CN201144718Y - Cylinder brake type brake device - Google Patents
Cylinder brake type brake device Download PDFInfo
- Publication number
- CN201144718Y CN201144718Y CNU2008200164270U CN200820016427U CN201144718Y CN 201144718 Y CN201144718 Y CN 201144718Y CN U2008200164270 U CNU2008200164270 U CN U2008200164270U CN 200820016427 U CN200820016427 U CN 200820016427U CN 201144718 Y CN201144718 Y CN 201144718Y
- Authority
- CN
- China
- Prior art keywords
- cam
- cylinder
- camshaft
- braked
- double
- 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
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- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a cylinder brake type brake device, which comprises an air intake valve cam used to control an air intake valve, and an exhaust valve used to control an exhaust valve, which are fixed on the camshaft of an engine. The camshaft can drive the air intake valve cam and the exhaust valve camshaft axially and synchronously moved. The camshaft is also fixedly provided with a cylinder brake single cam which continuously controls the air intake valve after the air intake valve cam moves. A single cam transition part is arranged between the cylinder brake single cam and the air intake valve cam. The height of the single cam transition part is gradually increased from the side of the air intake valve cam to the side of the cylinder brake single cam. The cylinder brake type brake device can achieve the idea braking effect, and has less impact on the engine.
Description
Technical field
The utility model relates to a kind of braking device, especially relates to a kind of cylinder brake type braking device that adopts the cylinder braking.
Background technique
Growing and the people of automotive engineering are to the raising of safety requirement at present, the braking system of automobile has obtained bigger development, the brake technology also is gradually improved, but its braking effect does not still reach desirable effect, automobile appears after long-time, long distance, high-intensity brake, owing to brake block surface high temperature cabonization causes brake failure, security incident appears.And existing automobile exhaust braking also exists: outlet pipe is overheated, causes the vehicle spontaneous combustion; Outlet valve too limits the damage that throughput causes engine components such as cylinder pad, piston, connecting rod even bent axle, and is bigger to the influence of motor; And severity of braking is when very big, shortcoming such as effect is still bad.
Summary of the invention
Technical problem to be solved in the utility model has provided and a kind ofly can reach desirable braking effect and to the less cylinder brake type braking device of motor influence.
For solving the problems of the technologies described above, the technical solution of the utility model is: cylinder brake type braking device, comprise and be fixed with the exhaust valve cam that is used to control the inlet valve cam of intake valve and is used to control exhaust valve on the engine cam, described camshaft can drive inlet valve cam and exhaust valve cam axially moves synchronously, also is fixed with the cylinder that continues the control intake valve after inlet valve cam moves on the described camshaft and brakes single cam; Described cylinder is braked and is provided with single cam transition part between single cam and the inlet valve cam, and single cam transition part height is braked single cam side by inlet valve cam side direction cylinder and increased gradually.
As a kind of improvement, be positioned on the described camshaft cylinder brake single cam away from inlet valve cam one side be provided with by two be the cylinder braking double-cam portion that the cam of axle center symmetry constitutes with the camshaft, cylinder is braked single cam and is braked between the double-cam portion with cylinder and be provided with the double-cam transition part; It is corresponding and be positioned at the homonymy of camshaft that one cam of described cylinder braking double-cam portion and cylinder are braked single cam, and the height of braking the double-cam transition part part between single cam at this cam and cylinder is corresponding with this cam, and another cam and cylinder are braked double-cam transition part height partly between single cam and braked single cam side direction cylinder by cylinder and brake double-cam portion side and increase gradually in the described cylinder braking double-cam portion.
As further improvement, described cylinder is braked single cam between inlet valve cam and exhaust valve cam.
The cylinder brake type braking device of technique scheme, owing to be to have adopted to be fixed with the exhaust valve cam that is used to control the inlet valve cam of intake valve and is used to control exhaust valve on the engine cam, camshaft can drive inlet valve cam and exhaust valve cam axially moves synchronously, also is fixed with the cylinder that continues the control intake valve after inlet valve cam moves on the camshaft and brakes single cam; Cylinder is braked and is provided with single cam transition part between single cam and the inlet valve cam, single cam transition part height is braked single cam side by inlet valve cam side direction cylinder and is increased gradually, like this when carrying out the cylinder braking, can drive inlet valve cam and axial synchronous the moving of exhaust valve cam by camshaft, make exhaust valve cam remove with the exhaust valve control gear in exhaust valve putter do not contact, intake valve then continues to brake single cam by single cam transition part and cylinder and controls air inlet, thereby do not influence closing of exhaust valve when making the camshaft running, reach braking effect; Control and brake single cam, make cylinder braking force variable and can control, thereby reach better more rational effect, to adapt to the road surface of different gradients by single cam transition part and cylinder.And be the cylinder braking double-cam portion that the cam of axle center symmetry constitutes with the camshaft by on camshaft, being provided with by two, cylinder is braked between single cam and the cylinder braking double-cam portion and is provided with the double-cam transition part, at a motor inside cylinder service cycle air inlet chance is arranged twice like this, thereby provide enough air to cylinder, make braking absorb the approximate twice that energy is single cam braking, and progressively increase braking force by the double-cam transition part, to obtain bigger braking force.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Accompanying drawing is the principle schematic of the utility model cylinder brake type braking device.
Embodiment
As shown in drawings, cylinder brake type braking device, comprise on the motor camshaft 9 by driving gear 91 transmissions, be fixed with inlet valve cam 1 and exhaust valve cam 2 on the camshaft 9, inlet valve cam 1 is used to control intake valve 5, exhaust valve cam 2 is used to control exhaust valve 6, and piston 7 promotes connecting rod 8 and drives the engine crankshaft running under the oily vapour work by combustion in cylinder.Camshaft 9 can drive inlet valve cam 1 and exhaust valve cam 2 axial same moved further, can adopt and widen driving gear 91, make driving gear 91 modes relative and that its meshed gears slides realize that camshaft 9 drives inlet valve cam 1 and exhaust valve cam 2 axial same moved further, on camshaft 9, be fixed with the cylinder that after inlet valve cam 1 moves, continues control intake valve 5 and brake single cam 3, and it is also corresponding with the same end that inlet valve cam 1 is positioned at camshaft 9 that cylinder is braked single cam 3, cylinder is braked single cam 3 can adopt shape with inlet valve cam 1, highly identical mode, to guarantee rationality to intake valve control, be provided with single cam transition part 31 between single cam 3 and the inlet valve cam 1 and brake at cylinder
Single cam transition part 31 height are braked single cam 3 sides by inlet valve cam 1 side direction cylinder and are increased gradually, both can adopt with camshaft axle center direction and do inlet valve cam 1 projection, make the projection of single cam transition part 31 parts not exceed the inlet valve cam projection, make single cam transition part 31 height increase to gradually by inlet valve cam 1 side that to brake the height of single cam 3 identical with cylinder, to reach flatness to intake valve control; Like this camshaft 9 slide make exhaust valve cam 2 remove with the exhaust valve control gear in exhaust valve putter do not contact, intake valve 5 then continuation is braked single cam 3 by single cam transition part 31 and cylinder and is controlled air inlet, thereby do not influence closing of exhaust valve 6 when making camshaft 9 runnings, reach braking effect; Control and brake single cam 3, make cylinder braking force variable and can control, thereby reach better more rational effect, to adapt to the road surface of different gradients by single cam transition part 31 and cylinder.
As shown in drawings, be positioned on the camshaft 9 cylinder brake single cam 3 away from inlet valve cam 1 one sides be provided with by two be the cylinder braking double-cam portion 4 that the cam of axle center symmetry constitutes with camshaft 9, cylinder is braked single cam 3 and is braked between the double-cam portion 4 with cylinder and be provided with double-cam transition part 41; It is corresponding and be positioned at the homonymy of camshaft 9 that one cam of cylinder braking double-cam portion 4 and cylinder are braked single cam 3, and brake the shape of double-cam transition part 41 parts between single cam 3 at this cam and cylinder, height is also corresponding with this cam, and the height that another cam and cylinder are braked double-cam transition part 41 parts between single cam 3 in the cylinder braking double-cam portion 4 is braked single cam 3 side direction cylinders by cylinder and is braked double-cam portion 4 sides and increase gradually, both can adopt the projection of making this transition portion with camshaft axle center direction to make the projection of itself and single cam transition part with camshaft axle center symmetry, cylinder braking force can be controlled, to guarantee rationality to intake valve control, flatness, thereby reach better more rational effect, to adapt to the road surface of different gradients; Such structure, at a motor inside cylinder service cycle air inlet chance is arranged twice, thereby provide enough air, make braking absorb the approximate twice that energy is single cam braking to cylinder, and progressively increase braking force by the double-cam transition part, to obtain bigger braking force.And for the convenience of controlling, cylinder is braked single cam 3 between inlet valve cam 1 and exhaust valve cam 2, like this cylinder is braked double-cam portion 4 and is located at cylinder and brakes between single cam 3 and the exhaust valve cam 2; Can certainly adopt and cylinder is braked single cam 3 and cylinder braking double-cam portion 4 be located at the outside, both be located at and be positioned at the side of inlet valve cam 1 on the camshaft 9 away from exhaust valve cam 2.
When this cylinder brake type braking device uses, throttle generally can adopt closed condition, but when the big braking force of the gradient is not enough, can be by throttle to improve the tightness of cylinder, conversion by gear simultaneously obtains a rational braking moment, to reach the reasonable combination of controlling with speed.And this cylinder brake type braking device not only is confined to the use on the vehicle, also can be widely used in the field that other uses internal-combustion engine or similar internal combustion engine principle (as steamer etc.) and need keep lasting braking force.
Claims (3)
1, cylinder brake type braking device, comprise and be fixed with inlet valve cam (1) that is used to control intake valve (5) and the exhaust valve cam (2) that is used to control exhaust valve (6) on the engine cam (9), it is characterized in that: described camshaft (9) can drive inlet valve cam (1) and the axial same moved further of exhaust valve cam (2), also is fixed with the cylinder that continues control intake valve (5) after inlet valve cam (1) moves on the described camshaft (9) and brakes single cam (3); Described cylinder is braked between single cam (3) and the inlet valve cam (1) and is provided with single cam transition part (31), and single cam transition part (31) height is braked single cam (3) side by inlet valve cam (1) side direction cylinder and increased gradually.
2, cylinder brake type braking device as claimed in claim 1, it is characterized in that: be positioned on the described camshaft (9) cylinder brake single cam (3) away from an end of inlet valve cam (1) be provided with by two be the cylinder braking double-cam portion (4) that the cam of axle center symmetry constitutes with camshaft (9), cylinder is braked single cam (3) and is braked between the double-cam portion (4) with cylinder and be provided with double-cam transition part (41); One cam of described cylinder braking double-cam portion (4) and cylinder are braked single cam (3) and are positioned at camshaft (9) homonymy and corresponding, and being positioned at this cam and cylinder, to brake the height of double-cam transition part (41) part between single cam (3) corresponding with this cam, and another cam and cylinder are braked double-cam transition part (41) height partly between single cam (3) and braked single cam (3) side direction cylinder by cylinder and brake double-cam portion (4) side and increase gradually in the described cylinder braking double-cam portion (4).
3, cylinder brake type braking device as claimed in claim 1 or 2, it is characterized in that: described cylinder is braked single cam (3) and is positioned between inlet valve cam (1) and the exhaust valve cam (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200164270U CN201144718Y (en) | 2008-01-09 | 2008-01-09 | Cylinder brake type brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200164270U CN201144718Y (en) | 2008-01-09 | 2008-01-09 | Cylinder brake type brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144718Y true CN201144718Y (en) | 2008-11-05 |
Family
ID=40081594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200164270U Expired - Fee Related CN201144718Y (en) | 2008-01-09 | 2008-01-09 | Cylinder brake type brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201144718Y (en) |
-
2008
- 2008-01-09 CN CNU2008200164270U patent/CN201144718Y/en not_active Expired - Fee Related
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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: 20081105 Termination date: 20120109 |