CN104847493A - Variable-compression-ratio engine - Google Patents
Variable-compression-ratio engine Download PDFInfo
- Publication number
- CN104847493A CN104847493A CN201510115328.2A CN201510115328A CN104847493A CN 104847493 A CN104847493 A CN 104847493A CN 201510115328 A CN201510115328 A CN 201510115328A CN 104847493 A CN104847493 A CN 104847493A
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- connecting rod
- piston
- hydraulic
- pin
- crossbeam
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- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a variable-compression-ratio engine. The variable-compression-ratio engine comprises a piston, a connecting rod and a crankshaft and is characterized in that the connecting rod comprises an upper connecting rod body and a lower connecting rod body, the upper end of the upper connecting rod body is connected with the piston through a piston pin, the lower end of the upper connecting rod body is connected with one end of a beam through a left pin, the beam is connected with the upper end of the lower connecting rod body through a beam pin, and the lower end of the lower connecting rod body is connected with the crankshaft through a connecting rod shaft neck; the other end of the beam is connected with a control rod through a right pin, and the control rod can only move vertically; an elastic part is arranged at the lower end of the control rod. The output efficiency of the engine can be effectively improved, and the purposes of saving energy and improving efficiency are achieved.
Description
Technical field
The present invention relates to a kind of motor, particularly a kind of variable compression ratio engine.
Background technique
The volume of cylinder when compression ratio of motor refers to that piston movement arrives lower dead center and the ratio of piston movement to volume of cylinder during top dead center, be affect power, key factor that moment of torsion exports, the compression ratio of traditional motor is generally fixing.In order to make modern engine function play better efficiency in the operating mode of various change, to become becoming the ride quality improving motor, automaker starts the motor of the directional steering variable compression ratio of research in recent years.Motor in, low-load time, in order to improve the emission level of motor, needing to adopt larger compression ratio, and adopting higher boost pressure when high load, need to reduce compression ratio, the aviation fuel of motor and output power can be improved like this.Along with oil price can continue high, exploitation variable compression ratio engine realizes the target of energy efficiency, is the main trend of automobile industry development.
Summary of the invention
The invention provides a kind of variable compression ratio engine.
A kind of variable compression ratio engine, comprises a kind of variable compression ratio engine, comprises piston, connecting rod and bent axle, it is characterized in that:
Described connecting rod comprises connecting rod and lower link, the upper end of upper connecting rod is connected with piston by wrist pin, the lower end of upper connecting rod is connected with one end of crossbeam by left pin, and crossbeam is connected by a crossbeam pin with the upper end of lower link, and the lower end of lower link is connected with bent axle by rod journal; The other end of crossbeam is connected with controlling rod by right pin, and controlling rod can only move up and down; The lower end of controlling rod is provided with elastic component, the upper end of controlling rod is connected with the lower end of hydraulic piston, and hydraulic piston is contained in the inner chamber of hydraulic case, and hydraulic case is connected through a hydraulic tube with oil pressure switch, oil pressure switch is connected with the oil hydraulic pump on side, and oil hydraulic pump is connected with the bent axle of motor
Described elastic component is spring, and spring is fixed on cylinder inner wall by spring seat.
The present invention is coordinated with oil hydraulic pump by upper and lower strut, control strip, crossbeam, hydraulic piston, elastic component, when expansion stroke lower link and crank shape angled before distance between regulating piston and cylinder head make compression ratio change after light a fire again or oil spout, the pressure maximum that burning is produced acts in best angle, the transmission of exerting all one's strength is more scientific, play a multiplier role, effectively can improve the delivery efficiency of motor, reach energy efficiency object, the compression ratio of motor can be regulated simultaneously.Thus meet the double requirements of Consumer to automobile dynamic quality and fuel economy, be also the trend having complied with automobile industry development.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention;
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Embodiment
As shown in drawings, a kind of variable compression ratio engine, comprise piston 1, connecting rod and bent axle 6, connecting rod comprises connecting rod 2 and lower link 4, the upper end of upper connecting rod 2 is connected with piston 1 by wrist pin, the lower end of upper connecting rod 2 is connected with one end of crossbeam 3 by left pin 16, and crossbeam 3 is connected by a crossbeam pin 17 with the upper end of lower link 4, and the lower end of lower link 4 is connected with bent axle 6 by rod journal; The other end of crossbeam 3 is connected with controlling rod 8 by right pin 7, and controlling rod 8 can only move up and down; The lower end of controlling rod 8 is provided with elastic component, and the upper end of controlling rod 8 is connected with hydraulic piston 11, and hydraulic piston 11 is contained in the inner chamber of hydraulic case 12, and hydraulic case 12 is connected through a hydraulic tube 15 with oil pressure switch 13, and oil pressure switch 13 is connected with the oil hydraulic pump 14 on side.
