CN111271175A - Portable four-stroke gasoline engine of hand-held type multipurpose - Google Patents

Portable four-stroke gasoline engine of hand-held type multipurpose Download PDF

Info

Publication number
CN111271175A
CN111271175A CN202010084508.XA CN202010084508A CN111271175A CN 111271175 A CN111271175 A CN 111271175A CN 202010084508 A CN202010084508 A CN 202010084508A CN 111271175 A CN111271175 A CN 111271175A
Authority
CN
China
Prior art keywords
oil
chamber
valve
storage chamber
crankshaft
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
CN202010084508.XA
Other languages
Chinese (zh)
Inventor
王录永
周元彬
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.)
Yongkang Xinghu Power Machinery Co ltd
Original Assignee
Yongkang Xinghu Power Machinery 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 Yongkang Xinghu Power Machinery Co ltd filed Critical Yongkang Xinghu Power Machinery Co ltd
Priority to CN202010084508.XA priority Critical patent/CN111271175A/en
Publication of CN111271175A publication Critical patent/CN111271175A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/02Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • 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
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • 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
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/04Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • 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
    • F01M9/106Oil reservoirs
    • 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
    • F01M9/109Lubrication of valve gear or auxiliaries of rotary slide or sleeve valves

Abstract

The invention provides a hand-held multipurpose light four-stroke gasoline engine, which comprises a crankshaft chamber, an air valve distribution chamber, an oil storage chamber and an air valve chamber; the crankshaft chamber is communicated with the valve distribution chamber through an oil inlet channel arranged on the crankshaft and an oil outlet channel arranged on the crankshaft box body; a rotary valve comprises a valve sleeve and a valve shaft, wherein the valve shaft is a crankshaft journal, and an outlet of an oil outlet channel is arranged at the crankshaft journal. The oil return channel at the lowest part of the valve distribution chamber is communicated with the valve distribution chamber and the oil storage chamber. The crankshaft chamber is communicated with the oil storage chamber through an oil suction pipe, and a copper ball is arranged at the tail end of the oil suction pipe. The valve chamber is arranged above the cylinder and is internally provided with an oil-water separator. The cylinder head is communicated with the oil storage chamber through an external oil return pipe, an oil return inlet hole is formed in the cylinder head, and an oil return outlet hole is formed in the box body. The oil-gas separation device cannot lose effectiveness at any angle, the lubricating oil path is smooth, oil can not be sprayed, engine oil cannot be combusted, the engine-gas separation is thorough, the engine oil consumption is low, the emission is good, the product reliability is good, the device can work in 360 degrees in space, and the matching is wide.

Description

Portable four-stroke gasoline engine of hand-held type multipurpose
Technical Field
The invention relates to the field of gasoline engines, in particular to a handheld multipurpose portable four-stroke gasoline engine.
Background
CN102230406A discloses an invention named as "lubricating system of handheld four-stroke gasoline engine", which is to arrange a crank chamber, an oil storage chamber, a distribution chamber, a push rod chamber and a valve chamber in the gasoline engine body. The crankshaft chamber and the distribution chamber are communicated with an oil return channel arranged on the crankcase through an oil outlet channel arranged on the shaft diameter of the crankshaft, and an oil outlet channel opening is of a rotary valve structure. When the piston moves downwards, the pressure in the crankshaft chamber is positive, at the moment, the rotary valve is opened, the engine oil passes through the oil outlet channel, the distribution chamber and the push rod chamber from the crankshaft chamber and reaches the valve door chamber, when the piston moves upwards, the pressure in the crankshaft chamber is negative, the rotary valve is closed, and the engine oil passes through the push rod chamber and the distribution chamber from the valve door chamber and returns to the crankshaft. The oil storage chamber is connected with the crankshaft chamber without separation, and the oil level of the beating machine is splashed by the oil stirring rod on the connecting rod to lubricate the piston connecting rod mechanism. The structure can only realize the lubrication of parts in the gasoline engine at the vertical position, the lubrication at other positions is unreliable, and the engine can not work normally. And the oil-gas separator of the engine is simple and crude in design, the engine oil cannot be effectively separated, a large amount of engine oil enters the engine along with blow-by gas to be combusted, and the reliability of the engine is influenced by the excessive consumption of the engine oil and the serious carbon deposition of the engine.
An invention patent entitled "lubricating system for four-stroke gasoline engine" is disclosed in CN1157877A, and is characterized in that an oil storage chamber, a crank chamber and a distribution chamber are arranged in the gasoline engine body. The oil storage chamber and the crank chamber are communicated with each other through a through hole, and the crank chamber and the distribution chamber are communicated with each other through a reed-type check valve which opens when the pressure in the crank chamber rises. The distribution chamber and the oil reservoir chamber communicate with each other through an orifice. Oil mist generated in the oil reservoir chamber is circulated from the oil reservoir chamber to the crank chamber, the distribution chamber, and the oil reservoir chamber by the pressure pulse in the crank chamber. Although the lubricating device can lubricate parts in the gasoline engine, the purpose of the lubricating device is realized by adopting the reed type one-way valve, the manufacturing difficulty of the whole engine is increased, and the manufacturing cost of the whole engine is improved. In addition, the oil-gas separation is carried out by adopting the part at the top end of the cylinder cover, when the gasoline engine is inverted for a long time, the cylinder cover is filled with the engine oil, and the oil-gas separation mechanism loses the function, thereby affecting the performance of the gasoline engine.
With the enhancement of environmental protection consciousness of people, the continuous enhancement of waste gas emission control at home and abroad, the replacement of a two-stroke gasoline engine by a handheld air-cooled four-stroke gasoline engine which meets the environmental protection requirement is a necessary trend. Hand-held tool most need can both be steady work under arbitrary angle, but hand-held type forced air cooling four-stroke gasoline engine on the existing market, the recovery of lubricating oil makes during the machine oil flows back to the lubricated grease chamber through action of gravity most, just so lead to the gasoline engine to invert or when inclination is too big, thereby the unable recovery of machine oil influences the normal work of gasoline engine, and although some four-stroke gasoline engines are provided with special oil-gas separation device at present, but because the design is imperfect, lubricating oil is full of the cylinder cover when the gasoline engine is invertd or inclination is too big, oil-gas separation device loses the effect, and lubricating oil can't flow back to the oil storage chamber, make the unable normal work of. Therefore, the oil is burned at one time, and the oil in the oil storage chamber is less in lubricating oil, so that the engine works abnormally and even the cylinder is pulled. Therefore, the matching range is limited, and therefore, the development of a small air-cooled four-stroke gasoline engine which is suitable for matching with a handheld tool and can stably work at any angle is urgently needed.
Disclosure of Invention
In view of the above, the present invention provides a portable four-stroke gasoline engine with multiple purposes.
The technical scheme of the invention is realized as follows:
a hand-held multipurpose portable four-stroke gasoline engine comprises, arranged in an engine body:
a crank chamber, in which a crank link mechanism and a piston are arranged;
the valve distribution chamber is arranged on one side of the crankcase chamber, and a valve distribution mechanism is arranged in the valve distribution chamber;
an oil storage chamber for storing lubricating oil therein;
the crankshaft chamber is communicated with the valve distribution chamber through an oil inlet channel arranged on the crankshaft and an oil outlet channel arranged on the crankshaft box body;
the rotary valve comprises a valve sleeve and a valve shaft, the valve sleeve and the crankcase body are integrated, the valve shaft is a crankshaft journal, and an outlet of the oil outlet channel is arranged at the crankshaft journal;
the oil return channel is communicated with the valve distribution chamber and the oil storage chamber, the oil return channel is positioned below the valve distribution chamber and communicated with the oil storage chamber through a small hole in the crank case body, and an outlet small hole of the oil return channel is positioned in the middle of a partition wall between the oil storage chamber and the crank case and on the front and rear middle planes of the oil storage chamber;
the crankshaft chamber is communicated with the oil storage chamber through an oil suction pipe, the oil suction pipe is a rubber hose, and a copper ball is arranged at the tail end of the oil suction pipe.
The oil return channel is communicated with the valve distribution chamber and the oil storage chamber, the oil return channel is positioned below the valve distribution chamber and communicated with the oil storage chamber through a small hole in the crank case body, and an outlet of the oil return channel is positioned in the middle of the partition wall between the oil storage chamber and the crank case and on the front and rear middle planes of the oil storage chamber. And the crank chamber and the oil storage chamber are both U-shaped, so that oil can be prevented from flowing back into the cylinder head when the engine is at any position.
The crankshaft chamber is communicated with the oil storage chamber through an oil suction pipe, a rubber hose is arranged on the oil suction pipe, a copper ball is arranged at the tail end of the oil suction pipe, and the copper ball is arranged below the oil level of the oil storage chamber when the engine is in any position, so that oil suction can be guaranteed.
The crankshaft chamber and the oil storage chamber are communicated, and an air suction hole is arranged in the middle of the oil storage chamber
The cylinder cover chamber is arranged above the cylinder and internally provided with an oil-water separator, and oil gas passes through the oil-water separator and then enters the air filter through a balance pipe to enter the air inlet system for continuous combustion. The separated engine oil and the externally communicated air are sucked back to the oil storage chamber through an externally connected oil return pipe, and the negative pressure of the crankshaft chamber is balanced. The cylinder head is communicated with the oil storage chamber through an external oil return pipe, an oil return inlet hole is formed in the cylinder head, and an oil return outlet hole is formed in the box body. The oil outlet of the oil return hole is arranged in the middle of the oil storage chamber.
The crankcase comprises box and case lid, and the cylinder is installed alone on the box, and the good precision of intensity is high like this.
Through the structure, when the piston moves towards the top dead center, engine oil is sucked into the crankshaft chamber from the oil storage chamber by means of negative pressure in the crankshaft chamber, gas also enters the crankshaft chamber through the balance small holes, meanwhile, the engine oil and the externally communicated air which are separated by the oil-water separator are sucked back into the oil storage chamber through the externally connected oil return pipe, and the engine oil is crushed by the crank moving at a high speed and mixed with the sucked gas into oil mist to lubricate the piston crankshaft connecting rod mechanism. When the piston moves towards the bottom dead center, oil mist is pressed into the valve distribution chamber by the positive pressure in the crankshaft chamber through a channel on the crankshaft to lubricate the valve distribution mechanism, and then enters the cylinder cover chamber through the push rod hole to lubricate the upper rocker arm and the valve. The lubricated oil gas is separated by the oil-water separation mechanism, the waste gas is continuously combusted through the air filter, and the separated engine oil and balance air are sucked back to the oil storage chamber in the next working cycle.
When the engine works in a vertical position, oil which is cooled and accumulated on the cylinder cover by oil gas can return to the oil storage chamber through the small holes of the valve distribution chamber and the oil storage chamber under the gravity.
When the engine is inverted or works with the front, the rear, the left and the right sides downward, two suction pipes are arranged outside the diagonal line of the oil-water separator, three suction pipes are arranged inside the oil-water separator, and the engine oil cooled and accumulated on the cylinder cover can be sucked into the oil storage chamber through the two suction pipes outside and the engine oil separated in the oil-water separator through the three suction pipes inside. The oil-water separator can not be immersed in engine oil and can work normally at any position of the engine.
Has the advantages that:
by the principle and the structure, the oil-gas separation device cannot lose effectiveness at any angle, the lubricating oil path is smooth, oil injection cannot occur, engine oil cannot be combusted, engine gas is thoroughly separated, the engine oil consumption is low, the emission is good, and the reliability of the product is good. The multifunctional engine has the advantages of simple structure, ingenious design, good lubricating effect at any position of the engine, and can be matched with a brush cutter, a mower, a blower, a ground drill, a water pump, a gasoline pick, a gasoline tree mover, a spray duster, a gasoline cleaner and the like.
Drawings
FIG. 1 is a cross-sectional view of a hand-held multipurpose portable four-stroke gasoline engine of the present invention;
FIG. 2 is a schematic structural view of a hand-held multipurpose portable four-stroke gasoline engine of the present invention;
fig. 3 is a schematic structural view of an oil suction pipe of the present invention;
FIG. 4 is a sectional view of a portion of the portable four-stroke gasoline engine of the present invention;
FIG. 5 is a sectional view of the hand-held multipurpose portable four-stroke gasoline engine of the present invention;
FIG. 6 is a side view of an oil suction pipe of the oil-water separator of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention provides a handheld four-stroke engine (key to a lubrication system) including, disposed within an engine body:
a crank chamber 2 in which a crank link mechanism and a piston 20 are provided;
a valve distribution chamber 3 arranged at one side of the crankcase chamber and provided with a valve distribution mechanism therein;
an oil storage chamber 1, the oil storage chamber 1 storing lubricating oil therein.
The crank chamber 2 is communicated with the valve distribution chamber 3 through an oil inlet channel 6 arranged on a crank shaft 5 and an oil outlet channel 8 arranged on a crank case body 7;
a rotary valve comprises a valve housing 9 and a valve shaft 10, the valve housing 9 is integrated with a crank case 7, the valve shaft 10 is journal of a crank shaft 5, and an outlet 11 of an oil outlet passage 6 is provided at the journal of the crank shaft 5.
The oil return channel 12 is communicated with the valve distribution chamber and the oil storage chamber, the oil return channel 12 is positioned below the valve distribution chamber and communicated with the oil storage chamber through a small hole 13 in the crankcase body, and an outlet small hole 13 of the oil return channel is positioned in the middle of the oil storage chamber and the partition wall of the crankcase chamber and is positioned on the front middle plane and the rear middle plane of the oil storage chamber. And the crank chamber and the oil storage chamber are both U-shaped, so that oil can be prevented from flowing back into the cylinder head when the engine is at any position.
The crank chamber 2 is communicated with the oil storage chamber 1 through an oil suction pipe 14, the oil suction pipe is a rubber hose, a copper ball 15 is arranged at the tail end of the oil suction pipe, and the engine is arranged below the engine oil level of the oil storage chamber under the action of gravity of the copper ball 14 at any position, so that the 360-degree oil suction in the engine space is ensured.
The valve chamber 4 is arranged above the cylinder, an oil-water separator 16 is arranged in the valve chamber, and oil gas passes through the oil-water separator and then enters an air filter through a balance pipe 17 to enter an air inlet system for continuous combustion. The separated engine oil and the externally-communicated air are sucked back to the oil storage chamber through an externally-connected oil return pipe 18, and the negative pressure of the oil storage chamber and the crankshaft chamber is balanced. The cylinder head 28 is communicated with the oil storage chamber 1 through an external oil return pipe 14, an oil return inlet hole 27 is arranged on the cylinder head 28, and an oil return outlet hole 29 is arranged on the box body. The oil return hole outlet 29 is arranged in an intermediate position of the oil reservoir. The oil return inlet hole 27 and the oil return outlet 29 are connected through an external oil return pipe.
The crank chamber and the oil storage chamber are communicated with the air suction hole 19 through the air suction hole 19 on the box body and are arranged at the middle position of the box body of the oil storage chamber, so that the oil can not flow backwards into the cylinder when the engine is at any position,
through the structure, when the piston 5 moves towards the top dead center, the rotary valve is closed, engine oil is sucked into the crankshaft chamber through the oil suction pipe 14 by means of negative pressure in the crankshaft chamber, gas enters the crankshaft chamber through the small hole 19, meanwhile, the engine oil and the externally communicated air which are separated by the oil-water separator are sucked back into the oil storage chamber through the externally connected oil return pipe 18, and the engine oil is smashed by the crank 21 which moves at a high speed and then is mixed with the sucked gas to form an oil mist to lubricate the piston crankshaft side rod mechanism. When the piston 20 moves to the bottom dead center, the rotary valve is opened, oil mist and engine blow-by gas are pressed into the valve distribution chamber to lubricate the valve distribution mechanism by the positive pressure in the crank chamber through the channel on the crank shaft, and then enter the valve chamber to lubricate the upper rocker 23 and the valve 24 by the push rod hole 22. The lubricated oil gas is separated by the oil-water separation mechanism, the waste gas enters the air filter through the balance pipe 17 to be continuously combusted, and the separated oil and balance air are sucked back to the oil storage chamber in the next working cycle.
When the engine works in a vertical position, oil which is cooled and accumulated on the cylinder cover by oil gas can return to the oil storage chamber 1 through the valve distribution chamber 4 and the oil storage chamber small hole 12 under the action of gravity and negative pressure.
When the engine is inverted or works with the front, the rear, the left and the right sides downward, two suction pipes 25 are arranged outside the diagonal line of the oil-water separator 16, three suction pipes 26 are arranged inside the oil-water separator, the engine oil cooled and accumulated on the cylinder cover can pass through the two suction pipes outside the oil-water separator, and the engine oil separated in the oil-water separator is sucked into the oil storage chamber through the three suction pipes inside the oil-water separator. The oil-water separator 16 can not be immersed in the engine oil, the oil-gas separator works normally, a lubricating oil path is smooth, the engine oil can not be accumulated at the cylinder head, and the engine can work normally at any position.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only for the purpose of illustrating the technical solutions of the present invention, and not for the purpose of limiting the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. A portable four-stroke gasoline engine of hand-held multipurpose, characterized by that, including setting up in the engine organism:
a crank chamber, in which a crank link mechanism and a piston are arranged;
the valve distribution chamber is arranged on one side of the crankcase chamber, and a valve distribution mechanism is arranged in the valve distribution chamber;
an oil storage chamber for storing lubricating oil therein;
the crankshaft chamber is communicated with the valve distribution chamber through an oil inlet channel arranged on the crankshaft and an oil outlet channel arranged on the crankshaft box body;
the rotary valve comprises a valve sleeve and a valve shaft, the valve sleeve and the crankcase body are integrated, the valve shaft is a crankshaft journal, and an outlet of the oil outlet channel is arranged at the crankshaft journal;
the oil return channel is communicated with the valve distribution chamber and the oil storage chamber, the oil return channel is positioned below the valve distribution chamber and communicated with the oil storage chamber through a small hole in the crank case body, and an outlet small hole of the oil return channel is positioned in the middle of a partition wall between the oil storage chamber and the crank case and on the front and rear middle planes of the oil storage chamber;
the crankshaft chamber is communicated with the oil storage chamber through an oil suction pipe, the oil suction pipe is a rubber hose, and a copper ball is arranged at the tail end of the oil suction pipe.
2. The portable hand-held multipurpose four-stroke gasoline engine as claimed in claim wherein a valve chamber is provided above the cylinder with a separator for oil and water.
3. The hand-held multipurpose portable four-stroke gasoline engine of wherein said crank chamber and said oil reservoir chamber are both U-shaped.
4. The portable hand-held multipurpose four-stroke gasoline engine as defined in claim, wherein the crank chamber and the oil storage chamber body are communicated through a suction hole, and the suction hole is disposed at a middle position of the oil storage chamber.
5. The portable hand-held multipurpose four-stroke gasoline engine as claimed in claim, further comprising a cylinder head, wherein the cylinder head is communicated with the oil storage chamber through an external oil return pipe, the cylinder head is provided with an oil return inlet hole, and the tank body is provided with an oil return outlet hole. The oil outlet of the oil return hole is arranged in the middle of the oil storage chamber.
6. The portable four-stroke gasoline engine of claim wherein the crankcase is comprised of a housing and a cover, the cylinder being mounted to the housing.
CN202010084508.XA 2020-02-10 2020-02-10 Portable four-stroke gasoline engine of hand-held type multipurpose Pending CN111271175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010084508.XA CN111271175A (en) 2020-02-10 2020-02-10 Portable four-stroke gasoline engine of hand-held type multipurpose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010084508.XA CN111271175A (en) 2020-02-10 2020-02-10 Portable four-stroke gasoline engine of hand-held type multipurpose

Publications (1)

Publication Number Publication Date
CN111271175A true CN111271175A (en) 2020-06-12

Family

ID=70995003

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010084508.XA Pending CN111271175A (en) 2020-02-10 2020-02-10 Portable four-stroke gasoline engine of hand-held type multipurpose

Country Status (1)

Country Link
CN (1) CN111271175A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101749074A (en) * 2008-12-04 2010-06-23 昆山兴宝塑料制品有限公司 Lubricating method and lubricating structure of four-stroke gasoline engine
CN102230406A (en) * 2011-06-13 2011-11-02 重庆宗申通用动力机械有限公司 Handheld four-stroke engine lubricating system
CN102418575A (en) * 2011-11-29 2012-04-18 星月集团有限公司 Handheld four-travel engine lubrication system
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
CN205172671U (en) * 2015-12-11 2016-04-20 浙江中坚科技股份有限公司 Lubricating system of handheld four -stroke engine
CN109798163A (en) * 2019-01-04 2019-05-24 山东华盛农业药械有限责任公司 Hand-held air-cooled four-cycle gasoline engine lubricating system and gasoline engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101749074A (en) * 2008-12-04 2010-06-23 昆山兴宝塑料制品有限公司 Lubricating method and lubricating structure of four-stroke gasoline engine
CN102230406A (en) * 2011-06-13 2011-11-02 重庆宗申通用动力机械有限公司 Handheld four-stroke engine lubricating system
CN102418575A (en) * 2011-11-29 2012-04-18 星月集团有限公司 Handheld four-travel engine lubrication system
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
CN205172671U (en) * 2015-12-11 2016-04-20 浙江中坚科技股份有限公司 Lubricating system of handheld four -stroke engine
CN109798163A (en) * 2019-01-04 2019-05-24 山东华盛农业药械有限责任公司 Hand-held air-cooled four-cycle gasoline engine lubricating system and gasoline engine

Similar Documents

Publication Publication Date Title
US5709185A (en) Lubricating system for four-stroke-cycle engine
JP5826017B2 (en) 4-stroke engine
US5960764A (en) Four-stroke internal combustion engine
JP5463111B2 (en) Lubricating device for portable 4-cycle engine
EP0962630B1 (en) Lubricating apparatus in a four-stroke engines
US6666184B2 (en) Multi-position, operator-carried, four-cycle engine
KR100216246B1 (en) Lubricating apparatus for 4 cycle engine
US6202613B1 (en) Four-stroke cycle internal combustion engine
US4688529A (en) Lubricating system for horizontal cylinder overhead valve engine
WO2009022959A1 (en) Lubrication device for four-stroke engine
EP1995418A1 (en) Breather device of crankcase for 4-cycle engine
US7114483B2 (en) Lubrication device for four-stroke engine
US6170456B1 (en) Lubricating device for four-stroke engine
EP2599978B1 (en) Four-stroke engine
JP3894723B2 (en) Engine head cover structure
CN111271175A (en) Portable four-stroke gasoline engine of hand-held type multipurpose
CN101280704B (en) Arbitrary overturn four-stroke cycle engine
JPH10288019A (en) Lubricating device for four-cycle engine
CN209743002U (en) Oil-gas separation device of gasoline engine lubricating system
CN209875245U (en) Hand-held type forced air cooling four-stroke gasoline engine lubricating system and gasoline engine
CN101956587A (en) Random overturning type miniature four-stroke gasoline engine
TWI388715B (en) Engine lubrication device
CN105332761B (en) The lubricating system of hand four stroke engine
CN106567757B (en) Lubricating device for engine
EP2787184B1 (en) Handheld four-stroke engine lubricating system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination