CN100585137C - Universal vertical shaft petrol engine - Google Patents
Universal vertical shaft petrol engine Download PDFInfo
- Publication number
- CN100585137C CN100585137C CN200710078276A CN200710078276A CN100585137C CN 100585137 C CN100585137 C CN 100585137C CN 200710078276 A CN200710078276 A CN 200710078276A CN 200710078276 A CN200710078276 A CN 200710078276A CN 100585137 C CN100585137 C CN 100585137C
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- crankcase
- cylinder head
- wall
- chamber
- cylinder
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Abstract
The present invention discloses a universal vertical axis gasoline engine. It is characterized by that on the wall of cylinder liner an oil return hole is set, one end of said oil return hole is communicated with oil outlet on the cylinder head, and another end of said oil return hole is extended to the end face of open end of crankcase shape cavity; the shape cavity of crankcase cover is separated into internal and external two cavity chambers by means of common wall, the form and size of internal cavity chamber portion of said shape cavity are suitable to that of the described crankcase shaft cavity, the internal cavity chamber of shape cavity of the crankcase cover is communicated with shape cavity of crankcase; on the described common wall an oil return channel is set, the inlet of said oil return channel is positioned on the end face of upper end of said common wall and is communicated with the described oil return hole, and the outlet of said oil return channel is positioned on inner side wall of said common wall.
Description
Technical field
The invention belongs to the petrol engine technical field, specifically, relate to a kind of universal vertical shaft petrol engine.
Background technique
The structure of universal vertical shaft petrol engine is made of parts such as crankcase 1, crankcase cover 2, bent axle 6, connecting rod 5, piston 9, cylinder body 8, cylinder head 3, cylinder skull 4, flywheel 10, igniter 11, fan guard 12, starter 13, starter lid 14 and fuel tanks 15 as shown in Figure 5.Wherein crankcase cover 2 is positioned at the below of crankcase 1, and both open-mouth ends are interlocked, and the shape chamber 2a of crankcase cover 2 is communicated with the shape chamber 1a of crankcase 1.Offer exhaust port 1b and spill port 1c on the wall of crankcase gas cylinder sleeve 1d, the structure in two holes is identical, be one be communicated with the shape chamber 1a of crankcase, the other end connects to the end face of cylinder liner 1d.Cylinder head 3 is installed in the outside of crankcase 1 upper cylinder cover 1d, and the outer side surface of this cylinder head 3 is by bolt cylinder skull 4, and the inner chamber 4a of cylinder skull 4 communicates with the shape chamber 3a of cylinder head.On the wall of cylinder head 3, offer inlet hole 3b and oil drainage hole 3c, wherein one of inlet hole 3b with the crankcase gas cylinder sleeve on exhaust port 1b be docked and connected, the other end communicates with the shape chamber 3a of cylinder head; One of oil drainage hole 3c with the crankcase gas cylinder sleeve on spill port 1c be docked and connected, the other end also communicates with the shape chamber 3a of cylinder head.When piston 9 actings, the large quantity of exhaust gas that produces in the crankcase 1, oil vapor are with the machine oil that splashes, enter among the shape chamber 3a of cylinder head by the exhaust port 1b on the crankcase gas cylinder sleeve, inlet hole 3b on the cylinder head, part oil vapor cooling back is with machine oil, flow back to bent axle box-shaped cavity 1a through oil drainage hole 3c on the cylinder head and the spill port 1c on the crankcase gas cylinder sleeve, and deposit in the machine oil pond of crankcase cover shape chamber 2a; Another part oil vapor is with waste gas, enters in the sky filter by exhaust outlet 4b on the cylinder skull 4 and the flue gas leading that is attached thereto, mixes with air after filtering, enters under the effect of carburetor air pipe negative pressure and carries out mixed combustion in the Carburetor.
The waste gas that produces in the crankcase 1 and the pressure of oil vapor are generally between 200P～300P, because the import of crankcase gas cylinder sleeve upper air-vent 1b and the outlet of spill port 1c all communicate with the shape chamber 1a of crankcase, and all be positioned at the top of crankcase cover machine oil pond liquid level, be subjected to the influence of same chamber pressure, the pressure of crankcase gas cylinder sleeve upper air-vent 1b inlet equates substantially with the pressure in spill port 1c outlet port, the pressure difference that is exhaust port 1b inlet and spill port 1c outlet port is very little, can not get back to by spill port 1c rapidly in the machine oil pond of crankcase cover at the machine oil of cylinder capitiform chamber 3a inner accumulated like this, cause the flue gas leading oil spout easily, make each parts cisco unity malfunction under the oil starvation state in the crankcase, and do not reach related standards on the engine emission yet, thereby cause environmental pollution.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of universal vertical shaft petrol engine that can effectively prevent the flue gas leading oil spout.
Technological scheme of the present invention is as follows: a kind of universal vertical shaft petrol engine, comprise crankcase, crankcase cover, the gentle cylinder head cover of cylinder head, wherein crankcase cover is positioned at the below of crankcase, both open-mouth ends are interlocked, offer exhaust port on the wall of crankcase gas cylinder sleeve, one of this exhaust port is communicated with the shape chamber of crankcase, the other end connects the end face to cylinder liner; Described cylinder head is installed in the outside of crankcase upper cylinder cover, the outer side surface fixed air cylinder head cover of this cylinder head, the inner chamber of cylinder skull communicates with the shape chamber of cylinder head, on the wall of cylinder head, offer inlet hole and oil drainage hole, wherein one of inlet hole with cylinder liner on exhaust port connection, other end communicate with the shape chamber of cylinder head; End face, an other end that connects to cylinder head of oil drainage hole also communicates with the shape chamber of cylinder head, its key is: offer spill port on the wall of described cylinder liner, one of this spill port communicates with oil drainage hole on the described cylinder head, and the other end of spill port connects to the end face of bent axle box-shaped cavity open-mouth end; The shape chamber of described crankcase cover is separated into inside and outside two chambers by being total to wall, and the shape size of inner cavity chamber's part in shape chamber adapts with the shape size of described bent axle box-shaped cavity, and the inner cavity chamber in crankcase cover shape chamber part communicates with the shape chamber of crankcase; Offer drainback passage on the wall altogether described, the import of this drainback passage is positioned at the end face of common wall upper end, and communicates with described spill port, and the outlet of drainback passage is positioned on the madial wall of common wall.
Because the liquid level in machine oil pond is generally a little less than the end face of its open-mouth end in the crankcase cover shape chamber, like this among the present invention crankcase cover altogether on the wall outlet of drainback passage be positioned under the liquid level in machine oil pond, the outlet port of drainback passage does not almost have pressure, and the pressure of inlet's waste gas of crankcase gas cylinder sleeve upper air-vent and oil vapor is generally between 200P～300P, has bigger pressure difference between the import of exhaust port and the outlet of drainback passage, make the machine oil in the cylinder capitiform chamber to get back to fast in the machine oil pond by the drainback passage that spill port on the cylinder liner and crankcase cover are total on the wall, thereby prevented that effectively machine oil from cylinder capitiform chamber inner accumulated, having eliminated the generation of flue gas leading fuel injection event.
Quicker, unimpeded when making waste gas, oil vapor and machine oil flow to the shape chamber of cylinder head from the shape chamber of crankcase, exhaust port on the above-mentioned cylinder liner is positioned at the top of spill port, and the center line of inlet hole coincides on the center line of exhaust port and the described cylinder head.
For the ease of processing spill port and drainback passage, and make machine oil quicker, unimpeded when the shape chamber of cylinder head is flowed back to the machine oil pond of crankcase cover, the spill port on the above-mentioned cylinder liner is made up of a cross-drilled hole and a vertical core, is
Shape, the center line of oil drainage hole coincides on the center line of its cross-drilled hole part and the described cylinder head; Drainback passage on the above-mentioned wall altogether also is made up of a cross-drilled hole and a vertical core, is
Shape, the center line of the center line of its vertical core part and spill port vertical core part coincides.
The invention has the beneficial effects as follows:
1, the machine oil in the cylinder capitiform chamber is got back in the machine oil pond fast, prevented that machine oil from cylinder capitiform chamber inner accumulated, having eliminated the generation of flue gas leading fuel injection event.
2, the motor cisco unity malfunction that causes because of oil starvation and the damage of inner components have effectively been avoided.
3, environmental protection more in the discharging can reach U.S. EPA and EC emission standard.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the worm's eye view of crankcase among the present invention.
Fig. 3 is the plan view of crankcase cover among the present invention.
Fig. 4 is the S-S cutaway view Amplified image of Fig. 3.
Fig. 5 is the structural representation of background technique.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As Fig. 1, Fig. 2 and shown in Figure 3, the open-mouth end of the shape chamber 1a of crankcase 1 down, crankcase cover 2 is positioned at the below of crankcase 1 and fixedlys connected with crankcase 1 by bolt.The shape chamber 2a of crankcase cover 2 is separated into inside and outside two chambers that the upper end is uncovered by being total to wall 2b, the shape size of the inner cavity chamber of shape chamber 2a part adapts with the shape size of described bent axle box-shaped cavity 1a, and the inner cavity chamber of crankcase cover shape chamber 2a part interlocks to merge with the shape chamber 1a of crankcase and is communicated with.One end of connecting rod 5 is connected with the middle part of bent axle 6, and the middle part of this bent axle 6 is arranged in the shape chamber 1a of crankcase 1, and the other end of connecting rod 5 is connected by wrist pin 7 and cylinder body 8 interior pistons 9, and cylinder body 8 is fixed in the cylinder liner 1d on the crankcase 1.Cylinder head 3 is installed in the outside at cylinder liner 1d, and the outer side surface of cylinder head 3 is by bolt cylinder skull 4, and cylinder skull 4, cylinder head 3 and cylinder body 8 are positioned on the same horizontal plane.The upper and lower of described bent axle 6 is bearing in the mounting hole corresponding on crankcase 1 and the crankcase cover 2 by bearing respectively, the lower end of bent axle 6 passes from the bottom of crankcase cover 2, the top and the suit flywheel 10 of crankcase 1 passed in the upper end of bent axle 6, at the next door of flywheel 10 mounting points firearm 11, the outside of this igniter 11 and flywheel 10 is covered with fan guard 12, starter 13 is installed in the top of fan guard 12, and the outside of starter 13 is covered with starter lid 14.Next door at crankcase 1 also is equipped with fuel tank 15, this fuel tank 15 and the both sides of cylinder head 3 separations at crankcase 1.
As shown in Figure 1, the internal fixation of cylinder skull 4 has dividing plate 16, this dividing plate 16 is separated into left and right two chambers with the inner chamber 4a of cylinder skull 4, wherein left chamber communicates with the shape chamber 3a of cylinder head 3, right chamber communicates with the external world by the exhaust outlet 4b that is opened on the cylinder head tegmental wall, and this exhaust outlet 4b is connected with empty filter by flue gas leading during use.Communicate by the vent on the dividing plate 16 between the left and right chamber of cylinder skull 4, valve block 17 is housed in this vent.Valve block 17 can adopt nylon membrane, and the action of valve block 17 makes the vent on the dividing plate 16 open or close by piston 9 pressure control that to-and-fro motion produces in cylinder body 8.
From Fig. 1, Fig. 2, Fig. 3 and Fig. 4, can further find out, on the wall of crankcase gas cylinder sleeve 1d, offer exhaust port 1b and spill port 1c, exhaust port 1b is positioned at the top of spill port 1c, and the import of this exhaust port 1b is communicated with the shape chamber 1a of crankcase 1, its outlet is positioned on the end face of cylinder liner 1d; Spill port 1c is made up of a cross-drilled hole and a vertical core, is
Shape, the import of spill port 1c are positioned on the end face of cylinder liner 1d, and its outlet connects to the end face of bent axle box-shaped cavity 1a open-mouth end.On the wall of cylinder head 3, offer inlet hole 3b and oil drainage hole 3c, wherein one of inlet hole 3b with cylinder liner 1d on exhaust port 1b connection, other end communicate with the shape chamber 3a of cylinder head, and the center line of the center line of inlet hole 3b and exhaust port 1b coincides.Described oil drainage hole 3c is parallel to inlet hole 3b, one of oil drainage hole 3c communicates with the shape chamber 3a of cylinder head 3, its other end connects to the end face of cylinder head 3 and with the import of spill port 1c and is docked and connected, and the center line of the center line of oil drainage hole 3c and spill port 1c cross-drilled hole part coincides.Offer drainback passage 2c on the common wall 2b of described crankcase cover 2, this drainback passage 2c also is made up of a cross-drilled hole and a vertical core, is
Shape, the import of drainback passage 2c are positioned at the end face of common wall 2b upper end, and communicate with described spill port 1c, and the center line of the center line of drainback passage 2c vertical core part and spill port 1c vertical core part coincides.The outlet of drainback passage 2c is positioned on the madial wall of common wall 2b lower end, when petrol engine is worked the outlet of this drainback passage 2c be positioned at crankcase cover 2 inner engine oil ponds below.
When the present invention works, piston 9 to-and-fro motion acting, the large quantity of exhaust gas that produces in the crankcase 1, oil vapor are with the machine oil that splashes, enter among the shape chamber 3a of cylinder head by the exhaust port 1b on the crankcase gas cylinder sleeve 1d, inlet hole 3b on the cylinder head 3, the part oil vapor is with waste gas, enter in the sky filter by exhaust outlet 4b on the cylinder skull 4 and the flue gas leading that is attached thereto, mix with the air after filtering, under the effect of carburetor air pipe negative pressure, enter again and carry out mixed combustion in the Carburetor; Another part oil vapor cooling back is with machine oil, under the action of pressure in the inlet of exhaust port 1b and drainback passage 2c outlet port, the drainback passage 2c that the oil drainage hole 3c on cylinder head, the spill port 1c on the crankcase gas cylinder sleeve and crankcase cover 2 are opened on the walls altogether flows back in the machine oil pond of bent axle box-shaped cavity inner cavity chamber part.Because the outlet port of drainback passage 2c is positioned at the below in crankcase cover 2 inner engine oil ponds, almost there is not pressure, and the pressure of the inlet's waste gas of crankcase gas cylinder sleeve upper air-vent 1b and oil vapor is generally between 200P～300P, has bigger pressure difference between the outlet of the import of exhaust port 1b and drainback passage 2c, make machine oil in the cylinder capitiform chamber 3a can get back to fast in the crankcase cover 2 in the machine oil pond, thereby prevented that effectively machine oil 3a in cylinder capitiform chamber from gathering, and eliminated the generation of flue gas leading fuel injection event.
Claims (4)
1, a kind of universal vertical shaft petrol engine, comprise crankcase (1), crankcase cover (2), the gentle cylinder head cover of cylinder head (3) (4), wherein crankcase cover (2) is positioned at the below of crankcase (1), both open-mouth ends are interlocked, offer exhaust port (1b) on the wall of crankcase gas cylinder sleeve (1d), one of this exhaust port (1b) is communicated with the shape chamber (1a) of crankcase (1), the other end connects to the end face of cylinder liner (1d); Described cylinder head (3) is installed in the outside of crankcase upper cylinder cover (1d), the outer side surface fixed air cylinder head cover (4) of this cylinder head (3), the inner chamber (4a) of cylinder skull (4) communicates with the shape chamber (3a) of cylinder head (3), on the wall of cylinder head (3), offer inlet hole (3b) and oil drainage hole (3c), wherein one of inlet hole (3b) with cylinder liner (1d) on exhaust port (1b) connection, other end communicate with the shape chamber (3a) of cylinder head; End face, an other end that connects to cylinder head (3) of oil drainage hole (3c) also communicates with the shape chamber (3a) of cylinder head (3), it is characterized in that:
A, offer spill port (1c) on the wall of described cylinder liner (1d), one of this spill port (1c) communicates with oil drainage hole (3c) on the described cylinder head (3), and the other end of spill port (1c) connects to the end face of bent axle box-shaped cavity (1a) open-mouth end;
The shape chamber (2a) of B, described crankcase cover (2) is separated into inside and outside two chambers by being total to wall (2b), the shape size of inner cavity chamber's part in shape chamber (2a) adapts with the shape size of described bent axle box-shaped cavity (1a), and the inner cavity chamber in crankcase cover shape chamber (2a) part communicates with the shape chamber (1a) of crankcase; Offer drainback passage (2c) on the wall (2b) altogether described, the import of this drainback passage (2c) is positioned at the end face of common wall (2b) upper end, and communicates with described spill port (1c), and the outlet of drainback passage (2c) is positioned on the madial wall of common wall (2b).
2, a kind of universal vertical shaft petrol engine according to claim 1, it is characterized in that: the exhaust port (1b) on the described cylinder liner (1d) is positioned at the top of spill port (1c), and the center line of the center line of exhaust port (1b) and the last inlet hole (3b) of described cylinder head (3) coincides.
3, a kind of universal vertical shaft petrol engine according to claim 1 and 2 is characterized in that: the spill port (1c) on the described cylinder liner (1d) is made up of a cross-drilled hole and a vertical core, be "
" shape, the center line of oil drainage hole (3c) coincides on the center line of its cross-drilled hole part and the described cylinder head.
4, a kind of universal vertical shaft petrol engine according to claim 3 is characterized in that: the drainback passage (2c) on the described wall (2b) altogether also is made up of a cross-drilled hole and a vertical core, be "
" shape, the center line of the center line of its vertical core part and spill port (1c) vertical core part coincides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710078276A CN100585137C (en) | 2007-03-12 | 2007-03-12 | Universal vertical shaft petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710078276A CN100585137C (en) | 2007-03-12 | 2007-03-12 | Universal vertical shaft petrol engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021173A CN101021173A (en) | 2007-08-22 |
| CN100585137C true CN100585137C (en) | 2010-01-27 |
Family
ID=38709042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710078276A Expired - Fee Related CN100585137C (en) | 2007-03-12 | 2007-03-12 | Universal vertical shaft petrol engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100585137C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061850A (en) * | 2012-12-26 | 2013-04-24 | 重庆长安汽车股份有限公司 | Crankcase ventilation oil returning structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4771745A (en) * | 1986-03-22 | 1988-09-20 | Mitsubishi Jidosha Kogyo Kabushiki Kaishi | Structure of internal combustion engine |
| US6032635A (en) * | 1995-07-06 | 2000-03-07 | Tecumseh Products Company | Overhead cam engine with integral head |
| CN1312427A (en) * | 2000-03-07 | 2001-09-12 | 本田技研工业株式会社 | Oil return structure in engine |
| CN1532378A (en) * | 2003-03-18 | 2004-09-29 | 本田技研工业株式会社 | OHV type engine |
| CN201013418Y (en) * | 2007-03-13 | 2008-01-30 | 力帆实业(集团)有限公司 | Universal vertical axis petrol engine |
-
2007
- 2007-03-12 CN CN200710078276A patent/CN100585137C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4771745A (en) * | 1986-03-22 | 1988-09-20 | Mitsubishi Jidosha Kogyo Kabushiki Kaishi | Structure of internal combustion engine |
| US6032635A (en) * | 1995-07-06 | 2000-03-07 | Tecumseh Products Company | Overhead cam engine with integral head |
| CN1312427A (en) * | 2000-03-07 | 2001-09-12 | 本田技研工业株式会社 | Oil return structure in engine |
| CN1532378A (en) * | 2003-03-18 | 2004-09-29 | 本田技研工业株式会社 | OHV type engine |
| CN201013418Y (en) * | 2007-03-13 | 2008-01-30 | 力帆实业(集团)有限公司 | Universal vertical axis petrol engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101021173A (en) | 2007-08-22 |
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Granted publication date: 20100127 Termination date: 20200312 |