Modular integrated lightweight diesel engine block

Abstract

The application relates to a modular integrated lightweight diesel engine body and belongs to the technical field of diesel engines. The thin-wall body frame, the body reinforcing framework, the deep water jacket, the integrated gear chamber and the semi-thrust structure realize the high lightweight and integration requirements of the body, improve the strength and NVH performance of the body under the condition of reducing the size and weight of the body, and the oil filter mounting structure, the static hydraulic tractor oil line structure and the cross beam plate structure are modularly designed, different requirements are selected according to different needs, various application scene requirements are met, the production cost is reduced, the body adaptability is improved, and the problem that the generality of the body on the market is poor and transition is relied on external structures is solved.

Description

Technical Field

[0001] This invention relates to the field of diesel engines, and more specifically to a modular integrated lightweight diesel engine block. Background Technology

[0002] Diesel engines are widely used in engineering machinery, agricultural machinery, and other fields due to their advantages such as high power and good economy. The engine block, as the skeleton of the diesel engine, is the foundation for the operation of all its mechanisms. The main function of the engine block is to withstand various loads during the engine's operation and ensure reliable operation under good lubrication and cooling conditions.

[0003] Currently, in fields such as construction machinery and agricultural machinery, three-cylinder diesel engines are rapidly capturing market share from single-cylinder diesel engines in generator sets, tractors, harvesters, and rice transplanters due to their high efficiency and comfort. To achieve a perfect replacement for single-cylinder diesel engines, the design of three-cylinder diesel engines must also consider the original single-cylinder engine's compatibility requirements. Therefore, arranging a three-cylinder diesel engine within a limited space is a problem that diesel engine designers must address. The engine block, as the skeleton of the entire diesel engine, directly determines the overall dimensions of the engine space, which places higher demands on the integration and lightweight design of the engine block. At the same time, because the original single-cylinder diesel engines have a wide range of applications, the design of the engine block also presents diverse needs. Currently, diesel engine manufacturers often need to develop entirely new engine blocks to meet different compatibility requirements, which is very costly. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a modular integrated lightweight diesel engine block to solve the problems of poor compatibility, limited space layout and low integration in the design of existing three-cylinder diesel engines.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A modular integrated lightweight diesel engine block includes an engine block frame and an engine block reinforcing skeleton. The engine block frame is composed of an integrally cast upper exhaust side section, an upper intake side section, an exhaust side skirt frame, and an intake side skirt frame. Multiple sets of longitudinal figure-eight reinforcing ribs are arranged inside the exhaust side skirt frame and the intake side skirt frame. Transverse triangular ribs are also provided above the longitudinal figure-eight reinforcing ribs. Two transverse through-ribs are arranged on the exterior of both the exhaust side skirt frame and the intake side skirt frame, with short longitudinal ribs arranged on the transverse through-ribs. The through-ribs and the corresponding transverse triangular ribs inside are arranged at the same height. The longitudinal figure-eight reinforcing ribs, transverse triangular ribs, transverse through-ribs and longitudinal short ribs constitute the engine body reinforcing skeleton. The engine body frame and the engine body reinforcing skeleton are integrally cast to form the main body of the diesel engine body. The diesel engine body is surrounded by the exhaust side, intake side, front end face, rear end face, top surface and bottom surface of the engine body. The deep water jacket, independent sand cleaning holes and semi-thrust plate structure are integrated on the engine body. The oil filter oil circuit, hydrostatic oil circuit and bottom reinforcing beam adopt a modular design and are matched with the engine body according to the matching requirements.

[0006] Furthermore, the deep water jacket is arranged between the upper part of the exhaust side and the upper part of the intake side of the engine block. The upper part of the deep water jacket is connected to the top surface of the engine block and the distance between the upper part and the top surface of the engine block is 10-14mm. The lower part of the deep water jacket extends to the main oil passage of the engine block on the intake side and extends to the lower surface of the cylinder on the exhaust side. A metal connecting plate is built into the sand core of the deep water jacket. The metal connecting plate is set on the sand core of the water jacket between the two cylinders and is located at the middle height of the water jacket between the two cylinders. The metal connecting plate is made of a material similar to the casting material of the engine block. Both ends of the metal connecting plate are fixed in the sand core of the water jacket. When casting the engine block, the metal connecting plate exposed outside the sand core is melted and cast into the engine block wall thickness between the two cylinders along with the molten metal.

[0007] Furthermore, inside the exhaust-side skirt frame and the intake-side skirt frame of the engine block, a set of longitudinal figure-eight reinforcing ribs is arranged on each cylinder's intake and exhaust sides. The upper end of the longitudinal figure-eight reinforcing ribs is connected to the bottom surface of the cylinder barrel, and the lower end is connected to the bottom edge of the engine block. Transverse triangular ribs are arranged in the upper area of ​​the longitudinal figure-eight reinforcing ribs. Two transverse triangular ribs are symmetrically arranged on each set of longitudinal figure-eight reinforcing ribs. The transverse triangular ribs and the longitudinal figure-eight reinforcing ribs are cast as one piece. The longitudinal short ribs on the intake side are connected to two transverse through ribs on the intake side. The upper end of the longitudinal short ribs on the exhaust side is connected to the independent sand cleaning hole, and the lower end extends to connect to the transverse through ribs below.

[0008] Furthermore, three independent sand-cleaning holes are provided in the lower part of the camshaft cavity of the exhaust side skirt frame and the intake side skirt frame of the engine block. A drain valve is provided below the independent sand-cleaning hole corresponding to the first cylinder, and the drain valve is located at the lowest point of the entire deep water jacket.

[0009] Furthermore, the diesel engine block is equipped with an intake-side casting module and an exhaust-side casting module for the oil filter. The intake-side casting module includes an oil filter inlet channel and an oil filter mounting base. The oil filter inlet channel extends from the front end of the engine block into the annular groove of the oil filter mounting base. A machined inclined oil hole is arranged at the center of the oil filter mounting base and connects to the main oil passage of the engine block. The exhaust-side casting module eliminates the original intake-side oil filter inlet channel and oil filter mounting base. At the same time, an inclined oil passage is arranged near the front end of the engine block to connect the oil filtered by the exhaust side to the main oil passage of the engine block. For different oil filter arrangement requirements, only casting mounting blocks of the appropriate structure need to be selected when casting the engine block.

[0010] Furthermore, the front end face of the machine body is modularly arranged with a hydrostatic module that meets the requirements of a hydrostatic tractor. The hydrostatic module includes a hydrostatic lubrication oil passage, a process oil passage, and a hydrostatic idler gear mounting hole. The hydrostatic lubrication oil passage is arranged on the front end face of the machine body and communicates with the process oil passage. The process oil passage is connected to the main oil passage of the machine body through the main shaft journal lubrication oil passage. The hydrostatic module is set as an optional machined structure.

[0011] Furthermore, an injection pump mounting flange and a camshaft drive gear mounting seat are integrated on the front end face of the engine block. The injection pump mounting flange is a petal-shaped mounting seat, retaining only the injection pump reinforcing rib from the center hole to the injection pump mounting bolt and the gear chamber cover connecting bolt. The camshaft drive gear mounting seat retains the mounting flange surface of the camshaft thrust plate on the center hole, and camshaft reinforcing ribs are arranged between the mounting flange surface and the gear chamber cover mounting hole. The injection pump mounting flange, the camshaft drive gear mounting seat, and the front end face of the engine block together form an integrated gear chamber.

[0012] Furthermore, a reinforcing beam module is integrated into the bottom surface of the machine body. The reinforcing beam module includes a metal stamped crossbeam plate with de-weighting holes. The bottom surface of the machine body is arranged with two layers of bolt holes, an outer layer of bolt holes for connecting to the oil pan and an inner layer of bolt holes for connecting to the crossbeam plate. The crossbeam plate is set as an optional assembly structure.

[0013] Furthermore, the machine body is provided with a semi-thrust plate structure, which is a 180° thrust plate. The machine body is provided with a corresponding thrust plate mounting groove, and the semi-thrust plate structure is fixed in the thrust plate mounting groove by a flange structure.

[0014] Furthermore, the engine block frame is designed to conform to the internal structure of the engine block and expands outward to form a continuous arc transition outer surface; the upper part of the exhaust side of the engine block is designed to conform to the outer contour of the camshaft hole and tappet hole, the upper part of the intake side of the engine block is designed to conform to the outer contour of the cylinder hole and deep water jacket, and the skirt frame of the exhaust side of the engine block and the skirt frame of the intake side of the engine block are designed to conform to the outer contour of the crankshaft and connecting rod movement trajectory.

[0015] By adopting the above technical solution, the present invention has at least the following beneficial effects: The diesel engine body of this invention is integrally cast using an engine frame and an engine reinforcing skeleton. The reinforcing skeleton consists of two layers: an internal layer and an external layer. The internal layer consists of "longitudinal figure-eight ribs and transverse triangular ribs" filling the cavity of the skirt frame, while the external layer consists of "longitudinal through ribs and transverse short ribs" arranged outside the skirt frame. The external ribs and internal ribs are aligned at the same height to form a force transmission closed loop. This integrally cast composite reinforcing structure can effectively ensure the rigidity of the engine body while compressing the engine wall thickness to 5mm.

[0016] The diesel engine block of the present invention adopts a conformal outward-expanding arc surface structure. Without reducing the structural strength, it not only compresses the overall boundary size of the engine, perfectly adapting to the narrow installation space of the original single-cylinder diesel engine, but also avoids the stress concentration problem at right angle positions. Under the same wall thickness, the overall rigidity and deformation resistance of the engine block are significantly improved.

[0017] The upper part of the deep water jacket is only 10-14mm away from the top surface of the engine block, and the lower part extends directly to the height of the main oil passage on the intake side and to the lower surface of the cylinder on the exhaust side, resulting in a large cooling coverage area. The wall thickness of the deep water jacket is compressed to 6mm, and a metal connecting plate is added to the water jacket sand core between the two cylinders to effectively prevent the slender thin-walled water jacket from breaking. At the same time, a drain valve is integrated at the lowest point of the entire deep water jacket, which, together with three independent sand cleaning holes at the bottom of the camshaft cavity, avoids the risks of uneven cooling of the compact engine block, freezing cracks in winter, and sand accumulation blockage, greatly improving the long-term reliability of the entire machine.

[0018] This invention transforms various differentiated functions, including oil filter installation structure, hydrostatic tractor oil circuit structure, and crossbeam plate structure, into a modular structure that is universally applicable to the basic machine body and can be activated as needed. By selecting modules, it can adapt to different filter arrangements and different hydrostatic matching requirements, meet the needs of various application scenarios, reduce production costs, improve machine body adaptability, and solve the problem of poor machine body versatility and reliance on external structures for transition in the current market.

[0019] This invention achieves the requirements of high lightweighting and integration of the body through a thin-walled frame, a reinforced skeleton, a thin-walled deep-water jacket, an integrated gear chamber, and a semi-thrust structure. While reducing the size and weight of the body, it improves the strength and NVH (Noise, Vibration, Harshness) performance of the body, and solves the problems of low integration and limited space arrangement in current bodies. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a modular integrated lightweight diesel engine block according to the present invention.

[0021] Figure 2This is a schematic diagram of the exhaust side of the diesel engine body of the present invention.

[0022] Figure 3 This is a schematic diagram of the intake side of the diesel engine block of the present invention.

[0023] Figure 4 This is a schematic diagram of the exhaust side interior of the diesel engine body of the present invention.

[0024] Figure 5 This is a schematic diagram of the front end of the diesel engine body of the present invention.

[0025] Figure 6 This is a schematic diagram of the rear end face of the diesel engine body of the present invention.

[0026] Figure 7 This is a schematic diagram of the bottom surface of the diesel engine body of the present invention.

[0027] Figure 8 This is a schematic diagram of the top surface of the diesel engine body of the present invention.

[0028] Figure 9 This is a schematic cross-sectional view of the deep-water jacket of the present invention.

[0029] Figure 10 This is a front view schematic diagram of the water jacket sand core of the present invention.

[0030] Figure 11 This is a top view schematic diagram of the water jacket sand core of the present invention.

[0031] Figure 12 This is a schematic diagram of the casting module on the exhaust side of the machine filter of the present invention.

[0032] Reference numerals: 1. Airframe; 1.1 Upper part of the exhaust side of the airframe; 1.2 Upper part of the intake side of the airframe; 1.3 Skirt frame of the exhaust side of the airframe; 1.4 Skirt frame of the intake side of the airframe; 2. Airframe reinforcing frame; 2.1 Longitudinal figure-eight reinforcing rib; 2.2 Transverse triangular rib; 2.3 Transverse through rib; 2.4 Longitudinal short rib; 3. Deep water jacket; 4. Independent sand cleaning hole; 5. Drain valve; 6. Water jacket sand core; 6.1 Metal connecting plate; 7. Cast module of the oil filter intake side; 7.1 Oil filter inlet channel; 7.2 Oil filter mounting base; 7.3 Machining inclined oil hole; 7.4 Main oil passage of the airframe; 8. Cast module of the oil filter exhaust side; 8.1 Inclined oil passage 9. Front face of the engine block; 9.1. Fuel injection pump mounting flange; 9.2. Camshaft drive gear mounting seat; 9.3. Fuel injection pump reinforcing rib; 9.4. Camshaft reinforcing rib; 10. Hydrostatic module; 10.1. Hydrostatic lubrication oil passage; 10.2. Process oil passage; 10.3. Hydrostatic idler gear mounting hole; 10.4. Main journal lubrication oil passage; 11. Bottom face of the engine block; 11.1. Outer bolt holes; 11.2. Inner bolt holes; 12. Reinforcing beam module; 12.1. Crossbeam plate; 13. Semi-thrust plate structure; 14. Thrust plate mounting groove; 15. Exhaust side of the engine block; 16. Intake side of the engine block; 17. Rear face of the engine block; 18. Top face of the engine block; 19. Diesel engine block. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] See attached document Figure 1-12 As shown, the diesel engine of this invention is a three-cylinder diesel engine, which aims to replace the original single-cylinder diesel engine, adapt to its installation space, and meet the needs of multiple scenarios through lightweight and integrated design. The modular integrated lightweight diesel engine body of this invention includes a lightweight engine body frame 1, an engine body reinforcing skeleton 2, a modularly integrated engine body intake side 16 and oil passage, a highly integrated engine body front end, a modularly integrated engine body bottom, and a lightweight thrust bearing structure. The engine body frame 1 and the engine body reinforcing skeleton 2 are integrally cast to form the main body of the diesel engine body 19. In terms of external outline, the diesel engine body 19 is composed of an engine body exhaust side 15, an engine body intake side 16, an engine body front end face 9, an engine body rear end face 17, an engine body top face 18, and an engine body bottom face 11.

[0035] like Figures 2 to 8As shown, the overall layout of the present invention is as follows: In order to minimize the space occupied by the engine body and reduce the weight of the engine body, the diesel engine body 19 in this embodiment uses 5mm as the main body wall thickness. A thinner wall thickness will reduce the structural strength of the engine body and the NVH performance will be poor. Therefore, the present invention proposes a combination of engine body frame 1 and engine body reinforcing skeleton 2, so that the engine body has the smallest space volume and the lightest weight while having sufficient strength, thus achieving the purpose of lightweighting.

[0036] The body frame 1 is composed of an upper part 1.1 on the exhaust side, an upper part 1.2 on the air intake side, a skirt frame 1.3 on the exhaust side, and a skirt frame 1.4 on the air intake side; the upper part 1.1 on the exhaust side and the skirt frame 1.3 on the exhaust side constitute the main body of the exhaust side 15; the upper part 1.2 on the air intake side and the skirt frame 1.4 on the air intake side constitute the main body of the air intake side 16.

[0037] To ensure sufficient space in the compressor body, the main body wall thickness is 5mm using existing casting methods. This thin wall thickness results in poor body rigidity. Therefore, after determining the key dimensions of the body, following the principle of conformal expansion, the upper exhaust side 1.1 is designed conformally based on the camshaft bore and tappet bore shapes; the upper intake side 1.2 is designed conformally based on the cylinder bore and water jacket shapes; and the exhaust side skirt frame 1.3 and intake side skirt frame 1.4 are designed conformally based on the crankshaft and connecting rod movement trajectories. The body frame 1 designed according to these principles minimizes the body's boundaries while maintaining functionality. Furthermore, the conformal expansion principle results in a curved surface for the body frame 1, which, compared to the planar structure of traditional bodies, reduces the body space while increasing its strength and rigidity.

[0038] The upper part of the exhaust side 1.1, the upper part of the air intake side 1.2, the skirt frame of the exhaust side 1.3, and the skirt frame of the air intake side 1.4 together constitute the body frame 1.

[0039] Furthermore, to improve engine rigidity and reduce vibration and noise of the three-cylinder engine, a reinforcing frame 2 is arranged on the engine frame 1. The engine frame 1 and the reinforcing frame 2 are integrally cast to form the main body of the diesel engine body 19. Figure 2-4As shown, multiple sets of longitudinal figure-eight reinforcing ribs 2.1 are arranged inside the exhaust side skirt frame 1.3 and the intake side skirt frame 1.4 of the engine body. The upper end of the longitudinal figure-eight reinforcing rib 2.1 is connected to the bottom surface of the cylinder, and the lower end is connected to the bottom edge of the engine body. At the same time, a transverse triangular rib 2.2 is set on the upper part of the longitudinal figure-eight reinforcing rib 2.1. On the outside of the exhaust side skirt frame 1.3 and the intake side skirt frame 1.4 of the engine body, two transverse through ribs 2.3 are arranged on each side. Longitudinal short ribs 2.4 are arranged on the transverse through ribs 2.3. The upper transverse through ribs 2.3 and the transverse triangular ribs 2.2 inside the corresponding side are arranged at the same height. The longitudinal figure-eight reinforcing ribs 2.1, transverse triangular ribs 2.2, transverse through ribs 2.3 and longitudinal short ribs 2.4 constitute the engine body reinforcing skeleton 2, which can significantly improve the strength and rigidity of the engine body and reduce engine body vibration and noise.

[0040] Specifically, the longitudinal figure-eight reinforcing ribs 2.1 are arranged inside the exhaust side skirt frame 1.3 and the intake side skirt frame 1.4 of the engine block, with one set on each of the intake and exhaust sides of each cylinder, for a total of six sets of longitudinal figure-eight reinforcing ribs 2.1. Each set of longitudinal figure-eight reinforcing ribs 2.1 has two ribs, which form an "eight" shape at the top and extend downwards. The transverse triangular ribs 2.2 are also arranged inside the exhaust side skirt frame 1.3 and the intake side skirt frame 1.4 of the engine block, and are arranged in the upper area of ​​the figure-eight reinforcing ribs. At the same time, two transverse triangular ribs 2.2 are symmetrically arranged on each set of figure-eight reinforcing ribs. The transverse triangular ribs 2.2 and the longitudinal figure-eight reinforcing ribs 2.1 are cast as one piece. The transverse through-ribs 2.3 are arranged outside the exhaust-side skirt frame 1.3 and the intake-side skirt frame 1.4 of the engine block. Two transverse through-ribs 2.3 are arranged vertically on each of the exhaust-side skirt frame 1.3 and the intake-side skirt frame 1.4, with the upper transverse through-rib 2.3 at the same height as the inner transverse triangular rib 2.2. The longitudinal short ribs 2.4 are arranged outside the exhaust-side skirt frame 1.3 and the intake-side skirt frame 1.4 of the engine block. One longitudinal short rib 2.4 is arranged on the intake side at the position corresponding to cylinder 1 and cylinder 3, connecting the two transverse through-ribs 2.3 on the intake side. One longitudinal short rib 2.4 is arranged on the exhaust side at the position corresponding to cylinder 1, cylinder 2, and cylinder 3. The upper end of the exhaust-side longitudinal short rib 2.4 is connected to the independent sand cleaning hole 4, and the lower end is connected to the transverse through-ribs 2.3.

[0041] like Figure 1 , 2As shown in Figure 9, the deep water jacket 3 is arranged between the upper part 1.1 on the exhaust side and the upper part 1.2 on the intake side of the engine block. In order to reduce the weight of the engine block, the wall thickness of the deep water jacket 3 is 6mm. The upper part of the deep water jacket 3 is connected to the top surface 18 of the engine block, and the distance between the deep water jacket 3 and the top surface 18 of the engine block is 10-14mm. The lower part of the deep water jacket 3 extends to the main oil passage 7.4 of the engine block on the intake side and extends to the lower surface of the cylinder on the exhaust side. At the same time, three independent sand cleaning holes 4 are designed in the lower part of the camshaft cavity on the exhaust side, which are connected to the bottom of the water jacket. A drain valve 5 is designed below the independent sand cleaning hole 4 of the first cylinder. The drain valve 5 is located at the lowest point of the deep water jacket 3 of the entire engine block, which is conducive to completely draining the coolant inside the diesel engine.

[0042] The body of this invention adopts a 6mm thick deep water jacket 3 structure, which further compresses the space size of the body and optimizes the heat dissipation effect of the entire cylinder. On the one hand, the piston cooling nozzle can be eliminated, reducing production costs; on the other hand, in order to effectively clean the sand particles in the water jacket during casting, three independent sand cleaning holes 4 are set at the lower part of the exhaust side camshaft and connected to the bottom of the water jacket. This structure also improves the strength of the body at the camshaft hole.

[0043] Furthermore, such as Figure 10-11 As shown, since the deep water jacket 3 has a thin wall and a long water jacket, it is easy to break when making the water jacket sand core 6. Therefore, a metal connecting plate 6.1 is set on the water jacket sand core 6 between the two cylinders. The metal connecting plate 6.1 is arranged at the middle height of the water jacket between the two cylinders and is used to connect the water jacket sand core 6 on the intake side and the exhaust side. The metal connecting plate 6.1 is made of a material similar to the casting material of the engine body. When casting the engine body, the metal connecting plate 6.1 exposed outside the sand core is melted and cast into the engine body along with the molten metal, and can be perfectly integrated into the wall thickness between the two cylinders.

[0044] Furthermore, there are two matching requirements for the arrangement of diesel engine oil filters: the intake side and the exhaust side. Based on the above requirements, the present invention provides a modular integrated design scheme. For the requirement that the oil filter is arranged on the intake side, an oil filter intake side casting module 7 is designed. For the requirement that the oil filter is arranged on the exhaust side, an oil filter exhaust side casting module 8 is designed. For the two different filter arrangement requirements, it is only necessary to select the casting module with the corresponding structure during casting.

[0045] Figure 12 The diagram shows the oil filter being arranged on the intake side. The oil filter intake side casting module 7 includes an oil filter inlet channel 7.1 and an oil filter mounting base 7.2. The oil filter inlet channel 7.1 extends from the front end face 9 of the engine body into the annular groove of the oil filter mounting base 7.2. The machined inclined oil hole 7.3 is arranged at the center of the oil filter mounting base 7.2 and connected to the main oil passage 7.4 of the engine body.

[0046] Figure 3The diagram shows the oil filter positioned on the exhaust side. The exhaust-side casting module 8 eliminates the oil filter inlet channel 7.1, oil filter mounting base 7.2, and machining inclined oil hole 7.3. Instead, an inclined oil passage 8.1 is arranged near the front face 9 of the engine body to connect the oil filtered on the exhaust side to the main oil passage 7.4 of the engine body. For different filter placement requirements, only modules with different structures need to be selected during casting, achieving a modular integrated engine body solution that reduces the number of engine body types and lowers machining and casting costs.

[0047] Furthermore, the present invention modularly arranges a hydrostatic module 10 to meet the requirements of a hydrostatic tractor on the front end face 9 of the machine body. The hydrostatic module 10 includes a hydrostatic lubrication oil passage 10.1, a corresponding process oil passage 10.2, and a hydrostatic idler gear mounting hole 10.3. The hydrostatic lubrication oil passage 10.1 and the corresponding hydrostatic idler gear mounting hole 10.3 are arranged on the front end face 9 of the machine body. The process oil passage 10.2 is arranged on the air intake side 16 of the machine body. The hydrostatic lubrication oil passage 10.1 is arranged on the front end face 9 of the machine body and communicates with the process oil passage 10.2. The process oil passage 10.2 is connected to the main oil passage 7.4 of the machine body through the main journal lubrication oil passage 10.4. The hydrostatic module 10 here can be selected whether to be machined according to the matching requirements. When there is such a requirement, the hydrostatic oil passage can be machined. When there is no such requirement, the hydrostatic oil passage can be left unmachined.

[0048] Furthermore, such as Figure 5 As shown, a fuel injection pump mounting flange 9.1 and a camshaft drive gear mounting seat 9.2 are integrated at the front end of the engine block. The fuel injection pump mounting flange 9.1 is integrated on the front end face 9 of the engine block. The rear end of the fuel injection pump mounting flange 9.1 is a machined flat surface with a machined through hole in the center, meeting the sealing and positioning requirements after the fuel injection pump is installed. The fuel injection pump mounting flange 9.1 is designed to be lightweight, retaining only the fuel injection pump reinforcing rib 9.3 from the center hole to the fuel pump mounting bolts and the gear chamber cover connecting bolts, which together form the petal-shaped mounting seat of the fuel injection pump mounting flange 9.1, improving the structural strength of the fuel injection pump mounting flange 9.1 surface and reducing its weight. The camshaft drive gear mounting seat 9.2 is also designed to be lightweight, retaining the mounting flange surface of the camshaft thrust plate on the center hole, and arranging the camshaft reinforcing rib 9.4 between this flange surface and the gear chamber cover mounting hole. The fuel injection pump mounting flange 9.1, the camshaft drive gear mounting seat 9.2, and the front end face 9 of the engine block together form the gear chamber.

[0049] like Figure 7As shown, the present invention also integrates a reinforcing beam module 12 on the bottom surface 11 of the machine body. The reinforcing beam module 12 includes a crossbeam plate 12.1, which is a metal plate stamping structure. At the same time, weight-reducing holes are designed on the crossbeam plate 12.1 to reduce the weight of the crossbeam plate 12.1 and avoid the running trajectory of the crankshaft connecting rod. There are two layers of bolt holes on the bottom surface 11 of the machine body. The outer bolt hole 11.1 is used to connect with the oil pan, and the inner bolt hole 11.2 is used to connect and fix the crossbeam plate 12.1. Whether to install this crossbeam plate 12.1 can be selected according to the actual use boundary requirements.

[0050] Furthermore, due to the relatively low power output of diesel engines, such as Figure 6 As shown, the present invention features a lightweight thrust plate structure. Compared with the traditional 360° thrust plate structure, the semi-thrust plate structure 13 of the present invention is a 180° thrust plate, reducing the number of thrust plates by half. The semi-thrust plate structure 13 is provided with a flange structure to fix the position of the thrust plate relative to the thrust plate mounting groove 14. The thrust plate mounting groove 14 is provided on the fourth gear main bearing mounting seat of the machine body, and one is provided at the front and one at the back of the main bearing mounting seat.

[0051] In summary, this invention modularizes the oil filter installation structure, hydrostatic tractor oil circuit structure, and crossbeam plate structure, allowing for selection based on different needs. This satisfies the requirements of various application scenarios, reduces production costs, improves the adaptability of the machine body, and solves the problem of poor machine body versatility and reliance on external structures in the current market. Through a 5mm machine body frame, a reinforced machine body skeleton, a 6mm deep water jacket, an integrated gear chamber, and a semi-thrust structure, the invention achieves a high degree of lightweighting and integration of the machine body. While reducing the size and weight of the machine body, it improves the strength and NVH performance of the machine body, solving the problems of low integration and limited space layout in current machine bodies.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A modular integrated lightweight diesel engine block, the diesel engine block comprising an engine block frame and an engine block reinforcing skeleton, characterized in that, The fuselage frame (1) is composed of an integrally cast upper part of the exhaust side (1.1), upper part of the air intake side (1.2), skirt frame of the exhaust side (1.3), and skirt frame of the air intake side (1.4). Multiple sets of longitudinal figure-eight reinforcing ribs (2.1) are arranged inside the skirt frame of the exhaust side (1.3) and the skirt frame of the air intake side (1.4). At the same time, transverse triangular ribs (2.2) are set on the upper part of the longitudinal figure-eight reinforcing ribs (2.1). Two transverse through-ribs (2.3) are arranged on the outside of the skirt frame (1.3) and the air intake side skirt frame (1.4) of the fuselage. Longitudinal short ribs (2.4) are arranged on the transverse through-ribs. The upper transverse through-rib (2.3) and the corresponding transverse triangular rib (2.2) inside are arranged at the same height. The longitudinal figure-eight reinforcing rib (2.1), transverse triangular rib (2.2), transverse through-rib (2.3) and longitudinal short rib (2.4) constitute the fuselage reinforcing skeleton (2). The engine frame (1) and the engine reinforcing skeleton (2) are integrally cast to form the main body of the diesel engine body (19). The diesel engine body (19) is formed by the exhaust side (15), the intake side (16), the front end face (9), the rear end face (17), the top surface (18), and the bottom surface (11). The deep water jacket (3), the independent sand cleaning hole (4), and the semi-thrust plate structure (13) are integrated on the engine body. The oil filter oil circuit, the hydrostatic oil circuit, and the bottom reinforcing beam adopt a modular design and are matched with the engine body according to the matching requirements.

2. The modular integrated lightweight diesel engine block according to claim 1, characterized in that, The deep water jacket (3) is arranged between the upper part (1.1) of the exhaust side and the upper part (1.2) of the intake side of the engine body. The upper part of the deep water jacket (3) is connected to the top surface (18) of the engine body and the distance between the upper part and the top surface (18) of the engine body is 10-14mm. The lower part of the deep water jacket (3) extends to the main oil passage (7.4) of the engine body on the intake side and extends to the lower surface of the cylinder on the exhaust side. The deep water jacket sand core has a built-in metal connecting plate (6.1). The metal connecting plate (6.1) is set on the water jacket sand core (6) between the two cylinders and is located at the middle height of the water jacket between the two cylinders. The metal connecting plate (6.1) is made of a material similar to the casting material of the engine body. The two ends of the metal connecting plate (6.1) are fixed in the water jacket sand core (6). When casting the engine body, the metal connecting plate (6.1) exposed outside the sand core is melted and cast into the thickness of the engine body wall between the two cylinders along with the molten metal.

3. The modular integrated lightweight diesel engine block according to claim 1, characterized in that, Inside the exhaust side skirt frame (1.3) and the intake side skirt frame (1.4) of the engine body, a set of longitudinal figure-eight reinforcing ribs (2.1) are arranged on the intake and exhaust sides of each cylinder. The upper end of the longitudinal figure-eight reinforcing ribs (2.1) is connected to the bottom surface of the cylinder barrel, and the lower end is connected to the bottom edge of the engine body. The transverse triangular ribs (2.2) are arranged in the upper area of ​​the longitudinal figure-eight reinforcing ribs (2.1). Two transverse triangular ribs (2.2) are symmetrically arranged on each set of longitudinal figure-eight reinforcing ribs (2.1). The transverse triangular ribs (2.2) and the longitudinal figure-eight reinforcing ribs (2.1) are cast as one piece. The longitudinal short ribs (2.4) on the intake side are connected to the two transverse through ribs (2.3) on the intake side. The upper end of the longitudinal short ribs (2.4) on the exhaust side is connected to the independent sand cleaning hole (4), and the lower end extends to connect to the transverse through ribs (2.3) below.

4. The modular integrated lightweight diesel engine block according to claim 1, characterized in that, Three independent sand cleaning holes (4) are provided in the lower part of the camshaft cavity of the exhaust side skirt frame (1.3) and the intake side skirt frame (1.4) of the engine body. A drain valve (5) is provided below the independent sand cleaning hole (4) corresponding to the first cylinder. The drain valve (5) is located at the lowest point of the entire deep water jacket (3).

5. The modular integrated lightweight diesel engine block according to claim 1, characterized in that, The diesel engine block is equipped with an oil filter intake side casting module (7) and an oil filter exhaust side casting module (8). The oil filter intake side casting module (7) includes an oil filter inlet channel (7.1) and an oil filter mounting base (7.2). The oil filter inlet channel (7.1) extends from the front end face (9) of the engine block into the annular groove of the oil filter mounting base (7.2). A machined inclined oil hole (7.3) is arranged in the oil filter mounting base. 7.2) The center is connected to the main oil passage of the engine body (7.4); the oil filter exhaust side casting module (8) cancels the original oil filter inlet channel (7.1) and oil filter mounting seat (7.2) on the intake side, and arranges an inclined oil passage (8.1) near the front end of the engine body to connect the oil filtered by the exhaust side to the main oil passage of the engine body (7.4). For different oil filter arrangement requirements, it is only necessary to select the casting mounting block with the corresponding structure when casting the engine body.

6. The modular integrated lightweight diesel engine block according to claim 1, characterized in that, The front face (9) of the machine body is modularly arranged with a hydrostatic module (10) that meets the requirements of the hydrostatic tractor. The hydrostatic module (10) includes a hydrostatic lubrication oil passage (10.1), a process oil passage (10.2) and a hydrostatic idler gear mounting hole (10.3). The hydrostatic lubrication oil passage (10.1) is arranged on the front face (9) of the machine body and is connected to the process oil passage (10.2). The process oil passage (10.2) is connected to the main oil passage (7.4) of the machine body through the main journal lubrication oil passage (10.4). The hydrostatic module (10) is set as an optional machined structure.

7. The modular integrated lightweight diesel engine block according to claim 1, characterized in that, The front end face (9) of the engine body integrates an injection pump mounting flange (9.1) and a camshaft drive gear mounting seat (9.2). The injection pump mounting flange (9.1) is a petal-shaped mounting seat, with only the injection pump reinforcing rib (9.3) from the center hole to the oil pump mounting bolt and the gear chamber cover connecting bolt. The camshaft drive gear mounting seat (9.2) retains the mounting flange surface of the camshaft thrust plate on the center hole, and the camshaft reinforcing rib (9.4) is arranged between the mounting flange surface and the gear chamber cover mounting hole. The injection pump mounting flange (9.1), the camshaft drive gear mounting seat (9.2) and the front end face (9) of the engine body together form an integrated gear chamber.

8. The modular integrated lightweight diesel engine block according to claim 1, characterized in that, A reinforcing beam module (12) is integrated on the bottom surface (11) of the body. The reinforcing beam module (12) includes a metal stamped crossbeam plate (12.1) with de-weighting holes. The bottom surface of the body is provided with two layers of bolt holes, an outer layer bolt hole (11.1) for connecting the oil pan, and an inner layer bolt hole (11.2) for connecting with the crossbeam plate (12.1). The crossbeam plate (12.1) is set as an optional assembly structure.

9. A modular integrated lightweight diesel engine block according to claim 1, characterized in that, The machine body is provided with a semi-thrust plate structure (13), which is a 180° thrust plate. The machine body is provided with a corresponding thrust plate mounting groove (14), and the semi-thrust plate structure (13) is fixed in the thrust plate mounting groove (14) by a flange structure.

10. A modular integrated lightweight diesel engine block according to claim 1, characterized in that, The engine frame (1) is designed according to the internal structure of the engine and expands outward to form a continuous arc transition outer surface; the upper part of the exhaust side (1.1) of the engine is designed according to the outer contour of the camshaft hole and tappet hole, the upper part of the intake side (1.2) of the engine is designed according to the outer contour of the cylinder hole and deep water jacket, and the exhaust side skirt frame (1.3) and the intake side skirt frame (1.4) of the engine are designed according to the outer contour of the crankshaft and connecting rod movement trajectory.

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