CN109268101A - A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine - Google Patents

A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine Download PDF

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Publication number
CN109268101A
CN109268101A CN201811130720.4A CN201811130720A CN109268101A CN 109268101 A CN109268101 A CN 109268101A CN 201811130720 A CN201811130720 A CN 201811130720A CN 109268101 A CN109268101 A CN 109268101A
Authority
CN
China
Prior art keywords
chamber
oil
lubricating
stroke engine
prime
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.)
Pending
Application number
CN201811130720.4A
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Chinese (zh)
Inventor
闫刚
杜涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang YAT Electrical Appliance Co Ltd
Original Assignee
Zhejiang YAT Electrical Appliance Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang YAT Electrical Appliance Co Ltd filed Critical Zhejiang YAT Electrical Appliance Co Ltd
Priority to CN201811130720.4A priority Critical patent/CN109268101A/en
Publication of CN109268101A publication Critical patent/CN109268101A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/04Pressure lubrication using pressure in working cylinder or crankcase to operate lubricant feeding devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10Lubrication of valve gear or auxiliaries
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10Lubrication of valve gear or auxiliaries
    • F01M9/101Lubrication of valve gear or auxiliaries of cam surfaces

Abstract

The invention discloses a kind of lubricating systems of four-stroke engine, crankcase including forming crank chamber, the cam chamber of grease-box and receiving cam on the outside of crankcase, the oil chamber of storage lubricating oil is formed between grease-box and crankcase, the prime that connection crank chamber and oil chamber are provided on crankcase takes oilhole, oil pipe is connected between cam chamber and oil chamber, the present invention between cam chamber and oil chamber by oil pipe by will be connected to, so that four-stroke engine is at work, steam-cylinder piston moves up and down, so that lubricating oil enters cam chamber by oil pipe, it needs not move through crank chamber and enters cam chamber, guarantee that enough lubricating oil can enter cam chamber and timely be lubricated structures such as cams, it prevents from wearing;The present invention also provides a kind of tool equipment with four-stroke engine, the tool equipment includes four-stroke engine, and the four-stroke engine uses above-mentioned lubricating system.

Description

A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine
Technical field
The invention belongs to engine arts, and in particular to a kind of lubricating system of four-stroke engine.
Background technique
Four-stroke engine is widely used on various packaged type products, such as garden instrument, this four cycle engine The inside of machine all includes an oil gas lubricating system, which generally includes the crankcase to form crank chamber, holds profit Oil chamber, cylinder chamber and the cam chamber of lubricating oil, the prime that connection crank chamber and oil chamber are provided on the crankcase take Oilhole, currently, the existing indoor lubricating oil of four-stroke engine lubricating oil will by taking oilhole to enter crank chamber by prime, Then cam chamber is entered by crank chamber, to realize the effect lubricated component of machine.
But in the use process of four-stroke engine, crank chamber largely consumes the lubricating oil into crank chamber, so that Lubricants capacity into cam chamber is less, poor for the lubricant effect of cam, the final lubricant effect for influencing four-stroke engine, Reduce the service life of engine.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of lube systems of the four-stroke engine of high lubricating effect System.
In order to solve the above technical problems, the present invention adopts the following technical scheme: a kind of lubricating system of four-stroke engine, Including forming the crankcase of crank chamber, the grease-box on the outside of crankcase and the cam chamber for accommodating cam, grease-box and The oil chamber of storage lubricating oil is formed between crankcase, and connection crank chamber is provided on crankcase and the prime of oil chamber takes Oilhole, cam chamber and oil chamber are connected to by oil pipe, and one end of oil pipe is connected with cam chamber, and the other end protrudes into lubricating oil It is interior.
Preferably, the lubricating system of four-stroke engine further includes upper rocker arm room, lead between upper rocker arm room and cam chamber Tappet duct is crossed to be connected.
Preferably, the lubricating system of four-stroke engine further includes cylinder, cylinder includes cylinder chamber and cylinder cover, cylinder It covers and is provided with final stage venthole, final stage venthole one end is connected to upper rocker arm room, and the other end is connected with cylinder chamber.
Preferably, final stage venthole is connected by communicating pipe with cylinder chamber.
Preferably, it is S1 that prime, which takes the sectional area of oilhole, the sectional area of final stage venthole is S3, meets S1/S3=0.6 ~2.5.
Preferably, being connected between cam chamber and crank chamber by intergrade oil-through hole, the sectional area of intergrade oil-through hole For S2, S2/S1≤9.
Preferably, it includes that the first prime above lubricating oil liquid level takes oilhole and the second prime to take that prime, which takes oilhole, Oilhole.
Preferably, the first prime takes oilhole and the second prime to take oilhole in four-stroke engine position when in a horizontal state In in same level, the first prime take oilhole and the second prime to take oilhole where horizontal plane and lubricating oil liquid level between away from From for L, L≤50mm.
Preferably, crankcase is towards preventing lubricating oil when being provided with four-stroke engine rotation on the side wall of grease-box Flow into the leakproof oil gluten item that prime takes oilhole.
Preferably, leakproof oil gluten item takes oilhole to be arranged around prime.
Compared with prior art, the beneficial effects of the present invention are:
1, it is connected between cam chamber and oil chamber by oil pipe, so that have piston reciprocating in cylinder chamber, piston When reciprocating motion, crank indoor circulation generates high pressure and negative pressure, forms air pulse, when forming negative pressure, cam chamber in crank chamber The indoor lubricating oil of lubricating oil is taken oilhole to be drawn into crank chamber and carried out to crank link mechanism by interior formation high pressure by prime Lubrication, while the indoor partial air of cam being expressed in oil chamber by cam chamber through oil pipe, to cam chamber and lubricating oil Indoor pressure is adjusted, and guarantees that cam chamber and the indoor pressure of lubricating oil are stablized;When forming high pressure, cam chamber in crank chamber Interior formation negative pressure, the indoor parts of lubricating oil of lubricating oil passes through in tubing transmission to cam chamber under gas pressure, to cam chamber Interior cam is lubricated;So that four-stroke engine is at work, steam-cylinder piston is moved up and down, so that lubricating oil is logical It crosses oil pipe and enters cam chamber, need not move through crank chamber and enter cam chamber, guarantee that enough lubricating oil can enter cam chamber to convex The structures such as wheel are timely lubricated, and prevent from wearing.
2, when four-stroke engine is in initial status, the parts of lubricating oil in cam chamber can be entered upper by tappet channel Rocker arm chamber is lubricated the indoor components of upper rocker arm, guarantees each components inside the four-stroke engine of huge discharge all It can be lubricated in time.
3, the lubricating oil that do not use up in upper rocker arm room can be discharged by final stage venthole, be introduced into cylinder through communicating pipe Thoroughly burn-up, only surplus micro exhaust gases, which enter cylinder and thoroughly burnt up, is also utilized, and the loss for reducing lubricating oil is big simultaneously The big blowdown for reducing four-stroke engine.
4, in the case where engine displacement and certain crank chamber volume, piston in 100-500 hertz of frequency to move down The dynamic pressure for being formed by air pulse and speed are basicly stable, the inner diameter size of oilhole are taken by changing prime, so that it may change Become air pulse to the pressure-vaccum pressure of lubricating oil in oil chamber, to control stream of the lubricating oil from oil chamber to crank chamber Amount.Since prime takes the size of oilhole sectional area to can control air pulse to the pressure-vaccum pressure of lubricating oil in oil chamber, from And flow of the lubricating oil from oil chamber to crank chamber is controlled, while final stage venthole will guarantee the lubricating oil in machine as far as possible Few discharge, and the performance of machine power is not influenced, so prime to be taken to the sectional area S1 and final stage venthole of the internal diameter of oilhole Internal diameter sectional area S3 ratio setting at S1/S3=0.6~2.5, the internal diameter by controlling final stage venthole takes with prime The flow and lubricant effect of the internal diameter ratio control lubricating oil of oilhole.
5, intergrade oil-through hole introduces the theory of grading control, takes the sectional area of the internal diameter of oilhole and final stage logical in prime In the case that the sectional area of the internal diameter of stomata determines, before being controlled by the sectional area size of the internal diameter of control intergrade oil-through hole Grade takes oilhole to take the conveying capacity of the travel speed of lubricating oil and lubricating oil between oilhole to final stage, realizes that classification is precisely controlled, leads to Cross by the sectional area S2 and prime of intergrade oil-through hole take oilhole sectional area S1 ratio setting at S2/S1≤9 so that into The lubricants capacity of cam chamber is meeting outside the indoor components of cam, remaining lubricants capacity can satisfy upper rocker arm indoor zero The lubrication of part needs.
6, two primes take the design of oilhole, and when so that four-stroke engine arbitrarily being overturn, prime takes oilhole that can act on, Meet the normal use of the four-stroke engine oil gas lubricating system.Four-stroke engine is when in a horizontal state, the first prime The pressure-vaccum for taking oilhole and the second prime that oilhole is taken to be able to carry out lubricating oil;Four-stroke engine is in right side when setting state, main Oilhole is taken to be lubricated the pressure-vaccum of oil by the second prime;Four-stroke engine is in left side when setting state, mainly by before first Grade takes oilhole to be lubricated oily pressure-vaccum;When four-stroke engine is in inversion state, initial status or post state, before first The pressure-vaccum that grade takes oilhole and the second prime that oilhole is taken to be able to carry out lubricating oil;The end of oil pipe is only at four-stroke engine When horizontality below the liquid level of lubricating oil, play the role of extracting lubricating oil, the end of remaining state oil pipe is located at The ullage of lubricating oil plays the role of the pressure for adjusting cam box and grease-box.
7, by taking oilhole and the second prime that oilhole is taken to be arranged to be located in same level the first prime, i.e., before first The two sides that grade takes oilhole and the second prime that oilhole is taken to be located at crankcase, convenient for making when four-stroke engine is arbitrarily overturn With the distance between horizontal plane and lubricating oil liquid level where taking oilhole and the second prime to take oilhole the first prime L are arranged to L ≤ 50mm while so that lubricating oil will not pour into crank chamber automatically, leads under the action of negative pressure in crank chamber convenient for lubricating oil Crossing the first prime takes oilhole or the second prime that oilhole is taken to enter in crank chamber.
8, because lubricating oil is easy to take oilhole to flow into crank from oil chamber through prime when four-stroke engine is arbitrarily overturn Interior, so leakproof oil gluten item is located at crankcase direction by taking the position of oilhole that leakproof oil gluten item is arranged close to prime in crankcase The side of grease-box, with prevent four-stroke engine overturn when lubricating oil through prime take oilhole from oil chamber flow into crank It is indoor.
9, leakproof oil gluten item takes oilhole to be arranged around prime, i.e., the leakproof oil gluten for setting up annular week of oilhole is taken in prime It is more preferable to keep off oily effect for item.
Compared with prior art, the present invention between cam chamber and oil chamber by oil pipe by will be connected to, so that four punchings At work, steam-cylinder piston moves up and down journey engine, so that lubricating oil enters cam chamber by oil pipe, needs not move through Crank chamber enters cam chamber, guarantees that enough lubricating oil can enter cam chamber and timely be lubricated structures such as cams, prevents Only wear.
