CN104675467A - Engine valve tappet, engine and vehicle - Google Patents
Engine valve tappet, engine and vehicle Download PDFInfo
- Publication number
- CN104675467A CN104675467A CN201310642005.XA CN201310642005A CN104675467A CN 104675467 A CN104675467 A CN 104675467A CN 201310642005 A CN201310642005 A CN 201310642005A CN 104675467 A CN104675467 A CN 104675467A
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- tappet
- airtight cavity
- engine
- air valve
- control valve
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Abstract
The invention provides an engine valve tappet, an engine and a vehicle, wherein, the engine valve tappet comprises a tappet shell and a hydraulic cylinder formed by the tappet shell, an externally connected electromagnetic oil pressure control valve controls the oil pressure that flows into the hydraulic cylinder, the engine valve tappet further comprises: a movable plunger, arranged in the hydraulic cylinder, and dividing the hydraulic cylinder into a first airtight cavity and a second airtight cavity, wherein the first airtight cavity is connected with an engine oil circulation hole, and a part of the movable plunger stretches out of the tappet shell from the interior of the second airtight cavity; an elastic element, arranged in the second airtight cavity, wherein one end of the elastic element is connected with the movable plunger, and the other end is connected with the tappet shell; the electromagnetic oil pressure control valve controls the oil pressure flowing into the first airtight cavity in the hydraulic cylinder via the engine oil circulation hole, so as to make the movable plunger move under the action of the oil pressure and the elastic force of the elastic element, and the length of the part that stretches out of the tappet shell changes. The scheme provided by the invention has a simple and compact structure, is easy to control, improves the comfortable degree of the vehicle, and reduces the noise of a valve mechanism.
Description
Technical field
The present invention relates to technical field of vehicle, refer to a kind of air valve tappet of engine, motor and vehicle especially.
Background technique
In recent years, the use of vehicle is more and more extensive; The demand of people to vehicle is increasing, and requires more and more higher to the travelling comfort of vehicle.But, in vehicle production process, because petrol engine distribution device is very large in the temperature difference of operating conditions and non-operation, traditional engine mechanical tappet needs to match according to the gap length of valve, camshaft, this large difference variation is adapted to the gap controlled between valve tappet and camshaft, so that the apolegamy of air valve tappet of engine is wayward and distribution device easily produces noise, affects manufacturing efficiency, does not meet the requirement of people to vehicle riding comfort.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of air valve tappet of engine, motor and vehicle, solve the distribution device of vehicle in prior art and easily produce noise and the apolegamy of air valve tappet of engine is wayward, affect manufacturing efficiency, do not meet the problem of people to vehicle riding comfort requirement.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of air valve tappet of engine, comprise the oil hydraulic cylinder of tappet shell and formation thereof, and external electromagnetic fuel pressure control valve control valve controls to flow into the oil pressure in described oil hydraulic cylinder, wherein, also comprises:
Motion plunger, be arranged in described oil hydraulic cylinder, described oil hydraulic cylinder is divided into the first airtight cavity and second airtight cavity two-part, wherein said first airtight cavity is connected with machine oil opening, and a part for described motion plunger stretches out described tappet shell in described second airtight cavity;
Elastic element, is arranged in described second seal chamber, and one end is connected with described motion plunger, and the other end is connected with described tappet shell;
Described electromagnetic fuel pressure control valve control valve controls by described machine oil opening the oil pressure flowing into the first airtight cavity in described oil hydraulic cylinder, make described motion plunger at the elastic force move under influence of described oil pressure and described elastic element, the partial-length stretching out described tappet shell changes.
Above-mentioned air valve tappet of engine, wherein, when described electromagnetic fuel pressure control valve control valve controls the oil pressure increase flowed in described first airtight cavity, the length that described motion plunger stretches out described tappet shell increases; When described electromagnetic fuel pressure control valve control valve controls the oil pressure reduction entered in described first airtight cavity, the length that described motion plunger stretches out described tappet shell reduces.
Above-mentioned air valve tappet of engine, wherein, described motor column is provided with the passage of described first airtight cavity of a connection and described second airtight cavity beyond the Great Wall, is provided with pressure-relief valve structure in described passage.
Above-mentioned air valve tappet of engine, wherein, described pressure-relief valve structure comprises pressure release steel ball, pressure limiting spring and screw plug plug, wherein said pressure release steel ball is arranged in the position of passage close to described first airtight cavity, described screw plug plug is positioned at the position close to described second airtight cavity, described pressure limiting spring is between described pressure release steel ball and described screw plug plug, and one end contacts with described pressure release steel ball, and the other end contacts with described screw plug plug.
Above-mentioned air valve tappet of engine, wherein, described motion plunger comprises first portion and second portion, and the upper-end surface of described second portion is connected with the lower end surface of described first portion.
Above-mentioned air valve tappet of engine, wherein, described first portion is between described first airtight cavity and described second airtight cavity, and a wherein part for described second portion is positioned at described second airtight cavity, and another part stretches out described tappet shell.
Above-mentioned air valve tappet of engine, wherein, described passage is positioned in described first portion.
Above-mentioned air valve tappet of engine, wherein, around being embedded with the close-fitting plunger seal ring with described tappet shell in described first portion.
Above-mentioned air valve tappet of engine, wherein, the upper-end surface of the ring of plunger seal described in movement process is positioned under the lower extreme point of described machine oil opening all the time.
Above-mentioned air valve tappet of engine, wherein, described second airtight cavity has a drain tap, for discharging the machine oil in described second airtight cavity.
Above-mentioned air valve tappet of engine, wherein, described elastic element is spring.
Present invention also offers a kind of motor, comprise above-mentioned air valve tappet of engine.
Present invention also offers a kind of vehicle, comprise above-mentioned motor.
The beneficial effect of technique scheme of the present invention is as follows:
In such scheme, described air valve tappet of engine utilizes hydraulic pressure to adjust and eliminates the gap between camshaft, greatly reduces the noise of distribution device and can ensure that valve can be completely closed when hot; Valve can be changed according to engine operating condition to generate while realizing hydraulic tappet fundamental function, compare other lift range variable implementation, the tappet structure of engine valve that this programme provides is simple, compact, amount of parts is few, be easy to control, improve performance, manufacturing efficiency and vehicle riding comfort, reduce cost of production.
Accompanying drawing explanation
Fig. 1 is the tappet structure of engine valve schematic diagram of the embodiment of the present invention;
Fig. 2 is the motion schematic diagram one that the air valve tappet of engine of the embodiment of the present invention is depressed at base oil;
Fig. 3 is the motion schematic diagram of air valve tappet of engine in high oil pressure district of the embodiment of the present invention;
Fig. 4 is the motion schematic diagram two that the air valve tappet of engine of the embodiment of the present invention is depressed at base oil;
Fig. 5 is the pressure-relief valve structure schematic diagram in the embodiment of the present invention;
Fig. 6 is the Decompression valves draining process schematic in the embodiment of the present invention;
Fig. 7 is the control law schematic diagram of the electromagnetic fuel pressure control valve control valve in the embodiment of the present invention to oil pressure.
Embodiment
For making the technical problem to be solved in the present invention, technological scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed to existing vehicle distribution device and easily produce noise and the apolegamy of air valve tappet of engine is wayward, affect manufacturing efficiency, do not meet the problem of people to vehicle riding comfort requirement, a kind of air valve tappet of engine is provided, as shown in Figure 1, the oil hydraulic cylinder 20 comprising tappet shell 1 and formed, external electromagnetic fuel pressure control valve control valve controls to flow into the oil pressure in described oil hydraulic cylinder 20, also comprises:
Motion plunger 30, be arranged in described oil hydraulic cylinder 20, described oil hydraulic cylinder 20 is divided into first airtight cavity 21 and second airtight cavity 22 two-part, wherein said first airtight cavity 21 is connected with machine oil opening 4, and a part for described motion plunger 30 stretches out described tappet shell 1 in described second airtight cavity 22;
Elastic element 5, be arranged in described second seal chamber 22, and one end is connected with described motion plunger 30, the other end is connected with described tappet shell 1;
Described electromagnetic fuel pressure control valve control valve controls by described machine oil opening 4 oil pressure flowing into the first airtight cavity 21 in described oil hydraulic cylinder 20, make described motion plunger 30 at the elastic force move under influence of described oil pressure and described elastic element 5, the partial-length stretching out described tappet shell 1 changes.
The machine oil opening of the described air valve tappet of engine that the embodiment of the present invention provides is connected with the oilhole in tappet hole in cylinder cap, changes by an external electromagnetic fuel pressure control valve control valve oil pressure flowing through pipeline, thus makes motor column descend both sides to produce pressure difference beyond the Great Wall; Motion plunger moves up and down under the synergy of elastic element and oil pressure, changes motion plunger and stretches out the length of tappet shell to change the valve lift under specific operation.
The air valve tappet of engine that the embodiment of the present invention provides adopts hydraulic driving motor column plug structure, valve clearance can be eliminated on the one hand, on the other hand can by driving the control of hydraulic pressure to change the motion plunger extrusion contacted with valve guide rod, to realize the adjustment of valve lift to adapt to the different operating modes of motor to the requirement of gettering quantity.
Concrete, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, when described electromagnetic fuel pressure control valve control valve controls the oil pressure increase flowed in described first airtight cavity 21, the length that described motion plunger 30 stretches out described tappet shell 1 increases; When described electromagnetic fuel pressure control valve control valve controls the oil pressure reduction entered in described first airtight cavity 21, the length that described motion plunger 30 stretches out described tappet shell 1 reduces; That is: after engine start, electromagnetic fuel pressure control valve control valve controls machine oil and flows in the first airtight cavity 21 by machine oil opening 4 along a direction, along with the increase of oil pressure, motion plunger 30 moves along b direction under the effect of oil pressure and elastic element 5, and the part that motion plunger 30 stretches out tappet shell 1 increases; When electromagnetic fuel pressure control valve control valve controls oil pressure reduction, machine oil flows out the first airtight cavity 21 by machine oil opening 4 along c direction, along with the reduction of oil pressure, motion plunger 30 moves along d direction under the effect of oil pressure and elastic element 5, and the part that motion plunger 30 stretches out tappet shell 1 reduces.
For preventing oil pressure excessive, as shown in Figure 1, the described air valve tappet of engine that the embodiment of the present invention provides, wherein, described motion plunger 30 is provided with described first airtight cavity 21 of a connection and the passage 60 of described second airtight cavity 22, is provided with pressure-relief valve structure 70 in described passage 60.
Concrete, as shown in Figure 1 and Figure 5, described pressure-relief valve structure 70 comprises pressure release steel ball 71, pressure limiting spring 72 and screw plug plug 73, wherein said pressure release steel ball 71 is arranged in the position of passage 60 close to described first airtight cavity 21, described screw plug plug 73 is positioned at the position close to described second airtight cavity 22, described pressure limiting spring 72 is between described pressure release steel ball 71 and described screw plug plug 73, and one end contacts with described pressure release steel ball 71, and the other end contacts with described screw plug plug 73.
As shown in Fig. 1, Fig. 5 and Fig. 6, carry out in high-pressure oil feed process at electromagnetic fuel pressure control valve control valve to air valve tappet of engine, exceed the limiting pressure of pressure limiting spring 72 when oil pressure is excessive after, machine oil is along e direction from channel entrance 61 inlet passage 60, now there is action in Decompression valves mechanism 70: steel ball 71 is at oil pressure moved downward, and compress pressure limiting spring 72, high pressure oil overflows via channel outlet 62, a certain amount of machine oil is flowed in the second airtight cavity 22, thus release oil pressure.
Further, as shown in Figure 1, described motion plunger 30 comprises first portion 31 and second portion 32, and the upper-end surface of described second portion 32 is connected with the lower end surface of described first portion 31; Described first portion 31 is between described first airtight cavity 21 and described second airtight cavity 22, and a wherein part for described second portion 32 is positioned at described second airtight cavity 22, and another part stretches out described tappet shell 1; Described passage 60 is positioned in described first portion 31, and does not contact with described second portion 32.In the embodiment of the present invention, the upper-end surface of second portion 32 described in prioritizing selection is connected with in the middle part of the lower end surface of described first portion 31, can certainly be connected, in this citing that differs with other position that can reach technical purpose, the lower end surface of described first portion 31.
Between motion plunger and tappet shell, there is better sealing in the described air valve tappet of engine provided for making the embodiment of the present invention, as shown in Figure 1, around being embedded with plunger seal ring 8 close-fitting with described tappet shell 1 in described first portion 31, and described plunger seal ring 8 does not contact with described passage 60, the upper-end surface of the ring of plunger seal described in movement process 8 is positioned under the lower extreme point of described machine oil opening 4 all the time, that is: in described plunger seal ring 8 process of moving in described oil hydraulic cylinder 20 without described machine oil opening 4.
Plunger seal ring around in the middle part of the side being embedded in described first portion, can certainly other can reach technical purpose in described first portion position carry out around inlaying, in this citing that differs by embodiment of the present invention prioritizing selection.
Further, as shown in Figure 1, in the described air valve tappet of engine that the embodiment of the present invention provides, the second airtight cavity 22 there is a drain tap 9, for discharging the machine oil in described second airtight cavity 22.
Wherein, as shown in Figure 1, described elastic element 5 is spring.Other any elastic elements that can reach technical purpose can certainly be adopted, in this citing that differs.
Illustrate the working procedure of described air valve tappet of engine below.
As depicted in figs. 1 and 2, after engine start, controlled by electromagnetic fuel pressure control valve control valve, machine oil to flow through in cylinder cap valve tappet hole oil groove and then enters the first airtight cavity 21 along a direction by the machine oil opening 4 on tappet, now basis of formation oil pressure, under the promotion of basic oil pressure, motion plunger 30 moves downward along b direction, eliminates valve clearance, realizes the function of Normal hydraulic tappet.
As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 7 after motor enters high-speed high-load operating mode, electromagnetic fuel pressure control valve control valve produces action, regulated air valve tappet of engine by oil pressure, the control of electromagnetic fuel pressure control valve control valve to oil pressure comprises base oil splenium and divides f and high oil pressure part g; At cam base circle part h and air valve tappet of engine period of contact, door tappet basis oil pressure p has been mobilized in the supply of electromagnetic fuel pressure control valve control valve
0, motion plunger 30 is failure to actuate; After cam profile part i contacts air valve tappet of engine, electromagnetic fuel pressure control valve control valve supply engine valve tappet height oil pressure p
1, high pressure oil p
1to move along a direction and by plunger 30 compression retracteding position spring that moves, motion plunger 30 down moves along b direction, make valve lift become large; Cam turns over molded line angle, after getting back to basic circle and air valve tappet of engine contact condition, and electromagnetic fuel pressure control valve control valve supply engine valve tappet basis oil pressure p
0, the high pressure oil in air valve tappet of engine refluxes out along c direction the oil hydraulic cylinder 20 of air valve tappet of engine under the effect of return spring and oil pressure, and motion plunger 30 moves upward to basic oil pressure p along d direction
0under position, keep valve completely closed and apneustic gap.It should be noted that, the cam of camshaft rotates a circle promotion valve motion; Electromagnetic fuel pressure control valve control valve corresponds to the phase place change of cam rotation to the oil pressure change that air valve tappet of engine applies, therefore the moving displacement that valve changes with cam phase changes corresponding with electromagnetic fuel pressure control valve control valve to the oil pressure that air valve tappet of engine applies.
When motor operates at low speed small load condition, electromagnetic fuel pressure control valve control valve supply engine valve tappet basis oil pressure, motion plunger is failure to actuate; Valve lift gets back to minimum position.
When motor is in middling speed operating mode, electromagnetic fuel pressure control valve control valve is pressed the Rule adjusting of Fig. 7 and is suitably reduced zone of high pressure fuel feeding oil pressure, changes valve lift.
In a word, the tappet structure of engine valve that the embodiment of the present invention provides can realize continuously changing of valve lift.
For solving the problems of the technologies described above, the embodiment of the present invention additionally provides a kind of motor, comprises above-mentioned air valve tappet of engine.Wherein, the described embodiment of realization of above-mentioned air valve tappet of engine is all applicable in the embodiment of this motor, also can reach identical technique effect.
For solving the problems of the technologies described above, the embodiment of the present invention additionally provides a kind of vehicle, comprises above-mentioned motor.It should be noted that, the described embodiment of realization of above-mentioned motor is all applicable in the embodiment of this vehicle, also can reach identical technique effect.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. an air valve tappet of engine, comprises the oil hydraulic cylinder of tappet shell and formation thereof, and external electromagnetic fuel pressure control valve control valve controls to flow into the oil pressure in described oil hydraulic cylinder, it is characterized in that, also comprises:
Motion plunger, be arranged in described oil hydraulic cylinder, described oil hydraulic cylinder is divided into the first airtight cavity and second airtight cavity two-part, wherein said first airtight cavity is connected with machine oil opening, and a part for described motion plunger stretches out described tappet shell in described second airtight cavity;
Elastic element, is arranged in described second seal chamber, and one end is connected with described motion plunger, and the other end is connected with described tappet shell;
Described electromagnetic fuel pressure control valve control valve controls by described machine oil opening the oil pressure flowing into the first airtight cavity in described oil hydraulic cylinder, make described motion plunger at the elastic force move under influence of described oil pressure and described elastic element, the partial-length stretching out described tappet shell changes.
2. air valve tappet of engine according to claim 1, is characterized in that, when described electromagnetic fuel pressure control valve control valve controls the oil pressure increase flowed in described first airtight cavity, the length that described motion plunger stretches out described tappet shell increases; When described electromagnetic fuel pressure control valve control valve controls the oil pressure reduction entered in described first airtight cavity, the length that described motion plunger stretches out described tappet shell reduces.
3. air valve tappet of engine according to claim 1, is characterized in that, described motor column is provided with the passage of described first airtight cavity of a connection and described second airtight cavity beyond the Great Wall, is provided with pressure-relief valve structure in described passage.
4. air valve tappet of engine according to claim 3, it is characterized in that, described pressure-relief valve structure comprises pressure release steel ball, pressure limiting spring and screw plug plug, wherein said pressure release steel ball is arranged in the position of passage close to described first airtight cavity, described screw plug plug is positioned at the position close to described second airtight cavity, described pressure limiting spring is between described pressure release steel ball and described screw plug plug, and one end contacts with described pressure release steel ball, and the other end contacts with described screw plug plug.
5. air valve tappet of engine according to claim 3, is characterized in that, described motion plunger comprises first portion and second portion, and the upper-end surface of described second portion is connected with the lower end surface of described first portion.
6. air valve tappet of engine according to claim 5, it is characterized in that, described first portion is between described first airtight cavity and described second airtight cavity, and a wherein part for described second portion is positioned at described second airtight cavity, and another part stretches out described tappet shell.
7. air valve tappet of engine according to claim 6, is characterized in that, described passage is positioned in described first portion.
8. air valve tappet of engine according to claim 5, is characterized in that, around being embedded with the close-fitting plunger seal ring with described tappet shell in described first portion.
9. air valve tappet of engine according to claim 8, is characterized in that, the upper-end surface of the ring of plunger seal described in movement process is positioned under the lower extreme point of described machine oil opening all the time.
10. air valve tappet of engine according to claim 1, is characterized in that, described second airtight cavity has a drain tap, for discharging the machine oil in described second airtight cavity.
11. air valve tappet of engines according to claim 1, is characterized in that, described elastic element is spring.
12. 1 kinds of motors, is characterized in that, comprise the air valve tappet of engine as described in any one of claim 1-11.
13. 1 kinds of vehicles, is characterized in that, comprise motor as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642005.XA CN104675467A (en) | 2013-12-03 | 2013-12-03 | Engine valve tappet, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642005.XA CN104675467A (en) | 2013-12-03 | 2013-12-03 | Engine valve tappet, engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104675467A true CN104675467A (en) | 2015-06-03 |
Family
ID=53310984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310642005.XA Pending CN104675467A (en) | 2013-12-03 | 2013-12-03 | Engine valve tappet, engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104675467A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884751A (en) * | 2015-11-24 | 2017-06-23 | 斯凯孚公司 | Cam driven roller arrangement with distance piece |
| CN109424382A (en) * | 2017-09-04 | 2019-03-05 | 北京汽车动力总成有限公司 | A kind of dynamic air gate control device and automobile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4235620A1 (en) * | 1992-10-22 | 1994-04-28 | Hydraulik Ring Gmbh | Valve lift adjusting device for IC engines and compressors - has adjusting element controlled by pressure medium, and connected to valve lifter |
| DE4443169A1 (en) * | 1994-12-05 | 1996-06-13 | Dens Juergen Dipl Ing Dipl Wir | Valve with variable electronic control for high-speed heat engine |
| DE10045313A1 (en) * | 2000-09-12 | 2002-03-21 | Iav Gmbh | Variable mechano-hydraulic valve drive for gas shuttle valves of internal combustion engine, has tappet whose internal area is filled with liquid whose viscosity is altered using controllable magnetic field |
| CN202338365U (en) * | 2011-12-03 | 2012-07-18 | 锐展(铜陵)科技有限公司 | Hydraulic tappet structure |
-
2013
- 2013-12-03 CN CN201310642005.XA patent/CN104675467A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4235620A1 (en) * | 1992-10-22 | 1994-04-28 | Hydraulik Ring Gmbh | Valve lift adjusting device for IC engines and compressors - has adjusting element controlled by pressure medium, and connected to valve lifter |
| DE4443169A1 (en) * | 1994-12-05 | 1996-06-13 | Dens Juergen Dipl Ing Dipl Wir | Valve with variable electronic control for high-speed heat engine |
| DE10045313A1 (en) * | 2000-09-12 | 2002-03-21 | Iav Gmbh | Variable mechano-hydraulic valve drive for gas shuttle valves of internal combustion engine, has tappet whose internal area is filled with liquid whose viscosity is altered using controllable magnetic field |
| CN202338365U (en) * | 2011-12-03 | 2012-07-18 | 锐展(铜陵)科技有限公司 | Hydraulic tappet structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884751A (en) * | 2015-11-24 | 2017-06-23 | 斯凯孚公司 | Cam driven roller arrangement with distance piece |
| CN106884751B (en) * | 2015-11-24 | 2020-09-18 | 斯凯孚公司 | Cam follower roller device with spacer |
| CN109424382A (en) * | 2017-09-04 | 2019-03-05 | 北京汽车动力总成有限公司 | A kind of dynamic air gate control device and automobile |
| CN109424382B (en) * | 2017-09-04 | 2023-08-22 | 北京汽车动力总成有限公司 | Power valve control device and automobile |
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