CN203488296U - Engine balance shaft assembly integrating driving fuel pump - Google Patents
Engine balance shaft assembly integrating driving fuel pump Download PDFInfo
- Publication number
- CN203488296U CN203488296U CN201320582615.0U CN201320582615U CN203488296U CN 203488296 U CN203488296 U CN 203488296U CN 201320582615 U CN201320582615 U CN 201320582615U CN 203488296 U CN203488296 U CN 203488296U
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- CN
- China
- Prior art keywords
- fuel pump
- balance shaft
- shaft assembly
- cam
- roller tappet
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Abstract
The utility model discloses an engine balance shaft assembly integrating a driving fuel pump. The engine balance shaft assembly comprises the fuel pump, a balance shaft with a gear at the right end, and a cam arranged at the left end of the balance shaft and matched with a roller tappet. The fuel pump comprises a pump body, a plunger movably arranged in the pump body, the roller tappet connected with the lower end of the plunger, and an elastic part which is arranged between the pump body and the roller tappet and normally pushes the roller tappet downwards. According to the engine balance shaft assembly integrating the driving fuel pump, the balance shaft is provided with the cam matched with the roller tappet, when the balance shaft rotates, the cam and the roller tappet are continuously combined and disconnected, then the fuel pump is driven to work, the structure is simple, and the arrangement is reasonable.
Description
Technical field
The utility model relates to field of automobile, particularly relates to a kind of engine balance shaft assembly of integrated driving fuel pump.
Background technique
Along with the progress of engine technology, national Abgasgesetz is more and more strict, and people more and more pay attention to the travelling comfort of vehicle, Security and department of economics.Each producer all concentrates main power to carry out the light-weight design of motor, reduces NVH and improves power per liter, torque per liter.Use traditional crank-driven Injection Pump mode, structure, can not meet the arrangement requirement of motor, need new driving mode.
Model utility content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, an object of the present utility model is to propose the engine balance shaft assembly of kind of integrated driving fuel pump.
According to the engine balance shaft assembly of integrated driving fuel pump of the present utility model, comprise: fuel pump, described fuel pump comprise the pump housing, be movably located at plunger, the roller tappet being connected with the lower end of described plunger in the described pump housing and be located at the described pump housing and described roller tappet between and the downward normal elastic component that promotes described roller tappet; The cogged trunnion shaft of right-hand member tool; And cam, described cam is located at the left end of described trunnion shaft and suitable with described roller tappet.
According to the engine balance shaft assembly of integrated driving fuel pump of the present utility model, on trunnion shaft, be provided with the cam suitable with roller tappet, when trunnion shaft rotates, cam can be constantly combined and disconnection with roller tappet, and then the work of driving fuel pump, simple in structure, connection and reasonable arrangement.
In addition, according to the engine balance shaft assembly of the integrated driving fuel pump of the utility model above-described embodiment, can also there is following additional technical characteristics:
Described cam has one or more peach points.
Described a plurality of peach point is two or three peach points.
Described cam and described trunnion shaft are integrally formed.
Described cam is arranged on described trunnion shaft by hot jacket method, cold cover method or hydraulic extend pipe method.
Described elastic component is spring.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming embodiment's description, wherein:
Fig. 1 is according to the schematic diagram of the fuel pump of the engine balance shaft assembly of an embodiment's of the utility model integrated driving fuel pump;
Fig. 2 is according to the trunnion shaft of engine balance shaft assembly of an embodiment's of the utility model integrated driving fuel pump and the schematic diagram of cam; With
Fig. 3 is the left view of Fig. 2.
Embodiment
Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is less than Second Characteristic.
Below with reference to accompanying drawing, describe the engine balance shaft assembly according to integrated driving fuel pump of the present utility model in detail.
As shown in Figure 1 to Figure 3, the engine balance shaft assembly according to integrated driving fuel pump of the present utility model, comprising: fuel pump 100, trunnion shaft 200 and cam 400.
Specifically, as shown in Figure 1, fuel pump 100 comprise the pump housing 100, be located at plunger 102 in the pump housing 101 movably, hold with (as shown in Figure 1 indicated direction under arrow) under plunger 102 the roller tappet 103 being connected and be located at the pump housing 101 and roller tappet 103 between and the normal elastic component 104 that promotes roller tappet 103 downwards.Advantageously, elastic component 104 can adopt spring.
As shown in Figure 2, the right side of trunnion shaft 200 (as shown in Figure 2 the indicated direction of arrow right) end has gear 300.
Here it should be noted that, above-mentioned " suitable " refers to, when rotating, can be with trunnion shaft 200 moving cam 400 to rotate, when the highest point contact roller tappet 103 of cam 400, roller tappet 103 upwards (as shown in Figure 1 arrow on indicated direction) promotes plunger 102 in compression stroke, when the highest point of cam 400 and roller tappet 103 are thrown off, elastic component 104 promotes roller tappet 103 downwards so that plunger return.This is understandable to those skilled in the art.
According to the engine balance shaft assembly of integrated driving fuel pump of the present utility model, on trunnion shaft 200, be provided with the cam 400 suitable with roller tappet 103, when trunnion shaft 200 rotates, cam 400 can be constantly combined and disconnection with roller tappet 103, and then the work of driving fuel pump, simple in structure, connection and reasonable arrangement.
According to an example of the present utility model, cam 400 has one or more peach points 401.Advantageously, a plurality of peach points 401 are two or three peach points.Thus, can be for obstructed oil-fired system desired injection pressure and different fuel oil pump performance cam 400 is carried out to different designs.
According to an example of the present utility model, cam 400 is integrally formed with trunnion shaft 200.Cam 400 also can be arranged on trunnion shaft 200 by hot jacket method, cold cover method or hydraulic extend pipe method.In other words, can directly on trunnion shaft 200, process peach point 401 to form cam 200.Also can process separately cam 400, utilize mechanical process, as hot jacket method, cold cover method or hydraulic extend pipe method are assemblied on trunnion shaft 200.
Simply describe below according to the working procedure of the engine balance shaft assembly of integrated driving fuel pump of the present utility model.
Cam 400 is in rotary course, and peach point 401 is when extreme higher position, and the elastic force that promotion roller tappet 103 overcomes elastic component 104 upwards promotes plunger 102 in compression stroke.Fuel pump provides high pressure oil, by high-pressure oil pipe and high pressure oil rail, sends oil sprayer to.When peach point 401 is during in extreme lower position, elastic component 104 resets, and promotes roller tappet 103 downwards and drives plungers 102 to reset, and forms vacuum in fuel pump, thereby oil suction is next compression stroke, prepares.Take that to have three peach points 401 on cam 400 be example, trunnion shaft rotates a circle, and fuel pump is realized three tasks circulations, pump oil three times.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, modification, replacement and modification.
Claims (6)
1. an engine balance shaft assembly for integrated driving fuel pump, is characterized in that, comprising:
Fuel pump, described fuel pump comprise the pump housing, be movably located at plunger, the roller tappet being connected with the lower end of described plunger in the described pump housing and be located at the described pump housing and described roller tappet between and the downward normal elastic component that promotes described roller tappet;
The cogged trunnion shaft of right-hand member tool; With
Cam, described cam is located at the left end of described trunnion shaft and suitable with described roller tappet.
2. the engine balance shaft assembly of integrated driving fuel pump according to claim 1, is characterized in that, described cam has one or more peach points.
3. the engine balance shaft assembly of integrated driving fuel pump according to claim 2, is characterized in that, described a plurality of peach points are two or three peach points.
4. according to the engine balance shaft assembly of the integrated driving fuel pump described in any one in claim 1-3, it is characterized in that, described cam and described trunnion shaft are integrally formed.
5. according to the engine balance shaft assembly of the integrated driving fuel pump described in any one in claim 1-3, it is characterized in that, described cam is arranged on described trunnion shaft by hot jacket method, cold cover method or hydraulic extend pipe method.
6. the engine balance shaft assembly of integrated driving fuel pump according to claim 1, is characterized in that, described elastic component is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582615.0U CN203488296U (en) | 2013-09-18 | 2013-09-18 | Engine balance shaft assembly integrating driving fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582615.0U CN203488296U (en) | 2013-09-18 | 2013-09-18 | Engine balance shaft assembly integrating driving fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488296U true CN203488296U (en) | 2014-03-19 |
Family
ID=50259134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582615.0U Expired - Lifetime CN203488296U (en) | 2013-09-18 | 2013-09-18 | Engine balance shaft assembly integrating driving fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203488296U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545549A (en) * | 2016-01-28 | 2016-05-04 | 全椒县全动机械有限公司 | Double-shaft balance single cylinder diesel engine with fuel delivery pump |
| GB2536950A (en) * | 2015-04-01 | 2016-10-05 | Gm Global Tech Operations Llc | Coupling assembly for coupling a camshaft-driven unit pump to a camshaft |
-
2013
- 2013-09-18 CN CN201320582615.0U patent/CN203488296U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2536950A (en) * | 2015-04-01 | 2016-10-05 | Gm Global Tech Operations Llc | Coupling assembly for coupling a camshaft-driven unit pump to a camshaft |
| CN105545549A (en) * | 2016-01-28 | 2016-05-04 | 全椒县全动机械有限公司 | Double-shaft balance single cylinder diesel engine with fuel delivery pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |
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| CX01 | Expiry of patent term |