CN104847506A - Variable-compression-ratio structure of engine and engine - Google Patents
Variable-compression-ratio structure of engine and engine Download PDFInfo
- Publication number
- CN104847506A CN104847506A CN201410803169.0A CN201410803169A CN104847506A CN 104847506 A CN104847506 A CN 104847506A CN 201410803169 A CN201410803169 A CN 201410803169A CN 104847506 A CN104847506 A CN 104847506A
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- China
- Prior art keywords
- compression ratio
- adjustment ring
- eccentric adjustment
- variable compression
- tappet
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Abstract
The invention discloses a variable-compression-ratio structure of an engine. The variable-compression-ratio structure of the engine comprises a crank shaft case, a crank shaft installed in the crank shaft case through a main bearing seat, an eccentric adjustment ring and a driving mechanism, wherein the eccentric adjustment ring is installed on a spindle neck of the crank shaft in a sleeving mode and installed in the main bearing seat, the driving mechanism is used for driving the eccentric adjustment ring to rotate in the main bearing seat so as to change the position of the crank shaft in the crank shaft case. The invention further discloses the engine. The engine comprises the variable-compression-ratio structure. In the variable-compression-ratio structure, the position of the crank shaft in the crank shaft case is changed through the eccentric adjustment ring, accordingly the position of a top dead center of a piston and the compression ratio of the engine can be changed, and the variable-compression-ratio structure is simple and easy to achieve.
Description
Technical field
The present invention relates to technical field of engines, particularly, relate to a kind of variable compression ratio of engines structure, and comprise the motor of this structure.
Background technique
In order to improve the working efficiency of motor under different operating mode, reduce the discharge of pollutant, the motor that can change compression ratio arises at the historic moment.
In prior art, some motor can change compression ratio by the space changing firing chamber, but because firing chamber place temperature is high, design accurate, therefore can cause the problems such as complex structure, functional reliability difference.
Summary of the invention
The object of this invention is to provide a kind of novel variable compression ratio of engines structure, it can the compression ratio of dynamic conditioning motor, and structure simply, easily realizes.
To achieve these goals, the invention provides a kind of variable compression ratio of engines structure, comprise crankcase and be arranged on the bent axle in this crankcase by main bearing seat, this variable compression ratio of engines structure comprises eccentric adjustment ring and driving mechanism, the main journal that this eccentric adjustment ring is sleeved on described bent axle is arranged in described main bearing seat, and described driving mechanism rotates to change the position of described bent axle in described crankcase for driving described eccentric adjustment ring in described main bearing seat.
The present invention also provides a kind of motor, and this motor comprises above-mentioned variable compression ratio of engines structure.
In the present invention, change bent axle position in the crankcase, thus can change the position of piston top dead center, thus can change the compression ratio of motor by eccentric adjustment ring, structure simply and easily realize.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the variable compression ratio of engines STRUCTURE DECOMPOSITION figure according to one embodiment of the present invention, wherein show schematically show crankcase and bent axle;
Fig. 2 is the perspective exploded view of variable compression ratio of engines structure in Fig. 1;
Fig. 3 is the plan view of variable compression ratio of engines structure in Fig. 2.
Description of reference numerals
10 crankcase 20 eccentric adjustment ring 30 tappet
11 main bearing seat 12 bent axle 13 bearings
14 construction bolt 21 pressed on rings, 22 times rings
23 fastening piece 24 opening 25 pin-and-holes
26 bearing pin 27 connecting pin 31 upper ends
32 lower ends
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As shown in Figure 1, the invention provides a kind of variable compression ratio of engines structure, comprise crankcase 10 and be arranged on the bent axle 12 in this crankcase 10 by main bearing seat 11, this variable compression ratio of engines structure comprises eccentric adjustment ring 20 and driving mechanism, the main journal that this eccentric adjustment ring 20 is sleeved on described bent axle 12 is arranged in described main bearing seat 11, and described driving mechanism rotates to change the position of described bent axle 12 in described crankcase 10 for driving described eccentric adjustment ring 20 in described main bearing seat 11.Reference character 14 in Fig. 1 represents construction bolt, for the bottom of main bearing seat 11 is installed to crankcase 10.
In the present invention, eccentric adjustment ring 20 is sleeved on the main journal of bent axle 12, then be arranged in the main bearing seat 11 of crankcase 10, by rotating eccentricity adjustment ring 20, the i.e. position of adjustable bent axle 12 in crankcase 10, thus the position of piston top dead center can be changed, can change the compression ratio of motor thus, structure is simply and easily realize.The rotation of eccentric adjustment ring 20 can be realized by multiple driving mode, and such as mechanical type, hydraulic type, pneumatic type etc., this is easy understand and realization to those skilled in the art.Hereinafter, the present invention is described in detail for optimal way wherein.
As a kind of mode of execution, between eccentric adjustment ring 20 and the main journal of bent axle 12, be provided with bearing 13, preferably sliding bearing.As shown in Figure 1, in the present invention, described bearing 13 preferably includes top bearing shell and lower bearing.
As one preferred embodiment, as shown in Figures 2 and 3, eccentric adjustment ring 20 of the present invention can comprise the pressed on ring 21 of docking and lower ring 22, can be installed on the main journal of bent axle 12 thus easily.As a kind of embodiment, the side of described pressed on ring 21 and lower ring 22 is hinged, and such as hinged by connecting pin 27, relative side is connected by fastening piece 23, such as, connected by fastening screw trip bolt or clamping bolt.
As shown in Figures 2 and 3, driving mechanism of the present invention comprises tappet 30, and the lower end 32 of this tappet 30 is connected to described eccentric adjustment ring 20, and be such as connected to pressed on ring 21, upper end 31 drives by hydraulic system.Preferably, the quantity of tappet 30 is two and is connected respectively to the both sides of the center line of eccentric adjustment ring 20, and eccentric adjustment ring 20 can be driven thus easily to rotate in main bearing seat 11.
As shown in Figure 2, as a kind of embodiment, described eccentric adjustment ring 20 is provided with opening 24 and axially runs through the pin-and-hole 25 of this opening, the lower end 32 of described tappet 30 is formed with axle sleeve and this axle sleeve is arranged in described opening 24, and bearing pin 26 can be connected described tappet 30 and eccentric adjustment ring 20 through described pin-and-hole 25 and described axle sleeve.
In the present invention, eccentric adjustment ring 20 drives rotation preferably by hydraulic system, and hydraulic oil can be taken from the main oil gallery in engine cylinder-body, and structure is simple and be easy to realize, and conveniently controls.
Such as, described hydraulic system can comprise the oil duct be formed on engine cylinder-body, and the upper end 31 of described tappet 30 is inserted in this oil duct.When oil pressure raises in oil duct, a tappet 30 can be promoted and move downward, drive eccentric adjustment ring 20 to rotate.
In addition, stop member can be provided with in described oil duct to limit the movement travel of described tappet 30, play safety protection function, prevent oil pressure excessive and cause the rotation of eccentric adjustment ring 20 excessive.In addition, described hydraulic system can also comprise one-way valve to keep the oil pressure in described oil duct.
Finally, the present invention is claimed a kind of motor also, such as petrol engine or diesel engine, and this motor have employed variable compression ratio of engines structure mentioned above.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a variable compression ratio of engines structure, comprise crankcase (10) and be arranged on the bent axle (12) in this crankcase by main bearing seat (11), it is characterized in that, this variable compression ratio of engines structure comprises eccentric adjustment ring (20) and driving mechanism, the main journal that this eccentric adjustment ring (20) is sleeved on described bent axle (12) is arranged in described main bearing seat (11), described driving mechanism rotates to change the position of described bent axle (12) in described crankcase (10) in described main bearing seat (11) for driving described eccentric adjustment ring (20).
2. variable compression ratio of engines structure according to claim 1, is characterized in that, is provided with bearing (13) between described eccentric adjustment ring (20) and the main journal of described bent axle (12).
3. variable compression ratio of engines structure according to claim 1, is characterized in that, described eccentric adjustment ring (20) comprises pressed on ring (21) and the lower ring (22) of docking.
4. variable compression ratio of engines structure according to claim 3, is characterized in that, the side of described pressed on ring (21) and lower ring (22) is hinged, and relative side is connected by fastening piece (23).
5. variable compression ratio of engines structure according to claim 1, it is characterized in that, described driving mechanism comprises tappet (30), the lower end (32) of this tappet (30) is connected to described eccentric adjustment ring (20), and upper end (31) are driven by hydraulic system.
6. variable compression ratio of engines structure according to claim 5, is characterized in that, described tappet (30) is two and is connected respectively to the center line both sides of described eccentric adjustment ring (20).
7. variable compression ratio of engines structure according to claim 6, is characterized in that, described hydraulic system comprises the oil duct be formed on engine cylinder-body, and the upper end (31) of described tappet (30) is inserted in this oil duct.
8. variable compression ratio of engines structure according to claim 7, is characterized in that, is provided with stop member to limit the movement travel of the upper end (31) of described tappet (30) in described oil duct.
9. variable compression ratio of engines structure according to claim 5, it is characterized in that, described eccentric adjustment ring (20) is provided with opening (24) and axially runs through the pin-and-hole (25) of this opening (24), the lower end (32) of described tappet (30) is formed with axle sleeve and this axle sleeve is arranged in described opening (24), and bearing pin (26) is connected described tappet (30) and eccentric adjustment ring (20) through described pin-and-hole (25) with described axle sleeve.
10. a motor, is characterized in that, this motor comprises according to the variable compression ratio of engines structure in claim 1-9 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410803169.0A CN104847506A (en) | 2014-12-19 | 2014-12-19 | Variable-compression-ratio structure of engine and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410803169.0A CN104847506A (en) | 2014-12-19 | 2014-12-19 | Variable-compression-ratio structure of engine and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104847506A true CN104847506A (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410803169.0A Pending CN104847506A (en) | 2014-12-19 | 2014-12-19 | Variable-compression-ratio structure of engine and engine |
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| Country | Link |
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| CN (1) | CN104847506A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089469A (en) * | 2016-08-04 | 2016-11-09 | 广西玉柴机器股份有限公司 | Tunnel type cylinder block |
| WO2018045706A1 (en) * | 2016-09-09 | 2018-03-15 | 王祖军 | Stepless variable-compression ratio internal combustion engine |
| CN110273765A (en) * | 2018-03-14 | 2019-09-24 | 北汽福田汽车股份有限公司 | Engine and vehicle |
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| DE4226361A1 (en) * | 1992-08-10 | 1994-04-07 | Alex Zimmer | Fuel-air mixt. compressing IC engine - has remaining space during compression varied w.r.t. mixt. feed quality in direction of best compression ratio |
| CN201377356Y (en) * | 2009-04-21 | 2010-01-06 | 张志强 | VCR device of automotive engine |
| US20100132672A1 (en) * | 2008-12-02 | 2010-06-03 | Hyundai Motor Company | Variable Compression Ratio Apparatus for Vehicle Engine |
| DE102009043504A1 (en) * | 2009-09-30 | 2011-03-31 | Fev Motorentechnik Gmbh | Stroke piston mechanism for use in e.g. petrol engine, has crank shafts that do not protrude radially over maximum outer diameter of tappets, where maximum outer diameter of eccentric tappets is smaller than movement curve |
| CN102400794A (en) * | 2011-11-21 | 2012-04-04 | 黄轩弟 | Variable-compression-ratio engine |
| CN102575579A (en) * | 2009-10-08 | 2012-07-11 | 戴姆勒股份公司 | Internal combustion engine |
| CN103850809A (en) * | 2012-12-01 | 2014-06-11 | 郑力铭 | Continuous variable compression ratio engine |
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2014
- 2014-12-19 CN CN201410803169.0A patent/CN104847506A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4226361A1 (en) * | 1992-08-10 | 1994-04-07 | Alex Zimmer | Fuel-air mixt. compressing IC engine - has remaining space during compression varied w.r.t. mixt. feed quality in direction of best compression ratio |
| US20100132672A1 (en) * | 2008-12-02 | 2010-06-03 | Hyundai Motor Company | Variable Compression Ratio Apparatus for Vehicle Engine |
| CN201377356Y (en) * | 2009-04-21 | 2010-01-06 | 张志强 | VCR device of automotive engine |
| DE102009043504A1 (en) * | 2009-09-30 | 2011-03-31 | Fev Motorentechnik Gmbh | Stroke piston mechanism for use in e.g. petrol engine, has crank shafts that do not protrude radially over maximum outer diameter of tappets, where maximum outer diameter of eccentric tappets is smaller than movement curve |
| CN102575579A (en) * | 2009-10-08 | 2012-07-11 | 戴姆勒股份公司 | Internal combustion engine |
| CN102400794A (en) * | 2011-11-21 | 2012-04-04 | 黄轩弟 | Variable-compression-ratio engine |
| CN103850809A (en) * | 2012-12-01 | 2014-06-11 | 郑力铭 | Continuous variable compression ratio engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089469A (en) * | 2016-08-04 | 2016-11-09 | 广西玉柴机器股份有限公司 | Tunnel type cylinder block |
| CN106089469B (en) * | 2016-08-04 | 2018-11-27 | 广西玉柴机器股份有限公司 | Tunnel type cylinder block |
| WO2018045706A1 (en) * | 2016-09-09 | 2018-03-15 | 王祖军 | Stepless variable-compression ratio internal combustion engine |
| CN110273765A (en) * | 2018-03-14 | 2019-09-24 | 北汽福田汽车股份有限公司 | Engine and vehicle |
| CN110273765B (en) * | 2018-03-14 | 2021-04-16 | 北汽福田汽车股份有限公司 | Engine and vehicle |
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Application publication date: 20150819 |
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| RJ01 | Rejection of invention patent application after publication |