CN1114029C - Cylinder and gearing device for internal combustion engine - Google Patents
Cylinder and gearing device for internal combustion engine Download PDFInfo
- Publication number
- CN1114029C CN1114029C CN99117840A CN99117840A CN1114029C CN 1114029 C CN1114029 C CN 1114029C CN 99117840 A CN99117840 A CN 99117840A CN 99117840 A CN99117840 A CN 99117840A CN 1114029 C CN1114029 C CN 1114029C
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- cylinder
- piston
- combustion engine
- connecting rod
- length
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to a cylinder of an internal combustion engine and a drive device, which comprises an upper and a lower connecting rods and a guide rocking rod. The ratio of the piston stroke and the inner diameter of the cylinder is enlarged. Under the condition of not changing the total displacement of a cylinder piston, the inner diameter of the cylinder is decreased, and the piston stroke is increased. If the inner diameter of the cylinder is unchanged, the total displacement of the piston is increased, the length of the cylinder is enlarged, the piston stroke is increased, and the effective length of a crank is enlarged. The connection position of the upper and the lower connecting rods is positioned beyond the cylinder, and two end holes of the guide rocking rod are positioned at both sides of the shaft line of the upper connecting rod. The present invention has the advantages that the fuel combustion process can be prolonged, the frictional force for a crankshaft is decreased, the movement of the connecting rods is stable, and the total thermal efficiency of internal combustion engine is improved.
Description
Technical field the present invention relates to transmission devices such as the cylinder of internal-combustion engine and connecting rod, crank.
The length of piston travel and the internal diameter size of the existing cylinder of internal-combustion engine of background technique are more or less the same, and piston stroke is short in the cylinder, causes crank also shorter thus.And in fact, because guarantee anti-impact force, wear resistance and the requirement of strength of axle journal and bent axle, so in reality is made, axle journal and bent axle all will guarantee enough sizes, make that so just the effective length of crank is shorter, just make that also the power arm that drives the bent axle rotation is shorter than calculated value.In addition, the internal diameter size of cylinder is too small, and for existing single connecting rod transmission, the collision problem of connecting rod and cylinder inner wall then is a difficult problem.
On the Chinese patent communique, notification number is to disclose two kinds of transmission devices of being made up of upper and lower strut and rocking bar in the bulletin of CN2233462 and CN2302342, its objective is in order to form effective angle in advance.But length proportionate relationship and Placement between its shape, three connecting rods have nothing in common with each other.
Summary of the invention the objective of the invention is to change the internal diameter size of cylinder of internal-combustion engine and the ratio of length of piston travel, and the structure of transmission devices such as connecting rod, crank, to improve the overall thermal efficiency of internal-combustion engine.
The present invention realizes by following approach.
The ratio of oversize piston stroke and cylinder bore diameter.Under the constant situation of internal combustion engine piston gross exhaust gas, reduce the cylinder bore diameter size, increase piston stroke, to add the length of big crank, promptly increase the length of the power arm of piston impulse force.Because gross exhaust gas is constant, the no longer overstriking of axle journal, bent axle, increasing are so the actual value added of crank effective length is bigger than theoretical calculation value added.In addition, the relative value of the frictional loss of crankshaft two end is also little.So, can improve the thermal efficiency of internal-combustion engine effectively.In general, under the constant situation of piston displacement, can be piston stroke lengthening more than 1 times on original basis, preferably 0.2～1 times.Also can increase the cylinder piston gross exhaust gas under the constant situation of cylinder bore diameter, the length of intensifying cylinder is to increase piston stroke.
The present invention will be called connecting rod 5 with the connecting rod that piston directly links to each other, and the connecting rod that links to each other with axle journal 11 is called lower link 7, and the connecting rod that the last connecting rod of minimizing is waved is called guiding rocking bar 9.Three connecting rods Placement each other is: go up connecting rod and be connected with lower link by connecting pin 6, lower link is connected with axle journal, and guiding rocking bar one end is connected with last connecting rod by connecting pin 8, and the other end is connected with body by connecting pin 10.Three connecting rods size relationship each other is: the length setting of going up connecting rod is to make piston when top dead center, the connection part of upper and lower strut is in outside the cylinder, preferably be in the edge of cylinder, last connecting rod is equivalent to the prolongation of piston, the length of lower link preferably is chosen to be its two stomidiums line of centres length and approximates the piston stroke size, and the length of guiding rocking bar is preferably elected its two stomidiums line of centres length as and is a bit larger tham the piston stroke size.Upper and lower connecting rod, guiding rocking bar joint form a little triangle space.
Guiding rocking bar two stomidium offices like this, increase under the little situation at the internal combustion (IC) engine airframe volume in last connecting rod axis both sides, can make the guiding rocking bar that enough length is arranged, and guarantee to go up connecting rod when moving up and down, and the amplitude of oscillation of bar is as far as possible little.That end that the guiding rocking bar is connected with connecting pin 10 can be made spade shape, swings to both sides to reduce it.The hollow groove that the guiding rocking bar can pass lower link is connected with last connecting rod.The guiding rocking bar can be definite like this in the fixed position of internal combustion (IC) engine airframe end: when piston was gone up some positions slightly in cylinder stroke stage casing, the line of centres of rocking bar two stomidiums and last connecting rod longitudinal axis were about 90 ° of angles, at this moment, and the swing maximum of last connecting rod.
The internal-combustion engine less, cylinder bore to air displacement change little after, if the not enough position of arranging two valves of cylinder head can be made reverse frustoconic to cylinder head, the axis of small circle of round platform equates to get final product with cylinder bore.
