CN101126331A - Valve controlling mechanism - Google Patents
Valve controlling mechanism Download PDFInfo
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- CN101126331A CN101126331A CNA2006101121526A CN200610112152A CN101126331A CN 101126331 A CN101126331 A CN 101126331A CN A2006101121526 A CNA2006101121526 A CN A2006101121526A CN 200610112152 A CN200610112152 A CN 200610112152A CN 101126331 A CN101126331 A CN 101126331A
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Abstract
The invention provides a valve control mechanism, which can control a valve lift in an engine and produces at least three switch combinations. The execution case of the invention is mainly to utilize a simple mechanism, a plurality of solenoid valves and a liquid pressure pipeline to control the On/Off of a engine valve. With the mechanism provided by the invention, the liquid pressure pipeline and the special design of the mechanism can be considerably simplified, and thus, the same valve control mechanism can be utilized in the same engine to control the On/Off of the valve to obtain the valve lift needed by different demands of bigger horsepower, better combustion efficiency or cylinder deactivation.
Description
Technical field
The present invention relates to a kind of valve control mechanism, particularly a kind of oil circuit and structural design simplified is to provide a kind of valve control mechanism that valve is produced switch combination more than three kinds.
Background technique
Ballooning oil prices in recent years, the oil consumption performance of engine comes into one's own.Show that by data the significance of variable valve control mechanism technology is quite high, because described technology is cutting-out cylinder (cylinder deactivation), dwindles the basis of engine multinomial technology such as (down size).
The change of valve lift can see through following several modes and reach fuel-saving purpose:
High or low suction valve lift: can be respectively according to the different demands of engine high and low rotating speed, with two suction valve same valve lifts of optimized design, when the engine high speed rotating, uses high-liftly to increase horsepower with the raising intake efficiency, reach energy-conservation effect.When middle and slow speed of revolution, use low lift, increase induction air flow ratio, reduction camshaft actuated torsion and stable running down burning and come energy-conservation.The representative car type of this type of technology is car types such as the CIVIC of Honda (HONDA) and ACCORD.In addition, the ValveTronic system of BMW more can provide the technology of continuously variable valve lift, so that the engine running optimization.
The different valve lifts of two suction valves height: by single suction valve air inlet, cause strong eddy current in the cylinder and improve burning and come energy-conservationly when purpose is middle and slow speed of revolution, when high rotating speed, then recover two suction valves and be all high-lift state.Representative car type is the CB400F of Honda.But for fear of sedimentation of fuel when the middle and slow speed of revolution in the valve back of throttle down, cause the shortcoming of the incorrect and carbon distribution of air fuel ratio, can form therefore that a suction valve is high-lift to be avoided with another suction valve low lift.
Close all valve lifts: for the engine or the mixed power engine of big volume, when the low output of engine, close the partly valve lift of cylinder, reduce the purpose that pump is inhaled loss when reaching cutting-out cylinder.Representative car type is the Insight of Honda.
In order to reach above-mentioned purpose at 3, a lot of control techniques about the valve lift are arranged, for example: US.Pat.No.4,523 in the prior art, 550 promptly is to utilize to sell the lift that the mechanism that changes comes control valve, and the valve lift kind of described technology is for closing a valve or one high and one low lift valve.And for example, US.Pat.No.4,727,831, its be disclose a kind of use three cams and three rocking arms reach control two valves produce high, high combination and in, the valve lift of low combination.In addition, US.Pat.No.4 and for example, 887,563 disclosed a kind of utilize three cams and three rocking arms control two air intake valves produce high, high-lift combination or the combination of high and low lift or in, three kinds of valve lifts combinations such as low lift combination.
Comprehensive above-mentioned prior art, though can produce the lift of multiple combination, but also can't finish high rotating speed horsepower, medium speed eddy current, cutting-out cylinder and flame-out needed valve lift state in same engine, therefore needing a kind of valve control mechanism badly remedies the deficiencies in the prior art.
Summary of the invention
Main purpose of the present invention, provide a kind of valve control mechanism, it is high, high-lift that it is that two suction valves of control on the cylinder produce, and the combination of high and low lift and throttle down reaches in same engine with the high speed high-power, the purpose of middle low speed eddy current and cutting-out cylinder.
Secondary objective of the present invention, provide a kind of valve control mechanism, it is to utilize switching pin and oil circuit to be less than three, the combination that the solenoid valve of control oil channel is no more than two, two suction valves that reach on the control cylinder produce height, high-lift, the purpose of high and low lift and throttle down.
Another object of the present invention provides a kind of valve control mechanism, and it is to utilize the mode of switching pin and oil circuit control, reaches the purpose of simplifying one control air valve lift mechanism and reducing cost.
To achieve the above object, the invention provides a kind of valve control mechanism, it is at least three kinds of lifts variations that the may command valve produces high, high-lift and high and low lift and complete shut-down.Wherein said valve control mechanism more reaches described three kinds of lifts with three following oil ducts and two following solenoid valves to be changed.
To achieve the above object, the invention provides a kind of valve control mechanism, it is to include: the first and second valve rocking arm, and it is to be connected with first and second valve respectively; First drives rocking arm, and it is a side that is arranged at the described first valve rocking arm, and described first to drive rocking arm be that driving by first cam produces motion; Second drives rocking arm, and it is a side that is arranged at the described second valve rocking arm, and described second to drive rocking arm be that driving by second cam produces motion; First linkage unit, it is to connect described first to drive rocking arm with the described first valve rocking arm or be connected described first and second valve rocking arm; And second linkage unit, its be connect described second drive rocking arm and the described second valve rocking arm or make the described second driving rocking arm and the described second valve sub rocker arm from.
Preferably, described first linkage unit or described second linkage unit be can be that an elastomer and an oil pressure actuated assembly formed one switch pin.Described switching pin may be selected to be a pre-closing pin and one pre-open pin wherein it.In addition, described first linkage unit or described second linkage unit also can be a two-way oil pressure actuated pin.
To achieve the above object, the present invention more provides a kind of valve control mechanism, it is to include: the first and second valve rocking arm, and it is to be connected with first and second valve respectively, the described first valve rocking arm is controlled by the driving of one first cam and is produced motion; Drive rocking arm, its be arranged at described first and the described second valve rocking arm between, described driving rocking arm is to produce motion by the driving of one second cam; First linkage unit, its be connect described driving rocking arm and the described first valve rocking arm or make described driving rocking arm and the described first valve sub rocker arm from; And second linkage unit, its be connect described driving rocking arm and the described second valve rocking arm or make described driving rocking arm and the described second valve sub rocker arm from.
Preferably, have more a power transfer unit between described first valve rocking arm and described first cam, it is to be arranged on the described first valve rocking arm, so that the described first valve rocking arm receives the power that described first cam is transmitted.Described power transfer unit more comprises: a cylindrical shell, and it is to have one first through hole and a metering hole, has a containing space between described first through hole and the described metering hole; One ejector pin, it is to be arranged in described first through hole, and an end of described ejector pin is corresponding with described first cam, and described ejector pin can slide in described first through hole; And an oil circuit control unit, it is to be connected with described metering hole, described oil circuit control unit can provide oil body to enter described containing space or discharge oil body in the described containing space.
Preferably, have more a power transfer unit between described first valve rocking arm and described first cam, so that the described first valve rocking arm receives the power that described first cam is transmitted.Described power transfer unit more comprises: a pedestal, and it is a hydraulic path that has one first containing space, one second containing space and a liquid can be provided; One first ejector pin, it is to be arranged in described first containing space, and described first ejector pin bottom more is connected with one first elastomer, and a side of described first ejector pin has a recess; And one second ejector pin, it is to be arranged in described second containing space and with one one to be connected with described oil pressure path, described second ejector pin bottom more is connected with one second elastomer, one end of described second ejector pin can embed or leave described recess by the described liquid and the described second elastomeric effect.
Description of drawings
Figure 1A is the first preferred embodiment schematic representation of valve control mechanism of the present invention;
Figure 1B is the oil circuit control schematic representation of first preferred embodiment of valve control mechanism of the present invention;
Fig. 1 C is a two-way oil pressure actuated pin schematic representation of the present invention;
Fig. 1 D is a pre-closing pin schematic representation of the present invention;
Fig. 1 E is the valve lift combination schematic representation of first preferred embodiment of valve control mechanism of the present invention;
Fig. 2 A is the second preferred embodiment schematic representation of valve control mechanism of the present invention;
Fig. 2 B is a pre-unlatching pin schematic representation of the present invention;
Fig. 2 C is the first preferred embodiment schematic representation of power transfer unit of the present invention;
Fig. 2 D is the oil circuit control schematic representation of second preferred embodiment of valve control mechanism of the present invention;
Fig. 2 E is the valve lift combination schematic representation of second preferred embodiment of valve control mechanism of the present invention;
Fig. 3 A is the 3rd preferred embodiment schematic representation of valve control mechanism of the present invention;
Fig. 3 B is the second preferred embodiment schematic representation of power transfer unit of the present invention;
Fig. 3 C executes the oil circuit control schematic representation of example for the 3rd of valve control mechanism of the present invention;
Fig. 3 D is the valve lift combination schematic representation of the 3rd preferred embodiment of valve control mechanism of the present invention.
Description of reference numerals: 1-valve control mechanism; 10-first valve; 11-second valve; 12-first drives rocking arm; The 13-first valve rocking arm; The 14-second valve rocking arm; 15-second drives rocking arm; 16-first cam; 17-second cam; 18-first linkage unit; The 180-containing space; The 181-shank; 182-retaining lubricating pad sheet; 19-second linkage unit; The 191-shank; The 192-containing space; The 193-elastomer; 194-retaining lubricating pad sheet; The 2-valve control mechanism; 20-first valve; 21-second valve; The 22-first valve rocking arm; 23-drives rocking arm; The 24-first valve rocking arm; 25-first linkage unit; The 250-containing space; The 251-body of rod; The 252-shank; The 253-elastomer; 254-shelves body; The 26-power transfer unit; The 260-cylindrical shell; The 261-containing space; 262-first through hole; The 264-metering hole; The 265-ejector pin; 27-second linkage unit; 28-first cam; 29-second cam; The 3-valve control mechanism; 30-first valve; 31-second valve; The 32-first valve rocking arm; 33-drives rocking arm; The 34-first valve rocking arm; 35-first linkage unit; The 36-power transfer unit; The 360-pedestal; 361-first ejector pin; The 3611-recess; 362-second ejector pin; The 3621-end; 363-first containing space; 347-first elastomer; 365-second containing space; 366-second elastomer; 367-oil pressure path; 37-second linkage unit; 38-first cam; 39-second cam; 4,5,6-oil circuit control unit; 40,41,50,51,60,61-solenoid directional control valve; 42,52,62-helps the Pu; 43,53,63-oil groove; The 9-oil body; Pa, Pb, Pc-oil circuit.
Embodiment
In order feature of the present invention, purpose and function to be had further cognitive and to understand, hereinafter the spy describes the relevant thin bilge construction of system of the present invention and the theory reason of design, so that can understand characteristics of the present invention, detailed description is presented below:
The invention provides a kind of valve control mechanism, it is that the may command valve produces high, high-lift and high and low lift and makes up with complete shut-down, can finish at least three kinds of required valve lifts variations of high speed high-power, middle low speed high-eddy and cutting-out cylinder in same engine.Wherein said valve control mechanism more reaches described three kinds of lifts with three following oil ducts and two following solenoid valves to be changed.
In order to realize above-mentioned valve control mechanism, see also shown in Figure 1A, described figure is the first preferred embodiment schematic representation of valve control mechanism of the present invention.Described valve control device 1 includes one first valve rocking arm 13, one second valve rocking arm 14, one first drives rocking arm 12, one second and drives rocking arm 15, one first linkage unit 18 and one second linkage unit 19.The described first valve rocking arm 13 is to be connected with one first valve 10, and the described second valve rocking arm 14 is to be connected with one second valve 11.Described first valve 10 and described second valve 11 be the valve on the engine cylinder (not shown), described first valve 10 and described second valve 11 open complete air inflow that can Control Engine.As for the existing technology that is configured between described first valve 10 and described second valve 11 and the engine, do not do at this and to give unnecessary details.
Described first drives rocking arm 12, and it is a side that is arranged at the described first valve rocking arm 13, and the described first driving rocking arm 12 is to produce motion by the driving of one first cam 16.Described second drives rocking arm 15, and it is a side that is arranged at the described second valve rocking arm 14, and the described second driving rocking arm 15 is to produce motion by the driving of one second cam 17.Described first cam 16 and described second cam 17 can drive by a camshaft (not shown) and rotate.In the present embodiment, described first cam 16 is to belong to low lift cam (MidCam), described second cam 17 is the cams (High Cam) that belong to high-lift, that is described first cam 16 can make described first movement travel that drives rocking arm 12 generations make described second to drive the movement travel that rocking arm 15 produces less than described second cam 17.Described first linkage unit 18, it is to connect described first to drive rocking arm 12 with the described first valve rocking arm 13 or be connected the described first valve rocking arm 13 and the second valve rocking arm 14.In the present embodiment, described first linkage unit 18 is a two-way oil pressure actuated pin.Described second linkage unit 19, it is to connect described second to drive rocking arm 15 and the described second valve rocking arm 14 or make described second to drive rocking arm 15 and separate with the described second valve rocking arm 14.In the present embodiment, described second linkage unit 19 is a pre-closing pin.
See also shown in Fig. 1 C and Fig. 1 D, wherein, Fig. 1 C is a two-way oil pressure actuated pin schematic representation of the present invention; And Fig. 1 D is a pre-closing pin schematic representation of the present invention.In Fig. 1 C, described two-way oil pressure actuated pin, in a containing space 180 is arranged, one shank 181 is arranged in the described containing space 180, the both sides of shank 181 have retaining lubricating pad sheet 182, and oil circuit Pc and Pb are connected with described containing space 180, and the start that therefore sees through oil circuit Pb or Pc can be moved in described containing space 180 two ends by the described shank 181 of oil body 9 controls, reach to connect described first and drive rocking arm with the described first valve rocking arm or be connected described first and second valve rocking arm.Return shown in Figure 1A, when oil circuit Pc start, when making the oil pressure of Pc be higher than Pb, shank 181 moves to the right side and connects the described first valve rocking arm 13 and the second valve rocking arm 14; Otherwise when oil circuit Pb start, when making the oil pressure of Pb be higher than Pc, shank 181 moves to the left side and connects described first and drive rocking arm 12 and the described first valve rocking arm 13 when described.
Shown in Fig. 1 D, described pre-closing pin includes a shank 191, has a containing space 192 in it.Be provided with an elastomer 193 in the described containing space 192, it is to be connected with the inwall of an end with described shank 191, and the other end then is fixed on the side; One end of described shank 191 is connected with a retaining lubricating pad sheet 194.One side of described pre-closing pin is connected with an oil circuit Pa.Described pre-closing pin to make flowing mode as described below: when oil circuit Pa supplies with oil body 9 and enters in the described pre-closing pin, described shank 191 is subjected to oil body 9 pushings described retaining lubricating pad sheet 194 backs and promotes, can move to the other end (right-hand member) of pre-closing pin, and compress the elastomer 193 of described shank 191 inside, make it accumulate elastic restoring force.When oil circuit Pa unavailability oil body 9, the oil pressure that acts on described shank 191 can disappear, and this moment, the elastic restoring force accumulated of elastomer 193 of described shank 191 inside can discharge, and made shank 191 move toward the other ends (left end).Return Figure 1A, see through the moving of shank of described pre-closing pin, can connect described second and drive rocking arm 15 and the described second valve rocking arm 14 or make described second to drive rocking arm 15 and separate with the described second valve rocking arm 14.
See also shown in Figure 1B, described figure is the oil circuit control schematic representation of first preferred embodiment of valve control mechanism of the present invention.The design of described oil circuit control unit 4 is designed for control oil channel Pa, Pb, Pc, has used two solenoid directional control valves of two four- holes 40,41, and wherein code name A, B are the working line interface, that is are connected with oil circuit Pa, Pb, Pc.Code name P is the pressure source interface, is connected to a gang of Pu 42.Code name T represents the discharge opeing interface, is connected to an oil groove 43.Code name Y represents the control contact of control valve.
See also shown in Fig. 1 E, see through the oil circuit of control described Pa, Pb, Pc, can make described first linkage unit and described second linkage unit produce different combinations, and then make the valve state of described first valve body and described second valve body produce different lifts.With Figure 1A is example, and described first linkage unit 18 is to connect described first valve rocking arm 13 and the described second valve rocking arm 14, and described second linkage unit 19 is to connect the described second valve rocking arm 14 and described second to drive rocking arm 15.Therefore when described first drove rocking arm 12 and contact, because described first linkage unit 18 drives rocking arm 12 and contact with described first, so the described first driving rocking arm 12 only can move separately described first cam 16 in rotation process.
And described second cam 17 is when rotating, be connected with the described second valve rocking arm 14 through described second linkage unit 19 because described second drives rocking arm 15, the described second valve rocking arm 14 sees through described first linkage unit 18 again and is connected with the described first valve rocking arm 13, therefore when 17 pairs described second on described second cam drives rocking arms 15 and produces motion, described second drive rocking arm 15 can see through described second linkage unit 18, first linkage unit 18 and drive the described first valve rocking arm 13, the second valve rocking arm 14 produces and moves.Because described second cam 17 belongs to high-lift cam, therefore described first valve 10 and described second valve 11 can produce high-lift opening.The combination of other motion in like manner is shown in Fig. 1 E.When valve 10, valve 11 when all being high-lift, be to provide engine to produce high-revolving horsepower.When valve 10, valve 11 all are closed condition, then be the state of cutting-out cylinder.When valve 10 and valve 11 are respectively low lift when high-lift, then can provide engine generation medium speed eddy current state or the state of cutting the engine.
See also shown in Fig. 2 A, described figure is the second preferred embodiment schematic representation of valve control mechanism of the present invention.Described valve control mechanism 2, it is to include: one first valve rocking arm 22, one second valve rocking arm 24, drive rocking arm 23, one first linkage unit 25, one second linkage unit 27 and a power transmission unit 26.The described first valve rocking arm 22 is to be connected with one first valve 20, and the described first valve rocking arm 22 can produce motion by the driving of one first cam 28.The described second valve rocking arm 24 is to be connected to control the switching of described second valve with one second valve 21.Described first valve 20 and described second valve 21 are to be arranged on the engine cylinder with the switching mechanism as the control air inflow.As for the existing technology that is configured between described first valve 20 and described second valve 21 and the engine, do not do at this and to give unnecessary details.Described driving rocking arm 23, it is to be arranged between described first valve rocking arm 22 and the described second valve rocking arm 24, described driving rocking arm 23 is to produce motion by the driving of one second cam 29.Described first cam 28 and described second cam 29 can drive by a camshaft (not shown) and rotate.In the present embodiment, described first cam 28 is to belong to low lift cam (Mid Cam), described second cam 29 is the cams (High Cam) that belong to high-lift, that is described first cam 28 can make the movement travel of the described first valve rocking arm 22 generations make the movement travel of the described second valve rocking arm 27 generations less than described second cam 29.
Described first linkage unit 25, it is to connect described driving rocking arm 23 with the described first valve rocking arm 22 or described driving rocking arm 23 is separated with the described first valve rocking arm 22.In the present embodiment, described first linkage unit is 25 to be a pre-pin of opening.See also shown in Fig. 2 B, described figure is a pre-unlatching pin schematic representation of the present invention.Has a containing space 250 in the described pre-unlatching pin, the end that described containing space 250 is equipped with a shank 252 and described containing space 250 is connected with an oil circuit Pb, described shank 252 is connected with a body of rod 251, and the described body of rod 251 extends described pre-unlatching pin by described containing space 250.One end of the described body of rod 251 with one grade of body 254 arranged, be placed on the described body of rod 251 with an elastomer 253 between shelves body 254 and described pre-unlatching pin.
When oil circuit Pb provides oil pressure to act on the described shank 252, can make shank 252 move to described left side, move and drive the described body of rod 251, and then compress described elastomer 253, to accumulate elastic restoring force.When the oil pressure of oil circuit Pb disappeared, the elastic restoring force effect of elastomer 253 made described shank 252 move right.Return again shown in Fig. 2 A, see through oil circuit Pb and described elastomeric start, control the start of described pre-unlatching pin to connect described driving rocking arm 23 with the described first valve rocking arm 22 or described driving rocking arm 23 is separated with the described first valve rocking arm 22.Described second linkage unit 27, it is to connect described driving rocking arm 23 with the described second valve rocking arm 24 or described driving rocking arm 23 is separated with the described second valve rocking arm 24.In the present embodiment, described second linkage unit 27 is a pre-closing pin.The operation principles of the pre-pin in described pre-pass to narrate in Fig. 1 D, is not done at this and to be given unnecessary details.
See also shown in Fig. 2 C, described figure is the first preferred embodiment schematic representation of power transfer unit of the present invention.Described power transfer unit 26 is to be arranged on the described first valve rocking arm (not shown), and it is to include a cylindrical shell 260, an ejector pin 265 and an oil circuit control unit (not shown).Described cylindrical shell 260, it is to have one first through hole 262 and a metering hole 264, has a containing space 261 between described first through hole 262 and the described metering hole 264.Described ejector pin 265, it is to be arranged in described first through hole 262, and an end of described ejector pin 265 is corresponding with described first cam 28, and described ejector pin 265 can slide in described first through hole 262.
Described oil circuit control unit, it is to be connected with described metering hole 264, described oil circuit control unit can be selected to provide oil body to enter described containing space 261 and move up to promote described ejector pin 265; Or discharge oil body in the described containing space 261, described ejector pin 265 is moved down.If ejector pin 265 moves up, then can receive power that described first cam 28 transmitted and drive the described first valve rocking arm and move.Because the aperture of described metering hole 264 is under suitable bore, even if described first cam 28 contacts with described ejector pin 265, oil body in the described containing space 261 also can't release fast, therefore described power transfer unit can be because of the incompressibility of the oil body in the containing space, and obtain good rigidity, for example: the metering hole below 2mm can carry the cam drive power that reaches 200N.If oil body releases, then ejector pin 265 is downward, and the then described first valve rocking arm can't receive the driving force of described first cam 28.In the present embodiment, the mode of execution of described oil circuit control unit can be shown in Fig. 2 D, but not subject to the limits.
See also shown in Fig. 2 D, described figure is the oil circuit control schematic representation of second preferred embodiment of valve control mechanism of the present invention.The design of described oil circuit control unit 5 is designed for control oil channel Pa, Pb, Pc, has used two solenoid directional control valves of two four- holes 50,51, and wherein code name A, B are the working line interface, that is are connected with oil circuit Pa, Pb, Pc.Code name P is the pressure source interface, is connected to a gang of Pu 52.Code name T represents the discharge opeing interface, is connected to an oil groove 53.Code name Y represents the control contact of control valve.
See also shown in Fig. 2 E, see through the oil circuit of control described Pa, Pb, Pc, can make described first linkage unit, described second linkage unit and described power transfer unit produce different combinations, and then make the valve state of described first valve body and described second valve body produce different lifts.Be example and cooperate shown in Fig. 2 C that described power power transmission unit 26 is because oil circuit Pc supplies oil pressure with Fig. 2 A, therefore described ejector pin 265 moves up.Described first linkage unit 25 is that the described first valve rocking arm 22 is separated with described driving rocking arm 23; Described second linkage unit 27 is to connect the described second valve rocking arm 24 and described driving rocking arm 23.Under above-mentioned state, when described first cam 28 (low lift) contacts with described power transfer unit 26 in rotation process, power can be passed to the described first valve rocking arm 22, because described driving rocking arm 23 does not contact with the described first valve rocking arm 22, therefore the described first valve rocking arm 22 only can move separately, and then drives described first valve 20 and carry out the low lift opening.
And described second cam 29 (high-lift) is when rotating, because described driving rocking arm 23 sees through described second linkage unit 27 and is connected with the described second valve rocking arm 24, therefore when 29 pairs of described driving rocking arms 23 of described second cam produce motion, described driving rocking arm 23 can see through described second linkage unit 27 and drive the 24 generation motions of the described second valve rocking arm, and then drives described second valve, 21 openings.Because described second cam 29 belongs to high-lift cam, therefore described second valve 21 can produce high-lift opening.The combination of other motion in like manner is shown in Fig. 2 E.
See also shown in Fig. 3 A, described figure is the second preferred embodiment schematic representation of valve control mechanism of the present invention.Described valve control mechanism 3, it is to include: one first valve rocking arm 32, one second valve rocking arm 34, drive rocking arm 33, one first linkage unit 35, one second linkage unit 37 and a power transmission unit 36.The described first valve rocking arm 32 is to be connected with one first valve 30, and the described first valve rocking arm 32 can produce motion by the driving of one first cam 38.The described second valve rocking arm 34 is to be connected to control the switching of described second valve 31 with one second valve 31.Described driving rocking arm 33, it is to be arranged between described first valve rocking arm 32 and the described second valve rocking arm 34, described driving rocking arm 33 is to produce motion by the driving of one second cam 33.Described first cam 38, described second cam 39, the described first valve rocking arm 32, the second valve rocking arm 34, described driving rocking arm 33, described first linkage unit 35 and described second annexation that connects between single 37 yuan, identical with Fig. 2 A, do not do at this and to give unnecessary details.
See also shown in Fig. 3 B, described figure is the second preferred embodiment schematic representation of power transfer unit of the present invention.Described power transfer unit 36 is to be arranged on the described first valve rocking arm, and it is to include a pedestal 360, one first ejector pin 361 and one second ejector pin 362.Described pedestal 360, it is an oil pressure path 367 that has one first containing space 363, one second containing space 365 and an oil body can be provided.Described first ejector pin 361, it is to be arranged in described first containing space 363, and described first ejector pin 361 bottoms more are connected with one first elastomer 364, and a side of described first ejector pin 361 has a recess 3611.Described second ejector pin 362, it is to be arranged in described second containing space 365 and with one one to be connected with described oil pressure path 367, described oil pressure path is connected with the oil circuit Pc of figure three A.Described second ejector pin 362 bottoms more are connected with one second elastomer 366, and an end of described second ejector pin 362 can embed or leave described recess 3611 by the effect of described liquid and described second elastomer 366.
Next the action of described power transfer unit 36 is described, described first elastomer 364 be not subjected under the external force effect, and the meeting nature promotes described first ejector pin 361 and moves up.At this moment, if during described hydraulic path 367 unavailability oil pressure, described second elastomer 366 is not owing to there is the external force effect, and therefore described second elastomer 366 can promote described second ejector pin 362 and move forward, and makes the end 3621 of described second ejector pin 362 embed described recess 3611.Described second ejector pin 362 embeds the position that described recess 3611 can be fixed on described first ejector pin 361 top, and make described first ejector pin 361 be able to contact with described first cam 38 and receive the power of described first cam 38, drive 32 motions of the described first valve rocking arm.When described oil pressure path 367 was supplied oil pressure, the pressure of oil pressure can promote described second ejector pin 362 and move to the right, and then made the end 3621 of described second ejector pin 362 break away from described recess 3611.Therefore when described first cam 38 contacts with described first ejector pin 361, because described first ejector pin 361 there is no the support of described second ejector pin 362, therefore the power that transmitted of described first cam 38 can be absorbed by described first elastomer 364, can't be passed to the described first valve rocking arm 32 with actuation force.
See also shown in Fig. 3 C, described figure is the oil circuit control schematic representation of the 3rd preferred embodiment of valve control mechanism of the present invention.The design of described oil circuit control unit 6 is designed for control oil channel Pa, Pb, Pc, has used two solenoid directional control valves of two four-holes 61,62, and wherein code name A is the working line interface, that is is connected with oil circuit Pa, Pb, Pc.Code name P is the pressure source interface, is connected to a gang of Pu 62.Code name T represents the discharge opeing interface, is connected to an oil groove 63.Code name Y represents the control contact of control valve.
See also shown in Fig. 3 D, see through the oil circuit of control described Pa, Pb, Pc, can make described first linkage unit, described second linkage unit and described power transfer unit produce different combinations, and then make the valve state of described first valve body and described second valve body produce different lifts.Be example and cooperate shown in Fig. 3 B that described power power transmission unit 36 is owing to hydraulic path Pc and unavailability oil pressure, the position that described first ejector pin 361 is maintained with Fig. 3 A.Therefore described first linkage unit 35 makes the described first valve rocking arm 32 be separated with described driving rocking arm 33 also because oil circuit Pb does not have the oil pressure supply; Therefore described second linkage unit 37 connects the described second valve rocking arm 34 and described driving rocking arm 33 also because oil circuit Pa does not have the oil pressure supply.Under above-mentioned state, when described first cam 38 (low lift) contacts with described power transfer unit 36 in rotation process, power can be passed to the described first valve rocking arm 32, because described driving rocking arm 33 does not contact with the described first valve rocking arm 32, therefore the described first valve rocking arm 32 only can move separately, and then drives described first valve 30 and carry out the low lift opening.
And described second cam 39 (high-lift) is when rotating, because described driving rocking arm 33 sees through described second linkage unit 37 and is connected with the described second valve rocking arm 34, therefore when 39 pairs of described driving rocking arms 33 of described second cam produced motion, described driving rocking arm 33 can drive the described second valve rocking arm 34 through described second linkage unit 37 and produce motion.Because described second cam 39 belongs to high-lift cam, therefore described second valve 31 can produce high-lift opening.The combination of other motion in like manner is shown in Fig. 3 D.
In sum, structure characteristic of the present invention and each embodiment disclose all in detail, only utilize and switch pin mechanism and see through two switching valves and three oil circuits and can produce valve lift combination more than three kinds and can fully demonstrate the present invention, as seen its all dark well-off progressive of executing on purpose and effect has the value of industry.
Only the above only is preferred embodiment of the present invention, when can not with the scope implemented of qualification the present invention, promptly the equalization of doing according to claim of the present invention generally changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (10)
1. a valve control mechanism is characterized in that, includes:
First and the second valve rocking arm, it is to be connected with first and second valve respectively;
First drives rocking arm, and it is a side that is arranged at the described first valve rocking arm, and described first to drive rocking arm be that driving by first cam produces motion;
Second drives rocking arm, and it is a side that is arranged at the described second valve rocking arm, and described second to drive rocking arm be that driving by second cam produces motion;
First linkage unit, it is to connect described first to drive rocking arm with the described first valve rocking arm or be connected described first and second valve rocking arm; And
Second linkage unit, its be connect described second drive rocking arm and the described second valve rocking arm or make the described second driving rocking arm and the described second valve sub rocker arm from.
2. valve control mechanism as claimed in claim 1, wherein said first linkage unit are the switching pin that an elastomer and an oil pressure actuated assembly are formed, and described switching pin is that a pre-closing pin and pre-a unlatching are sold one of them.
3. valve control mechanism as claimed in claim 1, wherein said first linkage unit are a two-way oil pressure actuated pin.
4. valve control mechanism as claimed in claim 1, wherein said second linkage unit are the switching pin that an elastomer and an oil pressure actuated assembly are formed, and described switching pin is that a pre-closing pin and pre-a unlatching are sold one of them.
5. valve control mechanism as claimed in claim 1, wherein said second linkage unit are a two-way oil pressure actuated pin.
6. a valve control mechanism is characterized in that, includes:
First and the second valve rocking arm, it is to be connected with first and second valve respectively, the described first valve rocking arm is controlled by the driving of one first cam and is produced motion;
Drive rocking arm, its be arranged at described first and the described second valve rocking arm between, described driving rocking arm is to produce motion by the driving of one second cam;
First linkage unit, its be connect described driving rocking arm and the described first valve rocking arm or make described driving rocking arm and the described first valve sub rocker arm from; And
Second linkage unit, its be connect described driving rocking arm and the described second valve rocking arm or make described driving rocking arm and the described second valve sub rocker arm from.
7. valve control mechanism as claimed in claim 6, wherein said first linkage unit are the switching pin that an elastomer and an oil pressure actuated assembly are formed, and described switching pin is that a pre-closing pin and pre-a unlatching are sold one of them.
8. valve control mechanism as claimed in claim 6, wherein said second linkage unit are the switching pin that an elastomer and an oil pressure actuated assembly are formed, and described switching pin is that a pre-closing pin and pre-a unlatching are sold one of them.
9. valve control mechanism as claimed in claim 6, the wherein said first valve rocking arm more is provided with a power transfer unit, so that the described first valve rocking arm receives the power that described first cam is transmitted, described power transfer unit more comprises:
One cylindrical shell, it is to have one first through hole and a metering hole, has a containing space between described first through hole and the described metering hole;
One ejector pin, it is to be arranged in described first through hole, and an end of described ejector pin is corresponding with described first cam, and described ejector pin slides in described first through hole; And
One oil circuit control unit, it is to be connected with described metering hole, described oil circuit control unit provides oil body to enter described containing space or discharges the interior oil body of described containing space.
10. valve control mechanism as claimed in claim 6, the wherein said first valve rocking arm more is provided with a power transfer unit, so that the described first valve rocking arm receives the power that described first cam is transmitted, described power transfer unit more comprises:
One pedestal, it is a hydraulic path that has one first containing space, one second containing space and liquid is provided;
One first ejector pin, it is to be arranged in described first containing space, and described first ejector pin bottom more is connected with one first elastomer, and a side of described first ejector pin has a recess; And
One second ejector pin, it is to be arranged in described second containing space and with one one to be connected with described oil pressure path, described second ejector pin bottom more is connected with one second elastomer, one end of described second ejector pin embeds or leaves described recess by the described liquid and the described second elastomeric effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101121526A CN100547230C (en) | 2006-08-15 | 2006-08-15 | Valve control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101121526A CN100547230C (en) | 2006-08-15 | 2006-08-15 | Valve control mechanism |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101404938A Division CN101550848B (en) | 2006-08-15 | 2006-08-15 | Valve control mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN101126331A true CN101126331A (en) | 2008-02-20 |
| CN100547230C CN100547230C (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101121526A Expired - Fee Related CN100547230C (en) | 2006-08-15 | 2006-08-15 | Valve control mechanism |
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| CN (1) | CN100547230C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313064A (en) * | 2010-06-30 | 2012-01-11 | 株式会社电装 | Valve control equipment |
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2006
- 2006-08-15 CN CNB2006101121526A patent/CN100547230C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313064A (en) * | 2010-06-30 | 2012-01-11 | 株式会社电装 | Valve control equipment |
| CN102313064B (en) * | 2010-06-30 | 2013-08-14 | 株式会社电装 | Valve control apparatus |
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| Publication number | Publication date |
|---|---|
| CN100547230C (en) | 2009-10-07 |
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Granted publication date: 20091007 Termination date: 20210815 |