A diesel engine, a diesel engine-driven device, and a diesel engine assembly

Abstract

The application provides a diesel engine, a diesel engine driving device and a diesel engine assembly, and relates to the technical field of diesel engines. The diesel engine comprises a plurality of cylinder holes formed in a cylinder body; a cylinder cover is installed above the cylinder body, and an air inlet pipeline and an air outlet pipeline are formed in the cylinder cover, wherein the air inlet pipeline and the air outlet pipeline are both communicated with at least one cylinder hole; the air inlet pipeline is used for guiding air into the at least one cylinder hole, and the air outlet pipeline is used for discharging exhaust gas from the at least one cylinder hole; a rear end gear train is installed at the rear of the cylinder cover and the cylinder body, and the rear end gear train is used for doing work outside. The application guarantees the environment for the diesel engine to operate under high explosion pressure conditions.

Description

Technical Field

[0001] This application relates to the field of diesel engine technology, and more particularly to a diesel engine, a diesel engine drive device, and a diesel engine assembly. Background Technology

[0002] Diesel engines, as a type of power equipment, stand out for their unique compression ignition principle: they compress pure air to extremely high temperatures and pressures, then inject diesel fuel at the appropriate time, using the high temperature to initiate spontaneous combustion, rather than relying on spark plug ignition. This characteristic gives diesel engines excellent thermal efficiency and powerful torque output, making them an ideal choice for a variety of transportation equipment and heavy machinery.

[0003] However, with increasingly stringent environmental standards and continuous technological advancements, the application of diesel engines is facing new challenges and opportunities. To improve exhaust emission cleanliness and reduce fuel consumption, diesel engines need to operate at higher combustion pressures. Under this high-pressure environment, diesel engines can not only burn fuel more completely, thus reducing harmful emissions, but also improve thermal efficiency, thereby reducing fuel consumption. Therefore, ensuring the operation of diesel engines under high-pressure conditions is a problem that this application urgently needs to solve. Summary of the Invention

[0004] This application provides a diesel engine, a diesel engine drive device, and a diesel engine assembly to ensure that the diesel engine operates under high explosion pressure conditions.

[0005] In a first aspect, this application provides a diesel engine, including: a cylinder head, a cylinder block, and a rear gear system;

[0006] The cylinder block has multiple cylinder bores;

[0007] The cylinder head is mounted on top of the cylinder block. An intake pipe and an exhaust pipe are provided on the cylinder head. Both the intake pipe and the exhaust pipe are connected to at least one cylinder bore. The intake pipe is used to guide air into at least one cylinder bore, and the exhaust pipe is used to discharge exhaust gas from at least one cylinder bore.

[0008] The rear gear train is installed behind the cylinder head and cylinder block, and is used to perform external power.

[0009] In one possible design, a water jacket and a fire plate are also provided on the cylinder head;

[0010] The water jacket has a hollow structure and is installed inside the intake and exhaust pipes. The water jacket is used to guide the flow of coolant.

[0011] The fire control plate is located between the cylinder head and the cylinder block.

[0012] In one possible design, the lower end face of the cylinder head and the upper end face of the cylinder block are both provided with multiple first bolt holes corresponding to multiple first bolts.

[0013] The cylinder head and cylinder block are sealed together by multiple first bolts and multiple first cylinder gaskets.

[0014] In one possible design, the diesel engine also includes a main bearing cap;

[0015] The main bearing cap is installed below the cylinder block. The upper end face of the main bearing cap and the lower end face of the cylinder block are both provided with multiple second bolt holes corresponding to multiple second bolts.

[0016] The main bearing cap and cylinder block are sealed together by multiple second bolts and multiple second cylinder gaskets.

[0017] In one possible design, cooling water channels are also provided on the cylinder block, arranged around each cylinder bore.

[0018] Cooling channels are used to guide the flow of coolant;

[0019] The lower end face of the cylinder block is also provided with an arched structure, which is used to increase the strength of the diesel engine.

[0020] In one possible design, the main bearing cap is manufactured using a fracture-expansion process.

[0021] Both the cylinder head and cylinder block are made of vermicular graphite cast iron.

[0022] In one possible design, the rear gear train includes crankshaft gears, camshaft gears, air compressor gears, and gear sets.

[0023] The crankshaft gear is used to drive the camshaft gear and the air compressor gear through the gear set; both the camshaft gear and the air compressor gear are used to perform external work.

[0024] In one possible design, the gear set includes an intermediate gear set and a transition gear set;

[0025] The intermediate gear set includes a first intermediate gear that meshes with the crankshaft gear, and a second intermediate gear that is coaxially arranged and fixedly connected to the first intermediate gear;

[0026] The transition gear set includes a first transition gear, a second transition gear, and a third transition gear; the first intermediate gear, the first transition gear, and the air compressor gear mesh one by one; the second intermediate gear, the second transition gear, the third transition gear, and the camshaft gear mesh one by one.

[0027] Secondly, this application provides a diesel engine drive device, comprising:

[0028] Valve train, air compressor, and diesel engine, as described in the first aspect of the invention, for driving the valve train and air compressor.

[0029] Thirdly, this application also provides a diesel engine assembly, comprising:

[0030] A diesel engine assembly body, and a diesel engine drive device, as described in the second aspect of the invention, for driving the diesel engine assembly body.

[0031] This application provides a diesel engine, a diesel engine drive device, and a diesel engine assembly. The cylinder block has multiple cylinder bores. The cylinder head is mounted above the cylinder block and has intake and exhaust pipes, both of which communicate with at least one cylinder bore. The intake pipe guides air into at least one cylinder bore, and the exhaust pipe discharges exhaust gas from at least one cylinder bore. A rear-end gear train is mounted behind the cylinder head and cylinder block and is used for external power delivery. The following technical effects are achieved: A new structural design of the cylinder head's water jacket optimizes the cooling water passages, effectively reducing temperature; both the cylinder head and cylinder block are made of vermicular graphite cast iron, improving tensile and fatigue strength; and the use of multiple gears and gear shafts, along with an overhead camshaft arrangement, improves the rigidity and reliability of the valve train. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of a diesel engine scenario provided for an embodiment of this application;

[0034] Figure 2 This is a perspective view of a diesel engine assembly provided in an embodiment of this application;

[0035] Figure 3 A perspective view of the cylinder head provided in an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the cylinder block assembly provided in an embodiment of this application;

[0037] Figure 5 This is a schematic diagram of the rear gear system provided in an embodiment of this application.

[0038] Figure label:

[0039] 100 - Diesel engine; 200 - Diesel engine drive equipment; 300 - Diesel engine assembly; 400 - Diesel locomotive; 500 - Air;

[0040] 110 - Cylinder head; 120 - Cylinder block; 130 - Rear gear train; 140 - Main bearing cap; 150 - Transition plate;

[0041] 111 - Water jacket; 121 - Cylinder bore;

[0042] 131-Crankshaft gear; 132-Camshaft gear; 133-Air compressor gear; 1341-First intermediate gear; 1342-Second intermediate gear; 1344-First transition gear; 1345-Second transition gear; 1346-Third transition gear. Detailed Implementation

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0044] In the embodiments of this application, the terms "first" and "second" are used to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, nor do they necessarily imply difference. It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner. In the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more.

[0045] It should be noted that the phrase "at...time" in the embodiments of this application can refer to the instant at which a certain situation occurs, or to a period of time after the occurrence of a certain situation; the embodiments of this application do not specifically limit this. Furthermore, the oil bath air filter provided in the embodiments of this application is merely an example; an oil bath air filter may also include more or fewer components.

[0046] To facilitate a clear description of the technical solutions in the embodiments of this application, some terms and technologies involved in the embodiments of this application will be briefly introduced below:

[0047] Diesel engine: A diesel engine is an internal combustion engine that works by compressing air to a high temperature and pressure, then injecting atomized diesel fuel into it. The diesel fuel ignites spontaneously and pushes the piston to do work. Due to its high thermal efficiency and reliability, diesel engines are widely used in transportation, industrial production, power generation, and other fields.

[0048] High explosion pressure: High explosion pressure refers to the rapid rise of pressure in the combustion chamber of an internal combustion engine to a very high level during combustion. This phenomenon usually occurs in diesel engines because diesel engines use compression ignition, which involves compressing air to a high temperature and pressure state and then injecting atomized diesel fuel, which then spontaneously combusts and produces an explosive combustion process.

[0049] Vermicular graphite cast iron, also known as compacted graphite cast iron or dense graphite cast iron, is a high-strength cast iron material that falls between gray cast iron and ductile cast iron. Its name comes from the fact that the graphite morphology observed under a microscope resembles worm-like or short, thick strip-like structures.

[0050] With the development of engine technology, engines are used in a variety of large-scale mechanical equipment, providing power support for various transportation devices. A diesel engine is a power device used to compress pure air to extremely high temperatures and pressures, and then inject diesel fuel to initiate spontaneous combustion.

[0051] With increasing environmental awareness, people are recognizing the importance of reducing engine pollution. Reducing diesel engine emissions is typically achieved by operating under high combustion pressure conditions. This not only improves combustion efficiency but also effectively reduces the generation of harmful emissions. Thus, while ensuring power output, it also mitigates environmental impact. Furthermore, increasingly stringent fuel consumption regulations have set clear standards for diesel engine fuel efficiency. This means that diesel engines not only need to reduce emissions but also achieve higher fuel economy standards to ensure more efficient energy use while meeting environmental goals.

[0052] In existing technologies, to improve exhaust gas cleanliness, various cylinder head mating methods are typically used to achieve high-pressure operation conditions. However, relying solely on the cylinder head-to-cylinder block mating method to ensure a sealed environment and increase the diesel engine's pressure limit may not allow for prolonged high-pressure operation, and this method does not consider engine fuel consumption.

[0053] To address the aforementioned issues, the diesel engine was structurally redesigned to enable high-explosion-pressure operation and reduce fuel consumption.

[0054] Furthermore, the diesel engine should have its cylinder block designed with appropriate materials and structure to ensure its sealing performance.

[0055] Furthermore, the cylinder head of the diesel engine should be structurally designed to ensure the sealing between the cylinder block and the cylinder head, and to improve the pressure tolerance limit of the diesel engine.

[0056] Furthermore, diesel engines should have their drive structure designed to utilize various gear and crankshaft combinations to improve rigidity, operational reliability, and reduce fuel consumption.

[0057] Based on this, embodiments of this application provide a diesel engine, a diesel engine drive device, and a diesel engine assembly, which can be used in the field of diesel engine technology and are intended to ensure that the diesel engine operates under high explosion pressure conditions.

[0058] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0059] Figure 1 This is a schematic diagram illustrating a scenario of a diesel engine provided in an embodiment of this application. It should be noted that... Figure 1 The examples shown are merely examples of scenarios in which the embodiments of this application can be applied, to help those skilled in the art understand the technical content of this application, but do not mean that the embodiments of this application cannot be used in other devices, systems, environments or scenarios.

[0060] like Figure 1 The diagram illustrates a scenario involving a diesel engine, including a diesel engine 100, a diesel engine drive unit 200, and a diesel engine assembly 300.

[0061] The diesel engine 100 and the diesel engine drive unit 200 are both mounted on the diesel engine assembly 300, which is mounted on the diesel locomotive 400 to provide power to the diesel locomotive 400.

[0062] The diesel engine 100 compresses the intake air 500 and injects diesel fuel at the appropriate time to initiate auto-ignition, so that the diesel engine reaches high explosion pressure operation, thereby enabling the diesel engine drive equipment 200 to obtain power, perform work externally, and drive the diesel locomotive 400 to provide power.

[0063] Figure 2 This is a perspective view of a diesel engine assembly provided in an embodiment of this application. Figure 2As shown, the diesel engine assembly 300 includes various devices, such as the cylinder block 120 and cylinder head 110 of the diesel engine 100, the rear gear train 130, the main bearing cap 140, etc., as well as the valve train and air compressor of the diesel engine drive equipment, and other devices. The cylinder head 110 is mounted above the cylinder block 120, and the rear gear train 130 is located at the rear end of the diesel engine assembly 300 and is connected to other devices of the diesel engine assembly 300 via a transition plate 150.

[0064] This embodiment is in Figure 1 Scene and Figure 2 Based on the three-dimensional schematic diagram of the diesel engine assembly, the diesel engine 100 is described in detail. For example... Figure 2 As shown, the diesel engine 100 includes: a cylinder head 110, a cylinder block 120, and a rear gear train 130;

[0065] The cylinder block 120 has multiple cylinder holes 121;

[0066] The cylinder head 110 is mounted on top of the cylinder block 120. The cylinder head 110 has an intake pipe and an exhaust pipe, both of which are connected to at least one cylinder bore 121. The intake pipe is used to guide air into at least one cylinder bore 121, and the exhaust pipe is used to discharge exhaust gas from at least one cylinder bore 121.

[0067] The rear gear train 130 is installed behind the cylinder head 110 and the cylinder block 120, and is used to perform external work.

[0068] Specifically, the diesel engine 100 includes a cylinder head 110, a cylinder block 120, and a rear gear system 130.

[0069] The cylinder block 120 is made of vermicular graphite cast iron, which improves tensile strength and fatigue strength. The cylinder block 120 has multiple cylinder bores 121, which are cylindrical spaces in which the piston reciprocates and forms part of the combustion chamber.

[0070] The upper end face of the cylinder block 120 has multiple first bolt holes; the lower end face of the cylinder block 120 has multiple second bolt holes. The first bolt holes are matched with the first bolts, and the cylinder block 120 and the cylinder head 110 are sealed together through the first bolt holes, the first bolts, and multiple first cylinder gaskets. The cylinder block 120 and the main bearing cap 140 are sealed together through multiple second bolt holes, multiple second bolts, and multiple second cylinder gaskets. Cooling water channels are also provided on the cylinder block 120, surrounding each cylinder bore 121, and are used to guide the flow of coolant. The lower section of the cylinder block 120 also has an arched structure, which is used to increase the strength of the diesel engine.

[0071] A water jacket 111 and a fire plate are provided on the cylinder head 110. The water jacket 111 is a single hollow structure designed and is fitted onto the intake and exhaust pipes to guide the flow of coolant and reduce the temperature of the diesel engine. The fire plate is located on the cylinder head 110, between the top of the cylinder head 110 and the cylinder block 120, and together with the piston top, defines the space of the combustion chamber, which helps to achieve more complete combustion.

[0072] The main bearing cap 140 is installed below the cylinder block 120 and is sealed to the cylinder block 120. The main bearing cap 140 adopts a fracture-expansion process to ensure more accurate and safer bearing positioning and reduce bearing wear.

[0073] The rear gear train 130 includes a crankshaft gear 131, a camshaft gear 132, an air compressor gear 133, and a gear set. The crankshaft gear 131 drives the camshaft gear 132 and the air compressor gear 133 through the gear set; both the camshaft gear 132 and the air compressor gear 133 are used to perform external work and drive the equipment.

[0074] The gear set includes an intermediate gear set and a transition gear set. The intermediate gear set includes a first intermediate gear 1341 and a second intermediate gear 1342. The first intermediate gear 1341 and the second intermediate gear 1342 are arranged coaxially, and the diameter of the first intermediate gear 1341 is larger than that of the second intermediate gear 1342.

[0075] The transition gear set includes a first transition gear 1344, a second transition gear 1345, and a third transition gear 1346. The first intermediate gear 1341, the first transition gear 1344, and the air compressor gear 133 mesh one by one, driving the air compressor gear 133 to move. The second intermediate gear 1342, the second transition gear 1345, the third transition gear 1346, and the camshaft gear 132 mesh one by one, driving the camshaft gear 132 to move.

[0076] This application provides a diesel engine with multiple cylinder bores on the cylinder block; a cylinder head mounted on top of the cylinder block, with an intake manifold and an exhaust manifold, both communicating with at least one cylinder bore; the intake manifold guides air into at least one cylinder bore, and the exhaust manifold discharges exhaust gas from at least one cylinder bore; a rear-end gear train is mounted behind the cylinder head and cylinder block, and is used for external power delivery. The following technical effects are achieved: a new structural design of the cylinder head's water jacket optimizes the cooling water passages, effectively reducing temperature; both the cylinder head and cylinder block are made of vermicular graphite cast iron, improving tensile strength and fatigue resistance; and the use of multiple gears and gear shafts, along with an overhead camshaft arrangement, improves the rigidity and reliability of the valve train.

[0077] In one possible design, a water jacket 111 and a fire plate are also provided on the cylinder head 110;

[0078] The water jacket 111 has a hollow structure and is fitted inside the intake and exhaust pipes. The water jacket 111 is used to guide the flow of coolant.

[0079] The fire control plate is located between the cylinder head 110 and the cylinder block 120.

[0080] Specifically Figure 3 This is a perspective view of the cylinder head provided in an embodiment of this application, as shown below. Figure 3 As shown, the water jacket 111 is installed inside the cylinder head 110, and its cooling water passages are installed inside the water jacket 111. The fire plate is located below the cylinder head 110 and is part of the cylinder head 110.

[0081] The fire plate, also known as the combustion chamber floor plate, is part of the cylinder head 110, located above the cylinder bore, and together with the piston top, defines the space of the combustion chamber.

[0082] The water jacket 111 is a completely hollow design. It is fitted onto the intake and exhaust pipes of the cylinder head 110 to guide coolant flow and reduce the diesel engine temperature. The water jacket 111 transforms single-cylinder cooling into full-flow cooling, improving the heat exchange capacity of the cylinder head 110. Furthermore, cooling water channels are provided inside the water jacket 111 to guide coolant flow.

[0083] To explain the technical effects of the embodiments of this application in detail, a fire-powered plate is used as an example for explanation:

[0084] Taking the existing technology, specifically the structural design of cooling channels, water jackets, and fire plates, as an example, a simulation analysis was conducted, yielding simulation results. The simulation results show that the temperature at the cylinder bore can reach a maximum of 423.5 degrees Celsius, while the minimum temperature is around 88.9 degrees Celsius at the edge of the fire plate. Furthermore, the temperature is concentrated near the cylinder bore, making it difficult to effectively reduce the temperature during the high-pressure operation of the diesel engine.

[0085] Taking the structural design of the water jacket, cooling channels, and fire plate in this embodiment as an example, simulation analysis is performed, and the simulation results are obtained. The simulation results show that the highest temperature at the cylinder bore is 378.6 degrees Celsius, and the lowest temperature at the edge of the fire plate is 89 degrees Celsius. Furthermore, the temperature distribution on the fire plate is more uniform. Comparative analysis with the simulation analysis of the prior art shows that the fire plate temperature distribution in this embodiment is more uniform, reducing the possibility of local overheating and helping to improve the reliability and durability of the diesel engine.

[0086] Similarly, taking the force analysis at the fire plate and the lower cylinder block as an example, the analysis will be conducted as follows:

[0087] Taking the embodiments of this application as an example, stress simulation analysis is performed to obtain simulation results. The simulation results include three types: simulation results of bolt preload, simulation results of bolt preload and high temperature conditions, and simulation results of bolt preload, high temperature conditions, and burst pressure conditions.

[0088] Bolt preload simulation results: The simulation results indicate that the working pressure ranges from 0.19 MPa to 938.54 MPa.

[0089] Simulation results for bolt preload and high-temperature conditions: The simulation results indicate that the working pressure is between 1.67 MPa and 872.75 MPa.

[0090] Simulation results for bolt preload, high temperature conditions, and burst pressure conditions: The simulation results indicate that the working pressure ranges from 1.95 MPa to 872.84 MPa.

[0091] Based on various simulation scenarios, the diesel engine design provided in this application embodiment can withstand a maximum pressure of over 870 MPa, effectively improving the rigidity and strength of the diesel engine.

[0092] The technical effect provided by this embodiment is that by changing the cooling water channel of the water jacket from single-cylinder cooling to full-flow cooling, the heat exchange capacity of the cylinder head is improved and the temperature of the fire plate is reduced.

[0093] In one possible design, the lower end face of the cylinder head 110 and the upper end face of the cylinder block 120 are both provided with a plurality of first bolt holes corresponding to a plurality of first bolts.

[0094] The cylinder head 110 and the cylinder block 120 are sealed together by a plurality of first bolts and a plurality of first cylinder gaskets.

[0095] Specifically, the lower end face of the cylinder head 110 and the upper end face of the cylinder block 120 are provided with multiple first bolt holes, the shape of which is adapted to the first bolt.

[0096] The cylinder head 110 and the cylinder block 120 are sealed together by multiple first bolts, multiple first bolt holes and multiple first cylinder gaskets to form a sealed whole.

[0097] The technical effect provided by this embodiment is that the cylinder block and cylinder head are sealed together by multiple bolts and cylinder gaskets, thus ensuring the sealing performance of the cylinder block and cylinder head.

[0098] Figure 4 This is a schematic diagram of a cylinder block assembly provided in an embodiment of this application. Figure 4 As shown, the cylinder block 120 and the main bearing cap 140 are connected in a sealed manner.

[0099] In one possible design, the main bearing cap 140 is also included;

[0100] The main bearing cap 140 is installed below the cylinder block 120. The upper end face of the main bearing cap 140 and the lower end face of the cylinder block 120 are both provided with multiple second bolt holes corresponding to multiple second bolts.

[0101] The main bearing cap 140 and the cylinder block 120 are sealed together by multiple second bolts and multiple second cylinder gaskets.

[0102] Specifically, the diesel engine 100 also includes a main bearing cap 140.

[0103] like Figure 4 As shown, the main bearing cap 140 is installed below the cylinder block 120. The main bearing cap 140 has multiple second bolt holes, which are adapted to the second bolts.

[0104] The main bearing cap 140 and the cylinder block 120 are sealed together by multiple second bolt holes, multiple second bolts, and multiple second cylinder gaskets.

[0105] The technical effect provided by this embodiment is that connecting the main bearing cap and cylinder block with bolts and cylinder gaskets not only enhances the reliability and durability of the diesel engine, but also improves its maintainability and helps control manufacturing costs.

[0106] In one possible design, the cylinder block 120 is also provided with cooling water channels arranged around each cylinder bore 121;

[0107] Cooling channels are used to guide the flow of coolant;

[0108] The lower end face of the cylinder block 120 is also provided with an arched structure, which is used to increase the strength of the diesel engine.

[0109] Specifically, such as Figure 4 As shown, the cylinder block 120 has multiple cylinder bores 121, and also cooling water channels located inside the water jacket 111. These cooling water channels guide the flow of coolant and surround each cylinder bore, helping to reduce the diesel engine temperature. The cooling water channels of the cylinder head 110 and the cylinder block 120 are interconnected, forming part of the diesel engine cooling system.

[0110] In addition, the lower section of the cylinder block 120 is provided with an arched structure, which is used to increase the strength of the diesel engine.

[0111] To explain in detail the technical effects of the embodiments of this application, the cylinder block and main bearing cap are taken as examples for analysis:

[0112] Taking the existing cylinder block and main bearing cap structural design as an example, a simulation analysis was conducted, and the simulation results were obtained. The simulation results indicate that the temperature variation range of the cylinder block is 88 degrees to 295 degrees, and the temperature is highest in the upper part of the cylinder block, especially near the cylinder bore, and is limited to the vicinity of the cylinder bore, indicating a problem of localized overheating.

[0113] Taking the structural design of the cylinder block and main bearing cap in the embodiment of this application as an example, a simulation analysis was performed, and the simulation results were obtained. The simulation results indicate that the temperature variation range of the cylinder block is 88 degrees to 254 degrees, with the highest temperature significantly reduced by about 40 degrees. The cylinder block temperature can be effectively reduced through the cooling system.

[0114] The technical effect provided by this embodiment is that the cooling water channel is embedded in the water jacket, surrounds the cylinder bore, and extends to the combustion chamber and other key hot areas, ensuring that these areas are adequately cooled.

[0115] In one possible design, the main bearing cap 140 is manufactured using a fracture-expansion process.

[0116] Both the cylinder head 110 and the cylinder block 120 are made of vermicular graphite cast iron.

[0117] Specifically, the main bearing cap 140 is manufactured using a fracture expansion process.

[0118] Both the cylinder head 110 and the cylinder block 120 are made of vermicular graphite cast iron to improve tensile strength.

[0119] The technical advantages provided by this embodiment are as follows: by using a fracture-extension process to manufacture the main bearing cap, the housing ensures more precise and safer bearing positioning, effectively reducing bearing wear. Using vermicular graphite cast iron material improves the tensile strength and fatigue strength of the cylinder block and cylinder head, effectively providing a high-pressure operating environment.

[0120] Figure 5 This is a schematic diagram of the rear gear train provided in an embodiment of this application. Figure 5 As shown, in one possible design, the rear gear train 130 includes a crankshaft gear 131, a camshaft gear 132, an air compressor gear 133, and a gear set;

[0121] The crankshaft gear 131 is used to drive the camshaft gear 132 and the air compressor gear 133 through the gear set; both the camshaft gear 132 and the air compressor gear 133 are used to perform external work.

[0122] Specifically, the rear gear system 130 includes a crankshaft gear 131, a camshaft gear 132, an air compressor gear 133, and a gear set.

[0123] The crankshaft gear 131, as the initial power supply device, drives the camshaft gear 132 to move through the gear set. The crankshaft gear 131, in turn, drives the air compressor gear 133 to move through the gear set.

[0124] Camshaft gear 132 and air compressor gear 133 both drive their respective equipment to perform work. Camshaft gear 132 is arranged with an overhead camshaft.

[0125] The technical advantage provided by this embodiment is that by using the meshing of multiple gear supports to drive the corresponding equipment, energy consumption is reduced, and fuel consumption rate can be effectively reduced. The camshaft type adopts an overhead camshaft arrangement, which improves the rigidity and operational reliability of the valve train.

[0126] In one possible design, the gear set includes an intermediate gear set and a transition gear set;

[0127] The intermediate gear set includes a first intermediate gear 1341 that meshes with the crankshaft gear 131, and a second intermediate gear 1342 that is coaxially arranged with and fixedly connected to the first intermediate gear 1341.

[0128] The transition gear set includes a first transition gear 1344, a second transition gear 1345, and a third transition gear 1346; the first intermediate gear 1341, the first transition gear 1344, and the air compressor gear 133 mesh with each other in turn; the second intermediate gear 1342, the second transition gear 1345, the third transition gear 1346, and the camshaft gear 132 mesh with each other in turn.

[0129] Specifically, the gear set includes the intermediate gear set and the transition gear set.

[0130] The intermediate gear set includes a first intermediate gear 1341 and a second intermediate gear 1342. The first intermediate gear 1341 and the second intermediate gear 1342 are arranged coaxially and share a single gear shaft.

[0131] The first intermediate gear 1341 meshes with the crankshaft gear 131, and the second intermediate gear 1342 meshes with the transition gear set. The diameter of the first intermediate gear 1341 is larger than the diameter of the second intermediate gear 1342.

[0132] The transition gear set includes a first transition gear 1344, a second transition gear 1345, and a third transition gear 1346.

[0133] The first intermediate gear 1344 meshes with the second intermediate gear 1342, the first intermediate gear 1344 meshes with the second intermediate gear 1345, and the second intermediate gear 1345 meshes with the camshaft gear 132, thereby the camshaft gear 132 obtains power to drive the valve train.

[0134] The third transition gear 1346 meshes with the first intermediate gear 1341, and the third transition gear 1346 meshes with the air compressor gear 133, thereby the air compressor gear 133 obtains power to drive the air compressor and other equipment.

[0135] The technical effect provided by this embodiment is that by using the meshing method between multiple intermediate gears and transition gears, energy consumption is reduced, which can effectively reduce the fuel consumption rate.

[0136] This application provides a diesel engine drive device, including:

[0137] The valve train, the air compressor, and the diesel engine, as described in the above embodiments, for driving the valve train and the air compressor.

[0138] Specifically, the camshaft gear 132 drives the air distribution mechanism, and the air compressor gear 133 drives the air compressor.

[0139] Diesel engine drive equipment includes valve train, air compressor, and diesel engine.

[0140] The technical effects provided in this embodiment are similar to those of the diesel engine in the above embodiments, and will not be described again in this embodiment.

[0141] This application provides a diesel engine assembly, including:

[0142] The diesel engine assembly body, and the diesel engine drive device as described in the above embodiments for driving the diesel engine assembly body.

[0143] Specifically, the main body of the diesel engine assembly also includes other structures.

[0144] The diesel engine assembly includes the main body of the diesel engine assembly and the diesel engine drive equipment.

[0145] The technical effects provided in this embodiment are similar to those of the diesel engine in the above embodiments, and will not be described again in this embodiment.

[0146] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A diesel engine, characterized in that, include: Cylinder head (110), cylinder block (120) and rear gear train (130); The cylinder body (120) has multiple cylinder holes (121); The cylinder head (110) is mounted on top of the cylinder block (120). The cylinder head (110) is provided with an intake pipe and an exhaust pipe, both of which are connected to at least one of the cylinder bores (121). The intake pipe is used to guide air into at least one of the cylinder bores (121), and the exhaust pipe is used to discharge exhaust gas from at least one of the cylinder bores (121). The rear gear train (130) is installed behind the cylinder head (110) and the cylinder block (120), and the rear gear train (130) is used to perform external work; The rear gear train (130) includes a crankshaft gear (131), a camshaft gear (132), an air compressor gear (133), and a gear set; the crankshaft gear (131) is used to drive the camshaft gear (132) and the air compressor gear (133) through the gear set; both the camshaft gear (132) and the air compressor gear (133) are used to perform external work; The gear set includes an intermediate gear set and a transition gear set; the intermediate gear set includes a first intermediate gear (1341) that meshes with the crankshaft gear (131), and a second intermediate gear (1342) that is coaxially arranged and fixedly connected to the first intermediate gear (1341). The transition gear set includes a first transition gear (1344), a second transition gear (1345), and a third transition gear (1346); the first intermediate gear (1341), the first transition gear (1344), and the air compressor gear (133) mesh in sequence; the second intermediate gear (1342), the second transition gear (1345), the third transition gear (1346), and the camshaft gear (132) mesh in sequence.

2. The diesel engine according to claim 1, characterized in that, The cylinder head (110) is also provided with a water jacket (111) and a fire plate; The water jacket (111) has a cavity structure and is fitted inside the air intake pipe and the air exhaust pipe. The water jacket (111) is used to guide the flow of coolant. The fire plate is disposed between the cylinder head (110) and the cylinder block (120).

3. The diesel engine according to claim 2, characterized in that, The lower end face of the cylinder head (110) and the upper end face of the cylinder body (120) are both provided with a plurality of first bolt holes corresponding to a plurality of first bolts; The cylinder head (110) and the cylinder block (120) are sealed together by the plurality of first bolts and the plurality of first cylinder gaskets.

4. The diesel engine according to claim 1, characterized in that, The diesel engine also includes a main bearing cap (140). The main bearing cap (140) is installed below the cylinder body (120). The upper end face of the main bearing cap (140) and the lower end face of the cylinder body (120) are provided with multiple second bolt holes corresponding to multiple second bolts. The main bearing cap (140) and the cylinder block (120) are sealed together by the plurality of second bolts and the plurality of second cylinder gaskets.

5. The diesel engine according to claim 4, characterized in that, The cylinder block (120) is also provided with cooling water channels arranged around each of the cylinder bores (121); The cooling water channel is used to guide the flow of coolant; The lower end face of the cylinder block (120) is also provided with an arched structure, which is used to increase the strength of the diesel engine.

6. The diesel engine according to claim 4, characterized in that, The main bearing cover (140) is manufactured using a fracture expansion process; The cylinder head (110) and the cylinder block (120) are both made of vermicular graphite cast iron.

7. A diesel engine drive device, characterized in that, include: A valve train, an air compressor, and a diesel engine as described in any one of claims 1 to 6 for driving the valve train and the air compressor.

8. A diesel engine assembly, characterized in that, include: A diesel engine assembly body, and a diesel engine drive device as described in claim 7 for driving the diesel engine assembly body.

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