CN103670579B - A kind of engine air valve lift continuous setup mechanism - Google Patents
A kind of engine air valve lift continuous setup mechanism Download PDFInfo
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- CN103670579B CN103670579B CN201310620031.2A CN201310620031A CN103670579B CN 103670579 B CN103670579 B CN 103670579B CN 201310620031 A CN201310620031 A CN 201310620031A CN 103670579 B CN103670579 B CN 103670579B
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Abstract
A kind of engine air valve lift continuous setup mechanism, for solving the matching problem of engine air valve lift and engine operation condition.It comprises regulating arm assembly, swing arm, link arm, rocking arm, eccentric shaft and motor, described regulating arm assembly by adjusting pin and link arm hinged, described link arm and swing arm are fixed and are assembled, described swing arm and rocking arm are equipped with, described rocking arm two ends are assembled with valve and hydraulic tappet respectively, described eccentric shaft is connected with motor output shaft, eccentric shaft arranges one group of eccentric wheel, its specialization is: it is also provided with one group of eccentric shaft regulator plate, described eccentric shaft regulator plate is equipped with by to-and-fro motion support and eccentric shaft, eccentric shaft regulator plate arranges the first working surface coordinated with eccentric wheel and the second working surface coordinated with regulating arm assembly, described second working surface is circular arc working surface.The present invention had both met the requirement of Under Different Work Condition of Engine air inflow, additionally reduced amount of parts, reduced component manufacture cost.
Description
Technical field
The present invention relates to a kind of motor car engine, especially a kind of valve lift continuous setup mechanism of motor car engine gas distribution system, belongs to technical field of internal combustion engines.
Background technique
The valve lift of conventional engines gas distribution system is changeless, the design of valve lift generally with air inflow needed for high engine speeds high load working condition for foundation, the outer profile curve form fit of it and valve cam.Because motor there are differences the demand of air inflow under different operating conditions, valve lift corresponding under high speed high load working condition is large, the valve lift that low speed small load condition is corresponding is little, therefore, there is excessive unlatching phenomenon in conventional engines valve under slow-speed of revolution small load condition, although petrol engine can realize the adjustment to air inflow by the aperture reducing closure, but the throttling action of closure can produce pumping loss, the mechanical loss work that excessive valve lift causes simultaneously increases, and reduces the working efficiency of motor.
For solving the problem, internal-combustion engine engineering teachers are devoted to the research of lift range variable technology, inquire into the method being controlled air inflow under the different operating conditions of motor by the change of valve opening, and the early stage adjustment of lift range variable technology to valve lift is discontinuous, the sudden change of valve lift causes the continuity of system poor, is difficult to fully to meet the requirement of air inflow under different operating mode.Along with the appearance of continuously variable valve lift technology, air input of engine by air and its operating conditions matching problem are resolved, and improve the working efficiency of motor.Such as, application number be 200480037308.8 Chinese patent disclose a kind of variable valve actuator for air, this variable valve actuator for air is the lift amount of the air door body that can change internal-combustion engine and the variable valve actuator for air of working angle, and it has: the first cam rotated along with the rotation of crank; Transferring elements, has the second cam, the rotation synchronous hunting of this second cam and the first cam, and by the force transmission of the first cam to air door body; Be adjusted to the Control Shaft of the rotational position of regulation; Change the hunting range of transferring elements according to the rotational position of Control Shaft, and change the lift amount of air door body and the changeable mechanism of working angle; Sky is moved spring, and transferring elements is exerted a force to the first cam, thus maintains the connection between transferring elements and the first cam; And secondary spring, revolt the active force of empty spring of moving and exert a force to transferring elements.The technological scheme of this patent can realize the continuous setup of valve lift, reaches the object reducing valve lift regulating mechanism load simultaneously, but due to its first cam and transferring elements be linear contact lay mode, there is the problem that wearing and tearing between part are large; This variable valve actuator for air amount of parts is many simultaneously, complex structure, not only increase manufacturing process difficulty and the cost of component, and mechanism's reliability of operation not easily ensures.
Summary of the invention
The object of the invention is to the drawback for prior art, provide one can meet the requirement of Under Different Work Condition of Engine air inflow, amount of parts can be reduced again, reduce component manufacture cost, reliable engine air valve lift continuous setup mechanism.
Problem of the present invention realizes with following technical proposals:
A kind of engine air valve lift continuous setup mechanism, it comprises regulating arm assembly, swing arm, link arm, rocking arm, eccentric shaft and motor, described regulating arm assembly by adjusting pin and link arm hinged, described link arm and swing arm are fixed and are assembled, described swing arm and rocking arm are equipped with, described rocking arm two ends are assembled with valve and hydraulic tappet respectively, described eccentric shaft is connected with motor output shaft, eccentric shaft arranges one group of eccentric wheel, its specialization is: it is also provided with one group of eccentric shaft regulator plate, described eccentric shaft regulator plate is equipped with by to-and-fro motion support and eccentric shaft, eccentric shaft regulator plate arranges the first working surface coordinated with eccentric wheel and the second working surface coordinated with regulating arm assembly, described second working surface is circular arc working surface.
Above-mentioned engine air valve lift continuous setup mechanism, described eccentric wheel and eccentric shaft regulator plate quantity are mated with engine cylinder number.
Above-mentioned engine air valve lift continuous setup mechanism, described regulating arm assembly comprises regulating arm body, first and regulates roller and second to regulate roller, described regulating arm body upper part arranges the regulating arm hinging hole equipped with adjusting pin, described first regulates roller to be arranged on the middle part of regulating arm body, it mates with the second working surface of eccentric shaft regulator plate, described second regulates roller to be arranged on the bottom of regulating arm body, and regulating arm assembly regulates roller that the thrust of eccentric shaft regulator plate is passed to swing arm by second.
Above-mentioned engine air valve lift continuous setup mechanism, described swing arm is arranged symmetrically in the both sides of link arm, the swing arm sleeve pipe equipped with link arm is set in swing arm upper end, swing arm and link arm are fixed on the same axis, they can rotate around the center of this stationary axle, and limit its swing position by swing arm Returnning spring, the arc-shaped curved surface equipped with rocking arm is set bottom swing arm, connected by supporting rib between described sleeve pipe and arc-shaped curved surface, the outer side surface of described supporting rib and second of regulating arm assembly regulates roller to mate, one end of described arc-shaped curved surface arranges recessed poor structure, described swing arm Returnning spring is fixed on the bearing support of engine cam, its free end is installed in swing arm groove.
Above-mentioned engine air valve lift continuous setup mechanism, described link arm is made up of link arm sleeve pipe and link arm fin, described link arm fin comprises left and right two-part, they are all fixedly assemblied on link arm sleeve pipe, arrange link arm hinging hole in link arm fin upper end, described link arm hinging hole and adjusting pin are equipped with.
Above-mentioned engine air valve lift continuous setup mechanism, is provided with rocker-arm roller in the middle part of described rocking arm, and the arc-shaped curved surface bottom described rocker-arm roller and swing arm is equipped with.
Above-mentioned engine air valve lift continuous setup mechanism, it is also provided with mediate roller, and described mediate roller is contained in outside adjusting pin by bearing housing, and in the middle of two, the left and right link arm fin that it is positioned at link arm, mediate roller is mated with engine cam.
Above-mentioned engine air valve lift continuous setup mechanism, described motor is arranged on engine cylinder-body.
Eccentric shaft of the present invention is driven by motor and rotates, the eccentric wheel on eccentric shaft is made to promote eccentric shaft regulator plate periodic reverse motion, when eccentric wheel promotion eccentric shaft regulator plate moves to camshaft direction, transmission of power is regulated roller to first of regulating arm assembly by second working surface (i.e. circular arc working surface) of eccentric shaft regulator plate, regulating arm assembly is rotated clockwise around adjusting pin, regulate roller to promote swing arm by second of regulating arm assembly to rotate clockwise around swing arm stationary axle, arc-shaped curved surface bottom swing arm drives rocker-arm roller to rotate clockwise, thus the valve promoting one end moves downward, make valve when opening state and the distance of valve seat increases, namely the aperture of valve is increased, ensure that the air inflow of motor under high speed high load working condition, after eccentric wheel turns over several angle, second working surface of eccentric shaft regulator plate regulates the thrust of roller to disappear to regulating first of arm assembly, now swing arm Returnning spring promotion swing arm rotates counterclockwise around swing arm stationary axle, regulating arm assembly is rotated counterclockwise around adjusting pin, regulating arm assembly first is kept to regulate the contact condition of roller and eccentric shaft regulator plate second working surface, arc-shaped curved surface bottom swing arm simultaneously drives rocker-arm roller to rotate counterclockwise, valve resets under the elastic force effect of valve spring, make valve when opening state and the distance of valve seat reduces, namely the aperture of valve is reduced, air input of engine by air and low speed small load condition are matched.The present invention is in above-mentioned working procedure, first of regulating arm assembly regulates roller and eccentric shaft regulator plate to remain contact condition, because eccentric shaft regulator plate have employed circular arc working surface, the technological scheme being linear contact lay mode with the first cam in prior art and transferring elements compares, alleviate the wearing and tearing between the first adjustment roller and eccentric shaft regulator plate, improve the working life of component; Swing arm is optimized for split left and right formula structure by the present invention, and what adjust roller by swing arm outside-supporting muscle and regulating arm second coordinates transferring power, not only makes swing arm structure simplify, and reduces the technology difficulty that swing arm manufactures, and is convenient to the assembling of component; The present invention adopts motor straight tape splicing to move the driving mode of eccentric shaft, decreases the mechanical loss of transmission of power, improves the reliability of transmission of power.In a word, the present invention had both met the requirement of Under Different Work Condition of Engine air inflow, additionally reduced amount of parts, reduced the manufacture cost of component.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is detonation configuration schematic diagram of the present invention;
Fig. 3 is eccentric shaft regulator plate structural representation;
Fig. 4 is regulating arm structural representation;
Fig. 5 is swing arm structure schematic diagram;
Fig. 6 is link arm structural representation;
Fig. 7 is regulating arm, swing arm, link arm, rocking arm, mediate roller and adjusting pin assembly relation schematic diagram;
Fig. 8, Fig. 9 are working procedure schematic diagram of the present invention.
In figure, each list of reference numerals is: 1, engine cam, 2, adjusting pin, 3, mediate roller, 4, eccentric shaft, 5, eccentric shaft regulator plate, 5-1, to-and-fro motion support, 5-2, first working surface, 5-3, second working surface, 6, rocking arm, 6-1, rocker-arm roller, 7, valve, 8, hydraulic tappet, 9, regulating arm assembly, 9-1, regulating arm body, 9-2, first regulates roller, 9-3, second regulates roller, 9-4, regulating arm hinging hole, 10, swing arm, 10-1, swing arm sleeve pipe, 10-2, arc-shaped curved surface, 10-3, groove, 10-4, supporting rib, 11, link arm, 11-1, link arm sleeve pipe, 11-2, link arm fin, 11-3, link arm hinging hole, 12, swing arm Returnning spring, 13, motor.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, the present invention includes regulating arm assembly 9, swing arm 10, link arm 11, rocking arm 6, eccentric shaft 4 and motor 13, described regulating arm assembly 9 by adjusting pin 2 and link arm 11 hinged, described link arm 11 assembles with swing arm 10 is fixing, described swing arm 10 is equipped with rocking arm 6, described rocking arm 6 two ends are assembled with valve 7 and hydraulic tappet 8 respectively, described eccentric shaft 4 is connected with the output shaft of motor 13, described motor 13 is arranged on engine cylinder-body, eccentric shaft 4 arranges one group of eccentric wheel, its specialization is: it is also provided with one group of eccentric shaft regulator plate 5, described eccentric shaft regulator plate 5 is equipped with by to-and-fro motion support 5-1 and eccentric shaft 4, eccentric shaft regulator plate 5 arranges the first working surface 5-2 coordinated with eccentric wheel and the second working surface 5-3 coordinated with regulating arm assembly 9, described second working surface 5-3 is circular arc working surface, the quantity of described eccentric wheel and eccentric shaft regulator plate 5 is mated with engine cylinder number.
Referring to Fig. 1, Fig. 4, Fig. 7, regulating arm assembly 9 of the present invention comprises regulating arm body 9-1, first and regulates roller 9-2 and second to regulate roller 9-3, described regulating arm body 9-1 top arranges the regulating arm hinging hole 9-4 equipped with adjusting pin 2, described first regulates roller 9-2 to be arranged on the middle part of regulating arm body 9-1, it mates with the second working surface 5-3 of eccentric shaft regulator plate 5, described second regulates roller 9-3 to be arranged on the bottom of regulating arm body 9-1, and regulating arm assembly 9 regulates roller 9-3 that the thrust of eccentric shaft regulator plate 5 is passed to swing arm 10 by second.
Referring to Fig. 1, Fig. 5, Fig. 7, swing arm 10 of the present invention is arranged symmetrically in the both sides of link arm 11, the swing arm sleeve pipe 10-1 equipped with link arm 11 is set in swing arm 10 upper end, swing arm 10 and link arm 11 are fixed on the same axis, they can rotate around the center of this stationary axle, and limit its swing position by swing arm Returnning spring 12, the arc-shaped curved surface 10-2 equipped with rocking arm 6 is set bottom swing arm 10, connected by supporting rib 10-4 between described swing arm sleeve pipe 10-1 and arc-shaped curved surface 10-2, the outer side surface of described supporting rib 10-4 and second of regulating arm assembly 9 regulates roller 9-3 to mate, one end of described arc-shaped curved surface 10-2 arranges recessed poor 10-3 structure, described swing arm Returnning spring 12 is fixed on the bearing support of engine cam 1, its free end is installed in swing arm groove 10-3.
Referring to Fig. 1, Fig. 6, Fig. 7, link arm 11 of the present invention is made up of link arm sleeve pipe 11-1 and link arm fin 11-2, described link arm fin 11-2 comprises left and right two-part, they are all fixedly assemblied on link arm sleeve pipe 11-1, arrange link arm hinging hole 11-3 in link arm fin 11-1 upper end, described link arm hinging hole 11-3 and adjusting pin 2 are equipped with.
Referring to Fig. 1, Fig. 7, be provided with rocker-arm roller 6-1 in the middle part of rocking arm 6 of the present invention, bottom described rocker-arm roller 6-1 and swing arm, arc-shaped curved surface 10-2 is equipped with.
Referring to Fig. 1, Fig. 2, Fig. 7, the present invention is also provided with mediate roller 3, and described mediate roller 3 is contained in outside adjusting pin 2 by bearing housing, and in the middle of two, the left and right link arm fin 11-2 that it is positioned at link arm 11, mediate roller 3 is mated with engine cam 1.
Referring to Fig. 8, Fig. 9, eccentric shaft 4 of the present invention is driven by motor 13 and rotates, the eccentric wheel on eccentric shaft 3 is made to promote eccentric shaft regulator plate 5 periodic reverse motion, when eccentric wheel promotion eccentric shaft regulator plate 5 moves to engine cam 1 direction, second working surface 5-3(of eccentric shaft regulator plate 5 and circular arc working surface) transmission of power is regulated roller 9-2 to first of regulating arm assembly 9, regulating arm assembly 9 is rotated clockwise around adjusting pin 2, regulate roller 9-3 to promote swing arm 10 by second of regulating arm assembly 9 to rotate clockwise around swing arm stationary axle, arc-shaped curved surface 10-2 bottom swing arm 10 drives rocker-arm roller 6-1 to rotate clockwise, thus the valve 7 promoting rocking arm 6 one end moves downward, make valve 7 when opening state and the distance of valve seat increases (H2 > H1), namely the aperture of valve 7 is increased, ensure that the air inflow of motor under high speed high load working condition, after eccentric wheel turns over several angle, second working surface 5-3(circular arc working surface of eccentric shaft regulator plate 5) to regulating first of arm assembly 9 to regulate the thrust of roller 9-2 to disappear, now swing arm Returnning spring 12 promotes swing arm 10 and rotates counterclockwise around swing arm stationary axle, regulating arm assembly 9 is rotated counterclockwise around adjusting pin 2, keep regulating arm assembly 9 first to regulate roller 9-2 and eccentric shaft regulator plate 5 second working surface 5-3(circular arc working surface) contact condition, arc-shaped curved surface 10-2 bottom swing arm 10 simultaneously drives rocker-arm roller 6-1 to rotate counterclockwise, valve 7 resets under the elastic force effect of valve spring, make valve when opening state and the distance of valve seat reduces (H1 < H2), namely the aperture of valve is reduced, air input of engine by air and low speed small load condition are matched.
Claims (8)
1. an engine air valve lift continuous setup mechanism, it comprises regulating arm assembly (9), swing arm (10), link arm (11), rocking arm (6), eccentric shaft (4) and motor (13), described regulating arm assembly (9) by adjusting pin (2) and link arm (11) hinged, described link arm (11) assembles with swing arm (10) is fixing, described swing arm (10) is equipped with rocking arm (6), described rocking arm (6) two ends are assembled with valve (7) and hydraulic tappet (8) respectively, described eccentric shaft (4) is connected with the output shaft of motor (13), eccentric shaft (4) arranges one group of eccentric wheel, it is characterized in that, described engine air valve lift continuous setup mechanism is also provided with one group of eccentric shaft regulator plate (5), described eccentric shaft regulator plate (5) is equipped with by to-and-fro motion support (5-1) and eccentric shaft (4), at eccentric shaft regulator plate (5), the first working surface (5-2) coordinated with eccentric wheel and the second working surface (5-3) coordinated with regulating arm assembly (9) are above set, described second working surface (5-3) is circular arc working surface.
2. a kind of engine air valve lift continuous setup mechanism according to claim 1, it is characterized in that, the quantity of described eccentric wheel and eccentric shaft regulator plate (5) is mated with engine cylinder number.
3. a kind of engine air valve lift continuous setup mechanism according to claim 2, it is characterized in that, described regulating arm assembly (9) comprises regulating arm body (9-1), first regulates roller (9-2) and second to regulate roller (9-3), described regulating arm body (9-1) top arranges the regulating arm hinging hole (9-4) equipped with adjusting pin (2), described first regulates roller (9-2) to be arranged on the middle part of regulating arm body (9-1), first regulates roller to mate with second working surface (5-3) of eccentric shaft regulator plate (5), described second regulates roller (9-3) to be arranged on the bottom of regulating arm body (9-1), regulating arm assembly (9) regulates roller (9-3) that the thrust of eccentric shaft regulator plate (5) is passed to swing arm (10) by second.
4. a kind of engine air valve lift continuous setup mechanism according to claim 1 or 2 or 3, it is characterized in that, described swing arm (10) is arranged symmetrically in the both sides of link arm (11), the swing arm sleeve pipe (10-1) equipped with link arm (11) is set in swing arm (10) upper end, swing arm (10) and link arm (11) are fixed on the same axis, swing arm and link arm rotate around the center of this stationary axle, and limit its swing position by swing arm Returnning spring (12), in swing arm (10) bottom, the arc-shaped curved surface (10-2) equipped with rocking arm (6) is set, connected by supporting rib (10-4) between described swing arm sleeve pipe (10-1) and arc-shaped curved surface (10-2), outer side surface and second of the regulating arm assembly (9) of described supporting rib (10-4) regulate roller (9-3) to mate, one end of described arc-shaped curved surface (10-2) arranges recessed grain (10-3) structure, described swing arm Returnning spring (12) is fixed on the bearing support of engine cam (1), its free end is installed in swing arm groove (10-3).