In order to prevent the collision in the motion between connecting rod, the rocking bar, rocking bar can be made decurved arc, and lower link can be made the upwards arc of the opposite lateral bending with rocking bar connecting direction of connecting rod.Concrete shape is seen accompanying drawing.In addition, the middle sky of two cranks can be done wideer, can design two round iron sheets, with the equilibrium block flush, bumps against so that linkage connector in the passageway, prevents connecting rod and equilibrium block.
The present invention is by the setting of two connecting rods up and down, prolonged fuel combustion process, reduced the normal component of force (frictional force) of connecting rod to bent axle, setting by the guiding rocking bar, improved the stability of link motion, and the lengthening of cylinder piston stroke, make the actual increase length of crank bigger, thereby the overall thermal efficiency of internal-combustion engine is significantly improved than theoretical calculation value added.
Appended drawings is embodiment's schematic representation.1 is the cylinder taper mouth, and 2 is cylinder, and 3 is piston and last connecting rod connecting pin, 4 is piston, 5 is last connecting rod, and 6 is the connecting pin of last connecting rod and lower link, and 7 is lower link, 8 is the connecting pin of last connecting rod and guiding rocking bar 9,9 are the guiding rocking bar, and 10 are the connecting pin of guiding rocking bar 9 with internal combustion (IC) engine airframe, and 11 is axle journal, 12 is crank, and 13 is bent axle.
Embodiment the present invention will be described further by following examples
Embodiment: accompanying drawing is the schematic representation of the embodiment of the invention.The internal diameter of cylinder 2 changes 67.2 millimeters into by original 95 millimeters, piston 4 strokes were 115 millimeters originally, extend one times and then be 230 millimeters, adding 13 millimeters of the space lengths and piston 4 length of depositing air after the compression is 60 millimeters, then cylinder 2 length overalls are 303 millimeters, 5 liang of stomidium lines of centres of last connecting rod length is 268 millimeters, it is connected with piston 4 by wrist pin 3,7 liang of stomidium lines of centres of lower link length is 235 millimeters, be connected with last connecting rod 5 by connecting pin 6, the other end is connected with axle journal 11, and lower link 7 is curved to the right, and the line length at 9 liang of stomidium centers of guiding rocking bar is 250 millimeters, one end is connected with last connecting rod 5 by connecting pin 8, the other end is connected with internal combustion (IC) engine airframe by connecting pin 10, and guiding rocking bar 9 is curved downwards, and the line length of journal centre and crankshaft center is 115 millimeters.Present embodiment is in the whole stroke of piston, and the gap of last connecting rod and cylinder inner wall hour is about 10 millimeters, can not collide with cylinder inner wall.
Claims (4)
1, a kind of cylinder of internal-combustion engine and transmission device, by cylinder, three connecting rods are formed, it is characterized in that under the constant situation of piston displacement, the ratio of oversize piston stroke and cylinder bore diameter and the length of crank, the length of last connecting rod makes piston when top dead center, on, the connection part of lower link is in outside the cylinder, lower link is curved to the right, two stomidium line of centres length approximate the piston stroke size, the guiding rocking bar is decurved arc, two stomidium line of centres length are a bit larger tham the piston stroke size, its fixed position is when piston is gone up some positions slightly in cylinder stroke stage casing, the line of centres and the last connecting rod longitudinal axis of guiding rocking bar two stomidiums are about 90 ° of angles, on, lower link, guiding rocking bar joint forms a little triangle space.
2, cylinder of internal-combustion engine according to claim 1 and transmission device is characterized in that under the constant situation of piston displacement, 0.2～1 times of cylinder lengthening.
3, cylinder of internal-combustion engine according to claim 1 and transmission device, the hollow groove that the rocking bar that it is characterized in that leading passes lower link is connected with last connecting rod.
4, cylinder of internal-combustion engine according to claim 1 and transmission device is characterized in that cylinder head is made reverse frustoconic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117840A CN1114029C (en) | 1999-08-23 | 1999-08-23 | Cylinder and gearing device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117840A CN1114029C (en) | 1999-08-23 | 1999-08-23 | Cylinder and gearing device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1285460A CN1285460A (en) | 2001-02-28 |
| CN1114029C true CN1114029C (en) | 2003-07-09 |
Family
ID=5280295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99117840A Expired - Fee Related CN1114029C (en) | 1999-08-23 | 1999-08-23 | Cylinder and gearing device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1114029C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009033249B3 (en) | 2009-07-14 | 2011-01-20 | Konrad Heimanns | crankshaft |
| EP3040535B1 (en) * | 2013-08-27 | 2019-02-20 | Nissan Motor Co., Ltd | Multi-link piston-crank mechanism for internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3908623A (en) * | 1974-08-23 | 1975-09-30 | Edward M Mcwhorter | Advanced reciprocating engine system |
| CN2302342Y (en) * | 1997-07-09 | 1998-12-30 | 李寿生 | Swing three-section linkage rod apparatus for internal combustion engine |
| CN1206789A (en) * | 1997-10-30 | 1999-02-03 | 王长征 | Contact-point explosion type internal combustion engine |
-
1999
- 1999-08-23 CN CN99117840A patent/CN1114029C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3908623A (en) * | 1974-08-23 | 1975-09-30 | Edward M Mcwhorter | Advanced reciprocating engine system |
| CN2302342Y (en) * | 1997-07-09 | 1998-12-30 | 李寿生 | Swing three-section linkage rod apparatus for internal combustion engine |
| CN1206789A (en) * | 1997-10-30 | 1999-02-03 | 王长征 | Contact-point explosion type internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285460A (en) | 2001-02-28 |
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