CN101709675A - Compression ratio adjustable transmission mechanism of internal combustion engine and adjusting method - Google Patents
Compression ratio adjustable transmission mechanism of internal combustion engine and adjusting method Download PDFInfo
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- CN101709675A CN101709675A CN200910073440A CN200910073440A CN101709675A CN 101709675 A CN101709675 A CN 101709675A CN 200910073440 A CN200910073440 A CN 200910073440A CN 200910073440 A CN200910073440 A CN 200910073440A CN 101709675 A CN101709675 A CN 101709675A
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Abstract
The invention provides a compression ratio adjustable transmission mechanism of an internal combustion engine and an adjusting method. The transmission mechanism comprises a piston, a connecting rod, a balance weight, a crankshaft, an internal gear, an external gear, an eccentric shaft and a crank bearing bush, wherein the piston is connected with the connecting rod and does reciprocating linear motion in a cylinder, the large end of the connecting rod is connected with the eccentric shaft, the eccentric shaft and the internal gear are fixed relatively, the internal gear and the crank bearing bush are connected with a crank of the crankshaft, the crankshaft is arranged on an engine body, the internal gear is engaged with the external gear, the external gear is concentric with the crankshaft and can rotate around the axis, and the balance weight is arranged on the crankshaft. The transmission mechanism and the adjusting method ensure that the piston dynamically adjusts the compression ratio in the operational process of the piston from the mechanical transmission mechanism, and realizes minimized modification for the conventional internal-combustion engine without changing the original system.
Description
Technical field
What the present invention relates to is a kind of driving mechanism, particularly a kind of driving mechanism with the variable compression ratio internal combustion engine that changes the compression ratio function.The present invention also relates to a kind of regulating method of compression ratio of internal-combustion engine.
Background technique
Advocate again under the overall situation of energy-conserving and environment-protective, how when raising the efficiency, to reduce the discharging of combustion machine, become the difficult problem that current urgent need solves.Though the two is contradiction not logically, under in the face of complicated working condition, take into account simultaneously, but and be not easy.For example application number is disclosed " variable compression ratio internal combustion engine " in the patent of invention file of 200780015799.X, adopt camshaft to make engine cylinder " raise " lid to a certain extent, thereby compression ratio can change, but it has not only added the driving force of camshaft, and changed the unitary construction of internal-combustion engine, make the layout of fuel oil and cooling system difficult unusually.And for example Japanese patent application publication No. is in the patent document of JP-A-2001-317383, and the removable connecting rod that is proposed is handled the some scheme, and it is handled still needs the external force acting, and has changed the piston motion rule, is difficult to reach promising result.In sum, when the main deficiency of existing scheme is to change pressure ratio, has changed the characteristics of motion of internal-combustion engine or brought the complicated adjusting system into, lost more than gain.Other schemes except that bent axle displacement scheme has the better performance, are all attended to one thing and lose sight of another, and can not reach better level.
Summary of the invention
The object of the present invention is to provide a kind of can from mechanical transmission mechanism guarantee piston can be running the dynamic adjustments compression ratio, and under the situation that does not change original system, realize driving mechanism to a kind of variable compression ratio internal combustion engine that minimizes repacking of existing internal-combustion engine.The present invention also aims to provide a kind of compression ratio of internal-combustion engine regulating method of the driving mechanism based on the can regulate compression ratio internal combustion engine.
The object of the present invention is achieved like this:
The composition of the driving mechanism of can regulate compression ratio internal combustion engine of the present invention comprises piston 1, connecting rod 2, balancer weight 3, bent axle 4, internal gear 5, external gear 6, eccentric shaft 7, crank bearing liner 8.Piston 1 links to each other with connecting rod by wrist pin, and in cylinder, do linear reciprocating motion, connecting rod tip links to each other with eccentric shaft 7, eccentric shaft 7 and internal gear 5 relative fixed, internal gear crank bearing liner 8 (axle center) links to each other with the crank of bent axle 4, and crankshaft installed is on body, balancer weight 3 is fixed on the cranking arm of bent axle 4, internal gear 5 meshes with external gear 6 simultaneously, and external gear 6 is concentric with bent axle 4, and can rotate around the axle center.
Compression ratio of internal-combustion engine regulating method based on the driving mechanism of can regulate compression ratio internal combustion engine of the present invention is: form driving mechanism by piston, connecting rod, balancer weight, bent axle, internal gear, external gear, eccentric shaft and crank bearing liner, piston force is acted on the eccentric shaft of internal gear by connecting rod, under the motionless prerequisite of external gear, by leverage the to-and-fro motion power of piston is converted into moment on bent axle and the internal gear, and then internal gear is rotated, making the internal gear axle center is that crank shaft core rotates externally acting around the bent axle axle center; When needs are regulated compression ratio, regulate the external gear corner, corresponding internal gear corner is changed, piston top dead center and lower dead center are changed, and then regulate compression ratio.Because external gear is subjected to the clockwise and counterclockwise alternating action of external gear support reaction in one-period,, the available corresponding controlled ratchet mechanism that turns to do not drive so having external force to it.
The present invention is directed to the problem that exists in the prior art, by experience in the past, a kind of kind of drive and mechanism of variable compression ratio internal combustion engine have been invented, from mechanical transmission mechanism guarantee piston can be running the dynamic adjustments compression ratio, and under the situation that does not change original system, realize the repacking that minimizes to existing internal-combustion engine.
The present invention is by bent axle, connecting rod, piston, eccentric shaft fixing on a pair of internal tooth meshed gears and the internal gear is formed, adopt the aggregate motion of internal tooth engagement and eccentric shaft, dexterously the to-and-fro motion of piston is changed into the rotation of bent axle, and realize the compression ratio dynamic adjustments of no external driving force.
The present invention compares with variable compression ratio in the past has following characteristics:
1. this mechanism is in maximum, have the piston motion rule identical under the minimum compression ratio and do not change crank angle regulating the whole story with connecting rod, thereby little to former internal-combustion engine influence, can improve the force-bearing situation of former internal-combustion engine under the high compression ratio condition on the contrary.
2. do not changing original distribution, under the situation of oil supply system controlling mechanism, this mechanism can realize the adjusting between the highest and the lowest compression ratio, and internal-combustion engine can be worked under two kinds of compression ratios.Having the distribution that matches, under the situation of oil supply system controlling mechanism, this mechanism can realize continuous compression ratio adjustment.
3. this mechanism can realize not having external force under certain condition and regulate i.e. under the condition of not introducing external force (it is less relatively to regulate ratchet force, can ignore), the adjusting of realization compression ratio.This is a no small breakthrough for the conventional compression ratio regulating system, and it can substantially improve every index of motor.
Description of drawings
Fig. 1 is a structural scheme of mechanism of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the annexation figure of bent axle, internal gear and eccentric shaft;
Fig. 4 is the left view of Fig. 3.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1-Fig. 4, the composition of the driving mechanism of can regulate compression ratio internal combustion engine of the present invention comprises piston 1, connecting rod 2, balancer weight 3, bent axle 4, internal gear 5, external gear 6, eccentric shaft 7, crank bearing liner 8.Piston 1 links to each other with connecting rod by wrist pin, and in cylinder, do linear reciprocating motion, connecting rod tip links to each other with eccentric shaft 7, eccentric shaft 7 and internal gear 5 relative fixed, internal gear crank bearing liner 8 (axle center) links to each other with the crank of bent axle 4, crankshaft installed is on body, balancer weight 3 is fixed on the cranking arm of bent axle 4, internal gear 5 meshes with external gear 6 simultaneously, external gear 6 is concentric with bent axle 4, and can rotate around the axle center, concrete means of fixation and go up ratchet and arrange and can change flexibly with concrete condition, for reaching stress condition preferably, engaging gear be preferably a pair of and with respect to the piston center be symmetrically distributed in two crank arm on, but, also can only there be pair of engaged gears for consideration to cost.
