CN102817732B - A kind of diesel injection controlling method of duel fuel engine and device - Google Patents
A kind of diesel injection controlling method of duel fuel engine and device Download PDFInfo
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- CN102817732B CN102817732B CN201210334610.6A CN201210334610A CN102817732B CN 102817732 B CN102817732 B CN 102817732B CN 201210334610 A CN201210334610 A CN 201210334610A CN 102817732 B CN102817732 B CN 102817732B
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- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention discloses a kind of diesel injection controlling method of duel fuel engine, comprise: if motor runs under double fuel mode of operation, then according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time; Control described oil sprayer at described second time for spraying commencement of fuel injection, and control the oil spout in described second discharge time of described oil sprayer.The invention discloses a kind of diesel injection control gear of duel fuel engine.
Description
Technical field
The present invention relates to technical field of engines, particularly relate to a kind of diesel injection controlling method and device of duel fuel engine.
Background technique
Diesel oil/combustion gas duel fuel engine refers to using a small amount of diesel oil as light fluid, take combustion gas as the duel fuel engine of main fuel, this duel fuel engine has good Economy, emission performance and power character, is mainly divided into non-electric control diesel/combustion gas duel fuel engine and electric control diesel/combustion gas duel fuel engine.
For non-electric control diesel/combustion gas duel fuel engine, drive the control of throttle tooth bar realization to diesel injection by control step motor, controller is mainly utilized to obtain the movement range of throttle, once throttle action be detected, then control oil sprayer commencement of fuel injection, control according to the movement range of described throttle the displacement amount driving described throttle tooth bar again, thus realize the control to fuel injection quantity.
But in the above-mentioned methods, the diesel injection moment can not be controlled according to the operating conditions of system; Because stepper motor precision is lower, the accurate control to diesel injection amount can not be realized; Because stepper motor speed of response is slow, the control response of transient state diesel oil is poor; So, the accurate control of diesel injection amount can not be realized.In addition, owing to there is no corresponding sensor and electronic actuators, so cannot judge for fault, when diesel engine breaks down, the accurate control of diesel injection moment under fault mode and diesel injection amount can not be realized, long-play can cause adverse effect to motor, there is potential safety hazard.Visible, said method can not control the diesel injection moment and can not accurately control diesel injection amount, makes motor can not be operated in the optimum state at most of operating point.
Summary of the invention
In view of this, main purpose of the present invention is the diesel injection controlling method and the device that provide a kind of duel fuel engine, to realize the object of the accurate control to diesel injection moment and diesel injection amount.
For achieving the above object, the invention provides a kind of diesel injection controlling method of duel fuel engine, comprising:
If motor runs under double fuel mode of operation, then according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time;
Control described oil sprayer at described second time for spraying commencement of fuel injection, and control the oil spout in described second discharge time of described oil sprayer.
Preferably, in the above-mentioned methods, the described oil sprayer of described control at described second time for spraying commencement of fuel injection, and controls the oil spout in described second discharge time of described oil sprayer and comprises:
Gather the level signal of described oil sprayer positive pole, the moment that described level signal becomes high level from low level is described first time for spraying;
When the level signal of described oil sprayer positive pole is high level and arrives the second time for spraying under double fuel mode of operation, control to connect described oil sprayer negative pole, to make described oil sprayer commencement of fuel injection;
Record the discharge time of described oil sprayer;
When the discharge time recorded is second discharge time of described oil sprayer under double fuel mode of operation, control to disconnect described oil sprayer negative pole, stop oil spout to make described oil sprayer.
Preferably, said method also comprises:
Before the second time for spraying after the first time for spraying under pure diesel oil mode of operation and under double fuel mode of operation, control the fuel adopting combustion gas as described motor;
Before the first discharge time after the second discharge time under double fuel mode of operation terminates and under pure diesel oil mode of operation terminates, control the fuel adopting described combustion gas as described motor.
Preferably, said method also comprises:
If motor runs under pure diesel oil mode of operation, then control described oil sprayer at described first time for spraying commencement of fuel injection, and control the oil spout in described first discharge time of described oil sprayer.
Preferably, said method also comprises:
The position information of obtaining mode diverter switch;
Control described motor according to described position information and carry out working mode change between described pure diesel oil mode of operation and described double fuel mode of operation.
Present invention also offers a kind of diesel injection control gear of duel fuel engine, comprising:
Parameter acquisition module, when running under double fuel mode of operation for motor, according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time;
First control module, for controlling described oil sprayer at described second time for spraying commencement of fuel injection, and controls the oil spout in described second discharge time of described oil sprayer.
Preferably, in said apparatus, described first control module comprises:
Collecting unit, for gathering the level signal of described oil sprayer positive pole, the moment that described level signal becomes high level from low level is described first time for spraying;
First control unit, during for being high level when the level signal of described oil sprayer positive pole and arriving the second time for spraying under double fuel mode of operation, controls to connect described oil sprayer negative pole, to make described oil sprayer commencement of fuel injection;
Recording unit, for recording the discharge time of described oil sprayer;
Second control unit, during for being second discharge time of described oil sprayer under double fuel mode of operation when the discharge time recorded, controlling to disconnect described oil sprayer negative pole, stopping oil spout to make described oil sprayer.
Preferably, said apparatus also comprises:
Second control module, before the second time for spraying after the first time for spraying under pure diesel oil mode of operation and under double fuel mode of operation, controls the fuel adopting combustion gas as described motor;
3rd control module, before the first discharge time after terminating and under pure diesel oil mode of operation terminates, controls the fuel adopting described combustion gas as described motor for the second discharge time under double fuel mode of operation.
Preferably, said apparatus also comprises:
4th control module, when running under pure diesel oil mode of operation for motor, controls described oil sprayer at described first time for spraying commencement of fuel injection, and controls the oil spout in described first discharge time of described oil sprayer.
Preferably, said apparatus also comprises:
Pattern information acquisition module, for the position information of obtaining mode diverter switch;
Handover module, carries out working mode change for controlling described motor according to described position information between described pure diesel oil mode of operation and described double fuel mode of operation.
Visible, the diesel injection controlling method of duel fuel engine of the present invention and device, according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time; Control described oil sprayer at described second time for spraying commencement of fuel injection, and control the oil spout in described second discharge time of described oil sprayer.Consider the operating conditions that the first time for spraying under pure diesel oil mode of operation and the first discharge time and motor are current simultaneously, the second suitable time for spraying and the second discharge time is selected in described first discharge time, to control oil sprayer oil spout in described second discharge time, the present invention is on the basis not changing original pure diesel oil control mode, take current operating conditions into consideration, realize the accurate control to diesel injection moment and diesel injection amount, thus make motor operate in the optimum state under dual fuel mode, improve Economy.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the embodiment 1 of the diesel injection controlling method of duel fuel engine of the present invention;
Fig. 2 is that the diesel injection of duel fuel engine of the present invention controls the general frame;
Fig. 3 is the schematic flow sheet of the controlling method of time for spraying of the present invention and discharge time;
Fig. 4 is the schematic diagram that the present invention gathers diesel injection moment and diesel injection pulsewidth;
Fig. 5 is the schematic diagram that the present invention controls diesel injection moment and diesel injection pulsewidth;
Fig. 6 is the schematic flow sheet of the embodiment 2 of the diesel injection controlling method of duel fuel engine of the present invention;
Fig. 7 is the structural representation of the embodiment 1 of the diesel injection control gear of duel fuel engine of the present invention;
Fig. 8 is the structural representation of the embodiment 2 of the diesel injection control gear of duel fuel engine of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Shown in Figure 1, Fig. 1 is the schematic flow sheet of the embodiment 1 of the diesel injection controlling method of a kind of duel fuel engine provided by the invention, and the idiographic flow realizing described embodiment 1 is as follows:
Step 101: if motor runs under double fuel mode of operation, then according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time.
Described second time for spraying is less than or equal to described first time for spraying, and described second discharge time is less than or equal to described first discharge time.Wherein, described discharge time and diesel injection pulsewidth, refer to the high level time being loaded into diesel injector, namely the lasting injection time of oil sprayer.
Dissimilar motor has the oil sprayer cylinder number of varying number, in engine operation process, and alternately oil spout between each cylinder injector.Operating conditions by present engine determines by first time for spraying of each cylinder injector under pure diesel oil mode of operation and the first discharge time; And under double fuel mode of operation, be jointly determine the second time for spraying and the second discharge time according to the time for spraying of oil sprayer under pure diesel oil mode of operation and discharge time and current operating conditions.
Step 102: control described oil sprayer at described second time for spraying commencement of fuel injection, and control the oil spout in described second discharge time of described oil sprayer.
Shown in Figure 2, Fig. 2 is that the diesel injection of duel fuel engine provided by the invention controls the general frame, comprises main control unit, association's control unit and controlled device and engine fuel injector.Dissimilar motor has the oil sprayer cylinder number of varying number, suppose that engine fuel injector of the present invention has six cylinders, for each cylinder injector, main control unit is mainly used in controlling the diesel injection moment of oil sprayer under pure diesel oil mode of operation and diesel injection time, and main control unit and association's control unit are jointly for controlling the diesel injection moment of oil sprayer under double fuel mode of operation and diesel injection time.Wherein, association's control unit comprises acquisition module and control module, described acquisition module is for gathering the first time for spraying under pure diesel oil mode of operation and the first discharge time, described control module for control each cylinder injector at described second time for spraying commencement of fuel injection, and control the oil spout in the second discharge time of each cylinder injector.
Can adopt the step 102 that following methods realizes in the embodiment of the present invention 1, shown in Figure 3, Fig. 3 is the schematic flow sheet of the controlling method of time for spraying provided by the invention and discharge time, and concrete steps are as follows:
301: the level signal gathering described oil sprayer positive pole, the moment being become high level when described level signal from low level is first time for spraying of described oil sprayer under pure diesel oil mode of operation (i.e. commencement of fuel injection moment);
Shown in Figure 4, Fig. 4 is the schematic diagram of collection diesel injection moment provided by the invention and diesel injection time.The oil sprayer wire harness of main control unit drives high-end access to assist diesel injection moment and the diesel injection time acquisition module input end of control unit, gathered the level variable signal of described oil sprayer positive pole by the mode catching level rising edge, the moment that the level signal of oil sprayer positive pole becomes high level from low level is first time for spraying of oil sprayer under pure diesel oil mode of operation; In addition, recording the retention time of described oil sprayer positive pole high level, until the level signal of oil sprayer positive pole becomes low level moment from high level, namely arriving the first discharge time when capturing level trailing edge.
302: when the level signal of described oil sprayer positive pole is high level and arrives the second time for spraying under double fuel mode of operation, control to connect described oil sprayer negative pole, to make described oil sprayer commencement of fuel injection;
303: the discharge time recording described oil sprayer;
304: when the discharge time recorded is second discharge time of described oil sprayer under double fuel mode of operation, control to disconnect described oil sprayer negative pole, stop oil spout to make described oil sprayer.
Shown in Figure 5, Fig. 5 is the schematic diagram of control diesel injection moment provided by the invention and diesel injection pulsewidth, disconnect oil sprayer wire harness low side and introduce the control module of association's control unit diesel injection moment and diesel injection time, assisting control unit to calculate the second diesel injection moment under double fuel mode of operation and the second diesel injection pulsewidth according to the first time for spraying under pure diesel oil mode of operation and the first discharge time and present engine operating conditions, when above-mentioned acquisition module captures rising edge (namely oil sprayer positive pole becomes high level from low level) and arrives the second time for spraying under double fuel mode of operation, control module in association's control unit controls the control module drive circuit (break-make by controlling metal-oxide-semiconductor controls the negative pole being switched on or switched off described oil sprayer) connecting diesel injection moment and diesel injection time, and start the record of power-up time, when arriving the second discharge time when powering up, association's control unit closing control module drive circuit, thus the accurate control realized the diesel injection moment under double fuel mode of operation and diesel injection pulsewidth.
The above-mentioned oil sprayer drive end wire harness by main control unit is incorporated into association's control unit, association's control unit obtains diesel injection moment and the diesel injection pulsewidth of main control unit control by the moment and time gathering oil sprayer positive pole high level, and then extremely set diesel injection pulsewidth according to the original diesel injection pulsewidth of cut-out that the diesel injection moment and diesel oil substitution rate of assisting control unit setting are proportional, realize the accurate control to diesel injection moment and diesel injection amount
The diesel injection controlling method of duel fuel engine of the present invention, according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time; Control described oil sprayer at described second time for spraying commencement of fuel injection, and control the oil spout in described second discharge time of described oil sprayer.Consider the operating conditions that the first time for spraying under pure diesel oil mode of operation and the first discharge time and motor are current simultaneously, the second suitable time for spraying and the second discharge time is selected in described first discharge time, to control oil sprayer oil spout in described second discharge time, the present invention is on the basis not changing original pure diesel oil control mode, take current operating conditions into consideration, realize the accurate control to diesel injection moment and diesel injection amount, thus make motor operate in the optimum state under dual fuel mode, improve Economy.
Shown in Figure 6, Fig. 6 is the schematic flow sheet of the embodiment 2 of the diesel injection controlling method of a kind of duel fuel engine provided by the invention, and the idiographic flow of real described embodiment 2 is as follows:
601: the position information of obtaining mode diverter switch, between described pure diesel oil mode of operation and described double fuel mode of operation, carry out working mode change in order to control described motor according to described position information.
Can Design Mode diverter switch, arrange two and switch gears, described two switch gears corresponding pure diesel oil mode of operations and double fuel mode of operation respectively.
602: judge the mode of operation that described position information characterizes, when described position information characterize described motor run under pure diesel oil mode of operation time, perform step 503 to step 505; When described position information characterize described motor run under double fuel mode of operation time, perform step 506 to step 510.
603: according to the operating conditions of present engine, obtain first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time;
604: control described oil sprayer at the first time for spraying commencement of fuel injection, and accumulative discharge time;
605: after accumulative discharge time arrives the first discharge time, control oil sprayer stop oil spout, namely control the oil spout in described first discharge time of described oil sprayer;
606: according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time;
607: before the second time for spraying after the first time for spraying under pure diesel oil mode of operation and under double fuel mode of operation, control the fuel adopting combustion gas as described motor;
608: when arrival the second time for spraying, control described oil sprayer at described second time for spraying commencement of fuel injection, and accumulative discharge time;
609: after accumulative discharge time arrives the second discharge time, control oil sprayer stop oil spout, be namely control the oil spout in described second discharge time of described oil sprayer;
610: after the second discharge time under double fuel mode of operation terminates and before under pure diesel oil mode of operation, the first discharge time terminates, control the fuel adopting described combustion gas as described motor.
The diesel injection controlling method of duel fuel engine of the present invention, not only achieve the accurate control to diesel injection moment and diesel injection amount, also can obtain diesel injection amount according to the diesel injection moment under pure diesel fuel mode and diesel injection time, the diesel injection amount of the pure diesel fuel mode diesel injection amount deducted under dual fuel mode just can obtain the fuel injection amount substituted with combustion gas, then according to the conversion relation of combustion gas and diesel oil, can in the hope of the fuel gas injection amount of any operating mode, thus fuel gas injection pulsewidth can be obtained, so the work of Bench calibration can be saved, in addition, the key that the present invention can also realize pure diesel fuel mode and dual fuel mode switches, no matter under which kind of mode of operation, the control logic of main control unit is not affected, so can save car load staking-out work.
Shown in Figure 7, Fig. 7 is the structural representation of the embodiment 1 of the diesel injection control gear of a kind of duel fuel engine provided by the invention, described device comprises: parameter acquisition module 11, when running under double fuel mode of operation for motor, according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time; First control module 12, for controlling described oil sprayer at described second time for spraying commencement of fuel injection, and controls the oil spout in described second discharge time of described oil sprayer.
Described second time for spraying is less than or equal to described first time for spraying, and described second discharge time is less than or equal to described first discharge time.Wherein, described discharge time and diesel injection pulsewidth, refer to the high level time being loaded into diesel injector, namely the lasting injection time of oil sprayer.
Described first control module 12 comprises:
Collecting unit 121, for gathering the level signal of described oil sprayer positive pole, the moment that described level signal becomes high level from low level is described first time for spraying; First control unit 122, during for being high level when the level signal of described oil sprayer positive pole and arriving the second time for spraying under double fuel mode of operation, controls to connect described oil sprayer negative pole, to make described oil sprayer commencement of fuel injection; Recording unit 23, for recording the discharge time of described oil sprayer; Second control unit 24, during for being second discharge time of described oil sprayer under double fuel mode of operation when the discharge time recorded, controlling to disconnect described oil sprayer negative pole, stopping oil spout to make described oil sprayer.
The diesel injection control gear of invention duel fuel engine, consider the operating conditions that the first time for spraying under pure diesel oil mode of operation and the first discharge time and motor are current, the second suitable time for spraying and the second discharge time is selected in described first discharge time, to control oil sprayer oil spout in described second discharge time, the present invention is on the basis not changing original pure diesel oil control mode, take current operating conditions into consideration, realize the accurate control to diesel injection moment and diesel injection amount, thus make motor operate in the optimum state under dual fuel mode, improve Economy.
Shown in Figure 8, Fig. 8 is the structural representation of the embodiment 2 of the diesel injection control gear of a kind of duel fuel engine provided by the invention, and described device comprises:
Pattern information acquisition module 21, for the position information of obtaining mode diverter switch; Handover module 22, carries out working mode change for controlling described motor according to described position information between described pure diesel oil mode of operation and described double fuel mode of operation; Parameter acquisition module 23, when running under double fuel mode of operation for motor, according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time; Second control module 24, before the second time for spraying after the first time for spraying under pure diesel oil mode of operation and under double fuel mode of operation, controls the fuel adopting combustion gas as described motor; First control module 25, for controlling described oil sprayer at described second time for spraying commencement of fuel injection, and controls the oil spout in described second discharge time of described oil sprayer.3rd control module 26, before the first discharge time after terminating and under pure diesel oil mode of operation terminates, controls the fuel adopting described combustion gas as described motor for the second discharge time under double fuel mode of operation.4th control module 27, when running under pure diesel oil mode of operation for motor, controls described oil sprayer at described first time for spraying commencement of fuel injection, and controls the oil spout in described first discharge time of described oil sprayer.
The diesel injection control gear of duel fuel engine of the present invention, not only achieve the accurate control to diesel injection moment and diesel injection amount, also can obtain diesel injection amount according to the diesel injection moment under pure diesel fuel mode and diesel injection time, the diesel injection amount of the pure diesel fuel mode diesel injection amount deducted under dual fuel mode just can obtain the fuel injection amount substituted with combustion gas, then according to the conversion relation of combustion gas and diesel oil, can in the hope of the fuel gas injection amount of any operating mode, thus fuel gas injection pulsewidth can be obtained, so the work of Bench calibration can be saved, in addition, the key that the present invention can also realize pure diesel fuel mode and dual fuel mode switches.
Also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a diesel injection controlling method for duel fuel engine, is characterized in that, comprising:
If motor runs under double fuel mode of operation, then according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time, wherein, described second time for spraying is less than or equal to described first time for spraying, and described second discharge time is less than or equal to described first discharge time;
Control described oil sprayer at described second time for spraying commencement of fuel injection, and control the oil spout in described second discharge time of described oil sprayer;
Before the second time for spraying after the first time for spraying under pure diesel oil mode of operation and under double fuel mode of operation, control the fuel adopting combustion gas as described motor;
Before the first discharge time after the second discharge time under double fuel mode of operation terminates and under pure diesel oil mode of operation terminates, control the fuel adopting described combustion gas as described motor.
2. method according to claim 1, is characterized in that, the described oil sprayer of described control at described second time for spraying commencement of fuel injection, and controls the oil spout in described second discharge time of described oil sprayer and comprises:
Gather the level signal of described oil sprayer positive pole, the moment that described level signal becomes high level from low level is described first time for spraying;
When the level signal of described oil sprayer positive pole is high level and arrives the second time for spraying under double fuel mode of operation, control to connect described oil sprayer negative pole, to make described oil sprayer commencement of fuel injection;
Record the discharge time of described oil sprayer;
When the discharge time recorded is second discharge time of described oil sprayer under double fuel mode of operation, control to disconnect described oil sprayer negative pole, stop oil spout to make described oil sprayer.
3. method according to claim 1, is characterized in that, described method also comprises:
If motor runs under pure diesel oil mode of operation, then control described oil sprayer at described first time for spraying commencement of fuel injection, and control the oil spout in described first discharge time of described oil sprayer.
4. the method according to any one of claims 1 to 3, is characterized in that, described method also comprises:
The position information of obtaining mode diverter switch;
Control described motor according to described position information and carry out working mode change between described pure diesel oil mode of operation and described double fuel mode of operation.
5. a diesel injection control gear for duel fuel engine, is characterized in that, comprising:
Parameter acquisition module, when running under double fuel mode of operation for motor, according to first time for spraying of engine fuel injector under pure diesel oil mode of operation, the first discharge time and the current operating conditions of motor, obtain second time for spraying of described engine fuel injector under double fuel mode of operation and the second discharge time, wherein, described second time for spraying is less than or equal to described first time for spraying, and described second discharge time is less than or equal to described first discharge time;
First control module, for controlling described oil sprayer at described second time for spraying commencement of fuel injection, and controls the oil spout in described second discharge time of described oil sprayer;
Second control module, before the second time for spraying after the first time for spraying under pure diesel oil mode of operation and under double fuel mode of operation, controls the fuel adopting combustion gas as described motor;
3rd control module, before the first discharge time after terminating and under pure diesel oil mode of operation terminates, controls the fuel adopting described combustion gas as described motor for the second discharge time under double fuel mode of operation.
6. device according to claim 5, is characterized in that, described first control module comprises:
Collecting unit, for gathering the level signal of described oil sprayer positive pole, the moment that described level signal becomes high level from low level is described first time for spraying;
First control unit, during for being high level when the level signal of described oil sprayer positive pole and arriving the second time for spraying under double fuel mode of operation, controls to connect described oil sprayer negative pole, to make described oil sprayer commencement of fuel injection;
Recording unit, for recording the discharge time of described oil sprayer;
Second control unit, during for being second discharge time of described oil sprayer under double fuel mode of operation when the discharge time recorded, controlling to disconnect described oil sprayer negative pole, stopping oil spout to make described oil sprayer.
7. device according to claim 5, is characterized in that, described device also comprises:
4th control module, when running under pure diesel oil mode of operation for motor, controls described oil sprayer at described first time for spraying commencement of fuel injection, and controls the oil spout in described first discharge time of described oil sprayer.
8. the device according to any one of claim 5 to 7, is characterized in that, described device also comprises:
Pattern information acquisition module, for the position information of obtaining mode diverter switch;
Handover module, carries out working mode change for controlling described motor according to described position information between described pure diesel oil mode of operation and described double fuel mode of operation.
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| CN201210334610.6A CN102817732B (en) | 2012-09-11 | 2012-09-11 | A kind of diesel injection controlling method of duel fuel engine and device |
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| CN201210334610.6A CN102817732B (en) | 2012-09-11 | 2012-09-11 | A kind of diesel injection controlling method of duel fuel engine and device |
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| CN102072036A (en) * | 2011-01-17 | 2011-05-25 | 吕国怀 | Method and device for controlling fuel-gas ratio of dual-fuel engine |
| CN202140184U (en) * | 2011-06-24 | 2012-02-08 | 霸州市华威发动机技术有限公司 | Device for controlling fuel injection quantity of electric diesel/gas dual-fuel engine |
| CN102536477A (en) * | 2012-02-27 | 2012-07-04 | 胡永军 | Multi-fuel multi-rail type engine fuel supply control system and control method thereof |
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2012
- 2012-09-11 CN CN201210334610.6A patent/CN102817732B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401053A (en) * | 2000-02-11 | 2003-03-05 | 韦斯特波特研究公司 | Method and apparatus for dual fuel injection into an internal combustion engine |
| CN101861456A (en) * | 2007-09-18 | 2010-10-13 | T·巴登哈德斯塔夫有限公司 | Dual fuel engine control unit |
| CN102072036A (en) * | 2011-01-17 | 2011-05-25 | 吕国怀 | Method and device for controlling fuel-gas ratio of dual-fuel engine |
| CN202140184U (en) * | 2011-06-24 | 2012-02-08 | 霸州市华威发动机技术有限公司 | Device for controlling fuel injection quantity of electric diesel/gas dual-fuel engine |
| CN102536477A (en) * | 2012-02-27 | 2012-07-04 | 胡永军 | Multi-fuel multi-rail type engine fuel supply control system and control method thereof |
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| CN102817732A (en) | 2012-12-12 |
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