CN2685577Y - Motorcycle engine distribution cam phase modifier - Google Patents
Motorcycle engine distribution cam phase modifier Download PDFInfo
- Publication number
- CN2685577Y CN2685577Y CN 200420033323 CN200420033323U CN2685577Y CN 2685577 Y CN2685577 Y CN 2685577Y CN 200420033323 CN200420033323 CN 200420033323 CN 200420033323 U CN200420033323 U CN 200420033323U CN 2685577 Y CN2685577 Y CN 2685577Y
- Authority
- CN
- China
- Prior art keywords
- cam
- camshaft
- piston
- timing gear
- driven timing
- 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 - Lifetime
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- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to a phase adjusting device for an air distributing cam of a motorcycle engine. The utility model is characterized in that a driven timing gear 5 is sheathed on the end with a minor diameter of an exhaust cam 9, and the exhaust cam 9 is movably sheathed with a cam shaft 19. The outer side of the exhaust cam 9 is provided with an admission cam 10, and the admission cam 10 is fixedly sheathed on the cam shaft 19 by a key 13. The utility model can accurately obtain an optimum air distributing phase position in real time, and thus, the utility model ensures that the work efficiency of an internal combustion engine is sufficiently displayed. Meanwhile, the utility model compensates the occurrence of a low valley when the engine is at high speed and improves the power of the engine when the engine is at high speed. In addition, the utility model has the advantages of compact structure, big load bearing capacity and low cost.
Description
One, technical field:
The utility model relates to a kind of motor phase modulation apparatus, relates in particular to a kind of motorcycle engine valve cam phase modulation apparatus that is used for cam side-mounted (CG type).
Two, background technique:
Be applied to the side-mounted cam valve train of CG type motorcycle engine now, adopt fixing port timing device, cause port timing non-adjustable, the ability of adaptation condition reduces, oil consumption is increased, especially when requiring high-speed power, obviously can not meet the demands, also be not suitable for environmental requirement, under this high speed high power operating mode, fixedly port timing mechanism with present widespread usage, can tangible power occur and reduce sharply, be i.e. the emergent power low ebb because charging efficiency is not high, can not climb very steep slopes when generally being exactly high speed, lifting capacity descends.
Though have variable cam valve train to come out at present, its port timing is adjustable, can satisfy the requirement under the high speed high power operating mode equally, and is not suitable for the existing structure of CG type motorcycle now, control law complexity, cost costliness.
Three, summary of the invention:
The purpose of this utility model provides and a kind ofly can change the intake cam port timing, improves the motorcycle engine valve cam phase modulation apparatus of charging efficiency.
Concrete scheme of the present utility model is: a kind of motorcycle engine valve cam phase modulation apparatus, comprise driven timing gear, exhaust cam, camshaft, it is characterized in that: A, driven timing gear are sleeved on the smaller diameter end of exhaust cam, the exhaust cam kink is on camshaft, the arranged outside of exhaust cam has intake cam, and intake cam is solidly set on the camshaft by key; B, be connected with the internal thread spline cover at the inwall of driven timing gear external part, the internal thread spline cover is engaged with the outer spiral spline piston that moves along the axially directed groove of camshaft, one side of outer spiral spline piston is connected with piston with holes by the anti-attrition pad, there is camshaft to stretch in the hole of piston, the axial end of camshaft is connected through spring with the interior hole end surface of piston, piston is positioned at hydraulic cylinder shell and spacing by the pin on the hydraulic cylinder shell, and the opposite side of outer spiral spline piston is connected with the exhaust cam interior edge face by spring.
This programme is installed with intake cam on camshaft, the outer spiral spline piston can move axially along camshaft, the outer spiral spline piston meshes the internal thread spline cover simultaneously, the internal thread spline cover is connected with driven timing gear, and an end of outer spiral spline piston is connected with piston, opposite side has spring, one end of spring stretches into the inner chamber of exhaust cam external part, when piston moves right, piston promotes the outer spiral spline piston and moves axially to the right, and the engagement that this moment, the outer spiral spline piston overlapped owing to internal thread spline, the internal thread spline cover is connected with the driven timing gear of high speed rotating, this moment, the outer spiral spline piston was also in radially rotation, at the outer spiral spline piston camshaft is radially rotated to an angle like this, cause the intake cam and the exhaust cam of solid cover on the camshaft to produce phase shifts, make intake cam to increasing the direction motion that the angle is closed in air inlet late, helping gasoline engine like this utilizes the inertia of high velocity air to continue inflation when high speed rotating, further improve charging efficiency, thereby improve the power of internal-combustion engine, when solenoid valve does not obtain switching signal, do not produce phase shifts, charging efficiency is constant.
