CN201891446U - Engine valve bridge component - Google Patents
Engine valve bridge component Download PDFInfo
- Publication number
- CN201891446U CN201891446U CN2010206273669U CN201020627366U CN201891446U CN 201891446 U CN201891446 U CN 201891446U CN 2010206273669 U CN2010206273669 U CN 2010206273669U CN 201020627366 U CN201020627366 U CN 201020627366U CN 201891446 U CN201891446 U CN 201891446U
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- valve
- cap
- valve cap
- bridge
- valve bridge
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Abstract
The utility model discloses an engine valve bridge component used for cooperatively realizing VVEB (Variable Valve Exhaust Brake) engine brake, which comprises a valve bridge and a valve cap which is arranged at one side of the valve bridge and can be independently controlled, and the valve cap is in a step cylinder-shaped structure with a small top and a large bottom; and when the engine brake component works, a braking piston positioned on the upper end of the valve cap presses down the valve cap so as to make the valve cap move downwards relative to the valve bridge and further open the corresponding valve. The installation position of the valve cap at one end of the valve bridge is provided with a lower cylindrical surface, a bearing surface and a positioning cylindrical surface, the lower cylindrical surface of the valve bridge is in clearance fit with a large cylindrical surface of the valve cap, the positioning cylindrical surface of the valve bridge is in clearance fit with a small cylindrical surface of the valve cap, and after the valve cap is installed, a ledge surface of the valve cap is abutted to the bearing surface of the valve bridge. With the special structural design of the valve bridge component, a single exhaust valve can be opened when VVEB works.
Description
Technical field
The utility model relates to the air valve bridge in a kind of heat engine field, particularly a kind of air valve bridge assembly that is applied to cylinder inside brake (VVEB).
Background technique
At present, enhancing along with social safety consciousness, on the basis that the Abgasgesetz of motor is progressively upgraded, the rules of secure context are also progressively mentioned on the agenda, to the safety of guaranteeing the people be the secure context of purpose technology such as hydrodynamic retarder, engine cylinder inside brake technology---V V E B is being fermented to be applied on the passenger vehicle.General car load braking system except the active braking brake system that car load is equipped with, also is equipped with exhaust dish valve auxiliary brake system in addition now.But there is following defective in the braking system of this kind configuration: (1) engine reliability reduces: because the only simple exhaust dish valve auxiliary brake that adopts, for the auxiliary braking effect of pursuing, must strengthen engine exhaust door spring installation pretightening force, cause that spring force heightens, the engine valve actuating mechanism wearing and tearing accelerate, reliability reduces; (2) the car load braking force is low, only accounts for about the 15%-25% of engine power, causes braking system part exchanging frequency higher relatively, working service cost height.
On the basis of existing braking system, engine cylinder inside brake technology---the working principle of V V E B is: V V E B work, utilize motor self transfer regularity to open exhaust valve, and keep the throttle opening of valve.Exhaust valve all keeps an aperture in four strokes, the exhaust of limit compression margin knot stream has not just had pressure air in the cylinder during to expansion stroke when compression stroke, has not just had the pressure return piston yet, so just can allow motor produce pumping loss.If cooperate exhaust dish valve, improve exhaust resistance, then braking force is higher.V V E B engine cylinder inside brake technology has following characteristics: 1, when V V E B works, this moment, motor was equivalent to an air compressor, absorbed the kinergety to vehicle, reached the purpose that stops vehicle movement; 2, V VE B cooperates exhaust dish valve auxiliary brake, can suitably reduce exhaust valve spring installation pretightening force, make the distribution device part be in the state of relative equilibrium, and the car load braking force can reach more than the 50%-60% engine power, and braking force is higher.
And realize V V E B engine braking in order to cooperate, the air valve bridge of conventional construction can't satisfy the requirement that V V E B opens single exhaust valve.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, by the special construction design of air valve bridge assembly, can to open single exhaust valve when VVEB works.
Engine valve axle assemble of the present utility model is used for cooperating and realizes the VVEB engine braking, and the separately controllable valve cap that comprises air valve bridge and be installed on air valve bridge one side, valve cap are up-small and down-big ladder cylindrical-shaped structure; When the engine brake assembly was worked, the brake piston that is positioned at the valve cap upper end pressed down valve cap, makes valve cap do with respect to air valve bridge and moves downward, and then open corresponding valve.
Wherein, air valve bridge one end, valve cap installed position are set cylndrical surface, supporting surface and positioning cylindrical surface, the great circle cylinder Spielpassung of the following cylndrical surface of air valve bridge and valve cap ladder cylindrical-shaped structure, the roundlet cylinder Spielpassung of the positioning cylindrical surface of air valve bridge and valve cap ladder cylindrical-shaped structure, after valve cap was installed, the circular bead surface of valve cap was connected on the supporting surface of air valve bridge.
Wherein, draw-in groove is established in the upper end of valve cap, and draw-in groove can be used for a ccontaining snap ring and comes off from air valve bridge to avoid valve cap.
Wherein, the great circle cylinder of valve cap inside is hollow structure, and the size of hollow structure and corresponding valve top structure size are suitable, so that realize that valve cap is connected with the firm of valve.
Wherein, move on the brake piston when breaking away from the valve cap plane, valve moves under the elastic force effect of valve spring and closes, and this moment, the circular bead surface of valve cap was connected on the supporting surface of air valve bridge.
Compared with prior art, the utlity model has following beneficial effect:
1, the corresponding structural design of valve cap and air valve bridge makes can make things convenient for when using VVEB and opens one of them valve separately, does not influence the proper functioning of another valve simultaneously;
2, this air valve bridge modular construction is simple, part is few, cost is low, is applicable to the motor of coupling VVEB function is controlled, and working service is convenient.
Description of drawings
Fig. 1 is the three-dimensional erection drawing of the utility model air valve bridge assembly;
Fig. 2 is the perspective view of air valve bridge in the utility model air valve bridge assembly;
Fig. 3 is the perspective view of valve cap in the utility model air valve bridge assembly;
Fig. 4 is the scheme of installation (schematic representation when wherein 4a be valve-closing, schematic representation when 4b be valve opening) of the utility model air valve bridge assembly on motor;
Fig. 5 is the utility model air valve bridge assembly another scheme of installation on motor;
Fig. 6 is three scheme of installation of the utility model air valve bridge assembly on motor.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-air valve bridge; The 2-valve cap; Cylndrical surface under the 3-air valve bridge; 4-air valve bridge supporting surface; 5-air valve bridge positioning cylindrical surface; Plane, 6-air valve bridge top; 7-valve cap inner top surface; 8-valve cap circular bead surface; 9-valve cap great circle cylinder; 10-valve cap roundlet cylinder; The 11-draw-in groove; Plane on the 12-valve cap; The 13-cylinder head assembly; 14-pitman arm shaft parts; The 15-brake assembly; The 16-brake piston; The 17-valve; The 18-cushion block; The 19-solenoid valve; The 20-oil inlet pipe.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.
As shown in Figure 1 to Figure 3, the utility model provides a kind of engine valve axle assemble.This air valve bridge assembly comprises air valve bridge 1 and valve cap 2, is provided with cylndrical surface 3, supporting surface 4, positioning cylindrical surface 5 and plane 6, air valve bridge top down on air valve bridge 1.Valve cap 2 is up-small and down-big ladder cylindrical-shaped structure, comprise the last plane 12 (referring to Fig. 4) that contacts with brake piston 16 on the brake assembly 15, the roundlet cylinder 10 that cooperates with the positioning cylindrical surface 5 of air valve bridge 1, the great circle cylinder 9 that cooperates with the following cylndrical surface 3 of air valve bridge 1 in addition.The intersection of the large and small cylndrical surface of valve cap is provided with a circular bead surface 8, can offset with the supporting surface 4 on the air valve bridge 1 to contact.On roundlet cylinder 10, also be provided with a draw-in groove 11, can a snap ring be installed, valve cap 2 can not be deviate from from air valve bridge 1 in this position.Great circle cylinder 9 inside of valve cap are hollow structure, and the size of hollow structure and corresponding valve top structure size are suitable.
Further as Fig. 4 a, Fig. 4 b, Fig. 5 and shown in Figure 6, be provided with valve 17 on cylinder head 13, pitman arm shaft parts 14 are installed on the cylinder head assembly 13, and brake assembly 15 can be bearing on the cylinder head assembly 13 by cushion block 18; Partly or entirely be bearing on the pitman arm shaft parts 14.Fig. 4 a shows not open mode of valve, valve open mode when Fig. 4 b shows VVEB work.When needs VVEB works, solenoid valve 19 on the brake assembly 15 is accepted to open behind the outer incoming telephone signal, after entering into solenoid valve 19 by oil inlet pipe 20, cleaning machine oil with certain pressure is diverted to each cylinder brake piston 16, driving brake piston 16 stretches out downwards and acts on the valve cap 2, unseat the valve 17, thus cooperate the function that realizes VVEB.
Air valve bridge assembly of the present utility model comprises air valve bridge and valve cap, and valve cap is provided with circular bead surface and is supported on the air valve bridge, makes can be easy to open one of them valve when using VVEB, does not influence the proper functioning of another valve simultaneously; This air valve bridge modular construction is simple, part is few, cost is low, is applicable to the motor of coupling VVEB function is controlled, and working service is convenient.
More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (5)
1. an engine valve axle assemble is used for cooperating and realizes the VVEB engine braking, it is characterized in that the separately controllable valve cap that comprises air valve bridge and be installed on air valve bridge one side, valve cap are up-small and down-big ladder cylindrical-shaped structure; When the engine brake assembly was worked, the brake piston that is positioned at described valve cap upper end pressed down valve cap, makes valve cap do with respect to air valve bridge and moves downward, and then open corresponding valve.
2. engine valve axle assemble according to claim 1, it is characterized in that, described air valve bridge one end, valve cap installed position are set cylndrical surface, supporting surface and positioning cylindrical surface, the described cylndrical surface down of air valve bridge and the great circle cylinder Spielpassung of valve cap ladder cylindrical-shaped structure, the roundlet cylinder Spielpassung of the described positioning cylindrical surface of air valve bridge and valve cap ladder cylindrical-shaped structure, after valve cap was installed, the circular bead surface of valve cap was connected on the described supporting surface of air valve bridge.
3. engine valve axle assemble according to claim 1 and 2 is characterized in that draw-in groove is established in the upper end of described valve cap, and draw-in groove is used for a ccontaining snap ring and avoids valve cap to come off from air valve bridge.
4. engine valve axle assemble according to claim 2 is characterized in that, the great circle cylinder inside of described valve cap is hollow structure, and the size of hollow structure and corresponding valve top structure size are suitable.
5. engine valve axle assemble according to claim 4, it is characterized in that, move on the described brake piston when breaking away from the valve cap plane, valve moves under the elastic force effect of valve spring and closes, and this moment, the circular bead surface of valve cap was connected on the supporting surface of air valve bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206273669U CN201891446U (en) | 2010-11-23 | 2010-11-23 | Engine valve bridge component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206273669U CN201891446U (en) | 2010-11-23 | 2010-11-23 | Engine valve bridge component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891446U true CN201891446U (en) | 2011-07-06 |
Family
ID=44220924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206273669U Expired - Fee Related CN201891446U (en) | 2010-11-23 | 2010-11-23 | Engine valve bridge component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891446U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216285A (en) * | 2013-04-09 | 2013-07-24 | 安徽江淮汽车股份有限公司 | Air door bridge and top camshaft engine |
| CN105275522A (en) * | 2015-12-04 | 2016-01-27 | 广西玉柴机器股份有限公司 | Valve bridge assembly |
| CN105464738A (en) * | 2015-12-30 | 2016-04-06 | 广西玉柴机器股份有限公司 | Oil inlet pipe assembly of engine in-cylinder brake |
| CN109642478A (en) * | 2016-08-31 | 2019-04-16 | 雅各布斯车辆***公司 | Removable air valve bridge and the valve actuation system including removable air valve bridge |
| WO2019228671A1 (en) * | 2018-05-31 | 2019-12-05 | Eaton Intelligent Power Limited | Primary and auxiliary variable valve actuation valvetrain |
| CN110925043A (en) * | 2019-11-28 | 2020-03-27 | 哈尔滨东安汽车动力股份有限公司 | Roller rocker arm and mechanical tappet structure for inclined engine |
| CN112292514A (en) * | 2018-06-29 | 2021-01-29 | 雅各布斯车辆***公司 | Engine valve actuation system with lost motion valvetrain components including a collapsed valve bridge with a locking pin |
| CN113389610A (en) * | 2021-06-28 | 2021-09-14 | 广西玉柴机器股份有限公司 | Valve bridge |
-
2010
- 2010-11-23 CN CN2010206273669U patent/CN201891446U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216285A (en) * | 2013-04-09 | 2013-07-24 | 安徽江淮汽车股份有限公司 | Air door bridge and top camshaft engine |
| CN103216285B (en) * | 2013-04-09 | 2015-05-06 | 安徽江淮汽车股份有限公司 | Air door bridge and top camshaft engine |
| CN105275522A (en) * | 2015-12-04 | 2016-01-27 | 广西玉柴机器股份有限公司 | Valve bridge assembly |
| CN105464738A (en) * | 2015-12-30 | 2016-04-06 | 广西玉柴机器股份有限公司 | Oil inlet pipe assembly of engine in-cylinder brake |
| CN109642478A (en) * | 2016-08-31 | 2019-04-16 | 雅各布斯车辆***公司 | Removable air valve bridge and the valve actuation system including removable air valve bridge |
| CN109642478B (en) * | 2016-08-31 | 2021-04-13 | 雅各布斯车辆***公司 | Removable valve bridge and valve actuation system including same |
| WO2019228671A1 (en) * | 2018-05-31 | 2019-12-05 | Eaton Intelligent Power Limited | Primary and auxiliary variable valve actuation valvetrain |
| CN112292514A (en) * | 2018-06-29 | 2021-01-29 | 雅各布斯车辆***公司 | Engine valve actuation system with lost motion valvetrain components including a collapsed valve bridge with a locking pin |
| CN110925043A (en) * | 2019-11-28 | 2020-03-27 | 哈尔滨东安汽车动力股份有限公司 | Roller rocker arm and mechanical tappet structure for inclined engine |
| CN113389610A (en) * | 2021-06-28 | 2021-09-14 | 广西玉柴机器股份有限公司 | Valve bridge |
| CN113389610B (en) * | 2021-06-28 | 2024-05-10 | 广西玉柴机器股份有限公司 | Valve bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20161123 |