CN104675466A - Composite camshaft capable of realizing secondary opening of valve - Google Patents
Composite camshaft capable of realizing secondary opening of valve Download PDFInfo
- Publication number
- CN104675466A CN104675466A CN201510086387.1A CN201510086387A CN104675466A CN 104675466 A CN104675466 A CN 104675466A CN 201510086387 A CN201510086387 A CN 201510086387A CN 104675466 A CN104675466 A CN 104675466A
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- China
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- slide block
- oil duct
- camshaft
- cam
- main cam
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Abstract
The invention relates to a composite camshaft capable of realizing the secondary opening of a valve, which belongs to the technical field of engines. According to the composite camshaft, a main cam is fixedly connected to the left end of the camshaft through a center hole I, a two-position three-way solenoid valve and a sensor are fixedly connected to the right end of the camshaft, a secondary cam, a belleville spring and an end bearing sleeve a boss of the main cam in sequence and are movably connected with the main cam, and the right end of the end bearing is limited by a snap ring which is clamped into a groove of the main cam. According to the composite camshaft, the secondary opening and closing angle of the valve can be changed as required by utilizing the process that the secondary cam swings back and forth in a sliding block running track of the main cam, the composite camshaft is suitable for the secondary opening adjustment of an inlet valve and an exhaust valve simultaneously and can be installed on a multicylinder engine, and the design of the camshaft conforms to the requirement of light weight of the engine.
Description
Technical field
The invention belongs to technical field of engines, be specifically related to a kind of composite camshaft realizing secondary opening of air valve.
Background technique
In most of existing motor, each cam on camshaft, to there being a convex top, makes the cam axle valve opening and closing that after a week, cam is corresponding each once.
Valve opening angle immobilizes, and makes versatility poor, because regulating, therefore can not meet the needs of alternate-engine.
Summary of the invention
The object of the present invention is to provide a kind of composite camshaft realizing secondary opening of air valve.
The present invention is made up of main cam 1, slider I 2, secondary cam 3, butterfly spring 4, end face bearing 5, snap ring 6, camshaft 7, two-bit triplet solenoid valve 8, sensor 9, control unit 10, motor 11, slide block II 12, spring II 13, bearing pin I 14, pin shaft II 17, pin shaft III 20, bearing pin IV 23, spring I 27, spring III 28 and spring IV 29, wherein main cam 1 is fixed in camshaft 7 left end through center hole I 25, and two-bit triplet solenoid valve 8 and sensor 9 are fixed in camshaft 7 right-hand member.
Secondary cam 3, butterfly spring 4 and end face bearing 5 order is placed on the boss 15 of main cam 1, and is flexibly connected with main cam 1, and wherein end face bearing 5 right-hand member is spacing by snap ring 6, and snap ring 6 is stuck in the groove 32 of main cam 1.
Slider I 2 is embedded in the slide block slot I 37 of time cam 3, and slide block II 12 is embedded in the slide block slot II 35 of time cam 3.
Spring III 28 one end is fixed in slider I 2 left part side, and spring III 28 the other end is fixed in the pin shaft III 20 of slide block orbit I 22 in main cam 1.
Spring IV 29 one end is fixed in slider I 2 left part opposite side, and spring IV 29 the other end is fixed in the bearing pin IV 23 of slide block orbit I 22 in main cam 1.
Spring II 13 one end is fixed in slide block II 12 left part side, and spring II 13 the other end is fixed in the pin shaft II 17 of slide block orbit II 16 in main cam 1.
Spring I 27 one end is fixed in slide block II 12 left part opposite side, and spring I 27 the other end is fixed in the bearing pin I 14 of slide block orbit II 16 in main cam 1.
An outlet of two-bit triplet solenoid valve 8 communicates with the oil duct I 31 of camshaft 7, and another outlet of two-bit triplet solenoid valve 8 communicates with the oil duct II 30 of camshaft 7, and the import of two-bit triplet solenoid valve 8 is connected with the machine oil mouth of motor 11.
Two-bit triplet solenoid valve 8 and sensor 9 control by control unit 10, control unit 10 according to the change of motor 11 Operational Limits, to two-bit triplet solenoid valve 8 coil power on/off, to realize the change to direction of engine oil flow.
In camshaft 7, the bypass oil duct IV 34 of oil duct II 30 communicates with the oilhole II 18 of main cam 1; In camshaft 7, the bypass oil duct III 33 of oil duct II 30 communicates with the oilhole IV 24 of main cam 1; In camshaft 7, the bypass oil duct I 38 of oil duct I 31 communicates with the oilhole I 26 of main cam 1; In camshaft 7, the bypass oil duct II 39 of oil duct I 31 communicates with the oilhole III 19 of main cam 1.
Described main cam 1 is provided with center hole I 25, and main cam 1 one end is cam 21, and main cam 1 the other end is boss 15, and the outer end face of boss 15 is provided with groove 32, is provided with slide block orbit I 22 and slide block orbit II 16 inside cam 21; Slide block orbit I 22 one end is sequentially with oilhole III 19 and pin shaft III 20, and slide block orbit I 22 the other end is sequentially with oilhole IV 24 and bearing pin IV 23; Slide block orbit II 16 one end is sequentially with oilhole II 18 and pin shaft II 17, and slide block orbit II 16 the other end is sequentially with oilhole I 26 and bearing pin I 14.
Described secondary cam 3 is provided with center hole II 36, and the center hole about II 36 of secondary cam 3 is arranged with slide block slot I 37 and slide block slot II 35.
In described camshaft 7, the upper and lower both sides of longitudinal axis are provided with the oil duct II 30 and oil duct I 31 that run through, are provided with the bypass oil duct I 38 and bypass oil duct II 39 that are opened on both sides in the middle part of oil duct I 31; The bypass oil duct III 33 and bypass oil duct IV 34 that are opened on both sides is provided with in the middle part of oil duct II 30.
The invention has the advantages that and utilize time cam to swing back and forth in the slide block orbit of main cam, the angle of secondary opening of air valve and closedown can be changed as required.
The present invention can be applicable to the adjustment of the secondary opening of intake valve and exhaust valve simultaneously, and can be installed on multicylinder engine.
Under guarantee torsional strenght and reliability can meet the prerequisite of real engine service condition, the overall weight of camshaft of the present invention decreases relative to solid shaft, meets the light-weighted requirement of alternate-engine.
Accompanying drawing explanation
Fig. 1 is the structural representation of composite camshaft
Fig. 2 is the plan view of main cam
Fig. 3 is main cam inner spring layout plan
Fig. 4 is the sectional view of Fig. 3 along B-B direction
Fig. 5 is the sectional view of Fig. 3 along D-D direction
Fig. 6 is part assembly drawing (this figure Main Function embodies, and when device does not work, secondary cam is relative to main cam deviation angle)
Fig. 7 is the sectional view of Fig. 6 along B-B direction
Fig. 8 is the plan view of time cam
Fig. 9 is the sectional view of Fig. 8 along B-B direction
Figure 10 is the sectional view of Figure 11 along D-D direction
Figure 11 is the schematic diagram cuing open oil duct II
Figure 12 is the sectional view of Figure 13 along C-C direction
Figure 13 is the schematic diagram cuing open oil duct I
Figure 14 is device working drawing after oil duct II, fuel feeding
Figure 15 is device working drawing after oil duct I fuel feeding
Wherein: 1. main cam 2. slider I 3. cam 4. butterfly spring 5. end face bearing 6. snap ring 7. camshaft 8. two-bit triplet solenoid valve 9. sensor 10. control unit 11. motor 12. slide block II 13. spring II 14. bearing pin I 15. boss 16. slide block orbit II 17. pin shaft II 18. oilhole II 19. oilhole III 20. pin shaft III 21. cam 22. slide block orbit I 23. bearing pin IV 24. oilhole IV 25. center hole I 26. oilhole I 27. spring I 28. spring III 29. spring IV 30. oil duct II 31. oil duct I 32. groove 33. bypass oil duct III 34. bypass oil duct IV 35. slide block slot II 36. center hole II 37. slide block slot I 38. bypass oil duct I 39. bypass oil ducts II
Embodiment
The present invention is made up of main cam 1, slider I 2, secondary cam 3, butterfly spring 4, end face bearing 5, snap ring 6, camshaft 7, two-bit triplet solenoid valve 8, sensor 9, control unit 10, motor 11, slide block II 12, spring II 13, bearing pin I 14, pin shaft II 17, pin shaft III 20, bearing pin IV 23, spring I 27, spring III 28 and spring IV 29.
As shown in Figure 6, when composite camshaft does not work, secondary cam 3 is main cam 1 one angles relatively; Secondary cam 3 respectively in the slide block orbit I 22 of main cam 1 and slidably reciprocating of slide block orbit II 16 by slider I 2 and slide block II 12, to be strengthened relative to main cam to realize time cam or to reduce angle;
As shown in Figure 3, slider I 2 realizes by the spring III 28 at two ends, spring IV 29, pin shaft III 20 and bearing pin IV 23 buffering that resets;
As shown in Figure 3, slide block II 12 realizes by the spring II 13 at two ends, spring I 27, bearing pin I 14 and pin shaft II 17 buffering that resets;
As shown in Figure 7, the design of butterfly spring 4, end face bearing 5 and snap ring 6 had not only ensured relative to main cam 1, time cam 3 can rotate but also ensure that secondary cam 3 there will not be break-off relative to main cam 1;
Motor 11 is to two-bit triplet solenoid valve 8 fuel feeding, oil duct I 31 on camshaft 7 and oil duct II 30 replace as oil input channel and back oil road by two-bit triplet solenoid valve 8 as required, as shown in Figure 12, oil duct I 31 communicates with oilhole I 26 and oilhole III 19 respectively by bypass oil duct I 38 and bypass oil duct II 39; As shown in accompanying drawing 5 and accompanying drawing 10, oil duct II 30 communicates with oilhole IV 24 and oilhole II 18 respectively by bypass oil duct III 33 and bypass oil duct IV 34;
Control unit 10 detects the change of motor 11 Operational Limits, to the coil power on/off of two-bit triplet solenoid valve 8, to realize the change to direction of engine oil flow;
Working procedure of the present invention is: motor 11 provides machine oil to two-bit triplet solenoid valve 8, if desired the angle of valve opening is strengthened, namely time cam 3 have rotated several angle at the clockwise under influence of slider I 2 and slide block II 12, as shown in Figure 15, then machine oil is controlled to enter oil duct I 31 by two-bit triplet solenoid valve 8, then enter slide block orbit II 16 and slide block orbit I 22 respectively by oilhole I 26 and oilhole III 19, the machine oil that oilhole I 26 flows out promotes to flow into oil duct II 30 from oilhole II 18 after slide block II 12 moves, the slider I 2 that promotes the machine oil that oilhole III 19 flows out flows into oil duct II 30 from oilhole IV 24 after moving, machine oil flows back to two-bit triplet solenoid valve 8 through oil duct II 30, if desired the angle of valve opening is reduced, namely time cam 3 have rotated several angle counterclockwise under the effect of slider I 2 and slide block II 12, as shown in Figure 14, then machine oil is controlled to enter oil duct II 30 by two-bit triplet solenoid valve 8, then enter slide block orbit II 16 and slide block orbit I 22 respectively by oilhole II 18 and oilhole IV 24, the machine oil that oilhole II 18 flows out promotes to flow into oil duct I 31 from oilhole I 26 after slide block II 12 moves, the slider I 2 that promotes the machine oil that oilhole IV 24 flows out flows into oil duct I 31 from oilhole III 19 after moving, machine oil flows back to two-bit triplet solenoid valve 8 through oil duct I 31, wherein, slider I 2 realizes by the spring III 28 at two ends, spring IV 29, pin shaft III 20 and bearing pin IV 23 buffering that resets, and slide block II 12 realizes by the spring II 13 at two ends, spring I 27, bearing pin I 14 and pin shaft II 17 buffering that resets.
The present invention can be applicable to the adjustment of the secondary opening of intake valve and exhaust valve simultaneously, and can be installed on multicylinder engine.
Under guarantee torsional strenght and reliability can meet the prerequisite of real engine service condition, the oil duct I 31 of described camshaft 7 and oil duct II 30 make the total quality of camshaft 7 decrease relative to solid shaft, meet the light-weighted requirement of alternate-engine.
Claims (4)
1. one kind can realize the composite camshaft of secondary opening of air valve, it is characterized in that by main cam (1), slider I (2), secondary cam (3), butterfly spring (4), end face bearing (5), snap ring (6), camshaft (7), two-bit triplet solenoid valve (8), sensor (9), control unit (10), motor (11), slide block II (12), spring II (13), bearing pin I (14), pin shaft II (17), pin shaft III (20), bearing pin IV (23), spring I (27), spring III (28) and spring IV (29) form, wherein main cam (1) is fixed in camshaft (7) left end through center hole I (25), two-bit triplet solenoid valve (8) and sensor (9) are fixed in camshaft (7) right-hand member, secondary cam (3), butterfly spring (4) and end face bearing (5) order is placed on the boss (15) of main cam (1), and be flexibly connected with main cam (1), wherein end face bearing (5) right-hand member is spacing by snap ring (6), and snap ring (6) is stuck in the groove (32) of main cam (1), slider I (2) is embedded in the slide block slot I (37) of time cam (3), and slide block II (12) is embedded in the slide block slot II (35) of time cam (3), spring III (28) one end is fixed in slider I (2) left part side, and spring III (28) the other end is fixed in the pin shaft III (20) of slide block orbit I (22) in main cam (1), spring IV (29) one end is fixed in slider I (2) left part opposite side, and spring IV (29) the other end is fixed in the bearing pin IV (23) of slide block orbit I (22) in main cam (1), spring II (13) one end is fixed in slide block II (12) left part side, and spring II (13) the other end is fixed in the pin shaft II (17) of slide block orbit II (16) in main cam (1), spring I (27) one end is fixed in slide block II (12) left part opposite side, and spring I (27) the other end is fixed in the bearing pin I (14) of slide block orbit II (16) in main cam (1), an outlet of two-bit triplet solenoid valve (8) communicates with the oil duct I (31) of camshaft (7), another outlet of two-bit triplet solenoid valve (8) communicates with the oil duct II (30) of camshaft (7), and the import of two-bit triplet solenoid valve (8) is connected with the machine oil mouth of motor (11), two-bit triplet solenoid valve (8) and sensor (9) control by control unit (10), in camshaft (7), the bypass oil duct IV (34) of oil duct II (30) communicates with the oilhole II (18) of main cam (1), in camshaft (7), the bypass oil duct III (33) of oil duct II (30) communicates with the oilhole IV (24) of main cam (1), in camshaft (7), the bypass oil duct I (38) of oil duct I (31) communicates with the oilhole I (26) of main cam (1), in camshaft (7), the bypass oil duct II (39) of oil duct I (31) communicates with the oilhole III (19) of main cam (1).
2. by the composite camshaft realizing secondary opening of air valve according to claim 1, it is characterized in that described main cam (1) is provided with center hole I (25), main cam (1) one end is cam (21), main cam (1) the other end is boss (15), the outer end face of boss (15) is provided with groove (32), cam (21) inner side is provided with slide block orbit II (16) and slide block orbit I (22), slide block orbit II (16) one end is sequentially with oilhole II (18) and pin shaft II (17), slide block orbit II (16) the other end is sequentially with oilhole I (26) and bearing pin I (14), slide block orbit I (22) one end is sequentially with oilhole III (19) and pin shaft III (20), and slide block orbit I (22) the other end is sequentially with oilhole IV (24) and bearing pin IV (23).
3. by the composite camshaft realizing secondary opening of air valve according to claim 1, it is characterized in that described secondary cam (3) is provided with center hole II (36), the center hole II (36) of secondary cam (3) is arranged with slide block slot I (37) and slide block slot II (35) up and down.
4. by the composite camshaft realizing secondary opening of air valve according to claim 1, it is characterized in that the described upper and lower both sides of camshaft (7) interior longitudinal axis are provided with the oil duct II (30) and oil duct I (31) run through, oil duct I (31) middle part is provided with the bypass oil duct I (38) and bypass oil duct II (39) that are opened on both sides; Oil duct II (30) middle part is provided with the bypass oil duct III (33) and bypass oil duct IV (34) that are opened on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086387.1A CN104675466B (en) | 2015-02-17 | 2015-02-17 | The composite camshaft of achievable secondary opening of air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086387.1A CN104675466B (en) | 2015-02-17 | 2015-02-17 | The composite camshaft of achievable secondary opening of air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104675466A true CN104675466A (en) | 2015-06-03 |
| CN104675466B CN104675466B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510086387.1A Expired - Fee Related CN104675466B (en) | 2015-02-17 | 2015-02-17 | The composite camshaft of achievable secondary opening of air valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN104675466B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04330309A (en) * | 1991-04-26 | 1992-11-18 | Mitsubishi Motors Corp | Valve system for internal combustion engine |
| US20090025666A1 (en) * | 2005-05-11 | 2009-01-29 | Toyota Jidosha Kabushiki Kaisha | Variable valve-operating device |
| CN101614142A (en) * | 2009-08-06 | 2009-12-30 | 天津内燃机研究所 | A kind of device of in internal-combustion engine, controlling the valve secondary opening |
| CN203394604U (en) * | 2013-07-12 | 2014-01-15 | 昆明云内动力股份有限公司 | Cam shaft of engine |
| CN204457901U (en) * | 2015-02-17 | 2015-07-08 | 吉林大学 | The composite camshaft of secondary opening of air valve can be realized |
-
2015
- 2015-02-17 CN CN201510086387.1A patent/CN104675466B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04330309A (en) * | 1991-04-26 | 1992-11-18 | Mitsubishi Motors Corp | Valve system for internal combustion engine |
| US20090025666A1 (en) * | 2005-05-11 | 2009-01-29 | Toyota Jidosha Kabushiki Kaisha | Variable valve-operating device |
| CN101614142A (en) * | 2009-08-06 | 2009-12-30 | 天津内燃机研究所 | A kind of device of in internal-combustion engine, controlling the valve secondary opening |
| CN203394604U (en) * | 2013-07-12 | 2014-01-15 | 昆明云内动力股份有限公司 | Cam shaft of engine |
| CN204457901U (en) * | 2015-02-17 | 2015-07-08 | 吉林大学 | The composite camshaft of secondary opening of air valve can be realized |
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| Publication number | Publication date |
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| CN104675466B (en) | 2017-03-01 |
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Granted publication date: 20170301 Termination date: 20180217 |
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