CN102425500A - Engine with a variable compression rate - Google Patents
Engine with a variable compression rate Download PDFInfo
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- CN102425500A CN102425500A CN2011103386734A CN201110338673A CN102425500A CN 102425500 A CN102425500 A CN 102425500A CN 2011103386734 A CN2011103386734 A CN 2011103386734A CN 201110338673 A CN201110338673 A CN 201110338673A CN 102425500 A CN102425500 A CN 102425500A
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- active cover
- outlet pipe
- suction tude
- oil
- compression ratio
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Abstract
The invention relates to a system with a variable compression ratio of an engine. The engine is characterized in that the top of an air cylinder sleeve is provided with a movable cylinder cover, and the middle of the top of the movable cylinder cover is provided with a vertical rack; the frontage of the rack is provided with teeth which are meshed with a worm rod, the reverse surface of the rack is a flat surface contacted with a pinch roller, and a cylinder cover position sensor is arranged on the side face of the rack; the top end of the worm rod is fixedly connected with a hydraumatic rotating wheel, and the hydraumatic rotating wheel is connected with an engine lubricating oil pump via an oil pipe through a one-way electromagnetic valve; and an ECU (electrical controlled unit) controls the opening and closure of the electromagnetic valve according to the information of sensors such as an engine revolution speed sensor, an inlet valve position sensor, an accelerator pedal sensor, the cylinder cover position sensor and the like, thereby changing the size of the variable compression ratio, and realizing the accurate control on the variable compression ratio.
Description
With cross-reference to related applications.
With my another " hydraulic valve actuation system " patent application, there is the structural dependence of control system in this " variable compression ratio engine " patent application, therefore specifies the relevance of above-mentioned two patent applications.
Technical field
The present invention designs a kind of engine variable compression ratio system, specifically can realize the comprehensive control to compression ratio.
Background technique
The compression specific energy improves engine thermal efficiency, improves the Economy of fuel oil, helps reducing discharging and good fuel tolerance.
Present known change compression ratio system, generally complex structures all will carry out a large amount of changes to motor usually; And can not change compression ratio in real time accurately, Chinese patent [200310123391.8] discloses a kind of transformation ratio method that contracts, and this method is when becoming compression ratio; Because of piston moves, cause intake valve and exhaust retention, form exhaust air outlet flue residual exhaust gases at the end; Form vapour lock during air inlet, and can't use inlet manifold multiple spot diesel injection system.This change compression ratio system can accurately not controlled the compression ratio size; Its hydraulic mechanism can be under engine high pressure combustion gas effect back seat, the above-mentioned transformation ratio method that contracts, cylinder half the when becoming compression ratio is in aspirating stroke; And second half cylinder causes existing oil-fired system to adapt in exhaust stroke.
Summary of the invention
Order of the present invention ground is in order to overcome, and the significant drawback that above-mentioned known technology exists provides a kind of to becoming the compression ratio system method of control comprehensively, can make motor when arbitrary operating mode, all send out best performance.
Order of the present invention ground is to reach through following measure: be provided with active cover at the cylinder sleeve top, described active cover is provided with, intake valve, exhaust valve, suction tude, outlet pipe, oil sprayer, spark plug, cooling water channel, cylinder cap position transducer, active cover driving mechanism.
Described active cover driving mechanism is characterized in that: be provided with the setting tooth bar in the active cover center of top; There are tooth and scroll bar engagement in the tooth bar front; The scroll bar top is fixedly connected hydraulic rotary wheel, and the tooth bar back side is that the plane contacts with pinch roller, and said tooth bar side is provided with the cylinder cap position transducer.
Described hydraulic rotary wheel is circular, and its periphery is provided with blade uniformly, and described hydraulic rotary wheel is rotating to be installed in the rotary wheel shell, and respectively being provided with at 20-50 degree angle, said hydraulic rotary wheel center line both sides is just changeing jet and regurgitating hydraulic fluid port.
The said jet that just changeing is provided with the unidirectional electrical magnet valve, and said counter-rotating jet also is provided with the unidirectional electrical magnet valve, and said clockwise and anticlockwise return opening connects oil circuit through an oil pipe respectively.
Respectively be fixedly connected a suction tude and outlet pipe in said active cover both sides, said suction tude one end connects the suction valve cone mouth, and the other end and suction tude are responsible for to gulp down and are connect; Said outlet pipe one end connects the exhaust valve seat mouth; The other end and outlet pipe are responsible for to gulp down and are connect, and locate downwarping 100-120 angle for 50 millimeters at the end of said suction tude and outlet pipe, and are provided with 3 road seal rings; And lubricant oil filler opening and return opening, said filler opening is connected the engine lubricating oil oil circuit with return opening respectively through oil pipe.
Corresponding at said cylinder sleeve with suction tude and outlet pipe on the active cover; It is wideer 2 millimeters than said suction tude and said outlet pipe outer diameter that cylinder sleeve is provided with diameter; Long move up and down the tracheae movable port of the long 2-4 millimeter of stroke,, respectively be fixedly connected a seal steel plate with following above the air inlet-outlet pipe in the outside of said tracheae movable port than active cover; The said seal steel plate left and right sides is provided with raised line; The cylinder sleeve arm outside corresponding with it is provided with groove, and described raised line moves up and down in groove, to keep the sealing of cylinder sleeve.
Said cylinder sleeve with and the adjacent cylinders body, the cylinder movable port that is provided with, can countercylinder the intensity generation harmful effect of cover and cylinder block, reason is described tracheae movable port position, is the top that is positioned at the cylinder sleeve confined area.
Advantage that the present invention has compared to known techniques and beneficial effect: this change compression ratio system is to utilize the auto-lock function of scroll bar to tooth bar; Guarantee after a compression ratio adjustment finishes; Active cover back seat not under the high-pressure gas effect of cylinder, and at the cylinder cap position transducer etc., the cooperation of sensor realizes the accurate control of the arbitrary size of compression ratio down; And can also single cylinder change compression ratio in aspirating stroke; Can certainly when exhaust stroke, change compression ratio, because all cylinder is all at same changes stroke compression ratio, so need not carry out big transformation to the prior fuel oil system.
Through reading this paper and with reference to accompanying drawing and specific embodiment, further feature and advantage that method of the present invention had will be more obvious.
Description of drawings
This specification comprises following 3 width of cloth accompanying drawings
Fig. 1 is the view that becomes compression ratio system
Fig. 2 is the view of hydraulic rotary wheel
Fig. 3 is the view of seal steel plate and cylinder jacket wall groove
Specific embodiment
As shown in Figure 1ly be provided with on cylinder sleeve (1) top; Active cover (2), active cover (2) lower end are provided with 3 road seal rings (22) upper end 2 road seal rings (22) are set, and are fixedly connected in active cover (2) center of top and erect tooth bar (9); There are tooth and scroll bar (10) engagement in tooth bar (9) front; Scroll bar (10) roof anchorage connects hydraulic rotary wheel (23), and the tooth bar back side is that the plane contacts with pinch roller (17), and tooth bar (9) side is provided with cylinder cap position transducer (not indicating among the figure).
Hydraulic rotary wheel as shown in Figure 2 (23) is rotating to be installed in the hydraulic rotary wheel shell (16); Hydraulic rotary wheel (23) is provided with blade (24) on every side uniformly; Be respectively in hydraulic rotary wheel (23) center line both sides 20-50 degree angle be provided with just change jet (12) and the counter-rotating jet (13); Be provided with unidirectional electrical magnet valve (14) just changeing jet (12); Counter-rotating jet (13) is provided with unidirectional electrical magnet valve (15), is just going back to hydraulic fluid port (30) and is being connected the engine lubrication oil return line with counter-rotating return opening (29) through a return tube (not indicating among the figure).
Active cover as shown in Figure 1 (2) is provided with intake valve (18), exhaust valve (19), oil sprayer (20), spark plug (21).
Active cover (2) inside is provided with cooling water channel, connects engine-cooling system (not indicating among the figure) by flexible pipe respectively.
Be provided with lubricant oil filler opening and return opening (not indicating among the figure) at cylinder sleeve (1) inwall that contacts with active cover (2), the lubricant oil filler opening is connected engine oil gallery (not indicating among the figure) respectively with return opening.
Respectively be fixedly connected a suction tude (6) and outlet pipe (4) in active cover (2) both sides; One end of suction tude (6) connects the suction valve cone mouth; The other end and suction tude are responsible for (5) and are gulped down, and outlet pipe (4) one ends connect the exhaust valve seat mouth, and the other end and the outlet pipe person in charge (5) gulp down and connect; End at suction tude (6) and outlet pipe (4) is located downwarping 100-120 angle for 50 millimeters; And being provided with 3 road seal rings (8) and lubricant oil filler opening and return opening (indicating among the figure), the lubricant oil filler opening is connected engine oil gallery through oil pipe respectively with return opening, interchangeablely also can be provided with 2 road seal rings (8) at the end of suction tude (6) and outlet pipe (4).35 millimeters places spaced above are provided with the 2nd road seal ring (8) at the first road seal ring (8), and between the 1st road to the 2 road seal rings (8), are provided with lubricant oil filler opening and return opening (not indicating among the figure).
Because when becoming compression ratio, active cover (2) moves up and down, thereby drive suction tude (6) and outlet pipe (4) also move up and down in gulping down the portion of connecing, and the stroke that suction tude (6) and outlet pipe (4) move up and down equates with the stroke that active cover moves up and down.
As shown in figures 1 and 3ly respectively be provided with wideer 2 millimeters than suction tude (6) and outlet pipe (4) outer diameter in cylinder sleeve (1) both sides corresponding with active cover (2); Grow the tracheae movable port (25) of the long 2-4 millimeter of stroke that moves up and down than active cover (2); When supplying to become compression ratio; Suction tude (6) and outlet pipe (4) move up and down in tracheae movable port (25), in tracheae movable port (25) outside, suction tude (6) and outlet pipe (4) top with the following seal steel plate (3) that respectively is fixedly connected; The left and right sides of seal steel plate (3) is provided with raised line (26); Be provided with groove (4) at the cylinder sleeve outer wall corresponding with it, raised line (26) is driven the sealing of the maintenance cylinder sleeve (1) that moves up and down by suction tude (6) and outlet pipe (4) in groove (4).
The just commentaries on classics jet (12) of hydraulic rotary wheel as shown in Figure 2 (23) connects engine lubricant pump (not indicating among the figure) through its unidirectional electrical magnet valve (14) through fuel supply line (27); Counter-rotating jet (13) connects engine lubricant pump (indicating among the figure) through its unidirectional electrical magnet valve (15) through fuel supply line (28), and its special case also can use a fuel supply line with the jet (13) that reverses high pressure oil to be provided to just changeing jet (12) from lubricating pump.Just go back to hydraulic fluid port (30) and be connected engine lubrication oil return line (not indicating among the figure) with the shared oil pipe of counter-rotating return opening (29).
Top at cylinder body as shown in Figure 1 is provided with fixed structure (31), and hydraulic rotary wheel shell (16) is fixedly connected on the fixed structure (31), and the intensity of this fixed structure (31) is enough to bear the reaction force of active cover.
The operating method of described change compression ratio system will be described according to exemplary embodiment of the present invention below.
ECU (not indicating among the figure) is according to the information of engine rotation speed sensor, accelerator pedal position sensor, intake valve position transducer, cylinder cap position transducer (not indicating among the figure); Opening unidirectional electrical magnet valve (14) high pressure oil sprays with the high-voltage high-speed state from just changeing jet (12); High pressure oil high speed impact blade (24) drives hydraulic rotary wheel (23) and rotates; Hydraulic rotary wheel (23) drives tooth bar (9) through scroll bar (10) thereby driving active cover (2) moves down, and makes compression ratio become big.
ECU (not indicating among the figure) opens unidirectional electrical magnet valve (15) high pressure oil and sprays with the high-voltage high-speed state from counter-rotating jet (13); High pressure oil high speed impact blade (24) drives hydraulic rotary wheel (23) and rotates; Hydraulic rotary wheel (23) drives tooth bar (9) through scroll bar (10) thereby driving active cover (2) moves up, and compression ratio is diminished.
In interchangeable embodiment; Also can drive active cover with stepping motor; Concrete grammar is following: motor output shaft (not indicating among the figure) is fixedly connected with scroll bar (10); Motor case (among the figure indicate) is fixedly connected on the fixed mechanism (31), and motor is connected with ECU through circuit, and the change that under the control of ECU (indicating among the figure), utilizes motor to rotate and reverse to realize compression ratio greatly and diminish.
Explain for ease and the accurate accompanying claims that limits; Term " the suction tude person in charge " " the outlet pipe person in charge " " gulp down and connect " " valve movable port " " active cover " is the position that is used for these characteristics that reference and figure show, describes the characteristic of exemplary embodiment.
According to the relevant law standard, describe the present invention in detail, so this description is restriction exemplary rather than in essence.Every distortion and modification that embodiment is made still falls in protection scope of the present invention, so the legal protection scope that provides of the present invention, has only through the research claim and confirms.
Claims (10)
1. the variable compression ratio system of a motor; It is characterized in that: be provided with active cover at the cylinder sleeve top, described active cover is provided with the driving mechanism of intake valve, exhaust valve, suction tude, outlet pipe, oil sprayer, spark plug, cooling water channel, cylinder cap position transducer, active cover.
2. active cover driving mechanism according to claim 1; It is characterized in that: be provided with the setting tooth bar in the active cover center of top; There are tooth and scroll bar engagement in said tooth bar front, and described scroll bar top is fixedly connected hydraulic rotary wheel, and the described scroll bar back side is that the plane contacts with pinch roller.
3. hydraulic rotary wheel according to claim 2; It is characterized in that: hydraulic rotary wheel is for circular, and its periphery is provided with blade uniformly, and described hydraulic rotary wheel is rotating to be installed in the hydraulic rotary wheel shell; Be the angle setting of 20-50 degree respectively in said hydraulic rotary wheel center line both sides; Just changeing jet and counter-rotating jet, the said jet that just changeing is provided with the unidirectional electrical magnet valve, and said counter-rotating jet also is provided with the unidirectional electrical magnet valve; Described clockwise and anticlockwise jet connects lubricating pump through its said solenoid valve by oil pipe respectively, and described clockwise and anticlockwise return opening starts oil circuit through a return tube connection respectively.
4. according to the said suction tude of claim 1, outlet pipe; It is characterized in that: at suction tude of each side fixed connection, the outlet pipe of said active cover, an end of described suction tude connects the suction valve cone mouth, and the other end and suction tude are responsible for to gulp down and are connect; One end of described outlet pipe connects the exhaust valve seat mouth; The other end and outlet pipe are responsible for to gulp down and are connect, and locate downwarping 100-120 degree angle for 50 millimeters at the end of described suction tude, outlet pipe, and are provided with 3 road seal rings; Reach lubricant oil filler opening and lubricant oil and answer back, described lubricant oil filler opening is connected engine oil gallery through oil pipe respectively with the lubricating oil return mouth.
5. cylinder sleeve according to claim 1; It is characterized in that: with said active cover, the said outlet pipe of said suction tude, corresponding cylinder jacket wall respectively are provided with wideer 2 millimeters than suction tude, outlet pipe outer diameter; Grow the tracheae movable port of the long 2-4 millimeter of stroke that moves up and down than active cover; Active cover drives suction tude when supply becoming compression ratio, outlet pipe moves up and down in the tracheae movable port, in the described tracheae movable port outside, and the said outlet pipe of said suction tude top and followingly respectively be fixedly connected a seal steel plate; There is raised line the described seal steel plate left and right sides; Said cylinder sleeve outer wall corresponding with it is fluted, and described raised line moves up and down in recessed Cao, with the blanket gas cylinder sleeve.
6. active cover driving mechanism according to claim 1 is characterized in that: also can use stepping motor, described stepping motor output shaft is fixedly connected scroll bar.Utilize the motor clockwise and anticlockwise, drive active cover.
7. active cover according to claim 1 is characterized in that: be provided with 2-3 road seal ring in the active cover lower end, the upper end is provided with 1-2 road seal ring.
8. cylinder cap position transducer according to claim 1 is characterized in that; This position transducer is installed in the active cover top, the side of tooth bar.
9. cooling water channel according to claim 1 is characterized in that: in active cover, be provided with cooling water channel, and be connected but system of motor cold cloud with flexible pipe through water intake respectively with backwater mouth.
10. cylinder sleeve according to claim 1 is characterized in that: the cylinder jacket wall corresponding with active cover at cylinder sleeve is provided with lubricant oil filler opening and return opening, and described lubricant oil filler opening is connected with engine lubrication system through oil duct respectively with return opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103386734A CN102425500A (en) | 2011-11-01 | 2011-11-01 | Engine with a variable compression rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103386734A CN102425500A (en) | 2011-11-01 | 2011-11-01 | Engine with a variable compression rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102425500A true CN102425500A (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103386734A Pending CN102425500A (en) | 2011-11-01 | 2011-11-01 | Engine with a variable compression rate |
Country Status (1)
| Country | Link |
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| CN (1) | CN102425500A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141537A (en) * | 2013-05-10 | 2014-11-12 | 范伟俊 | Engine with variable compression ratio |
| CN105221274A (en) * | 2014-06-06 | 2016-01-06 | 上海汽车集团股份有限公司 | For the variable compression ratio of motor, variable compression ratio engine and automobile |
-
2011
- 2011-11-01 CN CN2011103386734A patent/CN102425500A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141537A (en) * | 2013-05-10 | 2014-11-12 | 范伟俊 | Engine with variable compression ratio |
| CN105221274A (en) * | 2014-06-06 | 2016-01-06 | 上海汽车集团股份有限公司 | For the variable compression ratio of motor, variable compression ratio engine and automobile |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120425 |