CN204082245U - The electrodeless variable valve gear of a kind of motor - Google Patents
The electrodeless variable valve gear of a kind of motor Download PDFInfo
- Publication number
- CN204082245U CN204082245U CN201420550976.1U CN201420550976U CN204082245U CN 204082245 U CN204082245 U CN 204082245U CN 201420550976 U CN201420550976 U CN 201420550976U CN 204082245 U CN204082245 U CN 204082245U
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- valve
- rocker
- door body
- arm support
- motor
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Abstract
The utility model discloses the electrodeless variable valve gear of a kind of motor, comprise and be assemblied in variable valve actuator for air in cylinder head and distribution device, described variable valve actuator for air comprises valve rocker, rocker arm support and stepper motor, described distribution device comprises air door body and camshaft, described camshaft is provided with cam, described valve rocker is under the drive of rocker arm support, the position of the fulcrum of valve rocker and cam changes, change the torque arm length on valve rocker between fulcrum and air door body, air door body is changed along the stroke of its axially lower slider, change engine air valve lift and timing.The utility model achieves the stepless control to valve timing and valve lift by the acting in conjunction of electronic control and mechanical structure simultaneously, overcome prior art not by same set of mechanism electrodeless control valve timing and valve lift simultaneously, and can well incorporate in motor, air inlet during accurate realization rotating speed any to motor controls, and adaptability is extremely strong.
Description
Technical field
The utility model relates to technical field of engines, especially relates to a kind of electrodeless variable valve gear for motor.
Background technique
Piston four stroke engine is all completed by air inlet, compression, acting, exhaust 4 strokes, and what we paid close attention to is the problem of valve opening degree to engine charge.The basic principle of cylinder intake is " negative pressure ", and the gas pressure intensity namely inside and outside cylinder is poor.Desirable valve lift rule should adjust in time according to engine operating condition, has enough flexibilities.During time of engine low speed, airspeed is comparatively slow, and inertial flow is less, and valve lift is crossed conference and caused fresh air in cylinder to flow backwards; During high speed, airspeed is very fast, and inertial flow is comparatively large, and too small valve lift can increase flow resistance, is unfavorable for the perfect of intake process equally.Often, engineers should take into account the torque characteristics of motor in low velocity zone, and want again the power characteristic of squeezing high velocity, can only take the thinking of " compromise ", high engine speeds there is not power in the end, and low speed lacks moment of torsion.
So under these circumstances, just need the technology that a kind of engine charge regulates, this technology can ensure low speed and large torque, can obtain high-speed high-power again, is one breaks through greatly motor.
But the VVT that available engine adopts, VVT-i, VTEC changeable air valve controls technology mainly in the control to valve timing, and huge valve lift control technique is affected for engine charging efficiency seldom relate to, valve lift when only VTEC can realize high engine speeds and low cruise by the mode switching size two cams controls, but narrow limitation is also very large, and it is natively very general only to describe the operating conditions of motor by " at a high speed " " low speed ", therefore prior art is difficult to ensure can there be corresponding valve opening when any rotating speed in engine timing work, realize step-less adjustment while valve timing and valve lift, the electrodeless control of valve lift has become the common pursuit of hands of automotive engineers.
Model utility content
Goal of the invention of the present utility model is: for above-mentioned Problems existing, there is provided a kind of structure simple, extensively can adopt on available engine, and the electrodeless variable valve gear of motor to engine valve timing and the electrodeless control of valve lift can be realized simultaneously.
The technical solution of the utility model is achieved in that the electrodeless variable valve gear of a kind of motor, comprise variable valve actuator for air and distribution device, described variable valve actuator for air and distribution device are all assemblied in cylinder head, it is characterized in that: described variable valve actuator for air comprises valve rocker, rocker arm support and stepper motor, described rocker arm support bottom and the slide rail be fixedly installed on cylinder head are slidably connected, described stepper motor is connected with rocker arm support by driving mechanism, one end of described rocker arm support and valve rocker is hinged, described distribution device comprises air door body and camshaft, described air door body is connected with hydraulic tappet under the effect of valve spring, described hydraulic tappet upper end portion is connected with the other end of valve rocker, described camshaft and cylinder head are rotationally connected, described camshaft is provided with cam, described cam and camshaft synchronous axial system, described cam contacts with in the middle part of valve rocker, described valve rocker is under the drive of rocker arm support, the contacting points position of valve rocker and cam changes, change the torque arm length on valve rocker between fulcrum and air door body, make described air door body along the stroke alteration of its axially lower slider, change engine air valve lift and timing.
The electrodeless variable valve gear of motor described in the utility model, pulley is provided with in its notch in the middle part of described valve rocker, described pulley is rotationally connected by rolling bearing and the pulley spindle be arranged on valve rocker, described cam and pulley circumference contact, when described cam axle, cam contacts with the diverse location on pulley circumferential surface.
The electrodeless variable valve gear of motor described in the utility model, described in it, hydraulic tappet upper end is provided with steel ball, described valve rocker lower end surface is provided with chute, described steel ball correspondence is arranged in chute and also contacts with it, when engine speed changes, described driving mechanism promotes rocker arm support and moves, the position of the fulcrum of cam and pulley is changed, the steel ball be connected with hydraulic tappet slides along the length direction of chute, and simultaneously air door body changes along the stroke of its axially lower slider.
The electrodeless variable valve gear of motor described in the utility model, one end of valve rocker described in it is connected with the pitman arm shaft be arranged on rocker arm support by rocker arm support bearing, and one end of described valve rocker can be rotated around pitman arm shaft.
The electrodeless variable valve gear of motor described in the utility model, it is socketed with valve guide bushing in the middle part of described air door body, and described air door body can slide up and down relative to valve guide bushing.
The electrodeless variable valve gear of motor described in the utility model, driving mechanism described in it comprises worm screw, worm gear and drive screw, described worm screw is connected with the clutch end of stepper motor, one end of described drive screw is coaxially fixedly connected with worm gear, its the other end passes the tapped hole of rocker arm support and is engaged with, described worm and wheel engagement, described rocker arm support moves back and forth in cylinder head along slide rail under the effect of stepper motor.
The electrodeless variable valve gear of motor described in the utility model, it when the engine speed increases, ECM unit sends corresponding pulses signal to stepper motor, stepper motor rotates respective angles after receiving pulse signal, rocker arm support is driven to move by driving mechanism, rocker arm pivot and the torque arm length between cam contact position and air door body is indirectly changed by lever principle, the cam tip circle shifted to an earlier date on camshaft touches the moment of valve rocker indirectly, add the torque arm length on valve rocker between fulcrum and air door body simultaneously, reach advanced distribution timing and the object increasing valve opening.
The utility model is by rotating with step motor control driving mechanism, thus promotion rocker arm support moves, indirectly rocker arm pivot is changed by lever principle, torque arm length between cam contact position and air door body, realize the continuous adjustment of valve lift and port timing, efficiently solve motor at high speed high load working condition and low speed small load condition to the requirement of distribution simultaneously, reduce pumping loss, when motor is normally run, accurate port timing and valve opening can be had at any rotating speed, final guarantee motor in normal operating rotational speed range to air inflow, port timing accurately controls, thus improve the power performance and the economy performance of motor, but also reduce HC, CO, NO
xdeng the discharge of harmful gas.
The utility model achieves the stepless control to valve timing and valve lift by the acting in conjunction of electronic control and mechanical structure simultaneously, overcome prior art not by same set of mechanism electrodeless control valve timing and valve lift simultaneously, simultaneously electrodeless variable valve actuator for air structure described in the utility model and control very simple, because valve timing and valve lift all can realize electrodeless adjustment under motor ECM unit controls, therefore this technology can well control the air inlet under any speed conditions of motor for also can accurately realize in motor, adaptability is extremely strong, therefore not only new car, the motor that existing any use valve rocker controls in theory can reequip this technology, using scope is very extensive, there is very high economic value and use value.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is structural representation of the present utility model.
The structural representation that Fig. 3 is pulley, rocker arm support and air door body are connected with valve rocker respectively.
Fig. 4 is the structural representation of valve rocker in the utility model.
Fig. 5 is the utility model cam and pulley contact peak, and steel ball is positioned at chute foremost, valve lift and the maximum position view of valve timing.
Fig. 6 is the utility model cam and pulley contact minimum point, and steel ball is positioned at chute rear-most end, valve lift and the minimum position view of valve timing.
Mark in figure: 1 is camshaft, and 1-1 is cam, and 2 is pulley, and 3 is rocker arm support, 4 is slide rail, and 5 is stepper motor, and 6 is worm screw, and 7 is worm gear, 8 is drive screw, and 9 is cylinder head, and 10 is air door body, and 11 is valve guide bushing, 12 is intake duct, and 13 is valve spring, and 14 is hydraulic tappet, and 15 is valve rocker, 15-1 is chute, and 16 is steel ball, and 17 is pitman arm shaft, 18 is rocker arm support bearing, and 19 is pulley spindle, and 20 is rolling bearing.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in figures 1 to 6, the electrodeless variable valve gear of a kind of motor, comprise variable valve actuator for air and distribution device, described variable valve actuator for air and distribution device are all assemblied in cylinder head 9, described variable valve actuator for air comprises valve rocker 15, rocker arm support 3 and stepper motor 5, described valve rocker is the group welding piece of a grooved, described rocker arm support 3 bottom and the slide rail 4 be fixedly installed on cylinder head 9 are slidably connected, described stepper motor 5 is connected with rocker arm support 3 by driving mechanism, one end of described valve rocker 15 is connected with the pitman arm shaft 17 be arranged on rocker arm support 3 by rocker arm support bearing 18, one end of described valve rocker 15 can be rotated around pitman arm shaft 17, described distribution device comprises air door body 10 and camshaft 1, described air door body 10 is connected with hydraulic tappet 14 under the effect of valve spring 13, described hydraulic tappet 14 upper end portion is connected with the other end of valve rocker 15, in order to ensure air door body straight line motion, valve guide bushing 11 is socketed with in the middle part of described air door body 10, described air door body 10 can slide up and down relative to valve guide bushing 11, described camshaft 1 is rotationally connected with cylinder head 9, described camshaft 7 is provided with cam 1-1, described cam 1-1 and camshaft 1 synchronous axial system, pulley 2 is provided with in notch in the middle part of described valve rocker 15, described pulley 2 is rotationally connected by rolling bearing 20 and the pulley spindle 19 be arranged on valve rocker 15, described cam 1-1 and pulley 2 circumference contact, when described camshaft 1 rotates, cam 1-1 contacts with the diverse location on pulley 2 circumferential surface, reduce wearing and tearing, improve rotation precision, described valve rocker 15 is under the drive of rocker arm support 3, valve rocker 15 changes with the position of the fulcrum of cam 1-1, change the torque arm length between fulcrum and air door body 10 on valve rocker 15, described air door body 10 is changed along the stroke of its axially lower slider, change engine air valve lift and timing.
Wherein, described hydraulic tappet 14 upper end is provided with steel ball 16, described valve rocker 15 lower end surface is provided with chute 15-1, described steel ball 16 correspondence is arranged in chute 15-1 and also contacts with it, when engine speed changes, described driving mechanism promotes rocker arm support 3 and moves, and the position of the fulcrum of cam 1-1 and pulley 11 is changed, the steel ball 16 be connected with hydraulic tappet 14 slides along the length direction of chute 15-1, and simultaneously air door body 10 is along the stroke alteration of its axially lower slider.
Wherein, described driving mechanism comprises worm screw 6, worm gear 7 and drive screw 8, described worm screw 6 is connected with the clutch end of stepper motor 5, one end of described drive screw 8 is coaxially fixedly connected with worm gear 7, its the other end passes the tapped hole of rocker arm support 3 and is engaged with, described worm screw 6 engages with worm gear 7, and described rocker arm support 3 moves back and forth in cylinder head 9 along slide rail 4 under the effect of stepper motor 5.
When motor runs, camshaft rotates under the drive of timing belt, tapping mode valve rocker swings up and down, driving air door body slides up and down, complete valve folding, when the engine speed increases, ECM unit sends corresponding pulses signal to stepper motor, stepper motor rotates respective angles after receiving pulse signal, rocker arm support is driven to move by driving mechanism, rocker arm pivot and the torque arm length between cam contact position and air door body is indirectly changed by lever principle, the cam tip circle shifted to an earlier date on camshaft touches the moment of valve rocker indirectly, add the torque arm length on valve rocker between fulcrum and air door body simultaneously, reach advanced distribution timing and the object increasing valve opening, increase the air inflow of intake duct 12, to increase the intake efficiency in engine cylinder, improve power character and the fuel economy of motor.Because valve timing and valve lift all can realize electrodeless adjustment under motor ECM unit controls, the air inlet that therefore this technology can well incorporate in motor when also accurately can realize rotating speed any to motor controls, and adaptability is extremely strong.
The utility model is used in motor, and have the motor of electrodeless variable valve gear of the present utility model, its power performance and the economy performance is good, and adopt the vehicle of this motor have equally good dynamic property, fuel economy good, discharge the advantages such as low.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. the electrodeless variable valve gear of motor, comprise variable valve actuator for air and distribution device, described variable valve actuator for air and distribution device are all assemblied in cylinder head (9), it is characterized in that: described variable valve actuator for air comprises valve rocker (15), rocker arm support (3) and stepper motor (5), described rocker arm support (3) bottom and the slide rail (4) be fixedly installed on cylinder head (9) are slidably connected, described stepper motor (5) is connected with rocker arm support (3) by driving mechanism, described rocker arm support (3) is hinged with one end of valve rocker (15), described distribution device comprises air door body (10) and camshaft (1), described air door body (10) is connected with hydraulic tappet (14) under the effect of valve spring (13), described hydraulic tappet (14) upper end portion is connected with the other end of valve rocker (15), described camshaft (1) and cylinder head (9) are rotationally connected, described camshaft (1) is provided with cam (1-1), described cam (1-1) and camshaft (1) synchronous axial system, described cam (1-1) contacts with valve rocker (15) middle part, described valve rocker (15) is under the drive of rocker arm support (3), valve rocker (15) changes with the contacting points position of cam (1-1), change the upper torque arm length between fulcrum and air door body (10) of valve rocker (15), described air door body (10) is changed along the stroke of its axially lower slider, change engine air valve lift and timing.
2. the electrodeless variable valve gear of motor according to claim 1, it is characterized in that: in the notch at described valve rocker (15) middle part, be provided with pulley (2), described pulley (2) is rotationally connected by rolling bearing (20) and the pulley spindle (19) be arranged on valve rocker (15), described cam (1-1) and pulley (2) circumference contact, when described camshaft (1) rotates, cam (1-1) contacts with the diverse location on pulley (2) circumferential surface.
3. the electrodeless variable valve gear of motor according to claim 2, it is characterized in that: described hydraulic tappet (14) upper end is provided with steel ball (16), described valve rocker (15) lower end surface is provided with chute (15-1), described steel ball (16) correspondence is arranged in chute (15-1) and also contacts with it, when engine speed changes, it is mobile that described driving mechanism promotes rocker arm support (3), cam (1-1) is changed with the position of the fulcrum of pulley (2), the steel ball (16) be connected with hydraulic tappet (14) slides along the length direction of chute (15-1), air door body (10) is along its axially lower slider stroke alteration simultaneously.
4. the electrodeless variable valve gear of motor according to claim 1, it is characterized in that: one end of described valve rocker (15) is connected with the pitman arm shaft (17) be arranged on rocker arm support (3) by rocker arm support bearing (18), and one end of described valve rocker (15) can be rotated around pitman arm shaft (17).
5. the electrodeless variable valve gear of motor according to claim 1, is characterized in that: be socketed with valve guide bushing (11) at described air door body (10) middle part, described air door body (10) can slide up and down relative to valve guide bushing (11).
6. the electrodeless variable valve gear of motor according to claim 1, it is characterized in that: described driving mechanism comprises worm screw (6), worm gear (7) and drive screw (8), described worm screw (6) is connected with the clutch end of stepper motor (5), one end of described drive screw (8) is coaxially fixedly connected with worm gear (7), its the other end passes the tapped hole of rocker arm support (3) and is engaged with, described worm screw (6) engages with worm gear (7), described rocker arm support (3) moves back and forth in cylinder head (9) along slide rail (4) under the effect of stepper motor (5).
7. the electrodeless variable valve gear of motor as claimed in any of claims 1 to 6, it is characterized in that: when the engine speed increases, ECM unit sends corresponding pulses signal to stepper motor, stepper motor rotates respective angles after receiving pulse signal, rocker arm support is driven to move by driving mechanism, rocker arm pivot and the torque arm length between cam contact position and air door body is indirectly changed by lever principle, the cam tip circle shifted to an earlier date on camshaft touches the moment of valve rocker indirectly, add the torque arm length on valve rocker between fulcrum and air door body simultaneously, reach advanced distribution timing and the object increasing valve opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550976.1U CN204082245U (en) | 2014-09-24 | 2014-09-24 | The electrodeless variable valve gear of a kind of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550976.1U CN204082245U (en) | 2014-09-24 | 2014-09-24 | The electrodeless variable valve gear of a kind of motor |
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| Publication Number | Publication Date |
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| CN204082245U true CN204082245U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420550976.1U Expired - Fee Related CN204082245U (en) | 2014-09-24 | 2014-09-24 | The electrodeless variable valve gear of a kind of motor |
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| CN (1) | CN204082245U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909332A (en) * | 2016-05-30 | 2016-08-31 | 苏立群 | Stepless valve rocker mechanism with variable lift and corresponding valve device |
| CN106256996A (en) * | 2015-06-22 | 2016-12-28 | 现代自动车株式会社 | Continuous variable valve timing apparatus and be provided with the electromotor of this device |
| CN106837465A (en) * | 2016-12-30 | 2017-06-13 | 浙江大学 | The engine valve actuating mechanism of stepless variable valve lift |
| CN108868944A (en) * | 2017-05-09 | 2018-11-23 | 牛锦辉 | Engine variable valve lift device |
| CN109695485A (en) * | 2018-12-11 | 2019-04-30 | 江苏三能动力总成有限公司 | A kind of changing air valve phase control system |
| CN111878186A (en) * | 2020-07-22 | 2020-11-03 | 武汉理工大学 | Cam direct-drive type valve mechanism for realizing continuous variable of engine valve lift |
-
2014
- 2014-09-24 CN CN201420550976.1U patent/CN204082245U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256996A (en) * | 2015-06-22 | 2016-12-28 | 现代自动车株式会社 | Continuous variable valve timing apparatus and be provided with the electromotor of this device |
| US10480358B2 (en) | 2015-06-22 | 2019-11-19 | Hyundai Motor Company | Continuously variable valve timing apparatus and engine provided with the same |
| CN105909332A (en) * | 2016-05-30 | 2016-08-31 | 苏立群 | Stepless valve rocker mechanism with variable lift and corresponding valve device |
| CN105909332B (en) * | 2016-05-30 | 2019-07-12 | 苏立群 | Electrodeless variable lift valve operating rocker arm body and corresponding valve gear |
| CN106837465A (en) * | 2016-12-30 | 2017-06-13 | 浙江大学 | The engine valve actuating mechanism of stepless variable valve lift |
| CN108868944A (en) * | 2017-05-09 | 2018-11-23 | 牛锦辉 | Engine variable valve lift device |
| CN109695485A (en) * | 2018-12-11 | 2019-04-30 | 江苏三能动力总成有限公司 | A kind of changing air valve phase control system |
| CN109695485B (en) * | 2018-12-11 | 2021-02-19 | 江苏三能动力总成有限公司 | Variable valve phase control system |
| CN111878186A (en) * | 2020-07-22 | 2020-11-03 | 武汉理工大学 | Cam direct-drive type valve mechanism for realizing continuous variable of engine valve lift |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20190924 |