CN103206283A - Plunger type fuel injection pump of miniature aerodynamic engine - Google Patents
Plunger type fuel injection pump of miniature aerodynamic engine Download PDFInfo
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- CN103206283A CN103206283A CN2013100343327A CN201310034332A CN103206283A CN 103206283 A CN103206283 A CN 103206283A CN 2013100343327 A CN2013100343327 A CN 2013100343327A CN 201310034332 A CN201310034332 A CN 201310034332A CN 103206283 A CN103206283 A CN 103206283A
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- Fuel-Injection Apparatus (AREA)
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Abstract
The invention relates to engine lubrication systems, in particular to a plunger type fuel injection pump of a miniature aerodynamic engine. The fuel injection pump comprises an upper pump body, a lower pump body, an oil inlet, an oil outlet, an oil outlet valve, an oil outlet valve seat and a plunger. The fuel injection pump pumps the lubricating oil from an oil tank through the air pressure difference and then ejects the lubricating oil out from an oil outlet channel to lubricate an engine control system, a crank system and the chamber of a piston. The fuel injection pump can be arranged on different parts of the engine, so that the length of a high-pressure oil pipe can be shortened, the adverse effect of the hydrodynamic effect in the pipe can be reduced, the uniformity and the stability of the fuel injection are facilitated, and accordingly the internal space of the engine is saved.
Description
Technical field
The present invention relates to technical field of engines, in particular to a kind of jerk fuel injection pump of miniature air power engine.
Background technique
Motor car engine in use, colloid and dirt in the oil duct are on the increase, and can cause cylinder pressure to descend, practical manifestation for be short of power, oil consumption is high.The dirt that crankcase ventilation mouth place also can be produced stops up, and causes crankcase pressure to rise, and causes the machine oil burning.If the dirt in the untimely cleaning, oil leab is cumulative, cause oil leab to narrow down, lubricant oil can not arrive rubbing surface fully, and motor is worn and torn too early, and the lubricant passage way system of motor is vital thus.
In addition, at present on motor, by installing eccentric shaft additional, a series of full lift range variable moving elements such as intermediate rockers are to realize the adjustable of valve lift and port timing, by using this kind technology can save fuel oil greatly and improve the car load power character, but since increasing of engine component need to be lubricated between component and the component, and the oil circuit arrangement of conventional engines is lubricated less than the component that increase, thereby can't meet the demands.
For example application number is a kind of engine oil gallery of 201110180384.6, and air inlet VVT fuel feeding oil duct, exhaust VVT fuel feeding oil duct, admission cam shaft oil leab, exhaust cam shaft profit oil duct and eccentric shaft profit oil duct all are communicated with main oil gallery; Simultaneously air inlet VVT fuel feeding oil duct and exhaust VVT fuel feeding oil duct are arranged on the cylinder cap, can effectively save the space that lubricating oil path takies motor, overall in light weight of motor.Each oil duct is communicated with main oil gallery, certainly will bring certain pressure to main oil gallery, and oil return speed is slowed down, and the pipeline strength in the oil duct is required to improve, and then increased cost.
For example application number is a kind of lubricating oil way of automobile engine of 200810186258.X again, it is provided with one-way valve by the ingress that enters the cylinder cap main oil gallery at the cylinder body main oil gallery, after having solved engine start, air in the oil duct cavity is compressed, the machine oil air content adds ambassador's hydraulic parts operational failure, in hidden danger such as no oil condition lower bearing wearing and tearing aggravations.But, when in-engine component increase, need to be lubricated between component and the component, and the oil circuit arrangement of this motor is lubricated less than the component that increase, and has taken the inner space of motor.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of jerk fuel injection pump of miniature air power engine, the lubrication system that is intended to solve the inner components of air-powered motor in the prior art takies the bigger inner space of motor, Injection Pump of the present invention can be arranged in the different parts of motor, can shorten the length of high-pressure oil pipe like this, thereby can reduce the harmful effect of intraluminal fluid stress effect, it is all even stable to be conducive to oil spout, and then the inner space of having saved motor, for this reason, the present invention adopts following technological scheme.
A kind of jerk fuel injection pump of miniature air power engine, described air-powered motor comprise, control system, crankshaft system, piston, air-inlet cavity and body shell; Described oil-way system comprises, oil input channel, oil road, upwards oil duct, connecting rod lubrication oil duct, crankshaft lubrication oil duct, return tube, fine cleaner and oil sump; Described jerk fuel injection pump comprises, upper pump casing, lower pump body, filler opening, oil outlet, outlet valve, outlet valve valve seat and plunger; Be provided with right side cavity and left side cavity in the described upper pump casing, the lubricant oil in the oil sump enters by oil input channel in the right side cavity of upper pump casing, and the lubricant oil after intake cam rotates 240 degree in the cavity of right side enters the left side cavity, sprays from oil road subsequently.
Preferably, described oil road is divided into upwards oil duct and crankshaft lubrication oil duct.
In the such scheme preferably, described upwards oil duct flow through valve end, rocking arm, air inlet tappet, exhaust tappet, air inlet controlling rod and exhaust controlling rod in the control system.
In the such scheme preferably, described crankshaft lubrication oil duct flow through intake cam, the face that exhaust cam contacts with bent axle, the key of bent axle and the cavity of piston.
Preferably, described upper pump casing links together by joint and lower pump body in the such scheme.
Preferably, the joint of described joint and upper pump casing and lower pump body is provided with seal ring in the such scheme.
Preferably, be equipped with outlet valve in described right side cavity and the left side cavity in the such scheme, outlet valve is resisted against in the outlet valve valve seat by oil outlet valve spring.
Preferably, described right side cavity communicates with filler opening in the such scheme, and the left side cavity communicates with oil outlet.
Preferably, described lower pump body is the inner housing that has cavity in the such scheme, and plunger places in the cavity of lower pump body, and the lower end of plunger is provided with roller.
Preferably, in the cavity of described lower pump body oil pump spring is installed in the such scheme, and is resisted against the top of the cavity of lower pump body by plunger.
Description of drawings
Fig. 1 is the structural representation according to the preferred embodiment of the oil-way system of miniature air power engine of the present invention;
Fig. 2 is the sectional view according to the preferred embodiment of jerk fuel injection pump in the oil-way system of miniature air power engine of the present invention.
Label in the accompanying drawing:
Air-inlet cavity 12, piston 18, control system 100, crankshaft system 200, exhaust cam 215, intake cam 216, oil input channel 310, oil road 311, the oil duct 312 that makes progress, connecting rod lubrication oil duct 313, crankshaft lubrication oil duct 314, return tube 315, fine cleaner 316, oil sump 317, jerk fuel injection pump 400, outlet valve valve seat 410, upper pump casing 411, oil outlet 412, filler opening 413, oil outlet valve spring 414, outlet valve 415, joint 416, lower pump body 417, oil pump spring 418, roller 419, plunger 420.
Embodiment
The following description only is exemplary and be not in order to limit the disclosure, application or purposes in essence.Be further described below in conjunction with the embodiment of Figure of description to the jerk fuel injection pump of miniature air power engine of the present invention.
(the filled arrows direction is the direction that lubricant oil flows to referring to Fig. 1; The hollow arrow direction is the parts sense of rotation), it shows the structural representation of a preferred embodiment of the oil-way system of miniature air power engine.This oil-way system comprises: the control system 100 of motor, crankshaft system 200, intake cam 216, exhaust cam 215, piston 18, air-inlet cavity 12, oil sump 317, this oil-way system also comprise with crankshaft system 200 on be connected jerk fuel injection pump 400, utilize the pressure difference of air with the lubricant oil sucking-off in the oil sump 317, then from oil road 311 ejections, and then the cavity of control system 100, crankshaft system 200 and the piston 18 of motor is lubricated, the control system 100 directly over the body shell of jerk fuel injection pump 400 and motor is 45 degree directions and places.
Next consult Fig. 2, it shows the sectional view of a preferred embodiment of jerk fuel injection pump 400 in the oil-way system of the present invention.Jerk fuel injection pump 400 comprises upper pump casing 411, lower pump body 417, filler opening 413, oil outlet 412, outlet valve 415, outlet valve valve seat 410 and plunger 420.Be provided with right side cavity 421 and left side cavity 422 in the upper pump casing 411; Upper pump casing 411 links together by joint 416 and lower pump body 417; Joint 416 is provided with seal ring with upper pump casing 411 and lower pump body 417 joints.Be equipped with outlet valve 415 in right side cavity 421 and the left side cavity 422, outlet valve 415 is resisted against in the outlet valve valve seat 410 by oil outlet valve spring 414; Right side cavity 421 communicates with filler opening 413, and left side cavity 422 communicates with oil outlet 412.Described lower pump body 417 is the inner housing that has cavity, and plunger 420 places in the cavity of lower pump body 417; Oil pump spring 418 is installed in the cavity of lower pump body 417, and is resisted against the top of the cavity of lower pump body 417 by plunger 420; The lower end of described plunger 420 is provided with roller 419.
Next continue to consult the working principle that Fig. 2 introduces jerk fuel injection pump 400.Plunger 420 is made up of plunger bushing (not mark) and plug core (not mark), plunger bushing is installed on the lower pump body 417 and fixes, lower pump body 417 is sealed connected together by joint 416 with upper pump casing 411, and plug core is moving up and down under the effect of intake cam 216.When plunger 400 was descending, filler opening 413 was opened, and the lubricant oil in the oil sump 317 enter in the right side cavity 421, intake cam 216 turns over several angle, plug core is up, and plunger bushing, plug core top and outlet valve form confined space at this moment, and plunger continues up, the lubricating oil pressure of plunger inside raises, after greater than outlet valve 415 cracking pressures, extrude from oil outlet 412, enter oil road 311 ejections, intake cam 216 continues rotation then, enters next circulation.
Be described in detail oil-way system working condition of the present invention in conjunction with Fig. 1 and Fig. 2.When motor enters pressurized air and starts working from air-inlet cavity 12, bent axle on the crankshaft system 200 rotates counterclockwise, the intake cam 216 that connects by key on the bent axle is also along with rotating counterclockwise of bent axle rotated, turn over 75 when spending at bent axle, lower pump body 417 upper rollers 419 of jerk fuel injection pump 400 slide into the basic circle disc of intake cam 216, owing to be provided with oil pump spring 418 in the plunger 420, so the elastic force lower plunger 420 at oil pump spring 419 moves downward, air in the upper pump casing 411 is drawn out of, the upper pump casing 411 inner pressure differences that produce, and then the outlet valve under the filler opening 413 415 presses to the inner chamber of outlet valve valve seat 410, and the lubricant oil in the oil sump 317 enters in the right side cavity 421 of upper pump casing 411 by oil input channel 310 sucking-off in the oil sump 317 filler opening 413 of flowing through after fine cleaner 316 removal of impurities.
After intake cam 216 rotates 240 degree, protruding disc and roller 419 on the intake cam 216 are inconsistent, make plunger 420 move upward, oil pump spring 418 is compressed, and the extruding force of oil pump spring 418 is pressed to the lubricant oil in the right side cavity 421 rapidly in the left side cavity 422 of upper pump casing 411.The outlet valve 415 that lubricant oil on the left of entering in the cavity 422 back down under the oil outlet 412 is opened, and the lubricant oil in the left side cavity 422 spray through oil road 311 from oil outlet 412 discharge currents rapidly.
It is logical that lubricant oil in the oil road 311 is divided into two path flow: the one tunnel is the oil duct 312 that makes progress, and another road is crankshaft lubrication oil duct 314.The oil duct 312 valve end in the lubricating engine control system 100 at first upwards, the lubricant oil that gets off from the valve end enters exhaust rocker arm (not mark), flows to exhaust tappet (not mark), air inlet tappet (not mark), intake cam 216, exhaust cam 215 and air inlet control bearing (not mark), exhaust control bearing (not mark) etc. successively along exhaust rocker arm subsequently.
The oil channel hole of lubricant oil in the crankshaft lubrication oil duct 314 in bent axle (not mark) enters 313 pairs of piston rods of connecting rod lubrication oil duct (not mark) and is lubricated, and the lubricant oil of the piston rod of flowing through is lubricated piston rod and bent axle (not mark) surface of contact simultaneously; The piston cavity that the lubricant oil that gets off from piston rod enters piston 18 is lubricated piston cavity.
Lubricant oil in the oil road 310 are flowed through after upwards each component lubrication of oil duct 312 and 314 pairs of motors of crankshaft lubrication oil duct is finished, final lubricant oil falls in the engine body shell (not mark), gets back in the oil sump by the return tube 315 of body shell (not mark) bottom again.When motor back and forth rotates, oil-way system to each parts of motor according to above-mentioned greasing circulating lubrication.
The jerk fuel injection pump that it will be apparent to those skilled in the art that miniature air power engine of the present invention comprises the combination in any of each several part in this specification.As space is limited and in order to make specification simple and clear, these combinations not to be introduced one by one in detail at this, but after having seen this specification, the scope of the present invention that the combination in any of the each several part that is made of this specification constitutes is self-evident.
Claims (10)
1. the jerk fuel injection pump of a miniature air power engine, described air-powered motor comprises, control system, crankshaft system, piston, air-inlet cavity and body shell; Described oil-way system comprises oil input channel, oil road, oil duct, connecting rod lubrication oil duct, crankshaft lubrication oil duct, return tube, fine cleaner and oil sump make progress; Described jerk fuel injection pump comprises upper pump casing, lower pump body, filler opening, oil outlet, outlet valve, outlet valve valve seat and plunger;
It is characterized in that: be provided with right side cavity and left side cavity in the described upper pump casing, lubricant oil in the oil sump enters in the right side cavity of upper pump casing by oil input channel, lubricant oil after intake cam rotates 240 degree in the cavity of right side enters the left side cavity, sprays from oil road subsequently.
2. jerk fuel injection pump as claimed in claim 1 is characterized in that: described oil road is divided into upwards oil duct and crankshaft lubrication oil duct.
3. jerk fuel injection pump as claimed in claim 2 is characterized in that: described upwards oil duct flow through valve end, rocking arm, air inlet tappet, exhaust tappet, air inlet controlling rod and exhaust controlling rod in the control system.
4. jerk fuel injection pump as claimed in claim 2 is characterized in that: described crankshaft lubrication oil duct flow through intake cam, the face that exhaust cam contacts with bent axle, the key of bent axle and the cavity of piston.
5. oil-way system as claimed in claim 1, it is characterized in that: described upper pump casing links together by joint and lower pump body.
6. jerk fuel injection pump as claimed in claim 5, it is characterized in that: the joint of described joint and upper pump casing and lower pump body is provided with seal ring.
7. jerk fuel injection pump as claimed in claim 1, it is characterized in that: be equipped with outlet valve in described right side cavity and the left side cavity, outlet valve is resisted against in the outlet valve valve seat by oil outlet valve spring.
8. as the jerk fuel injection pump of claim 1 or 7, it is characterized in that: described right side cavity communicates with filler opening, and the left side cavity communicates with oil outlet.
9. as the jerk fuel injection pump of claim 1 or 5, it is characterized in that: described lower pump body is the inner housing that has cavity, and plunger places in the cavity of lower pump body, and the lower end of plunger is provided with roller.
10. jerk fuel injection pump as claimed in claim 9 is characterized in that: in the cavity of described lower pump body oil pump spring is installed, and is resisted against the top of the cavity of lower pump body by plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034332.7A CN103206283B (en) | 2013-01-30 | 2013-01-30 | The jerk fuel injection pump of miniature air power engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034332.7A CN103206283B (en) | 2013-01-30 | 2013-01-30 | The jerk fuel injection pump of miniature air power engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206283A true CN103206283A (en) | 2013-07-17 |
| CN103206283B CN103206283B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310034332.7A Active CN103206283B (en) | 2013-01-30 | 2013-01-30 | The jerk fuel injection pump of miniature air power engine |
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| CN (1) | CN103206283B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111512026A (en) * | 2017-12-13 | 2020-08-07 | 汉斯延森注油器公司 | Large low-speed two-stroke engine, method for lubricating same and injector provided with electric pump system for such engine and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4458643A (en) * | 1982-03-09 | 1984-07-10 | Diesel Kiki Co., Ltd. | Lubricating oil feeding device for fuel injection pumps |
| CN87104711A (en) * | 1986-06-16 | 1987-12-30 | 迪尔公司 | Engine cooling and lubricated group shot |
| CN87202952U (en) * | 1987-03-06 | 1988-03-23 | 国家机械工业委员会无锡油泵油嘴研究所 | Oil pump for internal combustion engine |
| CN1908389A (en) * | 2005-08-03 | 2007-02-07 | Etg有限公司 | Small-size four-stroke ic engine |
| CN201090927Y (en) * | 2007-04-13 | 2008-07-23 | 那永春 | Bearing pressure lubrication apparatus |
| CN102536568A (en) * | 2012-02-08 | 2012-07-04 | 武汉科技大学 | In-line diaphragm-type pressurizing pump for dimethyl-ether engine |
| CN203081527U (en) * | 2013-01-30 | 2013-07-24 | 祥天控股（集团）有限公司 | Plunger type fuel injection pump of miniature aerodynamic engine |
-
2013
- 2013-01-30 CN CN201310034332.7A patent/CN103206283B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4458643A (en) * | 1982-03-09 | 1984-07-10 | Diesel Kiki Co., Ltd. | Lubricating oil feeding device for fuel injection pumps |
| CN87104711A (en) * | 1986-06-16 | 1987-12-30 | 迪尔公司 | Engine cooling and lubricated group shot |
| CN87202952U (en) * | 1987-03-06 | 1988-03-23 | 国家机械工业委员会无锡油泵油嘴研究所 | Oil pump for internal combustion engine |
| CN1908389A (en) * | 2005-08-03 | 2007-02-07 | Etg有限公司 | Small-size four-stroke ic engine |
| CN201090927Y (en) * | 2007-04-13 | 2008-07-23 | 那永春 | Bearing pressure lubrication apparatus |
| CN102536568A (en) * | 2012-02-08 | 2012-07-04 | 武汉科技大学 | In-line diaphragm-type pressurizing pump for dimethyl-ether engine |
| CN203081527U (en) * | 2013-01-30 | 2013-07-24 | 祥天控股（集团）有限公司 | Plunger type fuel injection pump of miniature aerodynamic engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111512026A (en) * | 2017-12-13 | 2020-08-07 | 汉斯延森注油器公司 | Large low-speed two-stroke engine, method for lubricating same and injector provided with electric pump system for such engine and method |
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| Publication number | Publication date |
|---|---|
| CN103206283B (en) | 2015-11-25 |
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