CN201582004U - Two-stroke crankshaft circular sliding block internal combustion engine body and internal combustion engine thereof - Google Patents
Two-stroke crankshaft circular sliding block internal combustion engine body and internal combustion engine thereof Download PDFInfo
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- CN201582004U CN201582004U CN2009202471507U CN200920247150U CN201582004U CN 201582004 U CN201582004 U CN 201582004U CN 2009202471507 U CN2009202471507 U CN 2009202471507U CN 200920247150 U CN200920247150 U CN 200920247150U CN 201582004 U CN201582004 U CN 201582004U
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Abstract
The utility model discloses a two-stroke crankshaft circular sliding block internal combustion engine body , which comprises an exhaust passage and an air intake passage; the exhaust passage is formed on the engine body and communicated with an air cylinder; the air intake passage is communicated with crankshaft accommodating space below the air cylinder; two opposite through holes which are served as crankshaft bearing seat holes are also formed on the engine body; a central connecting line of two crankshaft bearing seat holes penetrates the crankshaft accommodating space, and is perpendicular to a central axis of the air cylinder; wherein an opening of the exhaust passage on the inner side of the cylinder wall of the air cylinder is served as an exhaust opening; at least one strengthening rib is also arranged at the exhaust opening along the moving direction of a piston, which is mounted in the air cylinder; and the exhaust opening is divided into at least two subsidiary air exhausts through the strengthening rib. The internal combustion engine body provided by the utility model has higher intensity and rigidity. The utility model also provides a two-stroke crankshaft circular sliding block internal combustion engine.
Description
Technical field
The utility model relates to crank circular slider internal-combustion engine, is specifically related to a kind of double-stroke crank round slider internal combustion engine body.The utility model also relates to a kind of crank circular slider internal-combustion engine simultaneously.
Background technique
In traditional internal-combustion engine and compressor, realize conversion between the rotatablely moving of the to-and-fro motion of piston and bent axle by connecting rod.Yet defectives such as in described connecting rod, because the existence of connecting rod, that the internal-combustion engine of connecting rod and compressor have is bulky, heavy, balance quality difference.
For addressing the above problem, the authorization day for announcing is that the Chinese patent that January 13, notification number in 1988 are CN85200358B discloses a kind of " crankshaft circular slide block reciprocating piston internal combustion engine ".Notice of authorization day is June 27 calendar year 2001, notice of authorization number to disclose a kind of " crank and double-round slide reciprocating piston internal combustion engine " for the Chinese patent of CN1067741C.Notice of authorization day is June 27 calendar year 2001, notice of authorization number to disclose a kind of " crank and multi-round slide reciprocating piston internal combustion engine " for the Chinese patent of CN1067742C.
The disclosed internal-combustion engine common feature of above-mentioned Chinese patent is in wherein to-and-fro motion and the switching mechanism that rotatablely moves, to have replaced connecting rod with circular slider-crank mechanism.Smooth block in the circular slider-crank mechanism is provided with eccentric circular hole.The piston seat of piston is provided with circular slider accommodation hole.During assembling, smooth block is placed described circular slider accommodation hole, smooth block can rotate in described circular slider accommodation hole; The crank pin of bent axle is assemblied in the described eccentric circular hole, and crank pin can rotate in described eccentric circular hole.
During work, combustion gas in the firing chamber expand and promote piston motion, driving the smooth block that is arranged at wherein by piston moves reciprocatingly, and smooth block rotates in described piston simultaneously, and described to-and-fro motion rotates around the central axis of bent axle with the synthetic central axis of the eccentric circular hole on the smooth block that makes that rotatablely moves; And the dead in line of the crank pin of the central axis of described eccentric circular hole and bent axle, thereby can realize the conversion that rotatablely moves that reciprocates to bent axle of piston.
In internal-combustion engine, two stroke IC engine has under the equal discharge capacity that power is big, simple in structure, advantage such as cost is low.Comprise two strokes in a work cycle of two stroke IC engine, at first stroke, piston moves up from lower dead center, will pour mixed gas compression in the cylinder of piston top in advance, and in compression process, the relief opening that is arranged on the cylinder wall is blocked; When piston moves near top dead center or arrives top dead center, air inlet open, new mixed gas is inhaled in the crankcase of piston below.At second stroke, the piston arrives atdc, pressurized gas is lighted outburst, to the piston acting, promotes piston and moves to lower dead center from top dead center, opens relief opening simultaneously, and the waste gas of piston top is discharged.