The present invention also provides a kind of tool equipment with four-stroke engine, the tool equipment includes four cycle engines Machine, the four-stroke engine use above-mentioned lubricating system, the tool equipment be gasoline saw or shrub and hedge trimmer or grass-mowing machine or Brush cutter or electric blower or lawn machine or generator or water pump or jetting machine.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the schematic diagram that a kind of four-stroke engine of the present invention is in horizontality;
Fig. 2 is that a kind of four-stroke engine of the present invention is in the schematic diagram that state is set on right side;
Fig. 3 is that a kind of four-stroke engine of the present invention is in the schematic diagram that state is set in left side;
Fig. 4 is the schematic diagram that a kind of four-stroke engine of the present invention is in inversion state;
Fig. 5 is the schematic diagram that a kind of four-stroke engine of the present invention is in initial status;
Fig. 6 is that crankcase is in initial status schematic diagram;
Fig. 7 is that crankcase is in horizontality schematic diagram.
Wherein: 1, grease-box;2, crankcase;21, the first prime takes oilhole;22, the second prime takes oilhole;23, gear oil Rib;3, crank chamber;4, oil chamber;41, oil pipe;5, cam chamber;51, cam;52, tappet duct;53, tappet;54, intermediate Grade oil-through hole;6, upper rocker arm room;7, cylinder;8, cylinder cover;81, final stage venthole;82, communicating pipe;9, lubricating oil.
Specific embodiment
Lubricating system to a kind of four-stroke engine of the present invention and with the tool of four-stroke engine referring to Figure 1 to Figure 7 The embodiment of equipment is described further.
Embodiment one:
A kind of lubricating system of four-stroke engine, including forming the crankcase 2 of crank chamber 3, positioned at 2 outside of crankcase Grease-box 1 and the cam chamber 5 for accommodating cam 51, as shown in Figure 1, four-stroke engine is in horizontality, crankcase 2 is cut Face is in U-typed, and the lower part of crankcase 2 is convex arc-shaped under being in, and grease-box 1 is trapped among the outside of crankcase 2,1 He of grease-box The oil chamber 4 of the U-typed of storage lubricating oil 9 is formed between crankcase 2, is provided with connection crank chamber 3 and lubrication on crankcase 2 The prime of grease chamber 4 takes oilhole, cam chamber 5 and oil chamber 4 to be connected to by oil pipe 41, and one end of oil pipe 41 is connected with cam chamber 5 Logical, the other end protrudes into lubricating oil 9, and oil pipe 41 makes cam chamber 5 be connected with oil chamber 4.
It is connected between cam chamber 5 and oil chamber 4 by oil pipe 41, so that have piston reciprocating in cylinder chamber, it is living When plug moves back and forth, circulation generates high pressure and negative pressure in crank chamber 3, forms air pulse, when the piston of cylinder 7 is upwards (i.e. Direction far from crank chamber 3) it is mobile when, form negative pressure in crank chamber 3, high pressure formed in cam chamber 5, by oil chamber 4 Interior lubricating oil 9 takes oilhole to be drawn into crank chamber 3 and is lubricated to crank link mechanism by prime, while by cam chamber 5 Interior partial air is expressed in oil chamber 4 by cam chamber 5 through oil pipe 41, to the pressure in cam chamber 5 and oil chamber 4 into Row is adjusted, and guarantees that the pressure in cam chamber 5 and oil chamber 4 is stablized;When the piston of cylinder 7 is downwards (i.e. close to the side of crank chamber 3 To) it is mobile when, form high pressure in crank chamber 3, form negative pressure in cam chamber 5, the parts of lubricating oil 9 in oil chamber 4 exists It is transferred in cam chamber 5 under gas pressure by oil pipe 41, the cam 51 in cam chamber 5 is lubricated;So that four strokes are sent out At work, 7 piston of cylinder moves up and down motivation, so that lubricating oil 9 enters cam chamber 5 by oil pipe 41, without warp It crosses crank chamber 3 and enters cam chamber 5, guarantee that enough lubricating oil 9 can enter cam chamber 5 and carry out timely to structures such as cams 51 Lubrication, prevents from wearing.
In the present embodiment, the lubricating system of four-stroke engine further includes upper rocker arm room 6, upper rocker arm room 6 and cam chamber 5 it Between be connected by tappet duct 52,53 channel of tappet for tappet 53 and lubricating oil 9 for passing through, as shown in figure 5, four strokes are sent out Motivation is in initial status, and the parts of lubricating oil 9 in cam chamber 5 can enter upper rocker arm room 6 to upper rocker arm by 53 channel of tappet Components in room 6 are lubricated, and guarantee that each components inside the four-stroke engine of huge discharge can obtain in time Lubrication.
The lubricating system of four-stroke engine in the present embodiment further includes cylinder 7, and cylinder includes cylinder chamber and cylinder cover 8, the top of cylinder 7 is provided with cylinder cover 8, is provided with final stage venthole 81 on cylinder cover 8,81 one end of final stage venthole with above shake Arm room 6 is connected to, and the other end is connected by communicating pipe 82 with cylinder chamber, and the lubricating oil 9 that do not use up in upper rocker arm room 6 can pass through Final stage venthole 81 is discharged, and is introduced into cylinder 7 through communicating pipe 82 and thoroughly burns up, and only surplus micro exhaust gases enter 7 quilt of cylinder Thoroughly burn-up is also utilized, and is reduced the loss of lubricating oil 9 while being greatly reduced the blowdown of four-stroke engine.
It should be noted that piston is in the case where engine displacement and certain 3 volume of crank chamber with 100-500 hertz Frequency move up and down the pressure for being formed by air pulse and speed is basicly stable, take the internal diameter of oilhole big by changing prime It is small, so that it may to change air pulse to the pressure-vaccum pressure of lubricating oil 9 in oil chamber 4, to control lubricating oil 9 from oil chamber 4 arrive the flow of crank chamber 3.Since prime takes the size of oilhole sectional area to can control air pulse to lubricating in oil chamber 4 The pressure-vaccum pressure of oil 9, to control lubricating oil 9 from oil chamber 4 to the flow of crank chamber 3, while final stage venthole 81 will be protected As the few as possible discharge of lubricating oil 9 in machine is demonstrate,proved, and does not influence the performance of machine power, so in the present embodiment, by prime Take the ratio setting of the sectional area S3 of the sectional area S1 of the internal diameter of oilhole and the internal diameter of final stage venthole 81 at S1/S3=0.6~ 2.5, take the internal diameter ratio of oilhole to control the flow and lubrication effect of lubricating oil 9 by the internal diameter and prime that control final stage venthole 81 Fruit.
In the present embodiment, it is connected between cam chamber 5 and crank chamber 3 by intergrade oil-through hole 54, as shown in fig. 6, intermediate Grade oil-through hole 54 introduces the theory of grading control, and the sectional area of the internal diameter of oilhole and the internal diameter of final stage venthole 81 are taken in prime Sectional area determine in the case where, the sectional area size of internal diameter by controlling intergrade oil-through hole 54 takes oilhole to control prime Take the conveying capacity of the travel speed of lubricating oil 9 and lubricating oil 9 between oilhole to final stage, realize that classification is precisely controlled, by will in The sectional area S2 and prime of intercaste oil-through hole 54 take the ratio setting of the sectional area S1 of oilhole at S2/S1≤9, so that into cam 9 amount of lubricating oil of room 5 is meeting outside the components in cam chamber 5, remaining 9 amount of lubricating oil can satisfy zero in upper rocker arm room 6 The lubrication of component needs.
In the present embodiment, it includes taking oilhole 21 and second positioned at the first prime of 9 ullage of lubricating oil that prime, which takes oilhole, Prime takes oilhole 22, and two primes take the design of oilhole, and when so that four-stroke engine arbitrarily being overturn, prime takes oilhole that can make With meeting the normal use of the four-stroke engine oil gas lubricating system.As shown in Figure 1, four-stroke engine is in horizontal When state, pressure-vaccum that the first prime takes oilhole 21 and the second prime that oilhole 22 is taken to be able to carry out lubricating oil 9;As shown in Fig. 2, four punchings Journey engine is in right side when setting state, mainly takes oilhole 22 to be lubricated the pressure-vaccum of oil 9 by the second prime;As shown in figure 3, four Stroke Engine is in left side when setting state, mainly takes oilhole 21 to be lubricated the pressure-vaccum of oil 9 by the first prime;Four cycle engines When machine is in inversion state, initial status or post state, the first prime takes oilhole 21 and the second prime that oilhole 22 is taken can It is lubricated the pressure-vaccum of oil 9;As shown, the end of oil pipe 41 is only when in a horizontal state positioned at profit in four-stroke engine Below the liquid level of lubricating oil 9, play the role of extracting lubricating oil 9, the end of remaining state oil pipe 41 is located on the liquid level of lubricating oil 9 The pressure for adjusting cam 51 casees and grease-box 1 plays the role of in side.
As shown in Figure 1, by taking oilhole 21 and the second prime that oilhole 22 is taken to be arranged to be located at same level the first prime On face, i.e. the two sides that the first prime takes oilhole 21 and the second prime that oilhole 22 is taken to be located at crankcase 2, convenient for being sent out in four strokes Motivation acts on when arbitrarily overturning, the horizontal plane and lubricating oil 9 where taking oilhole 21 and the second prime to take oilhole 22 first prime The distance between liquid level L is arranged to L≤50mm, while so that lubricating oil 9 will not pour into crank chamber 3 automatically, is convenient for lubricating oil 9 Take oilhole 21 or the second prime that oilhole 22 is taken to enter in crank chamber 3 by the first prime under the action of negative pressure in crank chamber 3.
Because lubricating oil 9 is easy to take oilhole to flow into crank from oil chamber 4 through prime when four-stroke engine is arbitrarily overturn In room 3, so the present embodiment close to prime in crankcase 2 by taking the position of oilhole that leakproof oil gluten item 23, leakproof oil gluten item 23 is arranged Positioned at crankcase 2 towards the side of grease-box 1, to prevent the lubricating oil 9 when four-stroke engine is overturn from taking oilhole through prime It is flowed into crank chamber 3 from oil chamber 4.
The present embodiment is preferably, and leakproof oil gluten item 23 takes oilhole to be arranged around prime, i.e., in the circumferential direction that prime takes oilhole The leakproof oil gluten item 23 of annular is set, it is more preferable to keep off oily effect.
Embodiment two:
A kind of tool equipment with four-stroke engine, the tool equipment include four-stroke engine, four stroke Engine uses the lubricating system of embodiment one, and the tool equipment can be gasoline saw, shrub and hedge trimmer, grass-mowing machine, brush cutter, blow Any one in suction ventilator, lawn machine, generator, water pump or jetting machine.The protection scope of certain invention is simultaneously unlimited It is enumerated in above-mentioned.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of lubricating system of four-stroke engine, the crankcase including forming crank chamber, the lubrication on the outside of crankcase Fuel tank and the cam chamber for accommodating cam form the oil chamber of storage lubricating oil between the grease-box and crankcase, described The prime that connection crank chamber and oil chamber are provided on crankcase takes oilhole, it is characterised in that: the cam chamber and lubricating oil Room is connected to by oil pipe, and one end of oil pipe is connected with cam chamber, and the other end protrudes into lubricating oil.
2. a kind of lubricating system of four-stroke engine according to claim 1, it is characterised in that: four cycle engine The lubricating system of machine further includes upper rocker arm room, is connected between upper rocker arm room and cam chamber by tappet duct.
3. a kind of lubricating system of four-stroke engine according to claim 2, it is characterised in that: four cycle engine The lubricating system of machine further includes cylinder, and cylinder includes cylinder chamber and cylinder cover, final stage venthole is provided on cylinder cover, final stage is logical Stomata one end is connected to upper rocker arm room, and the other end is connected with cylinder chamber.
4. a kind of lubricating system of four-stroke engine according to claim 3, it is characterised in that: the final stage venthole It is connected by communicating pipe with cylinder chamber.
5. a kind of lubricating system of four-stroke engine according to claim 3 or 4, it is characterised in that: the prime takes The sectional area of oilhole is S1, and the sectional area of the final stage venthole is S3, meets S1/S3=0.6~2.5.
6. a kind of lubricating system of four-stroke engine according to claim 1, it is characterised in that: the cam chamber and institute It states and is connected between crank chamber by intergrade oil-through hole, the sectional area of intergrade oil-through hole is S2, S2/S1≤9.
7. a kind of lubricating system of four-stroke engine according to claim 1, it is characterised in that: the prime takes oilhole Oilhole and the second prime is taken to take oilhole including being located at the first prime above lubricating oil liquid level.
8. a kind of lubricating system of four-stroke engine according to claim 7, it is characterised in that: first prime takes Oilhole and the second prime take oilhole when in a horizontal state in same level in four-stroke engine, first prime The distance between horizontal plane and lubricating oil liquid level where taking oilhole and the second prime to take oilhole are L, L≤50mm.
9. a kind of lubricating system of four-stroke engine according to claim 1, it is characterised in that: the crankcase direction Prevent lubricating oil from flowing into the leakproof oil gluten item that prime takes oilhole when being provided with four-stroke engine rotation on the side wall of grease-box.
10. a kind of tool equipment with four-stroke engine, the tool equipment include four-stroke engine, it is characterised in that: The four-stroke engine uses lubricating system as claimed in any one of claims 1 to 9, and the tool equipment is gasoline saw Or shrub and hedge trimmer or grass-mowing machine or brush cutter or electric blower or lawn machine or generator or water pump or jetting machine.
CN201811130720.4A 2018-09-27 2018-09-27 A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine Pending CN109268101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811130720.4A CN109268101A (en) 2018-09-27 2018-09-27 A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811130720.4A CN109268101A (en) 2018-09-27 2018-09-27 A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine

Publications (1)

Publication Number Publication Date
CN109268101A true CN109268101A (en) 2019-01-25

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CN201811130720.4A Pending CN109268101A (en) 2018-09-27 2018-09-27 A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine

Country Status (1)

Country Link
CN (1) CN109268101A (en)

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