CN102352807A - Fuel oil filtration structure of metering valve - Google Patents
Fuel oil filtration structure of metering valve Download PDFInfo
- Publication number
- CN102352807A CN102352807A CN2011103488973A CN201110348897A CN102352807A CN 102352807 A CN102352807 A CN 102352807A CN 2011103488973 A CN2011103488973 A CN 2011103488973A CN 201110348897 A CN201110348897 A CN 201110348897A CN 102352807 A CN102352807 A CN 102352807A
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- fuel oil
- metering valve
- pressure
- fuel
- electronic control
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Abstract
The invention provides a fuel oil filtration structure of a metering valve and is used for solving the problems that in the prior art, fuel oil of an electronic control fuel oil sprayer directly enters the metering valve from a high-pressure oil duct of a fuel oil sprayer body, and is not subjected to fine filtration, and fine impurities in the unfiltered fuel oil possibly lead to poor seal of the high-pressure chamber of the electronic control fuel oil sprayer, or lead to inaccurate action response, and finally cause the inaccurate control of the fuel oil injection quantity and the like. According to the fuel oil filtration structure of the metering valve provided by the invention, a fuel oil filtering core is arranged at the connection of the high-pressure oil duct of the fuel oil sprayer body and the metering valve; before the high-pressure fuel oil flow enters the metering valve, the fuel oil is filtered again through the fuel oil filtering core, thus the fuel oil is cleaner, the accuracy of the fuel oil pressure control in a metering valve chamber of the electronic control fuel oil sprayer is ensured, the accuracy of action response of each component of the electronic control fuel oil sprayer is ensured, and the use performance and reliability of the electronic control fuel oil sprayer are improved.
Description
Technical field
The present invention relates to a kind of control fuel injection technology, specially refer to a kind of electronic fuel injection device metering valve fuel oil filtration.
Background technique
Along with increasingly high, to the critical component of motor to engine energy-saving, environmental protection requirement---the control of electronic fuel injection device fuel injection amount requires also increasingly high.The basic principle of electronic fuel injection device is the emitted dose through the fuel pressure control fuel oil in the control metering valve chamber; And in order to guarantee accurate control, electronic fuel injection device structure is comparatively complicated; The component of its control section are very accurate; Small amount of impurities in the fuel oil all will cause the control of the fuel pressure in the electronic fuel injection device metering valve chamber bad, perhaps causes the action response of electronic fuel injection device part component inaccurate, finally causes the control of fuel injection amount inaccurate.
The fuel oil of existing technology electronic fuel injection device directly gets into metering valve by high-pressure oil duct, does not filter.Though fuel oil has passed through the thick smart double-filtration of diesel engine when getting into oil sprayer; But still the not enough fine impurities of filtering; After fuel oil gets into metering valve; The impurity that does not filter out in the fuel oil causes the control of the fuel pressure in the electronic fuel injection device metering valve chamber inaccurate probably, perhaps causes the action response of electronic fuel injection device part component inaccurate, finally causes the control of fuel injection amount inaccurate.
Summary of the invention
Directly get into metering valve for solving existing technology electronic fuel injection device fuel oil by the oil injector body high-pressure oil duct; Do not carry out fine filtering; The fine impurities that does not filter out in the fuel oil causes the sealing of electronic fuel injection device hyperbaric chamber bad probably; Perhaps cause action response inaccurate, finally cause problems such as the control of fuel injection amount is inaccurate, the present invention proposes a kind of metering valve fuel oil filtration.Metering valve fuel oil filtration of the present invention is provided with fuel oil in the joint of oil injector body high-pressure oil duct and metering valve and crosses filter core.
Further, to cross the outer shape of filter core be cylindrical or cylindrical for the cylinder step to the fuel oil of metering valve fuel oil filtration of the present invention.
The useful technique effect of metering valve fuel oil filtration of the present invention is to utilize high pressure fuel stream before getting into metering valve; Through fuel oil fitering element fuel oil is filtered once more; Fuel oil is cleaned, totally more; Guarantee the accuracy of the fuel pressure control in the electronic fuel injection device metering valve chamber, guaranteed the accuracy of the action response of each component of electronic fuel injection device, improved the usability and the reliability of electronic fuel injection device.
Description of drawings
Accompanying drawing 1 is an existing technology electronic fuel injection general ability portion cross-sectional schematic;
Accompanying drawing 2 is the cross-sectional schematic of metering valve fuel oil filtration specific embodiment 1 of the present invention;
Accompanying drawing 3 is crossed the front elevational schematic of filter core for the fuel oil of metering valve fuel oil filtration specific embodiment 1 of the present invention;
Accompanying drawing 4 is the cross-sectional schematic of metering valve fuel oil filtration specific embodiment 2 of the present invention;
Accompanying drawing 5 is crossed the front elevational schematic of filter core for the fuel oil of metering valve fuel oil filtration specific embodiment 2 of the present invention.
Below in conjunction with accompanying drawing and specific embodiment metering valve fuel oil filtration of the present invention is further described.
Embodiment
Accompanying drawing 2 is the cross-sectional schematic of metering valve fuel oil filtration specific embodiment 1 of the present invention, and accompanying drawing 3 is crossed the front elevational schematic of filter core for the fuel oil of metering valve fuel oil filtration specific embodiment 1 of the present invention, among the figure; 1 is metering valve; 2 is oil injector body, and 3 is high-pressure oil duct, and 4 cross filter core for fuel oil.Can know that by figure metering valve fuel oil filtration of the present invention is provided with fuel oil in the joint of oil injector body high-pressure oil duct and metering valve and crosses filter core.In the present embodiment, the outer shape that fuel oil is crossed filter core cylindrical for for the cylinder step, i.e. different two cylindrical the overlaping of diameter.
Accompanying drawing 4 is the cross-sectional schematic of metering valve fuel oil filtration specific embodiment 2 of the present invention, and accompanying drawing 5 is crossed the front elevational schematic of filter core for the fuel oil of metering valve fuel oil filtration specific embodiment 2 of the present invention, among the figure; 1 is metering valve; 2 is oil injector body, and 3 is high-pressure oil duct, and 4 cross filter core for fuel oil.Can know that by figure for adapting to the electronic fuel injection device of different structure, the fuel oil of metering valve fuel oil filtration of the present invention is crossed filter core and can be taken different shapes.In the present embodiment, the fuel oil outer shape of crossing filter core just is designed to cylindrical.But fuel oil is crossed the joint that filter core all should be arranged on oil injector body high-pressure oil duct and metering valve.
Obviously; Fuel oil with certain pressure is crossed filter core through fuel oil and is had filtering effect preferably; The useful technique effect of metering valve fuel oil filtration of the present invention is to utilize high pressure fuel stream before getting into metering valve; Through fuel oil fitering element fuel oil is filtered once more, fuel oil is cleaned, totally more, guaranteed the accuracy of the fuel pressure control in the electronic fuel injection device metering valve chamber; Guarantee the accuracy of the action response of each component of electronic fuel injection device, improved the usability and the reliability of electronic fuel injection device.
Claims (2)
1. a metering valve fuel oil filtration is characterized in that: be provided with fuel oil in the joint of oil injector body high-pressure oil duct and metering valve and cross filter core.
2. according to the said metering valve fuel oil of claim 1 filtration, it is characterized in that: the outer shape that fuel oil is crossed filter core is cylindrical or cylindrical for the cylinder step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103488973A CN102352807A (en) | 2011-11-08 | 2011-11-08 | Fuel oil filtration structure of metering valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103488973A CN102352807A (en) | 2011-11-08 | 2011-11-08 | Fuel oil filtration structure of metering valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102352807A true CN102352807A (en) | 2012-02-15 |
Family
ID=45576436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103488973A Pending CN102352807A (en) | 2011-11-08 | 2011-11-08 | Fuel oil filtration structure of metering valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102352807A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106414990A (en) * | 2014-05-01 | 2017-02-15 | 德尔福国际业务卢森堡公司 | Fuel injector filter |
| CN106414989A (en) * | 2014-05-01 | 2017-02-15 | 德尔福国际业务卢森堡公司 | Fuel injector filter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455847A (en) * | 2001-02-28 | 2003-11-12 | 罗伯特·博施有限公司 | Fuel injection valve |
| CN1831320A (en) * | 2005-03-09 | 2006-09-13 | 株式会社电装 | Fluid injection valve |
| CN1880753A (en) * | 2005-06-17 | 2006-12-20 | 玛涅蒂玛瑞利动力系公开有限公司 | Fuel injector |
| US20090134246A1 (en) * | 2007-11-16 | 2009-05-28 | Michael Peter Cooke | Fuel injector |
| US20100313850A1 (en) * | 2007-11-02 | 2010-12-16 | Denso Corporation | Fuel injection valve and fuel injection device |
-
2011
- 2011-11-08 CN CN2011103488973A patent/CN102352807A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455847A (en) * | 2001-02-28 | 2003-11-12 | 罗伯特·博施有限公司 | Fuel injection valve |
| CN1831320A (en) * | 2005-03-09 | 2006-09-13 | 株式会社电装 | Fluid injection valve |
| CN1880753A (en) * | 2005-06-17 | 2006-12-20 | 玛涅蒂玛瑞利动力系公开有限公司 | Fuel injector |
| US20100313850A1 (en) * | 2007-11-02 | 2010-12-16 | Denso Corporation | Fuel injection valve and fuel injection device |
| US20090134246A1 (en) * | 2007-11-16 | 2009-05-28 | Michael Peter Cooke | Fuel injector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106414990A (en) * | 2014-05-01 | 2017-02-15 | 德尔福国际业务卢森堡公司 | Fuel injector filter |
| CN106414989A (en) * | 2014-05-01 | 2017-02-15 | 德尔福国际业务卢森堡公司 | Fuel injector filter |
| CN106414989B (en) * | 2014-05-01 | 2020-02-14 | 德尔福国际业务卢森堡公司 | Fuel injector filter |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120215 |