CN105317575A - Method for controlling multiple injections in particular in a fuel injection system of an internal combustion engine - Google Patents
Method for controlling multiple injections in particular in a fuel injection system of an internal combustion engine Download PDFInfo
- Publication number
- CN105317575A CN105317575A CN201510298195.7A CN201510298195A CN105317575A CN 105317575 A CN105317575 A CN 105317575A CN 201510298195 A CN201510298195 A CN 201510298195A CN 105317575 A CN105317575 A CN 105317575A
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- China
- Prior art keywords
- injection
- corrected value
- valve needle
- close moment
- threshold
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0614—Actual fuel mass or fuel injection amount
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0618—Actual fuel injection timing or delay, e.g. determined from fuel pressure drop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/063—Lift of the valve needle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The present invention relates to a method for controlling multiple injections in an injection system, in particular in a common-rail injection system for injecting fuel in an internal combustion engine, wherein the injection of at least two successive partial injections in time is performed by means of at least one injector having a nozzle needle. Particularly, closing time (300) of at least one nozzle needle is detected, and an operatin condition (310) in which continuous transportation of fuel is carried out between the at least two partial injections is recognized according to the detected closing time of the at least one nozzle needle.
Description
Technical field
The present invention relates to a kind of method controlled for the multi-injection of the common-rail injection system to fuel system, especially internal-combustion engine as described in the preamble by claim 1.In addition, the present invention relates to a kind of computer program, a kind of machine-readable data medium for storing described computer program and a kind of electronic controller, can perform by described computer program, described data medium and described electronic controller by method of the present invention.
Background technique
For in internal-combustion engine for the time lag between known change " common rail " ejecting system of burner oil is sprayed for each time or endurance of spraying for each time, thus the combustion process that impact is carried out in the firing chamber of described internal-combustion engine.As everyone knows, described course of injection is undertaken by sparger, and described sparger is then handled by valve needle.
As everyone knows, if the time lag between spraying for each time is too short, just there will be " continus convergence (the Durchf rderung) " of fuel, that is, the course of injection of at least twice single transfers to gradually each other and works as once unique longer course of injection.There is significant, the almost uncontrollable rising situation and occur the deterioration of combustion process as a result of emitted dose thus.
Summary of the invention
The present invention is based on following understanding: continus convergence that mention, fuel also causes following result: the close moment of the valve needle mentioned of corresponding involved sparger produces or passed backward with postponing in time.This effect according to the present invention-namely with converse thought-utilized in the following manner: indirectly identified by the detection of the accurate close moment to involved ejector pin the single injection event that in the multi-injection monitored in other words and successively accompany each other in time, especially successively accompanies each other for twice in other words part spray in " continus convergence ".Mentioned, can be undertaken by pin closure sensor in the mode be inherently known the detection of the close moment of valve needle.
When identifying the change of pin close moment and/or identifying the temporal delay of pin closing process, infer the existence of continus convergence state, described continus convergence state to rise with obvious emitted dose according to rule and is associated.Can change preferably by the adjustment of the manipulation endurance to the time lag between described at least two second part injections and/or described at least two second part injections the continus convergence state effectively tackled and so identify in other words, or cancellation terminates this unwelcome running state own in other words.
Therefore, when identifying continus convergence state, can be improved the corresponding corrected value rule of thumb determined in advance and/or the manipulation endurance reduction corresponding corrected value rule of thumb determined in advance described at least two second part sprayed the time lag between described at least two second part injections.Suitable corrected value can be known from corrected value form or similar form according to each sparger feature, such as houses the corrected value of all spargers of one or more internal-combustion engines in described corrected value form or similar form.Described method can be advantageously utilised in whole ejecting system thus.
For the change mentioned of described pin close moment detection and assessment can advantageously by threshold value monitoring realize, wherein rule of thumb try to achieve the suitable first threshold of especially the mentioned pin close moment of postponing in time in the preparatory stage.Only reliably could think when there is the specific delay of pin close moment, between twice injection, having occurred the continus convergence situation of fuel.
In addition, monitored in other words by the accurate identification for pin close moment, minimum injection interval possible in hydraulic pressure can be realized, and even can described ejecting system or based on the continuous operation of internal-combustion engine accurate adjustment is carried out to spray regime regulate again in other words/control again.
In addition, effectively can compensate the corresponding tolerance of the effect chain tolerance that may occur or manufacturing tolerances, nozzle involved especially here injection valve in other words at continuous operation regulate again (regulating loop) mentioned equally by by method of the present invention.
Only could implement by method of the present invention after the situation identifying the part injection that existence successively accompanies for twice in time each other, power system capacity system resource in other words can be saved thus.At this, can check in addition two second part spray between the time lag whether lower than rule of thumb carrying out Second Threshold given in advance.Only when lower than the continus convergence that could realize mentioned fuel when described Second Threshold completely.
The present invention especially can be used in mentioned common-rail injection system, but also with in other ejecting system of the multi-injection successively accompanied each other on free wherein, such as, can be used in the object in order to carry out the nitrogen oxide produced when exhaust after-treatment reduces fuel combustion in other words and spray in the ejecting system of aqueous solution of urea (HWL) in principle.
By computer program of the present invention set up for, especially implement each step of described method when it runs on calculator or controller.It can implement by method of the present invention on electronic controller, and need not carry out structural change to described electronic controller.For this reason, be provided with described machine-readable data medium, described data medium saves by computer program of the present invention.Obtain by electronic controller of the present invention by this mode on electronic controller will be loaded into by computer program of the present invention, this electronic controller set up for by by method of the present invention to control the multi-injection in ejecting system.
Other advantage of the present invention and design proposal obtain from following explanation and accompanying drawing.
Self-evident, feature that is noted earlier and that also will set forth below can not only use and can use or be used alone in the combination at other in corresponding illustrated combination, and does not leave scope of the present invention.
Accompanying drawing explanation
Fig. 1 a-c schematically shows device sensing device in other words that is well known in the prior art, that detect for the close moment of the valve needle to common rail injection valves;
Fig. 2 a-c to show on common-rail injection system measured sparger energising level, injection rate and the curve of valve needle motion, and more precisely situation conventionally to be compared by the situation of method of the present invention with using; And
Fig. 3 shows a kind of embodiment by method of the present invention by flow chart.
Embodiment
Fig. 1 a shows one sensing device disclosed in EP1961952A1, and this sensing device is used in the common-rail injection system of internal-combustion engine, detect or identify that injector needle is closed.Described sensing device comprises sensor 405, this sensor for detect corresponding injection valve in other words sparger (unshowned at this) valve needle open motion and/or closing movement, in particular for detecting the close moment of described valve needle and/or opening the moment.Acceleration sensor that is that described sensor 405 is configured to piezoelectricity in the ongoing illustrated embodiment or micromechanics and for detection by the kinetic mechanical vibration of described valve needle.
In addition, the described device illustrated in fig 1 a comprises sensor assembly 400, and this sensor assembly is used for the fuel quantity determining to need to be sprayed in the corresponding fuel chambers of (unshowned) internal-combustion engine by corresponding sparger.Described sensor assembly 400 especially comprise mentioned, this be configured to the acceleration sensor of piezoelectricity, the vibration transducer 405 that detects for the close moment of the valve needle to described sparger.In addition the microprocessor 410 for editing survey data is provided with.Described sensor assembly 400 comprises temperature transducer 415 extraly, can measure in described sparger or the fuel temperature be close in the sparger intake line of described sparger with this temperature transducer.In addition be provided with data storage 420, save in this data storage and compensate parameter specific to sparger and parameter can be compensated by the controller of internal-combustion engine to inquire about specific to described sparger.The electronic structure element 405,410,415,420 of described sensor assembly 400 is arranged on the circuit pedestal 430 of the circuit board being configured to pottery in this embodiment.
A kind of device as an alternative or sensing device is disclosed by WO2011085867A1, this device or sensing device, for detecting the close moment of involved valve needle here, especially accurately can obtain the close moment of described valve needle with this device or sensing device and obtain operation phase of fuel injection mechanism thus.Described device is based on following principle: occur characteristics pressure change when described valve needle is closed and opened in other words, and described pressure change can very accurately be detected.Especially utilize following understanding at this: control room pressure the injection phase of fuel injector beginning and at the end of can change significantly, wherein said control room pressure can detect by manometer.
Fig. 1 b show here involved fuel injector, shown in WO2011085867A1, the axial section of part, described fuel injector has hyperbaric chamber 2 and low pressure chamber 3 in the inside of ejector body 1.This Liang Ge pressure chamber separates each other by valve member 4.Described hyperbaric chamber 2 is such as communicated with unshowned common rail by inlet passage 5.Described low pressure chamber 3 is connected with fuel tank by return line 21.
Described hyperbaric chamber 2 can be connected by the firing chamber of unshowned nozzle with same unshowned internal-combustion engine.Described nozzle controls by valve needle in known mode, illustrate only in Figure 1b in this valve needle away from nozzle, the end that is configured to plunger 6.Described plunger 6 is arranged in a control room 7 be arranged in described valve member 4 with fashion of extrusion with working.Described control room 7 to be communicated with described hyperbaric chamber 2 by inlet throttle valve 8 and is communicated with described low pressure chamber 3 by the outlet passage 9 being preferably subject to throttling, and wherein said outlet passage 9 controls by control valve device 10.If described outlet passage is isolated and described valve needle is in its closed position by described control valve device 10, so in described control room 7, just there is the high pressure identical with in described hyperbaric chamber 2, consequently: described plunger 6 is extruded in Figure 1b and coupled valve needle is maintained in closed position isolated for described nozzle downwards.If described outlet passage 9 is opened by described control valve device 10, in described control room 7, so just there is the pressure reduced relative to the high pressure in described hyperbaric chamber 2, and described plunger 6 together with described valve needle in Figure 1b upward to movement, that is described valve needle is adjusted in its open position, thus is injected fuel in described firing chamber by described nozzle.
Described control valve device 10 has the closed shape 11 of sleeve-shaped, and this closed shape is compressed towards the matching seat concentric with the exhaust port of described outlet passage 9 by the case spring 12 being configured to helical compression spring.The closed shape 11 of described sleeve-shaped is guided on the guide rod 13 coaxial with the longitudinal axis 100 of described ejector body 1 in the mode that can move axially, and works as leak free sealing off gap in the annulus wherein between the inner circumference and the excircle of described guide rod 13 of described closed shape 11.
If described closed shape 11 occupies the closed position illustrated in Figure 1b, the described pressure chamber 14 formed in the inside of closed shape 11 just completely cuts off relative to described low pressure chamber 3 by that, and this pressure chamber to be communicated with described control room 7 by described outlet passage 9 and then correspondingly has the hydrodynamic pressure identical with described control room 7.Described closed shape 11 arranges the armature 15 of the star of electromagnet device 16, and described electromagnet device 16 is arranged as the actuator for handling described control valve device 10.This electromagnet device 16 has electromagnetic coil 17 in known mode, and this electromagnetic coil is arranged in the inside of the electromagnet device of pole 19 in concentric with described guide rod 13, to have annular outer pole 18 and annular.If be energized to described electromagnetic coil 17, so described armature 15 is just by the magnetic attachment of described electrode 18 and 19, thus described closed shape 11 is mentioned from its matching seat and opens described control valve device 10 by the power overcoming described closing spring.
In the dwell period of the described valve needle be connected with plunger 6, that is when nozzle is closed, described control valve device 10 is closed, and there is identical hydrodynamic pressure in described pressure chamber 14 and in described control room 7.Just before the close moment of described valve needle, the pressure in described control room 7 due to this time be engraved in described valve needle nozzle carrier below less pressure and the dropping under the high pressure in described inlet passage 5 thereupon the closing movement carried out of described plunger 6.Just after described valve needle is closed, in described control room 7, occur the precipitous rising situation of pressure due to the plunger 6 stopped now, wherein said control room pressure increase is to the pressure in described inlet passage 5.Therefore, in the pressure in described control room 7 and described pressure chamber 14, in fact identical with pressure in control room 7 pressure has outstanding minimum value in the close moment of described valve needle.
Sparger in figure 1 c for illustrating in Figure 1b schematically illustrates the curve (graph A) of valve needle lift and the curve (chart B) of control room pressure.Because also there is the pressure in described control room 7 in described pressure chamber 14 when described closed shape 11 is closed, so described guide rod 13 is always subject to the load of described control room pressure in the inside of described closed shape 11 in this valve position on end face.Described control room pressure is especially passed to by described guide rod 13 on the pressure transducer 20 that schematically shows in Figure 1b, thus makes analysis circuit that is unshowned, that be connected with described pressure transducer 20 at suction side continue to obtain the information of pressure in about described control room 7 and especially detect the close moment of described valve needle thus.The analysis circuit mentioned can be integrated in the controller of described unshowned internal-combustion engine.
Described, provide the voltage change in other words of the voltage in the scope being in about 1V for the sensing device detected the close moment of valve needle as measurement signal.Also can be substituted in shown in accompanying drawing above, consider pressure drag component for the sensing device of piezoelectricity that detects close moment, described pressure drag component utilizes so-called piezoresistive effect, described piezoresistive effect is, many materials change its unit resistance under pressure.
The curve 200,205 illustrated in fig. 2 a first time spray 210 and in time back to back second time spray between 215 there is relatively little interval current"on"time.Injection rate meter that illustrate in figure 2b, that implement when mentioned energising understands the injection 220 enough do not separated in time for twice.Described " time does not enough separate " causes particularly by following situation: the injection rate when being energized according to curve 200 between described twice injection 220 does not drop to the raw value of about 0mV, but only drops to obviously numerical value that is higher, approximately 70mV.
As found out can measuring from the injection rate according to Fig. 2 b equally, spray 210 according to curve 205 in first time and spray with second time the injection 225 producing energization interval is larger between 215 and separate significantly for twice.
According to the present invention, described twice injection 220, that lack or inadequate temporal temporal passing or the delay separately also causing valve needle closing process.Described injector nozzle needle movement 230,235 illustrate in figure 2 c be energized according to curve 200,205 time produce experiment curv describe this association, because the experiment curv 230 produced from energising 210 comparatively early is obviously passed in time relative to the experiment curv 235 produced from slower energising 205, and has passed about 0.05ms in the ongoing illustrated embodiment or rather backward backward.
Be noted that, illustrate only the result of the test examples obtained on test desk in other words test stand in the X-axis of the experiment curv shown in Fig. 2 a to 2c and the corresponding scale of Y-axis, and therefore should not come restrictively to understand shown concrete for measured value of the present invention by any way.
According to by method of the present invention embodiment shown in Figure 3, first detect 300 pin closing process moment of corresponding mentioned magnitude of voltage, namely described magnitude of voltage and/or size in other words.Whether whether the pin close moment that inspection 305 is detected equally here on the basis of detected magnitude of voltage is greater than rule of thumb is carried out threshold value given in advance, that is pass backward in time.If do not meet this condition, then to again detect pin closing process, because will suppose according to the present invention when not meeting this condition 305, for described combustion process, do not occur that the situation of continus convergence fuel described above is together with mentioned disadvantageous consequence.
But, if described inspection 305 shows to meet mentioned condition, then suppose to identify in other words 310 situations that there is continus convergence fuel between corresponding twice injection, and adjust in following step 315, especially improve time lag between the energising curve of described twice injection, tackle the situation of the continus convergence fuel mentioned thus or suppress to terminate this situation in other words.
Be noted that and preferably only just start program shown in figure 3 when identifying the injection existing in other words and successively accompany each other in time for twice.
Described method can be carried out the form of the control program of the electronic controller controlled for combustion motor or realize with the form of one or more corresponding electronic control unit (ECU).
Claims (11)
1. in ejecting system, especially carry out for the multi-injection in the common-rail injection system of burner oil the method that controls in internal-combustion engine, the sparger that the injection that wherein at least twice part successively accompanied each other is in time sprayed has valve needle by least one carries out, it is characterized in that, detect the close moment (300) of described at least one valve needle, and according to described at least one valve needle, there is situation (310) in what detected close moment identified following running state, between described at least two second part are sprayed, the continus convergence of fuel is carried out in this running state.
2. by method according to claim 1, it is characterized in that, the detection for the close moment of described at least one valve needle is closed sensing device by pin and is carried out.
3. by the method described in claim 1 or 2, it is characterized in that, detected close moment and first threshold are compared (305), and only just infers the situation (310) that there is continus convergence state between described at least two second part are sprayed when exceeding described first threshold.
4. by method in any one of the preceding claims wherein, it is characterized in that, change when the continus convergence state between identifying at least two second part and spraying, especially improve time lag (315) of manipulation that described at least two second part are sprayed, and/or change, especially reduce described at least two second part manipulation endurance of spraying.
5. by method according to claim 4, it is characterized in that, with prior the first corrected value rule of thumb determined for amplitude improves for the time lag of the manipulation of described at least two second part injections and/or with the manipulation endurance of the second corrected value rule of thumb determined in advance at least two second part injections described in amplitude reduction.
6., by method according to claim 5, it is characterized in that, be provided with corrected value form, in described corrected value form, house corrected value specific to sparger, wherein from described corrected value form, call mentioned corrected value.
7., by method in any one of the preceding claims wherein, it is characterized in that, only just implement when identifying the part successively accompanied each other in time for twice and spraying by aforementioned claim or multinomial described in, the step mentioned.
8. by method according to claim 7, it is characterized in that, the time lag between spraying in described two second part is compared with Second Threshold, and only when lower than the just step mentioned of enforcement when described Second Threshold.
9. computer program, described computer program sets up each step for implementing a kind of method.
10. machine-readable data medium, described data medium saves by computer program according to claim 9.
11. electronic controllers, described electronic controller set up for, by by the method according to any one of claim 1 to 8, the multi-injection in ejecting system is controlled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014210561.7A DE102014210561A1 (en) | 2014-06-04 | 2014-06-04 | Method for controlling multiple injections, in particular in a fuel injection system of an internal combustion engine |
| DE102014210561.7 | 2014-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105317575A true CN105317575A (en) | 2016-02-10 |
| CN105317575B CN105317575B (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510298195.7A Active CN105317575B (en) | 2014-06-04 | 2015-06-03 | Method for controlling multiple injections in a fuel injection system, in particular of an internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105317575B (en) |
| DE (1) | DE102014210561A1 (en) |
| FR (1) | FR3022002B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816395A (en) * | 2016-09-12 | 2018-03-20 | 罗伯特·博世有限公司 | Method for being controlled to the multi-point injection in spraying system |
| CN107816393A (en) * | 2016-09-12 | 2018-03-20 | 罗伯特·博世有限公司 | Method for being controlled to the multi-point injection in spraying system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7021491B2 (en) | 2017-09-28 | 2022-02-17 | 株式会社デンソー | Fuel injection control device |
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| US20020096140A1 (en) * | 2000-12-22 | 2002-07-25 | Michael Heinzelmann | Method and device for monitoring an interval between two injection operations |
| US20070215097A1 (en) * | 2006-03-17 | 2007-09-20 | Denso Corporation | Fuel injection control system designed to eliminate overlap between multiple fuel injection events |
| CN102575607A (en) * | 2009-09-17 | 2012-07-11 | 罗伯特·博世有限公司 | Method and apparatus for determining a movement of an injection valve needle |
| CN103161595A (en) * | 2011-12-14 | 2013-06-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Multiple-injection control method for internal-combustion engine fuel system |
| CN103511105A (en) * | 2012-06-27 | 2014-01-15 | 通用汽车环球科技运作有限责任公司 | Fuel injector closing timing adjustment systems and methods |
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| DE102007008617A1 (en) | 2007-02-22 | 2008-08-28 | Robert Bosch Gmbh | Injector with sensor module and injection system |
| US7886719B2 (en) * | 2007-08-30 | 2011-02-15 | Ford Global Technologies, Llc | System and method to compensate for variable fuel injector characterization in a direct injection system |
| DE102010000827A1 (en) | 2010-01-12 | 2011-07-14 | Robert Bosch GmbH, 70469 | fuel injector |
| DE102010044210A1 (en) * | 2010-11-22 | 2012-05-24 | Robert Bosch Gmbh | Method for operating internal combustion engine, involves adjusting reference operational mode in which parameter is provided for characterizing temporal difference between end of one partial injection and start of other partial injection |
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2014
- 2014-06-04 DE DE102014210561.7A patent/DE102014210561A1/en active Pending
-
2015
- 2015-06-03 FR FR1555039A patent/FR3022002B1/en active Active
- 2015-06-03 CN CN201510298195.7A patent/CN105317575B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020096140A1 (en) * | 2000-12-22 | 2002-07-25 | Michael Heinzelmann | Method and device for monitoring an interval between two injection operations |
| US20070215097A1 (en) * | 2006-03-17 | 2007-09-20 | Denso Corporation | Fuel injection control system designed to eliminate overlap between multiple fuel injection events |
| CN102575607A (en) * | 2009-09-17 | 2012-07-11 | 罗伯特·博世有限公司 | Method and apparatus for determining a movement of an injection valve needle |
| CN103161595A (en) * | 2011-12-14 | 2013-06-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Multiple-injection control method for internal-combustion engine fuel system |
| CN103511105A (en) * | 2012-06-27 | 2014-01-15 | 通用汽车环球科技运作有限责任公司 | Fuel injector closing timing adjustment systems and methods |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816395A (en) * | 2016-09-12 | 2018-03-20 | 罗伯特·博世有限公司 | Method for being controlled to the multi-point injection in spraying system |
| CN107816393A (en) * | 2016-09-12 | 2018-03-20 | 罗伯特·博世有限公司 | Method for being controlled to the multi-point injection in spraying system |
| CN107816395B (en) * | 2016-09-12 | 2022-02-11 | 罗伯特·博世有限公司 | Method for controlling multipoint injection in an injection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105317575B (en) | 2020-02-18 |
| FR3022002B1 (en) | 2019-08-09 |
| DE102014210561A1 (en) | 2015-12-17 |
| FR3022002A1 (en) | 2015-12-11 |
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