CN105473918A - Linear valve actuator system and method for controlling valve operation - Google Patents
Linear valve actuator system and method for controlling valve operation Download PDFInfo
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- CN105473918A CN105473918A CN201480043886.6A CN201480043886A CN105473918A CN 105473918 A CN105473918 A CN 105473918A CN 201480043886 A CN201480043886 A CN 201480043886A CN 105473918 A CN105473918 A CN 105473918A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
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- Valve Device For Special Equipments (AREA)
- Magnetically Actuated Valves (AREA)
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Abstract
The system, according to one embodiment of the present invention, comprises a stationary coil linear motor to drive a valve with a stem comprising a ferromagnetic property. The linear motor moves the valve in response to control governed by an electronic valve control computer. The valve is movable between a closed position at a selectable rate of both acceleration and speed for a selectable distance ("lift") to a second selectable open position, including all position variations between the fully open and fully closed states. Valve position, velocity and acceleration can be varied both during a valve stroke and from one stroke to the next, as controlled by the logic programmed on a non-transitive memory of the electronic valve control computer.
Description
Preference
The application is the U.S. Patent application No.13/290 submitted on November 7th, 2011, and the part continuation application of 353, this U.S. Patent application is all attached to herein by by reference.
Technical field
The present invention relates generally to valve actuation system, and relates more specifically to the valve system that linear electric machine activates and the control system therefore related to for internal-combustion engine and other application.
Background technique
Now, fossil fuel is that most Modern Internal-Combustion Engine (ICE) provides power.But be scarce resource from the hydrocarbon fuel that oil and other raw material derive, and many people think, this fuel in the car widely use the climatic change that result in because there is combustion by-product and do not wish to produce.Therefore, for improving the efficiency of Modern Internal-Combustion Engine, there is huge pressure.The demand of raising the efficiency also is subject to the driving of government quota, regulation and the tax revenue relevant with fuel consumption and CO2 emission.And this with the ever-increasing demand improving vehicle safety is existed simultaneously, a rear demand usually increases weight thus impairs efficiency.
The current procedures that raising ICE efficiency is taked can increase sizable cost and complexity, reduces reliability, power and cornering ability simultaneously.Such as, repeatedly attempt therebetween adding adjustable to the operation of suction valve and/or outlet valve in the operation cycle of ICE.
Traditionally, the suction valve of ICE and outlet valve (also referred to as poppet valve) are activated by one or more camshaft, the one or more camshaft is mechanically driven with the engine speed of half by ICE bent axle, thus to rotate synchronous mode with ICE and to operate these valves in the mode being relative to each other in stationary phase.It is also known that replace poppet valve with rotary valve, again mechanically drive these valves by this bent axle, and it is servo-actuated in ICE crankshaft rotating rigidly that this valve is operated.
Camshaft profile defines the timing of valve opening/closing motion.Camshaft design is a kind of application of balance, this is because given camshaft profile only can be optimized for very narrow crankshaft speed scope (with rotation per minute (rpm) for unit is measured).Thus, must carry out compromise so that easily start in the velocity range of broadness and operate, the whole efficiency that reduces ICE and these are traded off and need that there is great complexity.
In addition, mechanical camshaft has the time (persistence) that valve moves (lift) and valve is opened of fixed amount.The opening time of valve and shut-in time are also fixed rigidly by mechanical drive train camshaft wheel exterior feature of unifying.The camshaft that interpolation is additional and valve allow to optimize for a camshaft/valve system of low speed and another camshaft/valve system for high speed, but this also needs to be traded off, to allow to be easy to start and broad speed range of operation.
Know further, camshaft can by by such as hydraulic bidirectional the various ways of driving mechanism rotating this camshaft and so on rotatably to advance relative to crankshaft rotational position and/or slow down.This is referred to as this cam " phasing ".Phasing facilitates the operation of ICE under multiple time, temperature, state, load and height.As same well-known, strengthen by modulating valve lift in many ways the form that engine timing is regulated further.But this system has suffered from the complexity that improve.Such as, improve the whole required accuracy of manufacturing in many parts, which increase cost and fault point.
In addition, the exact viscosity of the hydraulic fluid operated required for many parts further increases cost and maintenance cost.Required, make this valve actuation system by engine oil with operating required hydraulic oil.But, even if the oil meeting current API and SAE specification also may not have enough accurate viscosity to meet the demand of these application.This needs to use specific lubricant oil, which has limited driver and obtains the ability filled it up with oil, implement himself oil change, and add vehicle maintenance cost.
The other problem utilizing above-mentioned camshaft phasing to bring is valve timing, valve endurance and valve stroke are fixing.These parameters only can slightly be changed, and this change needs expensive and complicated technology.
Carry out some shortcoming attempting overcoming above-mentioned technology and achieved independently valve operating time and endurance.Such as, U.S. Patent No. 4,009,695 disclose a kind of program valve system for internal-combustion engine.This patent teaches a kind of device for valve operation independent of crank position, but suffered from as the intrinsic problem of the hydraulic operation of valve.Especially, valve operates to comprise and makes this valve in not controlled mode from the circulation being opened to cut out.Thisly operate in this valve of special damage and valve seat when valve cuts out.Equally, the length of stroke (that is, valve stroke) of hydraulic motion is immutable in this mechanism.
U.S. Patent No. 6,736,092 discloses a kind of internal-combustion engine being equipped with electronics controlled hydraulic system for the suction valve of motor and/or the variable actuation of outlet valve.Especially, this patent teaches the use of the standard cams axle of the mechanically servo-actuated bent axle in ICE, but between this camshaft and this valve, be additionally furnished with electronics controlled hydraulic lift device.Pass in and out this lift device by electronic control hydraulic fluid, the opening and closing time of this valve and the lift of this valve can be controlled to a certain extent.But this layout is limited to the operation of mechanically servo-actuated camshaft, and such as, the lasting a very long time can not be opened at maximum lift place by order valve, or open in the time different from camshaft plan opening time.
Attempt by driving with the hydraulic pressure applied by electronic equipment this valve to open and close, and the operation of ICE valve is located independent of bent axle.E-command is sent by control unit, and this control unit receives input signal from motor and relevant system sensor.But this system still has the significant drawbacks as will be described hereinafter.
U.S. Patent No. 5,572,961 disclose a kind of electro-hydraulic equilibrium valve motion without in cam valve mechanism.This patent teaches the most simplification that a kind of hydrovalve for ICE valve controls and uses the operation of the ICE of hydraulically operated ICE valve.Use high hydraulic pressure to promote this valve along a direction, low hydraulic pressure is combined to cushion with balance spring item and stops ICE valve to move simultaneously.But the multiple hydrovalves of each ICE valve control, balance spring and multiple hydraulic pressure be to the system increases great complexity.In addition, this system is utilized to be difficult to control the change of this ICE valve stroke.
U.S. Patent No. 6,729,279 disclose a kind of equipment at least one engine valve in controlling combustion engine.This patent teaches the hydraulic control valve as controlled by control system in ICE.Instructing, upper chamber should be filled with fluid to close this ICE valve and lower chamber should be filled with to promote this valve.A shortcoming of this pattern of mobile ICE valve is that this hydraulic fluid control valve only can be in open mode or closed condition.This patent teaches, this ICE valve from open shift to closedown and vice versa time, " closure " can be set in hydraulic line to regulate overall movement (lift) and the movement velocity of this ICE valve.This patent is also by utilizing complicated device to attempt realizing the demand that this damping solves the ICE valve for damping force hydraulic operation.
Also attempted operating ICE valve by Pneumatic actuator.Equally, this structure can activate these valves independent of the mode of ICE crank position.Such as, in U.S. Patent Application Publication document No.2013/0098337A1, disclose a kind of so-called free valve system.This system uses the air being conducted through electrically operated control valve to open and close to promote ICE valve.The major defect of this system is, ICE valve clashes into their positive stop when opening, and clashes into valve seat equally when closing.This shock at a good pace causes the mechanical deterioration to valve.
Carry out the another trial eliminating the defect of crank operation valve, to use computer control to operate these valves electrically in the mode similar with electronic fuel-injection system.Up to now, all these comprises the solenoid of some forms activated for valve and comprises damping device.Solenoid operates by opening and close completely its effect device thereon completely.Solenoid cannot be controlled so as to, and moves or change speed when opening/closing with variable speed.In order to change opening speed, stop the unique method of speed, shutdown rate or move distance (lift) to be utilize external mechanical devices in solenoid operated system, these external mechanical devices add the overall complexity of this system.This solenoid can be understood with reference to solenoidal example to arrange and shortcoming.
Such as, U.S. Patent No. 4,794,890 disclose a kind of electromagnetic valve actuator.This patent teaches and use a kind of bistable state electromechanical transducer so that this valve in mobile ICE.This patent teaches the damping of some forms needed when transition (opening or closing) ending of valve.Damping device is disclosed as the mechanical spring of damper and fluid damper.Although the present invention's control ICE valve opening and endurance, it does not provide variable lift, and this variable lift is for being convenient to easily to start, dallying and low-speed handing is preferred.The damping proposed by the present invention is complicated equally and proposes integrity problem.
U.S. Patent No. 6,247,431 disclose a kind of solenoid-driven equipment for internal-combustion engine.This patent teaches two solenoids using and be formed on ICE valve rod, open this valve and this valve of closedown for one.In addition, this valve is remained in normally closed position by the spring on this valve.Spring cushions opening of this valve by being used for minimally, and arranges other damping or damping device of being used for valve closedown.As a result, the reliability of disclosed system is shady.Equally, the measure not providing the variable lift for this valve to regulate.
U.S. Patent No. 7,225,770 disclose a kind of electromagnetic actuators between boundary with intrinsic decelerating actuation.Although this patent attempts to utilize a structure again with coil, armature and mechanical spring of solenoid system to solve the shortcoming of conventional valve actuation system.Being added with the coil of ICE valve position sensing and coil current control and the structure of armature and position is to the previous improvement attempted, and destroys to prevent valve.But reliability remains problem, and again, the device of modulating valve lift is not set.
U. S. Patent 5,983,847 and U. S. Patent 6,293,303 all disclose use moving coil with activated valve.But the motion of this coil and important supporting structure thereof and attachment hardware need undesirably large coil dimension and powerful electric drive system.The respective quality of drive system, size, required excessive driving force and complexity make this layout for many application of such as modern IC E and so on be unpractical, can't afford and be insecure.
Thus, still need to provide a kind of valve actuation system for ICE, method and apparatus, which reduce cost, weight and complexity, the independence simultaneously provided for multiple valve controling parameters controls.
Summary of the invention
The present invention solves some above-mentioned defect by providing a kind of device, method and system utilizing linear electric machine to carry out activated valve, and these valves comprise the valve rod of stationary coil and translation so that with the motion of pinpoint accuracy and speed variable ground control valve.If needed, the speed of this valve and position constantly can be changed therebetween between stroke and at single stroke.This device and system can be realized in the packaging of relative small size.In addition, the motion of this valve can be controlled (EVC) computer control by electronic valve.Multiple sensor provides feedback to this computer, and this computer based is in sensor input and the logic that is programmed in the non-transmission internal memory of this computer to activate this valve.
System according to an embodiment of the invention comprises stationary coil linear electric machine to drive the valve with valve rod, and this valve rod comprises ferromagnetic characteristic.This linear electric machine moves this valve in response to the control by computer management.This valve for can the acceleration of chosen distance (" lift ") and the speed selected of speed move between closed position and the second selectable open position, can comprise all change in location be between full open position and buttoned-up status therebetween.Valve position, speed and acceleration can be changed therebetween and between stroke at valve stroke.
Foregoing invention content is not intended to limit the scope of the invention, or describes each embodiment of the present invention, aspect, embodiment, feature or advantage.The detailed technology of inventing for this theme and preferred embodiment are described by the following passage of accompanying drawing, understand the feature of the present invention for required protection for those skilled in the art well.Institute it is realized that, feature mentioned hereinbefore and feature commented on hereinafter not only can be used in the combination illustrated, and can be used in other combination and application, or to be used alone, and not to deviate from scope of the present invention.
Brief Description Of Drawings
Fig. 1 is the cross-sectional side view of the valve assembly according to some exemplary embodiment.
Fig. 2 is the perspective view of the valve assembly according to some exemplary embodiment.
Fig. 3 is the perspective cross-sectional view of the valve assembly of Fig. 2.
Fig. 4 is the front elevation of the valve assembly of Fig. 2.
Fig. 5 is the side view of the valve assembly of Fig. 2.
Fig. 6 is the top view of the valve assembly of Fig. 2.
Fig. 7 is the perspective view of the two valve components according to some exemplary embodiment.
Fig. 8 is the perspective cross-sectional view of the two valve components of Fig. 8.
Fig. 9 is another perspective view of the two valve components of Fig. 8.
Figure 10 is the perspective view of the two valve components of Fig. 8, and it shows one in valve in cross-section.
Figure 11 is the top view of the two valve components of Fig. 8.
Figure 12 is the cross-sectional side view of the valve assembly according to some exemplary embodiment.
Figure 13 is the skeleton diagram of the parts of linear valve actuator according to some exemplary embodiment.
Figure 14 is the opposing party's block diagram of the valve actuation system with the EVC controller for ICE according to some exemplary embodiment.
Figure 15 is the flow chart of a kind of software program logic for linear valve actuator according to some exemplary embodiment.
Figure 16 is the logic diagram of a kind of valve opening/closing sequence according to some exemplary embodiment.
Figure 17 is a kind of process flow diagram according to some exemplary embodiment.
Although the present invention can be changed into multiple modification and alternative form, its details is exemplarily illustrated in the accompanying drawings and is described in detail.But, it is to be understood that be not intended to limit the invention to described certain exemplary embodiments.On the contrary, the present invention is intended to cover all modification, equivalents and the replacement scheme that fall within scope as defined by the appended claims of the present invention.
Embodiment
In the following description, the present invention is explained with reference to various exemplary embodiment; But these embodiments are not intended to limit the invention to any particular example described herein, environment, application or specific embodiments.Therefore, the description of these exemplary embodiments is only provided for purposes of illustration, and unrestricted the present invention.Linear electric machine valve actuating assembly of the present invention and system can be configured to operate any piston valve.Such as, can fill at the automatic fluid of process control and medical applications, container and adopt this valve system in blood pumping etc.Another particularly advantageous application activates for the valve of internal-combustion engine (ICS), and above-mentioned internal-combustion engine comprises Otto engine and Diesel cycle engine and modification (such as, miller cycle) thereof.
The lift of each valve in ICE, endurance and timing can be regulated independent of speed of crankshaft and independent of the actuating of any one in other valve.Thus, such as, have and each component of this paired valve can be made to open and close with different timings, endurance and lift for two suction valve of each cylinder and/or the motor of double air valve, for realize running through this motor whole speed range of operation needed for burning and discharge characteristic.Valve opening/closing operation also can by controllably damping to improve reliability.Compared with previously as discussed in this article improving the trial of valve actuation system, this assembly and system were relative simple, lightweight and cost is low equally.In one embodiment, this space package is about 4 inches and diameter is 1.5 inches.But, other Package size can be adopted, and do not deviate from scope of the present invention.
Control valve operation, electric control device (profit is as the electronic valve controller (EVC) in ICE application) control timing and the motion of this valve based on the logic occupy in the internal memory of this control gear.As hereinafter by discussing, input variable can be provided to this control gear, controls with the compound movement of the multiple situation providing those situations of being suitable for such as to occur in the work cycle of ICE and so on.
Can in computer program or the form of software code according to the behavior discussed below herein of some embodiment of the present invention, module, logic and method step, this computer program or software code are stored on the machine readable media (or internal memory) of the tangible or non-delivery type communicated with control gear, these machine readable medias comprise processor and internal memory, perform these codes to implement described behavior, function, characteristic sum method.What those skilled in the art will recognize that is, these operations, constructional device, behavior, logic, method step and module can be implemented in software, in firmware, in special digital logic and in any combination, and do not deviate from of the present invention as in claims the spirit and scope stated.
With reference now to Fig. 1, provide diagram with the parts of diagram according to the valve assembly 100 of one exemplary embodiment of the present invention.Valve 102 is a kind of poppet valves.The valve rod 106 that it comprises valve head 104 and upwards extends from this valve head.These valve portions 104 and 106 usually but must not be integrated into single parts.Valve rod 106 can be solid or hollow, makes it can be filled with another kind of material (such as sodium), to strengthen heat trnasfer.
Valve 102 comprises a kind of ferromagnetic material at least partly, and it magnetically can be activated in response to the applied field of magnetic coil.Develop the magnetic alloy of the Curie temperature with the temperature that the valve be applicable in ICE is subjected to.
Other valve system variable can be modified, and does not deviate from scope of the present invention, and these valve system variablees comprise the length of valve rod, the diameter of valve head and magnetic coil size and density.
Head 104 is shaped to the valve seat of the head meeting ICE, and corresponding port is sealed in firing chamber by it.
Valve guide 108 in the head of ICE engages this valve rod to guide and to stop the motion of this valve.Valve guide shown in accompanying drawing represents the cylinder head that this valve is fitted into them, and for clarity, removes this cylinder head.
A kind of lower bearing 110 is disclosed above this valve guide.The motion of lower bearing 110 around this valve rod 106 and by preventing the transverse movement of this bar 106 from guiding this valve further.Upper bearing 112 more distally arranges along valve shaft and constructs in the mode identical with lower bearing and work.And if bearing almost eliminates any transverse movement needs of this valve together, can this valve along the longitudinal axis of this valve rod as represented by the arrow on Fig. 1 controllably linear oscillation time, restriction rotary motion.
Between lower bearing 110 and upper bearing 112, be provided with rigidity with static coil block 114.This coil block 114 comprises multiple wires (such as, the copper) winding 115 around the valve rod 106 of this valve.Coil (such as, voice coil loudspeaker voice coil) to be wrapped, to comprise the magnetic flux by encouraging this coil 114 to produce by outside steel (or other suitable material) housing 117.The wire comprising this coil can be in the epoxy packed, is in required form and preventing pollution and oxidation to be maintained by this coil.Air gap 119 is limited between this valve and the internal surface of this coil block 114.
Direct current (DC) voltage is applied to coil 114 and causes this valve rod 106 according to the polarity of applied voltage along a direction or along other direction translation linearly.Putting upside down this polarity makes the direction of motion put upside down.Equally, the current value being applied to this coil and magnitude of voltage can be changed.Thus, be input to the input of the voltage of this coil, electric current and polarity change the position of this valve, speed and acceleration to heavens by regulating.This computer can change these inputs to realize any required motion feature of this valve.
This valve controllably moves between closed position and open position, this defines the stroke of this valve.In ICE application, define this closed position, in this closed position, this valve head is extended downwardly into valve seat and is closed the corresponding air inlet port/exhaust port in this head.Define this open position, in this open position, this valve head is in apart from its furthest travel point farthest of the port in this head.By the operation by coil block as disclosed herein, immediately precision the neutral position of any amount between these end positions can be obtained equally.And this coil block can selectively be encouraged, so that in the selected moment, with selected distance, move this valve with selected velocity and with selected acceleration diagram, all Selected Factors are all determined by the computer of the operation controlling this coil.
Valve assembly is as discussed in this article favourable, this is because eliminate the shortcoming of the driving mechanism of customary cam operation.Such as, weight, wrapper and complexity is decreased.Reliability is greatly improved, this is because eliminate wearout parts.Control and the controllability of the increase of this valve operation make motor can be optimized for discharge amount, idle running, moment of torsion and power by during the gamut of possible driving situation and work cycle simultaneously.And compared with moving coil valve actuator, the present invention allows the gamut running through engine speed to carry out operating and can utilize the driving force of reality to operate, and does not add mass of coil to reciprocating mass.
Valve actuation system disclosed herein all provides constant force on whole valve stroke.When the response time quickly (such as, is less than one millisecond), stroke can be little.This valve actuation system operates with very high speed, and not with turn (cogging) or the fluctuation of unlimited decomposing force (infiniteresolution), this general arrangement and other variable cam timing are attempted being separated by this.Variable cam timing only changes timing but not stroke.The present invention is based on close loop maneuver utilizes unlimited settings to implement both.Close loop maneuver makes linear electric motor device be coupled with feedback transducer to provide information to computer, and this computer carrys out modulating valve actuation parameter according to the rule-based logic be programmed in the internal memory of computer.But closed loop mode operation is without the need to being applicable to all embodiments.
Valve position sensors 116 is placed by the valve rod 106 along this valve, such as, be placed between coil block 114 and upper bearing 112.This valve position sensors is to this computer supply valve position information.Position data can be used to as desired by the logic of computer, calculate this valve speed and acceleration.More specifically, this valve position information can be used to calculate following operating parameter: 1. the stroke in units of inch from closed position to open position; 2. the speed in units of inch per second from closed position to open position; 3. the acceleration in units of inch every square second from closed position to open position; 4. keep the endurance in seconds that this valve is opened; 5. from open position to closed position relative to the stroke in units of inch of starting point; 6. the speed in units of inch per second from open position to closed position; 7. the acceleration in units of inch every square second from open position to closed position; And the endurance in seconds that 8. keep this valve to close and open.Also can calculate other operating parameter and linear module, and not deviate from scope of the present invention.
In one exemplary embodiment, the acceleration of this valve can be about 320 feet per seconds
2(98.1m/s
2).The stroke (stroke) of this valve can be to the maximum about 0.5 inch (12.7mm), and the speed of this valve can be 300 inches (7.62m/s) about per second.And the consequent time completing a stroke is about 20-30 millisecond.Certainly, other operating parameter can be utilized, and do not deviate from scope of the present invention.
In one embodiment, the parts of valve assembly 100 are secured to shell holder 118.This shell holder also comprises mounting flange 120 (as shown in Fig. 2 to Figure 11), this valve assembly to be fastened to the head of ICE.This mounting bracket can be configured to allow this valve system to be firmly arranged in desired location and orientation as required.In alternative embodiments, this mounting bracket can fully be removed.In yet another alternative, mounting flange or erecting device can be placed on the outer surface of housing 117.
With reference now to Fig. 2 to Fig. 6, show several views of the valve assembly 100 of the ICE valve assembly for comprising single valve.Can see that valve rod 106 stretches out above upper bearing 112.Also can see that valve head 104 extends in the below of valve guide 108.Can see that lower bearing 110 is positioned at the top of valve guide 108.Coil block 114 is shown as and is placed between bearing 110 and 112.Position transducer 116 is placed on the below of upper bearing 112, makes it " can see " valve rod 106 of this valve.
Shell holder 118 comprises and to be placed between upper bearing 112 and coil block 114 and the horizontal part section 122 be particularly placed between position transducer 116 and coil block.Horizontal part section 122 comprises valve rod 106 can through the hole of location roughly placed in the middle wherein.Support 118 also comprises the vertical component effect section 124 of the substantial distance crossing over this coil block.Outward extending mounting flange 120 is placed on the lower end of this vertical component effect section 124.This flange 120 also comprises hole 126 so that this valve assembly to be fastened to the head of ICE.Multiple valve assembly parts can be fastened to this support 118 directly or indirectly.
A more than independent valve can be comprised according to the valve assembly of additional embodiment of the present invention.Can by two, three, a four or more valve is attached in single component.Such as, a kind of two valve components has been shown in Fig. 7 to Figure 11.These parts parts that are discussed with previous and that mark in the accompanying drawings are identical.But valve member tightens together by single support 118 now.Each valve continues the coil comprising himself, allows thus to be activated independently by computer and control.Each valve also has the position transducer 116 of the correspondence of himself.Mounting flange 120 comprises multiple fixed hole 126 this unit firmly to be installed to the head of ICE.
With reference now to Figure 12, provide a width figure to illustrate the parts of the alternative exemplary of valve assembly 100.Valve rod 106 is roughly T-shaped, it is comprised be positioned over the plane member 107 of the end relative with head 104.Fixing or static end coil 113 is adjacent to this plane member 107 and places.Act on being combined as of end coil 113 on T-valve bar 107 and side coil 114 (being similar to previously described embodiment) needs the application of more power to provide larger power more.Also can comprise as in foregoing figures the bearing (not shown) that provides.
With reference now to Figure 13, illustrate multiple parts of this valve actuation system.The output of position transducer 116 (being labeled as LVA position transducer) is connected to input/output module 128.This input/output module is a kind of two-way signaling regulator from USB form to serial form and transducer.Position sensor information is converted to a kind of signal being fed into computer 130 by this input/output module 128, and wherein, it is used to assess the control operation for this valve.
Computer 130 comprises the tangible internal memory of processor and non-delivery type.This computer is electrically connected to position transducer 116 and coil block 114.Connection to position transducer 116 provides power for this sensor.This computer is also optionally powered for this coil 114 according to the rule-based software code occupy in the internal memory of computer.As mentioned above, this computer optionally encourages this coil block 114 to move to special position with specific speed and acceleration in particular moment to cause this valve 102.Each in these parameters is controlled individually for each valve, and also can be changed during single stroke and be changed between stroke.
Such as, this valve can just in time before it reaches valve seat by controllably reduction of speed (deceleration), make it not to clash into this valve seat energetically, this energetically shock can be inefficient and this valve may be damaged.The life-span of motor is extended compared with the conventional valve assembly of the motion of this this valve of buffer attribute and not damping.Equally, this damping can be supplied to, and without the need to additional springs or other device in order to this valve of damping.Which reduce the weight of this valve system, complexity and holistic cost.
" application " of recording in Figure 13 is ICE.The number of valve assembly can by according to be present in the cylinder in this motor quantity and the quantity of the valve of each cylinder that adopts different, and do not deviate from scope of the present invention.Usually, there is at least one suction valve and an outlet valve in each cylinder.And each cylinder of most Modern Engine has two suction valves and two outlet valves.
Figure 14 with the addition of additional detail to the skeleton diagram of Figure 13, to illustrate the Comprehensive Control of being carried out engine parameter by computer.Here, each as discussed in this article such in suction valve and outlet valve is controlled by linear electric machine.Each valve 102 also comprises himself valve position sensors 116.Sensor 116 and valve actuator are connected to computer 130 separately, as previously discussed.Computer 130 is operatively coupled to fuel injector 132 and plug ignition system 134 in addition.Thus, this computer can control the whole combustion incident (such as, air inlet, fuel injection, spark and exhaust) in each cylinder effectively.
This valve position information is collected by inputting interface module 128 again.This module also can receive information from the additional sensor arranged throughout ICE (jointly 136), and these information comprise such as: bent axle upper dead center (TDC); Delivery temperature; Oxygen ratio; Mass Air Flow; Throttle position; Atmospheric pressure; Ambient temperature; Fuel injector volume and timing; And spark.The feature that this information is sprayed for controlling the motion of this valve, spark and fuel by the rule-based control logic that occupy in computer 130, to realize special purpose (such as efficiency) and for the power stage from the determined given group of situation of the information collected by above-mentioned multiple sensors.This rule-based method is more than for regulating the more conventional method based on form of the parameter in conventional ICE more customizable and be more revisable.Owing to utilizing actual parameter to perform calculating in real time, and perform calculating not by predetermined look-up table value, therefore, the output produced is also much accurate.
Figure 15 is the flow chart of the software program logic for linear valve actuator system according to some exemplary embodiment.This can by manufacturer in order to by initial designs and programming during change vehicle operating parameters with the graphic user interface of control system efficient communication.First diagnostic application 200 is started.This application is presented on for the graphic user interface 202 with customer interaction.This is applied as user and presents multiple button and instrument 204, comprises the numerical information display of startup, throttle adjustment and critical operational parameters, such as engine RPM.Multiple background process is also when starting this diagnostic application 206, and this multiple background process comprises initialization data storehouse and implements the renewal of transducer receivers.
Be provided with a kind of sensor hardware interface device 208.It is also converted to the appropriate format used by processor when performing this programmed logic by its collecting sensor data 210.
When pressing start button 212, igniting sequencer program is activated 214 and diagnostic application display update is recycled execution 216.At socket place or the signal 218 receiving sensor via universal serial bus.In addition, the signal from working procedure is received working cell 220.
Each in process steps 214,216,218 and 220 is sorted by the corresponding processor queue 215,217,219 and 221 of each leisure.
Igniting sequential logic 214 runs via the queue 215 on the processor such as managed by operation system logic 222.This operation system logic as required also with database 224 interaction effect.Valve connector hardware 226 receives igniting sequence data 222, and valve control signal can be sent to valve actuating apparatus subsequently, such as described herein.
This diagnostic application display update circle logic via as by operation system queue 217 on the processor that manages perform 228.In step 230, sensor upgrades and is such as delivered to database 224 as SQL statement, so that the value in updated data table.Equally, 232 special application program and derivative processes are managed.
The use of diagnostic application is by the development of the final production algorithm that causes being stored in the internal memory of computer and look-up table.This diagnostic application is used for development system.Production system is hidden this diagnostic application and is automatically operated.Can provide this diagnostic application that Maintenance Man maybe can be made to utilize compatible scanning tools to access this diagnostic application to Maintenance Man.
With reference now to Figure 16, illustrate the logic of the valve opening/closing sequence for single valve.This logic is replicated for each valve in many valves embodiment, and each valve all can be controlled individually.Valve timing sequence data be read 300 and be input to closing control circulation in 302.This controlled circulation comprises opening this valve to specific length or the instruction 304 of height and the instruction 306 for closing this valve.If valve instruction 304 will be opened give this valve actuator, then open after sequence 308 succeeded by this actuator.If give this valve actuator by cut-off valve instruction 306, then after shutdown sequence 310 succeeded by this actuator.
Opening in sequence 308, this controller utilizes controlled this coil of the first voltage drive to move along the direction away from valve seat 312 to cause this valve armature (valve rod 106).This valve accelerates 314 with initial rate thus.At predetermined travel point place, computer or controller utilize this coil 316 of voltage drive with opposite polarity to slow down to cause this valve, until this valve stops at the open position (the stroke degree of depth) of regulation.This controller or computer encourage this coil to be remained in appropriate location by this valve subsequently, until receive shutdown signal 328.