Elastic component is spring 9, and spring 9 is fixed on cylinder inner wall by spring seat 10.
The working procedure of this motor is: when motor enters compression stroke, and bent axle 6 rotates from the bottom up, and piston 1 also moves from the bottom up, and when bent axle 6 forwards peak to, piston 1 also runs to peak, now also misfires or oil spout.Enter expansion stroke, bent axle 6 rotates from top to bottom, when bent axle 6 from up to down turns to crank 5 and lower link 4 shape has a certain degree, meanwhile hydraulic piston 11 moves downward low because the high pressure liquid force feed being subject to oil hydraulic pump 14 generation flows in hydraulic case 12 through hydraulic tube 15 and then promotes hydraulic piston.Because hydraulic piston is subject to the promotion of the high pressure liquid force feed that oil hydraulic pump 14 produces, so hydraulic piston 11 and controlling rod 8 move some distances from top to down, the distance of getting off from upper movement just compensate for bent axle 6 and rotates to piston 1 from top to bottom, upper connecting rod 2, the impact that crossbeam 3 brings, therefore, moving downward crank 5 from bent axle from peak has a certain degree in this short time with lower link 4 shape, it is constant that piston 1 remains on same position, the pressure that now igniting or oil jetting combustion produce again acts in best position and angle, the transmission that can exert all one's strength is more scientific.The pressure that burning produces promotes piston, upper connecting rod 2, crossbeam 3 on one side, lower link 4 runs downwards together along with bent axle 6, hydraulic piston 11 is pushed to bottom due to what be subject to hydraulic oil in hydraulic case 12, so hydraulic piston 11, controlling rod 8 during this period of time invariant position, until when bent axle 6 forwards minimum point soon to, oil pressure switch 13 is by switch opens, 10, spring is by hydraulic piston 11, controlling rod 8 upwards jack-up makes it playback, to exhaust stroke, suction stroke, compression stroke piston all can move along with bent axle 6 together, constant at same position in only when expansion stroke just starts one little short time, until when crank 5 and lower link 4 shape have a certain degree, just can move together along with bent axle 6 after igniting or oil spout.The distance that the size that the pressure produced by oil hydraulic pump 14 promotes the distance of hydraulic piston 11 directly changes between piston 1 and cylinder head also just directly changes compression ratio.
Above example is only as the use of the present invention, and the present invention is not limited to above declared range, if replace above-described embodiment by the content of other equivalence any, they fall within protection scope of the present invention too.
Claims (2)
1. a variable compression ratio engine, comprises a kind of variable compression ratio engine, comprises piston, connecting rod and bent axle, it is characterized in that:
Described connecting rod comprises connecting rod (2) and lower link (4), the upper end of upper connecting rod (2) is connected with piston (1) by wrist pin, the lower end of upper connecting rod (2) is connected with one end of crossbeam (3) by left pin (16), crossbeam (3) is connected by a crossbeam pin (17) with the upper end of lower link (4), and the lower end of lower link (4) is connected with bent axle (6) by rod journal; The other end of crossbeam (3) is connected with controlling rod (8) by right pin (7), and controlling rod (8) can only move up and down; The lower end of controlling rod (8) is provided with elastic component, the upper end of controlling rod (8) is connected with the lower curtate of hydraulic piston 11, hydraulic piston 11 is contained in the inner chamber of hydraulic case 12, hydraulic case 12 is connected through a hydraulic tube with oil pressure switch 13, and oil pressure switch 13 is connected with the oil hydraulic pump 14 on side.
2. variable compression ratio engine according to claim 1, is characterized in that:
Described elastic component is spring (9), and spring (9) is fixed on cylinder inner wall by spring seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115328.2A CN104847493A (en) | 2015-03-17 | 2015-03-17 | Variable-compression-ratio engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115328.2A CN104847493A (en) | 2015-03-17 | 2015-03-17 | Variable-compression-ratio engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104847493A true CN104847493A (en) | 2015-08-19 |
Family
ID=53847408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510115328.2A Pending CN104847493A (en) | 2015-03-17 | 2015-03-17 | Variable-compression-ratio engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104847493A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709634A (en) * | 2020-12-30 | 2021-04-27 | 东风汽车集团有限公司 | Engine transmission device with variable compression ratio and engine |
-
2015
- 2015-03-17 CN CN201510115328.2A patent/CN104847493A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709634A (en) * | 2020-12-30 | 2021-04-27 | 东风汽车集团有限公司 | Engine transmission device with variable compression ratio and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Fan Weijun Document name: Notification of Passing Preliminary Examination of the Application for Invention |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Fan Weijun Document name: Notification of Publication of the Application for Invention |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Fan Weijun Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Fan Weijun Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |