CN104819058A - Energy-saving multi-cylinder engine and oil injection method thereof - Google Patents
Energy-saving multi-cylinder engine and oil injection method thereof Download PDFInfo
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- CN104819058A CN104819058A CN201510231553.2A CN201510231553A CN104819058A CN 104819058 A CN104819058 A CN 104819058A CN 201510231553 A CN201510231553 A CN 201510231553A CN 104819058 A CN104819058 A CN 104819058A
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- 238000002347 injection Methods 0.000 title claims abstract description 67
- 239000007924 injection Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000446 fuel Substances 0.000 claims abstract description 68
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 23
- 239000000295 fuel oil Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 5
- 239000004519 grease Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The invention discloses an energy-saving multi-cylinder engine and an oil injection method thereof. The oil injection quantity of at least one cylinder during medium speed to high speed is reduced and meanwhile the oil injection advance angle of the cylinder is reduced. According to the energy-saving multi-cylinder engine and the oil injection method thereof, the oil supply and the oil supply advance angle of at least one cylinder of the engine during idle speed are different from the oil supply and the oil supply time of the cylinder of the engine during medium speed and high speed and accordingly the noise is reduced, the fuel waste is reduced, and emissions are reduced by the scientific, effective and reasonable oil supply method.
Description
Technical field
The present invention relates to the technical field of motor, particularly energy-saving multicylinder engine and fuel injecting method thereof.
Background technique
Motor is that the oil mass supply of being injected by cylinder is many or few, and decide rotating speed height, more accessible fuel feeding maximum speed be also higher.When inject in cylinder oil mass be fixed on one quantitative time, engine speed is fixed in a speed range equally, and when heavy load, engine speed is just at the low spot of its speed range, when heavy load slowly becomes the light hours, engine speed just can reach the high point of this speed range.But during high speed the time of the blast of fuel oil short, often fuel oil does not burn completely, waste fuel oil.
Injection Pump is an important component part in motor car engine.Injection pump assembly is normally installed together the entirety formed by the parts such as Injection Pump and speed regulator.Wherein speed regulator ensures the low-speed running of motor and the restriction to maximum speed, guarantees the parts keeping certain relation between emitted dose and rotating speed.Injection Pump is then the most important parts of motor, is regarded as " heart " parts of motor.
And the vital part of Injection Pump is plunger.Very accurate male part processed by plunger and plunger bushing.Plunger has one tipper with it, the aperture that its upper-end surface has and this tipper communicates, plunger bushing has fuel oil suction port, general fuel oil suction port has two, this fuel oil suction port fuel oil abrim, plunger controls oil inlet quantity by this tipper and its upper-end surface with coordinating of fuel oil suction port.The oil suction of Injection Pump and force feed, come by the to-and-fro motion of plunger in plunger bushing.
When plunger is positioned at lower position, two fuel oil suction ports on plunger bushing are opened, and plunger bushing inner chamber communicates with the oil duct in the pump housing, and fuel oil fills grease chamber rapidly.When on cam top to the roller of the roller body of plunger lower end, plunger just rises.Move upward between from plunger oilhole blocked by its upper end face before till.Within this period of time, due to the motion of plunger, fuel oil is extruded from grease chamber, flows to oil duct and enters plunger bushing inner chamber, and this process is oil-feed process.
When oilhole blocks by plunger, just start force feed process, plunger is up, and in grease chamber, oil pressure sharply raises.When pressure exceedes the oil pressure sum in the spring force of outlet valve and top oil pipe, just back down outlet valve, oil sprayer delivered to by fuel oil press-in oil pipe.Oil inlet hole wherein on plunger bushing is called the theoretical commencement of fuel supply by the moment that its upper end face is blocked completely.When plunger continues to move upward, fuel feeding also continues always, when force feed process lasts meets to the spiral inclination groove on plunger and plunger bushing fuel oil inlet hole, when oilhole one is opened, the little aperture tipper of high pressure oil from grease chamber through its upper end face refluxes to fuel oil inlet hole and the oil duct flowed back in the pump housing.Now the oil pressure of plunger bushing grease chamber reduces rapidly, and the effect of outlet valve oil pressure in spring and high-pressure oil pipe is fallen back valve seat, and oil sprayer stops oil spout immediately.Although at this moment plunger still continues up, fuel feeding stops.On plunger bushing, spill port is called theoretical fuel delivery end by the moment that plunger hypotenuse is opened.From above-mentioned oil suction and force feed process, in the whole process that plunger moves upward, just, LAP is only force feed process, this one stroke is called the effective travel of plunger, and this effective travel depends on the distance of its upper end face to inclined position groove immediately below it, and the theoretical commencement of fuel supply then depends on the position in its upper end face.
In prior art, as shown in Figure 1, the upper-end surface 10 of each injection pump plunger of motor is horizontal plane, or as shown in Figure 2, upper-end surface 10 is acclivitous by idle speed zone to high velocity B, and idling is consistent with inclination angle, high speed district.And the present inventor finds in the work of long campaigns vehicle maintenance, maintenance, when engine speed is higher, oil inflame is more insufficient, particularly, motor middling speed running and when running up fuel delivery often occur for be greater than need situation, when running up, supply-demand difference can be more serious, and unnecessary fuel feeding causes waste, if things go on like this, waste is accumulated over a long period, very seriously.And when high speed, each oil supply cylinder amount of existing motor and supply time are consistent, and simply ask larger injection advance angle most, in fact and not exclusively rationally, except causing larger noise, also can increase oil consumption.
Given this, the present inventor develops energy-saving multicylinder engine and fuel injecting method thereof for this reason, effectively solves the problems referred to above, and this case produces thus.
Summary of the invention
Energy-saving multicylinder engine provided by the invention and fuel injecting method thereof, along with the raising of engine speed, have a cylinder at least in middling speed to this section of high speed, reduce oil inlet quantity simultaneously and delay supply time, make the fuel feeding of motor more reasonable, reduce the waste of fuel oil, realize energy-saving and emission-reduction.
To achieve these goals, technological scheme of the present invention is as follows:
The fuel injecting method of energy-saving multicylinder engine, has at least a cylinder to reduce to fuel injection quantity during high speed in middling speed, reduces the injection advance angle of this cylinder simultaneously.
Further, have at least a cylinder to reduce to fuel injection quantity during high speed in middling speed compared to other cylinders, reduce the injection advance angle of this cylinder simultaneously, the cylinder that fuel injection quantity reduces and injection advance angle reduces is for improving cylinder, cylinder based on other cylinders.
Described improvement cylinder reduces 5%-15% to fuel injection quantity during high speed in middling speed on the basis of basic cylinder, reduces 5%-15% in middling speed to injection advance angle during high speed on the basis of basic cylinder.
Described improvement cylinder is identical with the basic cylinder end of injection time.
Described multicylinder engine has the improvement cylinder of more than 2, and the value that each improvement cylinder fuel injection quantity reduces and injection advance angle reduces is different.
Described multicylinder engine is alternatingly arranged with basic cylinder and improves cylinder.
Energy-saving multicylinder engine, has the upper-end surface of the injection pump plunger of a cylinder at least at the inclination angle of middling speed district to high velocity lower than the inclination angle of idle speed zone.
Further, its each injection pump plunger comprises basic plunger and at least one improves plunger, and the angle that the upper-end surface of improving plunger in middling speed district to high velocity and plunger transverse section is reduces along the direction that tipper tilts on the basis of basic plunger.
The angle that the upper-end surface of described improvement plunger reduces in middling speed district to high velocity changes within the scope of 1-20 degree.
Described multicylinder engine has two or more and improves plunger, and middling speed district, each improvement its upper end face is different to the angle decreasing value of high velocity.
Described multicylinder engine is alternatingly arranged with basic plunger according to cylinder number and improves plunger.
Adopt after such scheme, motor of the present invention has at least cylinder fuel feeding when idling the same, when middling speed and high speed fuel feeding and supply time different.Find after overtesting, if light reduces fuel delivery and asynchronously reduce fuel supply advance angle, so the fuel feeding end time will shift to an earlier date, the pressure maximum that blast produces also will by too much in advance, although still can fuel-economizing, but oil-saving effect does not reduce the good of fuel supply advance angle simultaneously, and therefore noise is also lower owing to reducing fuel supply advance angle.The present invention is by science more, fuel supply method effectively and reasonably, and reduce noise, reduce fuel oil waste, emissions reduction, can be about 25%-35% by saving fuel oil.
Accompanying drawing explanation
Structural representation when Fig. 1 is prior art its upper end face level;
Fig. 2 is the structural representation that prior art its upper end tilts towards direction, the upper right corner;
Fig. 3 is the schematic diagram of the present embodiment method;
Fig. 4 is the structural representation one that the present embodiment improves plunger;
Fig. 5 is the structural representation two that the present embodiment improves plunger.
Label declaration
Upper-end surface 10;
Upper-end surface 1, tipper 2.
Embodiment
In order to explain technological scheme of the present invention further, below by specific embodiment, the present invention will be described in detail.
The fuel injecting method of the energy-saving multicylinder engine that the present invention discloses, a cylinder is had at least to reduce to fuel injection quantity during high speed in middling speed, reduce the injection advance angle of this cylinder simultaneously, therefore make motor have at least a cylinder when idling fuel feeding and fuel supply advance angle and when middling speed and high speed fuel feeding and supply time different, by science more, fuel supply method effectively and reasonably, reduce noise, reduce fuel oil waste, decrease discharge.。
Why the present invention reduces fuel delivery simultaneously and reduces fuel supply advance angle, because find after overtesting, if light reduces fuel delivery and asynchronously reduce fuel supply advance angle, so the fuel feeding end time will shift to an earlier date, the pressure maximum that blast produces also will by advance too much, although still can fuel-economizing, oil-saving effect have of the present invention good, fuel-economizing of the present invention can reach 25%-35%, overall a little more than the fuel-economizing amount only reducing fuel supply advance angle.And owing to reducing fuel supply advance angle, therefore noise is also lower.
As optimization, this multicylinder engine has at least a cylinder to reduce to fuel injection quantity during high speed in middling speed compared to other cylinders, and reduces the injection advance angle of this cylinder simultaneously, and namely same motor exists two kinds of different injection modes when middling speed and high speed.Fuel injection quantity reduce and injection advance angle reduce cylinder for improve cylinder, cylinder based on other cylinders, basic cylinder for distinguishing improvement cylinder, and as improvement cylinder basis.As shown in Figure 3, the injection advance angle of cylinder based on β angle, θ angle is the injection advance angle improving cylinder.
The each cylinder of the present embodiment fuel feeding when idling is the same, improve cylinder then when middling speed and high speed fuel feeding and supply time different with basic hilllock, improve cylinder relative to the not only fuel delivery minimizing of basic hilllock, and fuel supply advance angle also reduces simultaneously.
Wherein improve cylinder and on the basis of basic cylinder, reduce 5%-15% to fuel injection quantity when high speed in middling speed, on the basis of basic cylinder, reduce 5%-15% to injection advance angle when high speed in middling speed, concrete value need be determined according to the motor of different model.
In order to ensure that the end of injection time can be consistent, not changing the position of explosion pressure maximum point, improving cylinder identical with the basic cylinder end of injection time.
In order to make fuel-economizing better effects if, injection mode is more reasonable, and multicylinder engine is furnished with plural improvement cylinder, and the value that each improvement cylinder fuel injection quantity reduces and injection advance angle reduces is different.Or multicylinder engine is alternatingly arranged with basic cylinder according to cylinder number and improves cylinder.
As illustrated in figures 4-5, it is the injection pump plunger of the energy-saving multicylinder engine that the present invention discloses, has the upper-end surface of the injection pump plunger of a cylinder at least at the inclination angle of middling speed district to high velocity lower than the inclination angle of idle speed zone, namely make to have at least a cylinder to reduce to fuel injection quantity during high speed in middling speed, reduce the injection advance angle of this cylinder simultaneously.
As optimization, its each injection pump plunger comprises basic plunger and at least one improves plunger.The angle that the upper-end surface 1 of improving plunger at middling speed district to high velocity the region of A to B (in the figure) with plunger transverse section is, (in figure dotted line position) tilts along tipper 2 on the basis of basic plunger direction (direction that in figure, the CD alignment lower right corner tilts) reduces α angle, and namely same motor exists two kinds of different injection modes when middling speed and high speed.Same basic plunger is for distinguishing improvement plunger, and as improving the basis of plunger, basic plunger can be the plunger that the inclination angle of middling speed district to high velocity is constant or reduce.
Between AB to CD, the perpendicular distance of each point decreases relative to original distance (being the perpendicular distance of dotted line to CD line each point originally) as can be seen from Figure, therefore oil-feed stroke is relative to originally also shortening thereupon, nature fuel delivery, relative to originally also reducing, therefore avoids too much fuel oil and enters engine chamber.
And because AB line is relative to original decline, therefore the elapsed time of oil-feed is delayed, namely injection advance angle reduces, but the time that fuel feeding terminates does not change (CD line is constant), therefore the change in location of fuel oil explosion time pressure maximum is also little, motor still has powerful power, and due to injection advance angle reduction, the noise therefore produced is also less.
The concrete angle value α that wherein its upper end face 1 reduces determines according to different motors, and generally within the scope of 1-20 degree, change can reach requirement.
In order to make fuel-economizing better effects if, injection mode is more reasonable, and the Injection Pump on multicylinder engine is furnished with the improvement plunger of more than 2, and middling speed district, each improvement its upper end face is different to the angle decreasing value α of high velocity.Or multicylinder engine is alternatingly arranged with basic plunger and improves plunger.
The multicylinder engine of employing the present embodiment can fuel-economizing 25%-35%.
The present invention adopts Liu Te supernatural power board truck to test.Liu Te supernatural power board truck is mounted with CA6DF Wuxi diesel engine, load-carrying gross mass 20 tons, new car fuel consumption per hundred kilometers 24L, 8 years used car fuel consumption per hundred kilometers 25L.First carry out improvement of the present invention to its motor, its motor be alternatingly arranged with basic cylinder and improve cylinder, the fuel injection quantity improving cylinder reduces 10% than basic cylinder, and injection advance angle reduces 10%.After test, with before improvement under identical operating mode, new car fuel consumption per hundred kilometers is 17L, fuel-economizing 29%, and the fuel consumption per hundred kilometers of 8 years used cars is 18L, fuel-economizing 28%.
These are only preferred embodiment of the present invention, the restriction not to protection scope of the present invention.All equivalent variations done according to the mentality of designing of this case, all fall into the protection domain of this case.
Claims (11)
1. the fuel injecting method of energy-saving multicylinder engine, is characterized in that: have at least a cylinder to reduce to fuel injection quantity during high speed in middling speed, reduce the injection advance angle of this cylinder simultaneously.
2. the fuel injecting method of energy-saving multicylinder engine as claimed in claim 1, it is characterized in that: have at least a cylinder to reduce to fuel injection quantity during high speed in middling speed compared to other cylinders, reduce the injection advance angle of this cylinder simultaneously, the cylinder that fuel injection quantity reduces and injection advance angle reduces is for improving cylinder, cylinder based on other cylinders.
3. the fuel injecting method of energy-saving multicylinder engine as claimed in claim 2, it is characterized in that: described improvement cylinder reduces 5%-15% to fuel injection quantity during high speed in middling speed on the basis of basic cylinder, reduces 5%-15% in middling speed to injection advance angle during high speed on the basis of basic cylinder.
4. the fuel injecting method of energy-saving multicylinder engine as claimed in claim 2, is characterized in that: described improvement cylinder is identical with the basic cylinder end of injection time.
5. the fuel injecting method of energy-saving multicylinder engine as claimed in claim 2, is characterized in that: described multicylinder engine has the improvement cylinder of more than 2, and the value that each improvement cylinder fuel injection quantity reduces and injection advance angle reduces is different.
6. the fuel injecting method of energy-saving multicylinder engine as claimed in claim 2, is characterized in that: described multicylinder engine is alternatingly arranged with basic cylinder and improves cylinder.
7. energy-saving multicylinder engine, is characterized in that: have the upper-end surface of the injection pump plunger of a cylinder at least at the inclination angle of middling speed district to high velocity lower than the inclination angle of idle speed zone.
8. energy-saving multicylinder engine as claimed in claim 7, it is characterized in that: its each injection pump plunger comprises basic plunger and at least one improves plunger, the angle that the upper-end surface of improving plunger in middling speed district to high velocity and plunger transverse section is reduces along the direction that tipper tilts on the basis of basic plunger.
9. energy-saving multicylinder engine as claimed in claim 8, is characterized in that: the angle that the upper-end surface of described improvement plunger reduces in middling speed district to high velocity changes within the scope of 1-20 degree.
10. energy-saving multicylinder engine as claimed in claim 8, is characterized in that: described multicylinder engine has two or more and improves plunger, and middling speed district, each improvement its upper end face is different to the angle decreasing value of high velocity.
11. energy-saving multicylinder engines as claimed in claim 8, is characterized in that: described multicylinder engine is alternatingly arranged with basic plunger according to cylinder number and improves plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510231553.2A CN104819058A (en) | 2015-05-08 | 2015-05-08 | Energy-saving multi-cylinder engine and oil injection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510231553.2A CN104819058A (en) | 2015-05-08 | 2015-05-08 | Energy-saving multi-cylinder engine and oil injection method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3332470A1 (en) * | 1982-09-08 | 1984-03-08 | Steyr-Daimler-Puch AG, 1011 Wien | Piston injection pump with helix control, especially for diesel engines |
| US5591021A (en) * | 1994-11-22 | 1997-01-07 | Robert Bosch Gmbh | Fuel-injection pump for internal combustion engines |
| WO2004092559A1 (en) * | 2003-04-14 | 2004-10-28 | Yanmar Co., Ltd. | Cotrol mechanism for fuel injection pump |
| 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 |
| CN104061099A (en) * | 2014-06-25 | 2014-09-24 | 洪宝童 | Energy-saving engine fuel injection pump plunger |
| CN204610043U (en) * | 2015-05-08 | 2015-09-02 | 洪宝童 | Energy-saving multicylinder engine |
-
2015
- 2015-05-08 CN CN201510231553.2A patent/CN104819058A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3332470A1 (en) * | 1982-09-08 | 1984-03-08 | Steyr-Daimler-Puch AG, 1011 Wien | Piston injection pump with helix control, especially for diesel engines |
| US5591021A (en) * | 1994-11-22 | 1997-01-07 | Robert Bosch Gmbh | Fuel-injection pump for internal combustion engines |
| WO2004092559A1 (en) * | 2003-04-14 | 2004-10-28 | Yanmar Co., Ltd. | Cotrol mechanism for fuel injection pump |
| 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 |
| CN104061099A (en) * | 2014-06-25 | 2014-09-24 | 洪宝童 | Energy-saving engine fuel injection pump plunger |
| CN204610043U (en) * | 2015-05-08 | 2015-09-02 | 洪宝童 | Energy-saving multicylinder engine |
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Application publication date: 20150805 |
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