CN109630253B - Engine oil circuit structure and engine - Google Patents
Engine oil circuit structure and engine Download PDFInfo
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- CN109630253B CN109630253B CN201811525275.1A CN201811525275A CN109630253B CN 109630253 B CN109630253 B CN 109630253B CN 201811525275 A CN201811525275 A CN 201811525275A CN 109630253 B CN109630253 B CN 109630253B
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- oil
- cooling nozzle
- piston cooling
- engine
- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/04—Pressure lubrication using pressure in working cylinder or crankcase to operate lubricant feeding devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the technical field of engines, in particular to an engine oil way structure and an engine. The engine oil circuit structure comprises an engine body, an oil supply oil circuit and a crankshaft shaft hole which are mutually communicated are arranged in the engine body, the engine oil circuit structure further comprises a piston cooling nozzle, the piston cooling nozzle is respectively communicated with the crankshaft shaft hole and a cylinder hole, and cooling oil sequentially flows into the oil supply oil circuit, the crankshaft shaft hole and the piston cooling nozzle to enter the cylinder hole. According to the invention, the piston cooling nozzle is respectively communicated with the crankshaft shaft hole and the cylinder hole, so that the piston cooling nozzle can directly take cooling oil from the crankshaft shaft hole. Compared with the prior art that the oil supply oil way is independently arranged for the piston cooling nozzle, the piston cooling nozzle directly takes the cooling oil from the oil supply oil way formed by the crankshaft and the crankshaft shaft hole, so that an additional special oil way is reduced, the difficulty in independently arranging the oil supply oil way for the piston cooling nozzle can be reduced, the structural arrangement of an engine body is convenient, and the lightweight design of the engine body is realized.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine oil way structure and an engine.
Background
With the continuous progress of gasoline engine technology, increasing the compression ratio of a gasoline engine has become one of the common application methods, after increasing the compression ratio of the engine, the thermal load of combustion of the drilling machine is increased, and knocking is easily generated.
The piston cooling nozzle usually needs to take oil from a specially arranged oil passage, such as an engine cylinder lubricating oil-way system disclosed in chinese patent document CN204511556U, in which the piston cooling nozzle is directly communicated with the main oil passage, and the piston cooling nozzle takes oil from the main oil passage to cool the piston. Although this arrangement can intuitively and effectively supply the cooling oil to the piston, it is not favorable for the layout of the oil passage and the lightweight design of the engine body in terms of the design of the engine body. Simultaneously current nozzle adopts one side two round pins location, when the deviation appears in the location, directly can produce the oil inlet of nozzle and hit the poor problem of target efficiency.
Therefore, an engine oil path structure is needed to be provided, which can solve the problem that a special oil path needs to be designed for a piston cooling nozzle to take oil in the prior art.
Disclosure of Invention
The invention aims to provide an engine oil way structure which can enable a piston cooling nozzle to take oil from oil supply oil ways formed by other cavities, cool a piston and realize the lightweight design of an engine body.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an engine oil circuit structure, includes the engine body, internal fuel feeding oil circuit and the bent axle shaft hole of being provided with of engine, fuel feeding oil circuit and bent axle shaft hole intercommunication still include piston cooling nozzle, piston cooling nozzle one end with bent axle shaft hole intercommunication, the other end and cylinder bore intercommunication, the cooling oil flows in proper order the fuel feeding oil circuit bent axle shaft hole with piston cooling nozzle gets into in the cylinder bore.
Preferably, a piston cooling nozzle oil path is further arranged in the engine body and is respectively communicated with the crankshaft shaft hole and the cylinder hole; the piston cooling nozzle is arranged in the piston cooling nozzle oil way, and the central axis of the piston cooling nozzle oil way is a straight line.
Preferably, the oil injection port of the piston cooling nozzle is a conical port.
Preferably, the oil injection port of the piston cooling nozzle is aligned with the piston oil inlet hole in the cylinder bore.
Preferably, the piston cooling nozzle includes a first connection pipe and a second connection pipe, and the first connection pipe and the second connection pipe are connected.
Preferably, the first connecting pipe is in clearance fit connection with the piston cooling nozzle oil passage.
Preferably, the second connecting pipe is connected with the piston cooling nozzle oil path in an interference fit manner.
Preferably, the first connecting pipe comprises an oil injection pipe and an oil passing pipe, the oil passing pipe is respectively connected with the oil injection pipe and the second connecting pipe, and the diameter of the oil passing pipe is smaller than that of the second connecting pipe.
Preferably, the oil injection pipe is a conical pipe, and the large end of the oil injection pipe is connected with the oil passing pipe.
The invention also provides an engine which comprises the engine oil way structure.
The invention has the beneficial effects that:
according to the invention, the piston cooling nozzle is respectively communicated with the crankshaft shaft hole and the cylinder hole, so that the piston cooling nozzle can directly take cooling oil from the crankshaft shaft hole. Compared with the prior art in which the oil supply oil way is separately arranged for the piston cooling nozzle, the piston cooling nozzle in the embodiment directly takes the cooling oil from the oil supply oil way formed by the crankshaft and the crankshaft shaft hole, so that an extra special oil duct is reduced, the difficulty in separately arranging the oil supply oil way for the piston cooling nozzle can be reduced, the structural arrangement of the engine body is facilitated, and the lightweight design of the engine body is also realized.
According to the engine provided by the invention, in the design process of the engine, a special oil supply oil path for designing the piston cooling nozzle is not needed, the piston cooling nozzle is communicated with the crankshaft shaft hole, and cooling oil is directly taken from the crankshaft shaft hole, so that the light design of the oil supply oil path of the engine can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a first view angle of an engine oil path structure provided by an embodiment of the invention;
FIG. 2 is a bottom view of the engine oil circuit configuration provided in FIG. 1;
FIG. 3 is a schematic illustration of the engine block and piston cooling nozzle after installation;
fig. 4 is a schematic view of the piston cooling nozzle of fig. 3.
In the figure:
1. an engine body; 11. an oil supply path; 12. the piston cools the oil circuit of the nozzle; 13. a crankshaft shaft hole; 14. a cylinder bore; 15. (ii) a 2. A piston cooling nozzle; 21. a first connecting pipe; 211 an oil spray pipe; 212. passing through an oil pipe; 22. A second connecting pipe.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
The embodiment provides an oil circuit structure of an engine, as shown in fig. 1-3, which includes an engine body 1 and a piston cooling nozzle 2, wherein an oil supply circuit 11 and a crankshaft shaft hole 13 are arranged in the engine body 1, the oil supply circuit 11 is communicated with the crankshaft shaft hole 13 to provide lubricating oil for a crankshaft bearing bush, the piston cooling nozzle 2 is respectively communicated with the crankshaft shaft hole 13 and a cylinder hole 14, and cooling oil sequentially flows into the oil supply circuit 11, the crankshaft shaft hole 13 and the piston cooling nozzle 2 and then enters the cylinder hole 14. The piston cooling nozzle 2 can take lubricating oil from an oil path formed by a crankshaft bearing bush and a crankshaft shaft hole 13 to provide cooling oil for the piston, so that the oil in the oil supply path 11 indirectly enters the cylinder hole 14, and the purpose of cooling the piston is achieved.
Wherein this oil feed oil circuit 11 can be for main oil feed oil circuit, also can be vice oil feed oil circuit, as long as can provide lubricating oil for the bent axle bush can, compare with setting up specific oil feed oil circuit for piston cooling nozzle 2 alone among the prior art, piston cooling nozzle 2 directly takes the cooling oil from the oil circuit that bent axle bush and bent axle shaft hole 13 formed in this embodiment, need not additionally to design special oil duct, can reduce the degree of difficulty that sets up the oil feed oil circuit alone for piston cooling nozzle 2, the engine body 1 structural arrangement of being convenient for, the lightweight design to engine body 1 has also been realized simultaneously.
In order to assemble and position the piston cooling nozzle 2, a piston cooling nozzle oil path 12 is also arranged in the engine body 1; the piston cooling nozzle 2 is arranged in a piston cooling nozzle oil path 12, the piston cooling nozzle oil path 12 is communicated with a crankshaft shaft hole 13 and a cylinder hole 14 respectively to ensure that the piston cooling nozzle 2 can be communicated with the crankshaft shaft hole 13 and the cylinder hole 14, and the central axis of the piston cooling nozzle oil path 12 is a straight line. This piston cooling nozzle oil circuit 12 and piston cooling nozzle 2 are the straight tube structure promptly, and the fuel sprayer of piston cooling nozzle 2 aligns with the piston oil inlet hole that is located cylinder hole 14, guarantees the targeting efficiency of cooling oil.
Meanwhile, the oil spray opening of the piston cooling nozzle 2 is a conical opening, and the conical opening provides guidance for the cooling oil to flow from the inside of the piston cooling nozzle 2, so that the cooling oil is sprayed out from the piston cooling nozzle 2 more intensively and cannot be sprayed in a divergent manner; compare current piston cooling nozzle for bending structure, the promotion coolant liquid that this kind of structure can be better hits target efficiency, improves the rate of accuracy that cooling oil got into the piston oil inlet from piston cooling nozzle 2 promptly. The concrete position of the oil injection port of the piston cooling nozzle 2 can be ensured powerfully. Simultaneously, the piston cooling nozzle 2 that provides in this embodiment, for current piston cooling nozzle, the processing technology requirement greatly reduced because piston cooling nozzle is bending structure among the prior art, this kind of bending structure processing technology requirement is high, if there is the error in the angle of buckling a little in the course of working, often can cause piston cooling nozzle among the prior art can not aim at the oil inlet of piston, makes the efficiency of targeting reduce by a wide margin. Even if the piston cooling nozzle 2 provided in the embodiment has a certain error, the target shooting efficiency can be ensured, and the processing technology is reduced.
The piston cooling nozzle 2 is of one-piece construction in this embodiment. As shown in fig. 3 and 4, the piston cooling nozzle 2 includes a first connection pipe 21 and a second connection pipe 22, a rear portion of the first connection pipe 21 is connected to a head portion of the second connection pipe 22, the second connection pipe 22 is a straight pipe, and a diameter of the rear portion of the first connection pipe 21 is smaller than a diameter of the second connection pipe 22. Of course, in other embodiments, the piston cooling nozzle 2 may also be a split structure, and the first connection pipe 21 and the second connection pipe 22 may be connected by welding. First connecting pipe 21 and piston cooling nozzle oil circuit 12 clearance fit are connected in this embodiment, because the afterbody diameter of first connecting pipe 21 is less than the diameter of second connecting pipe 22, this kind of setting can realize that piston cooling nozzle oil circuit 12 designs the tang and carries out axial positioning to piston cooling nozzle 2, and the above-mentioned limited locate mode that can save two round pins in one side among the prior art guarantees piston cooling nozzle 2's location, can also guarantee piston cooling nozzle 2 and hit target efficiency. Meanwhile, the inner diameter of the piston cooling nozzle oil path 12 is gradually reduced, and the targeting efficiency of the cooling oil can also be improved. It should be noted that, if the positioning portion of the first connecting pipe 21 and the piston cooling nozzle oil path 12 is long, the first connecting pipe and the piston cooling nozzle oil path can be assembled in a transition fit manner, and both the assembly and the positioning can be achieved.
In order to facilitate the installation of the piston cooling nozzle 2, the second connecting pipe 22 is connected with the piston cooling nozzle oil path 12 in an interference fit manner, no gap exists between the second connecting pipe 22 and the piston cooling nozzle oil path 12, and cooling oil can be prevented from entering between the second connecting pipe 22 and the piston cooling nozzle oil path 12 to cause the waste of part of the cooling oil.
During installation, the piston cooling nozzle 2 is firstly installed in the piston cooling nozzle oil passage 12 of the engine body 1, and then a crankshaft bearing bush and a crankshaft are installed in the crankshaft shaft hole 13, so that the installation task of the piston cooling nozzle 2 can be realized.
As shown in fig. 4, the first connection pipe 21 includes an oil injection pipe 211 and an oil passing pipe 212, the oil passing pipe 212 is respectively connected to the oil injection pipe 211 and the second connection pipe 22, and the diameter of the oil passing pipe 212 is smaller than that of the second connection pipe 22. The oil spout pipe 211 is the toper pipe, and the oil spout pipe 211 main aspects is connected with oil pipe 212. Specifically, the second connection pipe 22 and the oil passing pipe 212 may be integrally connected, and of course, the second connection pipe 22 and the oil passing pipe 212 may also be connected by welding.
Because the engine body 1 is great, the length of the piston cooling nozzle oil path 12 is relatively long, the length of the piston cooling nozzle 2 in the piston cooling nozzle oil path 12 is also relatively long, the piston cooling nozzle 2 is not easy to process, and in order to take the processing convenience into consideration, the piston cooling nozzle 2 can be arranged into a split type structure, and specifically, the first connecting pipe 21 and the second connecting pipe 22 can be welded and connected into the whole piston cooling nozzle 2.
The embodiment also provides an engine which comprises the engine oil way structure provided by the embodiment. In the design process of the engine, a special oil supply oil way does not need to be designed for the piston cooling nozzle 2, the piston cooling nozzle 2 is communicated with the crankshaft shaft hole 13, cooling oil is directly taken from the crankshaft shaft hole 13, and the lightweight design of the engine oil way can be realized.
It is noted that the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (6)
1. An engine oil way structure comprises an engine body (1), wherein an oil supply way (11) and a crankshaft shaft hole (13) are arranged in the engine body (1), the oil supply way (11) is communicated with the crankshaft shaft hole (13), and the engine oil way structure is characterized by further comprising a piston cooling nozzle (2), one end of the piston cooling nozzle (2) is communicated with the crankshaft shaft hole (13), the other end of the piston cooling nozzle is communicated with a cylinder hole (14), and cooling oil sequentially flows into the oil supply way (11), the crankshaft shaft hole (13) and the piston cooling nozzle to enter the cylinder hole (14);
a piston cooling nozzle oil way (12) is further arranged in the engine body (1), and the piston cooling nozzle oil way (12) is respectively communicated with the crankshaft shaft hole (13) and the cylinder hole (14); the piston cooling nozzle (2) is arranged in the piston cooling nozzle oil way (12), and the central axis of the piston cooling nozzle oil way (12) is a straight line;
the piston cooling nozzle (2) comprises a first connecting pipe (21) and a second connecting pipe (22), and the first connecting pipe (21) and the second connecting pipe (22) are connected; the first connecting pipe (21) is in clearance fit connection with the piston cooling nozzle oil way (12); the second connecting pipe (22) is connected with the piston cooling nozzle oil way (12) in an interference fit mode.
2. The engine oil circuit structure according to claim 1, characterized in that the oil injection port of the piston cooling nozzle (2) is a tapered port.
3. The engine oil circuit structure according to claim 1, characterized in that the oil jet of the piston cooling nozzle (2) is aligned with a piston oil inlet hole located in the cylinder bore (14).
4. The engine oil circuit structure according to claim 1, characterized in that the first connecting pipe (21) includes an oil injection pipe (211) and an oil passing pipe (212), the oil passing pipe (212) connects the oil injection pipe (211) and the second connecting pipe (22), respectively, and the diameter of the oil passing pipe (212) is smaller than that of the second connecting pipe (22).
5. The engine oil circuit structure according to claim 4, characterized in that the oil jet pipe (211) is a tapered pipe, and a large end thereof is connected to the oil feed pipe (212).
6. An engine characterized by comprising the engine oil circuit structure according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525275.1A CN109630253B (en) | 2018-12-13 | 2018-12-13 | Engine oil circuit structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525275.1A CN109630253B (en) | 2018-12-13 | 2018-12-13 | Engine oil circuit structure and engine |
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| Publication Number | Publication Date |
|---|---|
| CN109630253A CN109630253A (en) | 2019-04-16 |
| CN109630253B true CN109630253B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811525275.1A Active CN109630253B (en) | 2018-12-13 | 2018-12-13 | Engine oil circuit structure and engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113281050B (en) * | 2021-05-11 | 2022-08-02 | 华中科技大学 | Pressure oil supply type piston oscillation cooling visual test device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002021558A (en) * | 2000-05-17 | 2002-01-23 | Man Nutzfahrzeuge Ag | Piston cooling system for internal combustion enegine |
| CN101038007A (en) * | 2006-03-14 | 2007-09-19 | 通用汽车环球科技运作公司 | Connecting rod with oil squirter |
| CN101158299A (en) * | 2007-11-07 | 2008-04-09 | 奇瑞汽车有限公司 | Engine cylinder block lubricant oil path |
| CN201277071Y (en) * | 2008-09-11 | 2009-07-22 | 昆明理工大学 | Engine oil nozzle of diesel engine |
| CN201705447U (en) * | 2010-04-28 | 2011-01-12 | 浙江吉利汽车研究院有限公司 | Engine piston cooling system |
| CN207064096U (en) * | 2017-07-21 | 2018-03-02 | 重庆长安汽车股份有限公司 | A kind of Lubricating oil channel of engine cylinder body arrangement |
-
2018
- 2018-12-13 CN CN201811525275.1A patent/CN109630253B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002021558A (en) * | 2000-05-17 | 2002-01-23 | Man Nutzfahrzeuge Ag | Piston cooling system for internal combustion enegine |
| CN101038007A (en) * | 2006-03-14 | 2007-09-19 | 通用汽车环球科技运作公司 | Connecting rod with oil squirter |
| CN101158299A (en) * | 2007-11-07 | 2008-04-09 | 奇瑞汽车有限公司 | Engine cylinder block lubricant oil path |
| CN201277071Y (en) * | 2008-09-11 | 2009-07-22 | 昆明理工大学 | Engine oil nozzle of diesel engine |
| CN201705447U (en) * | 2010-04-28 | 2011-01-12 | 浙江吉利汽车研究院有限公司 | Engine piston cooling system |
| CN207064096U (en) * | 2017-07-21 | 2018-03-02 | 重庆长安汽车股份有限公司 | A kind of Lubricating oil channel of engine cylinder body arrangement |
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| CN109630253A (en) | 2019-04-16 |
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