CN202788974U - Oil pump oil supply system - Google Patents

Oil pump oil supply system Download PDF

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Publication number
CN202788974U
CN202788974U CN 201220283782 CN201220283782U CN202788974U CN 202788974 U CN202788974 U CN 202788974U CN 201220283782 CN201220283782 CN 201220283782 CN 201220283782 U CN201220283782 U CN 201220283782U CN 202788974 U CN202788974 U CN 202788974U
Authority
CN
China
Prior art keywords
oil
pump
chamber
supply gallery
oil supply
Prior art date
Application number
CN 201220283782
Other languages
Chinese (zh)
Inventor
孔钊
郭宁
陈干
冯可亚
Original Assignee
苏州科瓴精密机械科技有限公司
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Application filed by 苏州科瓴精密机械科技有限公司 filed Critical 苏州科瓴精密机械科技有限公司
Priority to CN 201220283782 priority Critical patent/CN202788974U/en
Application granted granted Critical
Publication of CN202788974U publication Critical patent/CN202788974U/en

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Abstract

The utility model discloses an oil pump oil supply system. The oil pump oil supply system comprises oil pumps providing pressure sources, a first oil supply channel communicated with an oil receiver and a crankcase. The oil pumps are arranged inside a pump chamber, and lubricating oil enters the crankcase from the first oil supply channel. The oil supply system of the oil pump further comprises a second oil supply channel communicated with a rocking arm chamber and the pump chamber, and the oil pumps are connected in series in the first oil supply channel and the second oil supply channel. According to the oil pump oil supply system, a four-stroke engine is capable of discharging the lubricating oil inside an oil-gas separation chamber when the four-stroke engine is used in an inclined or inversed mode.

Description

The oil pump feed system

Technical field

The utility model relates to a kind of engine fuel system, relates more specifically to utilize the system of oil pump supplying lubricating oil.

Background technique

As the hand-held shears for lawns take vegetation as object (cut-off machine) and Backpack power machine, traditional two-stroke and four-stroke small-sized universal engine have been widely used as driving operating personnel oneself motor portable or that bearing the working machine that carries out operation.Because it is more and more stricter that the pollutant emission regulation becomes, so the demand that driving source is replaced by four stroke engine from two-stroke improves day by day, yet four stroke engine has more complicated lubrication system, this so that motor when moving with the angle of inclination, not too work.The lubricated main design problem that becomes each motor manufacturer only has Honda Company to be used for the four stroke engine that can work of batch production by the EP835987 patented technology now under various angles of inclination.This technology adopts Special oil tank around being installed in rotating blade on the bent axle producing mist of oil, but designed engines is wider in this way, and heavier, cost is higher.The motor that also has adopts the lubricated crankcase of the mode of ejection lubricant oil, but jet is located on the bent axle usually, causes bent axle upper cylinder inwall not obtain sufficient lubricant oil, affects lubrication effect.

In the prior art, the four stroke engine of utilizing the crankcase positive and negative pressure to change is widely used, but its shortcoming is easily to cause crankcase for shortage of oil in engine crankcase gas leakage or other situations, and engine running is gone wrong, and is therefore not good for oil-proofness.

The model utility content

The utility model provides a kind of four stroke engine that makes tilting or be inverted the motor that can both fast the lubricant oil in the oil-gas separation chamber be discharged when using in order to address the above problem, and it is achieved through the following technical solutions:

A kind of oil pump feed system, comprise the oil pump that pressure source is provided, described oil pump is located in the pump chamber, the first oil supply gallery that is communicated with food tray and crankcase, lubricant oil enters crankcase by the first oil supply gallery, described oil pump feed system also comprises the second oil supply gallery that is communicated with rocker arm chamber and pump chamber, and described oil pump is connected in the first oil supply gallery and the second oil supply gallery.

Preferably, described oil pump feed system also comprises the cam chamber cap, and described the first oil supply gallery and the second oil supply gallery have at least part to be arranged on cam chamber to cover.

Preferably, the described cam chamber that is located at covers and is provided with the first filler opening and the second filler opening, and the lubricant oil in described the first oil supply gallery and the second oil supply gallery enters pump chamber by the first filler opening and the second filler opening respectively.

Preferably, described cam chamber covers and is provided with oil outlet, and the lubricant oil in the pump chamber is discharged by the oil outlet that cam chamber covers.

Preferably, described the first oil supply gallery comprises camshaft, is provided with through hole in the described camshaft, and described oil outlet and through hole are communicated with.

Preferably, described oil pump is located in the cam chamber.

Preferably, described oil pump is set on the camshaft.

Preferably, described oil pump feed system comprises pump chamber plate and pump chamber lid, and described pump chamber is made of pump chamber plate and pump chamber lid.

Preferably, described oil pump feed system also comprises accessory channel, and described accessory channel is communicated with oil outlet and food tray.

Preferably, described the first oil supply gallery one end is jet, and jet is arranged on the cylinder sidewall, and is positioned at piston lower dead centre below.

The oil pump for engine oil supply system that the utility model discloses can make motor upright or stand upside down and utilize when using that oil pump is continual to provide running required lubricant oil to motor, guarantees that motor can stable operation.

Description of drawings

Fig. 1 is the utility model embodiment's sectional view.

Fig. 2 is the schematic representation of the utility model embodiment lubrication system.

Fig. 3 is the utility model embodiment's sectional view.

Fig. 4 is the sectional view of the utility model embodiment piston when lower dead centre.

Fig. 5 is the worm's eye view of the utility model embodiment cylinder.

Fig. 6 is the plan view of the utility model embodiment cylinder block.

Fig. 7 is the worm's eye view of the utility model embodiment cylinder block.

Fig. 8 is another embodiment's of the utility model sectional view.

Fig. 9 is another embodiment's of the utility model sectional view.

Figure 10 is another embodiment's of the utility model stereogram.

Figure 11 is another embodiment's of the utility model exploded view.

Embodiment

Come the utility model is described further below in conjunction with specific embodiment.

As shown be the four stroke engine of the utility model preferred implementation, comprise crankcase 1, food tray 2, cam chamber 3, rocker arm chamber 4 and air filter 6.Food tray 2 is used for storing lubricant oil, and food tray 2 tops are crankcase 1, and bent axle 10 is arranged in the crankcase 1 and engages with piston 7 in the cylinder 8,, food tray 2 and crankcase 1 are by oil supply gallery 21 connections.The below of crankcase 1 is provided with distributor chamber 5, crankcase is communicated with by the first oil transportation channel 15 with distributor chamber, distributor chamber 5 can carry out Oil-gas Separation, the liquid lubricant oil of separating flows into food tray 2 by separation chamber's small hole at bottom part, remaining gaseous state lubricant oil passes through, and the second oil transportation channel 53 enters cam chamber 3.Cylinder 8 tops are provided with rocker arm chamber 4, and the lubricant oil in the cam chamber 3 enters rocker arm chamber 4 by the 3rd oil transportation channel 34, and the parts in the rocker arm chamber 4 are lubricated.Lubricant oil in the rocker arm chamber 4 is got back to crankcase 1 by drainback passage 41, be provided with top-portion apertures 411 and base apertures 410 in the described rocker arm chamber, when motor just immediately, if the lubricated pasta in the rocker arm chamber 4 is higher than base apertures 410, then lubricant oil can enter drainback passage 41 by top-portion apertures 410, then enters crankcase.When motor was inverted, if the lubricated pasta in the rocker arm chamber 4 is higher than top-portion apertures 411, then lubricant oil entered drainback passage 4 by top-portion apertures 411.。Gas in the rocker arm chamber 4 enters air filter 6 by vent passage 46.Lubricant oil in the air filter 6 enters crankcase 1 by returning oily passage 61.The engine lubrication system of present embodiment (such as Fig. 2), utilize the motion of piston 7 to make the pressure in the crankcase produce checker, make lubricant oil in oil supply gallery 21, the first oil transportation channel 15, the second oil transportation channel 53, the 3rd oil transportation channel 34, drainback passage 41, vent passage 46, return in the oily passage 61 circulation, lubricant oil is provided for the region of interest of motor.

