current prior art have no reserved cooling channels between the cylinders, which seriously affects the cooling capacity between the cylinders, thereby reducing the overall cooling effect of the engine cylinder.
[0005] 2. The prior art also has a method of increasing the cooling channel in the cylinder by machining and drilling, which destroys the original structure of the cylinder body, thereby reducing the mechanical strength of the cylinder body and increasing the manufacturing cost.
[0006] 3. Increase the cooling channel in the cylinder by drilling holes. The cooling channel in the existing technology is generally 7mm in diameter and 38.5mm in area. 2 The circular hole has a small heat dissipation area, which affects the overall cooling effect of the engine cylinder.
[0007] 4. Since medium and heavy-duty diesel engines mostly use independent cylinder liner structures, this leads to high engine costs. Summary of the invention
[0008] In view of the above-mentioned problems, the present invention provides a cooling device for an engine cylinder block, the purpose of which is to save parts and assembly manufacturing costs; the coolant channels between cylinders are increased without affecting the mechanical strength of the cylinder block, thereby improving the engine cooling effect and improving the durability of the engine; the coolant throughput is increased, thereby significantly improving the cooling capacity of the engine cylinder block.
[0009] To solve the above problems, the technical solution provided by the present invention is:
[0010] The cooling device of the engine cylinder block includes a cylinder block, a cylinder head, a cylinder liner and an inter-cylinder cooling structure, wherein:
[0011] The cylinder sleeve is integrally cast on the cylinder body;
[0012] The inter-cylinder cooling structure is used to provide a coolant channel between the cylinders and is cast at the position where the cylinder liner is located between the cylinders;
[0013] The cylinder head is connected to the cylinder body by bolts.
[0014] Preferably, the cylinder sleeves are integrally cast on the cylinder block of the L6 engine; the cylinder sleeves are arranged in a row horizontally at the positions of the six cylinders of the cylinder block.
[0015] Preferably, a coolant inlet is provided on the lower right side of the cross section of the cylinder liner;
[0016] The cylinder head is provided with a coolant outlet;
[0017] The coolant is used to cool the cylinder liners, and enters each of the cylinder liners from right to left in sequence from the coolant inlet; the coolant passes upward through the cylinder head and then flows out from the coolant outlet to enter the engine cooling circulation system.
[0018] Preferably, five inter-cylinder cooling structures are cast on the cylinder liner; the inter-cylinder cooling structures are distributed in a row transversely at positions where the cylinder liner is located between the cylinders.
[0019] Preferably, the thickness of the cylinder liner is 13 mm;
[0020] The longitudinal section of the inter-cylinder cooling structure is a long strip through hole with arc-shaped ends, which is used to reduce the stress of the inter-cylinder cooling structure;
[0021] The through hole height of the inter-cylinder cooling structure is 39 mm and the width is 4 mm;
[0022] The distance from the upper end of the through hole of the inter-cylinder cooling structure to the upper end of the cylinder liner is 10 mm.
[0023] Preferably, the cylinder liner is integrally cast on the cylinder block of the L-type engine.
[0024] Preferably, the cylinder liner is integrally cast on the cylinder block of the V-type engine.
[0025] Preferably, the cylinder liner is integrally cast on the cylinder block of the W-type engine.
[0026] Compared with the prior art, the utility model has the following advantages:
[0027] 1. Since the cylinder sleeve of the utility model is directly cast on the cylinder body, the parts and assembly manufacturing costs are saved.
[0028] 2. Since the utility model adopts a cast cooling structure between the cylinders, the coolant channel between the cylinders is increased without affecting the mechanical strength of the cylinder body, thereby improving the cooling effect of the engine and improving the durability of the engine.
[0029] 3. Since the cooling liquid channel area of the cooling structure between the cylinders of the utility model is cast, which is three times the area of the machined cooling channel, the flow rate of the coolant is increased, thus greatly improving the cooling capacity of the engine cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a cross-sectional schematic diagram of the coolant circulation structure of the cylinder body of a specific embodiment of the utility model;
[0031] Figure 2 A schematic diagram of the coolant circulation structure of a cylinder body according to a specific embodiment of the utility model;
[0032] Figure 3 It is a cross-sectional schematic diagram of the coolant circulation structure of a cylinder body of a specific embodiment of the utility model;
[0033] Figure 4 It is an enlarged schematic diagram of the inter-cylinder cooling structure of a specific embodiment of the utility model;
[0034] Figure 5 It is a schematic diagram comparing the cooling effects of the casting coolant channel and the machining coolant channel in a specific embodiment of the utility model.
[0035] Among them: 100. Cylinder block, 200. Cylinder liner, 300. Inter-cylinder cooling structure, 400. Coolant inlet. DETAILED DESCRIPTION
[0036] The present invention is further explained below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.
[0037] The cooling device of the engine cylinder block comprises a cylinder block 100, a cylinder head, a cylinder liner 200 and an inter-cylinder cooling structure 300, wherein:
[0038] The cylinder liner 200 is integrally cast on the cylinder block 100 .
[0039] like Figure 1 As shown, the inter-cylinder cooling structure 300 is used to provide a coolant channel between the cylinders and is cast at the position where the cylinder liner 200 is located between the cylinders.
[0040] The cylinder head is connected to the cylinder block 100 by bolts.
[0041] In this specific embodiment, the cylinder sleeve 200 is integrally cast on the cylinder block 100 of the L6 engine; the cylinder sleeves 200 are arranged in a row horizontally at the positions of the six cylinders of the cylinder block 100 .
[0042] It should be noted that a coolant inlet 400 is provided on the lower right side of the cross section of the cylinder liner 200 .
[0043] It should be noted that a coolant outlet is provided on the cylinder head.
[0044] like Figure 2 As shown, it needs to be further explained that the coolant is used to cool the cylinder sleeve 200, and enters each cylinder sleeve 200 from the coolant inlet 400 from right to left in sequence; the coolant passes upward through the cylinder head and then flows out from the coolant outlet and enters the engine cooling circulation system.
[0045] like Figure 3 As shown, it should be noted that five inter-cylinder cooling structures 300 are cast on the cylinder liner 200; the inter-cylinder cooling structures 300 are arranged horizontally in a row at the position of the cylinder liner 200 between the cylinders. The inter-cylinder cooling structures 300 provide coolant channels between the cylinder liners, ensuring that the engine coolant passes through the inter-cylinder cooling structures 300, taking away more heat around the cylinder liner 200, and reducing the temperature of the cylinder liner 200 by more than 30°C.
[0046] like Figure 4 As shown, in this specific embodiment, the thickness of the cylinder sleeve 200 is 13 mm.
[0047] It should be noted that the longitudinal section of the inter-cylinder cooling structure 300 is a long strip-shaped through hole with arc-shaped ends, which is used to reduce the stress of the inter-cylinder cooling structure 300 .
[0048] In this specific embodiment, the through hole of the inter-cylinder cooling structure 300 has a height of 39 mm and a width of 4 mm.
[0049] In this specific embodiment, the distance from the upper end of the through hole of the inter-cylinder cooling structure 300 to the upper end of the cylinder sleeve 200 is 10 mm.
[0050] like Figure 5 As shown, in this specific embodiment, under the condition of the same engine power, the temperature values measured at different positions of the cylinder block 100 with a cast coolant channel and a machined coolant channel have obvious temperature improvement effects.
[0051] It should be noted that the cooling device for the engine cylinder in this specific embodiment is implemented on a 7.0-liter engine.
[0052] In this specific embodiment, the cylinder liner 200 is integrally cast on the cylinder block 100 of the L-type engine.
[0053] In this specific embodiment, the cylinder liner 200 is integrally cast on the cylinder block 100 of the V-type engine.
[0054] In this specific embodiment, the cylinder liner 200 is integrally cast on the cylinder block 100 of the W-type engine.
[0055] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
[0056] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.
[0057] The above description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".
[0058] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A cooling device for an engine cylinder, characterized in that: The invention comprises a cylinder block (100), a cylinder head, a cylinder liner (200) and an inter-cylinder cooling structure (300), wherein: The cylinder sleeve (200) is integrally cast on the cylinder body (100); The inter-cylinder cooling structure (300) is used to provide a coolant channel between the cylinders and is cast at a position of the cylinder sleeve (200) between the cylinders; The cylinder head is connected to the cylinder body (100) by bolts.
2. The cooling device for an engine cylinder according to claim 1, characterized in that: The cylinder sleeve (200) is integrally cast on the cylinder block (100) of the L6 engine; the cylinder sleeves (200) are arranged in a row horizontally at the positions of the six cylinders of the cylinder block (100).
3. The cooling device for the engine cylinder according to claim 2, characterized in that: A coolant inlet (400) is provided on the lower right side of the cross section of the cylinder liner (200); The cylinder head is provided with a coolant outlet; The coolant is used to cool the cylinder sleeves (200), and enters each cylinder sleeve (200) from right to left in sequence from the coolant inlet (400); the coolant passes upward through the cylinder head and then flows out from the coolant outlet to enter the engine cooling circulation system.
4. The cooling device for an engine cylinder according to claim 3, characterized in that: Five inter-cylinder cooling structures (300) are cast on the cylinder liner (200); the inter-cylinder cooling structures (300) are distributed in a row transversely at positions of the cylinder liner (200) between the cylinders.
5. The cooling device for the engine cylinder block according to claim 4, characterized in that: The thickness of the cylinder sleeve (200) is 13 mm; The longitudinal section of the inter-cylinder cooling structure (300) is a long strip-shaped through hole with arc-shaped ends, which is used to reduce the stress of the inter-cylinder cooling structure (300); The through hole of the inter-cylinder cooling structure (300) has a height of 39 mm and a width of 4 mm; The distance between the upper end of the through hole of the inter-cylinder cooling structure (300) and the upper end of the cylinder sleeve (200) is 10 mm.
6. The cooling device for an engine cylinder according to claim 1, characterized in that: The cylinder sleeve (200) is integrally cast on the cylinder block (100) of the L-shaped engine.
7. The cooling device for an engine cylinder according to claim 1, characterized in that: The cylinder sleeve (200) is integrally cast on the cylinder block (100) of the V-type engine.
8. The cooling device for an engine cylinder according to claim 1, characterized in that: The cylinder sleeve (200) is integrally cast on the cylinder block (100) of the W-type engine.