CN208749418U - A kind of middle camshaft of three-cylinder engine - Google Patents
A kind of middle camshaft of three-cylinder engine Download PDFInfo
- Publication number
- CN208749418U CN208749418U CN201821457941.8U CN201821457941U CN208749418U CN 208749418 U CN208749418 U CN 208749418U CN 201821457941 U CN201821457941 U CN 201821457941U CN 208749418 U CN208749418 U CN 208749418U
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- CN
- China
- Prior art keywords
- cylinder
- support axle
- axle journal
- main body
- camshaft
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- 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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Abstract
The utility model discloses a kind of middle camshafts of three-cylinder engine, it include the main body of cylindrical barred body, No.1 support axle journal, a cylinder admission cam, two cylinder admission cam, No. two support axle journals, three cylinder admission cams and No. three support axle journals are successively arranged in the main body, the No.1 support axle journal is greater than No. two support axle journals and No. three support axle journals in the length of main body axial direction.The support construction of the specific position formed by using No.1 support axle journal, No. two support axle journals and No. three support axle journals improves the stability of camshaft, it solves the problems, such as that the middle camshaft stability of three-cylinder engine is poor, provides a kind of middle camshaft suitable for three-cylinder engine.
Description
Technical field
The utility model relates to a kind of camshaft more particularly to a kind of middle camshafts of three-cylinder engine.
Background technique
Camshaft is a component in engine, its effect is to control the unlatching and closure function of valve.Camshaft
Main body be a cylindrical barred body, be arranged with several above for driving the cam of valve.Current existing camshaft master
If overhead camshaft.Three cylinder diesel engines have it is compact-sized, arrangement has a wide range of application, the lower feature of oil consumption,
Have in various types of vehicles and machinery and is widely applied very much.Due to the feature that diesel engine speed is low, torque is big, middle can be used
Camshaft, relative to having used the engine structure of the most common overhead camshaft to further decrease engine height gauge
Very little, engine structure can be more compact, to give full play to the compact-sized advantage of three-cylinder engine.But lack at present
Suitable for the middle camshaft of three-cylinder engine, the problem of being primarily present is that the middle camshaft operating of three-cylinder engine is steady
It is qualitative poor.
Utility model content
In order to solve the above technical problems, passing through the utility model proposes a kind of camshaft of three-cylinder engine middle
Solve the problems, such as that camshaft run stability is poor using the support construction of specific position.
In order to achieve the above object, the technical solution of the utility model is as follows: a kind of middle cam of three-cylinder engine
Axis includes the main body of cylindrical barred body, and No.1 support axle journal, a cylinder admission cam, two cylinder are successively arranged in the main body
Admission cam, No. two support axle journals, three cylinder admission cams and No. three support axle journals, the No.1 support axle journal is in main body axial direction side
To length be greater than No. two support axle journals and No. three support axle journals.Axle journal, No. two support axle journals and three are supported by using No.1
The support construction for the specific position that number support axle journal is formed improves the stability of camshaft.Camshaft supports axle journal close to No.1
One end can be connect with other devices, so No.1 support axle journal the length of main body axial direction be greater than No. two support axle journals with
No. three support axle journals in the length of main body axial direction, to guarantee stability.One cylinder admission cam, two cylinder admission cam and three cylinders
Admission cam respectively corresponds three cylinder bodies in three-cylinder engine.
Preferably, a cylinder exhaust cam, two cylinder exhaust cam and three cylinder exhaust cams are arranged in the main body, it is described
One cylinder exhaust cam is mounted between a cylinder admission cam and two cylinder admission cam, the two cylinder exhaust cam be mounted on two cylinder into
Between gas cam and No. two support axle journals, the three cylinders exhaust cam be mounted on three cylinder admission cams and No. three support axle journals it
Between.
Preferably, the main body is arranged close to the side of No.1 support axle journal is equipped with gear mounting shaft neck, the tooth
Wheel installation axle journal is equipped with keyway.
Preferably, the body interior is equipped with signal boss, the signal boss is mounted on two cylinder admission cam and two
Between cylinder exhaust cam.By the way that signal boss is mounted on body interior, make to be laid out more compact.
Preferably, the outer diameter of the No.1 support axle journal, No. two support axle journals and No. three support axle journals is identical, described one
Number support axle journal, No. two support axle journals and No. three support axle journals outer diameter be the three-cylinder engine middle camshaft most
Big outer diameter.By using above-mentioned technical proposal, makes to set camshaft in the three-cylinder engine and can be used for tunnel structure
In engine, tunnel structure engine is in engine side providing holes hole, which inserts from hole,
To complete to assemble.Camshaft is placed on to the lid that engine interior covers engine again, which letter relative to traditional
Just, and positioning accuracy is high for folk prescription.
Preferably, it is rear end face that the main body, which supports one end of axle journal close to No. three, the rear end face is equipped with positioning
Fabrication hole.When the middle camshaft of the three-cylinder engine injects the hole of engine, positioning process hole is used for positioning, and is mentioned
Positioning accuracy when high installation.
The utility model has the beneficial effects that the utility model provides a kind of middle cam suitable for three-cylinder engine
Axis meets the requirement of camshaft run stability by using support construction, improves the stability of operating, and the middle
Camshaft can be used for tunnel structure.The middle camshaft of three-cylinder engine provided by the utility model integrates in main body
It is mounted with the structure of each cam, each support axle journal, signal boss and positioning process hole, integral structure makes compact layout,
The utilization rate for improving space helps to give full play to the compact-sized advantage of three-cylinder engine.
Detailed description of the invention
Fig. 1 is the main view of the middle camshaft of the utility model three-cylinder engine；
Fig. 2 is the right view of the middle camshaft of the utility model three-cylinder engine；
Fig. 3 is the cross-sectional view at the middle camshaft A of the utility model three-cylinder engine；
Fig. 4 is the cross-sectional view at the middle camshaft B of the utility model three-cylinder engine；
Wherein: 1. gear mounting shaft necks, 2. keyways, 3. No.1s support axle journal, 4. No. two support axle journals, 5. No. three support shafts
Neck, 6. 1 cylinder admission cams, 7. 1 cylinder exhaust cams, 8. two cylinder admission cams, 9. two cylinder exhaust cams, 10. 3 cylinder air inlets are convex
Wheel, 11. 3 cylinder exhaust cams, 12. signal boss, 13. rear end faces, 14. positioning process holes, 15. main bodys.
Specific embodiment
The utility model is described in further detail With reference to embodiment.
It include main body 15 as shown in Figure 1, present embodiments providing a kind of middle camshaft of three-cylinder engine, it is main
Body 15 is cylindrical barred body, gear mounting shaft neck 1 is successively arranged in main body 15, No.1 supports axle journal 3, a cylinder air inlet convex
Take turns 6, one cylinder exhaust cam 7, two cylinder admission cam 8, two cylinder exhaust cam 9, No. two support axle journals 4, three cylinder admission cams 10, three
Cylinder exhaust cam 11 and No. three support axle journals 5.Wherein, No.1 support axle journal 3 is greater than No. two in the length of 15 axial direction of main body
Axle journal 4 and No. three support axle journals 5 are supported, No.1 supports 3, No. two support axle journals 4 of axle journal and No. three support axle journals 5 to form certain bits
The support construction set.Wherein, the No.1 cylinder body of a cylinder admission cam 6 and the corresponding engine of a cylinder exhaust cam 7, two cylinder air inlet are convex
No. two cylinder bodies of wheel 8 and the corresponding engine of two cylinder exhaust cam 9, three cylinder admission cams 10 and three cylinder exhaust cams 11 correspondence are started
No. three cylinder bodies of machine.It can support 3, No. two support axle journals 4 of axle journal and No. three support axle journal 5 installations can by the way that No.1 is calculated
By the way that the installation site of support axle journal is calculated, most stable of structure is obtained.
No.1 supports axle journal 3, two support axle journals 4 to support the outer diameter of axle journal 5 identical with No. three, and No.1 support axle journal 3,
The outer diameter of No. two support axle journals 4 and No. three support axle journals 5 is the maximum outside diameter size of the middle camshaft of the three-cylinder engine.
Camshaft can be connect close to one end of No.1 support axle journal with other devices, so No.1 supports axle journal 3 in main body axial direction
Length be greater than No. two support axle journals 4 and No. three support axle journals 5 15 axial direction of main body length, to guarantee stability.It should
Middle camshaft is suitable for the engine of tunnel structure, and tunnel structure engine is in engine side providing holes
Hole, which inserts from hole, to complete to assemble.
In conjunction with Fig. 2, it is rear end face 13 that main body 15, which supports one end of axle journal 5 close to No. three, and rear end face 13 is equipped with positioning work
Skill hole 14.
In conjunction with Fig. 3, the keyway 2 of kidney-shaped is provided on gear mounting shaft neck 1.
In conjunction with Fig. 4, it is equipped with signal boss 12 inside main body 15, signal boss 12 is mounted on two cylinder admission cam 8 and two cylinder
Between exhaust cam 9.Signal boss 12 and in-engine sensor mating reaction, never obtain setting in the three-cylinder engine
The speed and number of formula cam axle.
Wherein, which is an integral structure, and gear mounting shaft neck 1, signal boss are equipped in main body 15
12 and positioning process hole 14, integral structure make to be laid out more compact.
Claims (6)
1. a kind of middle camshaft of three-cylinder engine includes the main body (15) of cylindrical barred body, which is characterized in that described
No.1 support axle journal (3), a cylinder admission cam (6), two cylinder admission cam (8), No. two supports are successively arranged in main body (15)
Axle journal (4), three cylinder admission cams (10) and No. three support axle journals (5), No.1 support axle journal (3) is in main body (15) axial direction side
To length be greater than No. two support axle journals (4) and No. three support axle journals (5).
2. the middle camshaft of three-cylinder engine according to claim 1, which is characterized in that covered on the main body (15)
Equipped with a cylinder exhaust cam (7), two cylinder exhaust cam (9) and three cylinder exhaust cams (11), cylinder exhaust cam (7) installation
Between a cylinder admission cam (6) and two cylinder admission cam (8), the two cylinder exhaust cam (9) is mounted on two cylinder admission cam
(8) between No. two support axle journals (4), the three cylinders exhaust cam (11) is mounted on three cylinder admission cams (10) and No. three supports
Between axle journal (5).
3. the middle camshaft of three-cylinder engine according to claim 2, which is characterized in that the main body (15) is close
The side of No.1 support axle journal (3), which is arranged, to be equipped with gear mounting shaft neck (1), and the gear mounting shaft neck (1) is equipped with keyway
(2)。
4. the middle camshaft of three-cylinder engine according to claim 3, which is characterized in that the main body (15) is internal
Equipped with signal boss (12), the signal boss (12) is mounted between two cylinder admission cam (8) and two cylinder exhaust cam (9).
5. the middle camshaft of three-cylinder engine according to any one of claims 1 to 4, which is characterized in that described one
Number support axle journal (3), No. two supports axle journal (4) are identical with No. three support outer diameters of axle journal (5), the No.1 support axle journal (3),
The outer diameter of No. two supports axle journal (4) and No. three supports axle journal (5) is that the maximum of the middle camshaft of the three-cylinder engine is outer
Diameter size.
6. the middle camshaft of three-cylinder engine according to claim 5, which is characterized in that the main body (15) is close
One end of No. three supports axle journal (5) is rear end face (13), and the rear end face (13) is equipped with positioning process hole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821457941.8U CN208749418U (en) | 2018-09-06 | 2018-09-06 | A kind of middle camshaft of three-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821457941.8U CN208749418U (en) | 2018-09-06 | 2018-09-06 | A kind of middle camshaft of three-cylinder engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208749418U true CN208749418U (en) | 2019-04-16 |
Family
ID=66083049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821457941.8U Expired - Fee Related CN208749418U (en) | 2018-09-06 | 2018-09-06 | A kind of middle camshaft of three-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208749418U (en) |
-
2018
- 2018-09-06 CN CN201821457941.8U patent/CN208749418U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190416 Termination date: 20210906 |