Adopt the beneficial effect of such scheme to be: can obtain best port timing real-time and accurately, thereby the working efficiency that has guaranteed internal-combustion engine is not fully exerted, remedy motor simultaneously and low ebb when high speed, occurred, improved the power of motor when high speed, and compact structure, bearing capacity is big, cost is low.
Four, description of drawings:
Fig. 1 is a structural representation of the present utility model.
Five, embodiment:
As can be seen from Figure 1: the utility model is mainly by hydraulic cylinder shell 1, piston 2, pin 3, axle sleeve 4, driven timing gear 5, internal thread spline cover 6, pad 7, pin 8, exhaust cam 9, intake cam 10, pad 11, axle sleeve 12, key 13, casing 14, spring 15, clip 16, outer spiral spline piston 17, anti-attrition pad 18, camshaft 19, anti-attrition pad 20, spring 21 is formed, it is characterized in that: A, driven timing gear 5 are sleeved on the smaller diameter end of exhaust cam 9, exhaust cam 9 kinks are on camshaft 19, the arranged outside of exhaust cam 9 has intake cam 10, and intake cam 10 is solidly set on the camshaft 19 by key 13; B, inwall at driven timing gear 5 external parts is connected with internal thread spline cover 6, internal thread spline cover 6 is engaged with the outer spiral spline piston 17 that moves along camshaft 19 axially directed grooves, one side of outer spiral spline piston 17 is connected with piston with holes 2 by anti-attrition pad 18, there is camshaft 19 to stretch in the hole of piston 2, the axial end of camshaft 19 is connected through spring 21 with the interior hole end surface of piston 2, piston 2 is positioned at hydraulic cylinder shell 1 and spacing by the pin on the hydraulic cylinder shell 13, and the opposite side of outer spiral spline piston 17 is connected with exhaust cam 9 interior edge faces by spring 15.The active timing gear engagement of solid cover on driven timing gear 5 among the present invention and the former car bent axle, camshaft 19 be along with outer spiral spline piston 17 radially rotates, and the helix angle of outer spiral spline piston 17 is greater than from the locking angle.
As can be seen from Figure 1: there is opening the upper end of hydraulic cylinder shell 1.
From Fig. 1 also as can be known: the arranged outside of intake cam 10 has the axle sleeve 12 that is sleeved on the camshaft 19; Outer wall at driven timing gear 5 external parts is with axle sleeve 4.The effect of axle sleeve 4 and axle sleeve 12 is to reduce friction.
From Fig. 1 also as can be known: driven timing gear 5 and exhaust cam 9 are affixed by pin 8 and clip 16 respectively; Be provided with pad 7 between driven timing gear 5 and axle sleeve 4 sides, be provided with pad 11 between intake cam 10 and axle sleeve 12 sides.The effect of pad 7 and pad 11 is to reduce friction.
From Fig. 1 further as can be known: be outside equipped with casing 14 at driven timing gear 5, exhaust cam 9, intake cam 10, axle sleeve 12 and axle sleeve 4, a side of casing 14 is connected with hydraulic cylinder shell 1.Have opening on casing 14, the width D 1 of opening is greater than the distance D 2 of driven timing gear 5 left sides to exhaust cam 9 right sides.D1＞D2 is convenient to install driven timing gear 5 and exhaust cam 9 in casing 14.
From Fig. 1 also further as can be known: outer spiral spline piston 17 is axially directed splined with camshaft 19.
From Fig. 1 also further as can be known: camshaft 19 is connected with spring 21 through anti-attrition pad 20.
When the signal of engine crankshaft speed probe by amplifying, shaping is converted to the compare switching signal of gained of design speed, after solenoid valve obtains switching signal, the switch of solenoid valve in the switching signal control oil hydraulic circuit, pressure oil will enter by the opening of hydraulic cylinder shell 1 upper end in the oil hydraulic cylinder and to promote piston 2 and move right, when piston 2 moves right, piston 2 promotes outer spiral spline piston 17 and moves axially to the right, because outer spiral spline piston 17 engagement internal thread spline covers 6, internal thread spline cover 6 is connected with the driven timing gear 5 of high speed rotating, so this moment outer spiral spline piston 17 also critical path to rotation, at outer spiral spline piston 17 camshaft 19 is radially rotated to an angle like this, cause the intake cam 10 of solid cover on the camshaft 19 radially to rotate to an angle, be that relative exhaust cam 9 produces phase shifts, thereby change intake cam 10 port timings, improve charging efficiency, when solenoid valve does not obtain switching signal, do not produce phase shifts, charging efficiency is constant.
Claims (7)
1, a kind of motorcycle engine valve cam phase modulation apparatus, comprise driven timing gear (5), exhaust cam (9), camshaft (19), it is characterized in that: A, driven timing gear (5) are sleeved on the smaller diameter end of exhaust cam (9), exhaust cam (9) kink is on camshaft (19), the arranged outside of exhaust cam (9) has intake cam (10), and intake cam (10) is solidly set on the camshaft (19) by key (13); B, inwall at driven timing gear (5) external part is connected with internal thread spline cover (6), internal thread spline cover (6) is engaged with the outer spiral spline piston (17) that moves along the axially directed groove of camshaft (19), one side of outer spiral spline piston (17) is connected with piston with holes (2) by anti-attrition pad (18), there is camshaft (19) to stretch in the hole of piston (2), the axial end of camshaft (19) is connected through spring (21) with the interior hole end surface of piston (2), piston (2) is positioned at hydraulic cylinder shell (1) and spacing by the pin (3) on the hydraulic cylinder shell (1), and the opposite side of outer spiral spline piston (17) is connected with exhaust cam (9) interior edge face by spring (15).
2, motorcycle engine valve cam phase modulation apparatus according to claim 1, it is characterized in that: there is opening the upper end of hydraulic cylinder shell (1).
3, motorcycle engine valve cam phase modulation apparatus according to claim 1 is characterized in that: the arranged outside of intake cam (10) has the axle sleeve (12) that is sleeved on the camshaft (19); Outer wall at driven timing gear (5) external part is with axle sleeve (4).
4, motorcycle engine valve cam phase modulation apparatus according to claim 1 is characterized in that: driven timing gear (5) and exhaust cam (9) are fixing by pin (8) and clip (16) respectively; Be provided with pad (7) between driven timing gear (5) and axle sleeve (4) side, be provided with pad (11) between intake cam (10) and axle sleeve (12) side.
5, motorcycle engine valve cam phase modulation apparatus according to claim 1, it is characterized in that: be outside equipped with casing (14) at driven timing gear (5), exhaust cam (9), intake cam (10), axle sleeve (12) and axle sleeve (4), one side of casing (14) is connected with hydraulic cylinder shell (1), have opening on casing (14), the width D 1 of opening is greater than the distance D 2 of driven timing gear (5) left side to exhaust cam (9) right side.
6, motorcycle engine valve cam phase modulation apparatus according to claim 1 is characterized in that: outer spiral spline piston (17) is axially directed splined with camshaft (19).
7, motorcycle engine valve cam phase modulation apparatus according to claim 1 is characterized in that: camshaft (19) is connected with spring (21) through anti-attrition pad (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033323 CN2685577Y (en) | 2004-03-17 | 2004-03-17 | Motorcycle engine distribution cam phase modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033323 CN2685577Y (en) | 2004-03-17 | 2004-03-17 | Motorcycle engine distribution cam phase modifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2685577Y true CN2685577Y (en) | 2005-03-16 |
Family
ID=34670711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420033323 Expired - Lifetime CN2685577Y (en) | 2004-03-17 | 2004-03-17 | Motorcycle engine distribution cam phase modifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2685577Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510324C (en) * | 2004-03-17 | 2009-07-08 | 力帆实业(集团)股份有限公司 | Phasing device for distributing cam of motorcycle engine |
| CN105863767A (en) * | 2016-03-24 | 2016-08-17 | 中国北方发动机研究所(天津) | Timing mechanism capable of flexibly adjusting gas distributing phases |
| CN107035455A (en) * | 2017-06-02 | 2017-08-11 | 宁波中策动力有限公司 | A kind of adjustable hydraulic gear spindle drive mechanism |
-
2004
- 2004-03-17 CN CN 200420033323 patent/CN2685577Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510324C (en) * | 2004-03-17 | 2009-07-08 | 力帆实业(集团)股份有限公司 | Phasing device for distributing cam of motorcycle engine |
| CN105863767A (en) * | 2016-03-24 | 2016-08-17 | 中国北方发动机研究所(天津) | Timing mechanism capable of flexibly adjusting gas distributing phases |
| CN107035455A (en) * | 2017-06-02 | 2017-08-11 | 宁波中策动力有限公司 | A kind of adjustable hydraulic gear spindle drive mechanism |
| CN107035455B (en) * | 2017-06-02 | 2022-10-25 | 宁波中策动力有限公司 | Adjustable hydraulic gear shaft transmission mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090708 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |