CN104204429A

CN104204429A - Electro-hydraulic valve actuator having an alternating cam

Info

Publication number: CN104204429A
Application number: CN201280046650.9A
Authority: CN
Inventors: 维亚内·拉比
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-16
Filing date: 2012-10-11
Publication date: 2014-12-10
Also published as: KR20150014429A; CA2845080A1

Abstract

The invention relates to an electro-hydraulic valve actuator having a cylinder and an alternating cam and comprising: a valve-actuating hydraulic cylinder (2) which opens a valve of an internal combustion engine (100) using a valve-opening solenoid valve (4), a high-pressure valve-opening duct (11) and a high-pressure inflow hydraulic circuit (5), and which closes said valve using a valve-closing solenoid valve (6), a high-pressure valve-closing duct (12) and a high-pressure outflow circuit (7); and a hydraulic positive displacement pump (8) co-operating with a pump inlet non-return valve (14) and a pump outlet sealing solenoid valve (13), the outlet thereof being connected to a low-pressure circuit (9) and to a low-pressure tank (10) supplied by a replenishment pump (52) and a replenishment tank (53).

Description

There is the electro hydraulic valve actuator of reciprocal cam

Technical field

The present invention relates to a kind of electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine.

Background technique

The intake & exhaust valves of reciprocating internal combustion engine can be opened in the time that the bent axle of these motors reaches several angle position.This camshaft by motor causes with respect to the common constant position, angle of described bent axle, and the latter's position is considered to exceed 360 degree and is considered to exceed 720 degree in 4 two-stroke engines of being conceived by Nikolaus Otto and Alphonse Eugene Beau de Rochas two people such as those in 2 two-stroke engines.

For the moment that described valve is opened with respect to the position, angle of described bent axle variable, modern petrol engine comprises at least one admission cam shaft phase shifter, and comprises more and more exhaust cam shaft phase shifter.Normally water power formula of these phase shifting equipments, but be electric sometimes, and make it possible to change the angle position of described axle with respect to described bent axle.

For the most of motors by production in automobile industry, opening time, opening speed and these parameters of valve stroke the height clearly profile of the cam by activating described valve are determined.Make these changeable parameters there is very big benefit, because the filling of their countercylinders and the quality of burning have a great impact.The variability of these parameters be make source that the control of the pollutant effulent of these motors can significantly improve by.Particularly, this variability make can:

The filling of the cylinder when improving internal-combustion engine and using under throttle wide, to increase the torque in its whole engine speed range and the power of motor.This result is to obtain by making intake & exhaust valves carry out open and close in the moment that is conducive to described filling most, is especially what obtain by the aerodynamics harmony scholarship and moral conduct of considering the gas in cylinder and air inlet and the exhaust duct of motor;

Reduce the pumping loss of internal-combustion engine in the time that throttle does not use under standard-sized sheet, this is to use to replace based on the suitable rule of the open and close for suction valve of two cardinal principles below the operation of the selection by winnowing to suction valve normally operating by throttle valve and reach:

first strategy is included in the suction valve that overlaps rapidly during the aspirating stroke of motor, during this period keeping admission line in approaching under the pressure of atmospheric pressure simultaneously, the vaporization mixture of the air of this carrying capacity or requirement is stranded in the cylinder of motor making, then in firing chamber, recompress described air or mixture until before the top dead center of the piston of motor, make described air or mixture expansion until the lower dead centre place of the piston of motor.

second strategy lingeringly closed suction valve during being included in the compression stroke of motor, during this stroke, keeping admission line in approaching under the pressure of atmospheric pressure, during the aspirating stroke of motor, the air of maximal workload or vaporization mixture are introduced to cylinder, then, described carrying capacity can partly be forced to get back in described pipeline during compression stroke, until cylinder in remaining carrying capacity corresponding to the carrying capacity requiring, suction valve can this time again close.Rear a kind of strategy operation Sydney Atkinson circulation-under sub load than Otto or Beaude Rochas more effectively-and in variable compression engine, there is special benefit.

These cause the remarkable improvement of engine performance under sub load for reducing the strategy of pumping loss;

Improve stability and the quality of burning of internal-combustion engine, specifically by the turbulent flow of the gas in control combustion chamber preferably, this is for example that lift height by regulating subtly suction valve is reached.The control of this kind of improvement for example makes it possible to by improving the uniformity of the air/fuel mixture of multi point injection engine for suction valve provides little lift when the low throttle, its effect is in the time that gas passes through suction valve, to produce thinner turbulent flow, and described turbulent flow is conducive to described uniformity.This control also makes it possible to be adjusted at " rolling " motion of air in cylinder or gas, and its effect is to make this conversion of motion become tiny turbulent flow in the time of the piston arrives upper dead center of motor, thereby improves the flame propagation in development of combustion process.This kind of control also makes it possible to adjust air or is usually used in turbulent motion or " eddy current " of the gas of diesel engine, and described motion for example can regulate by the battle of two suction valves of mobile same cylinder;

The level that is included in the hot residual combustion gas in inflation by being increased in when burning reduces pumping loss and the heat loss of internal-combustion engine in the time that throttle does not move under standard-sized sheet.Described gas does not contain any oxygen and does not participate in burning, but catches the heat being discharged by described burning, and this has limited the thermal loss on wall, thereby and has limited fuel consumption.Because they are hot, thus described gas be bulky and reduced the volumetric efficiency of motor, consequently reduced at the needs of the selection by winnowing to admission line not under standard-sized sheet time for throttle.Specifically by increasing, the coincidence of intake & exhaust valves realizes in the increase of residual combustion gas level, that is to say and is increased in the time period that the intake & exhaust valves of same circulation are opened simultaneously.This makes the piston of motor can absorb live gas and combustion gas simultaneously.The realization of the raising of residual combustion gas level also can be by opening suction valve earlier so that combustion gas before being reintroduced back to cylinder during the aspirating stroke of motor, can hoard in pipeline.As another nonrestrictive example, the realization of the raising of residual combustion gas level also can be by closed row air valve earlier so that can hoard exhaust in cylinder before opening suction valve.It should be noted in the discussion above that reusing from the exhaust of last circulation in current circulation is also that a kind of strategy makes to reduce pollutant effulent, especially from the oxysulfide of diesel engine;

For providing higher compression ratio in the motor of fixing compression level, its result makes motor be used for for example drive automobile (one of them major character is that it is used to make power to change continuously) in wide range time, there is good average behavior.This realizes in the following way: effective compression level of carrying out control engine by the closure of retarded admission valve, make in the time of high capacity and low engine speed, an only part for the stroke of piston of motor is used to pressurized gas, and is used to make that described gas is swollen rises in whole stroke of piston substantially.But according to this strategy, some operation points of this motor can make the load of described motor and rotating speed situation neither produce pinking described gas compression and being expanded to the whole stroke substantially of this piston and also not produce perfect combustion;

By preventing or limit gas and be back to exhaust improve under heavy duty performance and the power of turbo charged multicylinder engine.This is to realize in the following way: in maximum possible degree, prevent from when the pressure of outlet valve in the cylinder of motor is less than the pressure in the discharge manifold of described motor opening;

Performance when improving described motor and use under low-power by the one or more cylinders of multicylinder engine of stopping using.This can realize by pass-through mode: make the intake & exhaust valves of inactive cylinder keep closing, inactive cylinder carrys out work in the mode of a series of compression/expansion of consumption little energy by this way, and the cylinder of maintenance effect can provide good performance, because they work under higher load.Should be noted that, according to this strategy, likely in a series of effect circulations of same cylinder, insert and do not act on circulation, to obtain operation of internal combustion engine more smoothly, in this case, each cylinder is only in the part-time of engine running, just to stop using, and cylinder was normally worked in all the other times;

Improve the efficiency of two stroke IC engine with the scavenging of Optimizing Combustion gas by carrying out air inlet when the ending of the stroke of expansion combustion gas.This realizes in the following way: optimize intake & exhaust valves with respect to the opening and closing point of the position, angle of the bent axle of described motor to the inflation requiring is captured in the cylinder of described motor and the residual combustion gas of required amount are remained in cylinder.This strategy may make likely to avoid using air inlet openings and/or exhaust port, because described opening is associated with the function of described motor and the various shortcomings of structure;

Improve the efficiency for the equipment of the reprocessing from the pollutant of internal-combustion engine, and no matter be 2 yuan or 3 yuan of catalyzer or particulate filter.Because described equipment is inoperative and/or only start regeneration under specified temp when the throttle wide, therefore the early unlatching of the outlet valve of described motor makes to shorten the expansion of gas, so that can apply less pressure to the piston of described motor, to improve the temperature of their exhaust.This strategy especially makes the rising of the operating temperature that can accelerate described equipment and/or gives their the required heat energy of regenerating to them;

By making it possible to reduce the degree of depth of the recess on the Sealing of piston that is conventionally arranged on reciprocating internal combustion engine, even eliminating described recess and promote the design of the firing chamber of reciprocating internal combustion engine, because the function of described recess is any collision preventing between piston and the valve of described motor.This lift height that can reduce wittingly the valve of described motor when being high at compression ratio is reached, this conventionally corresponding to described motor in the not operation under standard-sized sheet of throttle;

Various technology make likely completely or partially to control opening time, unlatching endurance and the lift height of the valve of reciprocating internal combustion engine.Camshaft phase shifter is by industrialization and tend to be widely used, but they can not be controlled and open the endurance and can not control again the lift height of described valve.But the described phase shifter more and more continually equipment variable with the lift height that makes described valve is associated.

Described equipment is sold with different brands and/or trade name.These are all discrete valve stroke altitude converters, and it comprises at least two kinds of cam profiles and continuous lift transducer.

Discrete lift transducer especially has: come from Honda company's come from Porsche company's come from " the Valvelift system " of Audi company and come from " VVTL-i " of Toyota company.

Continuous variable valve lift height speed changer especially has: developed by BMW company based on variable ratio bar or come from FIAT company's it provides the hydraulic transmission between cam and valve lifter, and described valve lifter has for the hydraulic fluid of use being turned back to the solenoid valve of container, thereby makes it possible to shorten the lift of valve in degree more or less.

It should be pointed out that variable valve device is most commonly used to suction valve, and rare in the situation that, for outlet valve.These equipment are only assemblied in one of camshaft of motor conventionally, i.e. suction valve or outlet valve, and this is mainly due to the reason relevant to cost or clutter.

We notice, when they are during for mass-produced passenger vehicle, these equipment all depend at least one camshaft all the time, so their performance directly depends on the profile of the described cam that forms described axle.

It is obviously favourable overcoming the constraint of being introduced by cam profile.The object of the equipment that Here it is so-called " without cam ".Theoretically, these equipment can be implemented any rule relevant with closure to unlatching, the lift of described valve within the restriction of being forced with how much by physics.

There is a lot of equipment in the prototype stage related domain, such as " the electromagnetic camless " that come from Val é o company, come from Cargine company " Free Valve ", by the hydroelectric facility of the Sturman of u s company and Siemens company cooperative development, or come from " the Active Valve Train (AVT of Lotus company ^tM) ".

In most of the cases, these systems with excessive or or even high surprising energy consumption and/or sound emission and/or clutter and/or cost be associated.

Other shortcoming being associated with these equipment or restriction stop or delay their industrial-scale production, such as: be difficult to ensure reliability and/or durability in the whole working life of automobile; And/or possible not enough controllability, it can cause the disturbance of valve in the time of high speed; And/or in the time that valve rests on its valve seat, lack gradual; And/or operation in trajectory pattern, it has caused unmanageable unlatching rule.

These observations are bases of the applicant's international monopoly WO2004/011780, and it has narrated a kind of " without cam " hydraulic actuator, and it makes the lift of the valve that can control reciprocating internal combustion engine, unlatching in advance and/or the retarded closing of valve.This actuator can make great majority for improve the strategy of the power of internal-combustion engine and performance and those better the strategy of the disposal of pollutants of control engine be achieved.

In addition,, with respect to this actuator, this patent is advocated reliability and the cost of production that can conform to the specification of the internal-combustion engine for mass-produced car.Particularly, this actuator comprises:

At least one oil hydraulic cylinder, it is connected with high-pressure oil passage by pipeline, and is arranged for the unlatching of at least one valve;

At least one hydraulic pressure positive-displacement pump, it comprise at least one outlet and entrance with and rotational velocity be directly proportional to the rotational velocity of the bent axle of motor;

At least one pump discharge closing feature, it makes it possible to prevent that the hydraulic fluid of discharging from hydraulic pressure positive displacement delivery side of pump from entering low pressure oil way or entering fuel tank, and can force hydraulic fluid to flow to high-pressure oil passage, this high-pressure oil passage is connected with one or more oil hydraulic cylinders of the unlatching that is arranged for one or more valves;

At least one drives valve selector, it makes the hydraulic fluid that can directly the exhaust port of hydraulic pressure positive-displacement pump be discharged by high-pressure oil passage be sent to the oil hydraulic cylinder of at least one valve to be opened, and also prevents that described hydraulic fluid is sent to one or more other valves that need to remain closed simultaneously;

At least one opening safety check, it is arranged on the high-pressure oil passage between pump discharge and the oil hydraulic cylinder of at least one valve, and it is retained in the described oil hydraulic cylinder of described valve hydraulic fluid, so that described valve is held open;

At least one closes valve selector, it makes the hydraulic fluid that described oil hydraulic cylinder can be contained be sent to the entrance of described hydraulic pressure positive-displacement pump from least one valve being held open by opening safety check, to the closure of valve is provided, and prevent from being included in hydraulic fluid in its oil hydraulic cylinder be introduced into need to remain on another valve of operating position or other valve in oil hydraulic cylinder;

And at least one pump intake anti-reflux valve, it can make hydraulic fluid from low pressure oil way or can enter the entrance of hydraulic pressure positive-displacement pump from fuel tank in the time that the pressure of low pressure oil way or fuel tank is greater than low-pressure inlet.

Although there are these potential advantages, the hydrovalve actuator for internal-combustion engine of narrating in the international monopoly WO2004/011780 that belongs to the applicant still has various restrictions and shortcoming, comprising:

Can not obtain from the cylinder that valve rule is different of opening of another cylinder of same internal-combustion engine simultaneously and open valve rule, the valve of one of cylinder of motor so it can not for example be stopped using;

Can not more than one lift be provided or can not forward two stroke cycle to from four stroke cycle for each cycle of engine of same valve;

The oil hydraulic cylinder of the valve of internal-combustion engine directly impacts described valve, the lift of described valve produces violent water hammering in the pipeline of actuator, because described ducted pressure suddenly fluctuates in the time that the hydraulic pressure positive-displacement pump of described cylinder and actuator is placed on oil circuit, this water hammer is to be produced by the inertia of described valve, it causes sizable accelerating force, and the reaction force that these power produce by the Returnning spring of described valve increases;

Be difficult to make the valve of internal-combustion engine to lean against lightly on their valve seat, this is owing to the constant relationship between the hydraulic pressure delivery side of pump at actuator and the opening and closing speed of described valve.This collision that can cause producing between described valve and its valve seat can produce excessive acoustic emission and make described valve and described valve seat damages too early;

Very long for connecting the pipeline of the oil hydraulic cylinder of valve described in actuator and opening and closing, and contain quite a large amount of oil, it can compressed and then decompression in the operation each time of described valve.This can cause described valve to have unsettled position and be difficult to controlling;

This actuator has certain design complexity, because it is made up of numerous precision partss, and this kind of complexity and parts can cause actuator to have high cost of production;

This actuator needs accurate electric motor, to guide the position of its fork part, so that can be in the mode that matches for the lift of described valve, unlatching in advance and the retarded closing of valve.These complicated motors can be very expensive.

Summary of the invention

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention is outstanding than the known valve drive of prior art, because the present invention has inherited the advantage of the hydrovalve actuator for internal-combustion engine of narrating in the international monopoly WO2004/011780 that belongs to the applicant, eliminate its shortcoming simultaneously, and got rid of its limit of functions by embodiment and diverse means used.

Therefore, according to electro hydraulic valve actuator of the present invention:

Make to open valve rule for the cylinder of internal-combustion engine provides one simultaneously, this open valve rule and described motor another cylinder to open valve rule different;

Making can be for the air inlet of the cylinder of internal-combustion engine or outlet valve provide a kind of rule of opening, and it is different from the unlatching rule of another valve of the same air inlet of having of described cylinder or degassing function simultaneously;

The valve of one or more cylinders of same internal-combustion engine can be stopped using;

Allow same valve can have several lifts at each cycle of engine;

Make any cylinder of same internal-combustion engine or same internal-combustion engine can carry out equally well 2 strokes or 4 stroke cycle;

By reducing inertial force that the part of directly being impacted by oil hydraulic cylinder produces and preventing or weaken widely the ducted water hammering of actuator by the valve that gradual liter is provided and falls internal-combustion engine, thereby reduce noise and the position unstability of described valve;

The valve of internal-combustion engine can be leaned against on their valve seat lightly, thereby prevent any too early damage of excessive acoustic emission and described valve seat and/or described valve;

Reduce widely the impact of the positional stability of the valve of oily compressibility combustion motor;

Significantly reduce costs and complexity.

Further feature of the present invention has been made narration at specification with in the dependent claims that is subordinated to directly or indirectly main claim.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises:

At least one valve that comprises at least one valve power piston activates oil hydraulic cylinder, in the time that described oil hydraulic cylinder is connected by opening valve solenoid valve and at least one introducing high-pressure oil passage, described oil hydraulic cylinder is opened at least one valve of internal-combustion engine or piston compressor, draw high-pressure oil passage while being connected at described oil hydraulic cylinder by closing valve solenoid valve and at least one, described oil hydraulic cylinder is closed described valve, and be neither connected with described introducing high-pressure oil passage also not with the described high-pressure oil passage of drawing while being connected at described oil hydraulic cylinder, described oil hydraulic cylinder is held open described valve;

Comprise at least one hydraulic pressure positive-displacement pump of at least one outlet and at least one entrance, described at least one outlet is connected with the low pressure oil way that is connected at least one low pressure vessel, and described at least one entrance is connected with described low pressure oil way, described pump is to rotate to the proportional speed of speed of the bent axle of described internal-combustion engine;

The described introducing high-pressure oil passage that makes described hydraulic pressure positive displacement delivery side of pump and described valve activate oil hydraulic cylinder be connected at least one open valve high pressure pipe line;

The entrance that makes described hydraulic pressure positive-displacement pump and described valve activate oil hydraulic cylinder described in draw that high-pressure oil passage is connected at least one close valve high pressure pipe line;

At least one pump discharge closure member, it can prevent that the hydraulic fluid of discharging from the described outlet port of described hydraulic pressure positive-displacement pump from returning to described low pressure oil way, so that described fluid is opened in valve high pressure pipe line described in being forced;

At least one pump intake safety check, what it prevented from activating oil hydraulic cylinder from described valve directly returns to described low pressure oil way via the described hydraulic fluid that closes valve high pressure pipe line, so that described fluid is forced in the entrance of described hydraulic pressure positive-displacement pump, and in the time closing valve high pressure pipe line described in the pressure of described low pressure oil way is greater than, described safety check makes described pump can absorb the fluid being included in described low pressure oil way;

At least one opens valve cam, it activates oil hydraulic cylinder with described valve on the one hand and is connected by mechanical transmission and is directly connected or connects by intermediate gearing with the described valve of described internal-combustion engine on the other hand, described cam moves along a direction during the open operation of described valve, then during the closed procedure of described valve, moves in opposite direction;

Described at least one Returnning spring of opening valve cam, its tend to make described cam return described valve at described internal-combustion engine when closed described in the present position of cam.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises that the valve of rotation activates the valve power piston of oil hydraulic cylinder and armature shape (pallet-shaped), described piston makes at least one hyperbaric chamber separate with at least one low pressure chamber, so that the pressure of described hydraulic fluid can rotate described piston, described piston with described in open valve cam and directly or be indirectly rotationally connected.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises and can move and promote the valve power piston of opening valve rack at cylinder head midcourse guidance at cylinder, described cylinder head is included in described internal-combustion engine or described piston compressor, described tooth bar be arranged on described in the small gear opened on the axle of valve cam match to rotate described cam in the time that described piston moves in longitudinal translation mode.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise the valve rack of opening at the described cylinder head midcourse guidance of described internal-combustion engine by least one ball or roller bearing.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises valve power piston, this valve power piston in cylinder, move and with in each end with open the hinged one end of valve rod and open valve rod described in promoting, described bar promotes to open by described the cam arm that valve cam comprises directly or indirectly then, the other end of described bar is also hinged with described cam arm, to rotate described cam in the time that described piston moves in longitudinal translation mode.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve rod, and at least one end at its two ends is come hinged by open type or enclosed ball-and-socket joint.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises hydraulic pressure positive-displacement pump, it comprises multiple compartments, each compartment forms from main pump, described at least one entrance and at least one outlet of being connected with at least one valve actuating oil hydraulic cylinder of comprising from main pump, describedly rotate by same cam from main pump, and be contained in same housing.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam be included in the position transducer on the described valve of described internal-combustion engine.

Described in being included in, the electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention drives the cam angle position sensor on valve cam.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve cam, it coordinates with cam stop part, in the time that the described valve by described cam-actuated described internal-combustion engine is closed, described cam stop part limits the maximum angular position of described cam.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise cam stop part, it is arranged on vibration damper or comprises vibration damper, so that the acoustic emission when being limited in described cam and contacting with described cam stop part.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve cam, it comprises two open types or enclosed joint and cam lever contact surface, the first joint is fixed on described internal-combustion engine, the second joint directly passes through piston follower or is indirectly connected with described valve power piston by push rod, described cam can roll and/or slide on the rocker switch contact surface being arranged on rocker switch breaker arm, wherein one end of described rocker switch breaker arm is hinged at least one the breaker arm anchor being fixed on described motor, its the other end is equipped with at least one breaker arm follower, described breaker arm follower can promote the afterbody of at least one valve of described motor directly or indirectly, to open described valve.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam be included in the ball-and-socket joint at least one of two open types or enclosed joint.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises push rod, its every end and ball-and-socket joint are hinged, the first ball-and-socket joint is arranged in described valve power piston or on the end of described valve power piston, described in the second ball-and-socket joint is arranged on, open in valve cam or described in open on valve cam.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve cam, it comprises cam lever contact surface and rotates by least one cursor, wherein one end of described cursor is fixed on the axle of described cam, its the other end is hinged by the first end of Pivot joint or ball-and-socket joint and arm shape push rod, it is hinged that the second end of described push rod passes through Pivot joint or ball-and-socket joint and described valve power piston, and described cam can roll and/or slide on the rocker switch contact surface being arranged on rocker switch breaker arm, wherein one end of described rocker switch breaker arm is hinged at least one the breaker arm anchor being fixed on described motor, its the other end is equipped with at least one breaker arm follower, described breaker arm follower can promote the afterbody that at least one valve of described motor comprises directly or indirectly, to open described valve.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises valve power piston, it moves in the cylinder that is equipped with piston end position shock-absorbing opening, when described valve power piston arrives the valve of the described internal-combustion engine that it activates at it when closed near present position time, described piston end position shock-absorbing opening is completely or partially closed by described valve power piston.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises valve power piston, it moves in the cylinder that is equipped with piston end position retainer, and described piston end position retainer limits described valve power piston and insert the degree of depth of described cylinder.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises low pressure vessel, it comprises by least one make-up pump and remains at least one compensating accumulator under pressure, and described make-up pump is by sucking hydraulic fluid at least one adding container as described compensating accumulator provides hydraulic fluid.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve solenoid valve and/or closes valve solenoid valve and/or pump discharge sealed electromagnetic valve, it is tubular solenoid valve, described solenoid valve pipe comprise can be on comprising at least one rectilinear tubes of longitudinal translation motion in the valve casing of chamber He Xia chamber, described rectilinear tubes comprises to be introduced described indoor first end and introduces described lower the second indoor end, described the second end can contact at least one sealing surfaces that is fixed on described valve casing, to seal as far as possible tightly described the second end.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tubular solenoid valve, it is included in the seal arrangement between outer surface and the described valve casing of described rectilinear tubes, and described seal arrangement makes described upper chamber and described lower chamber isolation.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tubular solenoid valve, and it comprises at least one closing spring, and it tends to make described rectilinear tubes and described sealing surfaces to keep in touch.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tubular solenoid valve, it comprises at least one electric actuator that can apply to described rectilinear tubes the power that the power that produces with described closing spring is contrary, in the time that electric current passes through described actuator, described power is enough to mention described rectilinear tubes from described sealing surfaces.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tubular solenoid valve, and its electric actuator comprises electric lead coil, and in the time that electric current passes through described coil, described coil attracts magnetic conduction core or armature.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises electric actuator, and its magnetic conduction core or armature are contained in described indoor.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises electric actuator, and its electric lead coil is contained in described indoor.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises electric actuator, its electric lead coil is contained in the outside of described upper chamber, when the magnetic field that by described coil produced of electric current during by described coil is through the outer wall of described chamber, to magnetic core or armature are applied to power.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tubular solenoid valve, and its first end is fixed on described magnetic core or armature.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise rectilinear tubes, its first end comprise lead to described upper chamber at least one radially and/or axially open.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise rectilinear tubes, its second end has the shape of spherical segment, and becomes line contact with described sealing surfaces, this line contacts and ball is leaned against to the line forming on base and contact similar.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises sealing surfaces, it is arranged on independently floating on assembly in described valve casing, in the time that described second end of described rectilinear tubes contacts with described sealing surfaces, described parts can align with described rectilinear tubes.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises valve casing, it directly comprises or indirectly comprises by middle connector the relief opening by the sealing of parts independently, and described sealing surfaces is arranged on this independently on parts.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises valve casing, it is fixed on described internal-combustion engine and comprises entrance/exit opening and/or pipeline, described opening and/or pipeline make described upper chamber and/or described lower chamber and described valve activate that oil hydraulic cylinder is connected or by described introducing high-pressure oil passage, described in draw high-pressure oil passage or described low pressure oil way is connected with described hydraulic pressure positive-displacement pump.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises rectilinear tubes, and its part in sealing place being made up of described rectilinear tubes and described valve casing is slightly less than the part in described rectilinear tubes and described sealing surfaces contacting point of described rectilinear tubes.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tubular solenoid valve, and its seal arrangement comprises the outer surface of the described rectilinear tubes cooperating with the internal surface of described valve casing.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tubular solenoid valve, it has and is arranged on the adjustable member that cooperates in described rectilinear tubes and with the axial stop surface being arranged on directly or indirectly in described valve casing or unadjustable, described stop surface determine described rectilinear tubes and and the described sealing surfaces that cooperates mutually of described rectilinear tubes between ultimate range.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises valve casing, and it can hold multiple tubular solenoid valves.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises make-up pump, it comprises the supplementary piston that can move around in the closed-end cylinder being arranged in closed-end cylinder housing, to limit variable volume in the inside of described cylinder, described supplementary piston also cooperates with supplementary inlet valve and supplementary outlet valve, its middle outlet and entrance are introduced respectively in described volume, described inlet valve allows to enter from the hydraulic fluid of described adding container, described outlet valve enters described fluid described compensating accumulator or enters and supplements in accumulator.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises make-up pump, its supplementary piston is by mainly activating with in first direction translational motion by supplementing electromagnetic actuators that magnetic core core, electric lead coil and supplementary magnetic housing form, and activates with in second direction translational motion by the Returnning spring of described supplementary piston.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises make-up pump, and its closed-end cylinder and described supplementary magnetic housing are included in same metal parts.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises make-up pump, and its closed-end cylinder comprises casing, and described supplementary piston moves in described casing.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises make-up pump, described in it, closed-end cylinder comprises end position transport openings, described end position transport openings makes described closed-end cylinder be connected with described supplementary outlet valve, so that described supplementary piston covers described opening in the time of the ending of delivery stroke, and slow down and then in its delivery stroke, stop.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise make-up pump, its range is limited and/or on pumping direction, end part by suction and limited by carrying retainer on throughput direction.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises electromagnetic valve actuator, its supplementary magnetic core core is arranged on described supplementary piston rigidly, described supplementary piston traverses described supplementary magnetic core, described supplementary piston traverses described supplementary magnetic housing in mode end to end, so that the side at described housing cooperates with described closed-end cylinder, and cooperate at the opposite side of described housing and the described Returnning spring of described piston.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises make-up pump, it comprises the supplementary tube-shaped piston moving around that can stand in open type cylinder, described open type cylinder is arranged on pump case directly or indirectly in all-in-one-piece open type cylinder casing, so that described piston, described cylinder limits variable volume in the inside of described cylinder together with described pump case, described supplementary tube-shaped piston cooperates with the tube-shaped piston inlet valve that comprises ball and spring, described ball leans against on base, described base is arranged on bottom and at described piston with comprise the inside of open type cylinder outlet valve of ball and spring, described ball leans against on the base on the outside that is arranged on bottom and described cylinder, described inlet valve allows to enter from the hydraulic fluid of described adding container, described outlet valve enters described fluid in described compensating accumulator or described supplementary accumulator.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise open type cylinder casing, it comprises the hydraulic fluid duct road that makes described tube-shaped piston inlet valve connect directly or indirectly the pump intake opening that described pump case comprises.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise pump case, it comprises the hydraulic fluid outlet conduit that makes described open type cylinder outlet valve connect directly or indirectly the pump discharge opening that described pump case comprises.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises supplementary tube-shaped piston, it activated with first direction translational motion by the electromagnetic valve actuator being mainly made up of the supplementary magnetic core, electric lead coil and the supplementary magnetic housing that are fixed on described supplementary piston, and activated with second direction translational motion by the Returnning spring of described supplementary tube-shaped piston.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises supplementary magnetic core, it is provided with at least one core passage, described core passage makes described hydraulic fluid duct road indirectly connect the center of described supplementary tube-shaped piston via described tube-shaped piston inlet valve, described open type cylinder casing, described magnetic core and described piston are contained in the inside of tight housing jointly, and described housing makes hydraulic fluid be transported to described passage from described pipeline.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises adding container, and its lubricant oil way by described internal-combustion engine is supplied with hydraulic fluid.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises adding container, and it comprises specific hydraulic fluid, and is independent of the lubricant oil way of described internal-combustion engine.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises that valve activates oil hydraulic cylinder, it comprises at least one floss hole, described floss hole reclaims from described valve and activates the hydraulic fluid that oil hydraulic cylinder is discharged, so that described fluid turns back to described adding container by least one cylinder blowdown piping.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises hydraulic pressure positive-displacement pump, it comprises at least one floss hole, described floss hole reclaims the hydraulic fluid of discharging from described hydraulic pressure positive-displacement pump, so that described fluid turns back to described adding container by least one pump blowdown piping.

According to according to the present invention for internal-combustion engine have cylinder and back and forth the electro hydraulic valve actuator of cam comprise one or more discharge cocks, described discharge cock be placed on that described valve activates on oil hydraulic cylinder and/or on described hydraulic pressure positive-displacement pump and/or described introducing high-pressure oil passage and/or described in draw on any position of high-pressure oil passage and/or described low pressure oil way.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve cam, it is wedge-shaped slides, described slider can be arranged on translation in guiding element in the cylinder head of described internal-combustion engine or slider under described valve activates the effect of oil hydraulic cylinder, so that the wedge shape of described slider produces localized variation on thickness, the described valve that makes it possible to described internal-combustion engine promotes or is positioned over described valve seat from its valve seat.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises guiding element or slider, and it comprises at least one roller, and described wedge-shaped slides is rolled on described roller.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises wedge-shaped slides, it cooperates with roll-type rocker switch breaker arm, wherein one end of described rocker switch breaker arm is hinged at least one the breaker arm anchor being fixed on described internal-combustion engine, its the other end is equipped with at least one breaker arm follower, described breaker arm follower can promote the afterbody that the described valve of described motor comprises directly or indirectly, to open described valve.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve cam, it comprises cam pin, wherein one end of described cam pin is hinged on axle, the other end comprises tangential lifting surface, what described tangential lifting surface had be shaped as makes to activate at described valve under the effect of oil hydraulic cylinder in the time that its axle rotates when described cam pin, described tangential lifting surface applies radial force with respect to described axial roll-type rocker switch breaker arm, wherein one end of described breaker arm itself is hinged at least one the breaker arm anchor being fixed on described motor, its the other end is equipped with at least one breaker arm follower, to can promote directly or indirectly the afterbody that the described valve of described motor comprises, to open described valve.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises mechanical transmission, it is connected cam pin and described valve actuating oil hydraulic cylinder, described mechanical transmission comprises push rod, every one end at the two ends of described push rod comprises pivotable and/or ball-and-socket joint, first end lean against on described valve power piston or within, the second end leans against in the main body of described cam pin.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises cam pin Returnning spring, it comprises at least one helical spring, it applies the power contrary with the power of described valve power piston, and it trends towards making being separated from each other by least one two pivotables and/or ball-and-socket joint of relative to each other guiding that be slidably connected, the first joint leans against on described internal-combustion engine directly or indirectly, and the second joint leans against in the main body of cam pin.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises tangential lifting surface, and it is terminated at retainer, and described retainer can contact roll-type rocker switch breaker arm, to limit the angular motion of described cam pin.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises at least one supplementary accumulator, and it is plugged between described make-up pump and described compensating accumulator.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises supplementary accumulator, and its outlet comprises blocking-valve.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises supplementary accumulator, it is connected by the pipeline that comprises at least one safety check with described compensating accumulator, described safety check allows hydraulic fluid to flow to described compensating accumulator from described supplementary accumulator, and not vice versa.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises out valve high pressure pipe line, it comprises at least one pressure holding valve, described pressure holding valve is positioned in its one end place and approaches described hydraulic pressure positive-displacement pump most, described pressure holding valve is opened in valve high pressure pipe line described in allowing to infiltrate from the hydraulic fluid of described pump, but can not discharge from the described valve high pressure pipe line of opening.

The electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine according to the present invention comprises hydraulic pressure positive-displacement pump, its outlet comprises the low pressure vessel safety check being positioned between described outlet and pump discharge sealed electromagnetic valve, described valve allows hydraulic fluid to flow to described low pressure vessel from the described outlet of described hydraulic pressure positive-displacement pump, but not vice versa.

The function with the electro hydraulic valve actuator of cylinder and reciprocal cam is:

-hydraulic fluid in the outlet port that is transported to hydraulic pressure positive-displacement pump is forced in the valve actuating oil hydraulic cylinder of at least one valve of hot internal-combustion engine, to little by little described valve is risen to the height of requirement in the moment requiring and the moment that need to promote described valve;

Then,

-make hydraulic fluid keep the valve that is limited to described valve to activate in oil hydraulic cylinder, meet the requirements of the time to keep described valve to open, the described time represents with the bent axle degree of rotation of described motor;

Then,

-hydraulic fluid comprising in the valve actuating oil hydraulic cylinder of described valve is forced in the entrance of described hydraulic pressure positive-displacement pump, so that described valve gently leaned against on its valve seat in the moment requiring, be recovered in the open period of described valve by most of mechanical energy of the Returnning spring storage of described valve simultaneously, and activate by described valve, described spring, combination most of kinetic energy that the mechanical part of described valve is stored during the closed stroke of described valve.

According to a specific embodiment, the electro hydraulic valve actuator with cylinder and reciprocal cam according to the present invention also comprises:

At least one cam-position sensor and/or at least one valve position sensors;

Control at least one electronic control unit of the different solenoid valves of described actuator;

Measure at least one sensor of the position, angle of the bent axle of described motor, position, described angle is considered by electronic control unit, to control and drive valve solenoid valve, close valve solenoid valve and pump seal solenoid valve, so that actual aperture, lift height and closing point that the actual valve position of each angular position measurement that is described bent axle by cam angle position sensor and/or valve position sensors requires with described valve are mated preferably, these different sensors, electronic control unit and its various solenoid valves have been realized the closed loop control of valve position.

Brief description of the drawings

The following narration providing with reference to accompanying drawing and as non-limiting example by be conducive to understand better the function of the present invention, its proposition, with and the advantage that can provide:

Fig. 1 shows according to the schematic diagram of the electro hydraulic valve actuator with cylinder and reciprocal cam of the present invention, and this actuator is such as one of them valve that can be arranged to only activate reciprocating internal combustion engine.

Fig. 2 shows the schematic diagram according to actuator of the present invention, this actuator is such as eight air inlets or the outlet valve that can be arranged to activate the reciprocating internal combustion engine with four cylinders and every cylinder four valves, and wherein each group being made up of two valves of same cylinder is activated by same valve actuating oil hydraulic cylinder.

Fig. 3 shows the schematic diagram according to actuator of the present invention, this actuator has four cylinders of every cylinder four valves and eight suction valves and eight outlet valves of motor such as being arranged to activate, and wherein each group being made up of two valves of same cylinder activates Driven by Hydraulic Cylinder by same valve.

Fig. 4 is the schematic cross-section of installing according to the sample in the reciprocating internal combustion engine of actuator of the present invention.

Fig. 5 is according to the exploded view of the hydraulic pressure positive-displacement pump of actuator of the present invention, and according to a specific embodiment, described pump is being spaced apart, and drives and be contained in multiple from main pump in same housing thereby form by same axle.

Fig. 6 is the schematic sectional view of opening valve cam and the mechanical transmission between described oil hydraulic cylinder and described cam that activates oil hydraulic cylinder according to the valve of actuator of the present invention, according to a specific embodiment, described transmission device is the tooth bar cooperating with the small gear of axle that is fixed on described cam.

Fig. 7 is the schematic sectional view of opening valve cam and the mechanical transmission between described oil hydraulic cylinder and described cam that activates oil hydraulic cylinder according to the valve of actuator of the present invention, according to a specific embodiment, described transmission device is the valve rod of opening being hinged on the cam arm being comprised by described cam.

Fig. 8 is the schematic sectional view of opening valve cam and the mechanical transmission between described oil hydraulic cylinder and described cam that activates oil hydraulic cylinder according to the valve of actuator of the present invention, according to a specific embodiment, described cam adopt can be between roll-type slider and roll-type breaker arm the form of the wedge-shaped slides of translation.

Fig. 9 is the schematic sectional view of opening valve cam according to of the present invention, according to a specific embodiment, it is activated by the oil hydraulic cylinder that is directly arranged on the rotation on the axle of described cam, and the mechanical transmission between described cylinder and described cam is comprised by described axle.

