CN202690286U - Oil supply advance angle regulating device for single-cylinder diesel oil spray pump - Google Patents
Oil supply advance angle regulating device for single-cylinder diesel oil spray pump Download PDFInfo
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- CN202690286U CN202690286U CN 201220342819 CN201220342819U CN202690286U CN 202690286 U CN202690286 U CN 202690286U CN 201220342819 CN201220342819 CN 201220342819 CN 201220342819 U CN201220342819 U CN 201220342819U CN 202690286 U CN202690286 U CN 202690286U
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- plunger
- plunger piston
- oil
- advance angle
- supply advance
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Abstract
The utility model discloses an oil supply advance angle regulating device for a single-cylinder diesel oil spray pump. The oil supply advance angle regulating device comprises a plunger piston sleeve and a plunger piston, wherein the plunger piston sleeve is arranged in an oil spray pump body, the plunger piston is assembled inside the plunger piston sleeve, the plunger piston sleeve is glidingly matched with the plunger piston, in addition, oil inlet holes and oil return holes are arranged in the plunger piston sleeve, and inclined oil grooves are arranged on the outer surface of the plunger piston and are communicated with oil holes arranged in the axial direction of the plunger piston. The oil supply advance angle regulating device for the single-cylinder diesel oil spray pump has the advantages that the structure is simple, the realization is easy, the spiral inclined oil groove is arranged on the plunger piston, in the work process, the plunger piston only needs to be rotated, and the effective stroke of the plunger piston is different along with different rotating angles of the plunger piston, so the oil supply quantity is also changed, different oil supply advance angle under different work conditions can be conveniently realized, and the dynamic property and the economical performance of the diesel are effectively improved.
Description
Technical field
The utility model relates to a kind of fuel supply advance angle controlling device, relates in particular to a kind of single cylinder diesel engine oil jet pump fuel supply advance angle controlling device.
Background technique
Diesel engine is that burning diesel oil obtains exergonic motor, and the advantages such as power is large, the thermal efficiency is high, economic performance is good that it has are widely used a kind of dynamic power machines.For diesel engine, fuel supply advance angle is a very important parameter, high pressure oil pump shifted to an earlier date the angle of fuel feeding when it referred to that the diesel engine compression piston arrives oil nozzle oil spout before the top dead center. and why in advance fuel feeding is for atomized fuel better, fuel supply advance angle is excessive or too small engine power performance and Economy are had larger impact, diesel engine should have different fuel supply advance angles under different operating modes, more the high request fuel supply advance angle is larger for rotating speed; The lower fuel supply advance angle that requires of rotating speed is less, and diesel engine just can have best power character and Economy like this.The fuel supply advance angle automatic control regulator is housed in the Injection Pump of general multi-cylinder diesel engine more.Owing to being subject to the restriction of structure, single cylinder diesel does not have the fuel supply advance angle automatic regulation function, when single cylinder diesel engine oil jet pump is installed only under the declared working condition, the fuel supply advance angle of certain value is determined in debugging, fuel injection advanced angle can not change under other operating mode like this, greatly reduces power character and the Economy of diesel engine.
The model utility content
The purpose of this utility model is for the problems referred to above, a kind of single cylinder diesel engine oil jet pump fuel supply advance angle controlling device is provided, take the fuel supply advance angle that solves traditional single cylinder diesel engine oil jet pump as definite value, under different operating modes, can't change, reduce the power character of diesel engine and the problem of Economy.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of single cylinder diesel engine oil jet pump fuel supply advance angle controlling device, comprise and be arranged at the plunger bushing in the oil jet pump body and be assemblied in the interior plunger of plunger bushing, described plunger bushing and plunger are slidingly matched, and have on the plunger bushing into, spill port, the outer surface of described plunger is provided with oblique oil groove, and described oblique oil groove is connected to the oilhole of offering with plunger axis.
Further, described oblique oil groove is helical, is arranged at the outer surface at plunger middle part.
Further, the matching gap of described plunger and plunger bushing is 0.013mm～0.016mm.
Further, described plunger is made by middle-carbon steel or high carbon steel.
Further, the middle part that describedly advance, spill port is arranged on plunger bushing.
The beneficial effects of the utility model are, described single cylinder diesel engine oil jet pump is simple in structure with the fuel supply advance angle controlling device, be easy to realize, spiral helicine oblique oil groove is set on the plunger, during work, only need rotary plunger, the angle of rotating along with plunger is different, the effective travel of plunger is also just different, thereby fuel delivery also changes thereupon, can realize easily that different fuel supply advance angles is arranged under different operating modes, Effective Raise power character and the Economy of diesel engine.
Description of drawings
Fig. 1 is the structural representation that the utility model single cylinder diesel engine oil jet pump is used the fuel supply advance angle controlling device;
Fig. 2 is the sectional view of the utility model plunger.
Among the figure:
1, plunger bushing; 2, plunger; 3, advance, spill port; 4, oilhole; 5, oblique oil groove.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Please refer to Figure 1 and Figure 2, Fig. 1 is the structural representation that the utility model single cylinder diesel engine oil jet pump is used the fuel supply advance angle controlling device; Fig. 2 is the sectional view of the utility model plunger.In the present embodiment, a kind of single cylinder diesel engine oil jet pump fuel supply advance angle controlling device, comprise and be arranged at the plunger bushing 1 in the oil jet pump body and be assemblied in plunger 2 in the plunger bushing 1, described plunger bushing 1 is slidingly matched with plunger 2, matching gap between the two is 0.013mm～0.016mm, and the middle part of plunger bushing 1 has into, spill port 3, described plunger 2 is made by high carbon steel, its outer surface is provided with oblique oil groove 5, described oblique oil groove 5 is helical, be arranged at plunger 2 middle parts, it is connected with the oilhole 4 that plunger 2 is axially offered.
During work, when plunger 2 was positioned at lower position, advancing on the plunger bushing 1, spill port 3 were opened, and the inner chamber of plunger bushing 1 communicates with oil duct in the pump housing, and fuel oil is filled with rapidly the grease chamber; When plunger 2 moves up, from plunger 2 begin to move upward to blocked by plunger 2 upper-end surfaces into, spill port 3 before till, during this period of time in because the motion of plunger 2, fuel oil is extruded from the grease chamber, flows to oil duct; When plunger 2 will advance, when spill port 3 blocks, just begin the force feed process, plunger 2 rises, and oil pressure sharply raises in the grease chamber, and fuel oil is pressed into oil pipe and delivers to oil sprayer; When plunger 2 continues to move upward, fuel feeding is also continuing always, the force feed process last till on the plunger 2 middle part outer surfaces oblique oil groove 5 to advance, spill port place 3, at this moment, high pressure oil from the grease chamber on plunger 2 oilhole 4 and plunger bushing 1 on advance, spill port 3 flows back to the oil duct in the pump housing.Wherein, the adjusting of fuel supply advance angle realizes by rotary plunger 2, when plunger 2 rotates, the fuel feeding elapsed time is constant, but the fuel feeding termination time has changed, along with the rotation angle of plunger 2 is different, on the plunger 2 tiltedly oil groove 5 changed the time to the advancing of plunger bushing 1, spill port 3 places, thereby the effective travel of plunger 2 is also just different, thereby fuel delivery also changes thereupon.
Above embodiment has just set forth basic principle of the present utility model and characteristic; the utility model is not limited by above-described embodiment; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various variations and change, and these variations and change all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. single cylinder diesel engine oil jet pump fuel supply advance angle controlling device, it is characterized in that: comprise being arranged at the plunger bushing in the oil jet pump body and being assemblied in the interior plunger of plunger bushing, described plunger bushing and plunger are slidingly matched, and have on the plunger bushing into, spill port, the outer surface of described plunger is provided with oblique oil groove, and described oblique oil groove is connected to the oilhole of offering with plunger axis.
2. single cylinder diesel engine oil jet pump according to claim 1 fuel supply advance angle controlling device, it is characterized in that: described oblique oil groove is helical, is arranged at the outer surface at plunger middle part.
3. single cylinder diesel engine oil jet pump according to claim 1 fuel supply advance angle controlling device, it is characterized in that: the matching gap of described plunger and plunger bushing is 0.013mm～0.016mm.
4. according to claim 1 or 3 described single cylinder diesel engine oil jet pump fuel supply advance angle controlling devices, it is characterized in that: described plunger is made by middle-carbon steel or high carbon steel.
5. single cylinder diesel engine oil jet pump according to claim 1 fuel supply advance angle controlling device is characterized in that: the middle part that describedly advance, spill port is arranged on plunger bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342819 CN202690286U (en) | 2012-07-13 | 2012-07-13 | Oil supply advance angle regulating device for single-cylinder diesel oil spray pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342819 CN202690286U (en) | 2012-07-13 | 2012-07-13 | Oil supply advance angle regulating device for single-cylinder diesel oil spray pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690286U true CN202690286U (en) | 2013-01-23 |
Family
ID=47545912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220342819 Expired - Fee Related CN202690286U (en) | 2012-07-13 | 2012-07-13 | Oil supply advance angle regulating device for single-cylinder diesel oil spray pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767454A (en) * | 2012-07-13 | 2012-11-07 | 无锡凯奥动力机械有限公司 | Fuel supply advance angle regulation device for fuel injection pump of single-cylinder diesel engine |
| CN112761839A (en) * | 2021-01-28 | 2021-05-07 | 长江武汉航道工程局 | Plunger coupling piece of obtuse-angle oil groove of high-pressure oil pump |
-
2012
- 2012-07-13 CN CN 201220342819 patent/CN202690286U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767454A (en) * | 2012-07-13 | 2012-11-07 | 无锡凯奥动力机械有限公司 | Fuel supply advance angle regulation device for fuel injection pump of single-cylinder diesel engine |
| CN112761839A (en) * | 2021-01-28 | 2021-05-07 | 长江武汉航道工程局 | Plunger coupling piece of obtuse-angle oil groove of high-pressure oil pump |
| CN112761839B (en) * | 2021-01-28 | 2021-11-23 | 长江武汉航道工程局 | Plunger coupling piece of obtuse-angle oil groove of high-pressure oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20170713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |