CN201354658Y - Engine lubricating device - Google Patents
Engine lubricating device Download PDFInfo
- Publication number
- CN201354658Y CN201354658Y CNU2009200017844U CN200920001784U CN201354658Y CN 201354658 Y CN201354658 Y CN 201354658Y CN U2009200017844 U CNU2009200017844 U CN U2009200017844U CN 200920001784 U CN200920001784 U CN 200920001784U CN 201354658 Y CN201354658 Y CN 201354658Y
- Authority
- CN
- China
- Prior art keywords
- oil
- chamber
- crankshaft room
- engine
- lubricating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to an engine lubricating device, which is characterized in that an oil gas suction pipe is arranged in a lubricating oil chamber and is communicated with a crank chamber and the lubricating oil chamber, a plurality of oil suction holes and a plurality of air suction holes are arranged on the tube wall of a rotatable tube, at least one of the oil suction holes is kept under an oil surface when an engine is in an optional oblique state, and all the air suction holes are kept above the oil surface when the engine is in an optional oblique state, thereby achieving the purpose of proper lubrication. A one-way valve is arranged between the crank chamber and the lubricating oil chamber, which enables most of lubricating oil to be discharged to the lubricating oil chamber form the crank chamber when a piston is in a descending stroke, thereby reducing lubricating oil supply quantity. A one-way valve is also arranged between a rocker arm mechanism chamber and the crank chamber to provide a lubricating oil discharge path for the rocker arm mechanism chamber, thereby preventing over-volume oil caused by oil returning from the crank chamber during a lubricating stage. The engine lubricating device can still obtain proper lubrication when the device is in an oblique using state and can not have problems of insufficient lubricating oil supply or over-volume lubricating oil supply.
Description
Technical field
The utility model relates to a kind of lubricating fitting, refers to a kind of engine lubricating device 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, China 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 most 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, and it can still can obtain proper lubrication under facility tilt user mode, lubricant oil delivery volume deficiency can not take place or supply with excessive situation.
The purpose of this utility model is achieved in that the engine lubricating device comprises a crankshaft room, a camshaft chest, an oil chamber, reaches a rocker arm body chamber.Above-mentioned crankshaft room is connected with the space of piston below, includes crankshaft room's oiler and crankshaft room's oil outlet.
Above-mentioned oil chamber is provided with an oil suction air pipe in order to store a lubricant oil in it.The oil chamber is communicated between crankshaft room's oiler and the oil chamber, also is provided with one first one-way valve between crankshaft room and the oil chamber, and the valve inlet of first one-way valve is communicated with crankshaft room's oil outlet and oil chamber respectively with valve outlet port.
Above-mentioned rocker arm body chamber sees through a communication channel with crankshaft room and is connected, and wherein group is provided with one second one-way valve in the communication channel.The valve inlet of second one-way valve is communicated with rocker arm body chamber and crankshaft room respectively with valve outlet port.
The oil suction air pipe includes a rotatable piping and is pivoted along a cylinder block shaft axis, rotatable tube include be opened on the tube wall more than several oil-sucking holes and be positioned at one of terminal air suction inlet.Under any heeling condition, air suction inlet all remain on the pasta and most oil-sucking holes at least one be maintained under the pasta.
Above-mentioned crankshaft room can by one of lock mutually the upper crankcase body 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 in regular turn one of connect pipe laying road in the oil sump, a connecting tube, and a lower crankcase in the pipe laying road, pipe laying road system is connected in rotatable tube in the oil sump, 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 camshaft chest can see through another communication channel and be connected with this oil chamber.
The utility model has the advantages that, setting by aforementioned oil suction air pipe and two one-way valves, the engine lubricating device 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 can be not indefinite as known fork type lubricant oil delivery volume, can not supply with excessive situation as having as the case before the patent yet.
Description of drawings
The engine lubricating device exploded view of Fig. 1 the utility model one preferred embodiment.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the thin portion view of the rotatable tube of Fig. 1.
Fig. 4 is that rocker arm body chamber lubricant oil reclaims cross-sectional schematic.
Fig. 5 is that camshaft chest/rocker arm body chamber is subjected to the cross-sectional schematic when lubricated.
Fig. 6 is another angle sectional view schematic representation that rocker arm body chamber lubricant oil reclaims.
Fig. 7 is the cross-sectional schematic that camshaft chest lubricant oil reclaims.
