CN101451455B - Electronic control cylinder fuel-injection pump system - Google Patents
Electronic control cylinder fuel-injection pump system Download PDFInfo
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- CN101451455B CN101451455B CN2007101686583A CN200710168658A CN101451455B CN 101451455 B CN101451455 B CN 101451455B CN 2007101686583 A CN2007101686583 A CN 2007101686583A CN 200710168658 A CN200710168658 A CN 200710168658A CN 101451455 B CN101451455 B CN 101451455B
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Abstract
The present invention relates to a electric-controlled air cylinder fuel-injection pump system of marine vehicle low speed two-stroke crosshead type diesel wherein the electric-controlled air cylinder fuel-injection pump system includes a plunger piston oil pump type oil feeders (1) including three to six oiling unit, a stepping motor (4) connects with the oil feeders (1) through a flange, and a controller (14) used to control the stepping motor (4). Therefore the present invention is provided with the following advantages: 1. convenient usage, low cost and easy of promotion; 2. simple structure, reliable, and durable with long service life; 3. can realize quantitative high-pressure and timing oiling; 4. reasonable and ingenious design, can efficiently utilize lubricant oil, save energy, and reduce nocuousness discharge and operation cost.
Description
Technical field
The present invention relates to a kind of electronic control cylinder fuel-injection pump system that is used for marine low speed two-stroke crosshead diesel engine.
Background technique
In the present technology, large-scale marine low speed diesel engine generally all adopts the cross-type two-stroke diesel diesel engine.In low speed two-stroke crosshead diesel engine, upper rack all is provided with diaphragm and piston rod stuffing box separates cylinder and crank box, and such structural feature has determined the lubricated necessary cylinder lubricator system that adopts between piston set and the cylinder liner.
Guarantee the normal operation of boat diesel engine, accurate, stable, lubricated reliably to cylinder is crucial.The effect of cylinder lubrication has: 1 guarantees lubricating between cylinder liner and the piston set, forms oil film in the metal surface; 2 take away impurity such as combustion residue and metal worn particle; 3 help sealed combustion chamber space etc.
Former mechanical type oil gun is by sprocket driving, and the camshaft that drives oil gun rotates, and it is reciprocating to push small plunger by cam, and its pump oil frequency and engine speed are synchronous.Its oil filling amount is regulated the main plunger stroke that relies on each oiling junior unit of manual tune, and with the linear relationship that is varied to of engine speed, and do not have direct relation with the load of motor, when therefore turning round under off rating, the cylinder oil oil consumption rate will increase greatly.
Cylinder oil oiling selection regularly is the essential condition that guarantees the cylinder good lubrication.It has been generally acknowledged that, when oiling regularly is chosen in piston stroking upward, cylinder oil is injected between the ring belt, the most favourable to cylinder lubrication.Mechanical type oil gun originally is owing to the system architecture reason, and oiling pressure is low, has only when oil gun outer pipe internal pressure during greater than inner pressure of air cylinder, and cylinder oil just can inject in the cylinder.This just is difficult to realize accurately, regularly oiling.Machine driven system also can regularly produce inevitable uncertainty to oiling in addition.Former mechanical type oil gun is because oiling pressure is low, the oiling time is long, hang oilcloth oil when relying on piston ring to slip over the cylinder oil groove, and a large amount of oil is scraped scavenging air box by piston ring when descending and slatterns, for guaranteeing the sufficient lubrication of cylinder and piston ring, the oil filling amount of just having to strengthen, thereby the waste and the environmental pollution that have further strengthened cylinder lubricating oil.The cylinder oil consumption costs accounts for about 70% of marine main engine piston set and cylinder group maintenance expense greatly.Therefore, save the cylinder oil consumption, not only help energy-conservation, also to reducing the meaning that shipping transport cost and noxious emission have particular importance.
Summary of the invention
The present invention solves technical problems such as the existing very difficult realization accurate quantification of existing machinery formula oil gun, timing oiling; A kind of electronic control cylinder fuel-injection pump system that can realize accurate quantification, timing oiling is provided.
The present invention has also solved the low and oiling frequency of mechanical type oil gun oiling pressure can not change the problem of regulating with diesel engine condition; Provide a kind of simple in structure, can not cause lubricant oil to be wasted in a large number, electronic control cylinder fuel-injection pump system with low cost.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
Electronic control cylinder fuel-injection pump system, comprise a plunger-type fuel pump formula oil gun that includes an above oiling unit at least, it is characterized in that it also includes at least one stepper motor that links to each other with oil gun by flange, and the controller that is used for the control step motor rotation.
The deficiency that The present invention be directed to former mechanical type oil gun is carried out great inventive improvements.Oiling device than this invention of former mechanical type oil gun is to be the lubricating oil ejecting system through optimizing of core with the multiple-unit plunger pump, adopt step motor drive, its structure is simpler, oiling pressure height, arrangement is got up more flexible, and good self-cleaning net work energy is arranged.
At above-mentioned electronic control cylinder fuel-injection pump system, described oiling unit includes the cylinder body of plunger cylinder and an end communicates with cylinder body and the other end is connected with the oil pipe of nozzle, cylinder body one end is provided with by the draining valve spring it is pressed on draining valve on the cylinder body oil extraction valve seat, be provided with the plunger that can in cylinder body, slide up and down in the cylinder body, the roller of plunger by being located at its underpart contacts with cam below the cylinder body, described plunger is provided with Returnning spring, and side of cylinder block is provided with inlet port.
At above-mentioned electronic control cylinder fuel-injection pump system, described cam is fixed on the camshaft, and the cam profile of the cam of oiling unit is identical, and the cam orientation all is positioned at same direction.
Therefore, the present invention has following advantage: 1. and easy to use, with low cost, be easy to promote; 2. simple in structure, reliable, durable, long service life; 3. can realize quantitatively, high pressure, regularly oiling; 4. reasonable in design, ingenious, can effectively utilize lubricant oil, energy saving lowers noxious emission and operation cost.
Description of drawings
Fig. 1 is a kind of fundamental diagram of the present invention;
Fig. 2 is the structural representation of an oiling unit among Fig. 1;
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technological scheme of the present invention is described in further detail.
Among the figure, oil gun 1, stepper motor 4, cylinder body 5, nozzle 6, oil pipe 7, draining valve 8, plunger 9, roller 10, cam 11, inlet port 12, camshaft 13, controller 14, draining valve spring 15, Returnning spring 17.
Embodiment:
This electronic control cylinder fuel-injection pump system example is a system that comprises that stepper motor 4 that oil gun 1, link to each other with oil gun 1 by connection set and the controller 14 that is used for 4 runnings of control step motor are formed.
The oiling unit comprises the cylinder body 5 of plunger cylinder and an end communicates with cylinder body 5 and the other end is connected with the oil pipe 7 of nozzle 6, cylinder body 5 one ends are provided with by draining valve spring 15 it are pressed on draining valve 8 on the cylinder body 5 oil extraction valve seats, it in the cylinder body 5 plunger 9 that can in cylinder body 5, slide up and down, the plunger bottom is provided with roller, and cam 11 lines below roller 10 and the cylinder body 5 contact.Lubricant oil flows out cylinder body 5 through described oil drain out when draining valve 8 is opened, and leads to nozzle 6 through oil pipe 7.Cylinder body 5 sides are provided with inlet port 12, by inlet port 12 to plunger 9 top make-up oils.Cam 11 is made one with camshaft 13, and the cam profile and the cam orientation of the cam of each oiling unit of same oil gun are all identical, and stepper motor 4 is matched with camshaft 13.
In the present embodiment, oil gun has used ripe current techique, and no machinery is in transmission connection between oil gun 1 and the diesel engine, and controller 14 can be from the oiling moment and the oiling frequency of main control oil gun 1.Oil gun controller 14 is according to the control mode of setting, host crankshaft angular signal, engine speed signal from angular encoder, main unit load signal from the load indication sensor, digital signals such as the sulphur content of fuel oil, cylinder sleeve and piston set break-in state, provide best fuel feeding timing and fuel delivery after process is calculated, and then the oil spout frequency of the moment of control step motor 4 actions and oil gun 1 is to realize the accurate injection of cylinder oil.Can also regulate oil filling amount and oiling timing according to operating mode automatic or manual on the man-machine interaction panel of diesel engine as required.In the present embodiment, the cam profile and the cam orientation of each cam 11 of same oil gun are all identical, and no machinery is in transmission connection between oil gun and the diesel engine.
Can select the diameter of different plungers 9 and the stroke of plunger 9 to realize according to the oil filling amount of different model diesel engine.After having selected the main frame model, when plunger 9 rising pump oil, lubricant oil flowed out cylinder body 5 through described oil drain out when draining valve 8 was opened, and led to nozzle 6 through oil pipe 7, by inlet port 12 to plunger 9 top make-up oils.
Should there be the diameter of plunger 9 of its setting and the effective travel of plunger 9 in the oiling unit of optimizing 1, makes each fuel injection quantity for quantitatively.To the different model main frame, configurable one or two oil gun of every cylinder, the oiling unit of each oil gun can be designed to 3 to 6, to satisfy the needs of 4 to 10 oiling points of the every cylinder of present most diesel engine.
During work, come the moment and the frequency of 4 actions of control step motor by controller 14, thereby change the timing and the frequency of oiling unit oil spout, the present invention reaches the purpose of regulating the oiling dose rate with the method that changes the oiling frequency.Change such as setting the moving N of main frame revolution, controller 14 just orders stepper motor 4 to rotate one to be changeed to drive oiling unit oil spout once.That is to say may command stepper motor 4, make it after the moving N of main frame revolution changes, needing the moment action of oil spout, and all the other times are motionless.In the work, there is not the oiling uncertainty regularly that mechanical driving belt comes.And the oiling pressure height of plunger type oil gun has been avoided the influence of cylinder back pressure to the oiling timing.Each oiling has enough dosage, and higher oiling pressure can deliver to desired place to lubricant oil, lubricant oil evenly can be distributed along the cylinder circumference, can not occur along the situation of the local oil starvation of cylinder circumference.
This example utilizes the advantage of electronic control pattern, and its oiling regularly improves greatly, and oiling rate soft readjustment scope increases, and can realize the various control pattern.It can be controlled by selected control mode by factors such as fuel oil sulphur content, engine speed, load variations and break-in states.Just can easily realize different control modes as long as import these variablees at human-computer interaction interface.The controller 14 of oil gun accept from angular encoder host crankshaft angular signal, engine speed signal and from the main unit load signal of load indication sensor and the digital signals such as sulphur content of fuel oil, through providing fuel feeding timing and fuel delivery after calculating, the moment of the speed of control step motor action and the oil spout of oiling unit and frequency are to realize the accurate injection of cylinder oil by selected control mode.Under the prerequisite of lubricant oil better and correct oiling timing along the cylinder circle distribution, the present invention can change the oiling rate by frequency modulation method, avoided (under the frequent operating conditions of boats and ships) the too much waste that causes of lubricant oil supply when off-design behaviour of traditional mechanical formula lubricating fitting, so can save lubricant oil greatly, reduce noxious emission.
Controller is at the enterprising line operate of man-machine interaction panel, and numeral shows very clear, the operation interface close friend, and controller is existing mature technology, can be with reference to China Electronics's electrical equipment net.
In the work, fuel tank provides the cylinder oil of preference temperature, supplies with each oiling unit 1 of oil gun by pipeline.Camshaft 13 is driven by stepper motor 4, drives each cam 11 and rotates.Plunger 9 pushes up through roller 10 during 11 ascent stages at cam, and the active force by Returnning spring 17 is descending when cam 11 descending brancies.Plunger 9 is the oil suction stroke when descending, and the pumping action when lubricating oil relies on oil transfer pump and plunger 9 descending is in inlet port 12 enters oiling unit oil cylinder upper space.Plunger 9 is pump oil stroke when up, and when the top edge sealing inlet port 12 of plunger 9, the spaces above the plunger 9 become an enclosed space, and the lubricating oil the oiling unit in is compressed and the pressure rising.When oil pressure is elevated to a certain degree, overcome the elastic force of draining valve spring 15 and the residual pressure in the oil pipe 7 and open draining valve 8, lubricating oil injects cylinder of diesel engine through oil pipe 7 from nozzle 6 from the draining valve 8 on plunger 9 tops.
Oiling is regularly based on two signals that transmit from the crank angle encoder, and one is the top dead center signal of this cylinder, and another is the crankshaft rotational speed sensor signal.The oil gun control unit accept from angular encoder host crankshaft angular signal, engine speed signal and from the main unit load signal of load indication sensor and the digital signals such as sulphur content of fuel oil, according to the control mode of setting, through providing fuel feeding timing and fuel feeding frequency after calculating, the control step motor action is to realize the accurate injection of cylinder oil.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute with reference to described specific embodiment, being applied to the diesel engine of concrete model, but can't departing from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as oil gun 1, stepper motor 4, cylinder body 5, nozzle 6, oil pipe 7, draining valve 8, plunger 9, roller 10, cam 11, inlet port 12, camshaft 13, controller 14, draining valve spring 15, Returnning spring 17 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It is construed to any additional restriction all is contrary with spirit of the present invention.
Claims (1)
1. electronic control cylinder fuel-injection pump system, comprise the plunger-type fuel pump formula oil gun (1) that comprises 3 to 6 oiling unit, it is characterized in that, it also is provided with the stepper motor (4) that links to each other with oil gun (1) by flange, and the controller (14) that is used for control step motor (4) running, described oiling unit includes the cylinder body (5) of plunger cylinder and an end communicates with cylinder body (5) and the other end is connected with the oil pipe (7) of nozzle (6), cylinder body (5) one ends are provided with by draining valve spring (15) it are pressed on draining valve (8) on cylinder body (5) the oil extraction valve seat, be provided with the plunger (9) that can in cylinder body (5), slide up and down in the cylinder body (5), the roller (10) of plunger (9) by being located at its underpart contacts with cam (11) below the cylinder body (5), described plunger (9) is provided with Returnning spring (17), cylinder body (5) side is provided with inlet port (12), described cam (11) is fixed on the camshaft (13), the cam profile of the cam of oiling unit (11) is identical, and the cam orientation all is positioned at same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101686583A CN101451455B (en) | 2007-12-07 | 2007-12-07 | Electronic control cylinder fuel-injection pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101686583A CN101451455B (en) | 2007-12-07 | 2007-12-07 | Electronic control cylinder fuel-injection pump system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101451455A CN101451455A (en) | 2009-06-10 |
| CN101451455B true CN101451455B (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101686583A Expired - Fee Related CN101451455B (en) | 2007-12-07 | 2007-12-07 | Electronic control cylinder fuel-injection pump system |
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| Country | Link |
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| CN (1) | CN101451455B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110370B (en) * | 2014-07-02 | 2016-08-10 | 武汉理工大学 | Automatically controlled filling pump cylinder lubricating system |
| CN206769974U (en) * | 2017-05-31 | 2017-12-19 | 广船国际有限公司 | A kind of ship oil system and diesel generating set |
| CN113359562B (en) * | 2021-06-18 | 2022-06-03 | 功力机器有限公司 | Intelligent motor lubricating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030280A (en) * | 1987-06-25 | 1989-01-11 | 曼·B及W柴油机公司 | Be used for the particularly jerk pump of marine diesel engine of internal-combustion engine |
| CN2231720Y (en) * | 1995-11-02 | 1996-07-24 | 郭宝权 | Multi-point dry-oil automatic lubricating pump |
| CN2274154Y (en) * | 1996-09-28 | 1998-02-11 | 上海五丰电液成套工程有限公司 | Concentrated lubricating device for chassis of automobile |
| CN1875170A (en) * | 2003-10-28 | 2006-12-06 | 汉斯延森润滑油有限公司 | Centralised lubrication of large diesel engines |
-
2007
- 2007-12-07 CN CN2007101686583A patent/CN101451455B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030280A (en) * | 1987-06-25 | 1989-01-11 | 曼·B及W柴油机公司 | Be used for the particularly jerk pump of marine diesel engine of internal-combustion engine |
| CN2231720Y (en) * | 1995-11-02 | 1996-07-24 | 郭宝权 | Multi-point dry-oil automatic lubricating pump |
| CN2274154Y (en) * | 1996-09-28 | 1998-02-11 | 上海五丰电液成套工程有限公司 | Concentrated lubricating device for chassis of automobile |
| CN1875170A (en) * | 2003-10-28 | 2006-12-06 | 汉斯延森润滑油有限公司 | Centralised lubrication of large diesel engines |
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| Publication number | Publication date |
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| CN101451455A (en) | 2009-06-10 |
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Granted publication date: 20110810 Termination date: 20171207 |