CN109139173B - Engine cooling and lubricating system - Google Patents
Engine cooling and lubricating system Download PDFInfo
- Publication number
- CN109139173B CN109139173B CN201810462253.9A CN201810462253A CN109139173B CN 109139173 B CN109139173 B CN 109139173B CN 201810462253 A CN201810462253 A CN 201810462253A CN 109139173 B CN109139173 B CN 109139173B
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- Prior art keywords
- oil
- hole
- duct
- cover
- cylinder head
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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
- F01M1/04—Pressure lubrication using pressure in working cylinder or crankcase to operate lubricant feeding devices
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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
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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
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
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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
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
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- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
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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
- F01M2001/062—Crankshaft with passageways
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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
- F01M2001/064—Camshaft with passageways
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
In order to solve the problem that the existing engine lubricating oil duct is difficult to process, the invention provides an engine lubricating structure, lubricating oil of an engine base is conveyed to a cooling device through an engine oil pump and then is conveyed to a filter for filtering; the engine oil filtered by the filter is provided with two oil outlet channels, the first oil outlet channel is communicated with the oil channel of the box body, and the second oil outlet channel is communicated with the oil channel of the box cover; the case cover oil duct is provided with an oil outlet duct which is respectively communicated with the crank oil duct, the cam oil duct and the case body oil duct, and is also provided with a case body top oil outlet duct which is communicated with the cylinder head oil duct; one end of the cylinder head oil duct is communicated with the box oil duct, the other end of the cylinder head oil duct is communicated with the cylinder head cover oil duct, and the cylinder head cover oil duct is provided with a cylinder head cover oil outlet duct. According to the invention, the bypass oil duct is arranged on the box cover, so that the moving parts in part of the box body are lubricated by conveying lubricating oil through the box cover lubricating oil duct, the problem that the existing engine lubricating oil duct is difficult to process is solved, and the processing cost is reduced.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine cooling and lubricating system.
Background
The whole engine structure can be divided into a fixed part and a moving part, wherein the fixed part comprises a box body, a box cover, a cylinder head and a cylinder head cover, the moving part comprises a crankshaft moving system, a camshaft moving system, an air inlet and outlet moving system and the like, in order to ensure the normal operation of the whole engine, a good lubricating system is required, the fuel system and the lubricating system of the four-stroke engine are completely separated, most of the four-stroke engine adopts a mode of combining pressure lubrication and flywheel lubrication, and engine oil is radiated by cooling fins outside the box body of the crankcase. The existing lubrication mode is that the lubricating oil of the oil pan is pumped out by an oil pump and then filtered by a filter, then enters the input end or the output end of a crankcase box body for lubrication, and meanwhile, the lubricating oil is transmitted to a cylinder head through the box body; however, because the engine part structure is complex, especially the crankcase box body, the existing lubrication oil way is difficult to process, and the lubrication oil hole is reserved in the box body or other parts in a pre-casting mode, the residual sand in the reserved lubrication oil hole is difficult to clean after casting in the mode, the lubrication oil is easy to block or mix impurities in the lubrication oil, and the lubrication effect of the engine kinematic pair is affected; in order to solve the problem that the reserved lubricating oil hole is easy to block, the engine is increased in size in a common mode, so that materials are increased, the cost is increased, the power of the engine is reduced, and the normal operation of the engine is not facilitated.
Disclosure of Invention
In order to solve the problem that an existing engine lubricating oil duct is difficult to process, the invention provides an engine cooling and lubricating system, and aims to ensure that all kinematic pairs in an engine can be reasonably lubricated, a lubricating pipeline is simple, the processing cost is low, and meanwhile, the lubricating effect of moving parts in the engine can be improved.
The invention is realized in the following way: the engine cooling and lubricating system comprises an engine oil pump, a cam shaft, a crank shaft, a cooling device and a filter, wherein lubricating oil of an engine base is conveyed to the cooling device through the engine oil pump and then is conveyed to the filter for filtering; the novel engine also comprises a box body oil duct, a box cover oil duct, a cam oil duct, a crank shaft oil duct, a cylinder head oil duct and a cylinder head cover oil duct; the cam oil passage refers to oil holes which are arranged on the cam shaft and communicated with each other, and the crank oil passage refers to oil holes which are arranged on the crank shaft and communicated with each other; the engine oil filtered by the filter is provided with a first oil outlet passage and a second oil outlet passage, the first oil outlet passage is communicated with the oil passage of the box body, and the second oil outlet passage is communicated with the oil passage of the box cover; the case cover oil duct is provided with an oil outlet duct which is respectively communicated with the crank oil duct, the cam oil duct and the case body oil duct, and is also provided with a case body top oil outlet duct which is communicated with the cylinder head oil duct; one end of the cylinder head oil duct is communicated with the box oil duct, the other end of the cylinder head oil duct is communicated with the cylinder head cover oil duct, and the cylinder head cover oil duct is provided with a cylinder head cover oil outlet duct. Further, the box body oil duct comprises a box body cam shaft hole and a box body cam shaft hole which are arranged up and down in the crankcase body, wherein the box body cam shaft hole comprises an input end box body cam shaft hole and an output end box body cam shaft hole, and the box body cam shaft hole comprises an output end box body cam shaft hole and an input end box body cam shaft hole; the filter is arranged on the side surface of the crankcase body, the first oil outlet channel of the filter is connected with the crankshaft hole of the crankcase body at the output end through a first connecting pipeline, and the second oil outlet channel is connected with the crankshaft hole of the crankcase body at the input end and the camshaft hole of the crankcase body at the input end through a second connecting pipeline; the first connecting pipeline is arranged in the box body, and the second connecting pipeline is arranged outside the box body.
Further, the first connecting pipeline comprises a first oil inlet hole and a second oil inlet hole which are arranged in a mutually perpendicular mode, the first oil inlet hole is arranged in parallel with the crankshaft hole of the box body, one end of the first oil inlet hole is connected with the first oil outlet channel, and the other end of the first oil inlet hole extends from the filter mounting hole to the input end of the box body; one end of the second oil inlet is connected with the tail end of the first oil inlet in a penetrating way, and the other end of the second oil inlet is connected with the crankshaft hole of the output end box body.
Further, an oil storage groove is arranged in the crankshaft hole of the input end box body. Further, a first oil return hole is formed in the crankshaft hole of the input end box body; the cam shaft hole of the output end box body is internally provided with a second oil return hole.
Further, the case cover oil duct comprises a case cover oil inlet and a case body top oil outlet duct, a case cover cam shaft hole and a case cover cam shaft hole are arranged in the case cover up and down, the positions of the case cover cam shaft hole and the case cover cam shaft hole are matched with the case body cam shaft hole and the case body cam shaft hole, the case cover cam shaft hole and the case body cam shaft hole jointly bear an engine cam shaft, and the case cover cam shaft hole and the case body cam shaft hole are both provided with interfaces communicated with the cam shaft oil hole; the case cover crankshaft and the case body crankshaft bear the engine crankshaft together, and the case cover crankshaft hole and the case body crankshaft hole are both provided with interfaces communicated with the crankshaft oil holes; the oil inlet of the case cover is communicated with the case cover crankshaft hole, the oil outlet channel at the top of the case body is communicated with the case cover camshaft hole, and a connecting hole is arranged between the case cover crankshaft hole and the case cover camshaft hole.
Further, an oil storage groove is formed in the crank shaft hole of the case cover, and an oil inlet of the case cover is communicated with the oil storage groove.
Further, the axis of the oil outlet channel at the top of the box body is parallel to the axis of the cam shaft hole of the box cover.
Further, the cylinder head cover oil duct comprises a cylinder head cover oil inlet arranged at the bottom of the cylinder head cover, a third oil inlet channel is arranged upwards from the cylinder head cover oil inlet along the side wall of the cylinder head cover, the tail end of the third oil inlet channel is communicated with a fourth oil inlet channel, the fourth oil inlet channel is arranged along the top wall of the cylinder head cover, and the top wall of the cylinder head cover is provided with a cylinder head cover oil outlet duct; one end of the fourth oil inlet channel is communicated with the side wall of the cylinder head cover, and the other end of the fourth oil inlet channel is communicated with the oil outlet channel of the cylinder head cover.
Further, the diameter of the cylinder head cover oil outlet passage is smaller than the aperture of the fourth oil inlet passage, or a taper hole section is arranged at one end of the fourth oil inlet passage along the cylinder head cover oil outlet passage.
In use, the lubricating oil of the engine base is conveyed to the cooling device through the engine oil pump and then is conveyed to the filter for filtration; the engine oil filtered by the filter is provided with two oil outlets, the first oil outlet channel is communicated with the oil channel of the box body, and lubricating oil is provided for the crankshaft kinematic pair and the camshaft kinematic pair in the box body; the second oil outlet channel is communicated with the box cover oil channel, the box cover oil channel is provided with an oil outlet communicated with the box body oil channel, lubricating oil is transmitted to the box cover through the second oil outlet channel and is transmitted to the box body through the box cover oil channel, and lubricating oil is also provided for a crankshaft kinematic pair and a camshaft kinematic pair in the box body; the case cover oil duct is also provided with a case top oil outlet duct communicated with the cylinder head oil duct; the invention sets up the oil-dividing duct on the case lid, the motion part in the part of the case body is lubricated through the case lid lubrication duct, also convey the lubricating oil to the cylinder head cover through the case lid lubrication duct through the motion part of the case head, and then finish the lubrication, has reduced the arrangement density of the existing case body oil duct, because the case lid structure is simpler than the case body, so has solved the difficult problem of processing of the existing engine lubrication duct, has reduced the processing cost; the problem that the lubricating oil is easy to block or impurities are mixed in the lubricating oil due to the fact that the lubricating oil hole is reserved in the existing casting is solved, the lubricating effect of the engine kinematic pair is guaranteed, and the lubricating device is simple in structure and better in lubricating effect.
Drawings
FIG. 1 is a schematic perspective view of an engine cooling and lubrication system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a main view of an oil duct of a tank according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a tank oil gallery according to an embodiment of the present invention;
FIG. 4 is a schematic view of a part of an oil duct of a tank according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a partial cross section of the case oil passages G2-G2 according to an embodiment of the present invention;
FIG. 6 is a schematic view showing a partial cross section of the oil passages G3-G3 of the tank according to the embodiment of the invention;
fig. 7 is a schematic diagram of a cover oil duct in a front view according to an embodiment of the present invention;
FIG. 8 is a schematic rear view of an oil gallery of a box cover according to an embodiment of the invention;
FIG. 9 is a schematic cross-sectional view of a cover oil gallery A-A in accordance with an embodiment of the invention;
FIG. 10 is a schematic cross-sectional view of a case cover oil gallery E-E in accordance with an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of a tank cap oil gallery B-B in accordance with an embodiment of the present invention;
FIG. 12 is a schematic cross-sectional view of a case cover oil gallery C-C according to an embodiment of the invention;
FIG. 13 is a schematic top view of an oil gallery of a cylinder head cover according to an embodiment of the present invention;
fig. 14 is a schematic view of a cylinder head cover oil gallery M-M according to an embodiment of the present invention;
in the figure: 1 box oil duct, 1-101 input box camshaft hole, 1-102 output box camshaft hole, 1-1021 second oil return hole, 1-201 input box camshaft hole, 1-2011 first oil return hole, 1-202 output box camshaft hole, 1-203 oil storage ditch, 3 filter 5 mounting hole, 1-301 first oil outlet duct, 1-401 first oil inlet hole, 1-402 second oil inlet hole, 2 box cover oil duct, 2-1 box cover oil inlet, 2-2 box cover camshaft hole, 2-201 oil storage ditch, 2-3 box cover camshaft hole, 2-4 box top oil outlet duct, 2-5 reinforcing rib, 2-6 connecting hole, 3 cylinder head cover oil duct, 3-1 seal groove, 3-2 cylinder head cover oil inlet, 3-3 third oil inlet channel, 3-4 fourth oil inlet channel, 3-5 cylinder head cover outlet, 3-6 cylinder head cover bottom, 3-7 cylinder head cover side wall, 3-8 plug, 3-9 cylinder head cover top wall, 4 cooling device, 4 oil duct, 5 filter.
Detailed Description
In specific use, as shown in fig. 1-13, the engine cooling and lubricating system comprises an oil pump, a camshaft, a crankshaft, a cooling device 4 and a filter 5, wherein lubricating oil on an engine base is conveyed to the cooling device 4 through the oil pump and then is conveyed to the filter 5 for filtration; the novel engine also comprises a box body oil duct 1, a box cover oil duct 2, a cam oil duct, a crank shaft oil duct, a cylinder head oil duct and a cylinder head cover oil duct 3; the cam oil passage refers to oil holes which are arranged on the cam shaft and communicated with each other, and the crank oil passage refers to oil holes which are arranged on the crank shaft and communicated with each other; the engine oil filtered by the filter 5 is provided with a first oil outlet passage and a second oil outlet passage, the first oil outlet passage is communicated with the box oil passage 1, and the second oil outlet passage is communicated with the box cover oil passage 2; the case cover oil duct 2 is provided with an oil outlet duct which is respectively communicated with the crank oil duct, the cam oil duct and the case body oil duct 1, and is also provided with a case body top oil outlet duct which is communicated with the cylinder head oil duct; one end of the cylinder head oil duct is communicated with the box oil duct 1, the other end of the cylinder head oil duct is communicated with the cylinder head cover oil duct 3, and the cylinder head cover oil duct 3 is provided with a cylinder head cover oil outlet duct.
In the specific use of the invention, the lubricating oil of the engine base is conveyed to the cooling device 4 through the engine oil pump and then is conveyed to the filter 5 for filtration; the engine oil filtered by the filter is provided with two oil outlets, the first oil outlet channel is communicated with the box oil channel 1, and lubricating oil is provided for a crankshaft kinematic pair and a camshaft kinematic pair in the box; the second oil outlet channel is communicated with the box cover oil channel 2, the box cover oil channel 2 is provided with an oil outlet communicated with the box body oil channel 1, lubricating oil is transmitted to the box cover through the second oil outlet channel, and the lubricating oil is transmitted to the box body through the box cover oil channel 2, so that lubricating oil is also provided for a crankshaft kinematic pair and a camshaft kinematic pair in the box body; the case cover oil duct 2 is also provided with a case top oil outlet duct communicated with the cylinder head oil duct; the invention sets up the oil-dividing duct on the case cover, the motion part in the part case body is lubricated through the case cover lubrication duct, the motion part through the case cover lubrication duct to the cylinder head cover, and then finish the lubrication, has reduced the arrangement density of the existing case body oil duct 1, because the case cover structure is simpler than the case body, so has solved the difficult problem of processing of the existing engine lubrication duct, has reduced the processing cost; the problem that the lubricating oil is easy to block or impurities are mixed in the lubricating oil due to the fact that the lubricating oil hole is reserved in the existing casting is solved, the lubricating effect of the engine kinematic pair is guaranteed, and the lubricating device is simple in structure and better in lubricating effect.
Further, in order to reduce the processing cost of the crankcase, the filter 5 is arranged at the side of the crankcase, the lubricating oil in the oil pan is pumped out by the lubricating oil pump and then enters the lubricating oil filter 5, the filtered lubricating oil flows out of the first oil outlet channel 1-301 and the second oil outlet channel respectively through the filter 5 mounting hole 1-3, wherein a part of the lubricating oil flows into the crankcase crankshaft hole 1-202 through the first connecting pipe, lubricates the kinematic pair of the crankcase crankshaft hole 1-202, and the other part of the lubricating oil flows into the crankcase crankshaft hole 1-201 and the crankcase crankshaft hole 1-101 through the second connecting pipe, lubricates the kinematic pair of the crankcase crankshaft hole 1-201 and lubricates the kinematic pair of the crankcase crankshaft hole 1-101 respectively, and thus the lubricating oil is finished. The processing difficulty of the crankcase box body lubricating oil duct is reduced through the connection, the problem that the existing crankcase box body lubricating oil duct is inconvenient to process is solved, the processability of the crankcase box body lubricating oil duct is improved, and the processing cost is reduced.
Further, in order to improve the workability of the lubrication oil passage of the crankcase housing, in this embodiment, the first connecting pipe includes a first oil inlet hole 1-401 and a second oil inlet hole 1-402 that are disposed perpendicular to each other, the first oil inlet hole 1-401 is disposed in parallel with the crankcase crankshaft hole, one end thereof is connected to the first oil outlet passage 1-301, and the other end extends from the filter 5 mounting hole 1-3 to the input end of the housing; one end of the second oil inlet hole 1-402 is connected with the tail end of the first oil inlet hole 1-401 in a penetrating way, and the other end of the second oil inlet hole 1-402 is connected with the crankshaft hole 1-202 of the output end box body. In a specific application, the filtered lubricating oil enters a first oil inlet hole 1-401 through a first oil outlet channel 1-301, then the lubricating oil flows into a second oil inlet hole 1-402 from the first oil inlet hole 1-401, and further reaches an output end box crankshaft hole 1-202, so that kinematic pairs of the output end box crankshaft hole 1-202 are lubricated; in order to facilitate the processing of the first oil inlet hole 1-401 and the second oil inlet hole 1-402, the first oil inlet hole 1-401 is arranged in parallel with a crankshaft hole of the box body, the second oil inlet hole 1-402 and the first oil inlet hole 1-401 are vertically arranged, plugs are arranged at the end parts of the second oil inlet holes 1-402, drill cuttings are directly carried out from the side face of the crankcase body in the processing process, plugs are arranged at the end parts of the second oil inlet holes 1-402 in the actual use after the processing is finished, oil leakage is prevented, the structure is simple, and the lubricating effect is better.
Further, in order to improve the lubrication effect, the crankshaft hole 1-201 of the input end box body is internally provided with the oil storage groove 1-203, and in actual use, the lubrication oil is pressurized, so that the lubrication effect is improved, and the lubrication groove 1-203 is always filled with the lubrication oil.
Further, in order to improve the lubrication effect and promote the internal recycling of the lubricating oil system, in the embodiment, the box crankshaft hole comprises an output end box crankshaft hole 1-202 and an input end box crankshaft hole 1-201, lubricating oil reaches the input end box crankshaft hole 1-201 through a second connecting pipeline and lubricates a kinematic pair of the input end box crankshaft hole 1-201, and in order to facilitate recovery and recycling, a first oil return hole 1-2011 is further arranged in the input end box crankshaft hole 1-201, and lubricating oil flows back to the oil pan through the first oil return hole 1-2011; similarly, the lubricating oil reaches the camshaft hole 1-201 of the input end box body through the second connecting pipeline, the kinematic pair of the camshaft hole 1-101 of the input end box body is lubricated, the lubricating oil reaches the camshaft hole 1-102 of the output end box body through the camshaft oil hole, the kinematic pair of the shaft neck of the output end of the camshaft is lubricated, in order to facilitate recovery and recycling, the second oil return hole 1-1021 is further arranged in the camshaft hole of the output end, and the lubricating oil flows back into the oil pan through the second oil return hole 1-1021.
Further, in order to reduce the processing cost, the case cover oil duct 22 comprises a case cover oil inlet 2-1 and a case body top oil outlet duct 2-4, a case cover cam shaft hole 2-3 and a case cover cam shaft hole 2-2 are arranged in the case cover up and down, the positions of the case cover cam shaft hole and the case body cam shaft hole are matched, the case cover cam shaft hole and the case body cam shaft hole bear an engine cam shaft together, and the case cover cam shaft hole and the case body cam shaft hole are both provided with interfaces communicated with cam shaft oil holes; the case cover crankshaft and the case body crankshaft bear the engine crankshaft together, and the case cover crankshaft hole and the case body crankshaft hole are both provided with interfaces communicated with the crankshaft oil holes. Lubricating oil enters the crankcase cover through the case cover oil inlet 2-1, and because the case cover oil inlet 2-1 is communicated with the case cover crank shaft hole 2-2, the lubricating oil enters the crankcase cover through the case cover oil inlet 2-1 and then flows into the case cover crank shaft hole 2-2, and enters each crank shaft kinematic pair through the crank shaft oil hole to lubricate the engine crank shaft kinematic pair; a connecting hole 2-6 is arranged between the box cover crank shaft hole 2-2 and the box cover crank shaft hole 2-3, lubricating oil flows into the box cover crank shaft hole 2-3 from the box cover crank shaft hole 2-2 through the connecting hole 2-6, and enters into each cam shaft kinematic pair through the cam shaft oil hole to lubricate the cam shaft kinematic pair; the oil outlet duct 2-4 at the top of the box body is communicated with the cam shaft hole 2-3 of the box cover, and lubricating oil flows out from the cam shaft hole 2-3 of the box cover through the oil outlet duct 2-4 at the top of the box body and reaches the cylinder head to lubricate moving parts in the cylinder head, so that each moving pair of the engine can be reasonably lubricated; because the structure of the box cover is far simpler than that of the box body, the split pore canal of the lubricating oil duct is arranged in the box cover, the processing cost of the lubricating oil duct of the engine is greatly reduced, in the invention, the cost is reduced by more than 60%, the problem of high processing cost in the prior art is solved, and the invention has simple structure and excellent lubricating effect.
Further, in order to improve the lubrication effect, an oil storage groove 2-201 is arranged in the crankcase cover crankshaft hole 2-2, and the crankcase cover oil inlet 2-1 is communicated with the oil storage groove 2-201, so that in actual use, the lubrication oil is pressurized, the lubrication oil is always filled in the oil storage groove 2-201, and the lubrication effect is improved; in the embodiment, the engine is arranged in a V shape, two oil outlet channels 2-4 are arranged at the top of the box body, lubricating oil is respectively conveyed to corresponding cylinder heads, and lubrication of kinematic pairs in the cylinder heads is completed.
Further, in order to facilitate the engagement of the top oil outlet passage 2-4 of the box body with the cylinder head, in this embodiment, the axis of the top oil outlet passage 2-4 of the box body is parallel to the axis of the cam shaft hole 2-3 of the box cover; in order to improve the structural strength of the box cover, the back of the box cover is provided with the reinforcing ribs 2-5, and in addition, the reinforcing ribs 2-5 are arranged to further increase the heat dissipation of lubricating oil, improve the lubricating effect and prolong the service life of the lubricating oil.
Further, in order to improve the tightness, the cylinder head cover oil inlet 3-2 is arranged between two sealing grooves 3-1 of the cylinder head cover bottom 3-6; in order to improve the lubrication effect and reduce the processing cost, the pressure lubricating oil enters the cylinder head cover through the cylinder head cover oil inlet 3-2, enters the fourth oil inlet channel 3-4 along the third oil inlet channel 3-3, one end of the fourth oil inlet channel 3-4 is communicated with the cylinder head cover oil outlet channel 3-5, and the lubricating oil is sprayed out of the cylinder head cover oil outlet channel 3-5 through the fourth oil inlet channel 3-4, so that the cylinder head cover oil outlet channel 3-5 is arranged on the cylinder head cover top wall 3-9, the lubricating oil is sprayed out from the top to lubricate all parts in the cylinder head cover, and the lubrication mode replaces a point-to-point spraying lubrication mode in the prior art by spraying, so that the lubrication effect is improved, and each kinematic pair in the cylinder head cover of the engine can be reasonably lubricated; in order to facilitate processing, one end of the fourth oil inlet channel 3-4 is communicated with the cylinder head cover side wall 3-7, and in the processing process, a fourth oil inlet hole is processed from the cylinder head cover side wall 3-7, so that the processing cost is reduced; when in actual use, the fourth oil inlet and the oil inlet of the side wall 3-7 of the cylinder head cover are plugged by the plug 3-8, so that oil leakage is prevented; the lubricating pipeline is simple in structure and low in processing cost.
Further, in order to further improve the lubrication effect, in the embodiment, the diameter of the cylinder head cover oil outlet duct 3-5 is smaller than the aperture of the fourth oil inlet channel 3-4, the pipe diameter of the lubricating oil is reduced in the circulation process, the pressure is increased, and the lubrication effect is improved; in order to further improve the lubricating oil spraying pressure, in the invention, a taper hole section is arranged at one end of the fourth oil inlet channel 3-4 along the oil outlet channel 3-5 of the cylinder head cover, and the diameter of the taper hole is reduced, so that the spraying pressure is improved, and the lubricating effect is further improved.
Further, in order to reduce the processing cost, in this embodiment, the fourth oil inlet channel 3-4 and the third oil inlet channel 3-3 are obliquely arranged, so that the fourth oil inlet channel 3-4 is convenient to process.
While the invention has been particularly shown and described with reference to a particular embodiment thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The engine cooling and lubricating system comprises an engine oil pump, a cam shaft, a crank shaft, a cooling device and a filter, wherein lubricating oil of an engine base is conveyed to the cooling device through the engine oil pump and then is conveyed to the filter for filtering; the novel engine is characterized by further comprising a box body oil duct, a box cover oil duct, a cam oil duct, a crankshaft oil duct, a cylinder head oil duct and a cylinder head cover oil duct; the cam oil passage refers to oil holes which are arranged on the cam shaft and communicated with each other, and the crank oil passage refers to oil holes which are arranged on the crank shaft and communicated with each other; the engine oil filtered by the filter is provided with a first oil outlet passage and a second oil outlet passage, the first oil outlet passage is communicated with the oil passage of the box body, and the second oil outlet passage is communicated with the oil passage of the box cover; the case cover oil duct is provided with an oil outlet duct which is respectively communicated with the crank oil duct, the cam oil duct and the case body oil duct, and is also provided with a case body top oil outlet duct which is communicated with the cylinder head oil duct; one end of the cylinder head oil duct is communicated with the box oil duct, the other end of the cylinder head oil duct is communicated with the cylinder head cover oil duct, and the cylinder head cover oil duct is provided with a cylinder head cover oil outlet duct; the box body oil duct comprises a box body camshaft hole and a box body camshaft hole which are arranged up and down in a crankcase body, wherein the box body camshaft hole comprises an input end box body camshaft hole and an output end box body camshaft hole, and the box body crankshaft hole comprises an output end box body camshaft hole and an input end box body crankshaft hole; the filter is arranged on the side surface of the crankcase body, the first oil outlet channel of the filter is connected with the crankshaft hole of the crankcase body at the output end through a first connecting pipeline, and the second oil outlet channel is connected with the crankshaft hole of the crankcase body at the input end and the camshaft hole of the crankcase body at the input end through a second pipeline; the first connecting pipeline is arranged in the box body, and the second connecting pipeline is arranged outside the box body; the box cover oil duct comprises a box cover oil inlet and a box body top oil outlet duct, a box cover cam shaft hole and a box cover cam shaft hole are arranged in the box cover up and down, the positions of the box cover oil duct and the box body cam shaft hole are matched with the box body cam shaft hole and the box body cam shaft hole together bear an engine cam shaft, and the box cover cam shaft hole and the box body cam shaft hole are both provided with interfaces communicated with the cam shaft oil holes; the case cover crankshaft and the case body crankshaft bear the engine crankshaft together, and the case cover crankshaft hole and the case body crankshaft hole are both provided with interfaces communicated with the crankshaft oil holes; the oil inlet of the case cover is communicated with the case cover crankshaft hole, the oil outlet channel at the top of the case body is communicated with the case cover camshaft hole, and a connecting hole is arranged between the case cover crankshaft hole and the case cover camshaft hole; an oil storage groove is formed in the crank shaft hole of the case cover, and an oil inlet of the case cover is communicated with the oil storage groove; the cylinder head cover oil duct comprises a cylinder head cover oil inlet arranged at the bottom of the cylinder head cover, a third oil inlet channel is arranged upwards from the cylinder head cover oil inlet along the side wall of the cylinder head cover, the tail end of the third oil inlet channel is communicated with a fourth oil inlet channel, the fourth oil inlet channel is arranged along the top wall of the cylinder head cover, and the top wall of the cylinder head cover is provided with a cylinder head cover oil outlet duct; one end of the fourth oil inlet channel is communicated with the side wall of the cylinder head cover, and the other end of the fourth oil inlet channel is communicated with the oil outlet channel of the cylinder head cover.
2. The engine cooling and lubrication system according to claim 1, wherein the first connecting pipe includes a first oil inlet hole and a second oil inlet hole which are disposed perpendicular to each other, the first oil inlet hole being disposed in parallel with the crankcase crankshaft hole, one end of the first oil inlet hole being connected to the first oil outlet passage, and the other end extending from the filter mounting hole to the input end of the crankcase; one end of the second oil inlet is connected with the tail end of the first oil inlet in a penetrating way, and the other end of the second oil inlet is connected with the crankshaft hole of the output end box body.
3. The engine cooling and lubrication system according to claim 2, wherein an oil reservoir is provided in the crankshaft bore of the input housing.
4. The engine cooling and lubrication system according to claim 2, wherein a first oil return hole is provided in the crankshaft hole of the input-side case; the cam shaft hole of the output end box body is internally provided with a second oil return hole.
5. The engine cooling and lubrication system according to claim 1, wherein the tank top oil drain axis is parallel to the tank cover camshaft axis.
6. The engine cooling and lubrication system according to claim 1, wherein the cylinder head cover oil outlet passage has a diameter smaller than a diameter of the fourth oil inlet passage, or the fourth oil inlet passage is provided with a taper hole section along one end of the cylinder head cover oil outlet passage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810462253.9A CN109139173B (en) | 2018-05-15 | 2018-05-15 | Engine cooling and lubricating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810462253.9A CN109139173B (en) | 2018-05-15 | 2018-05-15 | Engine cooling and lubricating system |
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| CN109139173A CN109139173A (en) | 2019-01-04 |
| CN109139173B true CN109139173B (en) | 2023-09-22 |
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| CN2898316Y (en) * | 2006-03-02 | 2007-05-09 | 无锡市现代精工有限公司 | External lubricating oil-way of engine |
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| CN109139173A (en) | 2019-01-04 |
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