CN103114883A - Camshaft - Google Patents
Camshaft Download PDFInfo
- Publication number
- CN103114883A CN103114883A CN2013100580619A CN201310058061A CN103114883A CN 103114883 A CN103114883 A CN 103114883A CN 2013100580619 A CN2013100580619 A CN 2013100580619A CN 201310058061 A CN201310058061 A CN 201310058061A CN 103114883 A CN103114883 A CN 103114883A
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- China
- Prior art keywords
- camshaft
- cam
- oil supply
- journal
- eccentric cam
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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.)
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- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a camshaft. The camshaft comprises a camshaft journal, and a cam is arranged on the camshaft journal. The camshaft is characterized in that the cam is an eccentric cam. By arranging the eccentric cam on the camshaft, when the camshaft rotates, the eccentric cam rotates along with the camshaft and rotates for a circle to achieve multi-cylinder four-stroke oil supply. By the arrangement, multi-cylinder oil supply is achieved while high-pressure constant-pressure injection of an oil supply system can be guaranteed, stability of a diesel engine is improved, the camshaft is guaranteed to be small in size, and service life of the camshaft is prolonged.
Description
Technical field
The present invention relates to a kind of parts of diesel injection pump, the camshaft that especially a kind of electronic control injection pump assembly is used.
Background technique
Existing diesel injection pump, number be the Chinese patent of CN2605397Y as notice of authorization, a kind of diesel injection pump is disclosed, comprise the pump housing, plunger coupled parts, camshaft, high-pressure oil pipe, oil sprayer, outlet valve, accumulator and distributor, cam on camshaft is used for promoting the plunger to-and-fro motion, produces high pressure oil; When camshaft was driven in rotation, the projection of cam promoted plunger and constantly rises in extreme lower position, and diesel oil is compressed, and when pressure reached certain numerical value, outlet valve was pressed off, and high pressure oil enters in reservoir; Cam fuel feeding after the extreme higher position turns over several angle finishes, and so continuous repetition is compressed into high pressure oil input reservoir with low pressure oil.
Camshaft used in above-mentioned this Injection Pump, the cam that arranges on it, revolving turns around only can realize single-stroke, fuel feeding efficient is low, when needs multi-position fuel feeding, corresponding a plurality of cam need to be set on camshaft, can cause the camshaft overall volume to increase yet do like this, impact is used.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of camshaft, can realize many strokes of multi-cylinder working method, and simple in structure, small volume.
The present invention solves the problems of the technologies described above the technological scheme that adopts: a kind of camshaft, comprise cam journal, and described cam journal is provided with cam, it is characterized in that, and described cam is eccentric cam.
The both sides of described cam are respectively equipped with back shaft, and back shaft can be connected with gear etc., is connected with exterior mechanical by gear or other driving components.
Compared with prior art, the invention has the advantages that: camshaft of the present invention can be used for F series vertical type single cylinder diesel (containing F186, F178, F168 and amelioration product thereof), by eccentric cam is set on camshaft, when camshaft rotates, eccentric cam rotates thereupon, and revolving turns around can realize the multicylinder four-stroke fuel feeding; So arrange, can guarantee again the injection of oil supply system high pressure constant voltage when realizing the multi-cylinder fuel feeding, improved the stability of diesel engine, and guaranteed that simultaneously camshaft has less volume, has improved the working life of camshaft simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of camshaft of the present invention;
Fig. 2 is the sectional view of the camshaft of Fig. 1.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Referring to Fig. 1 and Fig. 2, a kind of camshaft comprises cam journal 1, and cam journal 1 is provided with cam 2, and cam 2 is eccentric cam.The both sides of cam 2 are respectively equipped with back shaft 3, are used for being connected with exterior mechanical after assembling gear or other driving components.
When camshaft was driven in rotation, the projection of cam 2 promoted plunger and constantly rises in extreme lower position, and diesel oil is compressed, and when pressure reached certain numerical value, outlet valve was pressed off, and high pressure oil enters in reservoir; Cam 2 finishes at the extreme higher position fuel feeding after turning over 900; Then, cam 2 is rotated further, and enters the process of next round compression diesel oil, and so continuous repetition is compressed into high pressure oil input reservoir with low pressure oil.Thus, when cam 2 turns over a circle, realize the four-stroke fuel feeding.
The above is only the preferred embodiment of the present invention, should be pointed out that for the ordinary skill in the art, not breaking away under principle prerequisite of the present invention, can also make various deformation and improvement, and this also should be considered as protection scope of the present invention.
Claims (2)
1. a camshaft, comprise cam journal (1), and described cam journal (1) is provided with cam (2), it is characterized in that, described cam (2) is eccentric cam.
2. camshaft as claimed in claim 1, is characterized in that, the both sides of described cam (2) are respectively equipped with back shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100580619A CN103114883A (en) | 2013-02-22 | 2013-02-22 | Camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100580619A CN103114883A (en) | 2013-02-22 | 2013-02-22 | Camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103114883A true CN103114883A (en) | 2013-05-22 |
Family
ID=48413314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100580619A Pending CN103114883A (en) | 2013-02-22 | 2013-02-22 | Camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103114883A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008038848A (en) * | 2006-08-09 | 2008-02-21 | Yanmar Co Ltd | Fuel injection pump |
| CN102102553A (en) * | 2009-12-21 | 2011-06-22 | 运城常运动力机械有限公司 | Assembled camshaft |
| CN102939461A (en) * | 2010-05-19 | 2013-02-20 | 格瑞克明尼苏达有限公司 | Offset cam for piston pump |
| CN203050823U (en) * | 2013-02-22 | 2013-07-10 | 慈溪市联发机械有限公司 | Cam shaft |
-
2013
- 2013-02-22 CN CN2013100580619A patent/CN103114883A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008038848A (en) * | 2006-08-09 | 2008-02-21 | Yanmar Co Ltd | Fuel injection pump |
| CN102102553A (en) * | 2009-12-21 | 2011-06-22 | 运城常运动力机械有限公司 | Assembled camshaft |
| CN102939461A (en) * | 2010-05-19 | 2013-02-20 | 格瑞克明尼苏达有限公司 | Offset cam for piston pump |
| CN203050823U (en) * | 2013-02-22 | 2013-07-10 | 慈溪市联发机械有限公司 | Cam shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130522 |