CN100464058C - Air gate on-off control device of overhead cam axle engine - Google Patents
Air gate on-off control device of overhead cam axle engine Download PDFInfo
- Publication number
- CN100464058C CN100464058C CNB2007100208870A CN200710020887A CN100464058C CN 100464058 C CN100464058 C CN 100464058C CN B2007100208870 A CNB2007100208870 A CN B2007100208870A CN 200710020887 A CN200710020887 A CN 200710020887A CN 100464058 C CN100464058 C CN 100464058C
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- exhaust
- intake
- rocker
- valve
- rocker arm
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- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a control device of valve switches in engine with overhead camshaft. It contains cowl head with a dead axle driven by crankshaft through driven wheel. Admission and exhaust cams are fixed on the driven wheel. Admission and exhaust rocker arms are pin jointed in the cowl head. The admission cam controls the intake valve switch through the admission rocker arm. . The exhaust cam controls the blast valve switch through the exhaust rocker arm. Valve springs are set between the admission and exhaust rocker arms and the cowl head, which always jacks the admission and exhaust rocker arms along the direction of closing the valve. The invention arranges two cams on the driven wheel to control switches of intake and blast valves, which simplifies the structure of rocker arms and guarantees their reliability.
Description
Technical field
The present invention relates to a kind of valve switch control gear of overhead camshaft engine.
Background technique
Existing OHC overhead camshaft h type engine h generally adopts single cam control valve, this in-engine follower is to be driven by the driving wheel on the engine crankshaft, when follower rotated, the follower overhead cam drove rocking arm and rotates, thus the switch of control intake valve and exhaust valve.Because the rocking arm in this motor need be controlled the switch of intake valve and exhaust valve simultaneously, so its rocking arm shape is very complicated, brings difficulty to the manufacturing, and can not guarantee the reliability of rocking arm.
Summary of the invention
The objective of the invention is: the valve switch control gear that a kind of overhead camshaft engine is provided, this device has been arranged two cams on follower, two cams are controlled intake valve switch and exhaust valve switch respectively, have simplified the structure of rocking arm, have guaranteed the reliability of rocking arm.
Technological scheme of the present invention is: a kind of valve switch control gear of overhead camshaft engine, comprise cylinder head, cylinder head is provided with the follower shaft that is driven by follower by bent axle, be fixed with intake cam and exhaust cam on the described follower shaft, cylinder head is connected with intake rocker and exhaust rocker arm, intake cam can be controlled the intake valve switch by promoting intake rocker, exhaust cam can be controlled the exhaust valve switch by promoting exhaust rocker arm, intake rocker, be respectively equipped with valve spring between exhaust rocker arm and the cylinder head, valve spring is all the time along closing valve direction roof pressure intake rocker and exhaust rocker arm; Described intake rocker and exhaust rocker arm all take the shape of the letter U and are provided with in opposite directions, one termination of intake rocker contacts with intake cam, another termination of intake rocker contacts with the intake valve bar, and a termination of exhaust rocker arm contacts with exhaust cam, and another termination of exhaust rocker arm contacts with exhaust valve rod; The coaxial setting of described intake rocker and exhaust rocker arm, and pitman arm shaft is perpendicular to the follower shaft setting.
The further technological scheme of the present invention is: a kind of valve switch control gear of overhead camshaft engine, comprise cylinder head, cylinder head is provided with the follower shaft that is driven by follower by bent axle, be fixed with intake cam and exhaust cam on the described follower shaft, cylinder head is connected with intake rocker and exhaust rocker arm, intake cam can be controlled the intake valve switch by promoting intake rocker, exhaust cam can be controlled the exhaust valve switch by promoting exhaust rocker arm, intake rocker, be respectively equipped with valve spring between exhaust rocker arm and the cylinder head, valve spring is all the time along closing valve direction roof pressure intake rocker and exhaust rocker arm; Described intake rocker and exhaust rocker arm all take the shape of the letter U and are provided with in opposite directions, one termination of intake rocker contacts with intake cam, another termination of intake rocker contacts with the intake valve bar, and a termination of exhaust rocker arm contacts with exhaust cam, and another termination of exhaust rocker arm contacts with exhaust valve rod; The coaxial setting of described intake rocker and exhaust rocker arm, and pitman arm shaft is perpendicular to the follower shaft setting; Described intake rocker directly contacts with the end face of intake valve bar by adjusting screw, and exhaust rocker arm directly contacts with the end face of exhaust valve rod by adjusting screw; Contacting between described intake rocker and the intake cam is the line contact, and Line of contact be arranged in parallel with follower shaft, and contacting between exhaust rocker arm and the exhaust cam is that line contacts, and Line of contact and follower shaft be arranged in parallel.
Advantage of the present invention is:
1. the present invention has arranged two cams on follower, and two cams are controlled intake valve switch and exhaust valve switch respectively, has simplified the structure of rocking arm, has guaranteed the reliability of rocking arm.
2. contacting between intake rocker of the present invention and the intake cam is the line contact, and Line of contact and follower shaft be arranged in parallel, contacting between exhaust rocker arm and the exhaust cam is the line contact, and Line of contact and follower shaft be arranged in parallel, guaranteed that intake rocker and exhaust rocker arm can be not stuck.
3. intake rocker of the present invention and the coaxial setting of exhaust rocker arm, and pitman arm shaft is perpendicular to the follower shaft setting, so intake rocker and exhaust rocker arm rotate around same pitman arm shaft, so just reduced volume.
Below in conjunction with drawings and Examples the present invention is further described:
Description of drawings
Fig. 1 is a stereogram of the present invention;
Fig. 2 is a plan view of the present invention;
Fig. 3 is a kinematic sketch of the present invention; (omission intake rocker)
Fig. 4 is the structural representation of follower among the present invention;
Fig. 5 is orientation diagram between intake rocker among the present invention and the exhaust rocker arm.
Wherein: 1 cylinder head; 2 followers; 3 intake cams; 4 exhaust cams; 5 intake rockers; 6 exhaust rocker arms; 7 valve spring; 8 pitman arm shafts; 9 follower shafts; 10 adjusting screw; 11 intake valve bars; 12 adjusting screw; 13 exhaust valve rods.
Embodiment
Embodiment: extremely shown in Figure 5 as Fig. 1, a kind of valve switch control gear of overhead camshaft engine, comprise cylinder head 1, cylinder head 1 is provided with the follower shaft 9 that is driven by follower 2 by bent axle, be fixed with intake cam 3 and exhaust cam 4 on the described follower shaft 9, follower 2, intake cam 3 and exhaust cam 4 one are fixed, coaxial pins is connected to intake rocker 5 and exhaust rocker arm 6 in the cylinder head 1; pitman arm shaft 8 is provided with perpendicular to follower shaft 9; intake rocker 5 and exhaust rocker arm 6 all take the shape of the letter U and be provided with in opposite directions; a termination of intake rocker 5 contacts with intake cam 3; another termination of intake rocker 5 directly contacts with the end face of intake valve bar 11 by adjusting screw 10; termination of exhaust rocker arm 6 contacts with exhaust cam 4, and another termination of exhaust rocker arm 6 directly contacts with the end face of exhaust valve rod 13 by adjusting screw 12; Intake cam 3 can be controlled the intake valve switch by promoting intake rocker 5, exhaust cam 4 can be controlled the exhaust valve switch by promoting exhaust rocker arm 6, be respectively equipped with valve spring 7 between intake rocker 5, exhaust rocker arm 6 and the cylinder head 1, valve spring 7 is all the time along closing valve direction roof pressure intake rocker 5 and exhaust rocker arm 6.
Contacting between intake rocker 5 and the intake cam 3 is the line contact, and Line of contact be arranged in parallel with follower shaft 9, and contacting between exhaust rocker arm 6 and the exhaust cam 4 is that line contacts, and Line of contact and follower shaft 9 be arranged in parallel.
Working principle of the present invention: follower 2 is driven by chain by the driving wheel on the engine crankshaft, when follower 2 rotates, intake cam 3 makes intake rocker 5 rotate around pitman arm shaft 8 for the thrust of air inlet Rocker arm 5, intake rocker 5 rotates 10 rotations of drive adjusting screw and makes IO Intake Valve Opens, when intake cam 3 turns over peak, because valve spring 7 elastic force are closed intake valve automatically, thereby reach the purpose of intake valve switch; In like manner, the switch of exhaust valve also is so to be controlled by exhaust cam 4 and exhaust rocker arm 6.
Below only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the present invention's scope required for protection.
Claims (3)
1. the valve switch control gear of an overhead camshaft engine, comprise cylinder head (1), cylinder head (1) is provided with the follower shaft (9) that is driven by follower (2) by bent axle, it is characterized in that: be fixed with intake cam (3) and exhaust cam (4) on the described follower shaft (9), cylinder head (1) is connected with intake rocker (5) and exhaust rocker arm (6), intake cam (3) can be controlled the intake valve switch by promoting intake rocker (5), exhaust cam (4) can be controlled the exhaust valve switch by promoting exhaust rocker arm (6), intake rocker (5), be respectively equipped with valve spring (7) between exhaust rocker arm (6) and the cylinder head (1), valve spring (7) is all the time along closing valve direction roof pressure intake rocker (5) and exhaust rocker arm (6); Described intake rocker (5) and exhaust rocker arm (6) all take the shape of the letter U and are provided with in opposite directions, one termination of intake rocker (5) contacts with intake cam (3), another termination of intake rocker (5) contacts with intake valve bar (11), one termination of exhaust rocker arm (6) contacts with exhaust cam (4), and another termination of exhaust rocker arm (6) contacts with exhaust valve rod (13); Described intake rocker (5) and exhaust rocker arm (6) pass the coaxial setting of pitman arm shaft (8), can rotate around pitman arm shaft (8), and pitman arm shaft (8) are provided with perpendicular to follower shaft (9).
2. according to the valve switch control gear of the described overhead camshaft engine of claim 1, it is characterized in that: described intake rocker (5) directly contacts with the end face of intake valve bar (11) by adjusting screw (10), and exhaust rocker arm (6) directly contacts with the end face of exhaust valve rod (13) by adjusting screw (12).
3. according to the valve switch control gear of the described overhead camshaft engine of claim 1, it is characterized in that: contacting between described intake rocker (5) and the intake cam (3) is the line contact, and Line of contact and follower shaft (9) be arranged in parallel, contacting between exhaust rocker arm (6) and the exhaust cam (4) is the line contact, and Line of contact and follower shaft (9) be arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100208870A CN100464058C (en) | 2007-04-11 | 2007-04-11 | Air gate on-off control device of overhead cam axle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100208870A CN100464058C (en) | 2007-04-11 | 2007-04-11 | Air gate on-off control device of overhead cam axle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101033695A CN101033695A (en) | 2007-09-12 |
| CN100464058C true CN100464058C (en) | 2009-02-25 |
Family
ID=38730416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100208870A Expired - Fee Related CN100464058C (en) | 2007-04-11 | 2007-04-11 | Air gate on-off control device of overhead cam axle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100464058C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233779B (en) * | 2013-05-08 | 2015-05-20 | 祥天控股（集团）有限公司 | Air intake and exhaust structure of rotary type engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763022A (en) * | 1993-08-25 | 1995-03-07 | Akira Sakamoto | Intake/exhaust valve opening/closing structure |
| CN2272487Y (en) * | 1994-07-08 | 1998-01-14 | 财团法人工业技术研究院 | Valve swing arm mechanism for four-stroke engine |
| CN2584834Y (en) * | 2001-09-21 | 2003-11-05 | 本田技研工业株式会社 | Valve operating device for engine |
| CN2821168Y (en) * | 2005-07-09 | 2006-09-27 | 熊自安 | Chain driving double cam pushing rod distribution structure of single cylinder four stroke gasoline machine |
| CN2837518Y (en) * | 2005-10-31 | 2006-11-15 | 江门天钇金属工业有限公司 | Motorcycle engine cam valve train |
| CN201025081Y (en) * | 2007-04-11 | 2008-02-20 | 苏州市吴中区双马机电有限公司 | Valve switch control device for top set camshaft engine |
-
2007
- 2007-04-11 CN CNB2007100208870A patent/CN100464058C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763022A (en) * | 1993-08-25 | 1995-03-07 | Akira Sakamoto | Intake/exhaust valve opening/closing structure |
| CN2272487Y (en) * | 1994-07-08 | 1998-01-14 | 财团法人工业技术研究院 | Valve swing arm mechanism for four-stroke engine |
| CN2584834Y (en) * | 2001-09-21 | 2003-11-05 | 本田技研工业株式会社 | Valve operating device for engine |
| CN2821168Y (en) * | 2005-07-09 | 2006-09-27 | 熊自安 | Chain driving double cam pushing rod distribution structure of single cylinder four stroke gasoline machine |
| CN2837518Y (en) * | 2005-10-31 | 2006-11-15 | 江门天钇金属工业有限公司 | Motorcycle engine cam valve train |
| CN201025081Y (en) * | 2007-04-11 | 2008-02-20 | 苏州市吴中区双马机电有限公司 | Valve switch control device for top set camshaft engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101033695A (en) | 2007-09-12 |
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Owner name: SUZHOU CITY WUZHONG DISTRICT SHUANGMA ELECTRICAL Free format text: FORMER OWNER: MA YUNFENG Effective date: 20080104 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20080104 Address after: Golden Bridge Industrial Park, Wuzhong District Mudu town of Suzhou city in Jiangsu province water drain No. 85 post encoding: 215101 Applicant after: Suzhou Erma Mechanical And Electrical Co., Ltd. Address before: Golden Bridge Industrial Park, Wuzhong District Mudu town of Suzhou city in Jiangsu province Ji water Shuangma electromechanical Co Ltd postal encoding: 215101 Applicant before: Ma Yunfeng |
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