CN210564698U - Engine lubricating system and engine - Google Patents
Engine lubricating system and engine Download PDFInfo
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- CN210564698U CN210564698U CN201921626758.0U CN201921626758U CN210564698U CN 210564698 U CN210564698 U CN 210564698U CN 201921626758 U CN201921626758 U CN 201921626758U CN 210564698 U CN210564698 U CN 210564698U
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Abstract
The utility model belongs to the field of engines, and discloses an engine lubricating system and an engine, wherein the method comprises a crankcase, a crankshaft is arranged in the crankcase, and a crankshaft main oil duct is arranged in the crankshaft; the side cover is arranged on one side of the crankcase, and a dark oil duct is arranged in the side cover; the bridging mechanism comprises a sleeve and a sealing part, the sealing part is fixedly arranged on the outer side wall of the sleeve, one end of the sleeve is inserted into the outlet of the dark oil duct, and the sealing part is positioned outside the outlet of the dark oil duct; when the engine works, the sleeve moves towards the inlet of the crankshaft main oil gallery under the pressure action of high-pressure oil in the dark oil gallery, so that the sealing part is pressed on the end surface of the inlet of the crankshaft main oil gallery to hermetically connect the outlet of the dark oil gallery and the inlet of the crankshaft main oil gallery, and high-pressure oil in the dark oil gallery enters the crankshaft main oil gallery through the sleeve. The utility model discloses a lubricating oil duct circuit can be shortened to lubricating system for need not to increase engine oil pump flow and oil pressure, with the reduction tube explosion probability.
Description
Technical Field
The utility model belongs to the technical field of the engine, in particular to engine lubrication system and engine.
Background
In an engine, a lubrication system is a very critical system, and the quality of the lubrication system directly determines the service life of the whole engine. At present, most of lubricating oil ways of engines adopt an external transition mode to realize reasonable allocation of lubricating oil of the whole engine. The lubricating oil path is externally connected with a front-mounted design of an oil pump and a rear-mounted design of the oil pump, when the oil pump is arranged in front, the lubricating oil path line of the crankshaft connecting rod neck is long, and the lubricating oil path needs to bypass the machine body and the side cover so as to introduce lubricating oil into the crankshaft lubricating oil path. When the lubricating oil way is long, the loss of oil pressure is large, the requirement on the transitional connection quality of the lubricating oil pipe is high, and in order to guarantee the normal supply of the lubricating oil quantity, most engine designers adopt the modes of increasing the flow of an engine oil pump, increasing the oil pressure of the lubricating oil and the like so as to achieve the sufficient lubricating effect. However, increasing the oil pump flow and increasing the oil pressure of the lubricating oil may cause the engine to lose oil by sudden pipe explosion, which may significantly threaten the service life of the entire engine.
Disclosure of Invention
The utility model aims at providing an engine lubrication system and engine can shorten lubricating oil duct circuit for need not to increase engine oil pump flow and oil pressure, in order to reduce the tube burst probability.
The utility model provides a technical scheme as follows:
in one aspect, an engine lubrication system is provided, comprising:
the crankshaft is arranged in the crankcase, and a crankshaft main oil gallery is arranged in the crankshaft;
the side cover is arranged on one side of the crankcase, a dark oil passage is arranged in the side cover, and an outlet of the dark oil passage is arranged corresponding to an inlet of the crankshaft main oil passage and is provided with a gap;
the bridging mechanism comprises a sleeve and a sealing part, the sealing part is fixedly arranged on the outer side wall of the sleeve, one end of the sleeve is inserted into the outlet of the dark oil duct, and the sealing part is positioned outside the outlet of the dark oil duct;
when the engine works, the sleeve moves towards the inlet of the crankshaft main oil gallery under the action of oil pressure in the dark oil gallery, so that the sealing part is pressed on the end face of the inlet of the crankshaft main oil gallery to hermetically connect the outlet of the dark oil gallery and the inlet of the crankshaft main oil gallery, and high-pressure oil in the dark oil gallery enters the crankshaft main oil gallery through the sleeve.
Further preferably, one end of the sleeve is inserted into the outlet of the dark oil passage;
the sealing portion is located at the end of the other end of the sleeve.
Further preferably, the sealing portion is located between two end portions of the sleeve;
one end of the sleeve is inserted into an outlet of the dark oil passage;
and the other end of the sleeve is inserted into an inlet of the crankshaft main oil gallery.
Further preferably, the method further comprises the following steps:
and the sealing ring is arranged between the outer wall of the sleeve and the inner wall of the dark oil duct.
Further preferably, the method further comprises the following steps:
and the oil pump is arranged on the side cover, and an oil outlet of the oil pump is communicated with the inlet of the dark oil duct.
Further preferably, the method further comprises the following steps:
and the engine oil filter is arranged on the side cover, the inlet of the engine oil filter is communicated with the oil pan, and the outlet of the engine oil filter is communicated with the oil inlet of the engine oil pump.
Further preferably, the oil filter is disposed below the oil pump;
and the side cover is also provided with a dark oil duct which is communicated with the outlet of the engine oil filter and the oil inlet of the engine oil pump.
Further preferably, the dark oil passage includes a vertical oil passage and a first horizontal oil passage;
the crankshaft main oil gallery comprises a second horizontal oil gallery;
an inlet of the vertical oil duct is communicated with an oil outlet of the oil pump;
an outlet of the vertical oil duct is communicated with an inlet of the first horizontal oil duct;
the outlet of the first horizontal oil passage is communicated with the inlet of the second horizontal oil passage through the bridging mechanism.
Further preferably, the crankshaft connecting rod journal oil passage is further included;
the crankshaft main oil passage further comprises an inclined oil passage which forms an angle with the second horizontal oil passage;
and the crankshaft connecting rod journal oil passage is communicated with an outlet of the second horizontal oil passage through the inclined oil passage.
In another aspect, an engine is also provided, which comprises the engine lubricating system.
Compared with the prior art, the utility model provides a pair of engine lubrication system and engine has following beneficial effect: the utility model can avoid bypassing the side cover and the machine body by processing the hidden oil duct inside the side cover, so as to shorten the lubricating circuit; the outlet of the dark oil duct is opposite to the inlet of the crankshaft main oil duct, a bridging mechanism is innovatively arranged between the outlet of the dark oil duct and the inlet of the crankshaft main oil duct, the bridging mechanism is skillfully arranged, and high-pressure oil in the dark oil duct can be introduced into the crankshaft main oil duct through the bridging mechanism to lubricate a crankshaft connecting rod journal; due to the reasonable arrangement of the oil duct and the bridging mechanism arranged in the channel, the crankshaft connecting rod journal is lubricated on the basis of simple structure, the lubricating oil duct line is shortened, the number of oil drainage points is reduced, and the oil leakage risk is reduced; meanwhile, the flow and the oil pressure of an engine oil pump do not need to be increased, and the probability of tube explosion is reduced.
Drawings
The above features, technical features, advantages and implementations of an engine lubrication system and engine will be further described in the following detailed description of preferred embodiments in a clearly understandable manner, in conjunction with the accompanying drawings.
FIG. 1 is a cross-sectional view of an embodiment of an engine lubrication system of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1 when the engine is not in operation;
FIG. 3 is an enlarged view at A of FIG. 1 with the engine operating;
FIG. 4 is a cross-sectional view of another embodiment of an engine lubrication system
FIG. 5 is an enlarged view at B in FIG. 4 when the engine is not in operation;
fig. 6 is an enlarged view at B in fig. 4 when the engine is operating.
Description of the reference numerals
1. A crankcase; 2. a side cover; 21. a dark oil duct; 211. a vertical oil passage; 212. a first horizontal oil passage; 3. a crankshaft; 31. a crankshaft main oil gallery; 311. a second horizontal oil passage; 312. an inclined oil duct; 41. a sleeve; 42. a sealing part; 5. a seal ring; 6. an oil pump; 7. an engine oil filter; 8. crankshaft connecting rod journal oil duct.
Detailed Description
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
The embodiment of the present invention provides an engine lubrication system, please refer to fig. 1 and 4, which includes a crankcase 1, a side cover 2 and a bridging mechanism. The crankshaft 3 is arranged in the crankcase 1, the crankshaft main oil gallery 31 is arranged in the crankshaft 3, and lubricating oil in the crankshaft main oil gallery 31 flows to a crankshaft connecting rod lubricating connecting rod journal.
The side cover 2 is provided at one side of the crankcase 1, and since the crankshaft 3 is always in a rotating state during the operation of the engine, there is a gap between the side cover 2 and the crankshaft 3 when the side cover 2 is assembled. A dark oil passage 21 is provided in the side cover 2, and an outlet of the dark oil passage 21 is provided corresponding to an inlet of the crankshaft main oil passage 31 with a gap.
The bridging mechanism includes a sleeve 41 and a sealing portion 42, the sealing portion 42 is fixedly disposed on an outer sidewall of the sleeve 41, one end of the sleeve 41 is inserted into an outlet of the dark oil passage 21 and slidably disposed with respect to the dark oil passage 21, and the sealing portion 42 is located outside the outlet of the dark oil passage 21.
When the engine is in operation, the sleeve 41 moves towards the inlet of the crankshaft main oil gallery 31 under the pressure of the high-pressure oil in the dark oil gallery 21, so that the sealing part 42 is pressed on the inlet end face of the crankshaft main oil gallery 31 to hermetically connect the outlet of the dark oil gallery 21 and the inlet of the crankshaft main oil gallery 31, and the high-pressure oil in the dark oil gallery 21 enters the crankshaft main oil gallery 31 through the sleeve 41. When the crankshaft 3 rotates, the bridging mechanism is driven by the crankshaft 3 to rotate along with the crankshaft 3, and the sealing part 42 and the crankshaft 3 do not move relatively, so that the abrasion can be reduced.
The end surface of the sleeve 41 inserted into one end of the dark oil passage 21 is a pressure bearing surface, when high-pressure oil passes through the dark oil passage 21, the high-pressure oil acts on the pressure bearing surface of the sleeve 41, so that the sleeve 41 slides towards the flowing direction of the high-pressure oil under the action of high-pressure oil pressure, namely moves towards the inlet of the crankshaft main oil passage 31, and the sealing part 42 is pressed on the inlet end surface of the crankshaft main oil passage 31, so that the sealing performance of the bridging mechanism and the crankshaft 3 is improved, and the leakage of the high-pressure oil in the forward flowing process is prevented.
In the embodiment, the dark oil passage 21 is processed in the side cover 2, so that the side cover 2 and the machine body can be prevented from being bypassed, and a lubricating circuit can be shortened; the outlet of the dark oil passage 21 is arranged opposite to the inlet of the crankshaft main oil passage 31, a bridging mechanism is arranged between the outlet of the dark oil passage 21 and the inlet of the crankshaft main oil passage 31, and high-pressure oil in the dark oil passage 21 can be introduced into the crankshaft main oil passage 31 through the bridging mechanism to lubricate a crankshaft connecting rod journal; due to the reasonable arrangement of the oil duct and the bridging mechanism arranged in the channel, not only is the crankshaft connecting rod journal lubricated, but also the lubricating oil duct line is shortened, the number of oil drainage points is reduced, and the oil leakage risk is reduced; meanwhile, the flow and the oil pressure of an engine oil pump do not need to be increased, and the probability of tube explosion is reduced.
In one embodiment, referring to fig. 1 to 3, one end of the sleeve 41 is inserted into the outlet of the dark oil passage 21; the seal portion 42 is located at the end of the other end of the sleeve 41. The sleeve 41 is inserted into one end of the dark oil gallery 21, so that the sealing part 42 on the other end of the sleeve 41 is abutted against the end part of the inlet of the crankshaft main oil gallery 31 under the action of high-pressure oil, the sealed connection between the dark oil gallery 21 and the crankshaft main oil gallery 31 is realized through the sleeve 41 and the sealing part 42, and the high-pressure oil in the dark oil gallery 21 enters the crankshaft main oil gallery 31 through the bridging mechanism, so that the crankshaft connecting rod journal is lubricated.
A sealing ring 5 is further arranged between the outer wall of the sleeve 41 and the inner wall of the dark oil passage 21. When the sealing portion 42 on the outer side wall of the sleeve 41 is pressed against the inlet end face of the crankshaft main oil gallery 31, a gap is formed between the sealing portion 42 and the outlet end face of the dark oil gallery 21, and sealing between the bridging mechanism and the dark oil gallery 21 is not achieved by the sealing portion 42, so that high-pressure oil can be prevented from leaking between the outer wall of the sleeve 41 and the inner wall of the dark oil gallery 21 by providing the seal ring 5 between the outer wall of the sleeve 41 and the inner wall of the dark oil gallery 21.
In one embodiment, referring to fig. 4-6, the seal 42 is located between two ends of the sleeve 41; one end of the sleeve 41 is inserted into the outlet of the dark oil passage 21; the other end of the sleeve 41 is inserted into the inlet of the crankshaft main oil gallery 31. One end of the sleeve 41 is inserted into the dark oil passage 21, and the other end of the sleeve 41 is inserted into the main oil passage 31 of the crankshaft, so that when the sleeve 41 is stuck and cannot move, the sleeve 41 can still play a role of bridging, high-pressure oil in the dark oil passage 21 enters the main oil passage 31 of the crankshaft through the sleeve 41, and an oil leakage phenomenon is prevented.
A sealing ring 5 is further disposed between the outer wall of the sleeve 41 located in the dark oil passage 21 and the inner wall of the dark oil passage 21. When the sealing portion 42 on the outer side wall of the sleeve 41 is pressed against the inlet end face of the crankshaft main oil gallery 31, a gap is formed between the sealing portion 42 and the outlet end face of the dark oil gallery 21, and sealing between the bridging mechanism and the dark oil gallery 21 is not achieved by the sealing portion 42, so that high-pressure oil can be prevented from leaking between the outer wall of the sleeve 41 and the inner wall of the dark oil gallery 21 by providing the seal ring 5 between the outer wall of the sleeve 41 and the inner wall of the dark oil gallery 21.
A sealing ring is also arranged between the outer wall of the sleeve 41 in the main oil gallery 31 of the crankshaft and the inner wall of the main oil gallery 31 of the crankshaft, and when the sleeve 41 is clamped and is incapable of moving towards the inlet of the main oil gallery 31 of the crankshaft under the pressure action of high-pressure oil and further incapable of pressing the inlet end part of the main oil gallery 31 of the crankshaft through the sealing part 42 to play a sealing role, the sealing ring can play a sealing role to prevent oil leakage.
In one embodiment, referring to fig. 1 and 4, the engine lubrication system further includes an oil pump 6 disposed on the side cover 2, and an oil outlet of the oil pump 6 is disposed in communication with an inlet of the dark oil passage 21. The oil pump 6 is provided on the side cover 2, and the dark oil passage 21 is also provided in the side cover 2, so that the lubrication oil line can be further shortened.
The engine lubricating system further comprises an engine oil filter 7 arranged on the side cover 2, an inlet of the engine oil filter 7 is used for being communicated with an oil pan, and an outlet of the engine oil filter 7 is communicated with an oil inlet of the engine oil pump 6. The oil filter 7 is used to filter the lubricating oil in the oil pan to ensure the cleanliness of the lubricating oil. The oil filter 7 and the oil pump 6 are both provided on the side cover 2, and a lubricating oil line can be shortened.
The engine oil filter 7 is arranged below the engine oil pump 6; the side cover 2 is also provided with a dark oil passage for communicating the outlet of the engine oil filter 7 with the oil inlet of the engine oil pump 6. The side cover 2 is directly provided with a dark oil duct which is communicated with the outlet of the engine oil filter 7 and the oil inlet of the engine oil pump 6, and an external transition oil pipe is not needed, so that the number of oil drainage points is reduced, and the oil leakage risk is reduced.
In one embodiment, referring to fig. 1 and 4, the dark oil passage 21 includes a vertical oil passage 211 and a first horizontal oil passage 212; the crankshaft main oil gallery 31 includes a second horizontal oil gallery 311; an inlet of the vertical oil passage 211 is communicated with an oil outlet of the oil pump 6; an outlet of the vertical oil passage 211 is communicated with an inlet of the first horizontal oil passage 212; the outlet of the first horizontal oil passage 212 is provided in communication with the inlet of the second horizontal oil passage 311 through a bridge mechanism.
The dark oil passage 21 includes a vertical oil passage 211 and a first horizontal oil passage 212, the first horizontal oil passage 212 is communicated with the second horizontal oil passage 311 through a bridging mechanism, that is, the horizontal oil passage is bridged with the horizontal oil passage, an outlet of the first horizontal oil passage 212 is arranged opposite to an inlet of the second horizontal oil passage 311, that is, the outlet of the first horizontal oil passage 212 and the inlet of the second horizontal oil passage 311 are at the same height, and when the first horizontal oil passage and the second horizontal oil passage are bridged through the bridging mechanism, the difficulty of oil passage bridging can be reduced.
The engine lubrication system further comprises a crankshaft connecting rod journal oil passage 8, and the crankshaft main oil passage 31 comprises a second horizontal oil passage 311 and an inclined oil passage 312 which forms an angle with the second horizontal oil passage 311; the crank journal oil passage 8 is provided in communication with an outlet of the second horizontal oil passage 311 through a slant oil passage 312. The lubricating oil in the main oil gallery 31 of the crankshaft enters the crankshaft connecting rod journal oil gallery 8 through the inclined oil gallery 312 to lubricate the crankshaft connecting rod journal.
The embodiment of the present invention further provides an engine, please refer to fig. 1 to 6, including the engine lubrication system of any one of the above embodiments. The engine lubricating system can avoid bypassing the side cover 2 and the engine body by processing the dark oil passage 21 in the side cover 2 so as to shorten a lubricating circuit; the outlet of the dark oil passage 21 is arranged opposite to the inlet of the crankshaft main oil passage 31, a bridging mechanism is arranged between the outlet of the dark oil passage 21 and the inlet of the crankshaft main oil passage 31, and high-pressure oil in the dark oil passage 21 can be introduced into the crankshaft main oil passage 31 through the bridging mechanism to lubricate a crankshaft connecting rod journal; the reasonable arrangement of the oil duct and the bridging mechanism arranged in the channel not only realizes the lubrication of the crankshaft connecting rod journal, but also shortens the lubrication line, reduces the number of oil drainage points and reduces the oil leakage risk; meanwhile, the flow and the oil pressure of the oil pump 6 do not need to be increased, and the probability of pipe explosion is reduced.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An engine lubrication system, comprising:
the crankshaft is arranged in the crankcase, and a crankshaft main oil gallery is arranged in the crankshaft;
the side cover is arranged on one side of the crankcase, a dark oil passage is arranged in the side cover, and an outlet of the dark oil passage is arranged corresponding to an inlet of the crankshaft main oil passage and is provided with a gap;
the bridging mechanism comprises a sleeve and a sealing part, the sealing part is fixedly arranged on the outer side wall of the sleeve, one end of the sleeve is inserted into the outlet of the dark oil duct, and the sealing part is positioned outside the outlet of the dark oil duct;
when the engine works, the sleeve moves towards the inlet of the crankshaft main oil gallery under the action of oil pressure in the dark oil gallery, so that the sealing part is pressed on the end face of the inlet of the crankshaft main oil gallery to hermetically connect the outlet of the dark oil gallery and the inlet of the crankshaft main oil gallery, and high-pressure oil in the dark oil gallery enters the crankshaft main oil gallery through the sleeve.
2. The engine lubrication system according to claim 1,
one end of the sleeve is inserted into an outlet of the dark oil passage;
the sealing portion is located at the end of the other end of the sleeve.
3. The engine lubrication system according to claim 1,
the sealing part is positioned between the two end parts of the sleeve;
one end of the sleeve is inserted into an outlet of the dark oil passage;
and the other end of the sleeve is inserted into an inlet of the crankshaft main oil gallery.
4. An engine lubrication system according to any one of claims 1-3,
further comprising:
and the sealing ring is arranged between the outer wall of the sleeve and the inner wall of the dark oil duct.
5. The engine lubrication system according to claim 1,
further comprising:
and the oil pump is arranged on the side cover, and an oil outlet of the oil pump is communicated with the inlet of the dark oil duct.
6. The engine lubrication system according to claim 5,
further comprising:
and the engine oil filter is arranged on the side cover, the inlet of the engine oil filter is communicated with the oil pan, and the outlet of the engine oil filter is communicated with the oil inlet of the engine oil pump.
7. The engine lubrication system according to claim 6,
the engine oil filter is arranged below the engine oil pump;
and the side cover is also provided with a dark oil duct which is communicated with the outlet of the engine oil filter and the oil inlet of the engine oil pump.
8. The engine lubrication system according to claim 1,
the dark oil passage comprises a vertical oil passage and a first horizontal oil passage;
the crankshaft main oil gallery comprises a second horizontal oil gallery;
an inlet of the vertical oil duct is communicated with an oil outlet of the oil pump;
an outlet of the vertical oil duct is communicated with an inlet of the first horizontal oil duct;
the outlet of the first horizontal oil passage is communicated with the inlet of the second horizontal oil passage through the bridging mechanism.
9. The engine lubrication system of claim 8,
the crankshaft connecting rod neck oil passage is also included;
the crankshaft main oil passage further comprises an inclined oil passage which forms an angle with the second horizontal oil passage;
and the crankshaft connecting rod journal oil passage is communicated with an outlet of the second horizontal oil passage through the inclined oil passage.
10. An engine comprising an engine lubrication system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626758.0U CN210564698U (en) | 2019-09-27 | 2019-09-27 | Engine lubricating system and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626758.0U CN210564698U (en) | 2019-09-27 | 2019-09-27 | Engine lubricating system and engine |
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| Publication Number | Publication Date |
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| CN210564698U true CN210564698U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921626758.0U Active CN210564698U (en) | 2019-09-27 | 2019-09-27 | Engine lubricating system and engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513171A (en) * | 2019-09-27 | 2019-11-29 | 江苏常发农业装备股份有限公司 | A kind of engine lubrication system and engine |
| CN114278409A (en) * | 2021-12-31 | 2022-04-05 | 潍柴动力股份有限公司 | Crankshaft front end engine oil pressurizing structure and engine |
-
2019
- 2019-09-27 CN CN201921626758.0U patent/CN210564698U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513171A (en) * | 2019-09-27 | 2019-11-29 | 江苏常发农业装备股份有限公司 | A kind of engine lubrication system and engine |
| CN114278409A (en) * | 2021-12-31 | 2022-04-05 | 潍柴动力股份有限公司 | Crankshaft front end engine oil pressurizing structure and engine |
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