CN201193545Y - Auto pressure reducing and multifunction safety device for internal combustion engine - Google Patents
Auto pressure reducing and multifunction safety device for internal combustion engine Download PDFInfo
- Publication number
- CN201193545Y CN201193545Y CNU2008200219841U CN200820021984U CN201193545Y CN 201193545 Y CN201193545 Y CN 201193545Y CN U2008200219841 U CNU2008200219841 U CN U2008200219841U CN 200820021984 U CN200820021984 U CN 200820021984U CN 201193545 Y CN201193545 Y CN 201193545Y
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- pressure relief
- pressure
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- oil
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Abstract
The utility model relates to an internal-combustion engine automatic pressure relief and multifunctional safety protection device which belongs to the technical field of internal-combustion engine device. A single cylinder engine is hand-powered usually, thereby being inconvenient for rocking the vehicle and reducing pressure at the same time. In a technical proposal, a pressure relief valve base (5) is locked and fixed on a cylinder cover (11) by a locknut (6); the pressure relief valve base (5) is provided with a pressure relief valve shaft (1) at the inside; a spring (3) is sleeved at the pressure relief valve shaft (1); the inner end of the pressure relief valve base (5) is screwed with a lock nut (2); the other end of the pressure relief valve base (5) is equipped with an oil inlet pipe (8) which is communicated with an oil pumping cavity of an engine oil pump (15) by a lubricant oil passage (12); the oil inlet pipe (8) is near to an oil pipe joint (9) and is screwed at the pressure relief valve base (5); and the pressure relief valve shaft (1) is corresponding with a valve (13). The internal-combustion engine automatic pressure relief and multifunctional safety protection device has the advantage of creating an automatic protection mechanism which uses the action and the control of the self engine oil pressure of the engine to reduce the pressure automatically and prevent reverse rotation automatically without engine oil.
Description
Technical field
The utility model relates to the internal-combustion engine arrangement technical field; be internal-combustion engine decompression and multifunctional safe protective gear automatically more specifically; it is applied to starting drive and automatic anti-reverse and the automatic resist technology of inorganic oil of internal-combustion engine; belong to a kind of advanced person, full automatic hydraulic mechanical type multifunctional safe device, be applicable to motors such as various diesel engines and petrol engine.
Background technique
In order to alleviate the resistance of start of motor, motor can be started smoothly, operated by rotary motion has decompressor; Usually the design of the decompressor of motor is leaned on manual operation during engine start on valve mechanism cover.For single-cylinder engine, generally adopt manual cranking, on one side at this moment on one side larry to play decompression very inconvenient, sometimes accidentally or larry strength deficiency, rotating speed not enough, will cause engine inversion, abnormally dangerous.For row machine mobile purposes such as (automobile-used or) used with tractor electricity is piloted engine, must could be at driving in-house operation decompressor by a series of leverages, very inconvenient.So NBS requires the single cylinder diesel of manual cranking must install automatic pressure-reducing device additional in the recent period.
Present existing automatic decompression device roughly has two kinds: a kind of is the semi-automatic mechanism of decompressor of ratchet-type, and it designs on valve mechanism cover, acts on valve during decompression it is opened; Earlier ratchet mechanism is pulled to decompression position before general the startup, ratchet mechanism discharges automatically in the starting process, and the resistance of start is reduced.But the shortcoming of ratchet mechanism is to determine that it acts on perdurabgility, can not guarantee the effect of finishing when motor reaches starting speed by the number of teeth of ratchet; So motor needs to start repeatedly and ratchet mechanism also needs repeatable operation sometimes; This semi-automatic mechanism of decompressor in fact than manual decompression by force not what, therefore seldom be employed.Another kind of automatic decompression device can be called mechanical centrifugal automatic decompression device, and operated by rotary motion is on camshaft; It is formed by flying piece and support thereof, spring and act on the cam part such as projection; Fly piece before the engine start and be in the internal lock state, the projection of the mechanism of decompressor is higher than the cam generating circle and makes valve mechanism be in decompression state this moment; Flying piece when motor reaches starting speed opens and drives and receive in the projection of the mechanism of decompressor and lose decompression; This is a kind of full-automatic decompression technology, but generally only is used for the small-sized single cylinder petrol engine owing to be subjected to the restriction of structural volume; Because the centrifugal force of needs is bigger, what fly that the piece support need do is bigger when being used for large bore engine, and the engine body of can't packing into is interior and act on intake and exhaust cam, so this automatic decompression device also is subjected to certain restriction.
In addition, the phenomenon of reversing appears in the motor of hand starting sometimes.This is breakneck to the operator, sometimes the operator is caused serious injury.So European norm and recent NBS require the single cylinder engine of manual cranking must install anti-reverse mechanism additional.The so-called anti-reverse mechanism of at present existing though similar " Niu Shi ", because its loosely organized complexity, effect is not inconsistent, and is difficult to be suitable as " product " and uses.So need the more succinct practical automatic anti-reverse mechanism of development and Design.
Moreover farm engine does not generally have fuel level indicator, and what have only is provided with the engine oil pressure indicator in a part of motor, observes very inconvenient; Even the organic oil pressure gauge, often people also not too note, in case lack the phenomenon that machine oil will cause axis tile or scuffing of cylinder bore.For the motor of conventional purposes, also do not see suitable no oil pressure automatic safety device at present, need the such device of exploitation equally.
Summary of the invention
For overcoming above-mentioned shortcoming, the purpose of this utility model is a kind of internal-combustion engine of design decompression and multifunctional safe protective gear automatically.Its technological scheme is: Pressure relief valve seat is locked on valve mechanism cover by locking nut, column part that Pressure relief valve seat combines with valve mechanism cover and Pressure relief valve seat endoporus are eccentric, pressure-reducing valve shaft is housed in the Pressure relief valve seat, spring housing is on pressure-reducing valve shaft, Pressure relief valve seat is screwed with lock nut on the inner, the other end of Pressure relief valve seat is equipped with oil inlet pipe (connecing) links up by oil leab and oil pump pumping cavity, oil inlet pipe (connecing) is tightened on the Pressure relief valve seat by inlet connector, manual return bar is housed on the inlet connector, and pressure-reducing valve shaft is corresponding with valve.The advantage of this model utility is: 1. handle reduces pressure automatically, anti-reverse, inorganic oil protects three kinds of functions to be integrated automatically automatically, is a kind of design very cleverly.It is equivalent to the effect of three kinds of mechanisms simultaneously, and number of spare parts is few, compact structure, low cost of manufacture; Its comprehensive function be any machinery or electronic technology can not replace.2. wherein any effect all can exist and protection as a proprietary technology, requires and different motors to be suitable for different effects.3. it can be the same with traditional mechanism of decompressor, design is on engine air cylinder cap, basically need not change the design at other positions of motor, for some motor (as the S of Chinese mass production series single cylinder diesel) even can directly change the original manual mechanism of decompressor into this automatic decompression device and get final product.This greatly facilitates promoting the use of of present technique.4. the engine oil pressure that utilizes the lubrication system that any motor self has is as decompression automatically, the power source of anti-reverse, inorganic oil automatic safety device automatically, and without power supply or other mechanical energy, make this technology be suitable for the motor of any pattern, comprise the hand starting internal-combustion engine; And its decompression and the anti-reverse internal-combustion engine that is particularly suitable for hand starting again automatically automatically.More than 4 formed typical the motor automatically key technology and the advantages of decompression and multifunctional safe protective gear.Created with the automatic decompression of motor self engine oil pressure effect and control, anti-reverse, inorganic oil automatic protective mechanism and working principle thereof automatically.
The utility model handle reduces pressure automatically, anti-reverse, inorganic oil protects three kinds of functions to be integrated automatically automatically, is a kind of design very cleverly.It has the effect of three kinds of mechanisms simultaneously, and wherein any effect all can exist and protection as a proprietary technology again; The engine oil pressure that the utility model only utilizes the lubrication system that any motor self has is as decompression automatically, the power source of anti-reverse, inorganic oil automatic safety device automatically, and, make this technology be suitable for the motor of any pattern without power supply or other mechanical energy; This is not see before, so the utlity model has uniqueness and novelty.
The utility model handle reduces pressure automatically, anti-reverse, inorganic oil protects three kinds of functions to be integrated automatically automatically, and number of spare parts is few, compact structure, low cost of manufacture; Its comprehensive function be any machinery or electronic technology can not replace.It is applicable to the not motor of same-action requirement.Can be the same with traditional mechanism of decompressor, design is on engine air cylinder cap, basically need not change the design at other positions of motor, for some motor (as the S of Chinese mass production series single cylinder diesel) even can directly change the original manual mechanism of decompressor into this automatic decompression device and get final product.This greatly facilitates the industry manufacturing of present technique and promotes the use of, so the utlity model has good practicability.
Description of drawings
Fig. 1 is a composition schematic representation of the present utility model, Fig. 2 is a core of the present utility model position sectional view, decompression state figure when Fig. 3 is startup, Fig. 4 is the non-decompression state figure in starting back, Fig. 5 is just changing a job for motor and is doing phase diagram, Fig. 6 is engine abnormity inverted status figure, and Fig. 7 is that motor is that engine abnormity lacks the machine oil phase diagram normally supplying working state figure under the machine oil situation, Fig. 8.In the accompanying drawing: 1. decompression shaft, 2. lock nut, 3. spring, 4. back-up ring, 5. Pressure relief valve seat, 6. locking nut, 7. sealing gasket, 8. oil inlet pipe, 9. fuel inlet fitting, 10. manual return bar, 11. valve mechanism cover, 12. oil leabs, 13. valves, 14. oil sumps, 15, oil pump.
Embodiment:
The technological scheme that its technical problem that solves the utility model adopts is: a kind of internal-combustion engine is decompression and multifunctional safe protective gear automatically, has the Pressure relief valve seat on the valve mechanism cover of being contained in, Pressure relief valve seat is locked on valve mechanism cover by locking nut, column part that Pressure relief valve seat combines with valve mechanism cover and Pressure relief valve seat endoporus are eccentric, its offset can require to adjust design generally at 1～3mm according to the difference of motor; Thus can be according to the working state adjustment decompression amount of motor.Pressure-reducing valve shaft, spring are housed in the Pressure relief valve seat, make its position that remains on unseat the valve by the lock nut that is screwed in reducing valve body the inner, promptly " decompression position " is to play decompression; The other end of Pressure relief valve seat is equipped with oil inlet pipe (connecing) links up with oil pump, makes the direct induction machine oil pressure of an end of pressure-reducing valve shaft; This end of pressure-reducing valve shaft is equivalent to a slidably plunger, when engine oil pressure is established to certain value, just promote automatically plunger move make the decompression valve rod leave the valve decompression position, valve freedom of entry working state, engine start enters proper functioning.Oil inlet pipe (connecing) is pressed on the Pressure relief valve seat by inlet connector, and manual return bar is housed on the fuel inlet fitting, and manual return bar can be realized manually decompression or reduce pressure malfunctioning automatically or making the time spent manual action by mistake.
The technological scheme that its automatic anti-reverse problem that solves the utility model adopts is: have the Pressure relief valve seat on the valve mechanism cover of being contained in, Pressure relief valve seat is locked on valve mechanism cover by locking nut, column part that Pressure relief valve seat combines with valve mechanism cover and Pressure relief valve seat endoporus are eccentric, its offset can require to adjust design generally at 1～3mm according to the difference of motor; Thus can be according to the working state adjustment decompression amount of motor.Pressure-reducing valve shaft, spring are housed in the Pressure relief valve seat, make it remain on certain position in the reduction valve by the lock nut that is screwed in reducing valve body the inner; The other end of Pressure relief valve seat is equipped with oil inlet pipe (connecing) links up with oil pump, makes the direct induction machine oil pressure of an end of pressure-reducing valve shaft; This end of pressure-reducing valve shaft is equivalent to a slidably plunger, when motor bent axle when starting just changes, at this moment oil pump work, engine oil pressure enters the reducing valve body inner chamber by machine oil road, machine oil pipe (connecing), under the effect of engine oil pressure, pressure-reducing valve shaft moves to the direction of non-decompression and keeps motionless; In case motor upset, oil pump be the reverse operation thereupon overturning also, machine oil flows backwards, at this moment become negative pressure by malleation immediately in the machine oil road, pressure-reducing valve shaft is returned to the decompression state of unseat the valve immediately under the effect of spring, motor then stops working because of losing compression, and upset stops.
The utility model solves the technological scheme that its inorganic oil protects problem automatically and adopted: have the Pressure relief valve seat on the valve mechanism cover of being contained in, Pressure relief valve seat is locked on valve mechanism cover by locking nut, column part that Pressure relief valve seat combines with valve mechanism cover and Pressure relief valve seat endoporus are eccentric, its offset can require to adjust design generally at 1～3mm according to the difference of motor; Thus can be according to the working state adjustment decompression amount of motor.Pressure-reducing valve shaft, spring are housed in the Pressure relief valve seat, make it remain on certain position in the reduction valve by the lock nut that is screwed in reducing valve body the inner; The other end of Pressure relief valve seat is equipped with oil inlet pipe (connecing) links up with oil pump, makes the direct induction machine oil pressure of an end of pressure-reducing valve shaft; This end of pressure-reducing valve shaft is equivalent to a slidably plunger, and when motor oil pump work during in the motor proper functioning, the machine oil in the engine sump tank is sucked by oil pump, enters the machine oil pipeline after the oil pump pressurization; Flowing on the one hand needs lubricated movement parts gap, engine oil pressure enters the reducing valve body inner chamber by machine oil road, machine oil pipe (connecing) on the other hand, under the effect of engine oil pressure, pressure-reducing valve shaft moves to the direction of non-decompression and keeps motionless, holds on engine; In case engine sump tank lacks machine oil; or oil pump work is undesired; or abnormal leakage machine oil problem appears in the engine oil path somewhere; the inner chamber of Pressure relief valve seat can lose engine oil pressure at once; at this moment pressure-reducing valve shaft is repositioned to the unseat the valve decompression position under the spring force effect; motor then stops working because of losing compression, and motor quits work gradually, thereby has played the inorganic oil protective action.In addition; when motor is forgotten oiling or machine oil deficiency; can't set up enough oil pressure in the Pressure relief valve seat oil pocket; pressure-reducing valve shaft will make valve be in open mode at spring under effect all the time; under the automatism of this device; motor is fail to start, thereby when all played the inorganic oil protective action.
1. decompression and multifunctional safe protective gear structure are formed and working principle automatically:
A kind of motor shown in Fig. 1,2,3 and 4 is decompression and multi-functional automatic safety device automatically, has the Pressure relief valve seat 5 on valve mechanism cover of being contained in 11, Pressure relief valve seat 5 is locked on cylinder head 11 covers by locking nut 6, column part and Pressure relief valve seat endoporus that Pressure relief valve seat 5 combines with valve mechanism cover 11 are eccentric, its offset can require to adjust design generally at 1～3mm according to the difference of motor; Can adjust the position of decompression shaft 1 according to the working state of motor thus, thereby play the effect of adjusting pressure relief value with respect to valve 13 heads.Pressure-reducing valve shaft 1, spring 3 are housed in the Pressure relief valve seat 5, make its position that remains on unseat the valve by the lock nut 2 that is screwed in Pressure relief valve seat 5 the inners, i.e. " decompression position " is to play decompression; The other end of Pressure relief valve seat is equipped with oil inlet pipe (connecing) 8, links up by oil leab 12 and oil pump 15 pumping cavities, makes the direct induction machine oil pressure of an end of pressure-reducing valve shaft 1; This end of pressure-reducing valve shaft 1 is equivalent to a slidably plunger, can drive whole pressure-reducing valve shaft and move axially.Oil inlet pipe (connecing) 8 leans on inlet connector 9 to be pressed on the Pressure relief valve seat 5, and manual return bar 10 is housed on the fuel inlet fitting 9, and manual return bar 10 can be realized manually decompression or reduce pressure malfunctioning automatically or making the time spent manual action by mistake.
Before engine start, motor remains static, machine oil oil inlet pipe 8 and Pressure relief valve seat 5 inner chamber engine oil pressures equal " 0 ", pressure-reducing valve shaft 1 rests in low order end automatically under the effect of spring 3, at this moment just in time (valve can be an intake valve to the left end big column of pressure-reducing valve shaft 1 part on the valve center line, also can be exhaust valve), because of when design pressure-reducing valve shaft big column part external diameter and certain amount of interference (pressure relief value is arranged during valve-closing, general 1～3mm, it is fixed to require according to different motors), so this moment, decompression shaft 1 forced valve 13 to be in certain opening position, motor loses compression, at this moment light ato unit is the decompression working state this moment.
When engine start reaches certain rotating speed, oil pump 15 work, when machine oil reaches certain pressure, the elastic force promotion pressure-reducing valve shaft 1 that the engine oil pressure of Pressure relief valve seat 5 inner chambers overcomes spring 3 moves to left, the big column of pressure-reducing valve shaft 1 partly leaves valve 13 heads, valve 13 freedom of entry normal workings, engine start work, decompression state finishes.
2. the automatic anti-reverse working principle of the utility model:
Have the Pressure relief valve seat 5 on valve mechanism cover of being contained in 11, Pressure relief valve seat 5 is locked on cylinder head 11 covers by locking nut 6, and pressure-reducing valve shaft 1, spring 3 are housed in the Pressure relief valve seat 5, at Pressure relief valve seat 5 one ends lock nut 2 is housed; The other end of Pressure relief valve seat is equipped with oil inlet pipe (connecing) 8, links up by oil leab 12 and oil pump 15 pumping cavities, makes the direct induction machine oil pressure of an end of pressure-reducing valve shaft 1; This end of pressure-reducing valve shaft 1 is equivalent to a slidably plunger, and when engine oil pressure Pressure relief valve seat inner spring 3 strength were uneven, it can move axially about Pressure relief valve seat 5 axially bored line directions are done.
When motor when starting bent axle just change, oil pump 15 work at this moment, engine oil pressure enters Pressure relief valve seat 5 inner chambers by machine oil road 12, machine oil pipe (connecing 8); Under the effect of engine oil pressure, the great circle cylinder of pressure-reducing valve shaft 1 moves to the non-decompression position that leaves valve 13 ends and keeps motionless; At this moment can keep the running of motor normal starting.In case engine abnormity causes upset, oil pump 15 is the reverse operation thereupon overturning also, machine oil flows backwards, at this moment become negative pressure by malleation immediately in the machine oil road, pressure-reducing valve shaft 1 is returned to the decompression state of unseat the valve 13 immediately under the effect of spring 3, motor then stops working because of losing compression, and upset stops.
3. the utility model solves inorganic oil and protects the problem working principle automatically:
Has the Pressure relief valve seat 5 on valve mechanism cover of being contained in 11, Pressure relief valve seat 5 is locked on valve mechanism cover 11 by locking nut 6, pressure-reducing valve shaft 1, spring 3 are housed in the Pressure relief valve seat 5, make it remain on certain position in the Pressure relief valve seat 5 by the lock nut 2 that is screwed in Pressure relief valve seat 5 the inners; The other end of Pressure relief valve seat is equipped with oil inlet pipe (connecing) 8 links up with oil pump 21, makes the direct induction machine oil pressure of an end of pressure-reducing valve shaft 1.
When motor oil pump 15 work during in proper functioning, the machine oil in the engine sump tank 14 is sucked by oil pump 15, enters machine oil pipeline 12 after oil pump 15 pressurizations; Flowing on the one hand needs lubricated movement parts gap, and engine oil pressure enters Pressure relief valve seat 5 inner chambers by machine oil road 12, machine oil pipe (connecing) 8 on the other hand; Under the effect of engine oil pressure, pressure-reducing valve shaft 1 moves to the direction of non-decompression and keeps motionless, holds on engine; In case engine sump tank lacks machine oil; or oil pump 15 work are undesired; or abnormal leakage machine oil problem appears in the engine oil path somewhere; the inner chamber of Pressure relief valve seat 5 can lose engine oil pressure at once; at this moment pressure-reducing valve shaft 1 is repositioned to the unseat the valve decompression position under the spring force effect; motor then stops working because of losing compression, and motor quits work gradually, thereby has played the inorganic oil protective action.In addition, when motor is forgotten oiling or machine oil deficiency, can't set up enough oil pressure in Pressure relief valve seat 5 oil pockets, pressure-reducing valve shaft 1 will make valve be in open mode under spring 3 effects all the time; Under the automatism of this device, motor is fail to start, thereby when all played the inorganic oil protective action.
Claims (1)
1. internal-combustion engine reduces pressure and the multifunctional safe protective gear automatically; it is characterized in that: Pressure relief valve seat (5) is locked on cylinder head (11) cover by locking nut (6); column part and Pressure relief valve seat endoporus that Pressure relief valve seat (5) combines with valve mechanism cover (11) are eccentric; pressure-reducing valve shaft (1) is housed in the Pressure relief valve seat (5); spring (3) is enclosed within on the pressure-reducing valve shaft (1); Pressure relief valve seat (5) is screwed with lock nut (2) on the inner; the other end of Pressure relief valve seat (5) is equipped with oil inlet pipe (connecing) (8) links up by oil leab (12) and oil pump (15) pumping cavity; oil inlet pipe (connecing) (8) is tightened on the Pressure relief valve seat (5) by inlet connector (9); manual return bar (10) is housed on the inlet connector (9), and pressure-reducing valve shaft (1) is corresponding with valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200219841U CN201193545Y (en) | 2008-05-15 | 2008-05-15 | Auto pressure reducing and multifunction safety device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200219841U CN201193545Y (en) | 2008-05-15 | 2008-05-15 | Auto pressure reducing and multifunction safety device for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193545Y true CN201193545Y (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200219841U Expired - Fee Related CN201193545Y (en) | 2008-05-15 | 2008-05-15 | Auto pressure reducing and multifunction safety device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193545Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560898B (en) * | 2009-06-02 | 2011-01-05 | 江苏江淮动力股份有限公司 | Diesel engine and decompression mechanism thereof |
-
2008
- 2008-05-15 CN CNU2008200219841U patent/CN201193545Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560898B (en) * | 2009-06-02 | 2011-01-05 | 江苏江淮动力股份有限公司 | Diesel engine and decompression mechanism thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 |