CN103206283B - The jerk fuel injection pump of miniature air power engine - Google Patents

The jerk fuel injection pump of miniature air power engine Download PDF

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Publication number
CN103206283B
CN103206283B CN201310034332.7A CN201310034332A CN103206283B CN 103206283 B CN103206283 B CN 103206283B CN 201310034332 A CN201310034332 A CN 201310034332A CN 103206283 B CN103206283 B CN 103206283B
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CN
China
Prior art keywords
oil
pump
cavity
injection pump
fuel injection
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CN201310034332.7A
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Chinese (zh)
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CN103206283A (en
Inventor
周登荣
周剑
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祥天控股(集团)有限公司
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Priority to CN201310034332.7A priority Critical patent/CN103206283B/en
Publication of CN103206283A publication Critical patent/CN103206283A/en
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Publication of CN103206283B publication Critical patent/CN103206283B/en

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Abstract

The present invention relates to the lubrication system of motor, in particular to a kind of jerk fuel injection pump of miniature air power engine.This Injection Pump comprises: comprise upper pump casing, lower pump body, filler opening, oil outlet, outlet valve, outlet valve valve seat and plunger, this Injection Pump utilizes the pressure difference of air by the lubricant oil sucking-off in oil sump, then from oil road ejection, and then the cavity of the control system of motor, crankshaft system and piston is lubricated.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, thus can reduce the harmful effect of intraluminal fluid stress effect, is conducive to oil spout all even stable, and then has saved the inner space of motor.

Description

The jerk fuel injection pump of miniature air power engine

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, be on the increase by the colloid in oil duct and dirt, and cylinder pressure can be caused to decline, actually appear be short of power, oil consumption is high.Crankcase ventilation mouth place also can block by the dirt that produces, cause crankcase pressure to rise, cause machine oil to burn.If cleared up not in time, the dirt in oil leab is cumulative, causes oil leab to narrow, and lubricant oil can not arrive rubbing surface fully, makes motor premature abrasion, and the lubricant passage way system of motor is vital thus.

In addition, at present on the engine, by installing eccentric shaft additional, a series of full lift range variable moving element such as intermediate rockers is to realize the adjustable of valve lift and port timing, by using this kind of technology greatly can save fuel oil and improve car load power character, but increasing due to engine component, need between component and component to lubricate, and the oil circuit arrangement lubrication of conventional engines is less than increased component, thus cannot meet the demands.

Such as 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 are all communicated with main oil gallery; Air inlet VVT fuel feeding oil duct and exhaust VVT fuel feeding oil duct are arranged on cylinder cap simultaneously, effectively can save the space that lubricating oil path takies motor, engine total lightweight.Each oil duct is communicated with main oil gallery, certainly will bring certain pressure, oil return speed is slowed down to main oil gallery, requires to improve, and then add cost to the pipeline strength in oil duct.

Such as 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 entering cylinder cap main oil gallery at cylinder body main oil gallery, after solving engine start, air in oil duct cavity is compressed, machine oil air content adds ambassador's hydraulic parts operational failure, in the hidden danger such as aggravation of wearing and tearing without oil condition lower bearing.But, when in-engine component increase, need between component and component to lubricate, and the oil circuit arrangement of this motor lubrication is less than increased component, and occupies 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 being intended to the inner components solving air-powered motor in prior art takies the larger inner space of motor, Injection Pump of the present invention can be arranged in the different parts of motor, the length of high-pressure oil pipe can be shortened like this, thus the harmful effect of intraluminal fluid stress effect can be reduced, be conducive to oil spout all even stable, and then saved the inner space of motor, for this reason, the present invention adopts following technological scheme.

A jerk fuel injection pump for miniature air power engine, described air-powered motor comprises, control system, crankshaft system, piston, air-inlet cavity and machine 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 described upper pump casing, the lubricant oil in oil sump enters in the right side cavity of upper pump casing by oil input channel, and the lubricant oil after intake cam rotates 240 degree in the cavity of right side enters left side cavity, sprays subsequently from oil road.

Preferably, described oil road is divided into upwards oil duct and crankshaft lubrication oil duct.

In such scheme preferably, described upwards oil duct flows through valve end in control system, rocking arm, air inlet tappet, exhaust tappet, air inlet controlling rod and gas exhaust inspecting bar.

In such scheme preferably, described crankshaft lubrication oil duct flows through intake cam, face that exhaust cam contacts with bent axle, the key of bent axle and the cavity of piston.

In such scheme preferably, described upper pump casing is linked together by joint and lower pump body.

In such scheme preferably, the joint of described joint and upper pump casing and lower pump body is provided with seal ring.

In such scheme preferably, be equipped with outlet valve in described right side cavity and left side cavity, outlet valve is resisted against in outlet valve valve seat by oil outlet valve spring.

In such scheme preferably, described right side cavity communicates with filler opening, and left side cavity communicates with oil outlet.

In such scheme preferably, described lower pump body is the housing that inside has cavity, and plunger is placed in the cavity of lower pump body, and the lower end of plunger is provided with roller.

, in the cavity of described lower pump body, oil pump spring is installed in such scheme preferably, and is resisted against the top of the cavity of lower pump body by plunger.

Accompanying drawing explanation

Fig. 1 is the structural representation of the preferred embodiment of oil-way system according to miniature air power engine of the present invention;

Fig. 2 is the sectional view of the preferred embodiment of jerk fuel injection pump in the oil-way system according to miniature air power engine of the present invention.

Attached number in the figure:

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, upwards oil duct 312, 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 is only exemplary and be not 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.

See Fig. 1, (filled arrows direction is the direction that lubricant oil flows to; Hollow arrow direction is parts sense of rotation), it illustrates 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 comprises and is connected jerk fuel injection pump 400 with on crankshaft system 200, utilize the pressure difference of air by the lubricant oil sucking-off in oil sump 317, then spray from oil road 311, and then the cavity of the control system 100 of motor, crankshaft system 200 and piston 18 is lubricated, jerk fuel injection pump 400 is placed in 45 degree of directions with the control system 100 directly over the machine shell of motor.

Next consult Fig. 2, it illustrates the sectional view of a preferred embodiment of jerk fuel injection pump 400 in 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.Right side cavity 421 and left side cavity 422 is provided with in upper pump casing 411; Upper pump casing 411 is linked 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 joint.Be equipped with outlet valve 415 in right side cavity 421 and left side cavity 422, outlet valve 415 is resisted against in 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 having cavity, and plunger 420 is placed 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 (mark) and plug core (mark), plunger bushing is installed on lower pump body 417 also fixing, lower pump body 417 and upper pump casing 411 are sealed connected together by joint 416, and plug core moves up and down under the effect of intake cam 216.When plunger 400 is descending, filler opening 413 is opened, and the lubricant oil in oil sump 317 enters in the cavity 421 of right side, intake cam 216 turns over several angle, plug core is up, and now plunger bushing, plug core top and outlet valve form confined space, and plunger continues up, the lubricating oil pressure of plunger body raises, until after being greater than outlet valve 415 cracking pressure, extruding from oil outlet 412, enter oil road 311 and spray, then intake cam 216 continues to rotate, and enters next circulation.

Composition graphs 1 and Fig. 2 are described in detail oil-way system working condition of the present invention.When motor enter from air-inlet cavity 12 pressurized air start working time, bent axle on crankshaft system 200 rotates counterclockwise, the intake cam 216 that bent axle is connected by key also rotates along with rotating counterclockwise of bent axle, when bent axle turns over 75 degree, lower pump body 417 upper roller 419 of jerk fuel injection pump 400 slides into the basic circle disc of intake cam 216, owing to being provided with oil pump spring 418 in plunger 420, therefore move downward at the elastic force lower plunger 420 of oil pump spring 418, air in upper pump casing 411 is drawn out of, upper pump casing 411 inside produces pressure difference, and then the outlet valve 415 under filler opening 413 presses to the inner chamber of outlet valve valve seat 410, lubricant oil in oil sump 317 flows through filler opening 413 by oil input channel 310 from sucking-off in oil sump 317 and enters in the right side cavity 421 of upper pump casing 411 after fine cleaner 316 removal of impurities.

After intake cam 216 rotates 240 degree, protruding disc on intake cam 216 and roller 419 inconsistent, plunger 420 is moved upward, and oil pump spring 418 is compressed, and the lubricant oil in right side cavity 421 presses to rapidly in the left side cavity 422 of upper pump casing 411 by the extruding force of oil pump spring 418.The outlet valve 415 that the lubricant oil entered in the cavity 422 of left side backs down under oil outlet 412 is opened, and the lubricant oil in left side cavity 422 sprays from oil outlet 412 discharge currents through oil road 311 rapidly.

Lubricant oil in oil road 311 is divided into two-way footpath to circulate: a road is upwards oil duct 312, and another road is crankshaft lubrication oil duct 314.The upwards valve end of oil duct 312 first in lubricating engine control system 100, the lubricant oil come from valve end subordinate enters exhaust rocker arm (mark), flows to exhaust tappet (mark), air inlet tappet (mark), intake cam 216, exhaust cam 215 and air inlet successively subsequently control bearing (mark), gas exhaust inspecting bearing (mark) etc. along exhaust rocker arm.

The oil channel hole of lubricant oil in crankshaft lubrication oil duct 314 in bent axle (mark) enters connecting rod lubrication oil duct 313 pairs of piston rods (mark) and lubricates, and the lubricant oil flowing through piston rod lubricates piston rod and bent axle (mark) surface of contact simultaneously; The piston cavity that the lubricant oil got off from piston rod enters piston 18 is lubricated piston cavity.

After each component lubrication that lubricant oil in oil road 310 flows through upwards oil duct 312 and crankshaft lubrication oil duct 314 pairs of motors completes, final lubricant oil falls in engine body shell (mark), then is got back in oil sump by the return tube 315 of machine shell (mark) bottom.Engine reciprocations rotate time, oil-way system to each parts of motor according to above-mentioned greasing circulating lubrication.

It will be apparent to those skilled in the art that the jerk fuel injection pump of 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 are not 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 each several part be made up of this specification is formed is self-evident.

Claims (7)

1. a jerk fuel injection pump for miniature air power engine, described air-powered motor comprises, control system, oil-way system, crankshaft system, piston, air-inlet cavity and machine 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;
It is characterized in that: in described upper pump casing, be provided with right side cavity and left side cavity, lubricant oil in 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 left side cavity, sprays subsequently from oil road; Described oil road is divided into upwards oil duct and crankshaft lubrication oil duct; Described upwards oil duct flows through valve end in control system, rocking arm, air inlet tappet, exhaust tappet, air inlet controlling rod and gas exhaust inspecting bar; Described crankshaft lubrication oil duct flows through intake cam, face that exhaust cam contacts with bent axle, the key of bent axle and the cavity of piston; Described fine cleaner is arranged in oil sump, and is positioned at the end of oil input channel; Control system directly over the machine shell of jerk fuel injection pump and motor is that 45 degree of directions are placed; Described Injection Pump can be arranged in the different parts of motor.
2. jerk fuel injection pump as claimed in claim 1, is characterized in that: described upper pump casing is linked together by joint and lower pump body.
3. jerk fuel injection pump as claimed in claim 2, is characterized in that: the joint of described joint and upper pump casing and lower pump body is provided with seal ring.
4. jerk fuel injection pump as claimed in claim 1, is characterized in that: be equipped with outlet valve in described right side cavity and left side cavity, outlet valve is resisted against in outlet valve valve seat by oil outlet valve spring.
5. the jerk fuel injection pump as described in claim 1 or 4, is characterized in that: described right side cavity communicates with filler opening, and left side cavity communicates with oil outlet.
6. jerk fuel injection pump as claimed in claim 1 or 2, is characterized in that: described lower pump body is the housing that inside has cavity, and plunger is placed in the cavity of lower pump body, and the lower end of plunger is provided with roller.
7. jerk fuel injection pump as claimed in claim 6, be is characterized in that: be provided with oil pump spring in the cavity of described lower pump body, and is resisted against the top of the cavity of lower pump body by plunger.
CN201310034332.7A 2013-01-30 2013-01-30 The jerk fuel injection pump of miniature air power engine CN103206283B (en)

Priority Applications (1)

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CN201310034332.7A CN103206283B (en) 2013-01-30 2013-01-30 The jerk fuel injection pump of miniature air power engine

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CN201310034332.7A CN103206283B (en) 2013-01-30 2013-01-30 The jerk fuel injection pump of miniature air power engine

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CN103206283A CN103206283A (en) 2013-07-17
CN103206283B true CN103206283B (en) 2015-11-25

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Citations (7)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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

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