CN102364080A - Multistage throttling pressure-stabilizing electric control fuel injector - Google Patents
Multistage throttling pressure-stabilizing electric control fuel injector Download PDFInfo
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- CN102364080A CN102364080A CN2011103730981A CN201110373098A CN102364080A CN 102364080 A CN102364080 A CN 102364080A CN 2011103730981 A CN2011103730981 A CN 2011103730981A CN 201110373098 A CN201110373098 A CN 201110373098A CN 102364080 A CN102364080 A CN 102364080A
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- fuel injector
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Abstract
The invention aims to provide a multistage throttling pressure-stabilizing electric control fuel injector, which comprises a fuel injector shell, an electromagnet, an armature, an oil accommodating tank connected with a high-pressure fuel inlet, a needle valve arranged in the oil accommodating tank, a sealing valve, an oil inlet pressure-stabilizing cavity, an oil outlet pressure-stabilizing cavity, a pressure control chamber and a control piston, wherein both the electromagnet and the armature are arranged in the shell; the sealing valve is arranged below the armature; one end of the oil outlet pressure-stabilizing cavity is connected with the sealing valve, and the other end of the oil outlet pressure-stabilizing cavity is communicated with the pressure control chamber; one end of the oil inlet pressure-stabilizing cavity is communicated with the pressure control chamber, and the other end of the oil inlet pressure-stabilizing cavity is communicated with the high-pressure fuel inlet and the oil accommodating tank; and the control piston is arranged in the pressure control chamber. According to the fuel injector, the response speed of the needle valve after power on and off of an electromagnetic valve can be improved, the injection delay time is shortened, pressure fluctuation in the pressure control chamber is weakened, the stability of the fuel injection amount of the fuel injector is improved, the fluctuation of circulating fuel injection amount is reduced, optimization of the injection performance of the system is realized, economic efficiency of the fuel injector is improved and harmful discharge is effectively reduced.
Description
Technical field
What the present invention relates to is a kind of injection system that is used for technical field of internal combustion engines.
Background technique
Oil sprayer is one of core component of diesel engine, and its main task is that the injection timing according to the motor requirement sprays quantitative fuel oil with certain atomised form in the firing chamber.Along with improving constantly that the Economy of diesel engine is required, the increasingly stringent of Abgasgesetz and the continuous development of science and technology, oil sprayer is brought in constant renewal in and is regenerated.The diesel engine electric-controlled oil ejector of current extensive use has the characteristics of the flexible soft readjustment oil spout moment, fuel injection rate and fuel injection quantity, effectively improves the Economy of diesel engine, reduces noxious emission.In the prior art; Electric-controlled fuel injector can require in the firing chamber, to spray into fuel oil accurately and control fuel injection beginning and the concluding time according to engine operating condition; But can't improve the action response speed of fuel injection needle effectively; Weaken the indoor pressure surge of pressure control, improve the stable of oil sprayer fuel injection quantity, reduce the fluctuation of circulating fuel injection quantity.
Summary of the invention
The object of the present invention is to provide the stable multistage throttle voltage stabilizing electric-controlled fuel injector of effective raising needle-valve action response speed and oil sprayer fuel injection quantity.
The objective of the invention is to realize like this:
Multistage throttle voltage stabilizing electric-controlled fuel injector of the present invention; Comprise oil sprayer shell, electromagnet, armature, the oil holding slot that links to each other with the high pressure fuel inlet, be installed in the needle-valve in the oil holding slot; Electromagnet and armature all are installed in the oil sprayer shell; It is characterized in that: also comprise seal valve, oil-feed pressure stabilizing cavity, fuel-displaced pressure stabilizing cavity, pressure controling chamber, control piston, seal valve is installed in the below of armature, and fuel-displaced pressure stabilizing cavity one end connects seal valve, the other end is communicated with pressure controling chamber; Oil-feed pressure stabilizing cavity one end is communicated with pressure controling chamber, the other end is communicated with high pressure fuel inlet and oil holding slot, and control piston is installed in the pressure controling chamber.
The present invention can also comprise:
1, also comprise meter in hole, fuel-displaced throttle orifice, the meter in hole is installed in the two ends of oil-feed pressure stabilizing cavity, and fuel-displaced throttle orifice is installed in the two ends of fuel-displaced pressure stabilizing cavity.
2, described oil-feed pressure stabilizing cavity has two at least, is communicated with each other.
3, described fuel-displaced pressure stabilizing cavity has two at least, is communicated with each other.
Advantage of the present invention is: the automatically controlled voltage stabilizing oil sprayer of multistage throttle can improve needle-valve speed of response behind the solenoid valve break-make electricity; Shorten the injection delay phase; Weaken the fluctuation of pressure control room pressure, improve the stability of oil sprayer fuel injection quantity, reduce the circulating fuel injection quantity fluctuation; Realized optimization, improved engine fuel economy and effectively reduced noxious emission system's jet performance.
Description of drawings
Fig. 1 is the automatically controlled voltage stabilizing fuel injector structure of a two-stage throttling of the present invention schematic representation;
Fig. 2 is the local enlarged diagram of the automatically controlled voltage stabilizing oil sprayer of two-stage throttling of the present invention;
Fig. 3 is the three grades of automatically controlled voltage stabilizing fuel injector structure of throttling schematic representation of the present invention;
Fig. 4 is the local enlarged diagram of the automatically controlled voltage stabilizing oil sprayer of three grades of throttlings of the present invention.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
Mode of execution 1:
In conjunction with Fig. 1～2, Fig. 1 is the automatically controlled voltage stabilizing fuel injector structure of a two-stage throttling of the present invention schematic representation, and oil-feed and fuel-displaced all is made up of two throttle orifices and a pressure stabilizing cavity; It is by the electromagnetic valve part; Two-stage throttling voltage stabilizing oil circuit, hydraulic servomechanism, fuel injection needle is formed.Maximum of the present invention is characterised in that two-stage throttling voltage stabilizing oil circuit shown in Figure 2, and it comprises high pressure fuel inlet 3, the first meter in holes 4; Oil-feed pressure stabilizing cavity 5 second meter in holes 6; Control piston 7 pressure controling chamber 10, the first fuel-displaced throttle orifices 11, fuel-displaced pressure stabilizing cavity 12; The second fuel-displaced throttle orifice 13, seal valve 14.High-speed electromagnetic valve 1 energising in Fig. 1; Armature 2 receives the effect of electromagnetic force and is raised; Seal valve 14 is opened sealing surface owing to receive active force upwards; Fuel oil that pressure controling chamber is 10 li flows into fuel-displaced pressure stabilizing cavity 12 through the first fuel-displaced throttle orifice 11, and the pressure stabilization function of pressure stabilizing cavity has weakened the fuel pressure fluctuation, the fuel oil second fuel-displaced throttle orifice 13 of flowing through stably; Because oil holding slot 8 makes needle-valve 9 receive active force upwards with pressure controling chamber's 10 action of pressure, needle-valve 9 lifts, commencement of fuel injection; Control piston 7 moves upward with the rise of needle-valve 9, and pressure controling chamber's 10 volumes reduce, and fuel oil flows out through the first fuel-displaced throttle orifice 11, fuel-displaced pressure stabilizing cavity 12, the second fuel-displaced throttle orifice 13.High pressure fuel is by high pressure oil inlet 3 the flow through first meter in hole 4, oil-feed pressure stabilizing cavity 5, the second meter in hole 6; Get into pressure controling chamber 10; Utilize the first meter in hole 4 and the throttling action of the second meter in hole, 6 binodal discharge orifices and the pressure stabilization function of oil-feed pressure stabilizing cavity 5, reduced the pressure surge of high pressure fuel.When high-speed electromagnetic valve 1 outage, armature 2 is taken a seat downwards by restoring force to reset, and seal valve 14 is taken a seat with armature motion, and close encapsulation face again cuts off the earial drainage of fuel oil; High pressure fuel continues to get into pressure controling chamber 10 via the first meter in hole 4, oil-feed pressure stabilizing cavity 5, the second meter in hole 6; Fuel pressure in the pressure controling chamber 10 improves rapidly; Control piston 7 is closed rapidly under the effect of pressure controling chamber's 10 inner high voltage fuel oils with needle-valve 9, and oil spout stops.Pressure stabilization function through the first meter in hole 4, the second meter in hole, 6, the first fuel-displaced throttle orifice 11 proportion relation different and oil-feed pressure stabilizing cavity 5, fuel-displaced pressure stabilizing cavity 12 with the second fuel-displaced throttle orifice 13; Can realize the keying that needle-valve 9 is quick, stable; Effectively fuel pressure fluctuates to the influence of control piston 7 response characteristics in the weakening pressure controling chamber; Improve the stability of oil sprayer fuel injection quantity, weaken the fluctuation of circulating fuel injection quantity.
Mode of execution 2:
Fig. 3 is the three grades of automatically controlled voltage stabilizing fuel injector structure of throttling schematic representation of the present invention, and Fig. 4 is three grades of local enlarged diagrams of the automatically controlled voltage stabilizing oil sprayer of throttling.On the basis of mode of execution 1; Oil-feed and fuel-displaced all is made up of three throttle orifices and two pressure stabilizing cavities, according to different diesel spray requirements, disposes a plurality of throttle orifices and corresponding pressure stabilizing cavity; Form the automatically controlled voltage stabilizing oil sprayer of multistage throttle, to realize different functions.
Claims (5)
1. multistage throttle voltage stabilizing electric-controlled fuel injector; Comprise oil sprayer shell, electromagnet, armature, the oil holding slot that links to each other with the high pressure fuel inlet, be installed in the needle-valve in the oil holding slot; Electromagnet and armature all are installed in the oil sprayer shell; It is characterized in that: also comprise seal valve, oil-feed pressure stabilizing cavity, fuel-displaced pressure stabilizing cavity, pressure controling chamber, control piston, seal valve is installed in the below of armature, and fuel-displaced pressure stabilizing cavity one end connects seal valve, the other end is communicated with pressure controling chamber; Oil-feed pressure stabilizing cavity one end is communicated with pressure controling chamber, the other end is communicated with high pressure fuel inlet and oil holding slot, and control piston is installed in the pressure controling chamber.
2. multistage throttle voltage stabilizing electric-controlled fuel injector according to claim 1 is characterized in that: also comprise meter in hole, fuel-displaced throttle orifice, the meter in hole is installed in the two ends of oil-feed pressure stabilizing cavity, and fuel-displaced throttle orifice is installed in the two ends of fuel-displaced pressure stabilizing cavity.
3. multistage throttle voltage stabilizing electric-controlled fuel injector according to claim 1 and 2 is characterized in that: described oil-feed pressure stabilizing cavity has two at least, is communicated with each other.
4. multistage throttle voltage stabilizing electric-controlled fuel injector according to claim 1 and 2 is characterized in that: described fuel-displaced pressure stabilizing cavity has two at least, is communicated with each other.
5. multistage throttle voltage stabilizing electric-controlled fuel injector according to claim 3 is characterized in that: described fuel-displaced pressure stabilizing cavity has two at least, is communicated with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103730981A CN102364080A (en) | 2011-11-22 | 2011-11-22 | Multistage throttling pressure-stabilizing electric control fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103730981A CN102364080A (en) | 2011-11-22 | 2011-11-22 | Multistage throttling pressure-stabilizing electric control fuel injector |
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| CN102364080A true CN102364080A (en) | 2012-02-29 |
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| CN2011103730981A Pending CN102364080A (en) | 2011-11-22 | 2011-11-22 | Multistage throttling pressure-stabilizing electric control fuel injector |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018964A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Pressure accumulation flow-limiting type piezoelectric control oil sprayer |
| CN104018969A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Piezoelectric control pressure accumulation and stabilization oil sprayer |
| CN104033299A (en) * | 2014-06-19 | 2014-09-10 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common-rail oil sprayer |
| CN104775955A (en) * | 2015-04-20 | 2015-07-15 | 烟台福尔精密机械有限公司 | Low-inertia center-mounted balance control valve type common-rail oil injector |
| CN106065835A (en) * | 2016-05-31 | 2016-11-02 | 清华大学 | There is the independent Electrocontrolled high-pressure fuel injector controlling piston couple |
| CN106523223A (en) * | 2017-01-18 | 2017-03-22 | 哈尔滨工程大学 | Micro-dynamic oil return resonance bypass type electronic control oil injector |
| CN106545444A (en) * | 2017-01-18 | 2017-03-29 | 哈尔滨工程大学 | A kind of two-way oil-feed bypass type electric-controlled fuel injector with ditch |
| CN106545448A (en) * | 2017-01-18 | 2017-03-29 | 哈尔滨工程大学 | Two-way oil-feed resonance bypass type electric-controlled fuel injector |
| CN106640452A (en) * | 2016-12-21 | 2017-05-10 | 安徽瑞沃电子科技有限公司 | Special oil injection device for highpressure common rail |
| WO2017202540A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Control valve for a fuel injection valve |
| CN110848060A (en) * | 2019-10-14 | 2020-02-28 | 中国北方发动机研究所(天津) | Electric control pressure accumulation oil sprayer |
| CN111058983A (en) * | 2018-10-17 | 2020-04-24 | 罗伯特·博世有限公司 | Fuel injector |
| CN116006366A (en) * | 2023-03-24 | 2023-04-25 | 哈尔滨工程大学 | Electric control fuel injector capable of realizing stable injection based on self-adaptive adjustment of resistance-capacitance component |
| CN116085159A (en) * | 2023-03-31 | 2023-05-09 | 哈尔滨工程大学 | Common rail fuel injector capable of realizing stable injection based on multistage self-pressure regulation dissipation |
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| US4776518A (en) * | 1986-04-11 | 1988-10-11 | Nippondenso Co., Ltd. | Fuel injection valve used in fuel injection apparatus for internal combustion engine |
| GB2202000A (en) * | 1987-02-04 | 1988-09-14 | Nigel James Leighton | I.C. engine fuel injection systems using electro fluidic injectors |
| CN1396985A (en) * | 2000-12-07 | 2003-02-12 | 罗伯特·博施有限公司 | Fuel injection system for internal combustion engines |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018969A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Piezoelectric control pressure accumulation and stabilization oil sprayer |
| CN104018964A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Pressure accumulation flow-limiting type piezoelectric control oil sprayer |
| CN104033299A (en) * | 2014-06-19 | 2014-09-10 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common-rail oil sprayer |
| CN104033299B (en) * | 2014-06-19 | 2016-05-11 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | A kind of common-rail injector |
| CN104775955A (en) * | 2015-04-20 | 2015-07-15 | 烟台福尔精密机械有限公司 | Low-inertia center-mounted balance control valve type common-rail oil injector |
| WO2017202540A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Control valve for a fuel injection valve |
| CN106065835A (en) * | 2016-05-31 | 2016-11-02 | 清华大学 | There is the independent Electrocontrolled high-pressure fuel injector controlling piston couple |
| CN106065835B (en) * | 2016-05-31 | 2017-06-20 | 清华大学 | Electrocontrolled high-pressure fuel injector with independent control piston couple |
| CN106640452A (en) * | 2016-12-21 | 2017-05-10 | 安徽瑞沃电子科技有限公司 | Special oil injection device for highpressure common rail |
| CN106545448A (en) * | 2017-01-18 | 2017-03-29 | 哈尔滨工程大学 | Two-way oil-feed resonance bypass type electric-controlled fuel injector |
| CN106545444A (en) * | 2017-01-18 | 2017-03-29 | 哈尔滨工程大学 | A kind of two-way oil-feed bypass type electric-controlled fuel injector with ditch |
| CN106523223A (en) * | 2017-01-18 | 2017-03-22 | 哈尔滨工程大学 | Micro-dynamic oil return resonance bypass type electronic control oil injector |
| CN106545448B (en) * | 2017-01-18 | 2022-07-15 | 哈尔滨工程大学 | Double-path oil inlet resonance bypass type electric control oil injector |
| CN111058983A (en) * | 2018-10-17 | 2020-04-24 | 罗伯特·博世有限公司 | Fuel injector |
| CN111058983B (en) * | 2018-10-17 | 2024-04-16 | 罗伯特·博世有限公司 | Fuel injector |
| CN110848060A (en) * | 2019-10-14 | 2020-02-28 | 中国北方发动机研究所(天津) | Electric control pressure accumulation oil sprayer |
| CN110848060B (en) * | 2019-10-14 | 2022-03-15 | 中国北方发动机研究所(天津) | Electric control pressure accumulation oil sprayer |
| CN116006366A (en) * | 2023-03-24 | 2023-04-25 | 哈尔滨工程大学 | Electric control fuel injector capable of realizing stable injection based on self-adaptive adjustment of resistance-capacitance component |
| CN116085159A (en) * | 2023-03-31 | 2023-05-09 | 哈尔滨工程大学 | Common rail fuel injector capable of realizing stable injection based on multistage self-pressure regulation dissipation |
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Application publication date: 20120229 |