CN117266982A - Shafting cooling system of engine rotary opposed pistons and engine - Google Patents
Shafting cooling system of engine rotary opposed pistons and engine Download PDFInfo
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- CN117266982A CN117266982A CN202311235460.8A CN202311235460A CN117266982A CN 117266982 A CN117266982 A CN 117266982A CN 202311235460 A CN202311235460 A CN 202311235460A CN 117266982 A CN117266982 A CN 117266982A
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- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 230000007704 transition Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 259
- 239000010705 motor oil Substances 0.000 description 14
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/02—Pistons
- F02B55/04—Cooling thereof
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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
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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
- F01P3/10—Cooling by flow of coolant through pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
-
- 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
- F01P2003/006—Liquid cooling the liquid being oil
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention relates to a shafting cooling system of a rotary opposed piston of an engine and the engine, wherein the shafting cooling system comprises a power output shaft and a nested shaft nested and matched with the power output shaft, a power output shaft oil inlet passage and a power output shaft oil outlet passage are formed in the power output shaft along an axis, a power output shaft oil inlet manifold and a power output shaft oil outlet manifold are correspondingly formed between the power output shaft oil inlet passage and the power output shaft oil outlet passage, and the power output shaft oil inlet manifold and the power output shaft oil outlet manifold are radially formed corresponding to different cross sections of the power output shaft and are communicated with a power output shaft first piston and a power output shaft second piston; the nested shaft is provided with an nested shaft oil inlet channel and an oil outlet channel along the direction parallel to the axis of the nested shaft, and nested shaft oil inlet manifold channels and oil outlet manifold channels which are communicated with the first piston and the second piston of the nested shaft are arranged in different cross section directions; the oil inlet ring groove and the oil outlet ring groove of the nested shaft are in one-to-one correspondence with the oil inlet oil shoe and the oil outlet oil shoe, so that an oil inlet main channel and an oil outlet main channel of the nested shaft are formed.
Description
Technical Field
The invention relates to the technical field of internal combustion engines, in particular to a shafting cooling system for rotating opposite pistons of an engine and the engine.
Background
Because of the special structure of the rotary opposed piston engine, the working frequency of the rotary opposed piston engine is twice that of the traditional reciprocating piston internal combustion engine at the same rotating speed; an in-cylinder direct injection rotary opposed-piston engine as disclosed in patent document CN113006932a, which does not have the disadvantage of low thermal efficiency due to the long and narrow nature of the combustion chamber, compared to the wankel engine (triangular piston engine invented by Feiwang gram FelixHeinrichWankle in germany in 1954); compared with a two-stroke engine, the intake and exhaust strokes of the rotary opposed piston engine are relatively independent, and the ventilation efficiency is more sufficient. The rotary opposed piston engine eliminates a complex crank-link mechanism and a valve mechanism, and realizes miniaturization and light weight of the internal combustion engine.
In addition, the rotary opposed piston engine has simple structure, stable operation and low noise, effectively breaks through the bottleneck of the traditional reciprocating piston engine power lifting, and is expected to be applied to hybrid electric vehicles, small unmanned aerial vehicles, armored vehicle auxiliary power systems and the like as a high-power-density engine.
Because the rotary opposed piston engine has a shorter working cycle, the heat dissipated by the cooling liquid is about 65% of that of the traditional reciprocating piston engine, thereby obviously reducing the energy consumption loss of cooling and heat dissipation and improving the energy transfer efficiency of the engine; however, less heat loss through the coolant results in higher heat loads for the rotary opposed piston engine, resulting in higher temperatures at the combustion chamber walls, affecting engine reliability. The piston surface and the shaft surface are part of the combustion chamber wall, so that an efficient cooling system is designed for the piston and shaft system. As a new type of internal combustion engine, a rotary opposed piston engine has not been reported and described in the related art about the design of rotary opposed piston engine piston and shafting cooling systems.
Therefore, how to provide a shafting cooling system for an engine rotating opposed piston is a need for solving the problem of those skilled in the art.
Disclosure of Invention
Therefore, one object of the present invention is to provide a shafting cooling system for a rotary opposed piston of an engine, and another object is to provide an engine with a shafting cooling system for a rotary opposed piston, which solves the problem of cooling the rotary opposed piston engine.
The invention provides a shafting cooling system of a rotary opposite piston of an engine, which comprises the following components:
the power output shaft is provided with a shaft shoulder at one end, the shaft shoulder extends outwards to form a piston mounting section of the power output shaft, a first piston of the power output shaft and a second piston of the power output shaft are oppositely mounted on the piston mounting section, and the other end of the power output shaft is a nested end; the power output shaft is internally provided with a power output shaft oil inlet passage and a power output shaft oil outlet passage from one end to the other end along the axis, and a power output shaft oil inlet manifold and a power output shaft oil outlet manifold are correspondingly arranged between the power output shaft oil inlet passage and the power output shaft oil outlet passage, are radially arranged corresponding to different cross sections of the power output shaft, and are communicated with a power output shaft first piston and a power output shaft second piston;
the other end of the power output shaft is embedded into a nested shaft hole of the nested shaft concentric with the power output shaft and extends out of the nested shaft hole; the shaft shoulder is matched with the end face of the nested shaft hole; a first piston of the nested shaft and a second piston of the nested shaft are oppositely arranged on the nested shaft close to the shaft shoulder side; the nested shaft is provided with a nested shaft oil inlet channel and a nested shaft oil outlet channel along the direction parallel to the axis of the nested shaft, and the nested shaft is provided with a nested shaft oil inlet manifold and a nested shaft oil outlet manifold which are communicated with a first piston of the nested shaft and a second piston of the nested shaft in different cross section directions;
the outer walls of the nested shafts, which are far away from the first piston of the nested shafts and the second piston side of the nested shafts, are provided with nested shaft oil inlet ring grooves and nested shaft oil outlet ring grooves, and the nested shaft oil inlet ring grooves and the nested shaft oil outlet ring grooves are in one-to-one correspondence with the oil inlet oil shoes and the oil outlet oil shoes, and form a nested shaft oil inlet main channel and a nested shaft oil outlet main channel.
Further, the first piston of the power output shaft and the second piston of the power output shaft have the same structure, the bottom of the first piston of the power output shaft is provided with a first piston pin of the power output shaft, the first piston pin of the power output shaft is matched with a first piston pin groove of the power output shaft arranged on the piston mounting section of the power output shaft, and the second piston pin of the power output shaft at the bottom of the second piston of the power output shaft is matched with a second piston pin groove of the power output shaft arranged on the piston mounting section of the power output shaft;
the first piston of the nested shaft and the second piston of the nested shaft have the same structure, and the bottom of the first piston of the nested shaft is provided with a first piston pin of the nested shaft and is matched with a first piston pin groove of the nested shaft, which is arranged on the side, close to the shaft shoulder, of the nested shaft; and the second piston pin of the nested shaft is matched with a second piston pin groove of the nested shaft, which is arranged near the shaft shoulder side of the nested shaft.
Further, the inner diameter of the oil inlet oil bushing is the same as the outer diameter of the nested shaft and is in concentric transition fit, the oil inlet oil bushing is provided with an oil inlet hole and an oil inlet groove, and the oil inlet groove and the oil inlet ring groove of the nested shaft form a main oil inlet channel of the nested shaft;
the inner diameter of the oil outlet oil shoe is the same as the outer diameter of the nested shaft and is in concentric transition fit with the outer diameter of the nested shaft, the oil outlet shoe is provided with an oil outlet hole and an oil outlet groove, and the oil outlet groove and the oil outlet ring groove of the nested shaft form a main oil outlet channel of the nested shaft.
Further, the power output shaft oil inlet manifold and the power output shaft oil outlet manifold are linear channels and are positioned on different sections of the power output shaft; the oil inlet manifold of the nested shaft and the oil outlet manifold of the nested shaft are arc-shaped channels and are positioned on different sections of the nested shaft.
Further, the internal oil passages of the power output shaft first piston and the power output shaft second piston each include: the bottom of the first piston of the power output shaft is provided with a first piston oil inlet hole and a first piston oil outlet hole, one end of the first piston oil inlet hole is communicated with the first power output shaft oil inlet manifold, and the other end of the first piston oil inlet hole is communicated with the first piston end surface oil inlet manifold; one end of the piston oil outlet hole I is communicated with the piston end face oil outlet channel I, and the other end of the piston oil outlet hole I is communicated with the power output shaft oil outlet manifold; the first piston end face oil inlet channel is communicated with the first piston end face oil outlet channel through a plurality of first piston circumferential oil channels.
Further, the inner oil passages of the nested shaft first piston and the nested shaft second piston each include: a second piston oil inlet hole and a second piston oil outlet hole are formed in the bottom of the first piston of the nested shaft, one end of the second piston oil inlet hole is communicated with the oil inlet manifold of the nested shaft, and the other end of the second piston oil inlet hole is communicated with the oil inlet passage of the end face of the second piston; one end of the second piston oil outlet hole is communicated with the second piston end surface oil outlet channel, and the other end of the second piston oil outlet hole is communicated with the nested shaft oil outlet manifold; the second oil inlet channel of the piston end surface is communicated with the second oil outlet channel of the piston end surface through a plurality of second piston circumferences Xiang Youdao.
The engine with the rotary opposed piston shafting cooling system comprises an engine body and the shafting cooling system of the engine rotary opposed piston, wherein the shafting cooling system is matched with the engine.
Compared with the prior art, the shafting cooling system for the rotary opposed pistons of the engine has the advantages that through independent design of the power output shaft oil passage and the nested shaft oil passage, engine oil smoothly flows through the pistons and the shafting inner oil passage, and further reliable cooling of the rotary opposed piston engine is achieved.
The power output shaft oil inlet channel and the power output shaft oil outlet channel are both positioned on the axis of the power output shaft, the power output shaft oil inlet manifold and the power output shaft oil outlet manifold are linear channels, and the power output shaft oil inlet manifold and the power output shaft oil outlet manifold are arranged on the cross sections of different power output shafts, so that the direct communication of the power output shaft oil inlet channel and the power output shaft oil outlet channel is avoided, and further the short circuit of engine oil is avoided.
Because the nested shaft is provided with the nested shaft hole along the axis direction and is matched with the power output shaft, the nested shaft is a hollow shaft, therefore, the nested shaft oil inlet manifold and the nested shaft oil outlet manifold are arc-shaped, and the nested shaft oil inlet manifold and the nested shaft oil outlet manifold are in different nested shaft sections, so that direct communication of the nested shaft oil inlet manifold and the nested shaft oil outlet manifold is avoided, and further engine oil short circuit is avoided.
Every two opposite pistons of the rotary opposite piston engine are respectively connected with the power output shaft and the nested shaft in a one-to-one correspondence manner, and the two shafts are nested and matched and supported by the engine cylinder body. In order to realize four strokes of exhaust, air intake, compression and expansion work, two groups of pistons are required to drive a power output shaft and a sleeve shaft to do the same-direction rotary motion in different modes respectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a shafting cooling system for a rotary opposed piston of an engine in accordance with the present invention;
FIG. 2 is a schematic diagram of a structural assembly of a shafting cooling system for a rotary opposed piston of an engine;
FIG. 3 is a schematic view showing the structure of an internal oil passage of the power output shaft;
FIG. 4 is a left side view of the power take-off shaft of FIG. 3;
FIG. 5 is a schematic view of the structure of the internal oil gallery of the nested shaft;
FIG. 6 is a left side view of the quill of FIG. 5;
FIG. 7 is a schematic view of the structure of the internal oil passage of the first piston (second piston) of the power take-off shaft and its wrist pin;
FIG. 8 is a bottom view of FIG. 7;
FIG. 9 is a schematic view of the internal oil gallery of a first piston (second piston) of a nested shaft and its wrist pin;
FIG. 10 is a bottom view of FIG. 9;
FIG. 11 is a schematic diagram of the structure of the oil-producing shoe;
FIG. 12 is a schematic view of the structure of an oil feed shoe.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Because the rotary opposed piston engine has simple structure, stable operation and lower noise, the bottleneck of the power improvement of the traditional reciprocating piston engine is effectively broken through, and the rotary opposed piston engine is used as a high-power-density engine and is expected to be applied to hybrid electric vehicles, small unmanned aerial vehicles, armored vehicle auxiliary power systems and the like. Because of the fact that the cooling system of the rotary opposed piston engine is studied less at present, the embodiment of the invention discloses a shafting cooling system of the rotary opposed piston of the engine, which is shown in the accompanying drawings 1-6 and comprises:
the power output shaft 1, wherein one end of the power output shaft 1 is provided with a shaft shoulder 13, the shaft shoulder 13 extends outwards to form a piston mounting section of the power output shaft, the piston mounting section is provided with a first piston 3 of the power output shaft and a second piston 4 of the power output shaft in an opposite way, and the other end of the power output shaft 1 is a nested end; a power output shaft oil inlet channel 11 and a power output shaft oil outlet channel 12 are formed in the power output shaft 1 from one end to the other end along the axis, and a power output shaft oil inlet manifold and a power output shaft oil outlet manifold are correspondingly formed between the power output shaft oil inlet channel 11 and the power output shaft oil outlet channel 12, are radially formed corresponding to different cross sections of the power output shaft 1, and are communicated with a power output shaft first piston 3 and a power output shaft second piston 4; engine oil enters the power output shaft oil inlet duct 11 through an engine oil pump, is split through the power output shaft oil inlet manifold (first oil inlet manifold 111 and second oil inlet manifold 112), enters the internal oil ducts of the power output shaft first piston 3 and the power output shaft second piston 4, and then is converged to the power output shaft oil outlet duct 12 through the power output shaft oil outlet manifold (first oil outlet manifold 121 and second oil outlet manifold 122), enters an engine oil pan, and cooling flow is completed.
A nested shaft 2, wherein the other end of the power output shaft 1 is embedded into a nested shaft hole 21 of the nested shaft 2 concentric with the nested shaft, and extends out of the nested shaft hole 21; the shaft shoulder 13 is matched with the end face of the nested shaft hole 21; a first piston 5 of the nested shaft and a second piston 6 of the nested shaft are oppositely arranged on the side, close to the shaft shoulder 13, of the nested shaft 2; the nested shaft 2 is provided with a nested shaft oil inlet duct 25 and a nested shaft oil outlet duct 24 along the direction parallel to the axis, and the nested shaft 2 is provided with nested shaft oil inlet manifold channels (an oil inlet manifold channel III 251, an oil inlet manifold channel IV 252) and nested shaft oil outlet manifold channels (an oil outlet manifold channel III 241, an oil outlet manifold channel IV 242) which are communicated with the nested shaft first piston 5 and the nested shaft second piston 6 in different cross section directions;
the oil inlet oil tile 8 and the oil outlet oil tile 7, wherein the outer wall of the nested shaft 2, which is far away from the side of the first piston 5 and the second piston 6 of the nested shaft, is provided with a nested shaft oil inlet ring groove 22 and a nested shaft oil outlet ring groove 23, and the nested shaft oil inlet ring groove 22 and the nested shaft oil outlet ring groove 23 are in one-to-one correspondence with the oil inlet oil tile 8 and the oil outlet oil tile 7, and form a nested shaft oil inlet main channel and a nested shaft oil outlet main channel.
The nested shaft oil inlet ring groove 22 and the nested shaft oil outlet ring groove 23 are concentric, the oil inlet oil shoe and the oil outlet oil shoe are static in the running process of the rotary opposed piston engine, the nested shaft moves concentrically relative to the nested shaft, the nested shaft oil inlet ring groove 22 and the oil inlet oil shoe 8 form a nested shaft oil inlet main channel, and the nested shaft oil outlet ring groove 23 and the oil outlet oil shoe 7 form a nested shaft oil outlet main channel.