The primary component 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
Valve inlet 191,311 valve outlet ports 192,312
Piston rocker arm body chambers 26 25
Rocker arm body group 27 cam gears 28
Bent axle 29 second one-way valves 31
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 sectional view 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 one-body molded 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, and the two locks fixing with bolt.The bottom of upper crankcase body 22 is formed with a depression, and the also independent separately depression that forms in lower crankcase body 23 upper and lower parts.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 one first one-way valve 19 between crankshaft room 11 and the oil chamber 13 in addition, the valve inlet 191 and the valve outlet port 192 of first one-way valve 19 are communicated in crankshaft room's oil outlet 112 and oil chamber 13 respectively, and purpose makes lubricant oil 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 and Fig. 6, be respectively the cross-sectional schematic that different visual angles lower shake-changing arm mechanism chamber lubricant oil reclaims.Rocker arm body chamber 26 sees through a communication channel 14 and is connected with crankshaft room 11, and in communication channel 14 also group be provided with one second one-way valve 31, its group set direction is the direction that exports towards leading to crankshaft room 11, and promptly valve inlet 311 is communicated with rocker arm body chambers 26, and valve outlet port 312 is communicated with crankshaft room 11.Because of the restriction of observation place, location point P and location point Q among Fig. 4 (expression communication channel outlet) are shown as independent separate, and in fact this two location point all is in communication channel 14, can correspond to Fig. 6 and understand its correlation with clearer.
With reference to figure 7, it is the cross-sectional schematic of camshaft chest lubricant oil recovery in addition.Camshaft chest 12 also sees through a communication channel 30 and is communicated with oil chamber 13.Specifically, the upper channel 154 of rotatable tube 15 is connected to the pipeline that is opened in lower crankcase body 23 inside, thus the recovery oil circuit of rocker arm body chamber 26, and the recovery oil circuit of camshaft chest 12 all be to constitute jointly by 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 cross-sectional schematic when it is subjected to lubricate for camshaft chest is observed by the visual angle that is different from Fig. 4.By among the figure as can be known, camshaft chest 12 is for identical when reclaimed with lubricant oil by the oil flow channel when lubricated, promptly reaches through communication channel 30.Offer skill because of above-mentioned box house pipeline and belonged to knownly, no longer describe in detail herein.
With reference to figure 2, Fig. 4 and Fig. 7, 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 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 first 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 with respect to the positive differential pressure of oil chamber 13 also guaranteed the lubricant oil in the former two via communication channel 30, and side opening 155 be back to oil chamber 13, be equivalent to reclaim lubricant oil, the arrow of Fig. 7 is promptly emphasized out the trend of the oil in this stage.
Be noted that simultaneously, this stage is because there is positive differential pressure rocker arm body chamber 26 with respect to crankshaft room 11 equally, so a part of lubricant oil of rocker arm body chamber 26 also can through communication channel 14, and second one-way valve 31 enter crankshaft room 11, just rocker arm body chamber 26 can utilize communication channel 14 to be back to the approach of crankshaft room 11 as lubricant oil, so effectively reaches lubricant oil eliminating purpose.In addition, engine when normal use angle, the lubricant oil of rocker arm body chamber 26/ camshaft chest 12 in this stage also organic membership action of gravity flow back to oil chamber 13 through communication channel 30.
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 first one-way valve 19.
On the other hand, camshaft chest 12 and rocker arm body chamber 26 also can make oil chamber 13 with respect to the Negative Pressure Difference of oil chamber 13 oil is sent to aforementioned two Room from side opening 155, upper channel 154, communication channel 30, reaches lubricated cam gear 28 and rocker arm body group 27 purposes; And simultaneously, second one-way valve 31 in the communication channel 14 has also been brought into play and has been stopped that lubricant oil from the effect that crankshaft room 11 flows to rocker arm body chamber 26, avoids the incorrect change of oil mass many.The arrow of Fig. 5 is promptly emphasized out the trend of this stage oil.
