CN101619666A

CN101619666A - Engine lubricating loop device

Info

Publication number: CN101619666A
Application number: CN200810135936A
Authority: CN
Inventors: 林思亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-03
Filing date: 2008-07-03
Publication date: 2010-01-06
Anticipated expiration: 2028-07-03
Also published as: CN101619666B

Abstract

The invention relates to an engine lubricating loop device. A one-way valve chamber is communicated and connected with a crankshaft chamber and is connected with a first branch pipe in parallel, and the first branch pipe is connected with a first venturi pipe communicated between air feed pipes connected with a cam linkage mechanism chamber; and a second branch pipe is arranged between the camshaft chamber and the crankshaft chamber under the cam linkage mechanism chamber, a second venturi pipe is arranged on the second branch pipe and is connected with an oil suction passage, the other end of the oil suction passage is communicated with an oil suction flexible pipe, and one end of the oil suction flexible pipe is contained in a lubricating oil chamber and is connected with a counterweight. When a piston falls, partial oil fog enters the first branch pipe to be delivered into the first venturi pipe and then is atomized and mixed with oil gas coming from the lubricating oil chamber to form fine oil frog with adequate oil fluid, and the fine oil frog enters the cam linkage mechanism chamber and a rocker arm chamber so as to lubricate various moving machine parts; when the piston rises, negative pressure generated in the crankshaft chamber sucks the oil fluid into the second venturi pipe; and after being atomized with the oil frog flowing in the second branch pipe, the oil fluid is recycled into the crankshaft chamber.

Description

Engine lubricating loop device

Technical field

The present invention relates to a kind of lubrication system of four-journey engine.

Background technique

The outdoor power equipment that carries out operation with hand-held is of a great variety, mowing machine for example, the beta pruning machine, the equipment of small motor utensil that log splitter or other agro-industry are used etc., early stage these facility are its major impetus source with two-stroke engine, but directly go problems such as discharging because incomplete combustion and unburned fuel take place two-stroke engine easily, and contain a large amount of hydrocarbon (HC in its exhaust, Hydrocarbon) pollution sources, cause in the process of two-stroke engine facility use, the drawback that can derive the ambient air quality is worsened, therefore, under the requirement of environmental regulation, the four-journey engine of no exhaust emission pollution problem replaces two-stroke engine gradually, becomes the power resources of portable work machine tool.

For four-journey engine can smooth and easyly be moved, need with lubricated each part of proper amount of machine oil, and the hand-held power equipment for meeting job requirement, must be operated under various angles when operation, therefore, for making the facility job area not limited, four-journey engine need cooperate above-mentioned job behavior, and is designed under any angle, engine can both obtain oil lubricating, and can be for arbitrarily upset use.

Known four-journey engine mainly is made up of basic parts such as crankshaft room, camshaft chest, rocker arm chamber and oil chamber, the oil chamber stores lubricant oil, need earlier the lubricating oil of liquid state is atomized into the mist of oil of gas-liquid attitude when the lubrication system of engine operates, and mist of oil is delivered in camshaft chest and the rocker arm chamber to moisten each engine module.Wherein, liquid lubricant mist changes into the lubricant mist of gas-liquid attitude, and the process that is sent to each engine module comprises following manner: utilize the timing mechanism that is arranged on the crankshaft, lubricant oil is borrowed the negative pressure of crankcase suck in the crankcase by the oil chamber, utilize the high speed rotating of counter weight piece again, fluid is dispersed as the mist of oil state, and in the descending stroke of piston, with this mist of oil force feed to each motion; By being arranged on the crankshaft and going deep into the high speed rotary motion of the oily wooden dipper in the oil chamber, lubricant oil in the oil chamber is dispersed as the mist of oil state, in the stroke of the rising of piston, this mist of oil is sucked in the crankcase, the malleation that produces when utilizing the descending stroke of piston again, with the mist of oil force feed to each motion; The oil suction tracheae is set in the oil chamber, and offer two or more oil-sucking holes at oil suction tracheae tube wall, so as to drawing the lubricant oil in the oil chamber, the negative pressure that rises and produced by piston earlier during running, the endotracheal lubricant oil of oil suction is atomized rapidly, and enter in the crankshaft room, when treating that piston descends, mist of oil in the crankshaft room just can be delivered in the camshaft chest, with lubricated each parts.