Compression ratio of internal-combustion engine regulating method based on the driving mechanism of can regulate compression ratio internal combustion engine of the present invention is implemented as follows: piston force is acted on the eccentric shaft of internal gear by connecting rod, under the motionless prerequisite of external gear, by leverage (engagement place is a fulcrum) the to-and-fro motion power of piston is converted into moment on bent axle and the internal gear, and then internal gear is rotated, because internal gear rotates relative to crank shaft core, so rotate relative to the bent axle axle center engagement place, thereby make the internal gear axle center, be that crank shaft core rotates around the bent axle axle center, thus externally acting.When needs are regulated compression ratio, regulate the external gear corner, corresponding internal gear corner is changed, thereby piston top dead center and lower dead center are changed, and then regulate compression ratio.Because external gear is subjected to the clockwise and counterclockwise alternating action of external gear support reaction in one-period,, the available corresponding controlled ratchet mechanism that turns to do not drive so having external force to it.
When needs change compression ratio, by regulating external gear, change the corner of internal gear, thereby change the eccentric shaft angle at top dead center, piston top dead center is changed, thereby change compression ratio.The adjusting of external gear has multiple mode, as turbine and worm, cylindrical cam mechanism, wherein if will realize not having external motivating force regulates, can adopt bidirectional ratchet mechanism.It does not belong to this patent category, does not do and thoroughly discusses.
Claims (2)
1. the driving mechanism of a can regulate compression ratio internal combustion engine, form and comprise piston, connecting rod, balancer weight, bent axle, internal gear, external gear, eccentric shaft, crank bearing liner, it is characterized in that: piston links to each other with connecting rod and do linear reciprocating motion in cylinder, connecting rod tip links to each other with eccentric shaft, eccentric shaft and internal gear relative fixed, the crank of internal gear crank bearing liner bent axle links to each other, crankshaft installed is on body, internal gear and external gear engagement, external gear also can rotate around the axle center with bent axle is concentric, and balancer weight is installed on the bent axle.
2. compression ratio of internal-combustion engine regulating method based on the driving mechanism of can regulate compression ratio internal combustion engine, it is characterized in that: form driving mechanism by piston, connecting rod, balancer weight, bent axle, internal gear, external gear, eccentric shaft and crank bearing liner, piston force is acted on the eccentric shaft of internal gear by connecting rod, under the motionless prerequisite of external gear, by leverage the to-and-fro motion power of piston is converted into moment on bent axle and the internal gear, and then internal gear is rotated, making the internal gear axle center is that crank shaft core rotates externally acting around the bent axle axle center; When needs are regulated compression ratio, regulate the external gear corner, corresponding internal gear corner is changed, piston top dead center and lower dead center are changed, and then regulate compression ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910073440A CN101709675A (en) | 2009-12-17 | 2009-12-17 | Compression ratio adjustable transmission mechanism of internal combustion engine and adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910073440A CN101709675A (en) | 2009-12-17 | 2009-12-17 | Compression ratio adjustable transmission mechanism of internal combustion engine and adjusting method |
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| CN101709675A true CN101709675A (en) | 2010-05-19 |
