CN104141537A - Engine with variable compression ratio - Google Patents
Engine with variable compression ratio Download PDFInfo
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- CN104141537A CN104141537A CN201310172724.XA CN201310172724A CN104141537A CN 104141537 A CN104141537 A CN 104141537A CN 201310172724 A CN201310172724 A CN 201310172724A CN 104141537 A CN104141537 A CN 104141537A
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- cylinder head
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Abstract
The invention discloses an energy-saving engine. The engine comprises a cylinder body, a cylinder cover, a cylinder head cover, a cylinder barrel, a crankshaft, a connecting rod and a piston, and is characterized in that a flat bar is arranged at the top end of the cylinder cover; a cam is arranged above the flat bar and fixedly connected onto a cam shaft; oblique insection and a sliding wheel matched with the oblique insection are arranged at one end of the cam shaft; the sliding wheel is driven by a crankshaft gear at one end of the crankshaft through a transmission mechanism, and a relative angle between the cam and the crankshaft can be changed by the transmission mechanism; the upper edge periphery of the cylinder cover and the lower edge periphery of the cylinder head cover are connected through an upper rubber sleeve, and the lower edge periphery of the cylinder cover and the upper edge periphery of the cylinder body are connected through a lower rubber sleeve; and two pins are symmetrically arranged on the left lower surface and the right lower surface of the cylinder cover, sleeves glidingly matched with the pins are arranged on the left upper surface and the right upper surface of the cylinder body, and springs are arranged on the outer sides of the pins and the sleeves in a sleeving manner. According to the energy-saving engine, the compression ratio of the engine can be changed, the structure is simple, the control is facilitated, engine power can be effectively improved, and fuel economy is improved.
Description
Technical field
The present invention relates to a kind of motor, especially a kind of variable compression ratio engine.
Background technique
The compression ratio of traditional motor is generally fixed, Abroad in Recent Years starts the motor of the directional steering variable compression ratio of research, to adapt to the different requirements of motor to compression ratio when the different operating mode, motor in, during low-load, in order to improve the emission level of motor, need to adopt larger compression ratio, and when high load, adopt higher boost pressure, need to reduce compression ratio, can improve like this fuel oil and the output power of motor, the motor of the domestic variable compression ratio that also begins one's study at present, but most complex structure, difficulty of processing is high, be not easy to a large amount of operations.
Summary of the invention
The invention provides a kind of motor of variable compression ratio.
For achieving the above object, technological scheme of the present invention is:
The center on described cylinder head top is provided with planar strip, the top of planar strip is provided with cam, the bump of cam contacts with planar strip while rotating to below, cam is fixedly connected on camshaft, one end of described camshaft is set as oblique shape groove, tiltedly shape groove is driven by driving component by the crankshaft gear of bent axle one end, and described bent axle turns 2 weeks, and cam turns 1 week;
Described driving mechanism includes movable pulley, driven gear and several power transmissions wheel of the identical groove groove of the oblique shape groove of inner chamber and camshaft one end.Movable pulley is enclosed within one end of camshaft, wear in four holes of driven gear for four of movable pulley, be threaded the adjustable lever of shape through there being the support identical with its screw thread, one end is rotatably connected with movable pulley, the other end is fixedly connected with regulating wheel, support one end is connected with cylinder body, and the tooth of regulating wheel is connected with the worm screw of motor.
The upper of described cylinder head is connected by telescopic upper rubber sleeve along periphery with the lower of cylinder head cover along periphery, and the lower of cylinder head is connected by telescopic lower rubber sleeve along periphery with the upper of cylinder body along periphery;
Mian He bottom right, described cylinder head lower-left face is arranged with two pins, and Mian He upper right, the upper left face of described cylinder body is arranged with the sleeve being slidably matched with pin, and the outside cover of pin and sleeve has spring;
The lower end of described cylinder head and the upper end of cylinder barrel are fixed together.
Described adjusting gear passes through worm drive by motor.
In the casing wall of described cylinder head and cylinder barrel, be provided with the water pipe that can lead to cooling water, wherein water intake is located at a side of cylinder head, and water outlet is located at the opposite side of cylinder head.
The present invention, by the oblique shape groove of camshaft and coordinating of movable pulley, changes the relative angle between cam and bent axle, and while realizing igniting or burning, the spacing of cylinder head and piston becomes large or diminishes, thereby changes the compression ratio of motor.The present invention is simple in structure, and it is convenient to control, and can effectively improve the power of motor, its largest benefit be the motor of small displacement also can export can be comparable with large-duty engine power and moment of torsion, and oil consumption is still less, discharge lowlyer, can effectively improve fuel economy.
Accompanying drawing explanation
Fig. 1 is horizontal section structural representation of the present invention.
Fig. 2 is longitudinal profile structural representation of the present invention.
In figure, cylinder body 1, piston 2, connecting rod 3, crank 4 cylinder barrels 5, lower rubber sleeve, 6 relief openings 7, upper rubber sleeve 8, exhaust cam 9, exhaust cam shaft 10, planar strip 11, relief opening 19, water intake 20, spring 21, sleeve 22, water pipe 23, crankshaft gear 24, power transmission gear 25, driven gear 26, movable pulley 27, support 28, adjustable lever 29, adjusting gear 30, motor 31, worm screw 32, cylinder head 33, bent axle 34.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1 and Fig. 2, it is the horizontal and vertical cross-sectional view of the present invention, motor is cut open visible, comprised cylinder body 1, cylinder head 33 and be located at cylinder head 33 cylinder head cover 14 above, in cylinder body 1, be provided with cylinder barrel 5, piston 2, connecting rod 3, crank 4 and bent axle 34.
Center on cylinder head 33 tops is provided with planar strip 11, above planar strip 11, be provided with cam 13, cam 13 is fixedly connected on camshaft 12, in one end of camshaft 12, be provided with oblique shape groove, there are movable pulley 27. movable pulleies 27 of the identical groove cover of inner chamber and oblique shape groove by the crankshaft gear 24 of bent axle 34 one end, driven gear 26 drives by driving mechanism, the girth of driven gear 26 is designed to 2 times of crankshaft gear 24, described bent axle 24 turns 2 weeks, cam 13 turns 1 week, when the bump of cam 13 rotates to below, this bump contacts with planar strip 11 and withstands planar strip 11 downwards, can make cylinder head 33 move downward, the upper of cylinder head 33 is connected by telescopic upper rubber sleeve 8 along periphery with the lower of cylinder head cover 14 along periphery, and the lower of cylinder head 33 is connected by telescopic lower rubber sleeve 6 along periphery with the upper of cylinder body 1 along periphery, cylinder head 33 Mian He bottom right, lower-left faces are arranged with two pins 17, Mian He upper right, the upper left face of described cylinder body 1 is arranged with the sleeve 22 being slidably matched with pin 17, when cylinder head 33 moves up and down, pin 17 can slide vertically along sleeve 22 inner sides, in pin 17 and the outside of sleeve 22, overlaps flexible return unit spring 21, the upper end of the lower end of cylinder head 33 and cylinder barrel 5 is fixed together, cylinder barrel 5 can move up and down together with cylinder head 33, if motor has a plurality of cylinders, each cylinder head 33 cylinder barrel 5 is independently, adjacent two are not connected, only entering, press, do, when row's four-stroke is carried out simultaneously, adjacent two just can be connected, 5 pairs of each cylinder barrels should have a cylinder head 33, each cylinder head 33 is corresponding respectively has one to put rubber sleeve 8 and lower rubber sleeve 6, during motor operation, cylinder head 33 is bobs, so suction port 18, relief opening 7 and suction tude, between outlet pipe, there is one section of transition tube, this pipe can extend or shrink along beating of cylinder head 33.In the casing wall of cylinder head 33 and cylinder barrel 5, be provided with the water pipe 23 that can lead to cooling water, wherein water intake 20 is located at a side of cylinder head 33, and water outlet 19 is located at the opposite side of cylinder head 33.
The present invention is coordinated and realizes variable compression ratio with camshaft and bent axle by driving mechanism, and described driving mechanism comprises several power transmission gears 25, driven gear 26, movable pulley 27, support 28, adjustable lever 29, adjusting gear 30, motor 31, worm screw 32.Wherein the axle of several power transmission gears 25 is fixedly connected with cylinder body 1, and driven gear 26 is enclosed within on one end of camshaft 12, and driven gear 26 has four circular holes that pin is identical with movable pulley 27, and movable pulley 27 is enclosed within on camshaft 12, both mutual interlocks of oblique shape groove; Support 28 one end are connected with cylinder body 1, and the other end has the thread bush matching with screwed adjustable lever 29, and adjustable lever 29 is through thread bush, and one end is rotatably connected with movable pulley 27, and the other end is fixedly connected with adjusting gear 30; The worm screw 32 of motor 31 is joined with the tooth of adjusting gear 30.Motor 31 forwards drive worm screw 32 to rotate, and then drive regulating wheel 30 to rotate, adjustable lever 27 also rotates thereupon, because adjustable lever 29 is threaded self, when it rotates, self can be to front or rear movement, adjustable lever 29 moves forward and promotes movable pulley 27 and move forward, camshaft 12 slides forward some angles along oblique shape groove, and camshaft 12 angle corresponding with bent axle 34 changes, otherwise motor 31 reversions also can make camshaft 12 angle corresponding with bent axle 34 change.
The working principle of the present embodiment is:
As shown in Figure 1, bent axle 34 rotates, drive crankshaft gear 24 to rotate, thereby by power transmission gear 25, drive driven gear 26 and sliding gear 27, make camshaft 12 rotate 13 rotations of band moving cam, and bent axle 34 takes two turns, cam 13 turns around, be that motor completes four strokes, cam 13 revolves and turns around, thereby its transmission principle is identical with the spinning movement that bent axle 34 drive admission cam shafts 15 and exhaust cam shaft 10 rotations complete intake cam 16 and exhaust cam 9.
Aspirating stroke: intake cam 16 promotes IO Intake Valve Opens, gas enters from suction port 18, piston 2 moves to lower dead center from top dead center and sucks gas, the bump of this one-stroke cam 13 is rotated in the upside of cam 13, cylinder head 33 does not change with the relative position of admission cam shaft 15, so the control of 16 pairs of intake valves of intake cam is unaffected.
Compression stroke: IC Intake Valve Closes, piston 2 moves to top dead center from lower dead center, and the bump of this one-stroke cam 13 is rotated in the right side of cam 13, pressure when now the air of compression does not also arrive oil spout or igniting.
Expansion stroke, piston 2 moves downward from top dead center, when the front point of cam 13 bump lower edges withstands planar strip 11, cylinder head 33 moves downward together with cylinder barrel 5, pin 17 moves downward along sleeve 22 thereupon, lower rubber sleeve 6 is to lower compression, starting electrical machinery 31, worm screw 32 forwards of motor 31, and by adjusting gear 30, adjustable lever 29 and movable pulley 27 are moved to the left, camshaft 13 is slided forward along the oblique shape groove of movable pulley 27 inner chambers, thereby certain angle that caused cam 13 relative bent axle 34 multidirectional anticlockwises, some angles have been shifted to an earlier date, in this course, cam 13 rotates and makes the rear point of bump lower edge withstand planar strip 11, promoting cylinder head 33 and cylinder barrel 5 continues to move downward, and bent axle 34 does not rotate and makes piston 2 continue to remain on original position, thereby make the pitch smaller of cylinder head 33 and piston 2, in addition, said front point and rear point are comparatively speaking herein, front point is the point close to respect to the rear intersection point from bump lower edge and basic circle portion, also be with respect to rear from bump arc-shaped side forward terminal the point away from, bent axle 34 and cam 13 are rotated further, when the bump arc-shaped side of cam 13 has just rotated the center to planar strip 11, the compressed pressure and temperature of air in cylinder barrel 5 or mixed gas has reached the requirement of oil spout or igniting, now igniting or oil spout, the pressure producing promotes bent axle 34 actings by connecting rod 3 and crank 4, in this stroke, motor 31 forwards make the pitch smaller of cylinder head 33 and piston 2, thereby realized compression ratio, become large.Otherwise, when the rear point of cam 13 bump lower edges withstands planar strip 11, starting electrical machinery 31 reversions, cause that adjustable lever wheel 29 and movable pulley 27 have rotated certain angle to the right more, have delayed some angles, in this course, cam 13 rotates and makes the front point of bump lower edge withstand planar strip 11, make cylinder head 33 and cylinder barrel 5 certain distance that moved upward, and bent axle 34 does not rotate and makes piston 2 continue to remain on original position, thereby make cylinder head 33 and the spacing of piston 2 become large; Bent axle 34 and cam 13 are rotated further, when the bump arc-shaped side of cam 13 firm rotated the center to planar strip 11, the compressed pressure and temperature of air in cylinder barrel 5 or mixed gas has reached the requirement of oil spout or igniting, now igniting or oil spout, the pressure producing promotes bent axle 34 actings by connecting rod 3 and crank 4, in this stroke, motor 31 reversions make cylinder head 33 and the spacing of piston 2 become large, thereby realized compression ratio, diminish.Meanwhile, cylinder barrel 5 and cylinder head 33 are subject to cam 13 and promote operation one segment distance downwards, and during burning, connecting rod 3 has a certain degree with crank 4 shapes, and the transmission of exerting all one's strength is more scientific.
Exhaust stroke; , piston 2 moves to top dead center from lower dead center, and oneself rotates the bump of cam 13 to its left side, cylinder head 33 resets under the effect of spring 21, and pin 17 is thereupon along upwards operation of sleeve 22, and upper rubber sleeve 8 upwards compresses, exhaust cam 9 promotes exhaust valve and opens, and remainder of exhaust gas is discharged from relief opening 7.
Motor 31 is controlled by vehicle-mounted computer, when the little load of automobile, adopt high compression ratio, during heavy load, adopt low compression ratio and be equipped with pressurized machine and carry out supercharging, make the motor of small displacement also can export can be comparable with large-duty engine power and moment of torsion, reduce discharge and improve fuel economy.
As long as the four-stroke of motor and inlet and outlet door are done to suitable adjustment, cam turns around or two circles also to make bent axle turn around.
Claims (3)
1. a variable compression ratio engine, comprises cylinder body, cylinder head, cylinder head cover, cylinder barrel, bent axle, connecting rod and piston, it is characterized in that:
The center on described cylinder head (33) top is provided with planar strip 11, the top of planar strip 11 is provided with cam (13), the bump of cam (13) contacts with planar strip 11 while rotating to below, cam (13) is fixedly connected on camshaft (12), one end of described camshaft (12) is provided with oblique shape groove, with the identical movable pulley 27 of this oblique shape groove, be enclosed within on the camshaft 12 of oblique shape groove, movable pulley 27 is driven by driving component by the crankshaft gear of bent axle 34 one end, described bent axle (34) turns 2 weeks, and cam (13) turns 1 week;
Described driving mechanism comprises power transmission gear 25, driven gear 26, sliding gear 27, wherein the axle of power transmission gear 25 is connected with cylinder body 1, driven gear 26 is enclosed within on camshaft 12, movable pulley 27 has the circular hole matching with 27 4 pin of movable pulley, the inner chamber of movable pulley 27 one end has the oblique shape groove matching with the oblique shape groove of camshaft 12, support 28 one end are connected with cylinder body 1, the other end has the screw thread of screw thread and adjustable lever 29 to coincide, adjustable lever 29 is rotatably connected with movable pulley 28 through support 28 one end, one end is fixedly connected with adjusting gear 30, worm screw 32 phases of adjusting gear 30 and motor 31,
The upper of described cylinder head (33) is connected by telescopic upper rubber sleeve (8) along periphery with the lower of cylinder head cover (14) along periphery, and the lower of cylinder head (33) is connected by telescopic lower rubber sleeve (6) along periphery with the upper of cylinder body (1) along periphery;
Mian He bottom right, described cylinder head (33) lower-left face is arranged with two pins (17), Mian He upper right, the upper left face of described cylinder body (1) is arranged with the sleeve (22) being slidably matched with pin (17), and pin (17) has spring (21) with the outside cover of sleeve (22);
The upper end of the lower end of described cylinder head (33) and cylinder barrel (5) is fixed together.
2. variable compression ratio engine according to claim 1, is characterized in that:
Described adjusting gear 30 is driven by worm screw 32 by motor (31).
3. variable compression ratio engine according to claim 1, is characterized in that:
In the casing wall of described cylinder head (33) and cylinder barrel (5), be provided with the water pipe (23) that can lead to cooling water, wherein water intake (18) is located at a side of cylinder head (33), and water outlet (19) is located at the opposite side of cylinder head (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172724.XA CN104141537A (en) | 2013-05-10 | 2013-05-10 | Engine with variable compression ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172724.XA CN104141537A (en) | 2013-05-10 | 2013-05-10 | Engine with variable compression ratio |
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| Publication Number | Publication Date |
|---|---|
| CN104141537A true CN104141537A (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310172724.XA Pending CN104141537A (en) | 2013-05-10 | 2013-05-10 | Engine with variable compression ratio |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107709733A (en) * | 2015-06-02 | 2018-02-16 | 日产自动车株式会社 | The variable compression ratio of internal combustion engine |
| CN112664335A (en) * | 2019-10-16 | 2021-04-16 | 上海汽车集团股份有限公司 | Gasoline engine combustion system and method for matching tumble flow strength of gasoline engine under different working conditions |
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| CN1434194A (en) * | 2002-01-22 | 2003-08-06 | 刘峰 | Energy saving method for internal combustion engine |
| CN101131125A (en) * | 2007-09-28 | 2008-02-27 | 靳宇男 | Load responding engine |
| CN102278202A (en) * | 2011-07-10 | 2011-12-14 | 王睿 | Novel efficient energy-saving internal combustion engine |
| CN102425500A (en) * | 2011-11-01 | 2012-04-25 | 李文元 | Variable compression ratio engine |
| JP2012251450A (en) * | 2011-06-01 | 2012-12-20 | Mineo Kitajima | Variable compression ratio internal combustion engine |
| CN102852581A (en) * | 2012-09-06 | 2013-01-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Variable valve timing device |
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2013
- 2013-05-10 CN CN201310172724.XA patent/CN104141537A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434194A (en) * | 2002-01-22 | 2003-08-06 | 刘峰 | Energy saving method for internal combustion engine |
| CN101131125A (en) * | 2007-09-28 | 2008-02-27 | 靳宇男 | Load responding engine |
| JP2012251450A (en) * | 2011-06-01 | 2012-12-20 | Mineo Kitajima | Variable compression ratio internal combustion engine |
| CN102278202A (en) * | 2011-07-10 | 2011-12-14 | 王睿 | Novel efficient energy-saving internal combustion engine |
| CN102425500A (en) * | 2011-11-01 | 2012-04-25 | 李文元 | Variable compression ratio engine |
| CN102852581A (en) * | 2012-09-06 | 2013-01-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Variable valve timing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107709733A (en) * | 2015-06-02 | 2018-02-16 | 日产自动车株式会社 | The variable compression ratio of internal combustion engine |
| CN112664335A (en) * | 2019-10-16 | 2021-04-16 | 上海汽车集团股份有限公司 | Gasoline engine combustion system and method for matching tumble flow strength of gasoline engine under different working conditions |
| CN112664335B (en) * | 2019-10-16 | 2023-09-29 | 上海汽车集团股份有限公司 | Gasoline engine combustion system and method for matching rolling flow intensity of gasoline engine under different working conditions |
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| DD01 | Delivery of document by public notice |
Addressee: Fan Weijun Document name: Notification of Passing Examination on Formalities Addressee: Fan Weijun Document name: Notification of Patent Invention Entering into Substantive Examination Stage |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141112 |
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| RJ01 | Rejection of invention patent application after publication |