CN201176887Y - Engine lubrication apparatus - Google Patents
Engine lubrication apparatus Download PDFInfo
- Publication number
- CN201176887Y CN201176887Y CNU2008200050532U CN200820005053U CN201176887Y CN 201176887 Y CN201176887 Y CN 201176887Y CN U2008200050532 U CNU2008200050532 U CN U2008200050532U CN 200820005053 U CN200820005053 U CN 200820005053U CN 201176887 Y CN201176887 Y CN 201176887Y
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- oil
- chamber
- crankshaft room
- lubricant
- lubricating device
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model provides an engine lubricating device, and is characterized by comprising a crankshaft chamber, a cam shaft chamber and an lubricant chamber, wherein the crankshaft chamber is communicated with space under a piston and comprises an oil inlet port and an oil outlet port; an oil gas suction pipeline is arranged in the lubricant chamber, and is communicated between the oil inlet port and the lubricant chamber; a one way valve is arranged between the crankshaft chamber and the lubricant chamber; the crankshaft chamber is communicated with the lubricant chamber through the oil outlet port of the crankshaft chamber; the oil gas suction pipeline comprises a rotatable pipe which is pivoted along the axial lead of a cylinder body; and the rotatable pipe comprises a plurality of oil suction holes arranged on the pipe wall, and an air suction inlet positioned on the tail end of the rotatable pipe, wherein the air suction inlet is always maintained above an oil surface, and at least one of the plurality of the oil suction holes is maintained under the oil surface under any heeling state, so that the aim of suitable lubrication can be achieved. The engine lubricating device can supply proper lubricant to a corresponding chamber on both ascending stroke and descending stroke, and do not have the situations of indefinite lubricant supply as the prior fork type device or excessive lubricant supply.
Description
Technical field
The utility model relates to a kind of engine lubricating device, refers to a kind of lubricating fitting that is applicable to four-journey engine, all can makes engine acquisition proper lubrication under the user mode of differing tilt angles especially.
Background technique
Four-journey engine is the saving of cleaner gaseous emission and fuel oil compared to two-stroke person's advantage.Be subject to environmental regulation, the miniature power unit of the small instruments and tools of agricultural use or leisure usefulness has changed four-journey engine into, for example mowing machine, log splitter.In the above-mentioned application, because of facility may be in any direction activity in when operation, so engine also must under various angles, operate normally, and this also represent the lubrication system need of engine can be under different engine operation angles correctly the supply engine member lubricate.
The lubricating system of hand-held four-journey engine is mostly at present: the lubricant oil of oil sump is subjected to shift fork rotation stirring earlier and atomizes, and then is inhaled into crankcase again with parts such as lubricated bent axle, pistons.Only this stir lubricating system remove can loss power, lower engine's motive power output, more and the oil mass that when facility tilt, can stir because of oil level position change, shift fork also thereby tail off, must be more insufficient even can't reach lubricated purpose so lubricate also.
Taiwan patent announcement I242622 discloses a kind of lubricating fitting of four-journey engine, mainly is to form independently crankshaft room, camshaft chest, and oil chamber at the engine internal body, and cooperates a control to be communicated with the oil gas distributor chamber of each chamber in addition.Above-mentioned oil chamber is storing lubricant oil, and is distributed with an oil suction air pipe, is provided with a plurality of oil-sucking holes everywhere at tube wall, and end is provided with an air suction inlet.By this, rise at piston, when crankshaft room produces negative pressure, utilize the oil gas distributor chamber to connect the oil suction tracheae of crankshaft room and oil chamber, the gas of suction is flowed in pipeline fast, the pressure reduction that produces also can make the lubricant oil atomizing that sucks from oil-sucking hole, enters crankshaft room at last.In downstroke, the oil gas distributor chamber is connected crankshaft room and camshaft chest, and lubricant mist is sent to camshaft chest with lubrication.
But above-mentioned lubricating fitting is comparatively complicated in the design of oil gas distributor chamber, and through observing and emulation, the lubricants capacity that this engine was provided that is lubricated with underbalance effect is in whole lubricated cyclic process, can also want many, therefore still imperfect by actual required lubricants capacity.
The model utility content
The purpose of this utility model provides a kind of engine lubricating device, this device utilize underbalance effect lubricant oil bring to that crankshaft room is lubricated when the up-stroke of piston, to bring to camshaft chest during descending stroke lubricated, simultaneously also in two different strokes, follow the recovery effect, efficiently solve the too much problem of known techniques oil mass.
The purpose of this utility model is achieved in that this engine lubricating device comprises a crankshaft room, a camshaft chest, reaches an oil chamber.Crankshaft room is connected with the space of a piston below, and it includes crankshaft room's oiler and crankshaft room's oil outlet; The oil chamber is in order to store lubricant oil.
Being provided with an oil suction air pipe in the oil chamber, is to be communicated between crankshaft room's oiler and the oil chamber.Then be provided with an one-way valve between above-mentioned crankshaft room and the oil chamber, crankshaft room's nationality is connected with the oil chamber by crankshaft room's oil outlet.
Above-mentioned oil suction air pipe includes a rotatable tube, is to be pivoted along a cylinder block shaft axis.Rotatable tube includes most oil-sucking holes that are opened on the tube wall and is positioned at terminal air suction inlet, and under any heeling condition, air suction inlet all remains on the pasta, most oil-sucking holes then are that one is maintained under the pasta at least.
Above-mentioned crankshaft room can by a upper crankcase body that locks mutually and once crankcase body defined, and upper crankcase body and a cylinder block can be formed in one.
Above-mentioned oil suction air pipe can more comprise pipe laying road in the oil sump that connects in regular turn, a connecting tube, reach pipe laying road in the lower crankcase, and the pipe laying road is connected in rotatable tube in the oil sump, and the pipe laying road is connected in crankshaft room's oiler in the lower crankcase.The rotatable tube of above-mentioned oil suction air pipe can include C shape pipe.
Above-mentioned oil chamber can see through two communication channels respectively with camshaft chest, and a rocker arm body chamber be connected, with the camshaft lubrication chamber, and reclaim lubricant oil.
The utility model has the advantages that: by the setting of aforementioned oil suction air pipe and one-way valve, engine lubricating device of the present utility model all can be supplied with an amount of lubricant oil to corresponding chamber at rising, descending stroke, and four-journey engine is used under different heeling conditions all can obtain proper lubrication, that is the excessive situation of supplying lubricating oil amount can not take place indefinite as known fork type lubricant oil delivery volume, yet.
Description of drawings
Fig. 1 is the engine lubricating device exploded view of the utility model one preferred embodiment.
Fig. 2 is the thin portion view of Fig. 1.
Fig. 3 is the thin portion view of the rotatable tube of Fig. 1.
Fig. 4 is the schematic representation that camshaft chest lubricant oil reclaims.
Fig. 5 is that camshaft chest is subjected to the schematic representation when lubricated.
The primary clustering symbol description
Crankshaft room's 11 crankshaft room's oilers 111
Crankshaft room's oil outlet 112 camshaft chests 12
Oil chamber's 13 communication channels 14,30
Rotatable tube 15 C shapes pipe 15a
Oil-sucking hole 152 lower channels 153
Piston rocker arm body chambers 26 25
Rocker arm body group 27 cam gears 28
Bent axle 29 cylinder block shaft axis X
Crankshaft center line Y
Embodiment
With reference to figure 1 and Fig. 2, it illustrates the engine lubricating device exploded view and the detail drawing of the utility model one preferred embodiment respectively.Present embodiment is applied in a four-journey engine with the engine lubricating device, four-journey engine includes a cylinder block 21, a upper crankcase body 22, once crankcase body 23, an and oil sump 24, wherein upper crankcase body 22 is formed in one with cylinder block 21, but can certainly be designed to independent bulk-breaking.Lower crankcase body 23 is corresponding with upper crankcase body 22 shapes, the two be lock with bolt fixing.The bottom of upper crankcase body 22 is formed with a depression, and depression is formed at lower crankcase body 23 tops.The upper recess of the undercut of upper crankcase body 22 and lower crankcase body 23 defines a crankshaft room 11 jointly; The bottom of lower crankcase body 23 then defines an oil chamber 13 jointly with oil sump 24.One bent axle 29 is mounted in the crankshaft room 11, and when engine running, bent axle 29 is rotated motion.Be provided with a piston 25 in the cylinder block 21, crankshaft room 11 and with the inner space of cylinder block 21, promptly the space of piston 25 belows is connected.Include ccontaining the camshaft chest 12 of cam gear 28, and ccontaining the rocker arm body chamber 26 of rocker arm body group 27 in the cylinder block 21 in addition, this two Room is directly connected, wherein rocker arm body group 27 is that power is linked to aforementioned cam gear 28, and reaches fuel oil and intake and exhaust control with the working stroke of time-histories control mode fitting piston 25.
The engine lubricating device comprises above-mentioned crankshaft room 11, camshaft chest 12, reaches oil chamber 13.Crankshaft room 11 includes crankshaft room's oiler 111 and crankshaft room's oil outlet 112.Oil chamber 13 is used to store lubricant oil.Also be provided with an oil suction air pipe in the oil chamber 13, see through the oil suction air pipe and be connected with crankshaft room 11.Particularly, the oil suction air pipe comprise in regular turn pipe laying road 16 in the rotatable tube 15 that connects, the oil sump, a connecting tube 17, and a lower crankcase in pipe laying road 18.
It should be noted that in the present embodiment that the setting of oil-sucking hole 152 also meets: under a plane angle, all oil-sucking holes 152 all are positioned at the outer most edge place of rotatable tube 15.The preferably, this plane is the plane that is made of cylinder block shaft axis X and crankshaft center line Y, because this plane is the plane that engine is just being put.And by this kind oil-sucking hole configuration, the function of " engine all can obtain proper lubrication under the user mode of differing tilt angles " that the utility model is emphasized is easier realization, and Fig. 2 can know and finds out above-mentioned special oil-sucking hole configuration relation.
Be provided with an one-way valve 19 between crankshaft room 11 and the oil chamber 13 in addition, crankshaft room 11 is connected with oil chamber 13 by crankshaft room's oil outlet 112, and purpose is to make lubricant oil to have a path can be back to oil chamber 13 from crankshaft room 11.
With reference to figure 3, it illustrates the detailed view of rotatable tube 15.Rotatable tube 15 comprises a C shape pipe 15a and a straight tube 15b, and wherein relative two ends of straight tube 15b are concaved with a separate upper channel 154, reach a lower channel 153, and lower channel 153 is communicated with C shape pipe 15a, and upper channel 154 is connected with a side opening 155.The rotation of rotatable tube 15 promptly is that C shape pipe 15a is that pivot rotates with straight tube 15b.Preferably, side opening 155 is positioned near position, center, oil chamber and makes it a little more than pasta.
With reference to figure 4, the schematic representation that it reclaims for camshaft chest lubricant oil.Oil chamber 13 sees through a communication channel 14 and is connected with rocker arm body chamber 26, and the dashed region segment table shows that this passage walks around and be not communicated with camshaft chest 12.The upper channel 154 of rotatable tube 15 is to be connected to the pipeline that is opened in lower crankcase body 23 inside, that is above-mentioned communication channel 14 is to be made of jointly several pipelines that the upper channel 154 of rotatable tube 15 and lower crankcase body 23, upper crankcase body 22, cylinder block 21 inside are offered.
With reference to figure 5, the schematic representation when it is subjected to lubricate for camshaft chest is observed by the visual angle that is different from Fig. 4.Oil chamber 13 also sees through another communication channel 30 and is communicated with camshaft chest 12, that is is extended with above-mentioned communication channel 30 from upper channel 154 places of rotatable tube 15 equally.In the present embodiment, the making of this communication channel 30 equally also is to offer several pipelines that are connected in each box house to constitute.Because this kind box house pipeline is offered skill and has been belonged to knownly, no longer describes in detail herein.
With reference to figure 2 and Fig. 4, when piston 25 during in upward stroke, crankshaft room 11 produces negative pressure.Because of the effect of negative pressure, suck gas by air suction inlet 151 in the oil suction tracheae, gas can make the lubricant oil atomizing that enters oil-sucking hole 152 at the mobile pressure reduction that is produced of narrow pipeline high speed.Atomized lubrication oil gas in the oil chamber 13 will arrive crankshaft room 11 via the oil suction air pipe, and it is lubricated that internal works is obtained, and Fig. 2 represents that promptly piston is in ascent stage.This moment, lubricant oil can not flow back to oil chamber 13 from one-way valve 19 yet because of the relation of pressure reduction.On the other hand, camshaft chest 12 and rocker arm body chamber 26 also can make the lubricated oil gas in the former two be back to oil chamber 13 via communication channel 14, side opening 155 with respect to the positive differential pressure of oil chamber 13, be equivalent to reclaim lubricant oil, the arrow of Fig. 4 is promptly emphasized out the oil gas trend in this stage.In addition, engine when normal use angle, the lubricant oil of camshaft chest 12 and rocker arm body chamber 26 in this stage also organic membership action of gravity flow back to oil chamber 13 through communication channel 14.
With reference to figure 2 and Fig. 5.What need to specify is, though Fig. 2 be the schematic representation of piston in upward stroke, and the running of the engine lubricating that herein only is the same structure that utilizes Fig. 2 so that downstroke to be described.When piston 25 during in descending stroke, see through and structure identical shown in Fig. 2, crankshaft room 11 produces malleations.The effect of malleation makes the lubricant oil of crankshaft room 11 be flow back to oil chamber 13 in a large number from one-way valve 19.On the other hand, camshaft chest 12 and rocker arm body chamber 26 also can make in the oil chamber 13 oil gas be sent to aforementioned two Room from side opening 155, upper channel 154, communication channel 30 with respect to the Negative Pressure Difference of oil chamber 13, reach lubricated cam gear 28 and rocker arm body group 27 purposes, the arrow of Fig. 5 is promptly emphasized out the oil gas trend in this stage.Fig. 5 also demonstrates rocker arm body chamber 26 simultaneously and utilizes the approach of communication channel 14 as backflow in addition.
Because of belonging to positive drive type, lubricates the utility model, that is utilize underbalance effect lubricant oil bring to that crankshaft room is lubricated when the up-stroke of piston, to bring to camshaft chest during descending stroke lubricated, simultaneously also in two different strokes, follow the recovery effect, efficiently solve the too much problem of known techniques oil mass.
The foregoing description is only given an example for convenience of description, and the interest field that the utility model is advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (6)
1. engine lubricating device is characterized in that comprising:
One crankshaft room is to be connected with the space of piston below, includes crankshaft room's oiler and crankshaft room's oil outlet;
One camshaft chest; And an oil chamber, in order to store a lubricant oil;
Wherein, be provided with an oil suction air pipe in this oil chamber, be to be communicated between this crankshaft room's oiler and this oil chamber, then be provided with an one-way valve between this crankshaft room and this oil chamber, crankshaft room's nationality is connected with the oil chamber by crankshaft room's oil outlet, wherein this oil suction air pipe includes a rotatable tube and is pivoted along a cylinder block shaft axis, this rotatable tube includes most oil-sucking holes that are opened on the tube wall, an and air suction inlet that is positioned at end, under any heeling condition, this air suction inlet all remains on the pasta, and should a majority oil-sucking hole at least one be maintained under the pasta.
2. engine lubricating device according to claim 1, it is characterized in that this crankshaft room be by a upper crankcase body that locks mutually and once crankcase body defined.
3. engine lubricating device according to claim 2 is characterized in that this a upper crankcase body and a cylinder block are one-body molded.
4. engine lubricating device according to claim 1, it is characterized in that this oil suction air pipe also comprises pipe laying road in the oil sump that connects in regular turn, a connecting tube, reaches pipe laying road in the lower crankcase, the pipe laying road is connected in this rotatable tube in this oil sump, and the pipe laying road is connected in this crankshaft room's oiler in this lower crankcase.
5. engine lubricating device according to claim 1 is characterized in that this rotatable tube includes C shape pipe.
6. engine lubricating device according to claim 1, it is characterized in that this oil chamber and see through two communication channels respectively with this camshaft chest, and a rocker arm body chamber be connected, with lubricated this camshaft chest, and reclaim this lubricant oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200050532U CN201176887Y (en) | 2008-04-03 | 2008-04-03 | Engine lubrication apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200050532U CN201176887Y (en) | 2008-04-03 | 2008-04-03 | Engine lubrication apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201176887Y true CN201176887Y (en) | 2009-01-07 |
Family
ID=40216906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200050532U Expired - Fee Related CN201176887Y (en) | 2008-04-03 | 2008-04-03 | Engine lubrication apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201176887Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428255A (en) * | 2009-09-30 | 2012-04-25 | 日立工机株式会社 | Four-cycle engine, bush cutter and engine-driven tool having same |
-
2008
- 2008-04-03 CN CNU2008200050532U patent/CN201176887Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428255A (en) * | 2009-09-30 | 2012-04-25 | 日立工机株式会社 | Four-cycle engine, bush cutter and engine-driven tool having same |
| CN102428255B (en) * | 2009-09-30 | 2014-03-26 | 日立工机株式会社 | Four-cycle engine, bush cutter and engine-driven tool having same |
| US8701621B2 (en) | 2009-09-30 | 2014-04-22 | Hitachi Koki Co., Ltd. | Four-cycle engine, bush cutter and engine-driven tool having same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20160403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |