CN207348924U - A kind of four-stroke engine - Google Patents
A kind of four-stroke engine Download PDFInfo
- Publication number
- CN207348924U CN207348924U CN201721406342.9U CN201721406342U CN207348924U CN 207348924 U CN207348924 U CN 207348924U CN 201721406342 U CN201721406342 U CN 201721406342U CN 207348924 U CN207348924 U CN 207348924U
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- oil
- lubricating oil
- supply gallery
- crankcase
- oil supply
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Abstract
The utility model discloses a kind of four-stroke engine, the four-stroke engine is internally provided with accumulator, crankcase, cam chamber, rocker arm chamber, lubricating oil transfer pipeline, can connect simultaneously circulation conveying lubricating oil between the accumulator, crankcase, cam chamber, rocker arm chamber by lubricating oil transfer pipeline.Condition of negative pressure caused by making full use of the movement of crankcase inner carrier, will be gathered in because of gravity in the indoor lubricating oil suction crankcase of oil storage, meet the lubrication needs of bent axle, piston.Cam chamber, rocker arm chamber are also included service range by lubricating oil transfer pipeline, likewise, based on condition of negative pressure caused by the movement of crankcase inner carrier, lubricating oil can also enter cam chamber, rocker arm chamber.So gravity plays the role of being limited to play complementary, supply direction and supply without being related to lubricating oil in lubrication oil recovery process in lubricating oil supply process.Being in the heeling condition lubricating oil transfer pipeline even if the four-stroke engine can also work normally.
Description
Technical field
It the utility model is related to the system that lubricating oil is supplied in a kind of four-stroke engine.
Background technology
Four-stroke engine is widely used in small generator technical field power is provided.It is well known that four punchings
Need lubricating oil auxiliary high frequency moving component to move in journey engine operation process, to reduce friction, improve work efficiency.It is logical
The lubricating system of normal four-stroke engine is all more complicated, the profit that the technology of use is combined based on forced feed lubrication and splash lubrication
Sliding technical solution, but forced feed lubrication mode needs to provide power by oil pump for the flowing of lubricating oil, therefore, forced feed lubrication skill
The driving mechanism of oil pump and corresponding driving oil pump running must be used in art implementation process, gear is used on existing engine
Chain drive solves the driving problems of oil pump, this has resulted in complicatedization of the lubricating system.
The content of the invention
The technical problems to be solved in the utility model is how to simplify the system that lubricating oil is supplied in four-stroke engine
Structure and the working performance for improving the system, thus obtain a kind of four-stroke engine.
In order to solve the above technical problems, the utility model adopts the following technical solution:The four-stroke engine is internally provided with
Accumulator, crankcase, cam chamber, rocker arm chamber, lubricating oil transfer pipeline, the accumulator, crankcase, cam chamber, rocker arm chamber it
Between can by lubricating oil transfer pipeline connect and circulation conveying lubricating oil, the lubricating oil transfer pipeline include oil supply gallery I, supply
Oily check valve I, oil supply gallery IV, oil feed non-return valve II, oil supply gallery II, oil supply gallery III, drainback passage II, oil return are unidirectional
Valve, the accumulator are connected by oil supply gallery I with crankcase, and the crankcase is connected with accumulator again by oil supply gallery IV
Logical, the oil feed non-return valve I is installed in oil supply gallery I, and the oil feed non-return valve II is installed in oil supply gallery IV, the storage
Grease chamber is connected by oil supply gallery II with cam chamber, and the cam chamber is connected by oil supply gallery III with rocker arm chamber, the rocking arm
Room is connected by drainback passage II with crankcase, and the return check valve is installed in drainback passage II, the oil supply gallery II,
The internal diameter of oil supply gallery III is both less than the internal diameter of oil supply gallery I, and the internal diameter of the drainback passage II is more than the interior of oil supply gallery IV
Footpath, II in the vertical direction of the drainback passage distribution, the internal diameter of the drainback passage II is in the direction of rocker arm chamber to crankcase
On be gradually reduced.
In the technical program, make full use of crankcase inner carrier move caused by condition of negative pressure, will assemble because of gravity
In the indoor lubricating oil suction crankcase of oil storage, meet the lubrication needs of bent axle, piston.Lubricating oil transfer pipeline is also by cam
Room, rocker arm chamber include service range, likewise, also may be used based on condition of negative pressure, lubricating oil caused by the movement of crankcase inner carrier
Into cam chamber, rocker arm chamber.So gravity plays the role of being limited to recycle in lubricating oil in lubricating oil supply process
Journey plays complementary, supply direction and supply without being related to lubricating oil.Tilted even if the four-stroke engine is in
The state lubricating oil transfer pipeline can also work normally.
The situation of generation " oil gas ", the four-stroke engine are mixed with air in order to handle lubricating oil in course of conveying
Inside is additionally provided with Oil-gas Separation room, and the lubricating oil transfer pipeline further includes drainback passage I, and the Oil-gas Separation room is located at rocking arm
Above room, the Oil-gas Separation room connects with rocker arm chamber and is equipped with oil collection net between the two, the Oil-gas Separation room equipped with it is outer
The exhaust passage of boundary's atmosphere, the Oil-gas Separation room are connected by drainback passage I with drainback passage II.Thus, will float
The lubricating oil being atomized in atmosphere is recycled by Oil-gas Separation means.
Lubricating oil is obtained by the way that in the inflow crankcase of drainback passage I, the drainback passage I is in vertical side into Oil-gas Separation is crossed
Distribution upwards, can so fully ensure that smoothly recycling lubricating oil.
In order to which the path of lubricating oil transfer pipeline is appropriately extended, by the fuel supply path and cam chamber of lubricating oil needed for crankcase
The fuel supply path of required lubricating oil establishes series relationship, and caching room, the caching room are additionally provided with inside the four-stroke engine
Above accumulator, the lubricating oil transfer pipeline further includes drain path I and drain path II, and the accumulator is by letting out
Oily passage I is connected with caching room, and the crankcase is connected by oil supply gallery IV with caching room, and the cam chamber is led to by fuel feeding
Road II is connected with caching room, and the cam chamber is connected by drain path II with accumulator, and the internal diameter of the oil supply gallery II, supply
The internal diameter of oily passage IV is both greater than the internal diameter of drain path I, and the internal diameter of the oil supply gallery II is less than the internal diameter of drain path II,
The internal diameter of the drain path II is more than the internal diameter of drain path I.Two such path can establish the connection relation of series connection, but
Accumulator can be connected to achieve the purpose that draining independently of each other in the case of an overload, and then promote whole pipeline to tend to be flat again
Steady working status.
The utility model uses above-mentioned technical proposal:
The transfer pipeline of the four-stroke engine eliminates traditional oil pump feed mode, but uses conversion piston motion
The pressure of generation to provide power for lubricant movement, and then promotes to be lubricated into sealed crankcase, then by check valve
One-way conduction act on the lubricating oil transport path to form one-way circulation, this lubricating system causes the volume of engine to diminish,
Production cost lowers.
The four-stroke engine is by establishing supply direction and the lubricating oil transfer pipeline that is not influenced by gravitation of supply
Internal part provides lubricating oil, so as to improve working performance, can be worked normally in heeling condition with the long period.
Brief description of the drawings
The utility model is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of lubricating oil transfer pipeline distribution schematic diagram of four-stroke engine of the utility model.
Embodiment
As shown in Figure 1, four-stroke engine is internally provided with accumulator 1, crankcase 2, cam chamber 3, rocker arm chamber 4, oil gas point
From room 5, caching room 19, lubricating oil transfer pipeline.Accumulator 1 is located at the bottom of four-stroke engine;Room 19 is cached positioned at storage
The top of grease chamber 1;Top distribution crankcase 2, cam chamber 3 in caching room 19;Rocker arm chamber 4 is located at both crankcase 2, cam chamber 3
Top;And Oil-gas Separation room 5 is located at the top of four-stroke engine, the i.e. top positioned at rocker arm chamber 4.Lubricating oil delivery pipe
Road is distributed in inside four-stroke engine, it divides with accumulator 1, caching room 19, crankcase 2, cam chamber 3, rocker arm chamber 4, oil gas
All being established from room 5 has connected relation so that lubricating oil can flow into accumulator 1, caching room 19, crankcase 2, cam chamber 3, rocking arm
Room 4, Oil-gas Separation room 5.
Specifically, lubricating oil transfer pipeline is unidirectional including oil supply gallery I 6, oil feed non-return valve I 7, oil supply gallery IV 8, fuel feeding
Valve II 9, oil supply gallery II 10, oil supply gallery III 11, drainback passage II 12, return check valve 13, drainback passage I 14, draining lead to
Road I 16 and drain path II 15.
Accumulator 1 is connected by oil supply gallery I 6 with crankcase 2, and crankcase 2 is by oil supply gallery IV 8 first with caching room 19
Connection, caching room 19 are directly connected by drain path I 16 with accumulator 1 again, and oil feed non-return valve I 7 is installed on oil supply gallery I 6
Interior, oil feed non-return valve II 9 is installed in oil supply gallery IV 8.Oil feed non-return valve I 7 allow lubricating oil in oil supply gallery I 6 from
Accumulator 1 enters crankcase 2, without allowing lubricating oil to enter accumulator 1 from crankcase 2 in oil supply gallery I 6.Fuel feeding is unidirectional
II 9, valve allows lubricating oil to enter caching room 19 from crankcase 2 in oil supply gallery IV 8, without allowing lubricating oil to lead in fuel feeding
Enter crankcase 2 from caching room 19 in road IV 8.
Caching room 19 is connected by oil supply gallery II 10 with cam chamber 3, and cam chamber 3 passes through oil supply gallery III 11 and rocker arm chamber
4 connections, cam chamber 3 are also connected by drain path II 15 with accumulator 1, and rocker arm chamber 4 passes through drainback passage II 12 and crankcase 2
Connection, return check valve 13 are installed in drainback passage II 12.Return check valve 13 allows lubricating oil in drainback passage II 12
Enter crankcase 2 from rocker arm chamber 4, without allowing lubricating oil to enter rocker arm chamber 4 from crankcase 2 in drainback passage II 12.Oil gas
Separation chamber 5 connects with rocker arm chamber 4 and is equipped with oil collection net between the two, which is wire netting, Oil-gas Separation room 5 be equipped with it is outer
The exhaust passage 18 of boundary's atmosphere, Oil-gas Separation room 5 are connected by drainback passage I 14 with drainback passage II 12.In lubricating oil
On conveying direction, the position that drainback passage II 12 is connected with drainback passage I 14 is located at the upstream of return check valve 13, so oil return
Check valve 13, which can also play, only allows lubricating oil to enter crankcase 2 from Oil-gas Separation room 5 in drainback passage I 14, without permitting
Perhaps lubricating oil enters Oil-gas Separation room 5 in drainback passage I 14 from crankcase 2.In order to control fuel delivery be distributed and easy to return
Lubricating oil is received, oil supply gallery II 10, the internal diameter of oil supply gallery III 11 are both less than the internal diameter of oil supply gallery I 6, drainback passage II 12
Internal diameter is more than the internal diameter of oil supply gallery IV 8, the distribution of II 12 in the vertical direction of drainback passage, and the internal diameter of drainback passage II 12 is shaking
Arm room 4 is to being gradually reduced on the direction of crankcase 2, the distribution of I 14 in the vertical direction of drainback passage.When there is mist of oil generation, oil
Mist can accumulate drop in Oil-gas Separation room 5 when passing through oil collection net, and reenter lubricating oil by drainback passage II 12
Transfer pipeline.
Exhaust passage 18 is connected with the gas handling system in four-stroke engine when four-stroke engine uses.Due to four strokes
The piston 17 of engine can produce a peak position and a lowest point in reciprocatory movement, the piston 17
Lowest point is referred to as dead point, and oil supply gallery I 6, oil supply gallery IV 8, drainback passage II 12, drainback passage I 14 are in crankcase 2
Interior port is all located at below the dead point of piston 17.Piston 17 can change the pressure below dead point during moving back and forth, especially
It is that the pressure P1 in 2 space of crankcase below its dead point when 17 ascending motion of piston can be reduced, and at this time, four cycle engines
The pressure dimension in accumulator 1, caching room 19, cam chamber 3, rocker arm chamber 4, Oil-gas Separation room 5, lubricating oil transfer pipeline inside machine
Original pressure P2 is held, pressure P1 will be far smaller than pressure P2, so generate pressure difference, based on oil feed non-return valve I 7, fuel feeding list
To the collective effect of valve II 9, return check valve 13 so that the lubricating oil in accumulator 1 is inhaled into crankcase 2, in rocker arm chamber 4
Lubricating oil be inhaled into crankcase 2, the lubricating oil in Oil-gas Separation room 5 is inhaled into crankcase 2, further chain reaction,
The lubricating oil in cam chamber 3 is promoted to be inhaled into rocker arm chamber 4, the lubricating oil in caching room 19 is inhaled into cam chamber 3, accumulator
Lubricating oil in 1 is inhaled into caching room 19, and the lubricating oil in accumulator 1 is inhaled into cam chamber 3.When 17 descending motion of piston
When its dead point below the pressure P1 in 2 space of crankcase can rise, when pressure P1 is more than the pressure at other positions, crankcase 2
Interior lubricating oil is squeezed into caching room 19, can be flowed into when the lubricating oil in caching room 19 is excessive by drain path I 16
In accumulator 1, it can also flow into from oil supply gallery II 10 in cam chamber 3 and be flowed into again by drain path II 15 in accumulator 1.By
Internal diameter, the internal diameter of oil supply gallery IV 8 in oil supply gallery II 10 are both greater than the internal diameter of drain path I 16, the oil supply gallery II
10 internal diameter is less than the internal diameter of drain path II 15, and the internal diameter of the drain path II 15 is more than the internal diameter of drain path I 16, makes
The lubricating oil obtained in most of caching rooms 19 are transfused in cam chamber 3.When 17 type frequently reciprocating of piston, the lubricating oil flow
Process can circulation continuous progress.
Claims (4)
1. a kind of four-stroke engine, which is internally provided with accumulator (1), crankcase (2), cam chamber (3), shakes
Arm room (4), lubricating oil transfer pipeline, the accumulator (1), crankcase (2), cam chamber (3), rocker arm chamber can pass through between (4)
The connection of lubricating oil transfer pipeline and circulation conveying lubricating oil, it is characterised in that:The lubricating oil transfer pipeline includes oil supply gallery I
(6), oil feed non-return valve I (7), oil supply gallery IV (8), oil feed non-return valve II (9), oil supply gallery II (10), oil supply gallery III
(11), drainback passage II (12), return check valve (13), the accumulator (1) are connected by oil supply gallery I (6) and crankcase (2)
Logical, the crankcase (2) connects by oil supply gallery IV (8) and with accumulator (1), and the oil feed non-return valve I (7), which is installed on, to supply
In oily passage I (6), the oil feed non-return valve II (9) is installed in oil supply gallery IV (8), and the accumulator (1) is led to by fuel feeding
Road II (10) is connected with cam chamber (3), and the cam chamber (3) is connected by oil supply gallery III (11) with rocker arm chamber (4), described to shake
Arm room (4) is connected by drainback passage II (12) with crankcase (2), and the return check valve (13) is installed on drainback passage II
(12) in, the oil supply gallery II (10), the internal diameter of oil supply gallery III (11) are both less than the internal diameter of oil supply gallery I (6), described time
The internal diameter of oily passage II (12) is more than the internal diameter of oil supply gallery IV (8), and described II (12) in the vertical direction of drainback passage is distributed,
The internal diameter of the drainback passage II (12) is gradually reduced on the direction of rocker arm chamber (4) to crankcase (2).
2. four-stroke engine according to claim 1, it is characterised in that:Oil gas is additionally provided with inside the four-stroke engine
Separation chamber (5), the lubricating oil transfer pipeline further include drainback passage I (14), and the Oil-gas Separation room (5) is located at rocker arm chamber
(4) top, the Oil-gas Separation room (5) connect with rocker arm chamber (4) and are equipped with oil collection net, the Oil-gas Separation room between the two
(5) exhaust passage (18) connected with ambient atmosphere is equipped with, the Oil-gas Separation room (5) passes through drainback passage I (14) and oil return
Passage II (12) connects.
3. four-stroke engine according to claim 2, it is characterised in that:Described I (14) in the vertical direction of drainback passage
Distribution.
4. four-stroke engine according to claim 1, it is characterised in that:Caching is additionally provided with inside the four-stroke engine
Room (19), caching room (19) are located above accumulator (1), and the lubricating oil transfer pipeline further includes drain path I (16)
With drain path II (15), the accumulator (1) is connected by drain path I (16) with caching room (19), the crankcase (2)
Connected by oil supply gallery IV (8) with caching room (19), the cam chamber (3) passes through oil supply gallery II (10) and caching room (19)
Connection, the cam chamber (3) are connected by drain path II (15) with accumulator (1), the internal diameter of the oil supply gallery II (10),
The internal diameter of oil supply gallery IV (8) is both greater than the internal diameter of drain path I (16), and the internal diameter of the oil supply gallery II (10) is less than draining
The internal diameter of passage II (15), the internal diameter of the drain path II (15) are more than the internal diameter of drain path I (16).
Priority Applications (1)
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CN201721406342.9U CN207348924U (en) | 2017-10-26 | 2017-10-26 | A kind of four-stroke engine |
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CN201721406342.9U CN207348924U (en) | 2017-10-26 | 2017-10-26 | A kind of four-stroke engine |
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CN207348924U true CN207348924U (en) | 2018-05-11 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109707478A (en) * | 2017-10-26 | 2019-05-03 | 浙江星月实业有限公司 | A kind of four-stroke engine |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109707478A (en) * | 2017-10-26 | 2019-05-03 | 浙江星月实业有限公司 | A kind of four-stroke engine |
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