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| CN200910073440A Pending CN101709675A (en) | 2009-12-17 | 2009-12-17 | Compression ratio adjustable transmission mechanism of internal combustion engine and adjusting method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374042A (en) * | 2010-08-23 | 2012-03-14 | 现代自动车株式会社 | Variable compression ratio apparatus |
| CN103047002A (en) * | 2012-12-17 | 2013-04-17 | 沈大兹 | Variable compression ratio device with connecting rod journals and eccentric sleeves |
| CN103470382A (en) * | 2013-08-28 | 2013-12-25 | 长城汽车股份有限公司 | Engine compression ratio regulating mechanism |
| CN103807035A (en) * | 2012-11-02 | 2014-05-21 | 现代自动车株式会社 | Variable compression ratio apparatus |
| CN105605081A (en) * | 2016-03-18 | 2016-05-25 | 蔡建龙 | Engine crankshaft |
| CN106014628A (en) * | 2016-07-12 | 2016-10-12 | 魏伯卿 | Gear control telescopic worm wheel boost adjusting device of radial movement variable-cylinder engine |
| CN106065813A (en) * | 2016-07-18 | 2016-11-02 | 朱晓明 | A kind of electromotor connected Crankless engine drive mechanism and there is it |
| CN106837539A (en) * | 2017-02-09 | 2017-06-13 | 夏建国 | Internal combustion shaped saves at a high speed force engine |
| CN110043364A (en) * | 2019-04-11 | 2019-07-23 | 同济大学 | A kind of engine compression ratio regulating mechanism |
| CN111957868A (en) * | 2020-07-09 | 2020-11-20 | 蒙特费罗(湖州)电梯部件有限公司 | A high strength steel sheet hot stamping forming apparatus for producing for elevator accessories |
| CN112502829A (en) * | 2020-02-24 | 2021-03-16 | 长城汽车股份有限公司 | Method for assembling variable compression ratio driving structure |
| CN112855357A (en) * | 2021-01-24 | 2021-05-28 | 效俊林 | Variable piston stroke and variable compression ratio mechanism of internal combustion engine and control method |
-
2009
- 2009-12-17 CN CN200910073440A patent/CN101709675A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374042B (en) * | 2010-08-23 | 2015-11-25 | 现代自动车株式会社 | The device of variable compression ratio |
| CN102374042A (en) * | 2010-08-23 | 2012-03-14 | 现代自动车株式会社 | Variable compression ratio apparatus |
| CN103807035B (en) * | 2012-11-02 | 2017-09-29 | 现代自动车株式会社 | Variable compression ratio device |
| CN103807035A (en) * | 2012-11-02 | 2014-05-21 | 现代自动车株式会社 | Variable compression ratio apparatus |
| CN103047002A (en) * | 2012-12-17 | 2013-04-17 | 沈大兹 | Variable compression ratio device with connecting rod journals and eccentric sleeves |
| CN103047002B (en) * | 2012-12-17 | 2015-01-28 | 沈大兹 | Variable compression ratio device with connecting rod journals and eccentric sleeves |
| CN103470382A (en) * | 2013-08-28 | 2013-12-25 | 长城汽车股份有限公司 | Engine compression ratio regulating mechanism |
| CN103470382B (en) * | 2013-08-28 | 2016-03-02 | 长城汽车股份有限公司 | A kind of engine compression ratio controlling mechanism |
| CN105605081A (en) * | 2016-03-18 | 2016-05-25 | 蔡建龙 | Engine crankshaft |
| CN106014628A (en) * | 2016-07-12 | 2016-10-12 | 魏伯卿 | Gear control telescopic worm wheel boost adjusting device of radial movement variable-cylinder engine |
| CN106065813A (en) * | 2016-07-18 | 2016-11-02 | 朱晓明 | A kind of electromotor connected Crankless engine drive mechanism and there is it |
| CN106065813B (en) * | 2016-07-18 | 2019-03-22 | 朱晓明 | A kind of series connection Crankless engine transmission mechanism and the engine with it |
| CN106837539A (en) * | 2017-02-09 | 2017-06-13 | 夏建国 | Internal combustion shaped saves at a high speed force engine |
| CN110043364A (en) * | 2019-04-11 | 2019-07-23 | 同济大学 | A kind of engine compression ratio regulating mechanism |
| CN112502829A (en) * | 2020-02-24 | 2021-03-16 | 长城汽车股份有限公司 | Method for assembling variable compression ratio driving structure |
| CN112502829B (en) * | 2020-02-24 | 2022-02-01 | 长城汽车股份有限公司 | Method for assembling variable compression ratio driving structure |
| CN111957868A (en) * | 2020-07-09 | 2020-11-20 | 蒙特费罗(湖州)电梯部件有限公司 | A high strength steel sheet hot stamping forming apparatus for producing for elevator accessories |
| CN112855357A (en) * | 2021-01-24 | 2021-05-28 | 效俊林 | Variable piston stroke and variable compression ratio mechanism of internal combustion engine and control method |
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Open date: 20100519 |