CN108868954A - diesel engine side cover - Google Patents

Abstract

The invention provides a side cover of a diesel engine, which comprises a side cover body. The side cover body is provided with an oil pump shaft hole, a crankshaft shaft hole and a camshaft shaft hole in sequence from bottom to top, and an oil inlet is also arranged on the side cover body. , the first oil passage, the second oil passage, the third oil passage and the fourth oil passage, the oil inlet is connected with the inside of the diesel engine body, the two ends of the first oil passage are respectively connected with the oil inlet and the shaft hole of the oil pump, the machine The second oil passage is led outward from the shaft hole of the oil pump, the second oil passage is connected to the external radiator, one end of the third oil passage is connected to the radiator, and the other end is connected to the crankshaft shaft hole, and the third oil passage is led out The fourth oil passage is connected to the camshaft shaft hole; the first oil passage is provided with a coarse filter; the second oil passage is provided with an oil filter. By setting the sequentially connected oil passages, the lubricating oil is gradually delivered to the mechanism that needs to be lubricated, which ensures the lubricating effect of the oil pump shaft, the crankshaft and the camshaft, and improves the lubricating effect.

Description

diesel engine side cover

technical field

The invention relates to the technical field of diesel engines, in particular to a side cover of a diesel engine.

Background technique

A diesel engine is a device that converts chemical energy into mechanical energy using diesel oil as fuel. A power machine that uses a diesel engine as a prime mover to drive a generator to generate electricity. The whole unit is generally composed of diesel engine, generator, control box, fuel tank, storage battery for starting and control and other components.

During the working process, each component in the casing needs to be lubricated. The lubrication of the existing diesel engine is all driven by the gear rotation of the oil pump to shake up the oil in the cavity so as to realize the lubrication of various components such as the crankshaft and the cam. Since the centrifugal force generated on the gear is certain during the working process, the parts that are closer to the gear are better lubricated, while the parts that are far away from the gear may have poor lubrication due to the fact that the oil cannot be thrown onto it, and the lubrication of the whole machine is not balanced. , the peripheral parts are easy to wear and cause damage.

Contents of the invention

The technical problem to be solved by the invention is: in order to overcome the deficiency of unbalanced lubrication of the whole machine in the prior art, the invention provides a side cover of a diesel engine.

The technical solution adopted by the present invention to solve the technical problem is: a diesel engine side cover, including a side cover body, the side cover body is provided with an oil pump shaft hole, a crankshaft shaft hole and a camshaft shaft in sequence from bottom to top. The hole also includes the oil inlet, the first oil passage, the second oil passage, the third oil passage and the fourth oil passage arranged inside the side cover body, the oil inlet is arranged at the bottom of the side cover body, and is connected with the diesel engine The body is connected internally, the two ends of the first oil passage are respectively connected with the oil inlet and the shaft hole of the oil pump shaft, and the second oil passage is led out from the shaft hole of the oil pump, and the second oil passage is connected to To the external radiator, one end of the third oil passage is connected to the radiator, and the other end communicates with the crankshaft shaft hole, the third oil passage leads to the fourth oil passage, and the fourth oil passage is connected to the camshaft shaft hole; The bottom of the side cover body is also provided with a coarse filter installation hole communicated with the first oil passage, and a coarse filter is arranged in the coarse filter installation hole; one side of the side cover body is also provided with a A filter installation hole, an oil filter is installed in the filter installation hole.

Specifically, in order to ensure the shortest oil passage, the first oil passage is arranged vertically, and the second oil passage and the third oil passage are arranged horizontally.

Furthermore, during the working process, the internal components of the machine body will generate a large amount of heat, and the lubricating oil will be recycled, and the temperature will rise. Therefore, it is necessary to cool down and dissipate the oil. Therefore, the oil that passes through the oil pump first enters the external radiator To dissipate heat, and then return to the inside of the body for lubrication. In order to realize the communication between the radiator and the internal oil circuit of the body, it also includes a radiator oil inlet section and a radiator oil outlet section arranged outside the side cover body, one end of the radiator oil inlet section is connected to the outlet of the oil filter, and the other One end is connected to one end of the oil outlet section of the radiator through the inside of the radiator, and the other end of the oil outlet section of the radiator is connected to the third oil circuit.

Further, in order to ensure that the lubricating oil entering the camshaft hole is clean, therefore, the lubricating oil is introduced into the camshaft hole before the lubricating oil enters the crankshaft hole, therefore, the fourth oil passage is separated from the third oil It is led out on the road instead of being introduced after passing through the crankshaft hole, so as to ensure the cleanliness of the lubricating oil and ensure the lubricating effect.

Further, in order to facilitate the processing of the side cover lubrication system, the lower end of the side cover body is provided with a process port communicated with the first oil passage, and the upper end of the side cover body is provided with a process port communicated with the camshaft shaft hole through the oil passage, During assembly, the process opening is sealed with an aluminum plug.

Further, the fourth oil passage is arranged obliquely.

Preferably, the included angle between the fourth oil passage and the vertical direction is 10°-45°. In order to shorten the oil passage, make the angle between the fourth oil passage and the vertical direction as small as possible, that is, the closer the oil passage is to the crankshaft hole, the shorter the oil passage can be, and the lubrication can be performed more quickly.

working principle:

The oil in the diesel engine body enters the first oil passage through the oil inlet at the bottom of the side cover body. First, the lubricating oil needs to be filtered through the coarse filter, and then the lubricating oil is introduced into the shaft hole of the oil pump shaft through the first oil passage. Oil pump shaft, oil pump outer rotor and other components are lubricated. The lubricating oil coming out of the shaft hole of the oil pump shaft enters the oil filter through the second oil passage, and the lubricating oil is further filtered through the oil filter. The cleaned high-temperature engine oil enters the interior of the radiator through the oil inlet section of the radiator to dissipate heat, and the low-temperature engine oil after heat dissipation passes through the oil outlet section of the radiator and returns to the third oil circuit, and the clean and low-temperature engine oil entering the third oil circuit is divided into Two paths, one path enters the crankshaft shaft hole through the third oil path to lubricate the crankshaft, and the other path enters the camshaft shaft hole through the fourth oil path led from the third oil path to lubricate the camshaft, and the engine oil used for lubrication Extruded by the operation of each component, it falls back into the body of the diesel engine. At the same time, it also carries away the heat generated by the operation of the components, and at the same time plays the role of lubrication and heat dissipation. The overall lubricating system transports the lubricating oil along the oil circuit through the power components, which can ensure that each component can be well lubricated.

The beneficial effect of the present invention is that: the side cover of a diesel engine provided by the present invention can gradually transport the lubricating oil to the mechanism that needs lubrication by setting the sequentially connected oil passages, thereby ensuring the lubrication of the oil pump shaft, the crankshaft and the camshaft Role, improve the lubrication effect.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 3 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 4 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 5 is a schematic diagram of the flow direction of lubricating oil.

In the figure: 1. Side cover body, 2. Oil inlet, 3. Process port, 4. Oil pump shaft hole, 5. Crankshaft shaft hole, 6. Camshaft shaft hole, 7. First oil passage, 8. The second oil circuit, 9, the fourth oil circuit, 10, the oil filter, 11, the third oil circuit, 12, the radiator, 13, the cooling outlet, 14, the installation connection hole, 15, the reinforcing rib, 16, the filter Cleaner mounting hole, 17, coarse filter mounting hole, 18, coarse filter, 19, radiator oil inlet section, 20, radiator oil outlet section.

Detailed ways

The present invention will be described in detail in conjunction with accompanying drawing now. This figure is a simplified schematic diagram only illustrating the basic structure of the present invention in a schematic manner, so it only shows the components relevant to the present invention.

As shown in Figures 1-4, a diesel engine side cover of the present invention includes a side cover body 1, and the side cover body 1 is sequentially provided with an oil pump shaft hole 4, a crankshaft shaft hole 5 and The camshaft shaft hole 6 also includes an oil inlet 2, a first oil passage 7, a second oil passage 8, a third oil passage 11 and a fourth oil passage 9 arranged inside the side cover body 1, the oil inlet 2 is arranged at the bottom of side cover body 1 and communicates with the inside of the diesel engine body. The second oil passage 8 is drawn out, and the second oil passage 8 is connected to the external radiator 12. One end of the third oil passage 11 is connected to the radiator 12, and the other end communicates with the crankshaft hole 5. The first The third oil passage 11 leads to the fourth oil passage 9, and the fourth oil passage 9 is connected to the camshaft shaft hole 6; the bottom of the side cover body 1 is also provided with a coarse filter installation hole 17 communicating with the first oil passage 7 , the coarse filter installation hole 17 is provided with a coarse filter 18; the side cover body 1 is also provided with a filter installation hole 16 communicating with the second oil passage 8, and the filter installation hole 16 is Install the oil filter 10.

During the working process, the internal components of the machine body will generate a lot of heat, and the lubricating oil will be recycled, and the temperature will rise. Therefore, it is necessary to cool down and heat the oil. Therefore, the oil that passes through the oil pump first enters the external radiator 12 for cooling. Dissipates heat before returning to the interior of the body for lubrication. In order to realize the communication between the radiator 12 and the internal oil circuit of the machine body, it also includes a radiator oil inlet section 19 and a radiator oil outlet section 20 arranged outside the side cover body 1. One end of the radiator oil inlet section 19 is connected to the oil filter The outlet of the radiator 10, the other end is connected to one end of the oil outlet section 20 of the radiator through the interior of the radiator 12, and the other end of the oil outlet section 20 of the radiator is connected to the third oil passage 11.

The first oil passage 7 is vertically arranged and connected to the shaft hole 4 of the oil pump. The left side of the shaft hole 4 of the oil pump leads horizontally to the left from the second oil passage 8, which is connected to the inlet of the oil filter 10. The outlet of the oil filter 10 is connected to the oil inlet section 19 of the radiator, and enters the inside of the radiator 12 to dissipate heat. The end of the road 11 is connected to the crank shaft hole 5; and the fourth oil road 9 that forms a certain angle with the vertical direction is drawn on the third oil road 11, and the angle between the fourth oil road 9 and the vertical direction is 10°-45°, preferably 30° in this embodiment. In order to facilitate the processing of the side cover lubrication system, the lower end of the side cover body 1 is provided with a process port 3 communicated with the first oil passage 7, and the upper end of the side cover body 1 is provided with a port 3 communicated with the camshaft shaft hole 6 through the oil passage. The process port 3 is sealed with an aluminum plug during assembly. The side cover body 1 on the left and right sides of the first oil passage 7 is also provided with a heat dissipation outlet 13 communicating with the heat dissipation hole on the machine body. The outer edge of the side cover body 1 is provided with a plurality of installation connection holes 14 along the circumference, and the side cover can be installed on the body by bolts. A plurality of reinforcing ribs 15 are also provided on the inner side of the side cover body 1 to improve the connection strength and the stability of the oil circuit.

working principle:

As shown in Figure 5, the engine oil in the diesel engine body enters the first oil passage 7 through the oil inlet 2 at the bottom of the side cover body 1. The oil is introduced into the shaft hole 4 of the oil pump to lubricate the oil pump shaft, the outer rotor of the oil pump and other components, and the lubricating oil coming out of the shaft hole 4 of the oil pump enters the oil filter 10 through the second oil passage 8 , the lubricating oil is further filtered through the oil filter 10. After cleaning, the high-temperature engine oil enters the inside of the radiator 12 through the radiator oil inlet section 19 to dissipate heat, and the low-temperature engine oil after cooling passes through the radiator oil outlet section 20 and returns to In the third oil passage 11, the lubricating oil that enters the third oil passage 11 is divided into two paths, one path enters the crankshaft shaft hole 5 through the third oil path 11 to lubricate the crankshaft, and the other path passes through the third oil path 11 to lubricate the crankshaft. The fourth oil passage 9 enters the camshaft shaft hole 6 to lubricate the camshaft. The oil used for lubrication is squeezed by the operation of each component, and then falls back into the body of the diesel engine. At the same time, it also carries away the heat generated by the operation of the components. At the same time play the role of lubrication and heat dissipation. The overall lubricating system transports the lubricating oil along the oil circuit through the power components, which can ensure that each component can be well lubricated.

Arrows in Figure 5 indicate the flow of lubricating oil.

Inspired by the ideal embodiment according to the present invention, through the above description, relevant workers can make various changes and modifications without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims (7)

1. a kind of diesel engine side cover, including side cover ontology, it is successively arranged machine oil pump shaft from top to bottom on the side cover ontology Axis hole, crankshaft axis hole and camshaft shaft hole, it is characterised in that：It further include oil inlet, the first oil being arranged on the inside of side cover ontology Road, the second oil circuit, third oil circuit and the 4th oil circuit, the oil inlet are arranged in side cover body bottom portion, and in diesel-engine body Portion's connection, first oil circuit both ends are connected to oil inlet and machine oil pump shaft axis hole respectively, on the machine oil pump shaft axis hole outward Second oil circuit, second oil circuit connection to external heat sink are drawn, third oil circuit one end is connected to radiator, separately One end is connected to crankshaft axis hole, and the 4th oil circuit, the 4th oil communication to camshaft shaft hole are drawn on the third oil circuit；Institute It states side cover body bottom portion and is additionally provided with coarse filtration mounting hole with the first oil communication, be equipped with coarse filter in the coarse filtration mounting hole；Institute It states side cover ontology side and is additionally provided with filter mounting hole with the second oil communication, organic oil is installed in the filter mounting hole Filter.

2. diesel engine side cover as described in claim 1, it is characterised in that：The first oil circuit vertical direction setting, institute It states the second oil circuit and third oil circuit is horizontally disposed.

3. diesel engine side cover as described in claim 1, it is characterised in that：It further include that dissipating for side cover body exterior is set Hot device oil inlet section and fuel-displaced section of radiator, the outlet of radiator oil inlet section one end connection oil filter, the other end is through dissipating Hot device is connected internally to fuel-displaced section of radiator one end, and fuel-displaced section of other end of the radiator is connected to third oil circuit.

4. diesel engine side cover as claimed in claim 3, it is characterised in that：4th oil circuit draws from third oil circuit Out.

5. diesel engine side cover as described in claim 1, it is characterised in that：Side cover ontology lower end is equipped with and the first oil The technique mouth of road connection, side cover ontology upper end are equipped with the technique mouth being connected to camshaft shaft hole by oil circuit, when assembly, institute Stating to block on technique mouth has aluminium stifled.

6. diesel engine side cover as described in claim 1, it is characterised in that：4th oil circuit is obliquely installed.

7. diesel engine side cover as claimed in claim 6, it is characterised in that：The angle of 4th oil circuit and vertical direction It is 10 ° -45 °.