Figure 10 and 11 is respectively the schematic sectional view of driving valve and closing valve of opening valve cam, valve actuating oil hydraulic cylinder and the mechanical transmission between described cylinder and described cam according to actuator of the present invention, according to a specific embodiment, described cam comprises two open types or enclosed joint and cam lever contact surface, and described cam cooperates with rocker switch breaker arm.

Figure 12 is the schematic sectional view of the modification of the member of the actuator shown in Figure 10 and Figure 11, its difference part is out that valve cam is rotated by cursor, wherein one end of cursor is fixed on the axle of described cam and described cursor cooperates with arm shape push rod, and the power that described arm shape push rod produces valve power piston sends described cursor to.

Figure 13 is the schematic sectional view of opening valve cam, valve actuating oil hydraulic cylinder and the mechanical transmission between described oil hydraulic cylinder and described cam according to actuator of the present invention, described cam comprises cam pin, its one end is hinged on axle, and its other end comprises the tangential lifting surface cooperating with roll-type rocker switch breaker arm.

Figure 14 and 15 be according to of the present invention open valve solenoid valve and/or pump discharge sealed electromagnetic valve respectively operating position (Figure 14) and in enable possition the schematic sectional view of (Figure 15), according in a specific embodiment, it adopts the form of tubular solenoid valve.

Figure 16 is according to the present invention with according to the schematic sectional view of the make-up pump that closed-end cylinder is provided of a specific embodiment.

Figure 17 is according to the present invention with according to the schematic sectional view that the make-up pump that supplements tube-shaped piston is provided of the second specific embodiment.

Figure 18 to 20 is decomposition 3-D views of embodiment's according to the present invention and as shown in figure 17 make-up pump.

Figure 21 shows according to the schematic diagram of the electro hydraulic valve actuator with cylinder and reciprocal cam of the present invention, this actuator is such as one of them valve that can be arranged to only activate reciprocating internal combustion engine, and wherein pump intake safety check is by replacing with the pump intake solenoid valve of the parallel installation of pump inlet pressure limiter.

Embodiment

Fig. 1 to Fig. 4 shows the electro hydraulic valve actuator with cylinder and reciprocal cam 1 for internal-combustion engine 100.

Electronic liquid valve actuator 1 comprises that at least one valve activates oil hydraulic cylinder 2, it comprises at least one valve power piston 3, in the time that described oil hydraulic cylinder 2 is connected by opening valve solenoid valve 4 and at least one introducing high-pressure oil passage 5, described oil hydraulic cylinder 2 is opened at least one valve 101 of internal-combustion engine 100 or piston compressor.

Draw high-pressure oil passage 7 while being connected at described oil hydraulic cylinder 2 by closing valve solenoid valve 6 and at least one, described oil hydraulic cylinder 2 is closed described valve 101.

Neither be connected with described introducing high-pressure oil passage 5 also not with the described high-pressure oil passage 7 of drawing while being connected at described oil hydraulic cylinder 2, described oil hydraulic cylinder 2 ensures that described valve 101 is held open.

Introduce high-pressure oil passage 5 and draw high-pressure oil passage 7 and can comprise known shunt inherently, so as dividing flow toward or activate the stream of oil hydraulic cylinders 2 from several valves.

Electronic liquid valve actuator 1 comprises at least one hydraulic pressure positive-displacement pump 8, and it comprises at least one outlet being connected with the low pressure oil way 9 that is connected at least one low pressure vessel 10 on the one hand, and comprises on the other hand at least one entrance being connected with described low pressure oil way 9.

Low pressure vessel 10 comprises by least one make-up pump 52 and remains at least one compensating accumulator 51 under pressure, and by hydraulic fluid is sucked, at least one adding container 53 is interior provides hydraulic fluid for described compensating accumulator 51 to described make-up pump.

It should be noted that, it can be maybe any other type well known by persons skilled in the art that compensating accumulator 51 available membrane, piston are specialized, and can be contained in the housing 35 of described hydraulic pressure positive-displacement pump 8, and there is on the one hand the impact of the compressibility that especially limits hydraulic fluid on the function of actuator 1 according to the present invention and prevent from the other hand occurring in the inside of described actuator the effect of any cavitation.

Be noted that hydraulic pressure positive-displacement pump 8 rotates with the proportional speed of speed of the bent axle 102 that comprises to described internal-combustion engine 100.

Hydraulic pressure positive-displacement pump 8 can have fixed cylinder or changable type cylinder, internal gear or external gear, piston, screw or armature.

Hydraulic pressure positive-displacement pump 8 can be fixed on internal-combustion engine 100, and can be by the bent axle of described motor 102 by least one small gear or at least one link or drive by least one belt or by fixed ratio or variable ratio transmission unit.

By described bent axle 102, the driving of described hydraulic pressure positive-displacement pump 8 can be only undertaken by mechanical device or electric device and the alternator that promotes the electric motor of described pump by driving.The electric energy being produced by described alternator can or without pre-stored at battery, and low pressure oil way 9 can comprise pressure transducer, its value by the pressure being dominant in described oil circuit returns to electronic control unit.

Electronic liquid valve actuator 1 comprises that at least one opens valve high pressure pipe line 11, and it makes the outlet of described hydraulic pressure positive-displacement pump 8 be connected with the described introducing high-pressure oil passage 5 that described valve activates oil hydraulic cylinder 2.

Electronic liquid valve actuator 1 comprises that at least one closes valve high pressure pipe line 12, its entrance that makes described hydraulic pressure positive-displacement pump 8 and described valve activate oil hydraulic cylinder 2 described in draw high-pressure oil passage 7 and be connected.

Electronic liquid valve actuator 1 comprises at least one pump discharge sealed electromagnetic valve 13, and it can prevent that the hydraulic fluid of discharging from the described outlet of described hydraulic pressure positive-displacement pump 8 from returning to described low pressure oil way 9, so that described fluid is opened in valve high pressure pipe line 11 described in being forced.

According to electronic liquid valve actuator 1 specific embodiment, pressure restrictor 144 can be installed abreast with pump discharge sealed electromagnetic valve 13, in the time that the pressure difference at the two ends of described solenoid valve exceedes certain value, described limiter allows hydraulic fluid to be directly sent to low pressure vessel 10 and can not flow through described solenoid valve from the outlet of hydraulic pressure positive-displacement pump 8.

Electronic liquid valve actuator 1 comprises at least one pump intake safety check 14, what it prevented from activating oil hydraulic cylinder 2 from described valve directly returns to described low pressure oil way 9 via the described hydraulic fluid that closes valve high pressure pipe line 12, thereby described fluid is forced in described hydraulic pressure positive-displacement pump 8.

In closing valve high pressure pipe line 12 described in the pressure of described low pressure oil way 9 is greater than, be dominant pressure time, described safety check 14 allows described hydraulic pressure positive-displacement pump 8 to draw the described fluid being included in described low pressure oil way 9.

According to non-limiting exemplary embodiment, described safety check 14 can comprise ball, and it remains on its base by spring.

According to a specific embodiment of the electronic liquid valve actuator 1 shown in Figure 21, described pump intake safety check 14 can be replaced by pump intake solenoid valve 142, it can be installed abreast with pump inlet pressure limiter 143, in the time that the pressure difference of each end of described solenoid valve 142 exceedes certain value, described limiter allows hydraulic fluid to be directly sent to the entrance of hydraulic pressure positive-displacement pump 8 and can not flow through described solenoid valve 142 from low pressure vessel 10.This configuration can advantageously cooperate with the safety check 145 that closes valve high pressure pipe line 12, so that the pressure that makes to be dominant in low pressure vessel 10 can be greater than 100 the required pressure of valve 101 of killing engine completely, described configuration makes likely especially to reduce the average pressure reduction of the each end that puts on described hydraulic pressure positive-displacement pump 8, to improve the energy characteristics of electro hydraulic valve actuator 1.

Electronic liquid valve actuator 1 comprises that at least one opens valve cam 15, and it activates oil hydraulic cylinder 2 with described valve on the one hand and is connected by mechanical transmission 16 and is directly connected or connects by intermediate gearing 17 with the described valve 101 of described internal-combustion engine 100 on the other hand.

Described cam 15 moves along a direction during the open operation of described valve 101, then during the closed procedure of described valve 101, moves in opposite direction.

Described intermediate gearing 17 can be to well known to a person skilled in the art tappet, rocking arm or roll-type breaker arm 18, and the latter optionally can comprise inherently known robot device for compensating the gap between described cam 15 and described valve 101.

The described valve cam 15 of opening is opened the movable member that valve cam cooperates with it described in being, described mechanical transmission 16 and described intermediate gearing 17 are implemented in light as far as possible mode.

Electronic liquid valve actuator 1 comprises out at least one Returnning spring 19 of valve cam 15, it tend to make described cam 15 return described valve 101 at described internal-combustion engine 100 when closed described in the present position of cam 15.

According to a specific embodiment, described Returnning spring 19 can be to guarantee that described valve 101 turns back to the spring 103 of closed position.

The valve 101 of internal-combustion engine 100 comprises position transducer (not shown), and it can be the type with Hall effect effect of inductance type, or any other type well known by persons skilled in the art.

Fig. 9 shows according to the sample embodiment of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

Electronic liquid valve actuator 1 comprises that the valve of rotation activates oil hydraulic cylinder 2 and has the valve power piston 3 of armature shape.

Described valve power piston 3 makes at least one hyperbaric chamber 20 separate with at least one low pressure chamber 21 so that the pressure of described hydraulic fluid can rotate described piston 3, described piston with described in open valve cam 15 and directly or be indirectly rotationally connected.

Fig. 6 shows according to another sample embodiment of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

Electronic liquid valve actuator 1 comprises valve power piston 3, its can in cylinder 22, move and promote cylinder head 104 midcourse guidances open valve rack 23, described cylinder head is comprised by described internal-combustion engine 100 or described piston compressor.

Small gear 24 on the described axle 25 of opening valve cam 15 described in opening valve rack 23 and being arranged on cooperates to rotate described cam in the time that described piston 3 moves in longitudinal translation mode, and described tooth bar 23 forms described mechanical transmission 16 with described small gear 24.

It should be noted that according to a specific embodiment, small gear 24 can comprise with small angle and is directly arranged in out the band tooth quadrant on the periphery of valve cam 15.

Open valve rack 23 can be by least one ball or roller bearing 26 described cylinder head 104 midcourse guidances at described internal-combustion engine 100.

Fig. 7 shows according to the another sample embodiment of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

Electronic liquid valve actuator 1 comprises valve power piston 3, and it can move and open valve rod described in wherein one end promotion hinged with opening valve rod 27 in cylinder 22.

The described valve rod 27 of opening promotes to open by described the cam arm 28 that valve cam 15 comprises directly or indirectly then, and the other end of described bar 27 is also hinged with described cam arm, to rotate described cam 15 in the time that described piston 3 moves in longitudinal translation mode.

The described mechanical transmission 16 of opening valve rod 27 and cam arm 28 and form electro hydraulic valve actuator 1.

At least one end at described two ends of opening valve rod 27 is hinged by open type or enclosed ball-and-socket joint 29.

Open valve cam 15 and comprise cam angle position sensor 30, it can be encoder or the angle transducer that well known to a person skilled in the art any other type (Fig. 6,7,9 and 12).

Open valve cam 15 and cooperate with cam stop part (not shown), in the time of described valve 101 closure of the described internal-combustion engine 100 being activated by described cam 15, described cam stop part limits the maximum angular position of described cam 15.

Described cam stop part is arranged on vibration damper or comprises vibration damper, so that the acoustic emission when opening valve cam 15 described in being limited in and contacting with described cam stop part.

Fig. 5 shows according to the sample embodiment of the hydraulic pressure positive-displacement pump 8 of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

Described hydraulic pressure positive-displacement pump 8 comprises multiple compartments 31, each compartment forms from main pump, described at least one entrance 32 and at least one outlet 33 of being connected with at least one valve actuating oil hydraulic cylinder 2 of comprising from main pump, describedly rotate by same rotating shaft 34 from main pump, and be contained in same housing 35.

Figure 10 and Figure 11 show according to another sample embodiment of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

Open valve cam 15 and comprise two open types or enclosed joint 36,37 and cam lever contact surface 38.

The first joint 36 is fixed on described internal-combustion engine 100, and the second joint 37 is directly by piston follower or be indirectly connected with described valve power piston 3 by push rod 40.

Opening valve cam 15 can roll and/or slide on the rocker switch contact surface 41 being arranged on rocker switch breaker arm 42, wherein one end of described rocker switch breaker arm is hinged at least one the breaker arm anchor 43 being fixed on described motor 100, its the other end is equipped with at least one breaker arm follower 44, described breaker arm follower can promote the afterbody 105 of at least one valve 101 of described motor 100 directly or indirectly, to open described valve.

Owing to driving two joints 36 of valve cam 15,37, the position of cam lever contact surface 38, rocker switch contact surface 41 and breaker arm anchor 43 and breaker arm follower 44 is all set to described valve power piston 3 large lever arm is provided, to be used for opening described valve 101 in the time that the valve 101 of described internal-combustion engine 100 is closed, described lever arm is along with the change of the lift height of described valve 101 is large and a little less than becoming more and more.

Note, this breaker arm anchor 43 can comprise known hydraulic pressure installation inherently, for compensating the play of described valve 101.

Note, open the location of the joint that is fixed on internal-combustion engine 100 of the shape of valve cam 15, the shape that is arranged on the surface of contact 41 on rocker switch breaker arm 42, described cam 15 and the location of being fixed on the breaker arm anchor 43 of described motor 100 and be determined to be in described valve 101 experience and open or be conducive to the maximum possible rolling component of the point of contact part between described cam 15 and described surface of contact 41 and the minimum component that may slide when closing operation.

Open valve cam 15 and comprise two joints 36,37, at least one of these two open types or enclosed joint is ball-and-socket joint 45.

Wherein one end and the ball-and-socket joint of described push rod 40 are hinged, and the first ball-and-socket joint 46 is arranged in described valve power piston 3 or on the end of described valve power piston, described in the second ball-and-socket joint 47 is arranged on, open among valve cam 15 or on.

Described in Fig. 8 shows, opening valve cam 15 can be wedge-shaped slides 90, described slider can be arranged on translation in guiding element in the cylinder head 104 of described internal-combustion engine 100 or slider 91 under described valve activates the effect of oil hydraulic cylinder 2, so that the wedge shape of described slider 90 produces localized variation on thickness, the described valve 101 that makes it possible to described internal-combustion engine 100 promotes or is positioned over described valve seat from its valve seat.

Guiding element or the slider 91 of opening valve cam 15 can comprise at least one roller 92, and described wedge-shaped slides is rolled on described roller.

Described wedge-shaped slides 90 cooperates with roll-type rocker switch breaker arm 18, wherein one end of described rocker switch breaker arm is hinged at least one the breaker arm anchor 43 being fixed on described motor 100, its the other end is equipped with at least one breaker arm follower 44, described breaker arm follower can promote the afterbody 105 that the described valve 101 of described motor 100 comprises directly or indirectly, to open described valve.

As shown in figure 13, open valve cam 15 and can comprise cam pin 131, wherein one end of described cam pin is hinged on axle 133, the other end comprises tangential lifting surface 132, described tangential lifting surface has to be shaped as and makes to activate at described valve under the effect of oil hydraulic cylinder 2 in the time that its axle 133 rotates when described cam pin 131, and described tangential lifting surface radially promotes roll-type rocker switch breaker arm 18 with respect to described axle 133.

According to this kind of configuration, described breaker arm 18 wherein one end own are hinged at least one the breaker arm anchor 43 being fixed on described motor 100, its the other end is equipped with at least one breaker arm follower 44, to can promote directly or indirectly the afterbody 105 that the described valve 101 of described motor 100 comprises, to open described valve.

Referring to Figure 13, can notice, the mechanical transmission 1 that cam pin 131 and valve actuating oil hydraulic cylinder 2 are connected can advantageously comprise push rod 40, the two ends 135 of described push rod, every one end of 136 comprises pivotable and/or ball-and-socket joint, first end 135 lean against on described valve power piston 3 or within, the second end 136 leans against in the main body of described cam pin 131.

It is also noted that, the Returnning spring 19 of cam pin 13 can comprise at least one helical spring 134, it applies the power contrary with the power of described valve power piston 3, and it trends towards making by least one 137 two pivotables relative to each other guiding and/or ball-and-socket joint 138 that are slidably connected, 139 are separated from each other, the first joint 138 leans against on described internal-combustion engine 100 directly or indirectly, and the second joint 139 leans against in the main body of cam pin 131.

In addition, as a modification, tangential lifting surface 132 can be terminated at retainer 140, and described retainer can contact roll-type rocker switch breaker arm 18, to limit the angular motion of described cam pin 131.

Figure 12 shows according to another sample embodiment of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

Open valve cam 15 and comprise cam lever contact surface 38.

Open valve cam 15 and rotate by least one cursor 48, wherein one end of described cursor is fixed on the axle 25 of described cam 15, and its other end is hinged with the first end of arm shape push rod 40 by pivot or ball-and-socket joint 49.

The second end of described push rod 40 is hinged with described valve power piston 3 by pivot or ball-and-socket joint 47.

Described cam 15 can roll and/or slide on the rocker switch contact surface 41 being arranged on rocker switch breaker arm 42, wherein one end of described rocker switch breaker arm is hinged at least one the breaker arm anchor 43 being fixed on described motor 100, its the other end is equipped with at least one breaker arm follower 44, described breaker arm follower can promote the afterbody 105 that at least one valve 101 of described motor 100 comprises directly or indirectly, to open described valve 101.

Open that axle 25, cam lever contact surface 38, rocker switch contact surface 41 and the breaker arm anchor 43 of valve cam 15 and the location of breaker arm follower 44 are all arranged to provide large lift arm for described valve power piston 3, to be used for opening described valve 101 in the time that the valve 101 of described internal-combustion engine 100 is closed, described lift arm is along with the change of the lift height of described valve 101 is large a little less than becoming more and more.

It should be noted that according to a specific embodiment, cursor 48 can rotate several valve cams 15 of opening.

It is also noted that, this breaker arm anchor 43 can comprise known hydraulic pressure installation inherently, for compensating the play of described valve.

Note, open the location of the joint that is fixed on internal-combustion engine 100 of the shape of valve cam 15, the shape that is arranged on the surface of contact 41 on rocker switch breaker arm 42, described cam 15 and the location of being fixed on the rocker switch anchor 43 of described motor 100 and be determined to be in described valve 101 experience and open or be conducive to the maximum possible rolling component of the point of contact part between described cam and described surface of contact and the minimum component that may slide when closing operation.

Described valve power piston 3 moves in the cylinder 22 that is equipped with shock-absorbing opening 50, and described shock-absorbing opening is in the end of stroke of piston.

When described valve power piston arrives the valve 101 of the described internal-combustion engine 100 that it activates at it when closed near present position time, described shock-absorbing opening 50 is completely or partially sealed by described valve power piston 3.

Described shock-absorbing opening 50 slows down described piston 3 by the part that phases down hydraulic fluid and pass through, and described hydraulic fluid is discharged from described oil hydraulic cylinder 2 in the time that described valve 101 cuts out.

Described valve power piston 3 moves in the cylinder 22 that is equipped with piston end position retainer, and described piston end position retainer limits described valve power piston 3 and insert the degree of depth of described cylinder 22.

Figure 14 and Figure 15 show according to of the present invention has cylinder and reciprocal the driving valve solenoid valve 4 and/or close valve solenoid valve 6 and/or the sample embodiment of pump discharge sealed electromagnetic valve 13 of electro hydraulic valve actuator of cam 1.

Described open valve solenoid valve 4 and/or described in close valve solenoid valve 6 and/or described pump discharge sealed electromagnetic valve 13 for tubular solenoid valve 60, described solenoid valve pipe comprises at least one rectilinear tubes 61 that can the interior longitudinal translation of valve casing 62 of chamber 63He Xia chamber 64 moves on comprising.

Described rectilinear tubes 61 comprises to be introduced the first end 65 in described upper chamber 63 and introduces the second end 66 in described lower chamber 64.

Described second end 66 of described rectilinear tubes 61 can contact at least one sealing surfaces 67 that is fixed on described valve casing 62, to seal as far as possible tightly described the second end 66.

Described tubular solenoid valve 60 is included in the seal arrangement 68 between outer surface and the described valve casing 62 of described rectilinear tubes 61, and it makes described upper chamber 63 isolate with described lower chamber 64.

Described tubular solenoid valve 60 comprises at least one closing spring 69, and it tends to make described rectilinear tubes 61 to keep in touch with described sealing surfaces 67.

Described tubular solenoid valve 60 comprises at least one electric actuator 70 that can apply to described rectilinear tubes 61 power that the power that produces with described closing spring 69 is contrary, in the time that electric current passes through described actuator, described power is enough to mention described rectilinear tubes 61 from described sealing surfaces 67.

Described electric actuator 70 comprises electric lead coil 71, and in the time that electric current passes through described coil 71, described coil attracts conductive core or armature 72.

The electric lead of electric actuator 70 or armature 72 can be contained in the upper chamber 63 of valve casing 62.

The electric lead coil 71 of electric actuator 70 can be contained in the upper chamber 63 of valve casing 62.

The electric lead coil 71 of electric actuator 70 can be contained in the outside of described upper chamber 63, when the magnetic field that by described coil produced of electric current during by described coil is through the outer wall of described chamber 63, to conductive core or armature 72 are applied to power.

The described first end 65 of described rectilinear tubes 61 can be fixed on described conductive core or armature (72).

Described conductive core or armature 72 can be included in same metal parts with rectilinear tubes 61, or rectilinear tubes can be by gluing together, be threaded, crimping or by well known to a person skilled in the art that any alternate manner fixes with described core.

The described first end 65 of described rectilinear tubes 61 comprise lead to described upper chamber 63 at least one radially and/or axially open 88.

Described second end 66 of described rectilinear tubes 61 has the shape of spherical segment, and contacts with 67 one-tenth lines of described sealing surfaces, the contact of this line with ball is leaned against to the line forming on base and contacts similar.

Described sealing surfaces 67 is arranged on independently floating on assembly 73 in described valve casing 62, and in the time that described second end 66 of described rectilinear tubes contacts with described sealing surfaces 67, described parts can align with described rectilinear tubes 61.

Described valve casing 62 directly comprises or indirectly comprises the relief opening 75 by independently parts 73 seal by middle connector 74, described sealing surfaces 67 is arranged on independently on parts, so that the power being applied to described independently parts 73 by this rectilinear tubes 61 by closing spring 69 and/or the power that produced by the pressure being dominant in upper chamber 63 and/or lower chamber 64 make described parts 73 remain under pressure at described relief opening 75, to make described relief opening keep closing.

Surface of contact between described independently parts 73 and described valve casing 62 can arrange joint or retainer, and it increases contact partly, thus the tightness between parts 73 and described valve casing 62 independently described in improving.

Described valve casing 62 is fixed on described internal-combustion engine 100 and comprises entrance/and/or exit opening and/or pipeline 89, described opening and/or pipeline make described upper chamber 63 and/or described lower chamber 64 and described valve activate that oil hydraulic cylinder 2 is connected or by described introducing high-pressure oil passage 5, described in draw high-pressure oil passage 7 or described low pressure oil way 9 is connected with described hydraulic pressure positive-displacement pump 8.

The part in sealing place being made up of described rectilinear tubes and described valve casing 62 of described rectilinear tubes 61 is slightly less than the part in described rectilinear tubes and described sealing surfaces 67 contacting points of described rectilinear tubes.

Described seal arrangement 68 comprises the outer surface of the described rectilinear tubes 61 cooperating with the internal surface of described valve casing 62.

Seal arrangement 68 also can comprise the outer surface of rectilinear tubes 61, it cooperates with the internal surface of described valve casing 62, in described valve casing, can hold at least one ring joint and/or at least one sections, it can advantageously be substituted by the little gap of several microns staying between the outer surface of rectilinear tubes 61 and the internal surface of valve casing 62.

Adjustable or unadjustable retainer can be set in rectilinear tubes 61, it cooperates with the axial stop surface 93 being arranged on directly or indirectly in described valve casing 62, described stop surface determine described rectilinear tubes and and the described sealing surfaces 67 that cooperates of described rectilinear tubes between ultimate range.

Note, as previously mentioned, valve casing 62 can hold multiple tubular solenoid valves 60.

Figure 16 shows according to the sample embodiment of the make-up pump 52 of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

Make-up pump 52 comprises supplementary piston 54, and it can move around in the closed-end cylinder 55 being arranged in closed-end cylinder housing 56, to limit variable volume in the inside of described cylinder.

Described supplementary piston 54 cooperates with supplementary inlet valve 57 and supplementary outlet valve 58, its corresponding outlet and entrance lead to respectively in described volume, described inlet valve 57 allows to enter from the hydraulic fluid of described adding container 53, and described outlet valve 58 enters described fluid described compensating accumulator 51 or enters and supplements in accumulator 85.

Described supplementary piston 54 by mainly by supplement electromagnetic actuators 80 that magnetic core 81, electric lead coil 82 and supplementary magnetic housing 83 form with first direction translation activated, and by make spring 84 that described supplementary piston 54 can return with second direction translation activated.

Described closed-end cylinder housing 56 is included in same parts with the supplementary magnetic housing 83 of electromagnetic actuators 80.

Described closed-end cylinder housing 56 comprises casing 59, and described supplementary piston 54 moves in described casing.

Described closed-end cylinder 55 comprises end position transport openings 76, and it makes described closed-end cylinder be connected with described supplementary outlet valve 58, so that described supplementary piston 54 covers described opening in the time of the ending of delivery stroke, and slows down and then stops in its delivery stroke.

Note, the maximum stroke of described supplementary piston 54 is limited and/or on pumping direction, end part 78 by suction and limited by carrying retainer 77 on throughput direction.

Carry retainer 77 and suck cut-off part 78 and can comprise at least one the elastic material that shock-absorbing character is provided.

The supplementary piston 54 that described supplementary magnetic core 81 is installed described supplementary magnetic core above rigidly traverses.

Described supplementary piston 54 traverses described supplementary magnetic housing 83 in mode end to end, to cooperate with described closed-end cylinder 55 in a side of described housing, and cooperates at the opposite side of described housing and the described Returnning spring 84 of described piston 54.

According to the first modification of this kind of layout, supplement piston 54 and can be fixed on supplementary magnetic core 81.

For this purpose, described supplementary magnetic core 81 comprises the device for being connected to this Returnning spring 84, and described Returnning spring is fixed on described supplementary piston 54 indirectly, to make described core and described spring reset.

Modification as shown in Figure 17 to 20, make-up pump 52 can comprise the supplementary tube-shaped piston 107 that can move around in open type cylinder 108, described open type cylinder is arranged on pump case 126 directly or indirectly in all-in-one-piece open type housing 109.

Therefore, described piston 107, described cylinder 108 limit variable volume 110 in the inside of described cylinder 108 together with described pump case 126, described supplementary tube-shaped piston 107 cooperates with the tube-shaped piston inlet valve 111 that comprises ball 113 and spring 114, described ball leans against on base 115, described base is arranged on bottom and at described piston 107 with comprise on the inside of open type cylinder outlet valve 112 of ball 116 and spring 117, described ball leans against on the base 118 on the outside that is arranged on bottom and described cylinder 109.

Therefore, it should be noted in the discussion above that described inlet valve 111 allows to enter from the hydraulic fluid of described adding container 53, described outlet valve 112 enters described fluid in described compensating accumulator 51 or described supplementary accumulator 85.

According to a specific embodiment, described open type cylinder casing 109 can comprise hydraulic fluid duct road 124, and it makes described tube-shaped piston inlet valve 111 connect directly or indirectly the pump intake opening 125 that described pump case 126 comprises.

It is also noted that, pump case 126 comprises hydraulic fluid outlet conduit 127, and it makes described open type cylinder outlet valve 112 connect directly or indirectly the pump discharge opening 128 that described pump case 126 comprises.

According to selected embodiment, described supplementary tube-shaped piston 107 can by the electromagnetic actuators 119 that mainly formed by the supplementary magnetic core 120, electric lead coil 121 and the supplementary magnetic housing 122 that are fixed on described supplementary piston 107 with first direction translation activated, and Returnning spring 123 by described supplementary piston 107 with second direction translation activated.

According to this kind of configuration, described supplementary magnetic core 120 can arrange at least one core passage 129, described core passage makes described hydraulic fluid duct road 124 indirectly connect described supplementary tube-shaped piston 107 center via described tube-shaped piston inlet valve 111, described open type cylinder casing 109, described magnetic core 120 and described piston 111 are contained in the inside of watertight housings 130 jointly, and described housing 130 makes hydraulic fluid be transported to described passage 129 from described pipeline 124.

Described adding container 53 is supplied with hydraulic fluid by the lubricant oil way of described internal-combustion engine 100.

Described adding container 53 comprises specific hydraulic fluid, and is independent of the lubricant oil way of described internal-combustion engine 100.

Described hydraulic fluid can be prepared especially, so that according to according to the present invention have cylinder and back and forth performance, precision and the durability of the electro hydraulic valve actuator of cam 1 maximize, this is especially thanks in the irrelevant low viscosity of described fluid and operating temperature thermo-motor, lower compressibility, good lubricity and abrasion resistant qualities or without abrasive grains and corrosion or oxygenant.

Should be understood that, this valve activates oil hydraulic cylinder 2 can comprise at least one floss hole (not shown), described floss hole reclaims from described valve and activates the hydraulic fluid that oil hydraulic cylinder is discharged, so that described fluid turns back to described adding container 53 by least one cylinder blowdown piping.

Note, hydraulic pressure positive-displacement pump 8 can comprise at least one floss hole (not shown), and described floss hole reclaims the hydraulic fluid of discharging from described hydraulic pressure positive-displacement pump, so that described fluid turns back to described adding container 53 by least one cylinder blowdown piping.

According to according to the present invention have cylinder and back and forth the electro hydraulic valve actuator of cam 1 can comprise one or more discharge cocks, described discharge cock be placed on that described valve activates on oil hydraulic cylinder 2 and/or on described hydraulic pressure positive-displacement pump 8 and/or described introducing high-pressure oil passage 5 and/or described in draw on any position of high-pressure oil passage 7 and/or described low pressure oil way 9.

The type of described discharge cock (not shown) can be similar with those skilled in the art's conventional those in any hydraulic applications.

The electro hydraulic valve actuator with cylinder and reciprocal cam 1 according to the present invention can comprise at least one supplementary accumulator 85, and it is plugged between described make-up pump 52 and described compensating accumulator 51.

As shown in Figures 2 and 3, supplement accumulator 85 and can supply with multiple compensating accumulators 51, they supply with respectively multiple independently valve actuator oil circuits.

When pressure in described oil circuit exceedes certain value, described supplementary accumulator 85 is supplied with described compensating accumulator 51.

Supplementing accumulator 85 and can comprise barrier film, piston, can be maybe to well known to a person skilled in the art any other type.

Supplement the outlet of accumulator 85 and comprise blocking-valve, its pressure supplementing in accumulator described in ensureing in the time that internal-combustion engine 100 stops can keeping.

Supplement accumulator 85 and be connected by the pipeline that comprises at least one safety check 86 with described compensating accumulator 51, described safety check allows hydraulic fluid to flow to described compensating accumulator 51 from described supplementary accumulator 85, and not vice versa.

Open valve high pressure pipe line 11 and comprise at least one pressure holding valve 87, described pressure holding valve is positioned in its one end that approaches described hydraulic pressure positive-displacement pump 8 most.

Described pressure holding valve 87 is opened in valve high pressure pipe line described in allowing to infiltrate from the hydraulic fluid of described hydraulic pressure positive-displacement pump 8, but can not discharge from the described valve high pressure pipe line of opening.

Particularly, pressure holding valve 87 makes it possible to prevent the decompression between 101 liters, two valves of described oil circuit, to limit acoustic emission and to improve according to the performance of actuator of the present invention.

As a modification, the outlet of described hydraulic pressure positive-displacement pump 8 comprises low pressure vessel 10 safety check 141 that are positioned between described outlet and pump discharge sealed electromagnetic valve 13, described valve 141 allows hydraulic fluid to flow to described low pressure vessel 10 from the described outlet of described hydraulic pressure positive-displacement pump 8, but not vice versa.

The electronic liquid valve actuator with cylinder and reciprocal cam 1 can comprise at least one oil circuit pressure restrictor 146, it is placed on the oil circuit 9 of low pressure and/or opens valve high pressure pipe line 11 and/or close on any position of valve high pressure pipe line 12, at described oil circuit 9 and/or described pipeline 11, when pressure in 12 exceedes certain value, described limiter 146 allows the hydraulic fluid being included in described oil circuit 9 and/or described pipeline 11,12 directly to turn back in adding container 53.

Based on above narration, can understand according to the operation of the electro hydraulic valve actuator with cylinder and reciprocal cam 1 of the present invention.

With respect to Fig. 1, it shows the schematic diagram of modification of the present invention, and it is arranged to control an only valve 101, and with respect to Figure 12, it has proposed its specific embodiment, and the operation of actuator according to the present invention in function is as follows:

Hydraulic pressure positive-displacement pump 8 is constantly driven by the bent axle 102 of internal-combustion engine 100.

In the time that the valve 101 of internal-combustion engine 100 must keep cutting out, drive valve solenoid valve 4 and close valve solenoid valve 6 and close, unlatching of pump discharge sealed electromagnetic valve 13, and allowing the hydraulic fluid of discharging in the outlet of described hydraulic pressure positive-displacement pump 8 to guide described low pressure oil way 9 into, the latter is fed to back described hydraulic fluid with identical speed the entrance of described pump 8 by pump intake safety check 14.Because the pressure reduction between the entrance and exit of described pump is low, the latter only consumes few energy.

In the time that the valve 101 of internal-combustion engine 100 must carry out open operation, pump discharge sealed electromagnetic valve 13 is closed and is prevented that the hydraulic fluid of discharging in the outlet port of hydraulic pressure positive-displacement pump 8 from returning to low pressure oil way 9, so that described fluid is forced into out in valve high pressure pipe line 11 naturally.

Once pump discharge sealed electromagnetic valve 13 is closed, can increase rapidly at the pressure in hydraulic pressure positive-displacement pump 8 outlet ports, and reach by described pressure holding valve 87 and be stored in out the pressure in valve high pressure pipe line 11 before.About this moment, drive valve solenoid valve 4 and open greatly, activate oil hydraulic cylinder 2 and advance described valve power piston 3 so that hydraulic fluid infiltrates through described valve.

As shown in figure 12, when mobile, valve power piston 3 pusher arm shape push rods 40, described push rod promotes pivoted arm 48, and it rotates valve cam 15 on its axle 25.The cam lever contact surface 38 that the rotation of described cam 15 causes being arranged on described cam 15 is exerted pressure to the rocker switch contact surface 41 being arranged on rocker switch breaker arm 42.This dumps forward described breaker arm 42, leans against on the breaker arm anchor 43 that is fixed on internal-combustion engine 100 once it, just promotes the afterbody 105 of the valve 101 of described motor by breaker arm follower 44, and it causes described valve 101 to be opened.

It should be noted that, structure as shown in Figure 12 be it seems, described axle 25, cam lever contact surface 38, rocker switch contact surface 41 and the breaker arm anchor 43 of valve cam 15 and the position of breaker arm follower 44 of opening is all arranged so that they provide large lever arm for described valve power piston 3, to be used for opening described valve 101 in the time that the valve 101 of described internal-combustion engine 100 is closed, described lever arm is along with the change of the lift height of described valve 101 is large a little less than becoming more and more

This configuration impels the possible decompression of accelerating gradually of described valve 101 and the firing chamber 106 that comprised by internal-combustion engine 100 so that at described oil hydraulic cylinder 2, introduce high-pressure oil passage 5 and open pressure in valve high pressure pipe line 11 and increase progressively and do not have and occur water hammer or the excitatory unsettled risk of lengthwise position that causes out the position, angle of valve cam 15 and the valve 101 of described motor because of the compression at hydraulic fluid and/or decompression.

As can be seen from Figure 12, the lift height of the valve 101 of internal-combustion engine 100 can be inferred from the position, angle that cam angle position sensor 30 records of passing through of opening valve cam 15.Measured value can return to the electronic control unit of internal-combustion engine 100.

In the time reaching the lift height that described valve 101 requires, described electronic control unit is opened this pump discharge sealed electromagnetic valve 13, it stops the unlatching of described valve 101, because the hydraulic fluid of discharging from the outlet port of hydraulic pressure positive-displacement pump 8 is no longer forced into out valve high pressure pipe line 11 and therefore and naturally flows to low pressure oil way 9.

Almost at the same time, driving valve solenoid valve 4 closes, its one of them effect is to make valve 101 be stabilized in its setting position, and its another effect is captured in out valve high pressure pipe line 11 by a certain amount of hydraulic fluid under pressure and introduces in high-pressure oil passage 5, described pressure holding valve 87 prevents described fluid hydraulic return positive-displacement pump 8.

Note, by described valve by described fluid be captured in described pipeline, can advantageously cause acoustic emission reduction and/or improve according to the performance of actuator of the present invention, this particularly by be reduced in the fluid stopping fiercely in described compensating accumulator 51 capacity realize.

Note, as long as when closing valve solenoid valve 6 and not activated by electronic control unit to open, the valve 101 of internal-combustion engine 100 is just held open.The timing of the unlatching of described valve 101 can be based on distributing to internal-combustion engine 100 the target of control determine, and no matter this target is will improve torque and the power-performance of described motor or will improve its energy efficiency or reduce the discharge of its pollutant.

For the time requiring is closed described valve 101 again, electronic control unit is opened and is closed valve solenoid valve 6.The result of this operation is to allow the hydraulic fluid being included in valve actuating oil hydraulic cylinder 2 then to discharge by closing valve high pressure pipe line 12 by drawing high-pressure oil passage 7, to be connected to the entrance of hydraulic pressure positive-displacement pump 8.

This operation moment is increased in the pressure of the ingress of described pump, is greater than the existing pressure in low pressure oil way 9 thereby described pressure is become.This pressure reduction has been closed pump intake safety check 14, so that activate flowed through the forcibly entrance of described hydraulic pressure positive-displacement pump 8 of the hydraulic fluid of oil hydraulic cylinder 2 from valve.

Activate by valve the described hydraulic pressure positive-displacement pump 8 that fluid that oil hydraulic cylinder 2 discharges rotates and become motor, and return to a part of mechanical work to the bent axle 102 of internal-combustion engine 100, described mechanical work previously make compressible hydraulic fluid and described motor valve 101 spring 103 and can make out Returnning spring 19 tensionings of valve cam 15, and at the dydraudynamic drive unit that had previously made can accelerate described valve, whole mechanical transmission 16 chains and move in to-and-fro motion mode by actuator according to the present invention.

Note, close valve solenoid valve 6 and can open once, but it also can proportional mode be opened or open repeatedly.Be additional to the variable lever being produced by mechanical transmission 16 and intermediate gearing 17 as shown in figure 12, these concussion effects of bearing also can contribute to make the valve 101 of described internal-combustion engine 100 to land on its valve seat during for opening the strategy of described solenoid valve minimize.

Particularly, described in close valve solenoid valve 6 proportional unlatching can realize by applying pulse-width-modulated current to the end of its coil 71, the method is also called for short " PWM " (pulse duration modulation).The control of described solenoid valve is to entrust to electronic control unit, and it cooperates with cam angle position sensor 30 and/or the crank shaft angle encoder 102 of internal-combustion engine 100, to control the speed of described valve 101, on the valve seat especially landing at it at it in.

Note, the total measurement (volume) of the oil circuit of actuator 1 depends on the position of valve power piston 3 in its cylinder 22.The variation of this volume is absorbed by compensating accumulator 51, and its pressure by low pressure oil way 9 remains between two values, i.e. minimum value and maximum values.

Described minimum pressure values is enough to make actuator 1 according to the present invention work and there will not be cavitation, described phenomenon to be considered to be destructive on the one hand; And the possible position unstability that the compressibility by hydraulic fluid that is enough on the other hand the valve 101 that makes internal-combustion engine 100 causes minimizes.Under any circumstance, the valve pressure of described maximum must be no more than valve power piston 3 is promoted the valve of internal-combustion engine 100 101 pressure from its valve seat.

Note, if the minimum pressure values of low pressure oil way 9 drops to lower than a certain threshold value (described value is monitored by the pressure transducer that is arranged on any position in low pressure oil way 9 by electronic control unit), make-up pump 52 is by drawing the hydraulic fluid in adding container 53 and described fluid being conveyed in compensating accumulator 51, to supplement described compensating accumulator with described fluid.

In Fig. 2 and 3, can find out, supply with multiple oil circuits in parallel and each oil circuit when actuator 1 according to the present invention and supply with when not opening at the same time but belonging to multiple valves 101 of same internal-combustion engine 100 or valve group, supplement accumulator 85 and can advantageously insert between the make-up pump 52 and compensating accumulator 51 being comprised by each oil circuit of described oil circuit in parallel.In this kind of situation, single supplementary accumulator 85 is supplied described hydraulic fluid by the supplementary safety check 86 being comprised by low pressure oil way described in each 9 to the compensating accumulator 51 being comprised by low pressure oil way described in each 9.

According to this kind of configuration, what monitored by pressure transducer by electronic control unit is the existing minimum pressure values of supplementing in accumulator 85, and the existing minimum pressure values described in each in low pressure oil way 9 remains on the value of requirement automatically by its supplementary safety check 86.

As will understanding easily, above narration only provides as example, and can not limit the scope of the invention completely, the present invention includes the execution details of making narration by any other equivalent.

Claims

1. for an electro hydraulic valve actuator with cylinder and reciprocal cam for internal-combustion engine (100), it is characterized in that, it comprises:

At least one valve that comprises at least one valve power piston (3) activates oil hydraulic cylinder (2), in the time that described oil hydraulic cylinder (2) is connected by opening valve solenoid valve (4) and at least one introducing high-pressure oil passage (5), described oil hydraulic cylinder (2) is opened at least one valve (101) of internal-combustion engine (100) or piston compressor, draw high-pressure oil passage (7) while being connected at described oil hydraulic cylinder (2) by closing valve solenoid valve (6) and at least one, described oil hydraulic cylinder (2) is closed described valve (101), and be neither connected with described introducing high-pressure oil passage (5) also not with the described high-pressure oil passage (7) of drawing while being connected at described oil hydraulic cylinder (2), described oil hydraulic cylinder (2) is held open described valve (101),

Comprise at least one hydraulic pressure positive-displacement pump (8) of at least one outlet and at least one entrance, described at least one outlet is connected with the low pressure oil way (9) that is connected at least one low pressure vessel (10), and described at least one entrance is connected with described low pressure oil way (9), described pump (8) is to rotate to the proportional speed of speed of the bent axle (102) of described internal-combustion engine (100);

The outlet that makes described hydraulic pressure positive-displacement pump (8) and described valve activate that the described introducing high-pressure oil passage (5) of oil hydraulic cylinder (2) is connected at least one open valve high pressure pipe line (11);

The entrance that makes described hydraulic pressure positive-displacement pump (8) and described valve activate oil hydraulic cylinder (2) described in draw that high-pressure oil passage (7) is connected at least one close valve high pressure pipe line (12);

At least one pump discharge closure member (13), described pump discharge closure member (13) can prevent that the hydraulic fluid of discharging from the described outlet of described hydraulic pressure positive-displacement pump (8) from returning to described low pressure oil way (9), so that described fluid is opened in valve high pressure pipe line (11) described in being forced;

At least one pump intake safety check (14), what described pump intake safety check (14) prevented from activating oil hydraulic cylinder (2) from described valve directly returns to described low pressure oil way (9) via the described hydraulic fluid that closes valve high pressure pipe line (12), so that described fluid is forced in the entrance of described hydraulic pressure positive-displacement pump (8), and in the time closing valve high pressure pipe line (12) described in the pressure of described low pressure oil way (9) is greater than, described safety check makes described pump can absorb the fluid being included in described low pressure oil way (9);

At least one opens valve cam (15), the described valve cam (15) of opening is connected by mechanical transmission (16) and is directly connected with the described valve (101) of described internal-combustion engine (100) on the other hand with described valve actuating oil hydraulic cylinder (2) or connect by intermediate gearing (17) on the one hand, described cam (15) moves along a direction during the open operation of described valve (101), then during the closed procedure of described valve (101), moves in opposite direction;

Described at least one Returnning spring (19) of opening valve cam (15), described Returnning spring (19) tend to make described cam (15) return described valve (101) at described internal-combustion engine (100) when closed described in the present position of cam (15).

2. the electro hydraulic valve actuator with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described valve activate oil hydraulic cylinder (2) be rotate and described valve power piston (3) be armature shape, described piston (3) makes at least one hyperbaric chamber (20) separate with at least one low pressure chamber (21), so that the pressure of described hydraulic fluid can rotate described piston (3), described piston with described in open valve cam (15) and directly or be indirectly rotationally connected.

3. the electro hydraulic valve actuator with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described valve power piston (3) moves and promotes in cylinder (22) opens valve rack (23) at cylinder head (104) midcourse guidance, described cylinder head is comprised by described internal-combustion engine (100) or described piston compressor, described tooth bar (23) be arranged on described in the small gear (24) opened on the axle (25) of valve cam (15) cooperate to rotate described cam (15) in the time that described piston (3) moves in longitudinal translation mode.

4. as claimed in claim 3 have cylinder and a reciprocal electro hydraulic valve actuator of cam, it is characterized in that: described in open valve rack (23) by least one ball or roller bearing (26) described cylinder head (104) midcourse guidance at described internal-combustion engine (100).

5. the electro hydraulic valve actuator with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described valve power piston (3) in cylinder (22), move and use each end in open the hinged one end of valve rod (27) and open valve rod described in promoting, described bar (27) promotes to open by described the cam arm (28) that valve cam (15) comprises directly or indirectly then, the other end of described bar (27) is also hinged with described cam arm, to rotate described cam (15) in the time that described piston (3) moves in longitudinal translation mode.

6. as claimed in claim 5 have cylinder and a reciprocal electro hydraulic valve actuator of cam, it is characterized in that: described in open the two ends of valve rod (27) at least one end come hinged by open type or enclosed ball-and-socket joint (29).

7. the electro hydraulic valve actuator with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described hydraulic pressure positive-displacement pump (8) comprises multiple compartments (31), each compartment forms from main pump, describedly comprise and activate with at least one valve at least one entrance (32) that oil hydraulic cylinder (2) is connected and at least one exports (33) from main pump, describedly rotate by same rotating shaft (34) from main pump, and be contained in same housing (35).

8. the electro hydraulic valve actuator with cylinder and reciprocal cam as claimed in claim 1, is characterized in that: the described valve (101) of described internal-combustion engine (100) comprises position transducer.

9. as claimed in claim 1 have cylinder and a reciprocal electro hydraulic valve actuator of cam, it is characterized in that: described in open valve cam (15) and comprise cam angle position sensor (30).

10. the electro hydraulic valve actuator with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described in open valve cam (15) and cooperate with cam stop part, in the time of described valve (101) closure of the described internal-combustion engine (100) being activated by described cam (15), described cam stop part limits the maximum angular position of described cam (15).

The 11. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 10, it is characterized in that: described cam stop part is arranged on vibration damper or comprises vibration damper acoustic emission when described vibration damper is limited in described cam (15) and contacts with described cam stop part.

The 12. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described in open valve cam (15) and comprise two open types or enclosed joint (36,37) and cam lever contact surface (38), the first joint (36) is fixed on described internal-combustion engine (100), the second joint (37) directly passes through piston follower or is indirectly connected with described valve power piston (3) by push rod (40), and described cam (15) can be upper the rolling and/or slip of rocker switch contact surface (41) being arranged on rocker switch breaker arm (42), one end in each end of described rocker switch breaker arm is hinged at least one the breaker arm anchor (43) being fixed on described motor (100), its the other end is equipped with at least one breaker arm follower (44), described breaker arm follower can promote the afterbody (105) of at least one valve (101) of described motor (100) directly or indirectly, to open described valve (101).

The 13. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 12, is characterized in that: at least one of described two open types or enclosed joint (36,37) is ball-and-socket joint.

The 14. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 12, it is characterized in that: one end and ball-and-socket joint in each end of described push rod (40) are hinged, the first ball-and-socket joint (46) is arranged in described valve power piston (3) or on the end of described valve power piston, described in the second ball-and-socket joint (47) is arranged on, open in valve cam (15) or described in open on valve cam (15).

The 15. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described in open valve cam (15) and comprise cam lever contact surface (38) and rotate by least one cursor (48), one end in each end of described cursor is fixed on the axle (25) of described cam (15), its the other end is hinged with the first end of arm shape push rod (40) by pivot or ball-and-socket joint (49), the second end of described push rod (40) is hinged with described valve power piston (3) by pivot or ball-and-socket joint (47), and described cam (15) can be upper the rolling and/or slip of rocker switch contact surface (41) being arranged on rocker switch breaker arm (42), one end in each end of described rocker switch breaker arm is hinged at least one the breaker arm anchor (43) being fixed on described motor (100), its the other end is equipped with at least one breaker arm follower (44), described breaker arm follower can promote the afterbody (105) that at least one valve (101) of described motor (100) comprises directly or indirectly, to open described valve (101).

The 16. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described valve power piston (3) is mobile in the cylinder (22) that is equipped with piston end position shock-absorbing opening (50), when described valve power piston arrives the valve (101) of the described internal-combustion engine (100) that it activates at it when closed near present position time, described opening is completely or partially closed by described valve power piston (3).

The 17. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described valve power piston (3) is mobile in the cylinder (22) that is equipped with piston end position retainer, and described piston end position retainer limits described valve power piston (3) and inserts the degree of depth of described cylinder (22).

The 18. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described low pressure vessel (10) comprises by least one make-up pump (52) and remain at least one compensating accumulator (51) under pressure, described make-up pump is by sucking hydraulic fluid at least one adding container (53) as described compensating accumulator provides hydraulic fluid.

The 19. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described in open valve solenoid valve (4) and/or described in close valve solenoid valve (6) and/or described pump discharge sealed electromagnetic valve (13) is tubular solenoid valve (60), described solenoid valve pipe comprise can be on comprising at least one rectilinear tubes (61) of longitudinal translation motion in the valve casing (62) of chamber (63) and lower chamber (64), described rectilinear tubes (61) comprises to be introduced the first end (65) in described upper chamber (63) and introduces the second end (66) in described lower chamber (64), described the second end (66) can contact at least one sealing surfaces (67) that is fixed on described valve casing (62), to seal as far as possible tightly described the second end (66).

The 20. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 19, it is characterized in that: described tubular solenoid valve (60) is included in the seal arrangement (68) between outer surface and the described valve casing (62) of described rectilinear tubes (61), described seal arrangement (68) makes described upper chamber (63) and described lower chamber (64) isolation.

The 21. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 19, it is characterized in that: described tubular solenoid valve (60) comprises at least one closing spring (69), described closing spring (69) tends to make described rectilinear tubes (61) and described sealing surfaces (67) to keep in touch.

22. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 19 or 21, it is characterized in that: described tubular solenoid valve (60) comprises at least one electric actuator (70) that can apply to described rectilinear tubes (61) power that the power that produces with described closing spring (69) is contrary, in the time that electric current passes through described actuator, described power is enough to mention described rectilinear tubes (61) from described sealing surfaces (67).

The 23. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 22, is characterized in that: described electric actuator (70) comprises electric lead coil (71), in the time that electric current passes through described coil, described coil attracts conductive core or armature (72).

The 24. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 23, is characterized in that: described conductive core or armature (72) are contained in described upper chamber (63).

The 25. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 23, is characterized in that: described electric lead coil (71) is contained in described upper chamber (63).

The 26. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 23, it is characterized in that: described electric lead coil (71) is contained in the outside of described upper chamber (63), when the magnetic field that by described coil produced of electric current during by described coil is through the outer wall of described chamber, to magnetic core or armature (72) are applied to power.

27. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 19 or 23, it is characterized in that: the described first end (65) of described rectilinear tubes (61) is fixed on described conductive core or armature (72).

28. as claimed in claim 19ly have cylinder and reciprocal electro hydraulic valve actuators of cam, it is characterized in that: the described first end (65) of described rectilinear tubes (61) comprise lead to described upper chamber (63) at least one radially and/or axially open (88).

The 29. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 19, it is characterized in that: described second end (66) of described rectilinear tubes (61) has the shape of spherical segment, and becoming line contact with described sealing surfaces (67), described line contacts and ball is leaned against to the line forming on base and contact similar.

The 30. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 19, it is characterized in that: described sealing surfaces (67) is arranged on independently floating on assembly (73) in described valve casing (62), in the time that described second end (66) of described rectilinear tubes contacts with described sealing surfaces, described parts can align with described rectilinear tubes (61).

31. as claim 19, the electro hydraulic valve actuator with cylinder and reciprocal cam described in 21 or 30, it is characterized in that: described valve casing (62) directly comprises or indirectly comprise by middle connector (74) relief opening (75) by the sealing of parts (73) independently, described in described sealing surfaces (67) is arranged on independently on parts.

32. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 1 or 19, it is characterized in that: described valve casing (62) is fixed on described internal-combustion engine (100) and comprises opening and/or inlet/outlet pipeline (89), described inlet/outlet pipeline make described upper chamber (63) and/or described lower chamber (64) and described valve activate that oil hydraulic cylinder (2) is connected or by described introducing high-pressure oil passage (5), described in draw high-pressure oil passage (7) or described low pressure oil way (9) is connected with described hydraulic pressure positive-displacement pump (8).

The 33. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 19, is characterized in that: the part in sealing place being made up of described rectilinear tubes and described valve casing (62) of described rectilinear tubes (61) is slightly less than the part in described rectilinear tubes and described sealing surfaces (67) contacting point of described rectilinear tubes.

The 34. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 20, is characterized in that: described seal arrangement (68) comprises the outer surface of the described rectilinear tubes (61) cooperating with the internal surface of described valve casing (62).

The 35. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 19, it is characterized in that: be arranged on adjustable member in described rectilinear tubes (61) or unadjustable and cooperate with the axial stop surface (93) being arranged on directly or indirectly in described valve casing (62), described stop surface determine described rectilinear tubes and and the described sealing surfaces (67) that cooperates of described rectilinear tubes between ultimate range.

The 36. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 19, is characterized in that: described valve casing (62) can hold multiple tubular solenoid valves (60).

The 37. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 18, it is characterized in that: described make-up pump (52) comprises supplementary piston (54), described supplementary piston (54) can move around in the closed-end cylinder (55) being arranged in closed-end cylinder housing (56), to limit variable volume in the inside of described cylinder, described supplementary piston (54) also cooperates with supplementary inlet valve (57) and supplementary outlet valve (58), its middle outlet and entrance are introduced respectively in described volume, described inlet valve (57) allows to enter from the hydraulic fluid of described adding container (53), described outlet valve (58) enters described fluid described compensating accumulator (51) or enters in supplementary accumulator (85).

The 38. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 37, it is characterized in that: described supplementary piston (54) by mainly by supplement electromagnetic actuators (80) that magnetic core (81), electric lead coil (82) and supplementary magnetic housing (83) form with first direction translation activated, and Returnning spring (84) by described supplementary piston (54) with second direction translation activated.

39. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 37 or 38, it is characterized in that: described closed-end cylinder housing (56) is included in same metal parts with described supplementary magnetic housing (83).

The 40. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 37, is characterized in that: described closed-end cylinder housing (56) comprises casing (59), described supplementary piston (54) moves in described casing.

41. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 37 or 38, it is characterized in that: described closed-end cylinder (55) comprises end position transport openings (76), described end position transport openings (76) makes described closed-end cylinder be connected with described supplementary outlet valve (58), so that described supplementary piston (54) seals described opening in the time of the ending of delivery stroke, and slow down and then stop in its delivery stroke.

42. as claimed in claim 37ly have cylinder and reciprocal electro hydraulic valve actuators of cam, it is characterized in that: the range of described supplementary piston (54) is limited and/or on pumping direction, end part (78) by suction and limited by carrying retainer (77) on throughput direction.

43. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 37 or 38, it is characterized in that: described supplementary magnetic core (81) is arranged on described supplementary piston (54) rigidly, described supplementary piston (54) traverses described supplementary magnetic core (81), described supplementary piston traverses described supplementary magnetic housing (83) in mode end to end, so that the side at described housing cooperates with described closed-end cylinder (55), and cooperate at the opposite side of described housing and the described Returnning spring (84) of described piston (54).

The 44. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 18, it is characterized in that: described make-up pump (52) comprises the supplementary tube-shaped piston (107) that can move around in open type cylinder (108), described open type cylinder is arranged on pump case (126) directly or indirectly in all-in-one-piece open type cylinder casing (109), so that described piston (107), described cylinder (108) and described pump case (126) limit variable volume (110) in the inside of described cylinder (108) together, described supplementary tube-shaped piston (107) cooperates with the tube-shaped piston inlet valve (111) that comprises ball (113) and spring (114), described ball leans against on base (115), described base be arranged on bottom and described piston (107) and comprise ball (116) and the inside of the open type cylinder outlet valve (112) of spring (117) on, described ball (116) leans against on the base (118) on the outside that is arranged on bottom and described cylinder (109), described inlet valve (111) allows to enter from the hydraulic fluid of described adding container (53), described outlet valve (112) enters described fluid in described compensating accumulator (51) or described supplementary accumulator (85).

45. as claimed in claim 44ly have cylinder and reciprocal electro hydraulic valve actuators of cam, it is characterized in that: described open type cylinder casing (109) comprises the hydraulic fluid duct road (124) that makes described tube-shaped piston inlet valve (111) connect directly or indirectly the pump intake opening (125) that described pump case (126) comprises.

46. as claimed in claim 44ly have cylinder and reciprocal electro hydraulic valve actuators of cam, it is characterized in that: described pump case (126) comprises the hydraulic fluid outlet conduit (127) that makes described open type cylinder outlet valve (112) connect directly or indirectly the pump discharge opening (128) that described pump case (126) comprises.

The 47. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 44, it is characterized in that: described supplementary tube-shaped piston (107) by mainly by be fixed on the supplementary magnetic core (120), electric lead coil (121) of described supplementary piston (107) and electromagnetic actuators (119) that supplementary magnetic housing (122) forms with first direction translation activated, and Returnning spring (123) by described supplementary piston (107) with second direction translation activated.

The 48. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 47, it is characterized in that: described supplementary magnetic core (120) arranges at least one core passage (129), described core passage makes described hydraulic fluid duct road (124) via described tube-shaped piston inlet valve (111), described open type cylinder casing (109) connects the center of described supplementary tube-shaped piston (107) indirectly, described magnetic core (120) and described piston (111) are contained in the inside of watertight housings (130) jointly, and described housing (130) makes hydraulic fluid be transported to described passage (129) from described pipeline (124).

49. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 1 or 18, it is characterized in that: described adding container (53) is supplied with hydraulic fluid by the lubricant oil way of described internal-combustion engine (100).

50. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 1 or 18, it is characterized in that: described adding container (53) comprises specific hydraulic fluid, and are independent of the lubricant oil way of described internal-combustion engine (100).

51. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 1 or 18, it is characterized in that: described valve activates oil hydraulic cylinder (2) and comprises at least one floss hole, described floss hole reclaims from described valve and activates the hydraulic fluid that oil hydraulic cylinder is discharged, so that described fluid turns back to described adding container (53) by least one cylinder blowdown piping.

52. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 1 or 18, it is characterized in that: described hydraulic pressure positive-displacement pump (8) comprises at least one floss hole, described floss hole reclaims the hydraulic fluid of discharging from described hydraulic pressure positive-displacement pump, so that described fluid turns back to described adding container (53) by least one pump blowdown piping.

The 53. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: it comprises one or more discharge cocks, described discharge cock be placed on described valve activate oil hydraulic cylinder (2) upper and/or at described hydraulic pressure positive-displacement pump (8) upper and/or described introducing high-pressure oil passage (5) and/or described in draw on any position of high-pressure oil passage (7) and/or described low pressure oil way (9).

The 54. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described in open valve cam (15) for wedge-shaped slides (90), described slider (90) can be arranged on translation in guiding element in the cylinder head (104) of described internal-combustion engine (100) or slider (91) under described valve activates the effect of oil hydraulic cylinder (2), so that the wedge shape of described slider (90) produces localized variation on thickness, the described valve (101) that makes it possible to described internal-combustion engine (100) promotes or is positioned over described valve seat from its valve seat.

The 55. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 54, is characterized in that: described guiding element or slider (91) comprise at least one roller (92), described wedge-shaped slides (90) is rolled on described roller.

The 56. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 54, it is characterized in that: described wedge-shaped slides (90) cooperates with roll-type rocker switch breaker arm (18), one end in each end of described rocker switch breaker arm (18) is hinged at least one the breaker arm anchor (43) being fixed on described motor (100), its the other end is equipped with at least one breaker arm follower (44), described breaker arm follower (44) can promote the afterbody (105) that the described valve (101) of described motor (100) comprises directly or indirectly, to open described valve (101).

The 57. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described in open valve cam (15) and comprise cam pin (131), one end in each end of described cam pin (131) is hinged on axle (133), the other end comprises tangential lifting surface (132), what described tangential lifting surface had be shaped as makes to activate at described valve under the effect of oil hydraulic cylinder (2) in the time that its axle (133) rotates when described cam pin (131), described tangential lifting surface applies radial force with respect to described axle (133) to roll-type rocker switch breaker arm (18), one end in each end of described breaker arm (18) itself is hinged at least one the breaker arm anchor (43) being fixed on described motor (100), its the other end is equipped with at least one breaker arm follower (44), to can promote directly or indirectly the afterbody (105) that the described valve (101) of described motor (100) comprises, to open described valve (101).

58. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 1 or 57, it is characterized in that: the mechanical transmission (16) that cam pin (131) and described valve actuating oil hydraulic cylinder (2) are connected comprises push rod (40), the two ends (135 of described push rod, 136) every one end comprises pivotable and/or ball-and-socket joint, first end (135) leans against described valve power piston (3) above or in described valve power piston (3), the second end (136) leans against in the main body of described cam pin (131).

59. have cylinder and a reciprocal electro hydraulic valve actuator of cam as described in claim 1 or 57, it is characterized in that: the Returnning spring (19) of cam pin (131) comprises at least one helical spring (134), two pivotables and/or ball-and-socket joint (138 that described helical spring (134) applies the power contrary with the power of described valve power piston (3) and trends towards making relative to each other guiding by least one be slidably connected (137), 139) be separated from each other, the first joint (138) leans against on described internal-combustion engine (100) directly or indirectly, the second joint (139) leans against in the main body of cam pin (131).

The 60. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 57, it is characterized in that: described tangential lifting surface (132) is terminated at retainer (140), described retainer (140) can contact roll-type rocker switch breaker arm (18), to limit the angular motion of described cam pin (131).

The 61. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 18, is characterized in that: described at least one supplementary accumulator (85) is plugged between described make-up pump (52) and described compensating accumulator (51).

The 62. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 61, is characterized in that: the outlet of described supplementary accumulator (85) comprises blocking-valve.

The 63. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 61, it is characterized in that: described supplementary accumulator (85) is connected by the pipeline that comprises at least one safety check (86) with described compensating accumulator (51), described safety check allows hydraulic fluid to flow to described compensating accumulator (51) from described supplementary accumulator (85), and not vice versa.

The 64. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: described in open valve high pressure pipe line (11) and comprise at least one pressure holding valve (87), described pressure holding valve (87) is oriented to the end towards the described hydraulic pressure positive-displacement pump of approaching most of it (8), described pressure holding valve is opened in valve high pressure pipe line described in allowing to infiltrate from the hydraulic fluid of described pump, but can not discharge from the described valve high pressure pipe line of opening.

The 65. electro hydraulic valve actuators with cylinder and reciprocal cam as claimed in claim 1, it is characterized in that: the outlet of described hydraulic pressure positive-displacement pump (8) comprises low pressure vessel (10) safety check (141) being positioned between described outlet and pump discharge sealed electromagnetic valve (13), described valve (141) allows hydraulic fluid to flow to described low pressure vessel (10) from the described outlet of described hydraulic pressure positive-displacement pump (8), but not vice versa.