CN110360018A - A kind of control method of dual fuel engine fuel injection system - Google Patents
A kind of control method of dual fuel engine fuel injection system Download PDFInfo
- Publication number
- CN110360018A CN110360018A CN201810250010.9A CN201810250010A CN110360018A CN 110360018 A CN110360018 A CN 110360018A CN 201810250010 A CN201810250010 A CN 201810250010A CN 110360018 A CN110360018 A CN 110360018A
- Authority
- CN
- China
- Prior art keywords
- state
- jump
- sintering
- enters
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Abstract
It is an object of the invention to the driving signal short time driving armature movements using small pulsewidth, generate the fuel circuit flowing inside fuel injector and are cooled down；Include the following steps, one, init state, sintering protection closed state are entered after system electrification；Two, meet and enter waiting condition, then enters and jump 1；If any wait state condition that enters occur to be unsatisfactory for, enters and jump 2；Three, it after protecting wait state into sintering, is selected according to calibration, before diesel pilot injection, in fuel gas buring or after burning, and meets function and enable service condition, then enter and jump 3；It is unsatisfactory for if any function occur and enabling service condition, enters and jump 4；Four, after protecting open state into sintering, number or function enable time is driven to reach initial alignment requirement, then enters and jump 5；Five, it is, if spraying cycle terminates, to enter and jump 6 into sintering protection open state to sintering protection upper limit state.
Description
Technical field
The present invention relates to technical field of engines more particularly to a kind of controlling parties of dual fuel engine fuel injection system
Method.
Background technique
Diesel-CNG dual fuel engine system is to add day on the basis of engine original diesel fuel systems are constant
Right gas fuel feed system composition.The gaseous mixture of cylinder sucking air and natural gas when engine is run, then by original diesel oil
Fuel injector sprays into a small amount of diesel oil and ignites.Fuel injector only sprays a small amount of diesel oil for lighting natural gas at burning initial stage, is firing
Amount of heat is transmitted to the nozzle of fuel injector during burning and nozzle can not be cooled down effectively, and then be sintered caused by being overheated because of nozzle
Problem.Theoretically diesel injection should account for 5% or so of single injection event fuel only to reach most economical state, but be limited by oil spout
The accounting of the problem of device reliability, traditional bifuel system diesel injection amount can reach 20% or more, greatly reduce double fuel
The economy of system.Fuel economy can be also greatly improved so solving fuel injector heat dissipation problem and not only will increase system reliability
Property.
Chinese utility model patent is disclosed, publication number: CN106481469A, patent name: dual fuel engine oil spout
Control method, control device, engine and vehicle, the applying date: 20150828, it discloses a kind of dual fuel engine oil spout controls
Method, control device, engine and vehicle processed, the dual fuel engine fuel injection control method include: to obtain the double fuel
The water temperature of engine, and determine oil spout map corresponding with the water temperature；Obtain revolving speed and the torsion of the dual fuel engine
Square, and jeting area corresponding with the revolving speed and torque is determined from the oil spout map；And according to the jeting area
Corresponding oil spout map carries out oil spout；Wherein, the dual fuel engine includes multiple operations corresponding with multiple temperature ranges
Region, and each operation area includes corresponding to the more of different rotating speeds and torque using different oil spout map, each oil spout map
A jeting area, each jeting area include the different injection modes for gasoline and/or diesel oil.Double fuel of the present invention
Engine fuel injection control method runs vehicle under different engine water temperatures smoothly, and keeps lower oil consumption and row
It puts.
In order to solve the above problem, respective algorithms logic is added in engine controller, utilizes the driving signal of small pulsewidth
Short time drives armature mobile, generates the fuel circuit flowing inside fuel injector and is cooled down.Since driving time is short, needle-valve is not
Generation oil spout can be lifted, the circuit flowing of fuel oil can be considered dynamic leakage.According to principles above, in fuel injector not oil spout state
Pulse signal driving fuel injector periodically can be repeatedly issued, multiple dynamic leakage but not practical oil spout are caused, increases fuel oil to spray
The cooling of mouth reduces failure rate caused by sintering, increases the fuel injector service life.
Summary of the invention
It is an object of the invention to the driving signal short time driving armature movements using small pulsewidth, generate inside fuel injector
Fuel circuit flowing cooled down.
The present invention provides a kind of control method of dual fuel engine fuel injection system, which is characterized in that including following
Step,
Step 1 enters init state, sintering protection closed state after system electrification；
Step 2 meets and enters waiting condition, then enters and jump 1, jumps 1 as sintering protection wait state；If occur it is any into
Enter wait state condition to be unsatisfactory for, then enter and jump 2, jumps 2 to jump back to sintering protection closed state；
Step 3, into sintering protect wait state after, according to calibration select, diesel pilot injection before, in fuel gas buring or
After burning, and meet function and enable service condition, then enter and jump 3, jumps 3 as sintering protection open state；If occurring
Any function enables service condition and is unsatisfactory for, then enters and jump 4, jumps 4 to jump back to sintering protection wait state；
Step 4 after protecting open state into sintering, drives number or function enable time to reach initial alignment requirement, then into
Enter to jump 5, jumps 5 as sintering protection upper limit state；
Step 5 is, if spraying cycle terminates, to enter and jump into sintering protection open state to sintering protection upper limit state
6,6 are jumped to jump back to sintering protection wait state.
Preferably, sintering protection closed state is that nozzle sintering protection is inactive.
Preferably, sintering protection wait state is to meet anti-sintered function to enable condition, and function activation enters wait state,
It waits and reaches pilot injection angle, injection is prevented to be overlapped.
Preferably, sintering protection open state is that anti-sintered function enters enabled state, the small size pulsewidth letter of periodicity sending
Number repeatedly driving fuel injector cooled down.
Preferably, sintering protection upper limit state is that driving number or function enable time reach original definition requirement.
Beneficial effects of the present invention are that pulse signal driving spray periodically can be repeatedly issued in fuel injector not oil spout state
Oily device causes multiple dynamic leakage but not practical oil spout, increases cooling of the fuel oil to nozzle, reduces failure rate caused by sintering,
Increase the fuel injector service life.
Detailed description of the invention
Fig. 1 is method logic chart of the invention.
Specific embodiment
With reference to the accompanying drawing to this it is practical be described in detail, the description of this part be only it is exemplary and explanatory, do not answer
There is any restriction effect to protection scope of the present invention.
The present invention provides a kind of control method of dual fuel engine fuel injection system, which is characterized in that including following
Step,
Step 1 enters init state, sintering protection closed state after system electrification；
Step 2 meets and enters waiting condition, then enters and jump 1, jumps 1 as sintering protection wait state；If occur it is any into
Enter wait state condition to be unsatisfactory for, then enter and jump 2, jumps 2 to jump back to sintering protection closed state；
Step 3, into sintering protect wait state after, according to calibration select, diesel pilot injection before, in fuel gas buring or
After burning, and meet function and enable service condition, then enter and jump 3, jumps 3 as sintering protection open state；If occurring
Any function enables service condition and is unsatisfactory for, then enters and jump 4, jumps 4 to jump back to sintering protection wait state；
Step 4 after protecting open state into sintering, drives number or function enable time to reach initial alignment requirement, then into
Enter to jump 5, jumps 5 as sintering protection upper limit state；
Step 5 is, if spraying cycle terminates, to enter and jump into sintering protection open state to sintering protection upper limit state
6,6 are jumped to jump back to sintering protection wait state.
Preferably, sintering protection closed state is that nozzle sintering protection is inactive.
Preferably, sintering protection wait state is to meet anti-sintered function to enable condition, and function activation enters wait state,
It waits and reaches pilot injection angle, injection is prevented to be overlapped.
Preferably, sintering protection open state is that anti-sintered function enters enabled state, the small size pulsewidth letter of periodicity sending
Number repeatedly driving fuel injector cooled down.
Preferably, sintering protection upper limit state is that driving number or function enable time reach original definition requirement.
It should be noted that term " center ", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " are only used for description mesh
, it is not understood to indicate or imply relative importance.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within made modifications, equivalent substitutions and improvements etc., should be included in claim protection model of the invention
Within enclosing.
Claims (5)
1. a kind of control method of dual fuel engine fuel injection system, which is characterized in that include the following steps,
Step 1 enters init state, sintering protection closed state after system electrification；
Step 2 meets and enters waiting condition, then enters and jump 1, jumps 1 as sintering protection wait state；If occur it is any into
Enter wait state condition to be unsatisfactory for, then enter and jump 2, jumps 2 to jump back to sintering protection closed state；
Step 3, into sintering protect wait state after, according to calibration select, diesel pilot injection before, in fuel gas buring or
After burning, and meet function and enable service condition, then enter and jump 3, jumps 3 as sintering protection open state；If occurring
Any function enables service condition and is unsatisfactory for, then enters and jump 4, jumps 4 to jump back to sintering protection wait state；
Step 4 after protecting open state into sintering, drives number or function enable time to reach initial alignment requirement, then into
Enter to jump 5, jumps 5 as sintering protection upper limit state；
Step 5 is, if spraying cycle terminates, to enter and jump into sintering protection open state to sintering protection upper limit state
6,6 are jumped to jump back to sintering protection wait state.
2. a kind of control method of dual fuel engine fuel injection system according to claim 1, which is characterized in that burn
Knot protection closed state is that nozzle sintering protection is inactive.
3. a kind of control method of dual fuel engine fuel injection system according to claim 1, which is characterized in that burn
Knot protection wait state is to meet anti-sintered function to enable condition, and function activation enters wait state, waits and reaches pilot injection
Angle prevents injection to be overlapped.
4. a kind of control method of dual fuel engine fuel injection system according to claim 1, which is characterized in that burn
Knot protection open state is that anti-sintered function enters enabled state, the small size pulse width signal of periodicity sending repeatedly drive fuel injector into
Row cooling.
5. a kind of control method of dual fuel engine fuel injection system according to claim 1, which is characterized in that burn
Knot protection upper limit state is that driving number or function enable time reach original definition requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810250010.9A CN110360018A (en) | 2018-03-26 | 2018-03-26 | A kind of control method of dual fuel engine fuel injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810250010.9A CN110360018A (en) | 2018-03-26 | 2018-03-26 | A kind of control method of dual fuel engine fuel injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360018A true CN110360018A (en) | 2019-10-22 |
Family
ID=68211899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810250010.9A Pending CN110360018A (en) | 2018-03-26 | 2018-03-26 | A kind of control method of dual fuel engine fuel injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110360018A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4115478A1 (en) * | 1990-05-17 | 1991-11-21 | Avl Verbrennungskraft Messtech | Injection nozzle for IC engine - has at least two adjacent valve needles which are operable alternatively |
| JPH08326629A (en) * | 1995-05-31 | 1996-12-10 | Mitsubishi Motors Corp | Fluid injection device |
| US20040211846A1 (en) * | 2003-04-25 | 2004-10-28 | Cummins Inc. | Fuel injector having a cooled lower nozzle body |
| CN1596339A (en) * | 2001-11-29 | 2005-03-16 | 三国股份有限公司 | Method for driving fuel injection pump |
| CN101886596A (en) * | 2009-05-13 | 2010-11-17 | 卡特彼勒公司 | The system and method that is used for inner cool fuel injector |
| US20110214643A1 (en) * | 2010-02-16 | 2011-09-08 | Cummins Intelletual Properties, Inc. | Fuel heating system and method |
| CN103075260A (en) * | 2013-01-23 | 2013-05-01 | 任一虎 | Oil injection control system of dual-fuel engine and oil injection control method of dual-fuel engine |
-
2018
- 2018-03-26 CN CN201810250010.9A patent/CN110360018A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4115478A1 (en) * | 1990-05-17 | 1991-11-21 | Avl Verbrennungskraft Messtech | Injection nozzle for IC engine - has at least two adjacent valve needles which are operable alternatively |
| JPH08326629A (en) * | 1995-05-31 | 1996-12-10 | Mitsubishi Motors Corp | Fluid injection device |
| CN1596339A (en) * | 2001-11-29 | 2005-03-16 | 三国股份有限公司 | Method for driving fuel injection pump |
| US20040211846A1 (en) * | 2003-04-25 | 2004-10-28 | Cummins Inc. | Fuel injector having a cooled lower nozzle body |
| CN101886596A (en) * | 2009-05-13 | 2010-11-17 | 卡特彼勒公司 | The system and method that is used for inner cool fuel injector |
| US20110214643A1 (en) * | 2010-02-16 | 2011-09-08 | Cummins Intelletual Properties, Inc. | Fuel heating system and method |
| CN103075260A (en) * | 2013-01-23 | 2013-05-01 | 任一虎 | Oil injection control system of dual-fuel engine and oil injection control method of dual-fuel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102414426B (en) | Controller of internal combustion engine | |
| US7243862B2 (en) | Apparatus and method for mode-switching fuel injector nozzle | |
| CN102312745B (en) | Diesel engine and control the method for this diesel engine | |
| JP5118839B2 (en) | In-cylinder direct injection internal combustion engine | |
| CN101251050B (en) | Multiple injection blend for direct injected engines | |
| US20050224605A1 (en) | Apparatus and method for mode-switching fuel injector nozzle | |
| CN101344046A (en) | Controller for direct injection engine | |
| CN102312744A (en) | The DENG that is used for vehicle | |
| CN102454500A (en) | Control system of internal combustion engine | |
| CN101484680B (en) | Fuel injection control method for a direct injection spark ignition internal combustion engine | |
| CN105526011A (en) | Methods and system for reactivating engine cylinders | |
| CN106068380A (en) | Multifuel engine system | |
| CN104196617A (en) | Fully variable valve supercharged diesel engine and control method thereof | |
| JP2018188990A (en) | Internal combustion engine | |
| EP1719903B1 (en) | Apparatus for mode-switching fuel injector nozzle | |
| CN104234844A (en) | Reduced Torque Variation for Engines with Active Fuel Management | |
| Husted et al. | Fuel efficiency improvements from lean, stratified combustion with a solenoid injector | |
| JP5035366B2 (en) | Fuel injection control device and internal combustion engine | |
| CN101457703A (en) | High-pressure co-rail diesel rotor engine control method | |
| CN101178034B (en) | Apparent torque reserve at idle for direct injected engines | |
| CN110360018A (en) | A kind of control method of dual fuel engine fuel injection system | |
| CN204140220U (en) | The piston of layering lean-combustion engine and motor and vehicle | |
| US20190040814A1 (en) | Fuel Injection Valve Control Device | |
| JP2011220184A (en) | Fuel injection device | |
| CN102767450B (en) | Low-speed system for dual-fuel outboard engine fuel supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |