CN1922391A - Valve deactivation device - Google Patents
Valve deactivation device Download PDFInfo
- Publication number
- CN1922391A CN1922391A CN 200580005286 CN200580005286A CN1922391A CN 1922391 A CN1922391 A CN 1922391A CN 200580005286 CN200580005286 CN 200580005286 CN 200580005286 A CN200580005286 A CN 200580005286A CN 1922391 A CN1922391 A CN 1922391A
- Authority
- CN
- China
- Prior art keywords
- arm
- valve
- rocker arm
- arm assembly
- cam
- 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.)
- Pending
Links
Images
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
A valve deactivation device for a rocker arm assembly having a cam arm and a valve arm. A return spring biases a lock pin toward an activated position to allow the cam arm And the valve arm to rotate together. The lock pin can be translated against the biasing force of the return spring to decouple the cam arm and valve arm for relative rotation.
Description
Related application
The application requires to have the provisional application 60/545739 on February 18th, 2004 and the rights and interests of the provisional application 60/546692 on February 20th, 2004, and the full content combination of these two parts of provisional application in this application as a reference.
Technical field
The present invention relates to the valve train of internal-combustion engine on the whole, the Valve deactivation device that relates more specifically to use in valve train (valve deactivation device).
Background technique
Multi-cylinder engine comprises the suction valve that the cylinder head lining that has on each combustion cylinders is put and the valve mechanism of outlet valve.This suction valve and outlet valve couple together suction port and relief opening and each combustion cylinders.Suction valve and outlet valve be poppet valve normally, an elongated cylindrical bar that common mushroom-shaped head is arranged and stretch from valve head.Spring is biased in the valve seat that makes it to prop up on the valve head of contract fully position in the cylinder head.Past, by a underlying (underhead) camshaft, push rod and rocker arm assembly maneuvering engine valve from the contract fully position to full open position.Utilize the hydraulic fluid piston of pressurization to make the reciprocating hydraulic tappet of valve, be installed between rocking arm motion and the valve arm, also be equivalent to a device of regulating the valve clearance as a buffer.In immediate development, overhead (overhead) camshaft has been cancelled push rod, sometimes, and for direct acting valve has also been cancelled rocking arm.
Reducing fuel consumption and improve discharging, particularly for passenger vehicle, is important consideration very for the design of internal-combustion engine.For the consumption that reduces fuel with improve discharging and the change of the engine design made is in engine working process, particularly during partial load, allow each cylinder that a stopping process is arranged.The shutdown of a cylinder has improved air-distributor pressure, therefore, allows remaining cylinder to work under the middle pressure of an increase, thereby reduces specific consumption.For the cylinder of shutting down, not only must interrupts fuel supply with, and by closing one or more valves, particularly the suction valve of cylinder separately will end to flow through the load flow of cylinder separately.
Hope comes cut-off valve with Valve deactivation device in the motor of a job.When valve is deactivated, reduced the frictional loss in the valve train.Some existing Valve deactivation devices comprise that undesirablely some allow production and assembling spend more apparatus assembly.In order to connect once more and rocking arm to be reactivated, other existing apparatus can be realized operation by the assembly of throwing off the rocking arm that needn't reconfigure.Needed is a Valve deactivation device, and it can stop using rocker arm assembly with the motion assembly that lacks than prior art.
Summary of the invention
The present invention is about being used for the rocker arm assembly with Valve deactivation device of valve train.The rocker arm assembly of each valve train can be changed between effect and dead status.In one embodiment, rocker arm assembly comprise the valve arm, with rotatable cam arm that connects of described valve arm and Valve deactivation device.Valve deactivation device connects with cam arm.Valve deactivation device comprise one selectively with the stop pin of the surface engagement of valve arm, the conversion rocker arm assembly is to active state.Stop pin is movable between rest position and working position, and working position is corresponding to active state, and rest position is corresponding to dead status.
In another embodiment, rocker arm assembly comprises valve arm, cam arm and Valve deactivation device.The cam arm rotation is connected on the valve arm.Valve arm and cam arm are usually around a common shaft rotation.This common shaft is a pitman arm shaft.At least the part of valve arm and at least the part of cam arm set concentric with common shaft.Valve deactivation device and rocker arm assembly connect, and change rocker arm assembly between effect and dead status.
In yet another embodiment, the Valve deactivation device that is used for rocker arm assembly comprises a stop pin and the Returnning spring at working position bias voltage stop pin that is connected to the hydraulic actuation of rocker arm assembly.Stop pin selectively embeds a surface of rocker arm assembly, can change rocker arm assembly to active state.Stop pin is movable between rest position and working position, and working position is corresponding to active state, and rest position is corresponding to dead status.
Description of drawings
Fig. 1 is the perspective view of valve train assembly.
Fig. 2 is the perspective view that comprises the rocker arm assembly of Valve deactivation device of the present invention.
Fig. 3 is the rear view of the rocker arm assembly of Fig. 2.
Fig. 4 is the Valve deactivation device perspective view of Fig. 2, and some of them partly dot.
Fig. 5 is that 5-5 along the line cuts open the sectional view of getting among Fig. 2.
Fig. 6 is the sectional view that is similar to Fig. 5, and the Valve deactivation device under dead status of the present invention has been described.
Embodiment
Shown in Figure 1 is valve train assembly 20.This valve train assembly 20 includes axis A-A and attachment bolt 24 and penetratingly inserts wherein a pair of pitman arm shaft 22, some rocker arm assemblies 30 that connect along the rotation of pitman arm shaft 22 axial length directions.On 22 to cylinder head assembly (not shown) of attachment bolt 24 secure rocker.
In Fig. 2-4, rocker arm assembly 30 comprises a cam arm that valve arm 34 arranged at the axle journal place 32, cam arm fixing clamp 36, a spring fixing clamp 38 and an arm spring 40.Cam arm 32 comprise one contain arm portion 52 (Fig. 2) and be generally the cam body part 50 of tubulose and one from that extended off-stream unit or inactive part 54.Arm portion 52 comprises that one is divided into two-part end 58 (Fig. 2) from its 56, of extended cam spring pin, and end 58 is contained one and connected thereon cylinder 60 (Fig. 2) by a roller pin 62 (Fig. 2) rotation.Roller pin 62 is inserted and is divided among two-part end 58 and the cylinder 60.
Specifically with reference to Fig. 5 and Fig. 6, the part 54 of stopping using comprises a common tubular body 88, and in one embodiment, it is the cylinder of the elongation of a sky that end 90 arranged, the cam body part 50 of ining succession.In one embodiment, stop pin 92 is encapsulated in the body 88 at least in part and is provided with a Returnning spring that connects with it 94.The part 54 of stopping using can comprise a Returnning spring 94 and a top cover 96 that is fixed on end 90.Top cover 96 is isolated tubular body 88 and is had a surface that supplies Returnning spring 94 effects to prop up.Replace, end 90 also can be provided with a shoulder that supplies Returnning spring 94 effects to prop up, and therefore top cover 96 needn't be arranged.
2-4 with the aid of pictures again, valve body part 64 is cylinders of the elongation of a sky, and it comprises one first annular end 100 (Fig. 3), second annular end 102 (Fig. 2), a common cylinder valve arm internal surface 104 and a common cylinder valve arm outer surface 106.Valve body part 64 also be included in 106 li of valve arm outer surfaces and respectively with first annular end 100, a pair of ring-type fixed groove 108 that second annular end 102 is adjacent.
Valve contact segment 72 comprises the housing 110 of a fixed interval (FI) regulating device 114.The bar (not shown) that lash adjusting device 114 connects a valve is convenient to handle this bar.
Showed a stop pin 92 in Fig. 5 and Fig. 6, it comprises that is generally a cylindrical pillars plug portion 130, and plunger part 130 comprises and a common cylindrical piston part 136 whole far-end 132 and the near-ends 134 that connect.Lock pin aperture 76 comprises the cylindrical pin surface 140 that is formed on 66 li of arm portions.Tubular body 88 comprises that be generally a cylindrical piston surface 146, that is slidingly connected with piston portion 136 is generally the lubricant oil input channel (not shown) that piston face 146 that columniform pin stretches out 148 and one on surface and the lubricated hydraulic fluid port 152 that limits formation intersects.On the whole, plunger part 130, piston face 146 and piston portion 136 have formed the hydraulic pressure cavity that hereinafter will describe 160.The gap that gap between cylindrical piston surface 146 and the cylindrical piston part 136, cylindrical pillars plug portion 130 and pin stretch out between the surface 148 all is enough little, to such an extent as to when pressure oil being offered hydraulic pressure cavity 160, can in hydraulic pressure cavity 160, set up pressure by lubricant oil supplying mouth 152.
In Fig. 2 and Fig. 3, the valve body part 64 of valve arm 34 is inserted with first annular end 100 and the cam body part 50 of the cam arm 32 of second annular end 102 of stretching out therefrom.(Thuscoupled) cam arm of connecting together 32 is supported on the axle journal with valve arm 34 and does relative rotation around axis A-A.Arm spring 40 is provided with around second annular end 102.The valve pin end 122 of arm spring 40 and 74 combinations of valve spring pin, cam pin end 124 and 56 combinations of cam spring pin.Arm spring 40 selectively bias voltage cam spring pin 56 makes it away from valve spring pin 74.Preferably, arm spring 40 is the part helical springs that at least a portion is arranged around the axis A-A bending.Preferred, arm spring 40 stretches less than 360 ° around axis A-A.Cam arm fixing clamp 36 inserts in the fixed groove 108 with the motion to axial between limiting valve arm 34 and the cam arm 32.Spring fixing clamp 38 inserts in the fixed groove 108 so that arm spring 40 is fixed on the valve body part 64.
See Fig. 5 and Fig. 6 again, stop pin 92 is arranged in the tubular body 88, aligns with lock pin aperture 76.Stop pin 92 can move between working position (Fig. 5) and rest position (Fig. 6).In Fig. 5, at least the far-end 132 of stop pin 92 by 140 of the cylindrical pin surface of lock pin aperture 76 around.In Fig. 6, the force compresses that the pressure oil that the hydraulic pressure cavity that Returnning spring 94 hereinafter will be described between stop pin 92 and top cover 96 is 160 li applies.
In operation, stop pin 92 is in working position shown in Figure 5, and therefore attachment valve arm 34 is convenient to relative rotation with cam arm 32 releasedly.Cam arm fixing clamp 36 stops along relatively moving between axis A-A directional control valve arm 34 and the cam arm 32.When the rotation of camshaft (not shown) and make cylinder 60 allow rocker arm assembly 30 when axis A-A is rotated, valve arm 34 and cam arm 32 rotate together handles a valve (not shown).
For rocker arm assembly 30 is stopped using from active state, introduce pressure oil to hydraulic pressure cavity 160, so make stop pin 92 as far as possible, resist the biasing force of Returnning spring 94 towards top cover 96.When stop pin 92 when lock pin aperture 76 shifts out, valve arm 34 is freely, thereby rotates relatively around cam arm 32, therefore rocker arm assembly 30 is under the dead status.When camshaft continues rotation, promote cylinder 60, cam arm 32 and rotate, and valve arm 34 does not rotate around axis A-A.Because valve arm 34 does not rotate, valve is not worked and has been stopped effectively.Along with the relative rotation of cam arm 32 and valve arm 34, deflection arm spring 40, therefore energy stored and cause to reverse relatively between valve arm 34 and cam arm 32.This reverses and promotes cylinder 60 to keep contacting with camshaft.
In order to make rocker arm assembly 30, from hydraulic pressure cavity 160 release pressure oil, so allow Returnning spring 94 promote stop pin 92 to valve arm 34 directions from deactivated condition.Depend on the relative angular position between valve arm 34 and the cam arm 32, the far-end 132 of stop pin 92 and lock pin aperture 76 or stop pin slip surface 78 contact.When stop pin 92 and stop pin slip surface 78 contact, valve arm 34 will not rotate, arm spring 40 actuating cam arms 32 rotations when camshaft rotates.When cam arm 32 rotation and valve arm 34 when not rotating, the stop pin 92 that contacts with stop pin slip surface 78 is and then done a common circular motion around axis A-A.When camshaft continued rotation, stop pin 92 can align with lock pin aperture 76 and embed in the lock pin aperture, therefore, rocker arm assembly 30 is under the active state.So, by the relative rotation of cam arm 32 and valve arm 34, selectively stop pin 92 is imported in the cylindrical pin surface 140 with the described lock pin aperture 76 of its coupling.
Though can also utilize other common method, preferably flow in the hydraulic pressure cavity 160 by an electronic electromagnetic valve (not shown) control oil.Also preferred, oil flows through solenoid valve, by a passage (not shown) that is in the cylinder head, enters pitman arm shaft 22 then, by valve arm 34, enters cam arm 32, by oily input channel, flow through described oil-feed port 152, enters hydraulic pressure cavity 160.
Stop pin 92 and lock pin aperture 76 can be common tapers, so that the diameter of far-end 132 is littler than the diameter of near-end 134.Such taper is arranged, and stop pin 92 can be arranged with drive fit with lock pin aperture 76 and be connected, therefore, reduce any a spot of relative rotation between cam arm 32 and valve arm 34.Though the inactive part 54 that preamble is described depends on valve arm 34, also can allow the inactive other parts that partly depend on cam arm 32 or valve train assembly 20 realize identical purpose.Though some components of valve train assembly are described as tubulose or cylindrical, the annex that also is appreciated that some and they in these components at least can form other the shape except that circle, finishes at least some identical functions.
Be, and above-described content is for purpose of illustration rather than restriction purpose with should be appreciated that.Those skilled in the art are easy to expect some embodiments after the description of reading above.Therefore, the present invention's scope required for protection not only is confined to top description, but opposite, covers the various equivalency range that are included in the claim of the present invention in the claim that it is intended to add with this paper.
Claims (22)
1, rocker arm assembly with Valve deactivation device, wherein rocker arm assembly is selectively changed between active state and dead status, and rocker arm assembly comprises:
A valve arm;
One with the rotatable cam arm that connects of described valve arm;
A Valve deactivation device that connects with described cam arm, described Valve deactivation device have one selectively with the stop pin of the surface engagement of described valve arm, wherein, described stop pin is movable between rest position and working position, described working position is corresponding to described active state, and described rest position is corresponding to described dead status.
2, rocker arm assembly as claimed in claim 1, also comprise an arm spring that selectively connects with described valve arm and described cam arm, wherein, described arm spring is described valve arm of bias voltage and described cam arm on the contrary, so, between them, caused relative reversing.
3, rocker arm assembly as claimed in claim 2, wherein said arm spring comprises a curved portion, wherein said curved portion is opened up less than 360 ° around the shaft extension of described curved portion.
4, rocker arm assembly as claimed in claim 1, the part of wherein said valve arm is inserted at least a portion of cam arm.
5, rocker arm assembly as claimed in claim 1 also comprises a Returnning spring at the described stop pin of described working position bias voltage.
6, around a common shaft rotation, described common shaft is a pitman arm shaft usually for rocker arm assembly as claimed in claim 1, wherein said valve arm and described cam arm.
7, rocker arm assembly as claimed in claim 1, at least a portion of wherein said valve arm and at least a portion of described cam arm are set at common shaft concentric.
8, rocker arm assembly as claimed in claim 7, the axis of wherein said stop pin selectively around described common shaft along a common circular motion.
9, rocker arm assembly as claimed in claim 1, wherein said cam arm comprise a roller driven member.
10, rocker arm assembly as claimed in claim 1, wherein said stop pin relatively rotates by described cam arm and described valve arm, selectively is guided the described surface binding with described valve arm.
11, rocker arm assembly as claimed in claim 1 also comprises a lash adjusting device that connects with described valve arm.
12, rocker arm assembly with Valve deactivation device, wherein rocker arm assembly is changed between active state and dead status, and rocker arm assembly comprises:
A valve arm;
One with the rotatable cam arm that connects of described valve arm, wherein said valve arm and described cam arm are usually around a common shaft rotation, described common shaft is a pitman arm shaft, and at least a portion of wherein said valve arm and at least a portion of described cam arm are set at described common shaft concentric; And
A Valve deactivation device that connects with described rocker arm assembly.
13, rocker arm assembly as claimed in claim 12 also comprises an arm spring that selectively connects with described valve arm and described cam arm, and wherein, described valve arm of described arm spring bias voltage and described cam arm make their counterrotatings.
14, rocker arm assembly as claimed in claim 13, wherein said arm spring comprises a curved portion, wherein said curved portion is opened up less than 360 ° around the shaft extension of described curved portion.
15, rocker arm assembly as claimed in claim 12, wherein said cam arm comprise a roller driven member.
16, rocker arm assembly as claimed in claim 12 also comprises a lash adjusting device.
17, rocker arm assembly as claimed in claim 12, wherein said Valve deactivation device is a hydraulically operated.
18, rocker arm assembly as claimed in claim 17, wherein said Valve deactivation device are with electronically controlled.
19, Valve deactivation device that is used for rocker arm assembly, rocker arm assembly is selectable to be changed between active state and dead status, and Valve deactivation device comprises:
A hydraulically operated stop pin that is connected to rocker arm assembly, wherein said stop pin selectively enters described rocker arm assembly, change described rocker arm assembly to active state, wherein said stop pin is movable between rest position and working position, described working position is corresponding to active state, and described rest position is corresponding to dead status; And
A Returnning spring described stop pin of bias voltage in one of described rest position and described working position.
20, Valve deactivation device as claimed in claim 19, wherein said Valve deactivation device are with electronically controlled.
21, Valve deactivation device as claimed in claim 19 also comprises a hydraulic pressure cavity, wherein supplies with the pressure fluid of described hydraulic pressure cavity, and described stop pin is moved towards one of described rest position and described working position.
22, Valve deactivation device as claimed in claim 21, wherein said stop pin to small part is arranged in described hydraulic pressure cavity.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54573904P | 2004-02-18 | 2004-02-18 | |
| US60/545,739 | 2004-02-18 | ||
| US60/546,692 | 2004-02-20 | ||
| US11/060,663 | 2005-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1922391A true CN1922391A (en) | 2007-02-28 |
Family
ID=37779332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580005286 Pending CN1922391A (en) | 2004-02-18 | 2005-02-18 | Valve deactivation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1922391A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103038459A (en) * | 2010-06-02 | 2013-04-10 | 本田技研工业株式会社 | Valve control apparatus for internal combustion engine |
| CN113167146A (en) * | 2018-12-07 | 2021-07-23 | 雅各布斯车辆系统公司 | Valve actuation system including two rocker arms and a tightening mechanism |
-
2005
- 2005-02-18 CN CN 200580005286 patent/CN1922391A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103038459A (en) * | 2010-06-02 | 2013-04-10 | 本田技研工业株式会社 | Valve control apparatus for internal combustion engine |
| CN103038459B (en) * | 2010-06-02 | 2015-05-20 | 本田技研工业株式会社 | Valve control apparatus for internal combustion engine |
| CN113167146A (en) * | 2018-12-07 | 2021-07-23 | 雅各布斯车辆系统公司 | Valve actuation system including two rocker arms and a tightening mechanism |
| CN113167146B (en) * | 2018-12-07 | 2022-09-27 | 雅各布斯车辆系统公司 | Valve actuation system including two rocker arms and a tightening mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7080615B2 (en) | System and method for actuating an engine valve | |
| US20050188930A1 (en) | Valve deactivation device | |
| JP2810442B2 (en) | Engine Valve Actuator | |
| US7255075B2 (en) | Engine valve actuation system | |
| CN102159800B (en) | Engine braking device for an internal combustion engine | |
| CN101054912A (en) | Cylinder deactivation apparatus | |
| EP2171223B1 (en) | Device and method for controlling valves | |
| JPS61157709A (en) | Valve row device for internal combustion engine | |
| JPH03130509A (en) | Valve actuating device of engine | |
| US6474296B2 (en) | Lash adjustment for use with an actuator | |
| JPH11159314A (en) | Structure and method for controlling valve for reversible diesel engine | |
| US5735242A (en) | Fuel pressure activated engine compression braking system | |
| CN103270256A (en) | Anti-rotation Roller Valve Lifter | |
| DE102008009942A1 (en) | Engine / valve train with cam followers mounted on a shaft with dual independent backlash adjusters | |
| US6405707B1 (en) | Integral engine and engine compression braking HEUI injector | |
| CN1922391A (en) | Valve deactivation device | |
| GB2543413A (en) | Valve actuating apparatus for an internal combustion engine | |
| US6769385B1 (en) | System for controlling engine valve seating velocity | |
| CN114096743A (en) | Variable valve mechanism for engine braking mode | |
| CN219826943U (en) | Engine valve driving mechanism | |
| US20230272726A1 (en) | Tappet assembly for valve lift profile modification | |
| US20080053388A1 (en) | Springless valve system | |
| US20070215080A1 (en) | Variable valve actuation | |
| JPS61237843A (en) | Multi-cylinder engine for vehicle | |
| KR20070022645A (en) | Valve deactivation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070228 |