CN110513171B - Engine lubricating system and engine - Google Patents
Engine lubricating system and engine Download PDFInfo
- Publication number
- CN110513171B CN110513171B CN201910924336.XA CN201910924336A CN110513171B CN 110513171 B CN110513171 B CN 110513171B CN 201910924336 A CN201910924336 A CN 201910924336A CN 110513171 B CN110513171 B CN 110513171B
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- oil duct
- oil
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- sleeve
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- 230000001050 lubricating effect Effects 0.000 title abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 284
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000005461 lubrication Methods 0.000 claims description 28
- 239000010705 motor oil Substances 0.000 claims description 25
- 239000010687 lubricating oil Substances 0.000 abstract description 17
- 238000004880 explosion Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/14—Features relating to lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
- F01M2001/062—Crankshaft with passageways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
- F01M2011/027—Arrangements of lubricant conduits for lubricating connecting rod bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention belongs to the field of engines, and discloses an engine lubricating system and an engine, wherein the method comprises a crankcase, wherein 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 an 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 main crankshaft oil duct under the pressure action of high-pressure oil in the dark oil duct, so that the sealing part is pressed on the end face of the inlet of the main crankshaft oil duct to be in sealing connection with the outlet of the dark oil duct and the inlet of the main crankshaft oil duct, and the high-pressure oil in the dark oil duct enters the main crankshaft oil duct through the sleeve. The lubricating system can shorten the lubricating oil duct line, so that the flow rate and the oil pressure of the oil pump do not need to be increased, and the pipe explosion probability is reduced.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to an engine lubricating system and an 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, the lubricating oil way of the engine mostly adopts an external transition mode so as to realize reasonable allocation of the lubricating oil of the whole engine. When the oil pump is arranged in front, the crankshaft connecting rod neck lubricating oil path is longer, and the engine body and the side cover need to be bypassed so as to introduce lubricating oil into the crankshaft lubricating oil path. When the lubricating oil way is longer, the loss of oil pressure is larger, the transitional connection quality requirement on the lubricating oil pipe is higher, and in order to ensure the normal supply of the lubricating oil quantity, most engine design manufacturers adopt modes of increasing the flow of an oil pump, improving the oil pressure of the lubricating oil and the like so as to achieve the full lubricating effect. However, increasing the flow of the oil pump and increasing the oil pressure of the lubricating oil can cause the engine to have the risk of losing oil due to sudden pipe explosion, thereby greatly threatening the service life of the whole engine.
Disclosure of Invention
The invention aims to provide an engine lubricating system and an engine, which can shorten a lubricating oil duct line, so that the flow and the oil pressure of an oil pump do not need to be increased, and the pipe explosion probability is reduced.
The technical scheme provided by the invention is as follows:
In one aspect, an engine lubrication system is provided, comprising:
the crank case is internally provided with a crank shaft, and a crank main oil duct is arranged in the crank shaft;
the side cover is arranged on one side of the crank case, a dark oil duct is arranged in the side cover, and an outlet of the dark oil duct is arranged corresponding to an inlet of the crank main oil duct 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 crank main oil duct under the action of oil pressure in the dark oil duct, so that the sealing part is pressed on the end face of the inlet of the crank main oil duct, the outlet of the dark oil duct is connected with the inlet of the crank main oil duct in a sealing mode, and high-pressure oil in the dark oil duct enters the crank main oil duct through the sleeve.
Further preferably, one end of the sleeve is inserted into an outlet of the dark oil duct;
The sealing part is positioned at the end part of the other end of the sleeve.
Further preferably, the sealing portion is located between both end portions of the sleeve;
One end of the sleeve is inserted into an outlet of the dark oil duct;
the other end of the sleeve is inserted into the inlet of the main oil duct of the crankshaft.
Further preferably, the method further comprises:
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 oil pump is arranged on the side cover, and an oil outlet of the oil pump is communicated with an inlet of the dark oil duct.
Further preferably, the method further comprises:
The engine oil filter is arranged on the side cover, an inlet of the engine oil filter is communicated with the oil pan, and an outlet of the engine oil filter is communicated with an oil inlet of the engine oil pump.
Further preferably, the oil filter is disposed below the oil pump;
And a dark oil duct which is communicated with the outlet of the engine oil filter and the oil inlet of the engine oil pump is also arranged on the side cover.
Further preferably, the blind oil duct includes a vertical oil duct and a first horizontal oil duct;
the crankshaft main oil duct comprises a second horizontal oil duct;
an inlet of the vertical oil duct is communicated with an oil outlet of the oil pump;
the outlet of the vertical oil duct is communicated with the inlet of the first horizontal oil duct;
And the outlet of the first horizontal oil duct is communicated with the inlet of the second horizontal oil duct through the bridging mechanism.
Further preferably, the engine further comprises a crankshaft connecting rod neck oil duct;
The crankshaft main oil duct further comprises an inclined oil duct which is arranged at an angle with the second horizontal oil duct;
the crankshaft connecting rod neck oil duct is communicated with the outlet of the second horizontal oil duct through the inclined oil duct.
On the other hand, still provide an engine, including above-mentioned engine lubrication system.
Compared with the prior art, the engine lubricating system and the engine provided by the invention have the following beneficial effects: according to the invention, the dark oil duct is processed in the side cover, so that the side cover and the machine body can be prevented from being bypassed, and a lubrication circuit is shortened; the outlet of the dark oil duct is opposite to the inlet of the crankshaft main oil duct, and a bridging mechanism is innovatively arranged between the outlet of the dark oil duct and the inlet of the crankshaft main oil duct, so that the bridging mechanism is ingenious in arrangement, and high-pressure oil in the dark oil duct can be introduced into the crankshaft main oil duct through the bridging mechanism, thereby realizing lubrication of the crankshaft connecting rod journal; the reasonable arrangement of the built-in oil duct of the channel and the bridging mechanism not only realizes the lubrication of the journal of the crankshaft connecting rod on the basis of simple structure, but also shortens the lubrication oil duct line, reduces the number of oil drainage points and reduces the oil leakage risk; meanwhile, the flow and the oil pressure of an oil pump are not required to be increased, and the probability of pipe explosion is reduced.
Drawings
The above features, technical features, advantages and implementation of an engine lubrication system and an engine will be further described in a clear and understandable manner by describing preferred embodiments with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of one embodiment of an engine lubrication system of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A when the engine is not operating;
FIG. 3 is an enlarged view of FIG. 1 at A when the engine is operating;
FIG. 4 is a cross-sectional view of another embodiment of an engine lubrication system
FIG. 5 is an enlarged view of FIG. 4 at B when the engine is not operating;
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. dark oil duct; 211. a vertical oil passage; 212. a first horizontal oil passage; 3. a crankshaft; 31. a main oil passage of the crankshaft; 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. crank connecting rod neck oil duct.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
It will be further 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 of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
An embodiment of the present invention improves an engine lubrication system, referring to fig. 1 and 4, which includes a crankcase 1, a side cover 2, and a bridge mechanism. The crank case 1 is internally provided with a crank shaft 3, the crank shaft 3 is internally provided with a crank main oil duct 31, and lubricating oil in the crank main oil duct 31 flows to a crank connecting rod lubricating connecting rod journal.
The side cover 2 is provided on one side of the crankcase 1, and since the crankshaft 3 is always in a rotating state during operation of the engine, there is a gap between the side cover 2 and the crankshaft 3 when the side cover 2 is assembled. The side cover 2 is provided with a blind oil passage 21 therein, and an outlet of the blind oil passage 21 is provided in correspondence with an inlet of the crank main oil passage 31 with a clearance.
The bridging mechanism comprises a sleeve 41 and a sealing part 42, wherein the sealing part 42 is fixedly arranged on the outer side wall of the sleeve 41, one end of the sleeve 41 is inserted into the outlet of the dark oil duct 21 and is arranged in a sliding manner relative to the dark oil duct 21, and the sealing part 42 is positioned outside the outlet of the dark oil duct 21.
When the engine works, the sleeve 41 moves towards the inlet of the crank main oil duct 31 under the pressure of high-pressure oil in the dark oil duct 21, so that the sealing part 42 is pressed on the inlet end surface of the crank main oil duct 31 to connect the outlet of the dark oil duct 21 with the inlet of the crank main oil duct 31 in a sealing way, and the high-pressure oil in the dark oil duct 21 enters the crank main oil duct 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 relative movement does not exist between the sealing part 42 and the crankshaft 3, so that abrasion can be reduced.
The end face of the end of the sleeve 41 inserted into the blind oil duct 21 is a bearing surface, when high-pressure oil passes through the blind oil duct 21, the high-pressure oil acts on the bearing surface of the sleeve 41, so that the sleeve 41 slides in the flow direction of the high-pressure oil under the action of the high-pressure oil pressure, namely moves towards the inlet of the main oil duct 31 of the crankshaft, and the sealing part 42 is pressed on the inlet end face of the main oil duct 31 of the crankshaft, so that the tightness between the bridging mechanism and the crankshaft 3 is improved, and leakage of the high-pressure oil during forward flow is prevented.
In the present embodiment, by processing the dark oil duct 21 inside the side cover 2, bypassing of the side cover 2 and the body can be avoided to shorten the lubrication line; the outlet of the dark oil duct 21 is opposite to the inlet of the crank main oil duct 31, and a bridging mechanism is arranged between the outlet of the dark oil duct 21 and the inlet of the crank main oil duct 31, so that high-pressure oil in the dark oil duct 21 can be introduced into the crank main oil duct 31 through the bridging mechanism to lubricate the journal of the crank connecting rod; the reasonable arrangement of the built-in oil duct of the channel and the bridging mechanism not only realizes the lubrication of the crankshaft connecting rod journal, but also shortens the lubrication oil duct line, reduces the number of oil drainage points and reduces the oil leakage risk; meanwhile, the flow and the oil pressure of an oil pump are not required to be increased, and the probability of pipe 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 duct 21; the sealing portion 42 is located at the end of the other end of the sleeve 41. One end of the sleeve 41 inserted into the dark oil duct 21 enables a sealing part 42 on the other end of the sleeve 41 to prop against the end part of the inlet of the crankshaft main oil duct 31 under the action of high-pressure oil, so that the sealing connection between the dark oil duct 21 and the crankshaft main oil duct 31 is realized through the sleeve 41 and the sealing part 42, and the high-pressure oil in the dark oil duct 21 enters the crankshaft main oil duct 31 through a bridging mechanism, so that lubrication of the crankshaft connecting rod journal is realized.
A sealing ring 5 is also arranged between the outer wall of the sleeve 41 and the inner wall of the blind duct 21. When the seal portion 42 on the outer side wall of the sleeve 41 is pressed against the inlet end face of the crank main oil passage 31, there is a gap between the seal portion 42 and the outlet end face of the blind oil passage 21, and sealing between the bridging mechanism and the blind oil passage 21 cannot be achieved by the seal portion 42, so by providing the seal ring 5 between the outer wall of the sleeve 41 and the inner wall of the blind oil passage 21, leakage of high-pressure oil from between the outer wall of the sleeve 41 and the inner wall of the blind oil passage 21 can be prevented.
In one embodiment, referring to fig. 4 to 6, the sealing portion 42 is located between both end portions of the sleeve 41; one end of the sleeve 41 is inserted into the outlet of the blind oil duct 21; the other end of the sleeve 41 is inserted into the inlet of the crank main oil passage 31. One end of the sleeve 41 is inserted into the dark oil duct 21, and the other end of the sleeve 41 is inserted into the crank main oil duct 31, so that the sleeve 41 still has bridging effect when the sleeve 41 is blocked and cannot move, high-pressure oil in the dark oil duct 21 enters the crank main oil duct 31 through the sleeve 41, and oil leakage is prevented.
A sealing ring 5 is also arranged between the outer wall of the sleeve 41 positioned in the dark oil duct 21 and the inner wall of the dark oil duct 21. When the seal portion 42 on the outer side wall of the sleeve 41 is pressed against the inlet end face of the crank main oil passage 31, there is a gap between the seal portion 42 and the outlet end face of the blind oil passage 21, and sealing between the bridging mechanism and the blind oil passage 21 cannot be achieved by the seal portion 42, so by providing the seal ring 5 between the outer wall of the sleeve 41 and the inner wall of the blind oil passage 21, leakage of high-pressure oil from between the outer wall of the sleeve 41 and the inner wall of the blind oil passage 21 can be prevented.
The sleeve 41 is also provided with a sealing ring between the outer wall in the crank main oil duct 31 and the inner wall of the crank main oil duct 31, when the sleeve 41 is blocked and cannot move towards the inlet of the crank main oil duct 31 under the pressure action of high-pressure oil, and further cannot press the inlet end part of the crank main oil duct 31 through the sealing part 42 to play a sealing role, the sealing role can be played through the sealing ring, and the oil leakage phenomenon can be prevented.
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 duct 21. The oil pump 6 is arranged on the side cover 2, and the blind oil duct 21 is also arranged in the side cover 2, so that the lubricating oil line can be further shortened.
The engine lubrication system further comprises an engine oil filter 7 arranged on the side cover 2, wherein an inlet of the engine oil filter 7 is communicated with the 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 for filtering 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, so that the lubrication 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 duct which is communicated with the outlet of the engine oil filter 7 and the oil inlet of the engine oil pump 6. The 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 is directly arranged on the side cover 2, 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 duct 21 includes a vertical oil duct 211 and a first horizontal oil duct 212; the crank main oil passage 31 includes a second horizontal oil passage 311; an inlet of the vertical oil duct 211 is communicated with an oil outlet of the oil pump 6; an outlet of the vertical oil passage 211 is arranged in communication with an inlet of the first horizontal oil passage 212; the outlet of the first horizontal oil passage 212 is disposed in communication with the inlet of the second horizontal oil passage 311 via a bridging mechanism.
The dark oil duct 21 comprises a vertical oil duct 211 and a first horizontal oil duct 212, the first horizontal oil duct 212 and the second horizontal oil duct 311 are communicated and arranged through a bridging mechanism, namely, the horizontal oil duct and the horizontal oil duct are bridged, and an outlet of the first horizontal oil duct 212 and an inlet of the second horizontal oil duct 311 are oppositely arranged, namely, the outlet of the first horizontal oil duct 212 and the inlet of the second horizontal oil duct 311 are positioned at the same height, and when the bridge mechanism is used for bridging, the difficulty of bridging the oil ducts can be reduced.
The engine lubrication system further comprises a crankshaft connecting rod neck oil duct 8, and the crankshaft main oil duct 31 comprises a second horizontal oil duct 311 and an inclined oil duct 312 which is arranged at an angle with the second horizontal oil duct 311; the crank connecting rod neck oil passage 8 is provided in communication with the outlet of the second horizontal oil passage 311 through an inclined oil passage 312. Lubricating oil in the main crankshaft oil passage 31 enters the connecting rod neck oil passage 8 through the inclined oil passage 312 to lubricate the connecting rod journal.
The embodiment of the invention also provides an engine, referring to fig. 1 to 6, comprising 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 duct 21 in the side cover 2 so as to shorten a lubricating circuit; the outlet of the dark oil duct 21 is opposite to the inlet of the crank main oil duct 31, and a bridging mechanism is arranged between the outlet of the dark oil duct 21 and the inlet of the crank main oil duct 31, so that high-pressure oil in the dark oil duct 21 can be introduced into the crank main oil duct 31 through the bridging mechanism to lubricate the journal of the crank connecting rod; the reasonable arrangement of the built-in oil duct of the channel and the bridging mechanism 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 are not required to be increased, and the probability of pipe explosion is reduced.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (5)
1. An engine lubrication system, comprising:
the crank case is internally provided with a crank shaft, and a crank main oil duct is arranged in the crank shaft;
the side cover is arranged on one side of the crank case, a dark oil duct is arranged in the side cover, and an outlet of the dark oil duct is arranged corresponding to an inlet of the crank main oil duct 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 and positioned between two end parts of the sleeve, one end of the sleeve is inserted into an outlet of the dark oil duct, the other end of the sleeve is inserted into an inlet of the crankshaft main 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 crank main oil duct under the action of oil pressure in the dark oil duct, so that the sealing part is pressed on the end face of the inlet of the crank main oil duct to connect the outlet of the dark oil duct with the inlet of the crank main oil duct in a sealing way, and high-pressure oil in the dark oil duct enters the crank main oil duct through the sleeve;
the sealing ring is arranged between the outer wall of the sleeve and the inner wall of the dark oil duct, and when the sealing part is pressed on the inlet end face of the main oil duct of the crankshaft, the sealing ring seals a gap between the outer wall of the sleeve and the inner wall of the dark oil duct;
The oil pump is arranged on the side cover, and an oil outlet of the oil pump is communicated with an inlet of the dark oil duct;
the dark oil duct comprises a vertical oil duct and a first horizontal oil duct;
the crankshaft main oil duct comprises a second horizontal oil duct;
An inlet of the vertical oil duct is communicated with an oil outlet of the oil pump;
the outlet of the vertical oil duct is communicated with the inlet of the first horizontal oil duct;
And the outlet of the first horizontal oil duct is communicated with the inlet of the second horizontal oil duct through the bridging mechanism.
2. An engine lubrication system according to claim 1, wherein,
Further comprises:
The engine oil filter is arranged on the side cover, an inlet of the engine oil filter is communicated with the oil pan, and an outlet of the engine oil filter is communicated with an oil inlet of the engine oil pump.
3. An engine lubrication system according to claim 2, wherein,
The engine oil filter is arranged below the engine oil pump;
And a dark oil duct which is communicated with the outlet of the engine oil filter and the oil inlet of the engine oil pump is also arranged on the side cover.
4. An engine lubrication system according to claim 1, wherein,
The device also comprises a crankshaft connecting rod neck oil duct;
The crankshaft main oil duct further comprises an inclined oil duct which is arranged at an angle with the second horizontal oil duct;
the crankshaft connecting rod neck oil duct is communicated with the outlet of the second horizontal oil duct through the inclined oil duct.
5. An engine comprising an engine lubrication system according to any one of the preceding claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924336.XA CN110513171B (en) | 2019-09-27 | 2019-09-27 | Engine lubricating system and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924336.XA CN110513171B (en) | 2019-09-27 | 2019-09-27 | Engine lubricating system and engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110513171A CN110513171A (en) | 2019-11-29 |
| CN110513171B true CN110513171B (en) | 2024-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910924336.XA Active CN110513171B (en) | 2019-09-27 | 2019-09-27 | Engine lubricating system and engine |
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| CN (1) | CN110513171B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115247585B (en) * | 2022-06-17 | 2024-02-20 | 潍柴动力股份有限公司 | Main oil duct for removing impurities, lubricating system and engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU5423U1 (en) * | 1996-07-01 | 1997-11-16 | Волгоградский государственный технический университет | INTERNAL COMBUSTION ENGINE CONNECTOR LUBRICATION SYSTEM |
| CN210564698U (en) * | 2019-09-27 | 2020-05-19 | 江苏常发农业装备股份有限公司 | Engine lubricating system and engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20040249A1 (en) * | 2004-04-22 | 2004-07-22 | Gevipi Ag | HYDRAULIC SEALING DEVICE WITH SLEEVE |
| DE102016102535B4 (en) * | 2016-02-15 | 2023-07-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | connecting sleeve |
| CN106122457A (en) * | 2016-08-25 | 2016-11-16 | 南京安维士传动技术股份有限公司 | A kind of for wind turbine gearbox hydraulic fluid port sealing structure |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU5423U1 (en) * | 1996-07-01 | 1997-11-16 | Волгоградский государственный технический университет | INTERNAL COMBUSTION ENGINE CONNECTOR LUBRICATION SYSTEM |
| CN210564698U (en) * | 2019-09-27 | 2020-05-19 | 江苏常发农业装备股份有限公司 | Engine lubricating system and engine |
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| CN110513171A (en) | 2019-11-29 |
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