5. a kind of engine air valve lift continuous setup mechanism according to claim 4, it is characterized in that, described link arm (11) is made up of link arm sleeve pipe (11-1) and link arm fin (11-2), described link arm fin (11-2) comprises left and right two-part, link arm fin is fixedly assemblied on link arm sleeve pipe (11-1), arrange link arm hinging hole (11-3) in link arm fin (11-1) upper end, described link arm hinging hole (11-3) is equipped with adjusting pin (2).
6. a kind of engine air valve lift continuous setup mechanism according to claim 5, is characterized in that, described rocking arm (6) middle part is provided with rocker-arm roller (6-1), and bottom described rocker-arm roller (6-1) and swing arm, arc-shaped curved surface (10-2) is equipped with.
7. a kind of engine air valve lift continuous setup mechanism according to claim 1 or 6, it is characterized in that, also be provided with mediate roller (3), described mediate roller (3) is contained in adjusting pin (2) outside by bearing housing, mediate roller is positioned in the middle of two, the left and right link arm fin (11-2) of link arm (11), and mediate roller (3) is mated with engine cam (1).
8. a kind of engine air valve lift continuous setup mechanism according to claim 7, it is characterized in that, described motor (13) is arranged on engine cylinder-body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310620031.2A CN103670579B (en) | 2013-11-29 | 2013-11-29 | A kind of engine air valve lift continuous setup mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310620031.2A CN103670579B (en) | 2013-11-29 | 2013-11-29 | A kind of engine air valve lift continuous setup mechanism |
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| CN103670579A CN103670579A (en) | 2014-03-26 |
| CN103670579B true CN103670579B (en) | 2016-01-20 |
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| CN201310620031.2A Active CN103670579B (en) | 2013-11-29 | 2013-11-29 | A kind of engine air valve lift continuous setup mechanism |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832236B (en) * | 2014-12-18 | 2017-04-05 | 北汽福田汽车股份有限公司 | Engine valve pre-operation device |
| CN105065598A (en) * | 2015-07-07 | 2015-11-18 | 深圳市白狐工业设计有限公司 | Reciprocating intermittent motion mechanism |
| CN105507979A (en) * | 2015-12-17 | 2016-04-20 | 广州汽车集团股份有限公司 | Continuous variable valve lift system and automobile |
| CN109779715B (en) * | 2019-02-26 | 2020-01-17 | 浙江大学 | Variable gas distribution timing-lift device and control method thereof |
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| JPS55137305A (en) * | 1979-04-13 | 1980-10-27 | Nissan Motor Co Ltd | Valve lift for internal combustion engine |
| CA2486430A1 (en) * | 2002-05-17 | 2003-11-27 | Yamaha Hatsudoki Kabushiki Kaisha | Engine valve driver |
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| US8291874B2 (en) * | 2008-12-05 | 2012-10-23 | Hyundai Motor Company | Apparatus for adjusting deviation of engine and continuously variable valve lift device including the same |
| JP5188998B2 (en) * | 2009-01-23 | 2013-04-24 | 日立オートモティブシステムズ株式会社 | Variable valve operating device for internal combustion engine |
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| US6584943B1 (en) * | 2002-09-18 | 2003-07-01 | Daimlerchrysler Corporation | Variable compound rocker system for push rod and overhead camshaft engines |
| CN1914408A (en) * | 2003-12-18 | 2007-02-14 | 丰田自动车株式会社 | Variable valve mechanism |
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