In shutdown sequence 310, this controller utilizes the first controlled voltage to encourage this coil, to accelerate this valve 320 with the first acceleration towards closed position.At predetermined travel point place, this controller utilizes this coil of the second voltage drive with opposite polarity being just positioned at the deceleration of the position directly over valve seat for 0 322 to cause this valve.This controller utilizes tertiary voltage to encourage this coil subsequently, to make this valve gently be resting on to remain on its valve seat and by this valve in installation position 324.As selection, soft settle step 324 to be removed and deceleration steps 322 can be used to fully settle this valve, now, polarity of voltage is switched with in being maintained in its closed position by this valve, until receive OPEN.
Figure 17 provides by the perspective view of several parts of ICE management system the chart of several parts that valve activates technological process, and these valves activate technological process and comprise the valve timing sequencer program of computer, coil actuator, sensor, internal memory and engine efficiency module (it can be the software be stored in the internal memory of computer).This timing sequencer program comprises abovementioned steps: read time series data 300, enter closed-loop sequences 302 with order this valve open 304 and order this valve close 306.This coil actuator logical operation comprises abovementioned steps: open sequence 308, keep this valve to open 318, shutdown sequence 310 and keep this valve to close 324.
When ICE operates, their corresponding data are sent to (comprising throttle position, closure air bypass, engine coolant temperature, exhaust oxygen level, airometer, detonation sensor, baroceptor, ignition mechanism, ignition module, exhaust gas recirculatioon (EGR) closer, fuel injector, clutch, vehicle load etc.) the sensor module memory region 328 of the memory modules 330 of computer by this multiple sensor 326.Igniting sequence data 332 is also stored in internal memory 330.
Engine efficiency module 334 or logic to be also comprised in this computer or as the part of standalone module.This module can be formed to be programmed in the executable software code in non-transmission internal memory, and this executable software code can be read by the processor comprised in a computer and perform.This engine efficiency module 334 comprises from the step of some or all internal memory 336 read sensor data and igniting sequence data.According to data retrieval and pattern match step 336, identify pattern in retrieval data and in region of memory 332, upgrade igniting sequence data.This module 334 terminates 340 subsequently, until be devices may wake up periodically 340.Periodic wakeup signal can be provided by timer, and this timer is in response to every several clock cycle of the processor of often several turns or the computer of set time cycle (such as, several times per second) or bent axle.Said system and logic provide control gear, and this control gear is based on multiple operating conditions and the variable dynamic ground timing of modulating valve and motion.
Utilize this system logic, valve position, speed and acceleration can be changed during valve stroke and between stroke, as by the logic be programmed on the non-transmission internal memory of electronic valve computer for controlling control.
Although be considered to the most practical and preferred exemplary embodiment describes the present invention in conjunction with current, will understand is that to those skilled in the art, the present invention is not limited to disclosed exemplary embodiment.To those skilled in the art will it is readily apparent that, when not deviating from spirit and scope of the present disclosure, many amendments and equivalent arrangements can be made to it, this scope should be consistent with explaining the most widely of claims, to contain structure and the product that there be equivalence in residence.
For explaining the object being used for claim of the present invention, clear stipulaties does not quote the regulation of United States code the 35th volume Section 112 the 6th section, unless state in the claims particular term " for ... device (meansfor) " or " for ... step (stepfor) ".
Claims (20)
1. a linear activated electromagnetic valve component, comprising:
Housing, described housing comprises and is limited to the stroke hole in described housing by axis along the longitudinal, and described housing comprises;
Valve member, described valve member comprises valve rod and distal tip, and at least described valve rod comprises ferromagnetic material;
Stationary coil, described stationary coil comprises multiple wire winding, described multiple wire winding around described valve member described valve rod at least partially and between described winding and the described valve rod of described valve, form air gap; And
Power supply inputs, and described power supply input and described fixed coil efficient communication, make optionally to apply electric current to described fixed coil and correspondingly activate described valve rod and cause described valve rod to be advanced linearly along the described stroke hole of described housing.
2. assembly according to claim 1, wherein, described assembly also comprises at least one bearing, and at least one bearing described is suitable for preventing described valve rod to be period vibration of advancing in described stroke hole.
3. assembly according to claim 1, wherein, described assembly also comprises valve guide.
4. assembly according to claim 1, wherein, described housing is arranged in the head of internal-combustion engine.
5. assembly according to claim 4, wherein, described distal tip be suitable for optionally with described head seal.
6. assembly according to claim 1, wherein, the described valve rod of described valve member is general hollow.
7. assembly according to claim 1, wherein, the described valve rod of described valve member is roughly solid.
8. assembly according to claim 1, wherein, described assembly also comprises electronic valve computer for controlling, and described electronic valve computer for controlling and described power supply input efficient communication, optionally to activate described valve rod.
9. assembly according to claim 8, wherein, described electronic valve computer for controlling can apply optionally polarity of voltage to control the direct of travel of the described valve rod of described valve member.
10. a linear valve actuator system, comprising:
Housing, described housing comprises and is limited to the stroke hole in described housing by axis along the longitudinal, and described housing comprises;
Valve member, described valve member comprises valve rod and distal tip, and at least described valve rod comprises ferromagnetic material;
Stationary coil, described stationary coil comprises multiple wire winding, described wire winding around described valve member described valve rod at least partially;
At least one valve position sensors; And
Electronic valve control systems, described electronic valve control systems and described fixed coil and at least one valve position sensors efficient communication described, optionally to apply electric current to described fixed coil, thus correspondingly activate described valve rod and cause described valve rod to be advanced linearly along the described stroke hole of described housing.
11. systems according to claim 10, wherein, described system also comprises at least one bearing, and at least one bearing described is suitable for preventing described valve rod to be period vibration of advancing in described stroke hole.
12. systems according to claim 10, wherein, described housing is arranged in the cylinder head of internal-combustion engine.
13. systems according to claim 10, wherein, described electronic valve computer for controlling can apply optionally polarity of voltage to control the direct of travel of the described valve rod of described valve member.
14. systems according to claim 10, wherein, described electronic valve control systems comprises processor and internal memory, the data of described memory storage from multiple sensor and the software code for the operation that manages described electronic control system, described code comprises the logic for ordering described valve to be opened, described logic is by applying the first polarity to accelerate described valve member with the first acceleration to described coil, and start the polarity applied to described coil put upside down described valve member is slowed down, carry out valve described in order open until it arrives predetermined open position.
15. systems according to claim 10, wherein, described electronic valve control systems comprises processor and internal memory, the data of described memory storage from multiple sensor and the software code for the operation that manages described electronic control system, described code comprises the logic for ordering described valve to be closed, described logic is by applying the first polarity to accelerate described valve member with the first acceleration to described coil, start the polarity applied to described coil put upside down described valve member is slowed down, until it arrives the precalculated position being adjacent to valve seat, and start tertiary voltage gently to settle described valve member and it is remained in closed position.
16. 1 kinds of controlling methods for valve, described method comprises:
Apply to stationary coil the first voltage being in the first polarity, open acceleration along opening direction with first to make described valve and accelerate;
Polarity second voltage contrary with described first voltage is applied, to make described valve slow down, until it arrives predetermined open position to described coil;
Described valve is held in described open position;
Apply polarity and described first opposite polarity tertiary voltage to described coil, close acceleration along closing direction with first to make described valve member and accelerate;
Opposite polarity 4th voltage of polarity and described tertiary voltage is applied, to make described valve slow down, until it arrives the predetermined closed position being adjacent to valve seat to described coil; And
Apply polarity and described first opposite polarity 5th voltage, gently to settle described valve, and it is remained in closed position.
17. methods according to claim 16, wherein, described method also comprises from memory modules reading valve timing sequence data, and starts described first voltage of applying and described tertiary voltage based on read valve timing sequence data.
18. methods according to claim 16, wherein, described method also comprises the data from multiple sensor is written to memory modules.
19. methods according to claim 18, wherein, described method also comprises the igniting sequence data upgraded in described memory modules.
20. methods according to claim 16, wherein, described method also comprises sensing valve position, and calculates valve speed and accekeration for having the processor of control logic to use by programming.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/963,764 US9109714B2 (en) | 2011-11-07 | 2013-08-09 | Linear valve actuator system and method for controlling valve operation |
| US13/963,764 | 2013-08-09 | ||
| PCT/US2014/049953 WO2015021163A2 (en) | 2013-08-09 | 2014-08-06 | Linear Valve Actuator System and Method for Controlling Valve Operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105473918A true CN105473918A (en) | 2016-04-06 |
Family
ID=52462036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480043886.6A Pending CN105473918A (en) | 2013-08-09 | 2014-08-06 | Linear valve actuator system and method for controlling valve operation |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3030817B1 (en) |
| JP (1) | JP6846932B2 (en) |
| CN (1) | CN105473918A (en) |
| WO (1) | WO2015021163A2 (en) |
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| CN106437926A (en) * | 2016-12-15 | 2017-02-22 | 天津梦佳智创科技发展有限公司 | Low-energy-consumption internal combustion engine rotary air valve |
| CN106594356A (en) * | 2016-12-05 | 2017-04-26 | 广东美的制冷设备有限公司 | Noise control method and system for electromagnetic valve and air conditioner |
| CN106594355A (en) * | 2016-12-05 | 2017-04-26 | 广东美的制冷设备有限公司 | Electromagnetic valve switch control method and system and air conditioner |
| CN110307389A (en) * | 2019-06-28 | 2019-10-08 | 国网浙江省电力有限公司电力科学研究院 | A kind of steam turbine based on state feedback surges valve method for diagnosing faults |
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| GB2574229A (en) | 2018-05-31 | 2019-12-04 | Fas Medic Sa | Method and apparatus for energising a solenoid of a valve assembly |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6846932B2 (en) | 2021-03-24 |
| EP3030817A4 (en) | 2017-04-19 |
| JP2016532065A (en) | 2016-10-13 |
| EP3030817A2 (en) | 2016-06-15 |
| WO2015021163A3 (en) | 2015-04-23 |
| WO2015021163A2 (en) | 2015-02-12 |
| EP3030817B1 (en) | 2020-12-09 |
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