In the lubrication system of motor, injection system is that the lubricant oil that will store in the food tray is introduced in the crankcase, injection system comprises oil supply gallery 21, the end of oil supply gallery 21 in food tray 2 is provided with oil suction section 215 (such as Fig. 1), described oil suction section 215 can tilt or inverted direction is rolled along with motor, guarantees the lubricant oil that motor can both be drawn onto in the food tray 2 in any position oil suction section 215.Oil supply gallery 21 the other ends are jets 210, jet 210 on the sidewall of cylinder 8 and be positioned at piston 7 lower dead centres below, that is to say, moving up and down of piston 7 can't shelter from jet 210, jet 210 is in open state always, and the lubricant oil of drawing from food tray 2 sprays into crankcase 1 from jet 210.When the pressure in the crankcase 1 during less than the pressure in the food tray 2, the lubricant oil in the food tray 2 spray into crankcase by jet.Because jet 210 in the higher position of the sidewall of cylinder 8, is higher than the position of bent axle simultaneously, so the oil of jet 210 ejection makes on cylinder 8 inwalls and has more large-area lubricant oil, simultaneously, makes that associated components has more lubricant oil on the bent axle.Described oil supply gallery 21 comprises annular pass 211, and annular pass 211 is spliced by the groove that is arranged on cylinder 8 and the cylinder block 9 respectively.The groove of the annular pass 211 on the cylinder 8 is provided with slotted eye 214, the groove of the annular pass 211 on the cylinder block 9 is provided with lower slotted eye 213, oil in the oil supply gallery 21 enters annular pass 211 by lower slotted eye 213, flow to upper slotted eye 214 around the annular pass, lubricant oil flows into camb cap passage 216 from upper slotted eye 214, described camb cap passage 216 is the part of oil supply gallery 21, camb cap passage 216 is arranged on (as shown in Figure 3) on the cam chamber cap 31, described cam chamber cap 31 is cover plates that cover on the cam chamber 3, and the lubricant oil of process camb cap passage 216 sprays into crankcase by the passage on the camshaft 502 through jet.Oil supply gallery 21 also is provided with the first one-way valve 212, the first one-way valves 212 and opens during for negative pressure in crankcase 1, closes during for malleation in the crankcase 1.Described the first one-way valve 212 be located at the coaxial cavity 302 of camshaft hole 301 in, described cavity 302 is on cam chamber cap 31, cavity 302 all is cylindrical hole with camshaft hole 301, their diameter is about equally.Therefore, when machining cam axis hole 301, as long as process a little more deeply, just can form cavity 302, then the first one-way valve 212 can be placed cavity 302, reduce difficulty of processing, the convenient manufacturing.

It is another mode of execution of the present utility model shown in Fig. 8-11, the motor of present embodiment has oil pump 11, described oil pump is positioned at cam chamber 3 ', be provided with pump chamber lid 36 and pump chamber plate 37 in the cam chamber 3 ', described oil pump 11 is positioned at the pump chamber of pump chamber lid 36 and pump chamber plate 37 formations, described pump chamber comprises the first oil pocket 371, the second oil pockets 372 and the 3rd oil pocket 373, and described oil pocket 371,372,373 is the selenodont chamber.Described oil pump is rotor pump, comprises internal rotor 115 and external rotor 116.Described motor has the first oil supply gallery 21 ' that is communicated with food tray 2 ' and crankcase 1 ', and oil pump 11 is connected in the first oil supply gallery 21 ', and oil pump and cam 50 are set on the camshaft 502, and oil pump provides power for the circulation of lubricant oil.Described the first oil supply gallery 21 ' comprises first passage 216 ', and first passage 216 ' is located on the cam chamber cap 31 ', and the lubricant oil that flows through first passage 216 ' enters the first oil pocket 371 by the first filler opening 210 '.Be communicated with by the second oil supply gallery 41 ' between described pump chamber and the rocker arm chamber 4 '.Described oil pump 11 is connected in the second oil supply gallery 41 ', when the lubricated pasta in the rocker arm chamber 4 ' is higher than the oilhole (such as first embodiment's top-portion apertures and base apertures) of the second oil supply gallery 41 ' in rocker arm chamber 4 '; the lubricant oil in the rocker arm chamber 4 ' can be discharged rocker arm chamber by the second oil supply gallery 41 '; can prevent that thus lubricant oil too much causes the motor operation to go wrong in the rocker arm chamber; the second oil supply gallery 41 ' comprises second channel 415 '; second channel 415 ' is located on the cam chamber cap 31 ', and the lubricant oil in the rocker arm chamber 4 ' enters the second oil pocket 372 by second channel 415 ' from the second filler opening 410 '.When engine operation, the rotation of bent axle drives the first gear 101 that is arranged on the bent axle, the first gear 101 drives plastic gear 501 and rotates, plastic gear 501 and cam 50 are one, cam 50 drives the oil pump running, and lubricant oil is entered the first grease chamber 371 of oil pump 11 by the first filler opening 210 ' by the first oil supply gallery 21 '.Simultaneously, when if the pasta in the rocker arm chamber 4 ' is higher than the oilhole height of the second oil supply gallery 41 ' in rocker arm chamber; the lubricant oil in the rocker arm chamber enters oil pump the first grease chamber 371 by the second oil supply gallery 41 ' upper the second filler opening 410 '; oil pump rotates lubrication pressure to the three grease chambeies 373 in the first grease chamber and the second grease chamber; the lubricant oil in the 3rd grease chamber 373 are discharged from oil outlet 110; the lubricant oil part of discharging from oil outlet 110 is from accessory channel 12 ' the inflow food tray 2 ' of connection food tray 2 ' and oil outlet 110; another part lubricant oil enters through hole 112 by the 3rd filler opening 111 and enters crankcase; described the 3rd filler opening 111 is on through hole 112, and described through hole 112 is coaxial with camshaft.Described accessory channel 12 ' can be regulated the lubricants capacity that enters crankcase by the 3rd filler opening 111, prevents that too much lubricant oil from entering crankcase.When the upright work of motor, the first oil supply gallery is main supply oil passage, constantly lubricant oil must be transported to pump chamber, only have when the lubricated pasta in the rocker arm chamber is higher than the second oil supply gallery and is located at oilhole height in the rocker arm chamber, the second oil supply gallery is transported to pump chamber with lubricant oil; When motor inversion work, this moment, food tray was above rocker arm chamber, pasta in the food tray may be lower than the filler opening height of the second oil supply gallery in food tray, therefore may oil suction, the interior lubricated pasta of rocker arm chamber this moment is certain to be higher than the oilhole height (such as in Fig. 2 oilhole 411) of the second oil supply gallery in rocker arm chamber, therefore the second oil supply gallery is main supply oil passage, constantly lubricant oil must be transported to pump chamber, thus the utility model can guarantee motor upright or when being inverted lubrication system can both work.Lubricant oil in the crankcase flow to the path of cam chamber, rocker arm chamber, air filter, food tray by oil circuit identical with the first embodiment, do not repeat them here.Utilize oil pump feed can guarantee that lubricant oil is continual from food tray infeed crankcase, make lubrication system more reliable and more stable, avoided since the positive/negative-pressure that utilizes crankcase to produce may exist when coming fuel feeding in gas leakage or other situations, affect crankcase pressure the time, may produce lubricant oil confession shortage of oil.

The oil supply system that the utility model discloses, oil circuit is simple, and low cost of manufacture can still have good lubrication effect when motor tilts or is inverted.Above-mentioned mode of execution is preferred implementation of the present utility model, any conversion that does not break away from the utility model spirit or replace all in protection domain of the present utility model.

Claims (10)

1. oil pump feed system, comprise the oil pump that pressure source is provided, described oil pump is located in the pump chamber, the first oil supply gallery that is communicated with food tray and crankcase, lubricant oil enters crankcase by the first oil supply gallery, it is characterized in that: described oil pump feed system also comprises the second oil supply gallery that is communicated with rocker arm chamber and pump chamber, and described oil pump is connected in the first oil supply gallery and the second oil supply gallery.
2. oil pump feed as claimed in claim 1 system is characterized in that: described oil pump feed system also comprises the cam chamber cap, and described the first oil supply gallery and the second oil supply gallery have at least part to be arranged on cam chamber to cover.
3. oil pump feed as claimed in claim 2 system, it is characterized in that: the described cam chamber that is located at covers and is provided with the first filler opening and the second filler opening, and the lubricant oil in described the first oil supply gallery and the second oil supply gallery enters pump chamber by the first filler opening and the second filler opening respectively.
4. oil pump feed system as claimed in claim 2 or claim 3, it is characterized in that: described cam chamber covers and is provided with oil outlet, and the lubricant oil in the pump chamber is discharged by the oil outlet that cam chamber covers.
5. oil pump feed as claimed in claim 4 system, it is characterized in that: described the first oil supply gallery comprises camshaft, is provided with through hole in the described camshaft, described oil outlet and through hole are communicated with.
6. oil pump feed as claimed in claim 4 system, it is characterized in that: described oil pump is located in the cam chamber.
7. oil pump feed as claimed in claim 5 system, it is characterized in that: described oil pump is set on the camshaft.
8. oil pump feed as claimed in claim 4 system is characterized in that: described oil pump feed system comprises pump chamber plate and pump chamber lid, and described pump chamber is made of pump chamber plate and pump chamber lid.
9. oil pump feed as claimed in claim 4 system is characterized in that: described oil pump feed system also comprises accessory channel, and described accessory channel is communicated with oil outlet and food tray.
10. oil pump feed as claimed in claim 1 system, it is characterized in that: described the first oil supply gallery one end is jet, and jet is arranged on the cylinder sidewall, and is positioned at piston lower dead centre below.
CN 201220283782 2012-06-15 2012-06-15 Oil pump oil supply system CN202788974U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220283782 CN202788974U (en) 2012-06-15 2012-06-15 Oil pump oil supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220283782 CN202788974U (en) 2012-06-15 2012-06-15 Oil pump oil supply system

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277166A (en) * 2013-06-17 2013-09-04 苏州科瓴精密机械科技有限公司 Four-stroke engine
WO2013185472A1 (en) * 2012-06-15 2013-12-19 苏州科瓴精密机械科技有限公司 Oil pump oil supply system
WO2013185471A1 (en) * 2012-06-15 2013-12-19 苏州科瓴精密机械科技有限公司 Oil injection system of engine
WO2013185477A1 (en) * 2012-06-15 2013-12-19 苏州科瓴精密机械科技有限公司 Lubrication system for four-stroke engine
CN103883424A (en) * 2014-03-26 2014-06-25 江门天钇金属工业有限公司 Motorcycle engine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013185472A1 (en) * 2012-06-15 2013-12-19 苏州科瓴精密机械科技有限公司 Oil pump oil supply system
WO2013185471A1 (en) * 2012-06-15 2013-12-19 苏州科瓴精密机械科技有限公司 Oil injection system of engine
WO2013185477A1 (en) * 2012-06-15 2013-12-19 苏州科瓴精密机械科技有限公司 Lubrication system for four-stroke engine
CN103511017A (en) * 2012-06-15 2014-01-15 苏州科瓴精密机械科技有限公司 Oil supplying system of oil pump
CN103511017B (en) * 2012-06-15 2016-12-21 苏州科瓴精密机械科技有限公司 Oil pump feed system
CN103277166A (en) * 2013-06-17 2013-09-04 苏州科瓴精密机械科技有限公司 Four-stroke engine
CN103277166B (en) * 2013-06-17 2016-06-08 苏州科瓴精密机械科技有限公司 Otto cycle engine
CN103883424A (en) * 2014-03-26 2014-06-25 江门天钇金属工业有限公司 Motorcycle engine
CN103883424B (en) * 2014-03-26 2017-01-18 江门天钇金属工业有限公司 Motorcycle engine

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130313

Termination date: 20170615