CN202732020U - Lubricating oil passage of diesel engine - Google Patents
Lubricating oil passage of diesel engine Download PDFInfo
- Publication number
- CN202732020U CN202732020U CN 201220316434 CN201220316434U CN202732020U CN 202732020 U CN202732020 U CN 202732020U CN 201220316434 CN201220316434 CN 201220316434 CN 201220316434 U CN201220316434 U CN 201220316434U CN 202732020 U CN202732020 U CN 202732020U
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- oil
- diesel engine
- shell
- engine
- lubricating oil
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Abstract
The utility model relates to a lubricating oil passage of a diesel engine. The lubricating oil passage comprises an oil pool, a vertical oil inlet duct which is arranged in the diesel engine body and connected with the oil pool, a one-way valve which is arranged at the bottom of the vertical oil inlet duct and used for preventing the engine oil in the vertical oil inlet duct from flowing back, and an engine oil pump communicated with the top of the vertical oil inlet duct. The one-way valve is arranged between the engine oil pump and the oil pool, so that the engine oil in the vertical oil inlet duct can be prevented from flowing back to the oil pool after the engine is stopped; in other words, after the engine is stopped, the one-way valve is used for sealing all the engine oil in the vertical oil inlet duct; and when the engine is restarted, the engine oil pump is capable of pumping the engine oil to the lubricating oil passage rapidly. The problem that the engine oil rises slowly when the engine is started is solved; and the problems of bearing scoring and cylinder scoring of the engine and the like are effectively solved.
Description
Technical field
The utility model relates to a kind of lubricating oil path that prevents the diesel engine that machine oil refluxes for motor.
Background technique
The engine lubrication mode generally is divided into gets rid of lubricated two kinds of oil lubrication and forced draught, getting rid of oil lubrication is to utilize disc that the machine oil that splashes in the crankcase is got rid of to oil leab, its feature is as long as engine running will throw away by machine oil, reliable operation, but lubrication pressure is little, so general is used at subminiature motor.Most of motor all can use the lubricated mode of forced draught, oil pump namely is set in lubricating oil path, oil pump presses to the machine oil sucking-off lubricating oil path everywhere of motor again from oil sump, this machine oil with certain pressure can guarantee that friction pair is lubricated fully everywhere.But the shortcoming of forced draught lubricating system is when piloting engine at every turn, oil pump can lag behind the time that oil sucks out, motor moved one or two minute often, lubricating oil path does not also have machine oil, longer for oil pump oil suction road especially, the situation that the oil pump mounting point is higher, pump oil is just longer lag time, if at this moment motor continues operation and can not get oil lubricating, will cause dry grinding, cause the wearing and tearing of connecting rod bearing shell, bent axle, piston, serious situation can cause Bearing score, scuffing of cylinder bore.Behind the engine shutdown; machine oil in the vertical Oil passage will be back in the oil sump; when piloting engine at every turn; oil pump oil suction road is inorganic oil; oil pump just can pump machine oil after need to the air in the chamber, oil suction road is all drained; oil pump oil suction road is length and the higher situation in oil pump mounting point, and the pump oil time will be very long.
The model utility content
Technical problem to be solved in the utility model provides and a kind ofly machine oil pumped fast and the lubricating oil path of the diesel engine that Rapid Implementation is lubricated.
For addressing the above problem, the lubricating oil path of the diesel engine that the utility model provides comprises: oil sump, be located at the vertical oil input channel that links to each other with described oil sump in this diesel-engine body, be located at the oil pump that the machine oil in the vertical oil input channel is back to the one-way valve of described oil sump, is connected with described vertical oil input channel top that prevents of this vertical oil input channel bottom.Between oil pump and oil sump, one-way valve is set; can avoid that the machine oil in the described vertical oil input channel all is back in the described oil sump after shutdown; that is: utilize one-way valve that machine oil all is sealed in the described vertical oil input channel after the shutdown; when again starting, oil pump can be extracted into oil leab with machine oil rapidly.Get a difficult problem slowly when having solved engine start on the machine oil, effectively solved the problems such as motor Bearing score, scuffing of cylinder bore.
As preferred scheme, described one-way valve comprises: tightly fit in described vertical oil input channel bottom tube-like envelope, be located at the valve body in the shell and be covered in sealing plate on the top port of shell, the top of described valve body and described sealing plate central authorities link to each other.
As further preferred scheme, described valve body comprises the center valve rod, is located at the multi-disc guiding flap of this center stem bottom, each flap that leads is suitable for being immersed in the described oil sump, to utilize machine oil to the buoyancy of each guiding flap, alleviate gravity to the impact of described valve body, be beneficial to after oil pump is opened, can open easily this one-way valve.
The external diameter at the top port place of shell is less than the external diameter of the middle and lower part of shell, sealing plate diameter less than the external diameter of the middle and lower part of shell, and the internal diameter greater than the top port of shell, to realize the adopting less sealing plate of diameter to cover the purpose of the top port of described shell fully, and then avoid the situation that friction occurs with the inwall of shell sealing plate occurring, guaranteed the smooth unlatching of one-way valve.
Each flap Central Symmetry that leads is distributed on the valve rod of center; Each flap that leads is suitable for the little Spielpassung of inwall with described shell, so that in the process that opens and closes described one-way valve, the center valve rod is suitable for axial displacement, guarantees the reliability that one-way valve opens and closes.
The radial clearance of described guiding flap and described outer casing inner wall less than described sealing plate top port radius poor of radius and described shell, to prevent that the situation of the top port of described shell from use appearring covering fully in described sealing plate, guaranteed the cut-off effect.
Described oil pump is rotor-type oil pump, and the end of the rotor in the oil pump and the camshaft of diesel engine is in transmission connection.
Further, the high-pressure oil passage that links to each other with the high-voltage oil cavity of described oil pump is provided with the oil strainer transition seat; The end face of oil strainer transition seat and organization seal oil chamber are provided with the too high pressure-limit valve of oil pressure that prevents described seal oil chamber between sealing oil pocket and the described oil sump; Pressure-limit valve makes the filtering base end face be communicated with oil sump with the seal oil chamber of organization, and it also is an one-way valve, and is just logical when engine oil pressure is high, and the low maintenance of engine oil pressure is closed.
The utility model has positive effect with respect to prior art: the one-way valve that prevents that machine oil from refluxing that arranges between oil pump and oil sump of the present utility model, get a difficult problem slowly when having solved engine start on the machine oil, effectively solved the problems such as motor Bearing score scuffing of cylinder bore.Described sealing plate is to be formed by the sheet metal punching, and valve body has adopted nylon material to alleviate its weight.This one-way valve utilized valve body and sealing plate deadweight be close to the shell upper-end surface, like this so that the above machine oil of shell block and can not flow back in the oil sump.The one-way valve position is substantially in oil sump; there is buoyancy in machine oil to valve body; when making the first oil suction of oil pump can by described buoyancy overcome valve body and sealing plate gravity; with the machine oil sucking-off; utilize one-way valve that machine oil all is sealed in the oil duct after the shutdown, oil pump just can be extracted into oil leab to machine oil soon when again starting.
Description of drawings
Fig. 1 is the structural representation of the lubricating oil path of diesel engine of the present utility model;
Fig. 2 is the cross section view of one-way valve of the present utility model;
Fig. 3 is the plan view of Fig. 2;
Fig. 4 is the structural drawing of valve body;
Fig. 5 is the A-A cross section view of the valve body among Fig. 4;
Fig. 6 is the worm's eye view of Fig. 4.
Embodiment
See Fig. 1 to 6, the lubricating oil path of the diesel engine of the present embodiment comprises: oil sump, be located at the vertical oil input channel that links to each other with described oil sump in this diesel-engine body, be located at this vertical oil input channel bottom prevent that the machine oil in the vertical oil input channel is back to the one-way valve 2 of described oil sump, the thick filtering net 1(thick filtering net 1 of being located at these one-way valve 2 bottoms is tiny mesh plate), the oil pump 3 that is connected with described vertical oil input channel top.One-way valve 2 is set between oil pump 3 and oil sump; can avoid that the machine oil in the described vertical oil input channel all is back in the described oil sump after shutdown; that is: utilize one-way valve that machine oil all is sealed in the described vertical oil input channel after the shutdown; when again starting, oil pump can be extracted into oil leab with machine oil rapidly.Get a difficult problem slowly when having solved engine start on the machine oil, effectively solved the problems such as motor Bearing score, scuffing of cylinder bore.Described one-way valve can be selected conventional one-way valve.
Preferred version as described one-way valve, described one-way valve 2 comprises: tightly fit in described vertical oil input channel bottom tube-like envelope c, be located at the valve body b in the shell c and be covered in sealing plate a on the top port of shell c, the top of described valve body b links to each other with the central authorities of described sealing plate a.
Described valve body b comprises center valve rod b1, is located at the multi-disc guiding flap b2 of this center valve rod b1 bottom, each flap b2 that leads is suitable for being immersed in the described oil sump, to utilize machine oil to the buoyancy of each guiding flap b2, alleviate gravity to the impact of described valve body, can overcome the gravity of valve body b and sealing plate a also fast with the machine oil sucking-off by described buoyancy when making oil pump 3 first oil suction.
The external diameter at the top port place of shell c is less than the external diameter of the middle and lower part of shell c, the diameter of sealing plate a is less than the external diameter of the middle and lower part of shell c, and the internal diameter greater than the top port of shell c, to realize the adopting less sealing plate of diameter to cover the purpose of the top port of described shell c fully, and then avoid the situation that friction occurs with the inwall of shell c sealing plate occurring, guaranteed the smooth unlatching of one-way valve 2.
Each flap b2 Central Symmetry that leads is distributed on the valve rod b1 of center; Each flap b2 that leads is suitable for the little Spielpassung of inwall with described shell c, so that in the process that opens and closes described one-way valve 2, center valve rod b1 is suitable for axial displacement, guarantees the reliability that one-way valve 2 opens and closes.
The radial clearance of described guiding flap b2 and described shell c inwall less than described sealing plate top port radius poor of radius and described shell, to prevent that the situation of the top port of described shell from use appearring covering fully in described sealing plate, guaranteed the cut-off effect.
Described oil pump 3 is rotor-type oil pump, and the end of the rotor in the oil pump and the camshaft of diesel engine is in transmission connection.
The high-pressure oil passage that links to each other with the high-voltage oil cavity of described oil pump 3 is provided with oil strainer transition seat 10; The end face of oil strainer transition seat 10 and organization seal oil chamber are provided with the too high pressure-limit valve 4 of oil pressure that prevents described seal oil chamber between sealing oil pocket and the described oil sump.
The method of work of the lubricating oil path of above-mentioned diesel engine, comprise: after oil pump 3 is opened, in described vertical oil input channel, form negative pressure, one-way valve 2 is opened, the vertical oil input channel that machine oil in the oil sump enters by one-way valve 2 through thick filtering net 1 coarse filtration, then the dark oil duct through the twice square crossing in the body enters the low pressure oil pocket of oil pump 3, and the high pressure oil of the high-voltage oil cavity output of oil pump 3 enters in the seal oil chamber by the end face of oil strainer transition seat 10 and organization; Machine oil in the described seal oil chamber is introduced machine oil cooler 9 through the first external oil pipe 7, then entering this oil filter 8 of oil filter 8(through the second external oil pipe is fixed on the oil strainer transition seat 10), then introduce the front dark oil duct of main axle bush 5 through the oil strainer double-screw bolt of oil filter 8, divide two place's oil circuits after arriving main axle bush 5, one the tunnel through the lubricated connecting rod bearing shell of crankshaft oil gallery and other two places main axle bushs, then get back in the machine oil pond through spill port; Another road is introduced the cylinder cap oil duct and is entered pitman arm shaft by the 3rd external oil pipe 6, and rocking arm is lubricated, and then is back in the machine oil pond by pushing rod sleeve, and a circulation of whole like this lubricating oil path has just been finished.
This one-way valve is vertically mounted in the engine oil pump oil input channel, valve body b adopts the nylon material manufacturing, in order to alleviate its weight, valve body b and sealing plate a adopt the mode of rivet hot to link together, sealing plate a adopts the sheet metal punching to form, this Oil passage one-way valve has utilized the deadweight of valve body b and sealing plate a to be close to shell c upper-end surface, so that the above machine oil of shell c is blocked and can not be flow back in the oil sump.
Described one-way valve mounting point is substantially in oil sump; only need overcome when so just having guaranteed the first oil suction of oil pump just can be with the machine oil sucking-off behind the gravity of valve body b and sealing plate a; utilize one-way valve that machine oil all is sealed in the oil duct after the shutdown, oil pump just can be extracted into oil leab to machine oil soon when again starting.
Claims (8)
1. the lubricating oil path of a diesel engine is characterized in that comprising: oil sump, be located at the vertical oil input channel that links to each other with described oil sump in this diesel-engine body, be located at the oil pump that the machine oil in the vertical oil input channel is back to the one-way valve of described oil sump, is connected with described vertical oil input channel top that prevents of this vertical oil input channel bottom.
2. the lubricating oil path of diesel engine according to claim 1, it is characterized in that: described one-way valve comprises: tightly fit in described vertical oil input channel bottom tube-like envelope, be located at the valve body in the shell and be covered in sealing plate on the top port of shell, the top of described valve body and described sealing plate central authorities link to each other.
3. the lubricating oil path of diesel engine according to claim 2, it is characterized in that: described valve body comprises: the center valve rod, be located at the multi-disc guiding flap of this center stem bottom, each flap that leads is suitable for being immersed in the described oil sump.
4. the lubricating oil path of diesel engine according to claim 2, it is characterized in that: the external diameter at the top port place of described shell is less than the external diameter of the middle and lower part of shell, sealing plate diameter less than the external diameter of the middle and lower part of shell, and greater than the internal diameter of the top port of shell.
5. the lubricating oil path of diesel engine according to claim 3, it is characterized in that: each flap Central Symmetry that leads is distributed on the valve rod of center; Each flap that leads is suitable for the little Spielpassung of inwall with described shell.
6. the lubricating oil path of diesel engine according to claim 5 is characterized in that: the radial clearance of described guiding flap and described outer casing inner wall less than described sealing plate top port radius poor of radius and described shell.
7. the lubricating oil path of diesel engine according to claim 1, it is characterized in that: described oil pump is rotor-type oil pump, the end of the rotor in the oil pump and the camshaft of diesel engine is in transmission connection.
8. the lubricating oil path of diesel engine according to claim 1, it is characterized in that: the high-pressure oil passage that links to each other with the high-voltage oil cavity of described oil pump is provided with the oil strainer transition seat;
The end face of oil strainer transition seat and organization seal oil chamber are provided with the too high pressure-limit valve of oil pressure that prevents described seal oil chamber between sealing oil pocket and the described oil sump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316434 CN202732020U (en) | 2012-06-29 | 2012-06-29 | Lubricating oil passage of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316434 CN202732020U (en) | 2012-06-29 | 2012-06-29 | Lubricating oil passage of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732020U true CN202732020U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220316434 Expired - Lifetime CN202732020U (en) | 2012-06-29 | 2012-06-29 | Lubricating oil passage of diesel engine |
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| CN (1) | CN202732020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691543A (en) * | 2012-06-29 | 2012-09-26 | 常州科普动力机械有限公司 | Lubricant oil passage of diesel engine and working method of lubricant oil passage |
-
2012
- 2012-06-29 CN CN 201220316434 patent/CN202732020U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691543A (en) * | 2012-06-29 | 2012-09-26 | 常州科普动力机械有限公司 | Lubricant oil passage of diesel engine and working method of lubricant oil passage |
| CN102691543B (en) * | 2012-06-29 | 2015-02-04 | 常州科普动力机械有限公司 | Lubricant oil passage of diesel engine and working method of lubricant oil passage |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
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| CX01 | Expiry of patent term |