CN102767454A - Fuel supply advance angle regulation device for fuel injection pump of single-cylinder diesel engine - Google Patents
Fuel supply advance angle regulation device for fuel injection pump of single-cylinder diesel engine Download PDFInfo
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- CN102767454A CN102767454A CN2012102449622A CN201210244962A CN102767454A CN 102767454 A CN102767454 A CN 102767454A CN 2012102449622 A CN2012102449622 A CN 2012102449622A CN 201210244962 A CN201210244962 A CN 201210244962A CN 102767454 A CN102767454 A CN 102767454A
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- plunger
- fuel supply
- fuel
- advance angle
- injection pump
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Abstract
The invention discloses a fuel supply advance angle regulation device for a fuel injection pump of a single-cylinder diesel engine. The device comprises a plunger sleeve arranged in a pump body of the fuel injection pump and a plunger assembled in the plunger sleeve, wherein the plunger sleeve is matched with the plunger in a sliding way; a fuel feed and return hole is formed in the plunger sleeve; and an inclined fuel groove is formed on the outer surface of the plunger, and is communicated with a fuel hole axially reserved in the plunger. The fuel supply advance angle regulation device for the fuel injection pump of the single-cylinder diesel engine is simple in structure and easy to implement; and the spiral inclined fuel groove is formed on the plunger, and when the device works, only the plunger is required to be rotated by different angles to obtain different effective travels and further change fuel supply, so that different fuel supply advance angles can be conveniently obtained under different working conditions to effectively improve the dynamic property and economy of the diesel engine.
Description
Technical field
The present invention relates to a kind of fuel supply advance angle controlling device, relate in particular to a kind of single cylinder diesel Injection Pump and use the fuel supply advance angle controlling device.
Background technique
Diesel engine is that burning diesel oil obtains exergonic motor, and advantages such as power is big, the thermal efficiency is high, economic performance is good that it has are widely used a kind of dynamic power machines.As far as diesel engine; Fuel supply advance angle is a crucial parameter; It is meant that high pressure oil pump when the diesel engine compression piston arrives oil nozzle oil spout before the top dead center shifts to an earlier date the angle of fuel feeding. 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 bigger influence, and diesel engine should have different fuel supply advance angles under different working conditions, and rotating speed high request fuel supply advance angle more is big more; Rotating speed is low more to require fuel supply advance angle more little, 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 receive the restriction of structure; Single cylinder diesel does not have the automatic regulatory function of fuel supply advance angle; Only be directed against under the declared working condition when single cylinder diesel Injection Pump is installed; The fuel supply advance angle of certain value is confirmed in debugging, and fuel injection advanced angle can not change under other operating mode like this, greatly reduces the power character and the Economy of diesel engine.
Summary of the invention
The objective of the invention is to the problems referred to above; Provide a kind of single cylinder diesel Injection Pump to use the fuel supply advance angle controlling device; With the fuel supply advance angle that solves traditional single cylinder diesel Injection Pump is definite value, under different operating modes, can't change, and has reduced the power character of diesel engine and the problem of Economy.
The objective of the invention is to realize through following technological scheme:
A kind of single cylinder diesel Injection Pump is used the 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 plunger in the plunger bushing; Said plunger bushing and plunger are slidingly matched; And have on the plunger bushing into, spill port, the outer surface of said plunger is provided with oblique oil groove, said oblique oil groove is connected to the oilhole of offering with plunger axis.
Further, said oblique oil groove is a helical, is arranged at the outer surface at plunger middle part.
Further, the matching gap of said plunger and plunger bushing is 0.013mm～0.016mm.
Further, said plunger is processed by middle-carbon steel or high carbon steel.
Further, the middle part that saidly advance, spill port is arranged on plunger bushing.
Beneficial effect of the present invention does, said single cylinder diesel Injection 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 also change thereupon of fuel delivery, can be implemented in easily has different fuel supply advance angles under the different operating modes, effectively improved the power character and the Economy of diesel engine.
Description of drawings
Fig. 1 is the structural representation of single cylinder diesel Injection Pump of the present invention with the fuel supply advance angle controlling device;
Fig. 2 is the sectional view of plunger of the present invention.
Among the figure:
1, plunger bushing; 2, plunger; 3, advance, spill port; 4, oilhole; 5, oblique oil groove.
Embodiment
Further specify technological scheme of the present invention below in conjunction with accompanying drawing and through embodiment.
Please with reference to Fig. 1 and shown in Figure 2, Fig. 1 is the structural representation of single cylinder diesel Injection Pump of the present invention with the fuel supply advance angle controlling device; Fig. 2 is the sectional view of plunger of the present invention.In present embodiment, a kind of single cylinder diesel Injection Pump is used the fuel supply advance angle controlling device, comprises being arranged at the plunger bushing 1 in the oil jet pump body and being assemblied in the plunger 2 in the plunger bushing 1; Said 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, and said plunger 2 is processed by high carbon steel; Its outer surface is provided with oblique oil groove 5; Said oblique oil groove 5 is a helical, is arranged at plunger 2 middle parts, and 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 the grease chamber rapidly; When plunger 2 moves up, from plunger 2 begin to move upward to into, spill port 3 blocked by plunger 2 upper-end surfaces 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 to press oily 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; Press oily 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 advancing on the oilhole 4 of grease chamber on plunger 2 and the plunger bushing 1, spill port 3 flow back to the oil duct in the pump housing.Wherein, the adjusting of fuel supply advance angle realizes through 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 invention and characteristic; The present invention is not limited by the foregoing description; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various variations and change, and these variations and change all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. a single cylinder diesel Injection Pump is used the 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 plunger in the plunger bushing; Said plunger bushing and plunger are slidingly matched; And have on the plunger bushing into, spill port, the outer surface of said plunger is provided with oblique oil groove, said oblique oil groove is connected to the oilhole of offering with plunger axis.
2. single cylinder diesel Injection Pump according to claim 1 is used the fuel supply advance angle controlling device, it is characterized in that: said oblique oil groove is a helical, is arranged at the outer surface at plunger middle part.
3. single cylinder diesel Injection Pump according to claim 1 is used the fuel supply advance angle controlling device, it is characterized in that: the matching gap of said plunger and plunger bushing is 0.013mm～0.016mm.
4. use the fuel supply advance angle controlling device according to claim 1 or 3 described single cylinder diesel Injection Pumps, it is characterized in that: said plunger is processed by middle-carbon steel or high carbon steel.
5. single cylinder diesel Injection Pump according to claim 1 is used the fuel supply advance angle controlling device, it is characterized in that: the middle part that saidly advance, spill port is arranged on plunger bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102449622A CN102767454A (en) | 2012-07-13 | 2012-07-13 | Fuel supply advance angle regulation device for fuel injection pump of single-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102449622A CN102767454A (en) | 2012-07-13 | 2012-07-13 | Fuel supply advance angle regulation device for fuel injection pump of single-cylinder diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767454A true CN102767454A (en) | 2012-11-07 |
Family
ID=47094977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102449622A Pending CN102767454A (en) | 2012-07-13 | 2012-07-13 | Fuel supply advance angle regulation device for fuel injection pump of single-cylinder diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767454A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114962104A (en) * | 2022-06-11 | 2022-08-30 | 重庆潍柴发动机有限公司 | Method for realizing adjustable oil supply pretravel of diesel engine plunger oil pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742173Y (en) * | 2004-11-17 | 2005-11-23 | 常柴股份有限公司 | Plunger for single cylinder diesel engine oil jet pump |
| CN101694194A (en) * | 2009-08-20 | 2010-04-14 | 余姚市舒春机械有限公司 | Plunger and barrel assembly of oil injection pump of high-power diesel engine |
| JP2011202579A (en) * | 2010-03-25 | 2011-10-13 | Yanmar Co Ltd | Single cylinder diesel engine |
| CN202690286U (en) * | 2012-07-13 | 2013-01-23 | 无锡凯奥动力机械有限公司 | Oil supply advance angle regulating device for single-cylinder diesel oil spray pump |
-
2012
- 2012-07-13 CN CN2012102449622A patent/CN102767454A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742173Y (en) * | 2004-11-17 | 2005-11-23 | 常柴股份有限公司 | Plunger for single cylinder diesel engine oil jet pump |
| CN101694194A (en) * | 2009-08-20 | 2010-04-14 | 余姚市舒春机械有限公司 | Plunger and barrel assembly of oil injection pump of high-power diesel engine |
| JP2011202579A (en) * | 2010-03-25 | 2011-10-13 | Yanmar Co Ltd | Single cylinder diesel engine |
| CN202690286U (en) * | 2012-07-13 | 2013-01-23 | 无锡凯奥动力机械有限公司 | Oil supply advance angle regulating device for single-cylinder diesel oil spray pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114962104A (en) * | 2022-06-11 | 2022-08-30 | 重庆潍柴发动机有限公司 | Method for realizing adjustable oil supply pretravel of diesel engine plunger oil pump |
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Application publication date: 20121107 |