The oil inlet oil tile, the oil outlet oil tile and the nested shaft rotate relatively, and the static oil tile ensures that an inlet and an outlet of an oil channel of the nested shaft are kept absolutely static, so that an external oil delivery pipe is convenient.
According to the technical scheme provided by the invention, through the independent design of the power output shaft oil passage and the nested shaft oil passage, the engine oil smoothly flows through the piston and the shaft system internal oil passage, and further the reliable cooling of the rotary opposed piston engine is realized.
Referring to fig. 7 and 8, the first piston 3 of the power output shaft and the second piston 4 of the power output shaft have the same structure, taking the first piston 3 of the power output shaft as an example for explanation, the bottom of the first piston 3 of the power output shaft is provided with a first piston pin 31 of the power output shaft, the first piston pin 31 of the power output shaft is matched with a first piston pin slot 141 of the power output shaft arranged on the piston mounting section of the power output shaft 1, and the second piston pin of the power output shaft at the bottom of the second piston 4 of the power output shaft is matched with a second piston pin slot 142 of the power output shaft arranged on the piston mounting section of the power output shaft 1;
referring to fig. 9 and 10, the first piston 5 of the nested shaft and the second piston 6 of the nested shaft have the same structure, and taking the first piston 5 of the nested shaft as an example for illustration, the bottom of the first piston 5 of the nested shaft is provided with a first piston pin 51 of the nested shaft, and the first piston pin slot 261 of the nested shaft is matched with the first piston pin slot 261 of the nested shaft, which is arranged on the side of the nested shaft 2 near the shaft shoulder 13; the second piston pin of the nested shaft is matched with a second piston pin groove 262 of the nested shaft 2, which is arranged near the side of the shaft shoulder 13.
Referring to fig. 11 and 12, the inner diameter of the oil inlet oil bushing 8 is the same as the outer diameter of the nested shaft 2 and is in concentric transition fit, the oil inlet bushing 8 is provided with an oil inlet hole 82 and an oil inlet groove 81, and the oil inlet groove 81 and the nested shaft oil inlet ring groove 22 form a nested shaft oil inlet main channel;
the inner diameter of the oil outlet oil bushing 7 is the same as the outer diameter of the nested shaft and is in concentric transition fit, the oil outlet bushing 7 is provided with an oil outlet 72 and an oil outlet groove 71, and the oil outlet groove 71 and the nested shaft oil outlet ring groove 23 form a nested shaft oil outlet main channel.
The oil inlet manifold of the power output shaft and the oil outlet manifold of the power output shaft are linear channels and are positioned on different sections of the power output shaft 1; the oil inlet manifold of the nested shaft and the oil outlet manifold of the nested shaft are arc-shaped channels and are positioned on different sections of the nested shaft 2.
Specifically, the power output shaft oil inlet manifold (the first oil inlet manifold 111 and the second oil inlet manifold 112) and the power output shaft oil outlet manifold (the first oil outlet manifold 121 and the second oil outlet manifold 122) are linear channels, and the power output shaft oil inlet manifold and the power output shaft oil outlet manifold are arranged on different power output shaft sections, so that the direct communication of the power output shaft oil inlet duct 11 and the power output shaft oil outlet duct 12 is avoided, and further the short circuit of engine oil is avoided; because the shaft hole 21 is formed in the axis direction of the nested shaft 2 and is matched with the shaft shoulder 13 of the power output shaft, the nested shaft 2 is a hollow shaft, and therefore the oil inlet manifold of the nested shaft (the oil inlet manifold III 251, the oil inlet manifold IV 252) and the oil outlet manifold of the nested shaft (the oil outlet manifold III 241 and the oil outlet manifold IV 242) are arc-shaped, and the oil inlet manifold of the nested shaft and the oil outlet manifold of the nested shaft are in different nested shaft sections, so that the direct communication of the oil inlet manifold of the nested shaft and the oil outlet manifold of the nested shaft is avoided, and further the short circuit of engine oil is avoided.
Specifically, the internal oil passages of the power output shaft first piston 3 and the power output shaft second piston 4 each include: the bottom of the first piston 3 of the power output shaft is provided with a first piston oil inlet hole 32 and a first piston oil outlet hole 36, one end of the first piston oil inlet hole 32 is communicated with the first power output shaft oil inlet manifold, and the other end of the first piston oil inlet hole is communicated with a first piston end face oil inlet duct 33; one end of the first piston oil outlet hole 36 is communicated with the first piston end face oil outlet channel 35, and the other end of the first piston oil outlet hole is communicated with the power output shaft oil outlet manifold; the first piston end face oil inlet duct 33 and the first piston end face oil outlet duct 35 are communicated through a plurality of first piston circumferential oil ducts 34.
The inner oil passages of the first piston 5 and the second piston 6 comprise: a second piston oil inlet hole 52 and a second piston oil outlet hole 56 are formed in the bottom of the first piston 5 of the nested shaft, one end of the second piston oil inlet hole 52 is communicated with the first nested shaft oil inlet manifold, and the other end of the second piston oil inlet hole is communicated with a second piston end face oil inlet passage 53; one end of the second piston oil outlet hole 56 is communicated with the second piston end surface oil outlet channel 55, and the other end of the second piston oil outlet hole is communicated with the nested shaft oil outlet manifold; the second piston end face oil inlet passage 53 is communicated with the second piston end face oil outlet passage 55 through a plurality of second piston circumferences Xiang Youdao and 54.
The invention also provides an engine with the rotary opposite piston shafting cooling system, which comprises an engine body and the shafting cooling system of the rotary opposite piston of the engine matched with the engine. Every two opposite pistons of the rotary opposite piston engine are respectively connected with the power output shaft and the nested shaft in a one-to-one correspondence manner, and the two shafts are nested and matched and supported by the engine cylinder body.
According to the invention, two pairs of opposite pistons 3, 4, 5 and 6 of a rotary opposite piston engine respectively drive a corresponding power output shaft 1 and a nesting shaft 2 to rotate, engine oil enters a power output shaft oil inlet passage 11 formed in the axis of the power output shaft 1 through an engine oil pump for the power output shaft 1, a power output shaft first piston 3 and a power output shaft second piston 4, and is shunted into an oil inlet hole at the bottom of the piston through a power output shaft oil inlet manifold (an oil inlet manifold I111 and an oil inlet manifold II 112), and enters a power output shaft oil outlet manifold (an oil outlet manifold I121 and an oil outlet manifold II 122) after passing through a piston end surface oil inlet passage I, a piston circumferential oil passage I, a piston end surface oil outlet passage I and a piston oil outlet hole in the interior of the piston, and is converged into the power output shaft oil outlet passage 12 through the oil outlet manifold to flow to an engine oil pan to finish cooling.
For the nested shaft 2, the first piston 5 of the nested shaft, the second piston 6 of the nested shaft, the oil outlet bush 7 and the oil outlet bush 8, engine oil enters an oil inlet bush oil inlet hole 82 formed in the oil outlet bush through an engine oil pump, enters a main nested shaft oil inlet channel formed by the oil inlet ring groove 22 of the nested shaft and the oil outlet bush 8, enters the oil inlet channel 25 of the nested shaft through an oil inlet ring channel of the nested shaft, enters the oil inlet channel of the first piston 5 of the nested shaft and the oil inlet hole of the second piston 6 of the nested shaft through a branch pipe (oil inlet channel III 251 and a branch pipe IV 252) of the nested shaft, flows through an oil inlet channel II of the end face of the piston, an oil outlet channel II of the circumferential direction of the piston, and an oil outlet channel II of the end face of the piston, enters a branch pipe III of the nested shaft through the first piston 5 of the nested shaft and the oil outlet hole of the second piston 6 of the nested shaft, enters a branch pipe IV 242 of the nested shaft, and enters the oil outlet channel 24 of the nested shaft after merging through a branch pipe III of the nested shaft outlet pipe 241 and a branch pipe IV 242 of the nested shaft outlet pipe IV, and the oil outlet channel IV of the nested shaft outlet 24, and the oil outlet channel 23 of the nested shaft outlet channel 72 of the nested shaft outlet bush is formed, and the oil outlet channel 72 of the oil outlet channel of the nested shaft outlet is completed.
According to the invention, the bottoms of the first piston of the power output shaft, the second piston of the power output shaft, the first piston of the nested shaft and the second piston of the nested shaft are provided with piston pins and have the same structural size, and the bottoms of the first piston of the power output shaft and the second piston of the power output shaft are provided with piston pin grooves and have the same structural size; the piston pin is matched with the piston pin groove, synchronous rotation of the shaft and the piston in the working process of the engine is realized, and further, the situation that the piston oil inlet hole is always communicated with the corresponding shaft oil inlet manifold and the piston oil outlet hole is always communicated with the corresponding shaft oil outlet manifold in the working process of the engine is realized.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. A shafting cooling system for a rotary opposed piston of an engine, comprising:
the power output shaft (1), one end of the power output shaft (1) is provided with a shaft shoulder (13), the shaft shoulder (13) extends outwards to form a piston mounting section of the power output shaft, the piston mounting section is provided with a first piston (3) of the power output shaft and a second piston (4) of the power output shaft in an opposite way, and the other end of the power output shaft (1) is a nested end; a power output shaft oil inlet channel (11) and a power output shaft oil outlet channel (12) are formed in the power output shaft (1) from one end to the other end along the axis, a power output shaft oil inlet manifold and a power output shaft oil outlet manifold are correspondingly formed between the power output shaft oil inlet channel (11) and the power output shaft oil outlet channel (12), and the power output shaft oil inlet manifold and the power output shaft oil outlet manifold are radially formed corresponding to different cross sections of the power output shaft (1) and are communicated with a power output shaft first piston (3) and a power output shaft second piston (4);
the other end of the power output shaft (1) is embedded into a nested shaft hole (21) of the nested shaft (2) concentric with the power output shaft, and the nested shaft hole (21) extends outwards; the shaft shoulder (13) is matched with the end face of the nested shaft hole (21); a first piston (5) of the nested shaft and a second piston (6) of the nested shaft are oppositely arranged on the side, close to the shaft shoulder (13), of the nested shaft (2); the nested shaft (2) is provided with a nested shaft oil inlet channel (25) and a nested shaft oil outlet channel (24) along the direction parallel to the axis, and the nested shaft (2) is provided with a nested shaft oil inlet manifold and a nested shaft oil outlet manifold which are communicated with the first piston (5) and the second piston (6) of the nested shaft in different cross section directions;
the oil inlet and outlet bushing comprises an oil inlet bushing (8) and an oil outlet bushing (7), wherein the outer wall, far away from the side of the first piston (5) and the second piston (6) of the nested shaft, of the nested shaft (2) is provided with an oil inlet ring groove (22) of the nested shaft and an oil outlet ring groove (23) of the nested shaft, the oil inlet ring groove (22) of the nested shaft and the oil outlet ring groove (23) of the nested shaft are in one-to-one correspondence with the oil inlet bushing (8) and the oil outlet bushing (7), and a main oil inlet channel of the nested shaft and a main oil outlet channel of the nested shaft are formed.
2. The shafting cooling system of the engine rotary opposed piston according to claim 1, characterized in that the first piston (3) of the power output shaft and the second piston (4) of the power output shaft are identical in structure, the bottom of the first piston (3) of the power output shaft is provided with a first piston pin (31) of the power output shaft, the first piston pin (31) of the power output shaft is matched with a first piston pin groove (141) of the power output shaft arranged on a piston mounting section of the power output shaft (1), and the second piston pin of the power output shaft at the bottom of the second piston (4) of the power output shaft is matched with a second piston pin groove (142) of the power output shaft arranged on a piston mounting section of the power output shaft (1);
the first piston (5) of the nested shaft and the second piston (6) of the nested shaft have the same structure, the bottom of the first piston (5) of the nested shaft is provided with a first piston pin (51) of the nested shaft, and the first piston pin slot (261) of the nested shaft is matched with the first piston pin slot (261) of the nested shaft, which is arranged on the side of the nested shaft (2) close to the shaft shoulder (13); the second piston pin of the nested shaft is matched with a second piston pin groove (262) of the nested shaft, which is arranged on the side of the nested shaft (2) close to the shaft shoulder (13).
3. The shafting cooling system of an engine rotary opposed piston according to claim 1, characterized in that the inner diameter of the oil inlet oil bushing (8) is the same as the outer diameter of the nested shaft (2) and is in concentric transition fit, the oil inlet oil bushing (8) is provided with an oil inlet hole (82) and an oil inlet groove (81), and the oil inlet groove (81) and the nested shaft oil inlet ring groove (22) form a nested shaft oil inlet main channel;
the inner diameter of the oil outlet oil bushing (7) is the same as the outer diameter of the nested shaft and is in concentric transition fit, the oil outlet bushing (7) is provided with an oil outlet hole (72) and an oil outlet groove (71), and the oil outlet groove (71) and the nested shaft oil outlet ring groove (23) form a nested shaft oil outlet main channel.
4. The shafting cooling system of an engine rotary opposed piston according to claim 1, characterized in that the power output shaft oil inlet manifold and the power output shaft oil outlet manifold are linear passages and are located in different sections of the power output shaft (1); the oil inlet manifold of the nested shaft and the oil outlet manifold of the nested shaft are arc-shaped channels and are positioned on different sections of the nested shaft (2).
5. A shafting cooling system for an engine rotating opposed piston in accordance with claim 2, wherein the internal oil passages of the power output shaft first piston (3) and the power output shaft second piston (4) each comprise: a first piston oil inlet hole (32) and a first piston oil outlet hole (36) are formed in the bottom of the first piston (3) of the power output shaft, one end of the first piston oil inlet hole (32) is communicated with the first power output shaft oil inlet manifold, and the other end of the first piston oil inlet hole is communicated with the first piston end face oil inlet duct (33); one end of a first piston oil outlet hole (36) is communicated with a first piston end face oil outlet channel (35), and the other end of the first piston oil outlet hole is communicated with the power output shaft oil outlet manifold; the first piston end face oil inlet channel (33) is communicated with the first piston end face oil outlet channel (35) through a plurality of first piston circumferential oil channels (34).
6. A shafting cooling system for an engine rotating opposed piston in accordance with claim 2, wherein the inner oil passages of the nested shaft first piston (5) and nested shaft second piston (6) each comprise: a second piston oil inlet hole (52) and a second piston oil outlet hole (56) are formed in the bottom of the first piston (5) of the nested shaft, one end of the second piston oil inlet hole (52) is communicated with the first nested shaft oil inlet manifold, and the other end of the second piston oil inlet hole is communicated with the second piston end face oil inlet passage (53); one end of a second piston oil outlet hole (56) is communicated with a second piston end surface oil outlet channel (55), and the other end of the second piston oil outlet hole is communicated with a nested shaft oil outlet manifold; the second piston end face oil inlet channel (53) is communicated with the second piston end face oil outlet channel (55) through a plurality of second piston circumferences Xiang Youdao (54).
7. An engine having a rotary opposed piston shafting cooling system comprising an engine block and an engine rotary opposed piston shafting cooling system as claimed in any one of claims 1 to 6 in cooperation with the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311235460.8A CN117266982A (en) | 2023-09-25 | 2023-09-25 | Shafting cooling system of engine rotary opposed pistons and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311235460.8A CN117266982A (en) | 2023-09-25 | 2023-09-25 | Shafting cooling system of engine rotary opposed pistons and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117266982A true CN117266982A (en) | 2023-12-22 |
Family
ID=89202142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311235460.8A Pending CN117266982A (en) | 2023-09-25 | 2023-09-25 | Shafting cooling system of engine rotary opposed pistons and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117266982A (en) |
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2023
- 2023-09-25 CN CN202311235460.8A patent/CN117266982A/en active Pending
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