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 oneself should interest field is described to be as the criterion the interest field that the utility model is advocated to apply for a patent, 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;
One oil chamber, in order to store a lubricant oil, be provided with an oil suction air pipe in it, system is communicated between this crankshaft room's oiler and this oil chamber, then be provided with one first one-way valve between this crankshaft room and this oil chamber, the valve inlet of this first one-way valve is communicated with this crankshaft room's oil outlet and this oil chamber respectively with valve outlet port; And
One rocker arm body chamber sees through a communication channel with this crankshaft room and is connected, and group is provided with one second one-way valve in this communication channel, and wherein the valve inlet of this second one-way valve is communicated with this rocker arm body chamber and this crankshaft room respectively with valve outlet port;
Wherein, it is to be pivoted along a cylinder block shaft axis that this oil suction air pipe includes a rotatable tube, this rotatable tube includes most oil-sucking holes that are opened on the tube wall and is positioned at a terminal air suction inlet, under any heeling condition, this air suction inlet all remain on the pasta and should a majority oil-sucking hole at least one be maintained under the pasta.
2. engine lubricating device as claimed in 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 as claimed in claim 2 is characterized in that this a upper crankcase body and a cylinder block are one-body molded.
4. engine lubricating device as claimed in claim 1, it is characterized in that this oil suction air pipe more 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 as claimed in claim 1 is characterized in that this rotatable tube includes C shape pipe.
6. engine lubricating device as claimed in claim 1 is characterized in that this camshaft chest and sees through another communication channel being connected with this oil chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200017844U CN201354658Y (en) | 2009-02-27 | 2009-02-27 | Engine lubricating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200017844U CN201354658Y (en) | 2009-02-27 | 2009-02-27 | Engine lubricating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201354658Y true CN201354658Y (en) | 2009-12-02 |
Family
ID=41410998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200017844U Expired - Fee Related CN201354658Y (en) | 2009-02-27 | 2009-02-27 | Engine lubricating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201354658Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465790A (en) * | 2010-11-08 | 2012-05-23 | 光阳工业股份有限公司 | Diversion structure of crankcase |
| CN103850747A (en) * | 2014-01-13 | 2014-06-11 | 苏州科瓴精密机械科技有限公司 | Four-stroke engine |
| CN106574526A (en) * | 2014-08-27 | 2017-04-19 | 大丰工业株式会社 | Oil feeding member and engine lubricating oil supply mechanism provided with same |
-
2009
- 2009-02-27 CN CNU2009200017844U patent/CN201354658Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465790A (en) * | 2010-11-08 | 2012-05-23 | 光阳工业股份有限公司 | Diversion structure of crankcase |
| CN103850747A (en) * | 2014-01-13 | 2014-06-11 | 苏州科瓴精密机械科技有限公司 | Four-stroke engine |
| CN103850747B (en) * | 2014-01-13 | 2017-02-22 | 苏州科瓴精密机械科技有限公司 | Four-stroke engine |
| CN106574526A (en) * | 2014-08-27 | 2017-04-19 | 大丰工业株式会社 | Oil feeding member and engine lubricating oil supply mechanism provided with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2153030B1 (en) | Lubrication system for a four-stroke engine | |
| US6935297B2 (en) | Lubricating system for 4-cycle engine | |
| US6116205A (en) | Motorcycle lubrication system | |
| CN101270683A (en) | Gas oil separation structure of internal combustion engine crankcase ventilation system | |
| WO2005026504A1 (en) | A small four-stroke gasoline engine with oil mist lubrication | |
| CN201354657Y (en) | Engine lubricating device | |
| KR20010092407A (en) | Handheld type four-cycle engine | |
| CN201354658Y (en) | Engine lubricating device | |
| CN101413412B (en) | Lubrication apparatus of four-stroke engine | |
| CN202788974U (en) | Oil pump oil supply system | |
| US8627809B2 (en) | Engine lubrication method | |
| JP2016196864A (en) | Internal combustion engine | |
| CN101280704B (en) | Arbitrary overturn four-stroke cycle engine | |
| CN201176887Y (en) | Engine lubrication apparatus | |
| TWI242622B (en) | Lubrication device for four-stroke engine | |
| CN212154977U (en) | Mixed fuel four-stroke engine | |
| US20090235894A1 (en) | Lubrication apparatus for engines | |
| JPH10288019A (en) | Lubricating device for four-cycle engine | |
| US20150020760A1 (en) | Four-cycle Internal Combustion Engine | |
| CN204877673U (en) | Vertical axis OHC structure four -stroke engine | |
| TWI388715B (en) | Engine lubrication device | |
| WO2008150222A1 (en) | Lubrication system for a four-stroke engine | |
| CN104989522A (en) | Four-stroke engine of vertical shaft OHC structure | |
| JP2004251231A (en) | Lubricating device for four cycle engine | |
| CN111336033A (en) | Mixed fuel four-stroke engine |
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: 20091202 Termination date: 20140227 |