Aforesaid way all needs to set up the device (counter weight piece, oily wooden dipper and oil suction tracheae) that makes the lubricant oil atomizing again in engine, these devices remove the manufacture cost that increases engine, also increase the weight of the whole heavy burden of engine, the inconvenience that causes the operator to use, and for ordering about these device runnings, automotive engine system also need be exported a part of power and use for it, causes the additive decrementation of engine output power; In addition, structure in facility is complicated more, contained spare part more for a long time, also represent whole facility can vitiable fault probability also high more, for example set oil suction tracheae all can be drawn to lubricant oil in the oil chamber under any angle in order to make, and just need make the pipeline of oil suction tracheae extend to be covered with in lubricant oil and can arrive part, no matter make the oil suction tracheae under which kind of operation angle, all the pipeline of some is dipped under the lubricant oil liquid level, all can be drawn to lubricant oil constantly to guarantee the oil suction tracheae.Yet this kind design complexity and the various oil suction tracheae pipeline of pipeline easily because of a pipeline blockage in numerous loops has some setbacks, and influences the generation of mist of oil, make mist of oil can't normal circulation to each critical part of engine, it is moist and damage to cause parts to lack mist of oil.On the other hand, when the lubricating oil of delivering to each part group of engine is too much, also can cause the burden of these spare parts, cause the waste and the loss of lubricant oil simultaneously.Therefore, if can research and develop simple and easy, the additive decrementation engine output power and moderate lubrication fluid can be delivered to each position of engine and can effectively reclaim the lubrication system of unnecessary lubricating oil not of structure, will more help the small-sized general application of using four-journey engine that small-sized light weight and high power are exported.

For improving in the known four-journey engine lubrication system, the too various shortcoming that causes rate of fault lifting, cost to increase and must additionally provide its power of the parts that atomized lubrication oil and lubrication system are set up, and solve the too much caused foregoing problems of lubricating oil, the invention provides a kind of engine lubricating loop device.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of engine lubricating loop device, and low-cost, less trouble and lubrication oil consumption amount are few and need not extra power output.

Engine lubricating loop device of the present invention comprises: crankshaft room, unidirectional valve chamber, oil chamber, cam double-action mechanism chamber, rocker arm chamber, lubricant oil recovery area, at least one first branch pipe and at least one second branch pipe; Wherein, this crankshaft room is for by the space that is constituted below the inside of crankcase, cylinder and the piston; The oil chamber is the confined space that stores lubricant oil; Unidirectional valve chamber and crankshaft room connect, and unidirectional valve chamber is connected with the oil chamber by the oil return tracheae, and unidirectional valve chamber is equipped with first branch pipe in addition, and the indoor one-way valve that is provided with of one-way valve; First branch pipe be communicated in unidirectional valve chamber and and the snorkel that connects of cam double-action mechanism chamber between, this first branch pipe, one end is connected with this unidirectional valve chamber, its the other end is communicated on this snorkel tube wall, and first branch pipe and snorkel tube wall connect the place of establishing or its near be provided with first Venturi tube; Second branch pipe is arranged in crankshaft room and is arranged between the camshaft chest of below, cam double-action mechanism chamber, also be communicated with on second branch pipe and be provided with the suction passage and second Venturi tube, oil suction flexible pipe one end is placed in the oil chamber and is equipped with counterweight member at its lubricant oil suction port place, this oil suction flexible pipe is by the weight of this counterweight member, when engine all can free deflection under any angle, and the suction port position of this oil suction flexible pipe remains under the lubricant oil liquid level.

In addition; be provided with the lubricant oil recovery area between the cylinder-head cover of rocker arm chamber top and recovery approach lid; it comprises at least one lubricant oil and reclaims the chamber; and this lubricant oil recovery chamber is interconnected; and each the diagonal angle corner up and down in the lubricant oil recovery area with respect to rocker arm chamber offers the recovery approach that two or more can be hole or siphunculus; and no matter which kind of work angle engine is in, and has a recovery approach at least and can draw superfluous mist of oil and the fluid that condenses and sink; Lubricant oil recovery area one termination is provided with lubricant oil and reclaims house steward, and lubricant oil reclaims house steward's one end and then connects with crankshaft room, therefore, sucks the lubricant oil in the lubricant oil recovery area, can reclaim house steward by lubricant oil and be recycled in the crankshaft room.In addition, be provided with the Oil-gas Separation chamber between lubricant oil recovery area and rocker arm chamber, be provided with porosity parts in it with oil suction effect, and the Oil-gas Separation chamber offers two or more Oil-gas Separation chamber through holes near this side of rocker arm chamber, enter Oil-gas Separation so as to making lubricant mist superfluous in the rocker arm chamber pass through this Oil-gas Separation chamber through hole indoor, and in the porosity parts adsorpting lubrication mist of oil contained fluid, and its adsorbed lubricating oil can enter in the lubricant oil recovery area by this recovery approaches of contiguous porosity parts.

In the process that piston descends, lubricant mist in the crankshaft room can enter in the unidirectional valve chamber, most of lubricant mist can advance to the oil chamber, the lubricant mist of small part can and enter first Venturi tube through first branch pipe, relend the structure and the porosity oil absorption material characteristic of first Venturi tube, contained fluid in the lubricant mist that absorption is passed through; On the other hand, enter the lubricant mist in the oil chamber, unexpected reduction because of its flow velocity, can in the oil chamber, oil gas be separated with fluid, isolated oil gas by first Venturi tube, relends the atomizing by first Venturi tube via snorkel, the fluid on the porosity parts of oil suction but atomizing is detained, and the fitting piston malleation that descends and to be produced, and then the lubricant mist that will contain an amount of fluid is delivered to each parts group place in cam double-action mechanism chamber and the rocker arm chamber.

In the process that piston rises, can form negative pressure and produce suction in crankshaft room, make that superfluous lubricant mist sucks second branch pipe with the lubricating oil that condenses in the camshaft chest, oil suction this moment flexible pipe also can be because of crankshaft room's negative pressure, and the lubricating oil in the oil chamber is sucked in second branch pipe through suction passage, these lubricant mists and lubricating oil relend the negative pressure that is risen and produced by the atomizing of second Venturi tube and piston, and then the lubricant mist of imperceptibility is recycled in the crankshaft room; In addition, the lubricant mist that is entered in the rocker arm chamber by cam double-action mechanism chamber then continues the suction that up motion is produced because of piston, be inhaled in the lubricant oil recovery area through recovery approach, and the part mist of oil in the rocker arm chamber can enter in the Oil-gas Separation chamber through Oil-gas Separation chamber through hole, and in the set porosity parts adsorpting lubrication mist of oil of Oil-gas Separation chamber contained fluid, this fluid can be further via being arranged near the recovery approach the porosity parts and enter the lubricant oil recovery area, all lubricant oil that are recovered can compile and enter lubricant oil and reclaim house steward in the lubricant oil recovery area, are recycled in the crankshaft room at last.And carry out once more when the down stroke when piston, second branch pipe and lubricant oil can be reclaimed lubricant mist that house steward reclaimed and fluid once again from crankshaft room's force feed unidirectional valve chamber extremely, thereby finish the lubricated circulation of whole engine.On the other hand,, then drain in the air-strainer through respirating tube, when the intake stroke of engine, in the air suction firing chamber with the external world with blow gas (Blow-by Gas) at the indoor isolated oil gas of Oil-gas Separation.

By engine lubricating loop device of the present invention, can utilize simple and need not the composition member that extra power drives and make the lubricant oil atomizing, and the lubricant mist that contains moderate lubrication fluid can be delivered to each part group place of engine, and superfluous lubricant mist removes and can be recycled in the crankshaft room by the lubricant oil recovery area with the lubricating oil that condenses, also can be recycled in the crankshaft room via the aid in guide parts of lubricating oil that is provided with of branch pipe, to alleviate the burden of lubricant oil recovery area, and it is residual to make each spare part not have too much lubricant oil, reduce the loss of lubricant oil simultaneously, and the engine member after simplifying can reduce the engine group and be set as this, can excessively not increase the whole heavy burden of engine and reduce rate of fault, also satisfy 360 degree job requirements, the practicability of significantly promoting small-sized light weight four-journey engine.

By engine lubricating loop device of the present invention, the simple and easy lubricant oil atomising device and the auxiliary recovery unit that can utilize two or more branch pipe and Venturi tubes to constitute, it is few and need not the beneficial effect of extra power output to reach low-cost, less trouble and lubrication oil consumption amount.

Description of drawings

Fig. 1 is the schematic cross-section of the engine lubricating loop device of the embodiment of the invention;

Fig. 2 is the sectional view of the engine lubricating loop device of the embodiment of the invention along A-A line among Fig. 1;

Fig. 3 is the schematic representation of set one-way valve in the engine lubricating loop device of the embodiment of the invention;

Fig. 4 for the engine lubricating loop device of the embodiment of the invention when piston rises, lubricant oil enters the schematic representation of crankshaft room through suction passage, second branch pipe and second Venturi tube;

Fig. 5 is the schematic representation of set lubricant oil recovery area in the engine lubricating loop device of the embodiment of the invention;

Fig. 6 is the schematic representation of engine lubricating loop device lubricant oil mobile route when piston descends of the embodiment of the invention;

Fig. 7 is the schematic representation of engine lubricating loop device lubricant oil mobile route when piston rises of the embodiment of the invention;

Fig. 8 is the engine lubricating loop device schematic representation that piston rises when upright state of the embodiment of the invention;

Fig. 9 is the engine lubricating loop device schematic representation that piston rises when handstand state of the embodiment of the invention;

Figure 10 is the schematic representation of engine lubricating loop device cam double-action mechanism chamber installing overhead camshaft type (OHC) engine of another embodiment of the present invention lubricant oil mobile route during with piston decline.

Description of reference numerals

10 crankshaft room

11 crankcases, 12 through holes

13 bent axles, 131 bearings

132 oil sealings, 14 connecting rods

15 pistons

20 unidirectional valve chambers

21 one-way valves, 211 confinement plates

212 elastic components, 22 oil return tracheaes

30 oil chambers

Cam double-action mechanism chambers 40

41 camshaft chests, 411 guiding walls

42 snorkels, 43 push rods

431 push rod passages, 432 push rod feeder connections

44 camshafts, 441 cams

442 reduction gear, 443 cams

444 deceleration belt pulleys, 45 cam followers

46 gears, 47 belts

50 rocker arm chambers

51 rocker arm body groups, 511 rocking arms

512 portholes, 513 valve spring

60 first branch pipes

61 first Venturi tubes

70 second branch pipes

701 second branch pipes, 71 second Venturi tubes that enter the mouth

72 suction passage, 73 oil suction flexible pipes

731 counterweight members

80 cylinder skulls

81 cylinder blocks, 82 recovery approaches lid

83 lubricant oil recovery areas, 831 lubricant oil reclaim the chamber

832 receive passage 84 lubricant oil reclaims house steward

Oil-gas Separation chambers 85 851 porosity parts

852 Oil-gas Separation chamber through hole 86 respirating tubes

87 firing chambers

Embodiment

Below conjunction with figs. is further specified embodiments of the present invention; following cited embodiment is in order to illustrate the present invention; be not in order to limit scope of the present invention; any personage who is familiar with this skill; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when being as the criterion with patent claim institute confining spectrum.

Please consult Fig. 1 and Fig. 2 simultaneously, Fig. 1 is the schematic cross-section of the engine lubricating loop device of the embodiment of the invention, and Fig. 2 is the sectional view of the engine lubricating loop device of the embodiment of the invention along A-A line among Fig. 1.Engine lubricating loop device of the present invention comprises: crankshaft room 10, unidirectional valve chamber 20, oil chamber 30, cam double-action mechanism chamber 40, rocker arm chamber 50, at least one first branch pipe 60 and at least one second branch pipe 70, wherein, unidirectional valve chamber 20 is connected with crankshaft room 10 and oil chamber 30, first branch pipe 60 is communicated in unidirectional valve chamber 20 and is arranged between the snorkel 42 of cam double-action mechanism chamber 40, first branch pipe 60 and snorkel 42 tube walls connect the place of establishing or its near be provided with first Venturi tube 61; Second branch pipe 70 is arranged in crankshaft room 10 and between the camshaft chest 41 of 40 bottoms, cam double-action mechanism chamber, second branch pipe 70 is provided with second Venturi tube 71, and second branch pipe 70 can be connected with oil suction flexible pipe 73 by suction passage 72, oil suction flexible pipe 73 1 ends are placed in oil chamber 30 and are provided with counterweight member 731 in lubricant oil suction port termination, always remain under the lubricant oil liquid level so as to the suction port that makes oil suction flexible pipe 73; In the process that piston 15 rises or descends, can construct the setting of easy branch pipe and Venturi tube by these, adjust the contained fluid amount of mist of oil, and superfluous mist of oil is reclaimed in reinforcement, and the mist of oil that will contain an amount of fluid is delivered to cam double-action mechanism chamber 40 and rocker arm chamber 50, reach that the lubrication oil consumption amount is few, the purpose of low cost and less trouble, and can satisfy the job requirements of the comprehensive use of 360 degree.

Crankshaft room 10, it is by the formed confined space in the inside of crankcase 11 and cylinder block 81 and piston 15 belows, crankshaft room 10 bottom surfaces offer the through hole 12 that can be communicated with unidirectional valve chamber 20, be provided with bent axle 13 in the crankshaft room 10, and bent axle 13 two ends are arranged with two or more bearings 131 and oil sealing 132 respectively, can rotatablely move in crankshaft room 10 so as to making bent axle 13; In addition, bent axle 13 is equipped with connecting rod 14, connecting rod 14 the other ends then connect with piston 15, by rotatablely moving of bent axle 13, can allow piston 15 produce the motion of rising or descending, and the malleation that forms attractive negative pressure and have pushing force in crankshaft room 10 can circulate in engine so as to making lubricant oil.

Unidirectional valve chamber 20, it is arranged at crankshaft room 10 belows, and is connected with crankshaft room 10 by through hole 12, and the connection of unidirectional valve chamber 20 bottom surfaces is equipped with oil return tracheae 22, the extension of oil return tracheae 22 1 ends is placed in the oil chamber 30, and is communicated with unidirectional valve chamber 20 and oil chamber 30; Be provided with one-way valve 21 in the unidirectional valve chamber 20, one-way valve 21 is made up of confinement plate 211 and the elastic component 212 that is arranged on the confinement plate 211, so as to when piston 15 descends, the lubricant mist that comes from crankshaft room 10 can be because of the pushing force of piston 15 decline generations, and push elastic component 212 in the one-way valve 21 open, allow lubricant mist enter unidirectional valve chamber 20, and be directed downwards by oil return tracheae 22, force feed is to the oil chamber 30, and after piston 15 arrives lower dead point position, during toward rising, one-way valve 21 recovers former locking shape again, to avoid in the lubricant mist selflubricating grease chamber 30 sucked back crankshaft room 10; And when lubricant mist from crankshaft room's 10 force feeds to the process of oil chamber 30, in first branch pipe 60 that unidirectional valve chamber 20 medium and small parts of lubricating oil mists then enter with unidirectional valve chamber 20 is connected (seeing also Fig. 3).In addition, the material of elastic component 212 can be reed or any rubber-like material, and the structure of one-way valve 21 is not as limit, every can in crankshaft room 10, produce malleation the time, mist of oil is sent in unidirectional valve chamber 20 and the oil chamber 30, and when producing negative pressure in crankshaft room 10, the restriction mist of oil all can be applicable to this by the structures that suck in the crankshaft room 10 in unidirectional valve chamber 20 and the oil chamber 30.

Oil chamber 30, it is to be arranged at unidirectional valve chamber 20 confined space nearby, and can be connected with unidirectional valve chamber 20 by oil return tracheae 22.Oil chamber 30 stores liquid lubricating oil, when piston 15 descends, lubricant mist in the crankshaft room 10 can be delivered in the oil chamber 30 through oil return tracheae 22 from unidirectional valve chamber 20, and because the volume of oil chamber 30 is much larger than unidirectional valve chamber 20, the flow velocity of lubricant mist can descend after entering oil chamber 30 moment rapidly, can make the heavier fluid part of contained proportion in the lubricant mist this moment, fall to being recovered in the lubricating oil, and on the lubricating oil liquid level, then leave the oil gas part that contained proportion is lighter in the lubricant mist, the pressure that this oil gas can increase because of 30 inside, oil chamber, and pushed to snorkel 42.In addition, the outlet of oil return tracheae 22 can be arranged at the place, center portion near this oil chamber 30.

Cam double-action mechanism chamber 40, its 431 common spaces that constitute of camshaft chest 41 that is positioned at cam double-action mechanism chamber 40 Lower Halves and the push rod passage that is positioned at cam double-action mechanism chamber 40 first halves of serving as reasons, and push rod feeder connection 432 is arranged at the place that is communicated with of camshaft chest 41 and push rod passage 431.Be equipped with parts such as push rod 43, camshaft 44 and cam follower 45 in the cam double-action mechanism chamber 40, camshaft 44 is made up of cam 441 and reduction gear 442 one, wherein, but cam 441 interlock cam followers 45, reduction gear 442 can be by the gears 46 that connect with aforementioned bent axle 13 and are driven; One end of cam double-action mechanism chamber 40 is communicated with rocker arm chamber 50, its the other end is equipped with snorkel 42, one end of this snorkel 42 is placed in the oil chamber 30, so as in the decline process of piston 15, the lubricated oil gas that oil chamber 30 is produced can be carried toward cam double-action mechanism chamber 40 directions through snorkel 42.On the other hand, the inlet of snorkel 42 can be arranged near place, the center portion of oil chamber 30, no matter so as to this entry position engine all can be remained on the lubricant oil liquid level in running under any angle, and does not allow lubricating oil flow in the snorkel 42.In addition, by reduction gear 442 rotatablely move with cam double-action mechanism chamber 40 in camshaft chest 41 in set guiding walls 411, lubricant mist in the camshaft chest 41 can be guided and is concentrated near push rod feeder connection 432 and second branch pipe inlet 701, with the conveying and recovery effect of strengthening lubricant mist, and the guiding lubricant mist is sent to this rocker arm chamber 50.And according to the configuration and the ways of deceleration of camshaft 44, the engine kind can be included in the overhead porthole (OHV of parts such as being equipped with push rod 43, cam 441, reduction gear 442 and cam follower 45 in the cam double-action mechanism chamber 40, Over HeadValve) tappet-type engine, and overhead camshaft (OHC, Over Head Camshaft) the type engine that in cam double-action mechanism chamber 40, is equipped with cam 443, deceleration belt pulley 444 and belt 47 parts such as (seeing also Figure 10).

Rocker arm chamber 50, it is by cylinder-head cover 80 space with cylinder block 81 be combined intos; be equipped with rocker arm body group 51 in the rocker arm chamber 50; rocker arm body group 51 is made up of parts such as Rocker arm 5 11, porthole 512 and valve springs 513; rocker arm body group 51 is by push rod 43 and cam follower 45 interlocks; also can be by the time-oriented sequential control of the cam 441 that connects with cam follower 45, and the working stroke of fitting piston 15 reaches the control of inlet and outlet timing.

First branch pipe 60, it is arranged between unidirectional valve chamber 20 and the snorkel 42, and can be communicated with unidirectional valve chamber 20 and snorkel 42, and first branch pipe 60 and snorkel 42 tube walls connect the place of establishing or its near be provided with first Venturi tube 61, the material of first Venturi tube 61 is the porosity parts of adsorbable fluid, in addition, the installing quantity of first branch pipe 60 is not defined as one, the demand of its visualization engine lubricating loop device and setting up.Therefore, when piston 15 descends, fraction lubricant mist in the unidirectional valve chamber 20 just can be through first branch pipe 60, enter first Venturi tube 61, relend structure and material characteristic by first Venturi tube 61, contained fluid in the lubricant mist that absorption is passed through, and the lubricating oil that is adsorbed can be with the lubricated oil gas by first Venturi tube 61 mixes via snorkel 42, relend atomizing, and then the imperceptibility lubricant mist that will contain an amount of fluid is delivered to camshaft chest 41 by first Venturi tube 61.

Second branch pipe 70, it is arranged between crankshaft room 10 and the camshaft chest 41, and can be communicated with crankshaft room 10 and the camshaft chest 41 that is positioned at cam double-action mechanism chamber 40 Lower Halves, second branch pipe 70 is arranged at second branch pipe inlet 701 of camshaft chest 41 these ends, be positioned at camshaft chest 41 and push rod feeder connection 432 near, so as to when piston 15 rises, lubricant mist superfluous in the cam double-action mechanism chamber 40 can be entered in second branch pipe 70, and be recycled in the crankshaft room 10, avoid too much lubricant mist to remain on these thermomechanical components of cam double-action mechanism chamber 40 and rocker arm chamber 50 with the fluid that condenses, cause the loss of lubricant oil, also can alleviate the burden of other lubricant mist recovering mechanism simultaneously; In addition, the installing quantity of second branch pipe 70 is not defined as one, the demand of its visualization engine lubricating loop device and setting up.In addition, second branch pipe 70 is provided with second Venturi tube 71 and connects with suction passage 72 and establishes, this suction passage 72 further is equipped with oil suction flexible pipe 73, the one end extension of oil suction flexible pipe 73 is placed in the oil chamber 30, and can be by oil suction flexible pipe 73 at the set counterweight member 731 of its lubricant oil suction port end, weight by this counterweight member 731, make engine under any angle, this oil suction flexible pipe 73 can both free deflection, and the suction port that makes oil suction flexible pipe 73 remains under the lubricant oil liquid level at any time, and can be drawn to fluid at any time.The negative-pressure sucking that is produced by piston 15 uphill process, the superfluous lubricant mist of part can reclaim and enter in second branch pipe 70, and oil suction flexible pipe 73 is also drawn lubricating oil stored in the oil chamber 30 simultaneously, suck in second branch pipe 70 (seeing also Fig. 4) with suction passage 72 through oil suction flexible pipe 73, the negative pressure that lubricant mist in second branch pipe 70 and the lubricating oil in the suction passage 72 can rise and be produced by the atomizing of second Venturi tube 71 and piston 15, and then the lubricant mist of imperceptibility delivered in the crankshaft room 10.

Please continue to consult Fig. 1, Fig. 2 and consult Fig. 5 simultaneously, Fig. 5 is the schematic representation of set lubricant oil recovery area in the engine lubricating loop device of the embodiment of the invention.Except that the recovery channel of above-mentioned second branch pipe 70, between cylinder-head cover above the rocker arm chamber 50 80 and recovery approach lid 82, be provided with lubricant oil recovery area 83, this lubricant oil recovery area 83 reclaims chamber 831 by at least one lubricant oil that is separated out between cylinder-head cover 80 and the recovery approach lid 82 and is formed, and these lubricant oil reclaim between the chamber 831 and can be interconnected, lubricant oil recovery area 83 and two separate space of rocker arm chamber 50 for being separated by fully, two separate space only are connected with two or more recovery approaches 832, hole or the siphunculus of these recovery approaches 832 for offering with respect to each place, corner, diagonal angle up and down of rocker arm chamber 50 in lubricant oil recovery area 83, and no matter which kind of work angle engine is in, at least have a recovery approach 832 and can draw superfluous mist of oil and the fluid that condenses and sink, to satisfy the demand of lubricant oil in all recyclable rocker arm chamber 50 of 360 degree.One termination of lubricant oil recovery area 83 is provided with lubricant oil and reclaims house steward 84, the end that lubricant oil reclaims house steward 84 then connects with crankshaft room 10, so as to being communicated with lubricant oil recovery area 83 and crankshaft room 10, therefore, when piston rises the generation negative pressure, can make rocker arm chamber 50 interior remaining lubricant mists and fluid via each recovery approach 832, enter in the lubricant oil recovery area 83, be collected to lubricant oil again and reclaim house steward 84, and then suck in the crankshaft room 10.In addition, between lubricant oil recovery area 83 and the rocker arm chamber 50 Oil-gas Separation chamber 85 can be set, be provided with porosity parts 851 in the Oil-gas Separation chamber 85 with oil suction effect, and Oil-gas Separation chamber 85 offers two or more Oil-gas Separation chamber through holes 852 near this side of rocker arm chamber 50, also can offer an Oil-gas Separation chamber through hole 852, thereby lubricant mist superfluous in the rocker arm chamber 50 can be entered in the Oil-gas Separation chamber 85 through Oil-gas Separation chamber through hole 852, and in the porosity parts 851 adsorpting lubrication mist of oils contained fluid, and its adsorbed lubricating oil can suck in the lubricant oil recovery area 83 by these recovery approaches 832 that are close to porosity parts 851, reclaim house steward 84 by lubricant oil again, be recycled at last in the crankshaft room 10.And in Oil-gas Separation chamber 85 isolated oil gas, then drain in the air-strainer through respirating tube 86 with blow gas (Blow-by Gas), when the intake stroke of engine, suck in the firing chamber 87 (seeing also Fig. 1) with the air in the external world.

See also Fig. 6, this figure is the schematic representation of engine lubricating loop device lubricant oil mobile route when piston descends of the embodiment of the invention.In the stroke that piston 15 descends, can reduce the volume of crankshaft room 10, and form malleation and produce thrust, impel the lubricant mist in the crankshaft room 10 to enter in the unidirectional valve chamber 20, and because of the difference in size of the caliber and first branch pipe, 60 calibers of oil return tracheae 22, most lubricant mist is pushed through oil return tracheae 22 gets in the oil chamber 30, the lubricant mist of small part then enters in first branch pipe 60.Enter the lubricant mist of oil chamber 30, can descend rapidly in moment because of the flow velocity of lubricant mist, make the heavier fluid part of contained proportion in the lubricant mist, automatically fall and be recovered in the lubricating oil, and on the lubricating oil liquid level in the oil chamber, then leave the oil gas part that contained proportion is lighter in the lubricant mist, the pressure that this oil gas can increase because of 30 inside, oil chamber, and pushed to snorkel 42, and move towards cam double-action mechanism chamber 40 directions; Lubricant mist by first branch pipe 60 can enter first Venturi tube 61 that is made of the oil absorption made from porous material, at this moment, lubricated oil gas from snorkel 42 also can pass through first Venturi tube 61, and mix with the adsorbed fluid of first Venturi tube 61 and its atomizing, deliver to each spare part place of cam double-action mechanism chamber 40 again, and then deliver on each parts group in the rocker arm chamber 50, make these parts can obtain containing lubricant mist lubricated of an amount of fluid.

Please consult Fig. 7, Fig. 8 and Fig. 9 simultaneously, Fig. 7 is the schematic representation of engine lubricating loop device lubricant oil mobile route when piston rises of the embodiment of the invention, Fig. 8 is the engine lubricating loop device schematic representation that piston rises when upright state of the embodiment of the invention, and Fig. 9 is the engine lubricating loop device schematic representation that piston rises when handstand state of the embodiment of the invention.When piston 15 rises, the volume of crankshaft room 10 enlarges, and form negative pressure and produce suction, make that superfluous residual lubricant mist can effectively be inhaled in second branch pipe 70 with the lubricating oil that condenses in the cam double-action mechanism chamber 40, and this moment, oil suction flexible pipe 73 also can be drawn the stored lubricating oil in oil chamber 30 because of negative pressure (suction), and its lubricating oil of drawing can be via connecing the suction passage 72 of establishing with oil suction flexible pipe 73 and entering in second branch pipe 70, relend the negative pressure that rises and produced by the atomizing of second Venturi tube 71 and piston 15, and then the lubricant mist of imperceptibility is delivered in the crankshaft room 10.In addition, when piston 15 continues in the process that rises, the lubricant mist and the lubricating oil that are entered in the rocker arm chamber 50 by cam double-action mechanism chamber 40 can enter in the set lubricant oil recovery chambers 831 83, lubricant oil recovery area through recovery approach 832; And the parts of lubricating oil mist can enter in the Oil-gas Separation chamber 85, and in its set porosity parts 851 adsorpting lubrication mist of oils contained fluid, this fluid can suck lubricant oil recovery areas 83 via being opened in porosity parts 851 recovery approach 832 nearby; All lubricant mists and lubricating oil in this moment lubricant oil recovery area 83 can compile because of the suction that negative pressure produced in the crankshaft room 10 and enter lubricant oil and reclaim house steward 84, are recycled at last in the crankshaft room 10.And when piston 15 carries out down stroke once more, second branch pipe 70 and lubricant oil can be reclaimed lubricant mist that house steward 84 reclaimed and fluid, thereby finish the lubricated circulation of whole engine once again from crankshaft room's 10 force feeds unidirectional valve chamber 20 extremely.On the other hand, because oil suction flexible pipe 73 is placed in this termination of oil chamber 30 and is provided with counterweight member 731, the lubricant oil suction port position of oil suction flexible pipe 73 is remained under the lubricant oil liquid level at any time, no matter therefore engine moves under which kind of angle, oil suction flexible pipe 73 all can be drawn to lubricating oil at any time.

In sum, utilize the engine lubricating loop device of the present invention can be in the process of piston rise and fall, the lubricant mist that will contain an amount of fluid is delivered to each the spare part place that need lubricate in the engine, and can with lubricant oil recovery house steward 84 lubricant mist and the lubricating oil of surplus be recycled in the crankshaft room 10 by second branch pipe 70, lubricant oil recovery area 83, Oil-gas Separation chamber 85, cause the burden of spare part and the loss of lubricant oil to avoid too much lubricant oil; And in the whole lubrication oil circulation process, all need not extra outputting power to drive lubricated oil atomization or recovery, simultaneously engine also meet user demand can be in the comprehensive operation of 360 degree, make the application area of small-sized light weight engine more extensive and use more convenient.

Claims

1, a kind of engine lubricating loop device is characterized in that, comprising:

Crankshaft room, the space that this crankshaft room is constituted for inside and piston below by crankcase, cylinder;

The oil chamber, it is the confined space that stores lubricant oil;

Unidirectional valve chamber, this unidirectional valve chamber connection is arranged between this crankshaft room and this oil chamber, the indoor one-way valve that is provided with of this one-way valve, this unidirectional valve chamber one end connection is equipped with the oil return tracheae, and this oil return tracheae one end extends in this oil chamber;

Cam double-action mechanism chamber, the indoor camshaft chest that is provided with of this cam double-action mechanism, this camshaft chest one end connection is equipped with snorkel, and this snorkel one end extends in this oil chamber, and this snorkel is communicated with this camshaft chest and this oil chamber;

Rocker arm chamber, this rocker arm chamber is connected with this cam double-action mechanism chamber;

At least one first branch pipe, this first branch pipe, one end is connected with this unidirectional valve chamber, and its other end is communicated on this snorkel tube wall, and the connect place of establishing or its of this first branch pipe and this snorkel tube wall nearby are provided with first Venturi tube; And

At least one second branch pipe, this second branch pipe connection is arranged between this camshaft chest and this crankshaft room, also be communicated with on this second branch pipe and be provided with second Venturi tube and oil suction flexible pipe, this oil suction flexible pipe one end is placed in this oil chamber and is equipped with counterweight member, this oil suction flexible pipe is by the weight of this counterweight member, when engine all can free deflection under any angle, and the suction port position of this oil suction flexible pipe remains under the lubricant oil liquid level.

2, engine lubricating loop device according to claim 1 is characterized in that, described first Venturi tube is made of the porosity parts of adsorbable fluid.

3, engine lubricating loop device according to claim 1 is characterized in that, described oil suction flexible pipe connects with this second branch pipe by suction passage.

4, engine lubricating loop device according to claim 1, it is characterized in that, described rocker arm chamber nearby is provided with the lubricant oil recovery area, this lubricant oil recovery area comprises at least one lubricant oil and reclaims the chamber, this lubricant oil recovery area one termination is provided with lubricant oil and reclaims house steward, and this lubricant oil reclaims house steward's one end and then connects with this crankshaft room.

5, engine lubricating loop device according to claim 4 is characterized in that, described lubricant oil recovery area and described rocker arm chamber are the separate space of being separated by.

According to claim 4 or 5 described engine lubricating loop devices, it is characterized in that 6, described lubricant oil recovery area offers two or more recovery approaches, this recovery approach is communicated with described lubricant oil recovery area and described rocker arm chamber.

7, engine lubricating loop device according to claim 6 is characterized in that, is provided with the Oil-gas Separation chamber between described lubricant oil recovery area and this rocker arm chamber, and this Oil-gas Separation chamber is connected with described recovery approach.

8, engine lubricating loop device according to claim 7 is characterized in that, described Oil-gas Separation is indoor to offer the Oil-gas Separation chamber through hole that at least one is connected with described rocker arm chamber.

9, engine lubricating loop device according to claim 8 is characterized in that, the indoor porosity parts that are provided with adsorbable lubricating oil of described Oil-gas Separation.

10, engine lubricating loop device according to claim 1 is characterized in that, described cam double-action mechanism chamber is provided with reduction gear and guiding wall.