Diesel engine, diesel engine driving equipment and diesel engine assembly

Abstract

The invention provides a diesel engine, diesel engine driving equipment and a diesel engine assembly, and relates to the technical field of diesel engines. A plurality of air cylinder holes are formed in an air cylinder body; the air cylinder cover is installed above the air cylinder body, an air inlet pipeline and an exhaust pipeline are arranged on the air cylinder cover, and the air inlet pipeline and the exhaust pipeline are both communicated with at least one air cylinder hole. The air inlet pipeline is used for guiding air into the at least one cylinder hole, and the exhaust pipeline is used for exhausting exhaust gas of the at least one cylinder hole; the rear end gear train is installed behind the cylinder cover and the cylinder body and used for doing work outwards. The operation environment of the diesel engine under the high detonation pressure condition is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of diesel engines, and in particular to a diesel engine, a diesel engine drive device and a diesel engine assembly. Background Art

[0002] As a power device, the diesel engine stands out for its unique compression ignition working principle: it compresses pure air to extremely high temperature and pressure, then injects diesel at the right time, using high temperature to trigger spontaneous combustion instead of relying on spark plug ignition. This feature gives the diesel engine excellent thermal efficiency and powerful torque output, making it an ideal choice for a variety of transportation equipment and heavy machinery.

[0003] However, with increasingly stringent environmental standards and continuous technological advancement, the application of diesel engines is facing new challenges and opportunities. In order to improve the cleanliness of exhaust emissions and reduce fuel consumption, diesel engines need to operate at higher combustion pressures. In this high explosion pressure environment, diesel engines can not only burn fuel more thoroughly, thereby reducing harmful emissions, but also improve thermal efficiency, thereby reducing fuel consumption. Therefore, how to ensure that diesel engines operate under high explosion pressure conditions is a problem that needs to be urgently solved in this application. Summary of the invention

[0004] The present application provides a diesel engine, a diesel engine driving device and a diesel engine assembly, which are used to ensure that the diesel engine operates under high explosion pressure conditions.

[0005] In a first aspect, the present application provides a diesel engine, comprising: a cylinder head, a cylinder block and a rear end gear train;

[0006] A plurality of cylinder holes are provided on the cylinder body;

[0007] The cylinder head is installed above the cylinder body, and an intake duct and an exhaust duct are provided on the cylinder head, and both the intake duct and the exhaust duct are connected to at least one cylinder hole; the intake duct is used to guide air into the at least one cylinder hole, and the exhaust duct is used to discharge exhaust gas from the at least one cylinder hole;

[0008] The rear end gear train is installed behind the cylinder head and the cylinder body, and the rear end gear train is used to perform work externally.

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

[0010] The water jacket is a hollow structure, and is arranged inside the air intake pipe and the exhaust pipe, and is used to guide the flow of the coolant;

[0011] The fire plate is arranged between the cylinder head and the cylinder body.

[0012] In a possible design, a lower end surface of the cylinder head and an upper end surface of the cylinder body are both provided with a plurality of first bolt holes corresponding to the plurality of first bolts;

[0013] The cylinder head and the cylinder body are sealed and connected by a plurality of first bolts and a plurality of first cylinder gaskets.

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

[0015] The main bearing cap is installed below the cylinder block, and the upper end surface of the main bearing cap and the lower end surface of the cylinder block are both provided with a plurality of second bolt holes corresponding to the plurality of second bolts;

[0016] The main bearing cap and the cylinder block are sealed and connected by a plurality of second bolts and a plurality of second cylinder gaskets.

[0017] In one possible design, the cylinder block is also provided with cooling water channels arranged around each cylinder bore;

[0018] The cooling water channel is used to guide the flow of coolant;

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

[0020] In a possible design, the main bearing cap is made by an expansion and breaking process;

[0021] The materials of the cylinder head and cylinder block are both vermicular graphite cast iron.

[0022] In one possible design, the rear end gear train includes the crankshaft gear, camshaft gear, air compressor gear and gear set;

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

[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 meshing with the crankshaft gear, and a second intermediate gear 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 are meshed one by one; the second intermediate gear, the second transition gear, the third transition gear and the camshaft gear are meshed one by one.

[0027] In a second aspect, the present application provides a diesel engine driven device, comprising:

[0028] A valve train, an air compressor, and a diesel engine for driving the valve train and the air compressor, such as the first aspect of the invention.

[0029] In a third aspect, the present application further provides a diesel engine assembly, comprising:

[0030] A diesel engine assembly body, and a diesel engine driving device for driving the diesel engine assembly body, such as the diesel engine driving device according to the second aspect of the invention.

[0031] The present application provides a diesel engine, a diesel engine driving device and a diesel engine assembly, wherein a plurality of cylinder holes are provided on the cylinder block; a cylinder head is installed above the cylinder block, an intake duct and an exhaust duct are provided on the cylinder head, and both the intake duct and the exhaust duct are connected to at least one cylinder hole; the intake duct is used to guide air into at least one cylinder hole, and the exhaust duct is used to discharge exhaust gas from at least one cylinder hole; the rear end gear train is installed behind the cylinder head and the cylinder block, and the rear end gear train is used to perform work externally. The following technical effects are achieved: by making a new structural design for the water jacket of the cylinder head, the cooling water channel is optimized, and the temperature is effectively reduced; the cylinder head and the cylinder block are both made of vermicular cast iron, which can improve the tensile strength and fatigue resistance; through the cooperative drive of multiple gears and gear shafts, and the arrangement of the overhead camshaft, the rigidity of the valve train and the reliability of its operation are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of a diesel engine scenario provided in an embodiment of the present application;

[0034] Figure 2 A three-dimensional schematic diagram of a diesel engine assembly provided in an embodiment of the present application;

[0035] Figure 3 A three-dimensional schematic diagram of a cylinder head provided in an embodiment of the present application;

[0036] Figure 4 A schematic diagram of a cylinder block assembly provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of a rear end gear train provided for an embodiment of the present application.

[0038] Reference numerals:

[0039] 100-diesel engine; 200-diesel engine driven equipment; 300-diesel engine assembly; 400-diesel locomotive; 500-air;

[0040] 110-cylinder head; 120-cylinder body; 130-rear end gear train; 140-main bearing cap; 150-transition plate;

[0041] 111-water jacket; 121-cylinder hole;

[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 DESCRIPTION

[0043] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0044] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way. In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more.

[0045] It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or can be a period of time after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the oil bath air filter provided in the embodiment of the present application is only used as an example, and the oil bath air filter can also include more or less content.

[0046] In order to clearly describe the technical solutions of the embodiments of the present application, some terms and technologies involved in the embodiments of the present application are briefly introduced below:

[0047] Diesel engine: A diesel engine is an internal combustion engine. Its working principle is to compress air to a high temperature and high pressure state and then spray atomized diesel into it. The diesel will self-ignite and push the piston to do work. Diesel engines are widely used in transportation, industrial production, power generation and other fields due to their high thermal efficiency and reliability.

[0048] High explosion pressure: High explosion pressure refers to the rapid rise of the pressure in the combustion chamber to a very high level during the combustion process of an internal combustion engine. This phenomenon usually occurs in diesel engines because diesel engines use compression ignition, that is, by compressing air to a high temperature and high pressure state and then spraying atomized diesel into it, the diesel will spontaneously ignite and produce an explosive combustion process.

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

[0050] With the development of engine technology, engines are used in a variety of large-scale mechanical equipment to provide power support for a variety of transportation equipment. A diesel engine is a power device that compresses pure air to extremely high temperature and pressure, and injects diesel to cause spontaneous combustion.

[0051] With the improvement of environmental awareness, people are increasingly aware of the importance of reducing the pollution caused by engines. The reduction of diesel engine exhaust emissions is usually achieved by operating under high explosion pressure conditions, which not only improves combustion efficiency, but also effectively reduces the generation of harmful emissions. In this way, while ensuring power output, the impact on the environment is also reduced. In addition, under the increasingly stringent fuel consumption regulations, clear standards are also proposed for the fuel consumption rate of diesel engines. This means that diesel engines not only need to reduce exhaust emissions, but also must meet higher requirements in terms of fuel economy to ensure that more efficient energy utilization can be achieved while meeting environmental protection goals.

[0052] In the prior art, in order to improve the cleanliness of exhaust emissions, a variety of cylinder head matching methods are usually used to achieve high explosion pressure operation conditions. Only using the matching method between the cylinder head and the cylinder body to ensure a sealed environment and improve the diesel engine explosion pressure condition limit may not allow the diesel engine to operate at high explosion pressure for a long time, and this method does not take into account the problem of engine fuel consumption rate.

[0053] In order to solve the above problems, the diesel engine is structurally designed to enable the diesel engine to operate at high explosion pressure and reduce fuel consumption.

[0054] Furthermore, the diesel engine should have a cylinder block with material and structure designed to ensure the sealing of the diesel engine.

[0055] Furthermore, the diesel engine should have a cylinder head structural design to ensure the sealing between the cylinder block and the cylinder head of the diesel engine and improve the pressure bearing limit of the diesel engine.

[0056] Furthermore, the diesel engine should have a structural design of the drive structure, utilizing the coordination between various gears and the crankshaft to improve the rigidity and working reliability of the diesel engine and reduce fuel consumption.

[0057] Based on this, the embodiments of the present 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 to ensure that the diesel engine operates under high explosion pressure conditions.

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

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

[0060] like Figure 1 As shown, a scene diagram of a diesel engine is shown, including: a diesel engine 100, a diesel engine driving device 200 and a diesel engine assembly 300.

[0061] The diesel engine 100 and the diesel engine driving device 200 are both installed on a diesel engine assembly 300 . The diesel engine assembly 300 is installed on a diesel locomotive 400 to provide power for the diesel locomotive 400 .

[0062] The diesel engine 100 compresses the sucked air 500 and injects diesel at an appropriate time to cause spontaneous combustion, so that the diesel engine can operate at a high explosion pressure, thereby enabling the diesel engine drive device 200 to obtain power, perform work outward, and drive the diesel locomotive 400 to provide power.

[0063] Figure 2 This is a three-dimensional schematic diagram of a diesel engine assembly provided in an embodiment of the present application. Figure 2As shown, the diesel engine assembly 300 includes a variety of equipment, such as the cylinder block 120, cylinder head 110, rear end gear system 130, main bearing cap 140 and other equipment of the diesel engine 100, and also includes equipment such as the valve train and air compressor of the diesel engine drive equipment, and other equipment. Among them, the cylinder head 110 is installed above the cylinder block 120, and the rear end gear system 130 is located at the rear end of the diesel engine assembly 300, and is connected to other equipment of the diesel engine assembly 300 through the transition plate 150.

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

[0065] The cylinder body 120 is provided with a plurality of cylinder holes 121;

[0066] The cylinder head 110 is installed above the cylinder block 120. An intake duct and an exhaust duct are provided on the cylinder head 110. Both the intake duct and the exhaust duct are connected to at least one cylinder hole 121. The intake duct is used to guide air into the at least one cylinder hole 121, and the exhaust duct is used to discharge exhaust gas from the at least one cylinder hole 121.

[0067] The rear end gear train 130 is installed at the rear of the cylinder head 110 and the cylinder block 120 , and the rear end gear train 130 is used to perform work externally.

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

[0069] The cylinder block 120 is made of vermicular cast iron material to improve tensile strength and fatigue resistance. The cylinder block 120 is provided with a plurality of cylinder holes 121, which are cylindrical spaces in which the piston reciprocates and form a part of the combustion chamber.

[0070] The upper end surface of the cylinder block 120 is provided with a plurality of first bolt holes; the lower end surface of the cylinder block 120 is provided with a plurality of second bolt holes; the first bolt holes are adapted to the first bolts, and the cylinder block 120 and the cylinder head 110 are sealed and connected through the first bolt holes, the first bolts and the plurality of first cylinder gaskets. The cylinder block 120 and the main bearing cap 140 are sealed and connected through the plurality of second bolt holes, the plurality of second bolts and the plurality of second cylinder gaskets. The cylinder block 120 is also provided with a cooling water channel, which surrounds each cylinder hole 121 and is used to guide the flow of coolant. The lower section of the cylinder block 120 is also provided with an arch structure, which is used to increase the strength of the diesel engine.

[0071] The cylinder head 110 is provided with a water jacket 111 and a fire plate. The water jacket 111 is a whole cavity structure design. The water jacket 111 is set on the intake pipe and the exhaust pipe to guide the flow of coolant and reduce the temperature of the diesel engine. The fire plate is set on the cylinder head 110, between the top of the cylinder head 110 and the cylinder body 120, and defines the space of the combustion chamber together with the top of the piston, which helps to achieve more complete combustion.

[0072] The main bearing cap 140 is installed below the cylinder block 120 and is sealed and connected to the cylinder block 120. The main bearing cap 140 adopts an expansion and breaking process to ensure that the bearing positioning is more accurate and safe, and reduce bearing wear.

[0073] The rear end 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; the camshaft gear 132 and the air compressor gear 133 are both used to work externally and drive 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 coaxially arranged, and the diameter of the first intermediate gear 1341 is greater 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 are meshed one by one to drive 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 are meshed one by one to drive the camshaft gear 132 to move.

[0076] The present application provides a diesel engine, wherein a plurality of cylinder holes are provided on the cylinder block; a cylinder head is installed above the cylinder block, an intake duct and an exhaust duct are provided on the cylinder head, and both the intake duct and the exhaust duct are connected to at least one cylinder hole; the intake duct is used to guide air into at least one cylinder hole, and the exhaust duct is used to discharge exhaust gas from at least one cylinder hole; a rear end gear train is installed behind the cylinder head and the cylinder block, and the rear end gear train is used to perform work externally. The following technical effects are achieved: by making a new structural design for the water jacket of the cylinder head, the cooling water channel is optimized, and the temperature is effectively reduced; the cylinder head and the cylinder block are both made of vermicular cast iron, which can improve the tensile strength and fatigue resistance; by the coordinated drive of multiple gears and gear shafts, and the arrangement of the overhead camshaft, the rigidity of the valve train and the reliability of its operation are improved.

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

[0078] The water jacket 111 is a hollow structure, and is sleeved in the air intake pipe and the exhaust pipe. The water jacket 111 is used to guide the flow of the coolant;

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

[0080] Specifically, Figure 3 A three-dimensional schematic diagram of a cylinder head provided in an embodiment of the present application, as shown in FIG. Figure 3 As shown, the water jacket 111 is installed inside the cylinder head 110, and its cooling water channel is installed inside the water jacket 111. The fire plate is located below the cylinder head 110 and is a part of the cylinder head 110.

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

[0082] The water jacket 111 is designed as a whole cavity. The water jacket 111 is set on the intake pipe and exhaust pipe of the cylinder head 110 to guide the flow of coolant and reduce the temperature of the diesel engine. The water jacket 111 is changed from single-cylinder cooling to full-flow cooling to improve the heat exchange capacity of the cylinder head 110. In addition, a cooling water channel is opened inside the water jacket 111 to guide the flow of coolant.

[0083] In order to explain the technical effect of the embodiment of the present application in detail, the fire board is taken as an example to explain:

[0084] Taking the cooling water channel, water jacket, and the structural design of the fire plate in the prior art as an example, a simulation analysis is performed to obtain the simulation results. The simulation results show that the temperature at the cylinder hole can reach up to 423.5 degrees Celsius, the lowest temperature is about 88.9 degrees Celsius at the edge of the fire plate, and the temperature is concentrated near the cylinder hole, which makes it difficult to effectively reduce the temperature during the high explosion pressure operation of the diesel engine.

[0085] Taking the water jacket, cooling water channel, and structural design between the fire plates of the embodiment of the present application as an example, a simulation analysis is performed to obtain the simulation results. The simulation results show that the highest temperature at the cylinder hole is 378.6 degrees Celsius, the lowest temperature at the edge of the fire plate is 89 degrees Celsius, and the temperature analysis on the fire plate is more uniform. A comparative analysis can be performed with the simulation analysis of the above-mentioned prior art to obtain a more uniform temperature distribution of the fire plate of the embodiment of the present application, which reduces the possibility of local overheating and helps to improve the reliability and durability of the diesel engine.

[0086] Similarly, take the force analysis of the fire plate and the lower cylinder block as an example to analyze:

[0087] Taking the embodiment of the present application as an example, a stress simulation analysis is performed to obtain simulation results. The simulation results include three types, namely, the simulation results of bolt preload, the simulation results of bolt preload and high temperature conditions, and the simulation results of bolt preload, high temperature conditions and explosion pressure conditions.

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

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

[0090] The simulation results of bolt preload, high temperature conditions and explosion pressure conditions: The simulation results indicate that the working pressure is between 1.95MPa and 872.84Mpa.

[0091] From various simulation situations, the diesel engine design provided in the embodiment of the present application can withstand a maximum pressure of more than 870 MPa, which effectively improves the rigidity and strength of the diesel engine.

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

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

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

[0095] Specifically, a plurality of first bolt holes are provided on the lower end surface of the cylinder head 110 and the upper end surface of the cylinder block 120 , and the shapes of the first bolt holes are adapted to the first bolts.

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

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

[0098] Figure 4 Schematic diagram of the cylinder assembly provided in the embodiment of the present application. Figure 4 As shown, the cylinder block 120 and the main bearing cap 140 are sealedly connected.

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

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

[0101] The main bearing cap 140 and the cylinder block 120 are sealed and connected by a plurality of second bolts and a plurality of second cylinder gaskets.

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

[0103] like Figure 4 As shown, the main bearing cap 140 is installed below the cylinder block 120 , and a plurality of second bolt holes are formed on the main bearing cap 140 , and the second bolt holes are adapted to the second bolts.

[0104] The main bearing cap 140 and the cylinder block 120 are sealed and connected via a plurality of second bolt holes, a plurality of second bolts, and a plurality of second cylinder gaskets.

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

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

[0107] The cooling water channel is used to guide the flow of coolant;

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

[0109] Specifically, if Figure 4 As shown, a plurality of cylinder holes 121 are provided on the cylinder block 120, and a cooling water channel is also provided on the cylinder block 120, and the cooling water channel is located inside the water jacket 111. The cooling water channel is used to guide the flow of coolant, and the cooling water channel surrounds each cylinder hole, which helps to reduce the temperature of the diesel engine. The cooling water channel of the cylinder head 110 and the cooling water channel of the cylinder block 120 are interconnected, and together constitute a part of the diesel engine cooling system.

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

[0111] To explain the technical effect of the embodiment of the present application in detail, the cylinder block and the main bearing cap are taken as an example for analysis:

[0112] Taking the structural design of the cylinder block and the main bearing cap in the prior art as an example, a simulation analysis was performed to obtain the simulation results. 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 hole, and is limited to the vicinity of the cylinder hole, and there is a problem of local overheating.

[0113] Taking the structural design of the cylinder block and main bearing cap of the embodiment of the present application as an example, a simulation analysis is performed to obtain the simulation results. The simulation results indicate that the temperature variation range of the cylinder block is 88 degrees to 254 degrees, and the maximum temperature is significantly reduced by about 40 degrees. The cooling system can effectively reduce the temperature of the cylinder block.

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

[0115] In a possible design, the main bearing cap 140 is made by a fracturing process;

[0116] The cylinder head 110 and the cylinder block 120 are both made of compacted graphite cast iron.

[0117] Specifically, the main bearing cap 140 is manufactured by adopting an expansion and breaking process.

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

[0119] The technical effect provided by this embodiment is that the main bearing cap is refined by the expansion and breaking process, and the housing ensures that the bearing positioning is more accurate and safe, effectively reducing bearing wear. The tensile strength and fatigue resistance of the cylinder block and cylinder head can be improved by using vermicular cast iron material, effectively providing a high explosion pressure operating environment.

[0120] Figure 5 Schematic diagram of the rear end gear train provided in the embodiment of the present application. Figure 5 As shown, in one possible design, the rear end 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; the camshaft gear 132 and the air compressor gear 133 are both used to perform work externally.

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

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

[0124] The camshaft gear 132 and the air compressor gear 133 both drive corresponding devices to perform external work. The camshaft gear 132 is arranged in an overhead camshaft.

[0125] The technical effect provided by this embodiment is that the corresponding equipment is driven by the meshing mode of multiple gear brackets, which reduces energy consumption and can effectively reduce the fuel consumption rate. The camshaft type adopts an overhead camshaft arrangement to improve the rigidity and working 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 meshing with the crankshaft gear 131 , and a second intermediate gear 1342 coaxially arranged 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 are meshed one by one; the second intermediate gear 1342, the second transition gear 1345, the third transition gear 1346 and the camshaft gear 132 are meshed one by one.

[0129] Specifically, the gear set includes an intermediate gear set and a 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 coaxially arranged and share a gear shaft.

[0131] The first intermediate gear 1341 is meshed with the crankshaft gear 131 , and the second intermediate gear 1342 is meshed with the transition gear set. The diameter of the first intermediate gear 1341 is greater 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 transition gear 1344 is meshed with the second intermediate gear 1342 , the first transition gear 1344 is meshed with the second transition gear 1345 , and the second transition gear 1345 is meshed with the camshaft gear 132 , so that the camshaft gear 132 obtains power to drive the valve mechanism.

[0134] The third transition gear 1346 is meshed with the first intermediate gear 1341 , and the third transition gear 1346 is meshed with the air compressor gear 133 , so that 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 energy consumption is reduced through the meshing method between multiple intermediate gears and transition gears, which can effectively reduce the fuel consumption rate.

[0136] The present application provides a diesel engine driven device, comprising:

[0137] A valve mechanism, an air compressor, and a diesel engine for driving the valve mechanism and the air compressor, such as the above-mentioned embodiment.

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

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

[0140] The technical effect provided by this embodiment is similar to that of the diesel engine in the above-mentioned embodiment, and will not be described in detail in this embodiment.

[0141] The present application provides a diesel engine assembly, comprising:

[0142] A diesel engine assembly body, and a diesel engine driving device for driving the diesel engine assembly body, such as the diesel engine driving device of the above embodiment.

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

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

[0145] The technical effect provided by this embodiment is similar to that of the diesel engine in the above-mentioned embodiment, and will not be described in detail in this embodiment.

[0146] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A diesel engine, characterized in that: include: A cylinder head (110), a cylinder block (120) and a rear end gear train (130); The cylinder body (120) is provided with a plurality of cylinder holes (121); The cylinder head (110) is mounted above the cylinder body (120); an intake duct and an exhaust duct are provided on the cylinder head (110); the intake duct and the exhaust duct are both in communication with at least one cylinder hole (121); the intake duct is used to guide air into at least one cylinder hole (121), and the exhaust duct is used to discharge exhaust gas from at least one cylinder hole (121); The rear end gear train (130) is installed behind the cylinder head (110) and the cylinder body (120), and the rear end gear train (130) is used to perform work externally.

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) is a hollow structure, the water jacket (111) is sleeved inside the air intake pipe and the exhaust pipe, and the water jacket (111) is used to guide the flow of coolant; The fire plate is arranged between the cylinder head (110) and the cylinder body (120).

3. The diesel engine according to claim 2, characterized in that: The lower end surface of the cylinder head (110) and the upper end surface of the cylinder body (120) are both provided with a plurality of first bolt holes corresponding to the plurality of first bolts; The cylinder head (110) and the cylinder body (120) are sealingly connected via 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 further comprises a main bearing cap (140); The main bearing cap (140) is installed below the cylinder block (120), and the upper end surface of the main bearing cap (140) and the lower end surface of the cylinder block (120) are both provided with a plurality of second bolt holes corresponding to the plurality of second bolts; The main bearing cap (140) and the cylinder block (120) are sealingly connected via 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 body (120) is also provided with a cooling water channel arranged around each cylinder hole (121); The cooling water channel is used to guide the flow of coolant; The lower end surface of the cylinder block (120) is also provided with an arch structure, and the arch structure is used to increase the strength of the diesel engine.

6. The diesel engine according to claim 4, characterized in that: The main bearing cap (140) is manufactured using an expansion and breaking process; The cylinder head (110) and the cylinder body (120) are both made of compacted graphite cast iron.

7. The diesel engine according to claim 1, characterized in that: The rear end gear train (130) comprises 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; the camshaft gear (132) and the air compressor gear (133) are both used to perform work externally.

8. The diesel engine according to claim 7, characterized in that: The gear set includes an intermediate gear set and a transition gear set; The intermediate gear set comprises a first intermediate gear (1341) meshing with the crankshaft gear (131), and a second intermediate gear (1342) coaxially arranged with and fixedly connected to the first intermediate gear (1341); The transition gear set comprises 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) are meshed one by one; the second intermediate gear (1342), the second transition gear (1345), the third transition gear (1346) and the camshaft gear (132) are meshed one by one.

9. A diesel engine driven device, characterized in that: include: A valve train, an air compressor, and a diesel engine according to any one of claims 1 to 8 for driving the valve train and the air compressor.

10. A diesel engine assembly, characterized in that: include: A diesel engine assembly body, and a diesel engine driving device as claimed in claim 9 for driving the diesel engine assembly body.

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