CN201031715Y - Engines variable air valve mechanism - Google Patents
Engines variable air valve mechanism Download PDFInfo
- Publication number
- CN201031715Y CN201031715Y CNU2007201234083U CN200720123408U CN201031715Y CN 201031715 Y CN201031715 Y CN 201031715Y CN U2007201234083 U CNU2007201234083 U CN U2007201234083U CN 200720123408 U CN200720123408 U CN 200720123408U CN 201031715 Y CN201031715 Y CN 201031715Y
- Authority
- CN
- China
- Prior art keywords
- valve
- rocking arm
- head
- push rod
- stem
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L2003/25—Valve configurations in relation to engine
- F01L2003/258—Valve configurations in relation to engine opening away from cylinder
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
The utility model discloses an engine variable-valve distributing mechanism, including a valve, a valve spring and a valve transmission set. The valve consists of a valve head and a valve rod, the valve head is sealed with the conical surface of a cylinder, the valve head is arranged outside a combustion chamber, and the valve head closes the valve by moving from the outside of the combustion chamber to the inside. The utility model can control the valve not only through combination of the valve transmission set and an electromagnetic valve but also entirely through the electromagnetic valve. The utility model has the following advantages: 1. based on the present conditions, the utility model can decrease the size of the combustion chamber, thus increasing the air compression ratio and improving the engine efficiency; 2. as the working range of the valve is out of the combustion chamber and the overlapping work area of the valve head and the piston top is not taken into consideration, the height of the combustion chamber can be decreased, thus further reducing the size of the combustion chamber and increasing the compression ratio; 3. the utility model can enlarge a scavenging channel and improve the ventilation rate.
Description
Technical field
The utility model relates to a kind of engine variable-valve distribution mechanism.
Background technique
The function of engine valve actuating mechanism is the requirement of work cycle, order of work and port timing according to motor, regularly opens and closes the inlet and outlet door so that in time finish scavenging stroke, and in compression and working stroke the sealing of assurance cylinder.Four stroke engine adopts valve type distribution device more, and valve type distribution device mainly is made up of valve group and valve transmission group two-part, and the valve group comprises basic component such as valve, valve seat, valve guide bushing and valve spring again.Valve is the core component of valve group, its effect is that the control cylinder communicates with inlet and exhaust valve or closes, promptly control the switching in inlet and outlet road, it is made up of the valve head and the columniform engine valve stem of bacterium shape, and the valve seat on valve head and the cylinder head fits tightly the dependence conical surface seal.Be fixed with spring seat at the valve stem tail end, spring seat is provided with valve spring, and closing by valve spring of valve finished, and when guaranteeing valve-closing and valve seat or air valve seat ring can fit tightly.The valve transmission group mainly comprises component such as camshaft, tappet, push rod and rocking arm, its function is to pass through mechanical transmission, give the valve stem tail end with force transmission, with opening and closing and switching time, endurance and the opening and closing speed etc. of controlling each cylinder inlet and outlet door.
The valve mounting type of all motors all as shown in Figure 1 at present, valve head 9 is positioned at firing chamber 7, valve stem 10 passes the inlet and outlet road, the valve stem tail end is positioned at outside the cylinder head 4, valve spring is between cylinder head 4 and spring seat and pretension, under the effect of spring force, valve head 9 moves outside firing chamber 7 in 7 from the firing chamber air flue is closed.This specification with this valve head portion be positioned at cylinder head, valve head outwards motion mode that air flue is closed be called built-in distributing type.This built-in distribution device has the following disadvantages: 1, because valve head portion is positioned at the firing chamber, must occupy certain space, firing chamber, the effective usage space in firing chamber is diminished.In order to eliminate this influence, the firing chamber will suitably be done more greatly, and the increase of combustion chamber volume can reduce the gas compression ratio, and then influence engine efficiency and increase exhaust emission.Therefore 2, overlap the working area for fear of valve head and piston head in the work, valve can not stop for a long time in a certain position under the situation that cam mechanism and piston all run well, and can not realize the cylinder that freely breaks.3, since sealing surface of air valve in the annular firing indoor side, valve head diameter is restricted, and then influences inlet and outlet road cross-section area size, thereby will influence the Economy and the reliability of motor.
The engines distribution optimizing process also comprises disconnected cylinder and valve timing.The disconnected cylinder of existing motor is by stage type hydraulic valve tappet, is realized in the internal pressure of tappet by electromagnetic valve machine oil by the powertrain control computer.Its deficiency is: the precision prescribed height, distance between tappet snap ring and the ram seat is approximately 0.02～0.045in, on the motor that has the adjustable air valve rocking arm, this distance is after definite valve clearance is zero, adjust nut by the rotation rocking arm and determine, adjust nut and twist to such an extent that too tightly can make push rod " sink to " tappet.In this case, engine running can cause valve actuating push rod, rocking arm impaired.
And available engine variable timing valve mechanism is realized with two cams, and it has two kinds of implementations: 1, Variable Valve Time and lift electronic control system (VTEC).This system uses two different camshafts during with high speed at low speed, and it can have variability when low engine speed and high speed, and deficiency is that motor but can not be realized variable timing when middling speed; 2, drive intake valve and exhaust valve respectively with two cams, the relative position relation that changes these two camshafts and bent axle is mechanically respectively realized the change of valve timing.Its shortcoming is the independent constantly regulation and control of opening and closing that are difficult to realize the inlet and outlet door, and complex structure, and the cost height is difficult to promote.
The model utility content
At the prior art above shortcomings, the purpose of this utility model provides a kind of engine variable-valve distribution mechanism that can reduce combustion chamber volume and height and can increase the valve head diameter.
The technical solution of the utility model is achieved in that engine variable-valve distribution mechanism, comprise valve, valve spring and valve transmission group, valve is made up of the gentle door of valve head bar, valve head and cylinder head conical surface seal, it is characterized in that: described valve head portion is positioned at outside the firing chamber, the valve head from the firing chamber export-oriented burning indoor sport with valve-closing.
The scheme that cooperates the control valve to open and close by rocking arm and solenoid valve mainly contains two kinds: rocking arm supports and valve supports for scheme 1-be provided with on cylinder head; rocking arm is located at rocking arm by rocker shaft and is supported; valve supports and is provided with valve guide bushing; valve stem passes valve guide bushing and is provided with spring seat at the valve stem end; described valve spring is placed on the valve stem and between spring seat and valve support, the driving cam of valve transmission group and valve stem branch are positioned at the rocker shaft both sides and are positioned at the rocking arm homonymy.It also comprises solenoid valve and the push rod that matches with solenoid valve, and push rod is provided with push rod return spring and the iron core corresponding with solenoid valve, and push rod can act under the solenoid valve adhesive on the rocking arm, and push rod and cam are positioned at the both sides of rocking arm and rocker shaft simultaneously.
Scheme 2-be provided with on cylinder head rocking arm supports and valve supports; rocking arm is located at rocking arm by rocker shaft and is supported; valve supports and is provided with valve guide bushing; valve stem passes valve guide bushing and rocking arm successively and is provided with stop nut at the valve stem end; described valve spring is placed on the valve stem and between the gentle door of valve head supports; the driving cam of valve transmission group and valve stem branch are positioned at the rocker shaft homonymy, and valve stem end and driving cam branch are positioned at the rocking arm both sides.It also comprises solenoid valve and the push rod that matches with solenoid valve, and push rod is provided with push rod return spring and the iron core corresponding with solenoid valve, and push rod can act under the solenoid valve adhesive on the rocking arm, and push rod and cam are positioned at the homonymy of rocking arm and rocker shaft simultaneously.
All the scheme that is opened and closed by the electromagnetic valve valve is: engine variable-valve distribution mechanism, comprise valve, valve is made up of the gentle door of valve head bar, valve head and cylinder head conical surface seal, it is characterized in that: on cylinder head, be provided with valve and support, valve supports and is provided with valve guide bushing, valve stem passes valve guide bushing and is provided with two solenoid valves of controlling the valve conducting respectively and closing at the valve stem end, on valve stem, be provided with the iron core corresponding with solenoid valve, described valve head portion is positioned at outside the firing chamber, the valve head from the firing chamber export-oriented burning indoor sport with valve-closing.
Above-mentioned solenoid valve also available hydraulic device replaces.
Technical characterstic of the present utility model is the valve head is moved on to outside the firing chamber from the existing firing chamber that is positioned at, again by the valve transmission group or/and solenoid valve its switching is controlled, simple in structure, on existing structure, change little.Compared to existing technology, the utlity model has following advantage:
1, because valve head portion is positioned at outside the firing chamber, can any influence not arranged to combustion chamber volume, its actual volume is exactly that it effectively uses volume, therefore can on the basis of existing size, dwindle combustion chamber volume, thereby increase the gas compression ratio, improve engine efficiency, reduce exhaust emission.
2, because whole operating ranges of valve outside the firing chamber, need not consider that valve head and piston head overlap the working area,, can further dwindle combustion chamber volume, improve compression ratio so the height of firing chamber can reduce.The compression ratio of motor is big more, and the temperature and pressure when compression stroke finishes in the cylinder is just high more, and the pressure that the combustion gas expansion that the mixed gas burning produces has is just big more, and heat loss is more little, and the efficient of motor is just high more.Too high and produce detonation in order to reduce Yin Wendu, can strengthen the waste gas intake, thereby reduce exhaust emission once more.
3, sealing surface of air valve can be strengthened (particularly inclined valve motor), thereby strengthen the cylinder head scavenge duct, improve ventilation rate.Former valve sealing face is in the firing chamber, and the utility model is outside the firing chamber, and the area of outer ring is obviously bigger than inner ring, so valve head working surface diameter of the present utility model can strengthen, even it is equally big to reach former valve head actual diameter.Channel cross-sectional area is big more, and scavenging performance is high more, particularly strengthens the intake valve diameter, and particularly high speed is very favourable for Economy, the reliability of motor, and the power of motor is increased.
4, utilize solenoid valve can realize disconnected cylinder of close type valve and the disconnected cylinder of opening type valve (comprise and select disconnected cylinder and complete disconnected cylinder).
5, can make the whole timing configured of motor (comprising valve timing and injection timing or ignition timing) regulate and control and obtain desirable disconnected cylinder situation to the optimum scheme that adapts with its operating mode, make motor under all operating modes, give full play to its potentiality, make it reach optimum, obtain optimum performance.
Description of drawings
Fig. 1-prior art structural representation;
Fig. 2-the utility model structural representation;
Fig. 3-the utility model embodiment 1 structural representation;
Fig. 4-the utility model embodiment 2 structural representations;
Fig. 5-the utility model embodiment 3 structural representations;
Fig. 6-the utility model embodiment 4 structural representations.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model engine variable-valve distribution mechanism, comprise valve 1, valve guide bushing 2, valve spring 3 and valve transmission group, cylinder head 4, valve 1, piston 5 and cylinder body 6 common formation firing chambers 7 are provided with spark plug 8 (or oil sprayer) in order to the mixed gas in the firing chamber is lighted on cylinder head 1.Valve 1 is made up of valve head 9 and valve stem 10, and valve head 9 still seals in conical surface mode with cylinder head 4, thus firing chamber 7 and inlet and outlet road is disconnected or conducting.As can be seen from Figure 2, described valve head 9 is positioned at outside the firing chamber 7, valve head 9 from the firing chamber in the 7 export-oriented firing chambers 7 motion valve-closing be there is shown that a valve is opened, the state of a valve-closing.With respect to existing built-in distributing type structure, the utility model with this valve head portion be positioned at outside the firing chamber, export-oriented burning indoor sport is called external distributing type structure with the mode of valve-closing to the valve head from the firing chamber.For valve can be opened and closed reliably, and make the motor cylinder that breaks in appropriate, the utility model has two kinds of control modes to valve: 1, cooperate with valve transmission group and solenoid valve valve is controlled; 2, all valve is controlled with solenoid valve.Respectively this is introduced below, wherein each embodiment all comprises valve head portion and is positioned at outside the firing chamber, the valve head from the firing chamber export-oriented burning indoor sport with this technical characteristics of valve-closing.
One, with valve transmission group and solenoid valve cooperation valve is controlled, mainly contained following two kinds of typical embodiments.The switching of valve transmission group control valve, solenoid valve is used as disconnected cylinder.
Embodiment 1: be provided with rocking arm support 11 and valve and support 12 on cylinder head 4; rocking arm 13 is located at rocking arm by rocker shaft 14 and is supported on 11; valve supports 12 and is provided with valve guide bushing 2; valve stem 10 passes valve guide bushing 2 and is provided with spring seat 15 at the valve stem end, and valve spring 3 is placed on the valve stem 10 and at spring seat 15 and valve and supports between 12.The driving cam 16 of valve transmission group and valve stem were positioned at the homonymy that rocker shaft 14 both sides are positioned at rocking arm 13 simultaneously in 10 minutes, did the force for two that form rocker lever.Solenoid valve 17 reaches and the push rod 18 of solenoid valve 17 pairings is positioned near the rocking arm 13, push rod 18 is provided with push rod return spring 19 and the iron core corresponding with solenoid valve 17, push rod 18 can act on the rocking arm 13 under solenoid valve 17 adhesives, and push rod 18 and cam 16 are positioned at the both sides of rocking arm 13 and rocker shaft 14 simultaneously.If there is not the effect of cam and solenoid valve, under the effect of valve spring, valve will be opened.The unlatching of present embodiment valve is finished by valve spring, and closing by cam-actuated distribution device or solenoid valve of valve finished.
Embodiment 2: on cylinder head 4, be provided with rocking arm support 11 and valve support 12; rocking arm 13 is located at rocking arm by rocker shaft 14 and is supported on 11; valve supports 12 and is provided with valve guide bushing 2; valve stem 10 passes valve guide bushing 2 and rocking arm 13 successively and is provided with stop nut 20 (stop nut of present embodiment is a tapered cup nut) and locking nut 21 at the valve stem end, and stop nut 20 is positioned at 13 on locking nut 21 and rocking arm.Valve spring 3 be placed on the valve stem 10 and between valve head 9 and valve support 12 (because the valve head can replace spring seat in this structure, therefore in embodiment 2, cancelled spring seat), the driving cam 16 of valve transmission group and valve stem were positioned at rocker shaft 14 homonymies in 10 minutes, and valve stem end and driving cam were positioned at rocking arm 13 both sides in 16 minutes.Solenoid valve 17 reaches and the push rod 18 of solenoid valve pairing is positioned near the rocking arm 13, push rod 18 is provided with push rod return spring 19 and the iron core corresponding with solenoid valve, push rod 18 can act on the rocking arm 13 under solenoid valve 17 adhesives, and push rod 18 and cam 16 are positioned at the homonymy of rocking arm 13 and rocker shaft 14 simultaneously.The unlatching of present embodiment valve is finished by cam-actuated distribution device or solenoid valve, and closing by valve spring of valve finished.
Embodiment 1 also has following modification to form embodiment 3, sees Fig. 4, and its essence is the same: cam 16 and valve stem were positioned at rocking arm 13 both sides in 10 minutes and are positioned at rocker shaft 14 homonymies simultaneously, and remaining part is identical.Because solenoid valve is to work when breaking cylinder, its objective is and when cam forwards down stroke to, replace cam to continuingly act on valve stem, finish up to disconnected cylinder, therefore the solenoid valve and the mode of action of cam on rocking arm are in full accord, just cam is intermittently made power, and solenoid valve continues to do power, so the position of cam and the relative valve stem of solenoid valve can be just the same, as shown in Figure 4, and the solenoid valve of Fig. 6 also can be positioned at the position at cam place.Certainly, the solenoid valve among Fig. 4 also can be positioned at the homonymy that the rocker shaft both sides are positioned at rocking arm simultaneously with the valve stem branch.
Two, all valve is controlled with solenoid valve.
Embodiment 4: engine variable-valve distribution mechanism, comprise valve 1, and valve 1 is made up of valve head 9 and valve stem 10, valve head 9 and cylinder head 4 conical surface seals.On cylinder head 4, be provided with valve and support 12, valve supports 12 and is provided with valve guide bushing 2, valve stem 10 passes valve guide bushing 2 and is provided with two solenoid valves 17 of controlling the valve conducting respectively and closing at the valve stem end, is provided with the iron core corresponding with solenoid valve on valve stem.Several embodiments are the same with the front, and valve head 9 is positioned at outside the firing chamber 7, and valve head 9 moves valve-closing in the 7 export-oriented firing chambers 7 from the firing chamber.The conducting of an electromagnetic valve valve in the present embodiment, the closing of an electromagnetic valve valve is so cancelled parts such as valve spring and driving cam.
In order to realize the assembling of valve, the utility model can be divided into cylinder head firing chamber and air distributing device mechanism (being rocking arm support and valve support etc.) two-part.
The utility model not only can reduce combustion chamber volume and height and can increase valve and valve seat sealing surface, and utilize solenoid valve can realize disconnected cylinder of close type valve and the disconnected cylinder of opening type valve, embodiment 1 and embodiment 3 are exactly the disconnected cylinder of close type valve, and embodiment 2 is the disconnected cylinder of opening type valve.Disconnected cylinder is that mean engine degasification door rests on a certain position for a long time and do not carry out work, and fuel supply device (as: oil sprayer, Carburetor, rock gas reduction valve etc.) stops supply of fuel, and ignition mechanism stops outside the igniting, and other component are normally operation still.
The disconnected cylinder of close type valve is meant that valve is in omnidistance closed condition when breaking cylinder, and it is applicable to the automobile of vacuum booster, particularly under the situation of complete disconnected cylinder.Its principle is (seeing Fig. 4 or Fig. 6): when cam reached the extreme higher position of up stroke, the solenoid valve energising made push rod work, replaced cam to withstand rocking arm.During to down stroke, because of the pressure of solenoid valve push rod top power greater than valve spring, spring can't stretch at cam, and valve just can not opened, and rocking arm can return yet, causes cam idle running and makes valve be in closed condition in the solenoid valve galvanization.When needs recover the valve proper functioning, only need the power supply of disconnected power down magnet valve.Also available hydraulic device or mechanical device replace solenoid valve.
Be the opportunity of closing of intake valve when the motor expansion stroke, this moment IC Intake Valve Closes, intake cam is on the summit of range, allows the solenoid valve energising, and valve is maintained static.Be the opportunity of closing of exhaust valve in the engine charge stroke, exhaust valve closing this moment, and exhaust cam allows solenoid valve switch on the summit of range, and valve is maintained static.
The close type valve cylinder that breaks should be by earlier disconnected air inlet, and the principle of the disconnected exhaust in back is carried out, otherwise after the engine charge stroke is finished, and the disconnected cylinder of exhaust valve has been finished, and the high temperature of generation, pressurized gas can't be discharged, and motor is caused damage.
The disconnected cylinder of opening type valve is meant that valve is to be in omnidistance opening state when breaking cylinder, being applicable to does not have vacuum booster, and has the vehicle of EFI fuel supply device.Its principle is a (see figure 3): when cam reaches the peak of up stroke, valve opening, the solenoid valve energising makes the work of solenoid valve push rod, replaces cam to withstand rocking arm, when the cam down stroke, because the top power of solenoid valve push rod is greater than the stretching force of valve spring, and valve spring can't be stretched, rocking arm can't return, valve can not closed yet, and causes cam idle running.In the process that solenoid valve does not cut off the power supply, valve is in opening state always.When valve need be resumed work, need only cut off power of electromagnetic valve.
As long as under the principle of formerly disconnected exhaust, the disconnected air inlet in back, whenever all can break cylinder.Cause in the exhaust stroke as disconnected air inlet meeting earlier high-temperature gas is entered intake duct.
In theory, when motor moves, should have the best configuration that adapts with its operating mode respectively under different operating modes, can make motor under all operating modes, give full play to its potentiality like this, make it reach optimum, obtain optimum performance.For example, exhaust valve in advance just should be smaller during low cruise, to avoid excessive expansion work loss, and the hysteresis of intake valve also should be smaller, in order to avoid intake valve is still being opened after inlet stream inertia exhausts, displaced outside the cylinder again by up piston so that charge into the interior fresh charge of cylinder, and cause charge loss.Therefore, ideal situation is: the whole configuration of motor comprises that valve timing and injection timing or ignition timing are adjustable, and its timing configured can both be regulated and control to the optimum scheme that adapts with its operating mode under any operating mode, motor will greatly improve for the applicability of various uses like this, and its performance is also optimized greatly.Owing to be subjected to the restriction of technical development condition, conventional engines can't reach this point, and the utility model is owing to be provided with solenoid valve, solenoid valve both can with cam and spring assembly, also can be fully by the normal operation or the disconnected cylinder of solenoid valve combination (in this case can without cam drive mechanism) control valve, can make motor reach the ideal situation that whole timing configured comprises the adjustable and disconnected cylinder of valve timing and injection timing or ignition timing in conjunction with prior art again with this controlling method.
Claims (10)
1. engine variable-valve distribution mechanism, comprise valve (1), valve spring (3) and valve transmission group, valve (1) is made up of valve head (9) and valve stem (10), valve head (9) and cylinder head (4) conical surface seal, it is characterized in that: described valve head (9) is positioned at outside the firing chamber (7), and valve head (9) moves valve-closing in (7) export-oriented firing chamber (7) from the firing chamber.
2. engine variable-valve distribution mechanism according to claim 1, it is characterized in that: be provided with on cylinder head (4) that rocking arm supports (11) and valve supports (12); rocking arm (13) is located at rocking arm by rocker shaft (14) and is supported on (11); valve supports (12) and is provided with valve guide bushing (2); valve stem (10) passes valve guide bushing (2) and is provided with spring seat (15) at the valve stem end; described valve spring (3) is placed in valve stem (10) and goes up and be positioned between spring seat (15) and the valve support (12), and driving cam of valve transmission group (16) and valve stem (10) branch are positioned at rocker shaft (14) both sides and are positioned at rocking arm (13) homonymy.
3. engine variable-valve distribution mechanism according to claim 2, it is characterized in that: it also comprises solenoid valve (17) and the push rod (18) that matches with solenoid valve, push rod (18) is provided with push rod return spring (19) and the iron core corresponding with solenoid valve, push rod (18) can act on the rocking arm (13) under solenoid valve (17) adhesive, and push rod (18) and cam (16) are positioned at the both sides of rocking arm (13) and rocker shaft (14) simultaneously.
4. engine variable-valve distribution mechanism according to claim 1, it is characterized in that: be provided with on cylinder head (4) that rocking arm supports (11) and valve supports (12); rocking arm (13) is located at rocking arm by rocker shaft (14) and is supported on (11); valve supports (12) and is provided with valve guide bushing (2); valve stem (10) passes valve guide bushing (2) and is provided with spring seat (15) at the valve stem end; described valve spring (3) is placed in valve stem (10) and goes up and be positioned between spring seat (15) and the valve support (12), and driving cam of valve transmission group (16) and valve stem (10) branch are positioned at rocking arm (13) both sides and are positioned at rocker shaft (14) homonymy.
5. engine variable-valve distribution mechanism according to claim 1, it is characterized in that: be provided with on cylinder head (4) that rocking arm supports (11) and valve supports (12); rocking arm (13) is located at rocking arm by rocker shaft (14) and is supported on (11); valve supports (12) and is provided with valve guide bushing (2); valve stem (10) passes valve guide bushing (2) and rocking arm (13) successively and is provided with stop nut (20) at the valve stem end; described valve spring (3) is placed in valve stem (10) and goes up and be positioned between valve head (9) and the valve support (12); driving cam of valve transmission group (16) and valve stem (10) branch are positioned at rocker shaft (14) homonymy, and valve stem end and driving cam (16) branch are positioned at rocking arm (13) both sides.
6. according to claim 4 or 5 described engine variable-valve distribution mechanisms, it is characterized in that: it also comprises solenoid valve (17) and the push rod (18) that matches with solenoid valve, push rod (18) is provided with push rod return spring (19) and the iron core corresponding with solenoid valve, push rod (18) can act on the rocking arm (13) under solenoid valve (17) adhesive, and push rod (18) and cam (16) are positioned at the homonymy of rocking arm (13) and rocker shaft (14) simultaneously.
7. engine variable-valve distribution mechanism according to claim 3 is characterized in that: described solenoid valve (17) is a hydraulic pressure installation.
8. engine variable-valve distribution mechanism according to claim 6 is characterized in that: described solenoid valve (17) is a hydraulic pressure installation.
9. engine variable-valve distribution mechanism, comprise valve (1), valve (1) is made up of valve head (9) and valve stem (10), valve head (9) and cylinder head (4) conical surface seal, it is characterized in that: on cylinder head (4), be provided with valve and support (12), valve supports (12) and is provided with valve guide bushing (2), valve stem (10) passes valve guide bushing (2) and is provided with two solenoid valves (17) of controlling the valve conducting respectively and closing at the valve stem end, on valve stem (10), be provided with the iron core corresponding with solenoid valve, described valve head (9) is positioned at outside the firing chamber (7), and valve head (9) moves valve-closing in (7) export-oriented firing chamber (7) from the firing chamber.
10. engine variable-valve distribution mechanism according to claim 9 is characterized in that: described solenoid valve (17) is a hydraulic pressure installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201234083U CN201031715Y (en) | 2007-01-24 | 2007-01-24 | Engines variable air valve mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201234083U CN201031715Y (en) | 2007-01-24 | 2007-01-24 | Engines variable air valve mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031715Y true CN201031715Y (en) | 2008-03-05 |
Family
ID=39163607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201234083U Expired - Fee Related CN201031715Y (en) | 2007-01-24 | 2007-01-24 | Engines variable air valve mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031715Y (en) |
-
2007
- 2007-01-24 CN CNU2007201234083U patent/CN201031715Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0803642B1 (en) | Internal combustion engine with variably actuated valves | |
| US4892067A (en) | Valve control system for engines | |
| US20080215228A1 (en) | Variable Valve Drive For a Reciprocating Internal Combustion Engine | |
| US8695544B2 (en) | High expansion ratio internal combustion engine | |
| CN101796268B (en) | Piston engine | |
| CN115263485B (en) | Mechanism for realizing braking in engine cylinder and engine | |
| US20100192892A1 (en) | Hybrid valve for internal combustion engines | |
| CN101012762A (en) | Engine variable-valve distribution mechanism | |
| WO2017041835A1 (en) | Valve arrangement | |
| US7685993B2 (en) | Low cost variable swirl | |
| CN201031715Y (en) | Engines variable air valve mechanism | |
| CN101349174A (en) | Combined valve body external opening distribution engine | |
| WO2015013141A1 (en) | Six stroke internal combustion engine and a method of operation | |
| US5842453A (en) | Device in a cylinder head for an internal combustion engine | |
| CN112112733A (en) | Valve driving structure of engine and using method thereof | |
| CN107882632B (en) | Engine and vehicle | |
| EP0997611B1 (en) | Direct injection internal combustion engine | |
| CN215761938U (en) | Combined engine | |
| US7334564B2 (en) | Throttle and inlet valves for 8 stroke and 4 stroke engines | |
| KR101305821B1 (en) | Variable compression ratio engine | |
| GB2476852A (en) | Variable inlet valve actuation arrangement for a six-stroke IC engine | |
| KR100387867B1 (en) | A variable valve lift control system of engine | |
| WO2016145562A1 (en) | Increased duration intake camshaft with dwell at peak lift | |
| KR100582140B1 (en) | Valve mechanism for internal combustion engine | |
| WO2008073357A2 (en) | Valve actuation system and method of driving two slave pistons with one master piston |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20110124 |