Above-mentioned circular slider-crank mechanism also can be assemblied in the two stroke IC engine body, forms with traditional two stroke IC engine to have the identical intake and exhaust and the double-stroke crank round slider internal combustion engine of working method.
Yet, owing in stroke IC engine, relief opening is set, can influence the rigidity and the intensity of cylinder at cylinder inner wall, when serious, can cause cylinder deformation, influence the cylinder proper functioning.
The model utility content
The utility model provides a kind of double-stroke crank round slider internal combustion engine body, and internal combustion (IC) engine airframe of the present utility model has higher strength and stiffness.The utility model also provides a kind of double-stroke crank round slider internal combustion engine.
A kind of double-stroke crank round slider internal combustion engine body that the utility model provides comprises exhaust passage that is communicated with cylinder that is arranged on the body and the gas-entered passageway that is communicated with the bent axle holding space of cylinder below; Also be provided with two relative through holes on described body, be called the crankshaft bearing seat hole, the line of centres in described two crankshaft bearing seat holes passes described bent axle holding space, and perpendicular with the central axis of described cylinder; Wherein, described exhaust passage is called relief opening at the opening of the cylinder wall inboard of described cylinder; Also be provided with at least one stiffening rib in described exhaust ports along the moving direction that is installed on the piston in the cylinder, described stiffening rib is divided at least two sub-gas ports with described relief opening.
Preferably, when described stiffening rib is arranged so that at the number of described exhaust ports, position and along the circumferential size of cylinder piston moves in cylinder, when being installed in piston ring on the piston and rotating with respect to its annular groove, the piston ring end can not snap in the described relief opening.
Preferably, described each sub-gas port is less than or equal to 16 degree at the central angle of the circumferential overall dimensions place correspondence of described cylinder.
Preferably, described stiffening rib is at the thickness of cylinder size radially less than the cylinder wall of described cylinder.
Optionally, described relief opening is circular oval or square or other polygonal.
Optionally, described relief opening is at least two, and along described cylinder circumferential array.
Preferably, also be provided with the guide portion that is used for the piston guide of crank circular slider internal-combustion engine on described body, described guide portion is arranged at a side relative with cylinder wall cylinder the bent axle holding space.
In addition, the utility model also provides a kind of double-stroke crank round slider internal combustion engine, comprises the described internal combustion (IC) engine airframe of above-mentioned arbitrary technological scheme.
Compared with prior art, in the technical solution of the utility model, have along the stiffening rib that is installed on the moving direction of the piston in the cylinder, can improve cylinder wall and strength of machine body and rigidity in the body exhaust ports, avoid cylinder deformation, thereby guarantee the proper functioning of internal-combustion engine.
In preferred version of the present utility model, described stiffening rib also is the thickness of the thickness of stiffening rib less than the cylinder wall of described cylinder in cylinder size radially.The thickness of the thickness of stiffening rib less than cylinder wall is set, under the prerequisite that guarantees the cylinder wall strength and stiffness, can reduces the weight of whole machine body, and save the material of making cylinder body.
In preferred version of the present utility model, the position and the circumferential size size of the stiffening rib by exhaust ports is set make the sub-gas port of relief opening circumferentially have rational size along cylinder, can avoid piston ring to snap in the sub-gas port; And the piston ring locating stud needn't be set on piston again, and can simplify piston ring technology is set, reduce component, improve the reliability of system; And in this enforcement, piston ring can be fixed without locating stud, and piston ring can also rotate along annular groove, can avoid or reduce the problem that piston ring blocks because of carbon distribution.
In preferred version of the present utility model, on described body, also be provided with the guide portion that is used for the piston guide of crank circular slider internal-combustion engine, described guide portion is arranged at a side relative with cylinder wall cylinder the bent axle holding space, and integrally formed with the sidewall of described bent axle holding space; Also promptly, described guide portion is equivalent to the extension downwards of bent axle holding space sidewall and forms, and the inwall of the two can seamlessly transit; Because on the piston of crank circular slider internal-combustion engine, the guiding side plate can be set on its piston seat, and the stroke of piston is not limited in the cylinder in traditional internal-combustion engine, thereby, described guide portion can be used for cooperating with the guiding side plate of piston seat, leads when reciprocating motion of the pistons.
Description of drawings
Fig. 1 is the embodiment's of a double-stroke crank round slider internal combustion engine body of the present utility model shaft side figure.
Embodiment
Below in conjunction with accompanying drawing double-stroke crank round slider internal combustion engine body of the present utility model is elaborated.
Fig. 1 is the embodiment's of a double-stroke crank round slider internal combustion engine body of the present utility model shaft side figure.
Please refer to Fig. 1, among the embodiment of the present utility model, double-stroke crank round slider internal combustion engine body 1 is integrally formed with cylinder head (not indicating), also is provided with the radiating fin 2 of some pectinations on cylinder head.Wherein radiating fin and cylinder head also are integrally formed.Certainly, described cylinder head and body 1 also can adopt split-type structural, and described radiating fin 2 also can have other shape.
Embodiment's of the present utility model double-stroke crank round slider internal combustion engine body 1 has columnar sidewall, and the space that the inner side surface of described sidewall surrounds constitutes the cylinder of this internal-combustion engine near the area of space of a side of cylinder head.Piston can place this cylinder, constitutes sliding pair with described cylinder.
Be the bent axle holding space below described cylinder, described bent axle holding space is used for the bent axle of ccontaining crank circular slider internal-combustion engine.
On described body 1, be provided with two relative through hole 5a and 5b, be called crankshaft bearing seat hole 5a and 5b with the corresponding position of bent axle holding space.The line at the center of described crankshaft bearing seat hole 5a and 5b passes described bent axle holding space, and perpendicular with the center of described cylinder.When built-up crankshaft, an end of bent axle can be inserted from one of them crankshaft bearing seat hole, pass the bent axle holding space after, from one in addition the crankshaft bearing seat hole stretch out, bent axle just can place described bent axle holding space.
On described body 1, also be provided with exhaust passage 3 that is communicated with described cylinder and the gas-entered passageway (not shown in figure 1) that is communicated with described bent axle holding space.
And cylinder block general with crankcase in the traditional internal-combustion engine (being the bent axle holding space in the crankcase) is that separation structure is different, sidewall at embodiment's of the present utility model bent axle holding space can be integrally formed with the cylinder wall of cylinder, be equivalent to extend downwards and form by cylinder wall, can be between the inwall of bent axle holding space and the described cylinder wall for seamlessly transitting.And, because the balance weight structure in the utility model embodiment's the two-stroke bent axle smooth block internal-combustion engine needn't be arranged in the crankcase as traditional internal-combustion engine, but can be arranged at outside crankcase, thereby, embodiment's of the present utility model bent axle holding space volume can be more traditional little, the exterior contour of bent axle holding space sidewall also can dwindle accordingly, makes this internal combustion (IC) engine airframe overall volume reduce weight saving.And in embodiment of the present utility model, for seamlessly transitting, the sidewall of bent axle holding space can also have the leading role to piston between the inwall of bent axle holding space and the described cylinder.
Please continue with reference to figure 1, the opening of described exhaust passage 3 in the inboard of described cylinder wall is called relief opening.The shape of described relief opening can be circular, also can be oval, and can also be square or other polygonal.It also can be more than one that described relief opening can be one.During more than one, described relief opening is along the circumferential array of described cylinder at described relief opening.Certainly, described relief opening can also have other shape and arrangement mode, describes no longer one by one here.
In embodiment of the present utility model, also be provided with at least one stiffening rib 4 along the moving direction that is installed on the piston in the cylinder in described exhaust ports.As shown in Figure 1, in the present embodiment, described stiffening rib is three.Described stiffening rib 4 is divided into four sub-gas ports with described relief opening 3.
Because described relief opening 3 is arranged on the inwall of described cylinder, can cause cylinder wall and strength of machine body and rigidity to descend.At described relief opening 3 places described stiffening rib 4 is set and improves cylinder wall and strength of machine body and rigidity, avoid cylinder deformation, thereby guarantee the proper functioning of internal-combustion engine.
In addition, in embodiment of the present utility model, described stiffening rib 4 also is the thickness of the thickness of stiffening rib 4 less than the cylinder wall of described cylinder in cylinder size radially.The thickness of the thickness of stiffening rib 4 less than cylinder wall is set, under the prerequisite that guarantees the cylinder wall strength and stiffness, can reduces the weight of whole machine body, and save the material of making cylinder body.
In addition, the number of described stiffening rib is not limited to above-mentioned three, described stiffening rib can be set at the number at described relief opening 3 places, position and along the circumferential size of cylinder, when the feasible piston that is installed in the cylinder moves reciprocatingly in cylinder, be installed on piston ring on the piston when rotating with respect to its annular groove, the piston ring end can not snap in described relief opening 3 or its sub-gas port.
In internal-combustion engine, the side operated by rotary motion of the head of piston has several along circumferential annular groove, and described annular groove is used to install compression ring and oil ring, and the kind difference according to the ring of installing is called compression ring annular groove and oil ring groove.Generally speaking, annular groove is three, is the compression ring annular groove near two annular grooves of piston head, oil ring groove be positioned at the compression ring annular groove below.Wherein, in the compression ring annular groove compression ring is set, effect mainly is sealing, avoids the high-temperature high-pressure fuel gas in the cylinder to enter crankcase.And oil ring is set in the oil ring groove, effect mainly is to strike off machine oil unnecessary on the cylinder wall, prevents that machine oil from entering the firing chamber.
Compression ring and oil ring are referred to as piston ring, and its shape is generally the have breach annulus of (or being called otch), and its outer circumference diameter is bigger than the internal diameter of cylinder, like this after it is with installing piston into cylinder, just produces elastic force and are close on the cylinder wall.Described otch is on the one hand for making things convenient for compression ring with installing piston into cylinder; On the other hand because the environment of pistons work is in the condition of high temperature, the otch on the piston ring can also be avoided the piston ring expanded by heating and stuck or fracture.
Produce elastic force behind the cylinder it is close on the cylinder wall owing to piston ring is pressed into, piston ring end (because of otch produces) also is close to cylinder wall.When piston in cylinder during to-and-fro motion, piston ring inevitably can rotate along its annular groove.In two stroke internal-combustion engine, because cylinder wall is provided with opening (relief opening), when the piston ring otch turned to the relief opening position, the end of piston ring can snap in the relief opening, and this can cause stuck piston or piston ring to fracture.Thereby, for avoiding above-mentioned situation, in piston ring groove, generally locating stud can be set, be called the piston ring locating stud; Snap in piston ring with the piston ring locating stud, avoid piston ring to rotate.
In embodiment of the present utility model, the position and the circumferential size size of the stiffening rib 4 by relief opening 3 places are set make sub-gas port circumferentially have rational size along cylinder, can avoid piston ring to snap in the sub-gas port.And the piston ring locating stud needn't be set on piston again, and can simplify piston ring technology is set, reduce component, improve the reliability of system.And in this enforcement, piston ring can be fixed by locating stud, and piston ring can also rotate along annular groove, can avoid or reduce the problem that piston ring blocks because of carbon distribution.
In the present embodiment, described each sub-gas port is less than or equal to 16 degree at the pairing central angle of described circumferential overall dimensions, can effectively avoid piston ring to snap in the problem of relief opening or its sub-gas port.
In embodiment of the present utility model, on described body 1, also be provided with the guide portion 6 that is used for the piston guide of crank circular slider internal-combustion engine, as shown in Figure 1, described guide portion 6 is arranged at a side relative with cylinder wall cylinder the bent axle holding space, and integrally formed with the sidewall of described bent axle holding space.Also promptly, described guide portion 6 is equivalent to the extension downwards of bent axle holding space sidewall and forms, and the inwall of the two can seamlessly transit.Because on the piston of crank circular slider internal-combustion engine, the guiding side plate can be set on its piston seat, and the stroke of piston is not limited in the cylinder in traditional internal-combustion engine, thereby, described guide portion 6 is used for cooperating with the guiding side plate of piston seat, leads when reciprocating motion of the pistons.
In addition, for the internal-combustion engine that comprises two-way ram, have the two ends that two cylinders lay respectively at the bent axle holding space, on the cylinder wall of two cylinders, relief opening can be set all.All can stiffening rib be set in the mode of the above embodiments on each relief opening, those skilled in the art can make corresponding change according to instruction of the present utility model, repeat no more here.The technological scheme that any exhaust ports at the two stroke IC engine body is provided with stiffening rib all should be included within the protection domain of the present utility model.
The body of the above embodiments can be applicable in the double-stroke crank round slider internal combustion engine.
Though the utility model with preferred embodiment openly as above; but it is not to be used for limiting the utility model; any those skilled in the art are not in breaking away from spirit and scope of the present utility model; can make possible change and modification, therefore protection domain of the present utility model should be as the criterion with the scope that the utility model claim is defined.
Claims (7)
1. a double-stroke crank round slider internal combustion engine body comprises exhaust passage that is communicated with cylinder that is arranged on the body and the gas-entered passageway that is communicated with the bent axle holding space of cylinder below; Also be provided with two relative through holes on described body, be called the crankshaft bearing seat hole, the line of centres in described two crankshaft bearing seat holes passes described bent axle holding space, and perpendicular with the central axis of described cylinder; It is characterized in that: described exhaust passage is called relief opening at the opening of the cylinder wall inboard of described cylinder; Also be provided with at least one stiffening rib in described exhaust ports along the moving direction that is installed on the piston in the cylinder, described stiffening rib is divided at least two sub-gas ports with described relief opening.
2. double-stroke crank round slider internal combustion engine body as claimed in claim 1 is characterized in that: described each sub-gas port is less than or equal to 16 degree at the central angle of the circumferential overall dimensions place correspondence of described cylinder.
3. as the described double-stroke crank round slider internal combustion engine body of the arbitrary claim of claim 1 to 2, it is characterized in that: described stiffening rib is at the thickness of cylinder size radially less than the cylinder wall of described cylinder.
4. as the described double-stroke crank round slider internal combustion engine body of the arbitrary claim of claim 1 to 2, it is characterized in that: described relief opening is circular oval or square or other polygonal.
5. double-stroke crank round slider internal combustion engine body as claimed in claim 4 is characterized in that: described relief opening is at least two, and along described cylinder circumferential array.
6. as the described double-stroke crank round slider internal combustion engine body of the arbitrary claim of claim 1 to 2, it is characterized in that: also be provided with the guide portion that is used for the piston guide of crank circular slider internal-combustion engine on described body, described guide portion is arranged at a side relative with cylinder wall cylinder the bent axle holding space.
7. a double-stroke crank round slider internal combustion engine is characterized in that: comprise that aforesaid right requirement 1 is to the arbitrary described internal combustion (IC) engine airframe of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202471507U CN201582004U (en) | 2009-11-19 | 2009-11-19 | Two-stroke crankshaft circular sliding block internal combustion engine body and internal combustion engine thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202471507U CN201582004U (en) | 2009-11-19 | 2009-11-19 | Two-stroke crankshaft circular sliding block internal combustion engine body and internal combustion engine thereof |
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| Publication Number | Publication Date |
|---|---|
| CN201582004U true CN201582004U (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202471507U Expired - Lifetime CN201582004U (en) | 2009-11-19 | 2009-11-19 | Two-stroke crankshaft circular sliding block internal combustion engine body and internal combustion engine thereof |
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| CN (1) | CN201582004U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072038A (en) * | 2010-12-06 | 2011-05-25 | 北京中清能发动机技术有限公司 | Machine body, and compressor and internal combustion engine using same |
| CN102072037A (en) * | 2010-12-06 | 2011-05-25 | 北京中清能发动机技术有限公司 | Engine body, and compressor and internal combustion engine using same |
-
2009
- 2009-11-19 CN CN2009202471507U patent/CN201582004U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072038A (en) * | 2010-12-06 | 2011-05-25 | 北京中清能发动机技术有限公司 | Machine body, and compressor and internal combustion engine using same |
| CN102072037A (en) * | 2010-12-06 | 2011-05-25 | 北京中清能发动机技术有限公司 | Engine body, and compressor and internal combustion engine using same |
| CN102072037B (en) * | 2010-12-06 | 2012-08-22 | 北京中清能发动机技术有限公司 | Engine body, and compressor and internal combustion engine using same |
| CN102072038B (en) * | 2010-12-06 | 2012-11-21 | 北京中清能发动机技术有限公司 | Machine body, and compressor and internal combustion engine using same |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100915 |
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| CX01 | Expiry of patent term |