CN201141317Y - Lubrication apparatus of four-stroke engine - Google Patents

Lubrication apparatus of four-stroke engine Download PDF

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Publication number
CN201141317Y
CN201141317Y CNU200720151238XU CN200720151238U CN201141317Y CN 201141317 Y CN201141317 Y CN 201141317Y CN U200720151238X U CNU200720151238X U CN U200720151238XU CN 200720151238 U CN200720151238 U CN 200720151238U CN 201141317 Y CN201141317 Y CN 201141317Y
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CN
China
Prior art keywords
engine
oil
crankcase
box
communicated
Prior art date
Application number
CNU200720151238XU
Other languages
Chinese (zh)
Inventor
杨承宗
陈俊钦
Original Assignee
正峰工业股份有限公司
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Filing date
Publication date
Application filed by 正峰工业股份有限公司 filed Critical 正峰工业股份有限公司
Priority to CNU200720151238XU priority Critical patent/CN201141317Y/en
Application granted granted Critical
Publication of CN201141317Y publication Critical patent/CN201141317Y/en

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Abstract

The utility model discloses a four-stroke engine lubricating device which comprises an oil tank, a crank shaft box, a gear box, a rocker chamber and an air oil filter; a crank shaft combined with a clump weight is arranged in the crank shaft box and connected with a piston arranged in an air cylinder. When the piston of the engine strokes upwards, the crank shaft box extracts the engine oil to the crank shaft box from the oil tank, the rocker chamber and the air oil filter; when the piston strokes downwards, the engine oil and the waste gas in the crank shaft box are pressed into the gear box to enable the gear box to generate the positive pressure; the engine oil and the waste gas are pressed into the oil tank and the rocker chamber; the waste gas which enters the oil tank generates the positive pressure to be guided into the air oil filter for oil gas separation; the separated gas is guided into the air cylinder for combustion; the separated engine oil is extracted into the crank shaft box in the next stroke so that the lubrication on the engine from the engine oil and the circulation are realized. When the engine is inclined or arranged reversely, the four-stroke engine lubricating device can limit the engine oil in the oil tank and avoid large quantity of engine oil from entering the combustion chamber to cause the flameout of the engine; meanwhile, the lubricating function is maintained.

Description

The four-journey engine lubricating fitting

Technical field

The utility model relates to a kind of lubricating fitting that is applied to four-journey engine.

Background technique

Existing small-sized two strokes, four-journey application engine are used widely on gardening, farm implements and industrial use, as mowing machine, refining saw, rooter, generator, portable hedge cut, the back type sprayer ... etc.But because of of the requirement of disposal of pollutants rules to the environmental protection increasingly stringent; two stroke applications engines are faced with significant challenge; and four-journey engine becomes one of following application engine main flow; but under the lubricating condition restriction of four-journey engine; want to reach not limited by any angle of inclination; and can reach the function of normal operation, also be the difficult problem that breakthrough is done one's utmost to study by each producer.At present in this technology part, ripe and manufacture product in a large number with the tool of HONDA company.Yet want four-journey engine is reached under the condition that 360 each angle all can normally be used, the function of keeping lubrication system is the most difficult part.The little engine of described traditional four-journey is to force fuel feeding to be lubricated (general automobile and locomotive four-journey engine also are lubricated all in this way) to parts with oil pump.Another lubricating system in application engine then is with group oil dipper, and machine oil is dialled the atomizing of loosing provides parts lubricated, yet this kind mode has engine tilt angle restriction in the use.

The model utility content

A wherein purpose of the present utility model no matter be to allow engine at any angle of inclination, all can be kept and normally use and keep normal lubricating function, increases the competitive advantage of product.

Another purpose of the present utility model is with low-cost design, under the condition that does not increase expensive component, still can reach the function of lubrication system.

A kind of four-journey described in the utility model is drawn sincere lubricating fitting, include a fuel tank, a crankcase, a gear-box, a rocker arm chamber and a bath filter, the bent axle that is combined with balancing weight is set in the splendid attire machine oil in this fuel tank, this crankcase, and this bent axle connects a piston of being located in the cylinder.

Be communicated with a suction passage between described fuel tank and the crankcase, and one first one-way valve be set in this suction passage;

Be communicated with one first oil transportation channel between this crankcase and the gear-box;

Be communicated with one second oil transportation channel between this gear-box and the rocker arm chamber, and be communicated with one the 3rd oil transportation channel between this gear-box and the fuel tank;

Be communicated with one first drainback passage between this rocker arm chamber and the crankcase, and be provided with one second one-way valve at this first drainback passage;

Be communicated with one second drainback passage between described bath filter and this fuel tank, and be provided with one the 3rd one-way valve at this second drainback passage, be communicated with a gas-entered passageway between this bath filter and this crankcase, be communicated with an outlet passageway between this bath filter and this cylinder;

Described piston moves in this cylinder and makes when producing negative pressure in this crankcase, make described first one-way valve, second one-way valve and the 3rd one-way valve are opened, make in the fuel tank; in the rocker arm chamber; and the machine oil in the bath filter is inhaled into crankcase; described piston motion and making when producing positive pressure this crankcase in; the machine oil in this crankcase is pressed into described gear-box with waste gas; make and produce positive pressure in the gear-box; and the machine oil in the gear-box and waste gas are pressed into this fuel tank and rocker arm chamber; enter waste gas in the fuel tank and make and produce positive pressure in the fuel tank and waste gas is imported this bath filter carry out Oil-gas Separation; the gas after the separation is admitted in this cylinder; then sucked back this crankcase of machine oil after separating, and to finish machine oil lubricated the reaching of engine is circulated.

First one-way valve of the present utility model, include a valve nozzle, a spheroid and a spring, this valve nozzle is installed on described suction passage, this spring action is in described spheroid, under the state that is not subjected to external force, make the permanent maintenance of this spheroid clog this valve nozzle and block described suction passage, avoid the machine oil in the crankcase to be back to fuel tank.

Second one-way valve of the present utility model and the 3rd one-way valve can adopt rubber material to make, and this rubber one-way valve be not subjected to external force to do the time spent, and the elasticity of utilizing itself is the valve opening closure, do the time spent when being under pressure valve opening is opened.

The utility model is provided with the gas distribution channel that is connected with this gas-entered passageway at described crankcase, is provided with a tip bar in this gas transmission channel, and when engine was inverted, described tip bar was blocked this gas distribution channel by its weight effect, avoided oil gas to be delivered to this bath filter.

Described four-journey of the present utility model is drawn sincere lubricating fitting, is the piston stroking upward of engine and when making crankcase produce negative pressure, crankcase enters crankcase from fuel tank, rocker arm chamber with bath filter extraction machine oil; When making crankcase produce positive pressure when descent of piston, then machine oil in the crankcase and waste gas are pressed into gear-box,, and machine oil and waste gas are pressed into fuel tank and rocker arm chamber so that gear-box produces positive pressure; The waste gas that enters fuel tank produces positive pressure, and then waste gas is imported bath filter carry out Oil-gas Separation, gas after the separation is imported into combustor inner cylinder, machine oil after separating then sucks crankcase with it when the crankcase of next stroke produces negative pressure, use and finish the lubricated and circulation of machine oil to engine; The utility model can be limited to fuel tank with machine oil when engine tilts and be inverted, avoid a large amount of machine oil to enter the firing chamber and cause cutting the engine, and can keep lubricating function simultaneously.

The utility model is by aforesaid one-way valve structures, and the variation of crankcase internal pressure, except machine oil is lubricated the parts of its inside in the engine internal circulation, also can be when engine tilts any angle even inversion, prevent that machine oil from entering the firing chamber of engine, cause cutting the engine, can keep lubricating function simultaneously.

Description of drawings

Fig. 1 is the forward sight section plan of the utility model engine lubricating device;

Fig. 2 is the side-looking section plan of the utility model engine lubricating device;

Fig. 3 is when the engine of Fig. 2 is inverted, the state that gas distribution channel is blocked;

Fig. 4 is embodiment's stereogram of crankcase first body structure of the present utility model;

Fig. 5 has installed embodiment's stereogram of bent axle and piston for crankcase first body of Fig. 4;

Fig. 6 is embodiment's stereogram of crankcase second body structure of the present utility model;

Fig. 7 is for showing embodiment's stereogram of crankcase second body structure of the present utility model from another angle;

Fig. 8 is the engine oil flow path schematic flow sheet of the utility model engine lubricating device.

Main component symbol description

1 fuel tank

2 crankcases

2A first body

2B second body

20 crankshaft room

21 suction passage

211 first one-way valves

2111 valve nozzles

2112 spheroids

2113 springs

22 first oil transportation channels

23 gas distribution channels

24 tip bars

241 taperings

3 gear-boxes

31 the 3rd oil transportation channels

4 rocker arm chambers

41 second oil transportation channels

42 first drainback passages

421 second one-way valves

5 cylinders

6 bent axles

62 pistons

7 bath filters

71 second drainback passages

711 the 3rd one-way valves

72 gas-entered passageways

73 outlet passageways

Embodiment

Below cooperate diagram that embodiment of the present utility model is done more detailed description, thereby any technician who is familiar with this technology can be implemented after studying this specification carefully according to this.

Consult Fig. 1 and Fig. 2, the preferred embodiment of the four-journey engine lubricating fitting that the utility model provides includes a fuel tank 1, a crankcase 2, a gear-box 3, a rocker arm chamber 4 and a bath filter 7; The usefulness of splendid attire machine oil is provided in the fuel tank 1; The bent axle 6 that is combined with balancing weight 61 is set in the crankcase 2, and this bent axle 6 connects a piston 62 of being located in the cylinder 5, and bent axle 6 two ends are provided with a flywheel and the gear train of being located in the gear-box 3 respectively.

Be communicated with a suction passage 21 between described fuel tank 1 and the crankcase 2, and one first one-way valve 211 be set in this suction passage 21; Cooperate shown in Figure 6, the preferred embodiment of this first one-way valve 211 is for including a valve nozzle 2111, a spheroid 2112 and a spring 2113, this valve nozzle 2111 is installed on suction passage 21, this spring 2113 acts on spheroid 2112, under the state that is not subjected to external force, make these spheroid 2112 permanent maintenances clog valve nozzle 2111 and blocking-up suction passage 21, avoid the machine oil in the crankcase 2 to be back to fuel tank 1, when crankcase 2 produces negative pressure and when overcoming the elastic force of spring 2113, spheroid 2112 is broken away from make the machine oil in the fuel tank 1 flow into crankcase 2 obstruction of valve nozzle 2111.

Be communicated with one first oil transportation channel 22 between this crankcase 2 and the gear-box 3; Be communicated with one second oil transportation channel 41 between this gear-box 3 and the rocker arm chamber 4, and be communicated with one the 3rd oil transportation channel 31 between this gear-box 3 and the fuel tank 1; Be connected one first drainback passage 42 between this rocker arm chamber 4 and the crankcase 2, and be provided with one second one-way valve 421 at this first drainback passage 42; In embodiment of the present utility model, this second one-way valve 421 is one-way valves that a kind of rubber material is made, and this rubber one-way valve be not subjected to external force to do the time spent, and the elasticity of utilizing itself is the valve opening closure, does the time spent when being under pressure valve opening is opened.

Be communicated with one second drainback passage 71 between described bath filter 7 and this fuel tank 1, and one the 3rd one-way valve 711 be set at this second drainback passage 71; In embodiment of the present utility model, the 3rd one-way valve 711 also is the rubber one-way valve identical with second one-way valve 421.Be communicated with a gas-entered passageway 72 between bath filter 7 and the crankcase 2; In addition, be communicated with an outlet passageway 73 between bath filter 7 and the cylinder 5.

The embodiment of crankcase 2 of the present utility model, form by first body 2A (as Fig. 4, shown in Figure 5) and the second body 2B (as Fig. 6, shown in Figure 7), this first body 2A has the crankshaft room 20 that is used for holding bent axle 6 and balancing weight, is provided with at the side of the first body 2A to be communicated with first oil transportation channel 22 (shown in Figure 5 arrow be path that machine oil from crankshaft room flow to gear-box) of this crankshaft room 20 to gear-box.The second body 2B is used for the involutory assembly that makes up with the first body 2A, and it is provided with a suction passage 21 and a gas distribution channel 23, and a tip bar 24 is set in this gas distribution channel 23, and an end of tip bar 24 has the tapering 241 of external diameter greater than gas distribution channel 23 outlets; 23 of gas distribution channels are connected with gas-entered passageway 72.

Fig. 1 and Fig. 2 show the function mode of the utility model four-journey engine lubricating fitting, and wherein, solid arrow is represented the flow path of machine oil, and dotted line is represented the flow path of the machine oil of mix waste gas, and hollow arrow is represented the gas flow path; The piston 62 of described engine upstroke and making in the crankcase 2 when producing negative pressure in cylinder 5 makes described first one-way valve 211, second one-way valve 421 and the 3rd one-way valve 711 open, and makes that the machine oil in the fuel tank 1 is inhaled into crankcase 2 via suction passage 21; Machine oil in the rocker arm chamber 4 then is inhaled into crankcase 2 via first drainback passage 42; Machine oil in the bath filter 7 also simultaneously is inhaled into crankcase 2 via second drainback passage 71.When making crankcase 2 produce positive pressure when piston 62 downward movements, then this positive pressure is pressed into gear-box 3 with waste gas by first oil transportation channel 22 with the machine oil in the crankcase 2, produce positive pressures in the gear-box 3 at this moment, and then machine oil and the waste gas in the gear-box 3 are pressed into rocker arm chamber 4 by second oil transportation channel 41, and be pressed into fuel tank 1 by the 3rd oil transportation channel 31, entering waste gas in the fuel tank 1 then produces positive pressure and is imported into bath filter 7 by gas-entered passageway 72 and carries out Oil-gas Separation in fuel tank, gas after the separation is admitted to cylinder 5 with the fuel mix gas firing and driven plunger moves back and forth by outlet passageway 73, machine oil after separating is then divided a word with a hyphen at the end of a line Cheng Shizai by second drainback passage, 71 sucked back crankcases 2 on piston, to finish the lubricated and circulation of machine oil to engine.

The utility model is by aforesaid design, except can not need use oil pump just can make machine oil provide the parts of engine internal lubricated, when engine of the present utility model as shown in Figure 3 when tilting even be inverted, the tip bar 24 that is located in the gas distribution channel 23 can move the outlet of blocking gas distribution channel 23 toward the below by the weight of itself, avoid oil gas and oil delivery to bath filter 7 and enter the firing chamber of cylinder, cause cutting the engine, can keep lubricating function simultaneously.

Fig. 8 is the engine oil flow path schematic flow sheet of the aforementioned the utility model embodiment's of demonstration engine lubricating device; Wherein, filled arrows is represented the flow direction of machine oil; Hollow arrow is represented the flow direction of waste gas.Show among the figure when piston up and when making crankcase 2 in the generation negative pressure, make fuel tank 1, rocker arm chamber 4 and bath filter 7 interior machine oil be inhaled into crankcase 2 simultaneously in cylinder.When making crankcase 2 produce positive pressure when the descent of piston motion, then this positive pressure is pressed into gear-box 3 with the machine oil in the crankcase 2 with waste gas, produce positive pressures in the gear-box 3 at this moment, and then machine oil in the gear-box 3 and waste gas are pressed into rocker arm chamber 4 and fuel tank 1 simultaneously, entering waste gas in the fuel tank 1 then produces positive pressure and is imported into bath filter 7 and carries out Oil-gas Separation, gas after the separation is imported into cylinder 5 and fuel mix gas firing, sucked back again crankcase 2 when the machine oil after separating is then divided a word with a hyphen at the end of a line journey on piston is to finish the lubricated and circulation of machine oil to engine.

The above in order to explain preferred embodiment of the present utility model, is not that attempt is done any pro forma restriction to the utility model according to this only.Therefore, everyly do relevant any modification of the present utility model or change in that identical creation spirit is following, all must be included within the protection domain of the present utility model.

Claims (5)

1. four-journey engine lubricating fitting, include a fuel tank, a crankcase, a gear-box, a rocker arm chamber and a bath filter, the bent axle that is combined with balancing weight is set in the splendid attire machine oil in this fuel tank, this crankcase, this bent axle connects a piston of being located in the cylinder, it is characterized in that:
Be communicated with a suction passage between described fuel tank and the crankcase, and one first one-way valve be set in this suction passage;
Be communicated with one first oil transportation channel between described crankcase and the gear-box;
Be communicated with one second oil transportation channel between described gear-box and the rocker arm chamber, and be communicated with one the 3rd oil transportation channel between this gear-box and the described fuel tank;
Be communicated with one first drainback passage between described rocker arm chamber and the described crankcase, and be provided with one second one-way valve at this first drainback passage;
Be communicated with one second drainback passage between described bath filter and this fuel tank, and be provided with one the 3rd one-way valve at this second drainback passage, be communicated with a gas-entered passageway between this bath filter and this crankcase, be communicated with an outlet passageway between this bath filter and this cylinder.
2. four-journey engine lubricating fitting as claimed in claim 1, it is characterized in that described first one-way valve includes a valve nozzle, a spheroid and a spring, this valve nozzle is installed on described suction passage, under the state that is not subjected to external force, described spring makes the permanent maintenance of spheroid clog this valve nozzle.
3. four-journey engine lubricating fitting as claimed in claim 1 is characterized in that, described second one-way valve and the 3rd one-way valve are a kind of rubber valves.
4. four-journey engine lubricating fitting as claimed in claim 1 is characterized in that described crankcase is provided with the gas distribution channel that is connected with this gas-entered passageway, is provided with a tip bar in this gas distribution channel, and when engine was inverted, described tip bar was blocked this gas distribution channel.
5. four-journey engine lubricating fitting as claimed in claim 4 is characterized in that, an end of described tip bar has the tapering of external diameter greater than this gas distribution channel outlet, and the outlet of described gas distribution channel is blocked in this tapering.
CNU200720151238XU 2007-06-08 2007-06-08 Lubrication apparatus of four-stroke engine CN201141317Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU200720151238XU CN201141317Y (en) 2007-06-08 2007-06-08 Lubrication apparatus of four-stroke engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU200720151238XU CN201141317Y (en) 2007-06-08 2007-06-08 Lubrication apparatus of four-stroke engine

Publications (1)

Publication Number Publication Date
CN201141317Y true CN201141317Y (en) 2008-10-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU200720151238XU CN201141317Y (en) 2007-06-08 2007-06-08 Lubrication apparatus of four-stroke engine

Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102758688A (en) * 2012-08-02 2012-10-31 无锡开普动力有限公司 Structure of inserting partial bulge of engine gearbox into oil pan
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
CN104033205A (en) * 2014-06-09 2014-09-10 永康市威力园林机械有限公司 Lubricating system of handheld four-stroke engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102758688A (en) * 2012-08-02 2012-10-31 无锡开普动力有限公司 Structure of inserting partial bulge of engine gearbox into oil pan
CN102758688B (en) * 2012-08-02 2014-12-03 无锡开普动力有限公司 Structure of inserting partial bulge of engine gearbox into oil pan
CN104033205A (en) * 2014-06-09 2014-09-10 永康市威力园林机械有限公司 Lubricating system of handheld four-stroke engine
CN104033205B (en) * 2014-06-09 2017-01-25 永康市威力园林机械有限公司 Lubricating system of handheld four-stroke engine

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GR01 Patent grant
C14 Grant of patent or utility model
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20081205

Address after: Swedish huskvarna, zip code:

Patentee after: Husqvarna AB

Address before: Taoyuan County, Taiwan, china:

Patentee before: Zhengfeng Industry Co., Ltd.

ASS Succession or assignment of patent right

Owner name: HUSQVARNA LTD.

Free format text: FORMER OWNER: ZHENGFENG INDUSTRY CO., LTD.

Effective date: 20081205

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

Granted publication date: 20081029

Termination date: 20100608

C17 Cessation of patent right