CN111120098A - Dual-fuel mode display and communication method and system - Google Patents
Dual-fuel mode display and communication method and system Download PDFInfo
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- CN111120098A CN111120098A CN202010240265.4A CN202010240265A CN111120098A CN 111120098 A CN111120098 A CN 111120098A CN 202010240265 A CN202010240265 A CN 202010240265A CN 111120098 A CN111120098 A CN 111120098A
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- 239000000446 fuel Substances 0.000 title claims abstract description 105
- 238000004891 communication Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims description 147
- 238000002347 injection Methods 0.000 claims description 47
- 239000007924 injection Substances 0.000 claims description 47
- 230000009471 action Effects 0.000 claims description 39
- 230000009977 dual effect Effects 0.000 claims description 27
- 238000012544 monitoring process Methods 0.000 claims description 20
- 239000002737 fuel gas Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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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
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses a dual-fuel mode display and communication method and system, which relate to the field of dual-fuel engines.
Description
Technical Field
The invention relates to the technical field of dual-fuel engines, in particular to a dual-fuel mode display and communication method and system.
Background
When the marine dual-fuel engine is actually matched, the marine dual-fuel engine has a real-time display function of a diesel mode and a dual-fuel mode, but different application parties have different requirements on the function. Such as: local ship inspection requirements: when the dual-fuel mode is displayed, gas is required to participate in combustion really; the client requires: in the dual-fuel mode, the gas injection is not stopped due to error reporting caused by gas pressure change, and the dual-fuel mode is exited; the requirements of a security system are as follows: when the engine needs to enter the dual-fuel mode, a signal is sent to the security system, and the security system starts gas intake again.
The requirements of the three are mutually contradictory, if the initial design can completely meet the requirements of local ship inspection, the gas pressure is monitored when the gas enters the dual-fuel mode, the gas pressure meets the conditions and can enter the dual-fuel mode, otherwise, the engine capable of reporting errors cannot enter the dual-fuel mode, but the dual-fuel engine is matched with the engine which is mostly to modify a ship, and when the engine is actually used by customers, the gas pressure can be frequently changed due to insufficient gasified gas of the vaporizer caused by insufficient water temperature, so that the gas pressure can be reported errors, and the dual-fuel mode is exited. To meet customer usage requirements, gas pressure changes should be excluded from entering the dual fuel mode condition.
In the discrimination logic of the dual-fuel mode, the gas supply is in the front, the entering mode is in the back, the requirement of the security system is to supply gas when the engine is about to enter the dual-fuel mode, and the discrimination logic is just opposite to the requirement of local ship inspection.
Wherein the dual-fuel engine: the engine is provided with two sets of fuel supply systems of diesel oil and natural gas, and can independently use the diesel oil or simultaneously use two types of fuel of the diesel oil and the natural gas. Diesel mode: mode in which the dual fuel engine is solely diesel-fueled. Dual fuel mode: the engine simultaneously uses a blended combustion mode of diesel oil and natural gas. The security system comprises: the system device is responsible for the safety detection of the whole ship, and is also responsible for the gas supply and the cut-off of the natural gas engine and monitoring the running state of the engine.
Disclosure of Invention
Aiming at the defects, the technical problems to be solved by the invention are as follows: the dual-fuel mode display and communication method and system can accurately display the running mode of the engine, avoid frequent switching of the running mode of the engine and improve performance.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a dual-fuel mode display and communication method is based on a dual-fuel mode display and communication system, wherein the dual-fuel mode display and communication system comprises a display unit;
the method comprises the following steps:
s1, judging whether the engine enters a dual-fuel mode;
s10, if yes, transmitting a first signal to a security system, controlling the gas electric control system to operate and monitor the working condition, and controlling the injection valve according to the working condition;
s11, if not, transmitting a second signal to the security system and generating a corresponding operation mode display signal;
s2, judging whether the injection valve is operated or not;
s20, if the action is performed, transmitting a third signal to a security system, and controlling the security system to start gas supply and then obtain gas pressure;
s21, if not, transmitting a fourth signal to the security system, and the security system controls to stop gas supply and generates a corresponding running mode display signal;
s3, judging whether the gas pressure is matched with a preset pressure threshold value or not;
s30, if the signals are matched, transmitting a fifth signal to a security system, and generating a corresponding operation mode display signal;
s31, if not, controlling the injection valve to close and generating a corresponding running mode display signal;
and S4, controlling the display unit to display according to the operation mode display signal.
Preferably, the S31 specifically includes the following steps:
if not, controlling a timer to start timing;
judging whether the timing time of the timer is greater than the preset time or not;
if not, repeatedly executing the step S2;
if the current value is greater than the preset value, generating a corresponding alarm signal, controlling the injection valve to close, and generating a corresponding operation mode display signal;
then, the S4 further includes:
and sending out a fault alarm signal according to the alarm signal.
Preferably, the display unit comprises a mode switching display component for displaying the die cutting switching state and a dual-fuel mode display component for displaying the dual-fuel mode state;
the S10 specifically includes:
if so, transmitting a first signal to a security system, controlling a gas electric control system to operate and monitor the working condition, controlling an injection valve according to the working condition, and generating a corresponding mode switching display signal;
the S11 specifically includes:
if not, transmitting a second signal to the security system, and generating a corresponding running mode display signal and a mode switching display signal;
then, the S4 includes:
controlling the mode switching display component to display according to the mode switching display signal;
and controlling the dual-fuel mode display assembly to display according to the running mode display signal.
Preferably, the display unit further comprises a gas action display component for displaying the gas action state;
the S20 specifically includes:
if yes, transmitting a third signal to a security system, generating a corresponding gas action display signal, controlling the gas system to start gas supply by the security system, and acquiring gas pressure;
the S21 specifically includes:
if not, transmitting a fourth signal to the security system, generating a corresponding gas action display signal and a corresponding operation mode display signal, and controlling the gas system to stop gas supply by the security system;
then, the S4 further includes:
and controlling the gas action display component to display according to the gas action display signal.
Preferably, the S1 includes:
acquiring a mode switching switch state;
judging whether the engine enters a dual-fuel mode or not according to the state of the mode switching switch;
if the mode selector switch is actuated, the engine is allowed to enter a dual fuel mode;
if the mode switch is not active, the engine does not enter the dual fuel mode.
Preferably, the control of the injection valve according to the working condition includes the following steps:
acquiring the rotating speed and the load of an engine;
checking a calibration table of a seat checking table according to engine conversion and load to obtain corresponding working conditions;
and controlling the injection valve to act or not act according to the working condition.
A dual-fuel mode display and communication system comprises an electronic control unit and a communication unit, wherein the electronic control unit is respectively and electrically connected with: the system comprises a mode switching monitoring unit, a safety protection system and a fuel gas electric control system, wherein the mode switching monitoring unit is used for judging whether an engine enters a dual-fuel mode or not, transmitting a first signal to the safety protection system according to a judgment result, controlling the fuel gas electric control system to operate and monitor a working condition, controlling an injection valve according to the working condition, or transmitting a second signal to the safety protection system, and generating a corresponding operation mode display signal; the gas action monitoring unit is used for judging whether the injection valve acts or not and transmitting a third signal to the security system according to a judgment result, the security system controls to start gas supply and then acquire gas pressure, or the security system transmits a fourth signal to the security system, the security system controls to stop gas supply and generates a corresponding operation mode display signal; the gas pressure monitoring unit is used for judging whether the gas pressure is matched with a preset pressure threshold value or not, transmitting a fifth signal to the security system according to a judgment result, and generating an operation mode display signal corresponding to a dual-fuel mode, or controlling the injection valve to be closed and generating an operation mode display signal corresponding to a pure diesel mode; and the display unit displays according to the running mode display signal.
The injection valve is characterized by further comprising a presetting unit electrically connected with the electric control unit, wherein the presetting unit is used for presetting the opening and closing states of the injection valve under each working condition and presetting a pressure threshold.
Preferably, the display unit comprises a mode switching display assembly, a gas action display assembly and a dual-fuel mode display assembly, and the mode switching display assembly, the gas action display assembly and/or the dual-fuel mode display assembly comprise LED lamps.
Preferably, the gas pressure alarm device further comprises a timer and an alarm unit, wherein the timer and the alarm unit are electrically connected with the electronic control unit, the timer is used for starting timing when the gas pressure is smaller than a preset pressure threshold value, and the alarm unit is used for giving an alarm when the timing time of the timer is larger than the preset time.
After the technical scheme is adopted, the invention has the beneficial effects that:
according to the dual-fuel mode display and communication method and system, whether the engine enters the dual-fuel mode is judged firstly; if the gas enters the security system, transmitting a first signal to the security system, controlling the gas electric control system to operate and monitor the working condition, and controlling the injection valve according to the working condition; otherwise, transmitting the second signal to a security system and generating a corresponding operation mode display signal; judging whether the injection valve acts or not; if the action transmits a third signal to the security system, the security system controls to start gas supply and then obtains gas pressure; otherwise, transmitting a fourth signal to the security system, and controlling the security system to stop gas supply and generate a corresponding operation mode display signal; then judging whether the gas pressure is matched with a preset pressure threshold value or not; if the signals are matched, transmitting a fifth signal to the security system, and generating an operation mode display signal corresponding to the dual-fuel mode; otherwise, controlling the injection valve to close and generating a corresponding running mode display signal; and finally, controlling a display unit to display according to the running mode display signal. Therefore, the invention separates the gas monitoring from the action of the injection valve, displays the running mode of the engine more accurately so as to control the engine more accurately, particularly, the gas is more accurately started and stopped to supply, the unstable working state of the engine and frequent switching of the running mode caused by the change of gas pressure are avoided, and the invention has the advantages of no hardware change, low cost and improved engine performance.
Drawings
FIG. 1 is a flow chart of a dual fuel mode display and communication method of the present invention;
FIG. 2 is a flow chart of the first embodiment;
fig. 3 is a schematic block diagram of the second embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
as shown in fig. 1 and 2, a dual fuel mode display and communication method is based on a dual fuel mode display and communication system, which includes a display unit;
the method comprises the following steps:
step S1, judging whether the engine enters a dual-fuel mode;
step S10, if yes (the engine is allowed to enter a dual-fuel mode), transmitting a first signal to a security system, controlling the gas electric control system to operate and monitor the working condition, and controlling the injection valve according to the working condition;
step S11, if not (the engine is not allowed to enter the dual-fuel mode, the mode is pure diesel mode), transmitting a second signal to the security system, and generating a corresponding operation mode display signal, wherein the operation mode display signal corresponds to the pure diesel mode;
step S2, judging whether the injection valve is operated; the step is carried out after the engine is allowed to enter a dual-fuel mode and a gas electric control system is operated;
step S20, if the injection valve is opened, transmitting a third signal to the security system, and controlling to start gas supply by the security system, namely controlling each valve on the gas pipeline to be opened by the security system to supply gas, and acquiring gas pressure after the gas is supplied;
step S21, if the injection valve is closed, transmitting a fourth signal to the security system, and controlling the security system to stop gas supply, namely controlling each valve of the gas pipeline to be closed by the security system to stop supply and generating a corresponding running mode display signal, wherein the running mode display signal corresponds to a pure diesel mode when the engine cannot enter a dual-fuel mode;
step S3, judging whether the gas pressure is matched with a preset pressure threshold value, wherein the step is carried out after the injection valve acts and the security system starts gas supply;
step S30, if the fuel gas pressure is matched within the pressure threshold value range, transmitting a fifth signal to the security system, and generating a corresponding operation mode display signal, wherein the operation mode display signal corresponds to a dual-fuel mode if the engine is indicated to enter the dual-fuel mode;
step S31, if the fuel gas pressure is not in the pressure threshold range, controlling the injection valve to close and generating a corresponding operation mode display signal, wherein the fuel gas pressure is abnormal, indicating that the engine exits from the dual-fuel mode and operates to the pure diesel mode, and the operation mode display signal is the pure diesel mode;
and step S4, controlling a display unit to display according to the running mode display signal, wherein the display content of the display unit comprises a dual-fuel mode and a pure fuel mode, different states are displayed by turning on and off the LED lamp, and different states can be distinguished by directly displaying characters on a display screen.
According to the method, the gas monitoring and the action of the injection valve are separated, so that the running mode of the engine is displayed more accurately, the engine is controlled more accurately, particularly, the gas is supplied more accurately when being started and stopped, the working state of the engine is not stable due to the change of gas pressure, the running mode is frequently switched, hardware is not changed, the cost is low, and the performance of the engine is improved; the contradiction between the engine running mode display, the customer requirement and the security system in the prior art is solved.
Step S31 of this example specifically includes the following steps:
if the gas pressure is not in the pressure threshold range, controlling a timer to start timing;
judging whether the timing time of the timer is greater than the preset time or not;
if not, repeatedly executing the step S2;
if the current value is greater than the preset value, generating a corresponding alarm signal, controlling the injection valve to close, and generating a corresponding operation mode display signal;
then, step S4 further includes:
and sending out a fault alarm signal according to the alarm signal.
Through the steps, a fault alarm is set so as to timely process faults and further improve the running performance of the engine.
In step S1, the method for determining whether the engine is in the dual fuel mode includes the following steps:
acquiring the state of a mode selector switch;
judging whether the engine enters a dual-fuel mode or not according to the state of the mode switching switch;
if the mode selector switch is actuated, the engine is allowed to enter a dual fuel mode;
if the mode switch is not actuated, the engine does not enter the dual fuel mode, i.e., the engine enters the pure diesel mode.
As shown in fig. 2 and 3, the display unit of this example includes a mode switching display assembly for displaying a mode switching state, a gas action display assembly for displaying a gas action state, and a dual fuel mode display assembly for displaying a dual fuel mode state; namely, the invention is provided with three state displays of mode switching, gas action and dual-fuel mode. After the method is adopted, the three states display the working state of the engine more accurately, the engine is also controlled more accurately, and particularly, the control on air supply and air stop is more accurate; the unstable working state of the engine caused by the change of the gas pressure is avoided, and the running mode is frequently switched.
Step S4 of this embodiment includes the following steps:
controlling a mode switching display component to display according to the mode switching display signal;
controlling the gas action display component to display according to the gas action display signal;
and controlling the dual-fuel mode display component to display according to the running mode display signal.
The status display is as follows:
step S1, judging whether the engine enters a dual-fuel mode;
step S10, if yes, transmitting a first signal to a security system, controlling the gas electric control system to operate and monitor the working condition, controlling the injection valve according to the working condition, generating a corresponding mode switching display signal, wherein the mode switching switch acts at the moment, the mode switching display signal corresponds to the mode allowing to enter the dual-fuel mode, and if the mode switching display component is an LED lamp, the LED lamp can be lightened to display the mode switching state;
step S11, if not, transmitting a second signal to the security system to generate a corresponding operation mode display signal and a mode switching display signal, wherein the mode switching switch does not act at the moment, the mode switching display signal is not allowed to enter the dual-fuel mode correspondingly, and the mode switching state can be displayed in a mode of turning off the LED lamp as described above; when the running mode display component comprises an LED lamp, the LED lamp can be turned off to display the state of the dual-fuel mode, and the engine is indicated to run in a pure diesel mode.
Step S2, judging whether the injection valve is operated;
step S20, if yes, transmitting a third signal to the security system, and generating a corresponding gas action display signal, wherein when the gas action display component comprises an LED lamp, the gas action state can be displayed in a manner of lighting the LED lamp; the security system controls the gas system to start gas supply and then obtains gas pressure;
step S21, if not, transmitting a fourth signal to the security system, and generating a corresponding gas action display signal and an operation mode display signal, wherein at the moment, the gas non-action state can be displayed in a mode of turning off an LED lamp, and the operation mode display assembly can display a dual-fuel mode state, namely the state that the engine exits the dual-fuel mode, by turning off the LED lamp; the security system controls the gas system to stop supplying gas.
In step S10, the method for controlling the injection valve according to the operating condition includes the following steps:
acquiring the rotating speed and the load of an engine;
according to the engine conversion and load difference seat calibration table, checking the corresponding working condition;
and controlling the injection valve to act or not act according to the working condition.
The gas working condition is calibrated by a seat calibration MAP in advance, namely a two-dimensional table calibration of the rotating speed and the load. The load can be estimated by parameters such as intake manifold intake pressure, and can also be directly measured by a power (torque) sensor.
Example two:
as shown in fig. 3, a dual-fuel mode display and communication system includes an electric control unit, a mode switching monitoring unit, a gas action monitoring unit, a gas pressure monitoring unit and a display unit, which are electrically connected to the electric control unit, wherein the electric control unit is also electrically connected to a security system and a gas electric control system.
The mode switching monitoring unit is used for judging whether the engine enters a dual-fuel mode or not, transmitting a first signal to the security system according to a judgment result, controlling the gas electric control system to operate and monitor the working condition, controlling the injection valve according to the working condition, or transmitting a second signal to the security system, and generating an operation mode display signal corresponding to a pure diesel mode.
The gas action monitoring unit is used for judging whether the injection valve acts or not, transmitting a third signal to the security system according to a judgment result, controlling the security system to start gas supply and then acquire gas pressure, or transmitting a fourth signal to the security system, controlling the security system to stop gas supply and generating an operation mode display signal corresponding to a pure diesel mode.
The gas pressure monitoring unit judges whether the gas pressure is matched with a preset pressure threshold value or not, transmits a fifth signal to the security system according to the judgment result, and generates an operation mode display signal corresponding to a dual-fuel mode, or controls the injection valve to be closed, and generates an operation mode display signal corresponding to a pure diesel mode.
The display unit displays according to the operating mode display signal, the display unit comprises a mode switching display assembly, a gas action display assembly and a dual-fuel mode display assembly, the mode switching display assembly, the gas action display assembly and/or the dual-fuel mode display assembly comprise LED lamps, the LED lamps can be colored LEDs such as green LED lamps and red LED lamps, and different states are displayed through the on and off of the LED lamps.
According to the dual-fuel mode display and communication system, the mode switching monitoring unit transmits the corresponding electric signal to the electric control unit according to the judgment result, transmits the first signal or the second signal to the security system, the electric control unit transmits the corresponding electric signal to the display unit and/or the gas electric control system according to the received electric signal, and the gas electric control system controls the injection valve to be switched according to the working condition.
The gas action monitoring unit transmits a corresponding electric signal to the electric control unit according to a judgment result, transmits a third signal or a fourth signal to the security system, the electric control unit transmits a corresponding electric signal to the display unit and the gas pressure detection unit according to the received electric signal, the gas pressure detection unit transmits an electric signal corresponding to the gas pressure to the electric control unit, and the security system controls whether the gas pipeline supplies gas or not according to the received electric signal.
The electric control unit transmits an electric signal corresponding to the gas pressure monitoring unit, the gas pressure detection unit transmits a corresponding electric signal to the electric control unit according to a comparison result, a fifth signal is transmitted to the security system, the electric control unit transmits a corresponding electric signal to the display unit and/or the gas electric control system according to the received electric signal, so that the display unit is controlled to display a corresponding state, the gas electric control system controls the injection valve to be closed, and the security system controls the gas pipeline to stop gas supply.
Therefore, the dual-fuel mode display and communication system can more accurately display the running mode of the engine so as to more accurately control the engine, particularly, the gas is more accurately started and stopped to be supplied, the phenomenon that the working state of the engine is unstable and the running mode is frequently switched due to the change of gas pressure is avoided, hardware is not changed, the cost is low, and the performance of the engine is improved; the contradiction between the engine running mode display, the customer requirement and the security system in the prior art is solved.
The automatic control device also comprises a presetting unit, a timer and an alarm unit which are electrically connected with the electric control unit, wherein the presetting unit is used for presetting the opening and closing states of the injection valve under each working condition and presetting a pressure threshold; the gas pressure alarm device comprises a gas pressure alarm unit, a timer and an alarm unit, wherein the timer is used for starting timing when the gas pressure is smaller than a preset pressure threshold value, and the alarm unit is used for giving an alarm when the timing time of the timer is larger than the preset time.
In addition, each display component can also use a display screen to display different states, and the display unit can simultaneously set mode switching, gas action and dual-fuel mode, or only set one or two modes. The system can be used for control no matter how many the devices are arranged.
In conclusion, the parameters acquired by the invention are not changed, hardware is not changed, only the actions of the injection valve and the gas pressure are acquired, but the requirements of all parties are completely met through new logic judgment and signal output; the mode switching, the gas action and the dual-fuel mode are displayed, so that the working state of the engine can be displayed more accurately, the engine can be controlled more accurately, and particularly, the gas supply and the gas stop are more accurate for gas supply; the unstable working state of the engine caused by the change of the gas pressure is avoided, and the running mode is frequently switched.
The above-described preferred embodiments of the present invention are not intended to be limiting, and any modifications, equivalents, of the dual fuel mode display and communication method and system, which are within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (10)
1. A dual-fuel mode display and communication method is characterized in that based on a dual-fuel mode display and communication system, the dual-fuel mode display and communication system comprises a display unit;
the method comprises the following steps:
s1, judging whether the engine enters a dual-fuel mode;
s10, if yes, transmitting a first signal to a security system, controlling the gas electric control system to operate and monitor the working condition, and controlling the injection valve according to the working condition;
s11, if not, transmitting a second signal to the security system and generating a corresponding operation mode display signal;
s2, judging whether the injection valve is operated or not;
s20, if the action is performed, transmitting a third signal to a security system, and controlling the security system to start gas supply and then obtain gas pressure;
s21, if not, transmitting a fourth signal to the security system, and the security system controls to stop gas supply and generates a corresponding running mode display signal;
s3, judging whether the gas pressure is matched with a preset pressure threshold value or not;
s30, if the signals are matched, transmitting a fifth signal to a security system, and generating a corresponding operation mode display signal;
s31, if not, controlling the injection valve to close and generating a corresponding running mode display signal;
and S4, controlling the display unit to display according to the operation mode display signal.
2. The dual-fuel mode display and communication method as claimed in claim 1, wherein the S31 comprises the following steps:
if not, controlling a timer to start timing;
judging whether the timing time of the timer is greater than the preset time or not;
if not, repeatedly executing the step S2;
if the current value is greater than the preset value, generating a corresponding alarm signal, controlling the injection valve to close, and generating a corresponding operation mode display signal;
then, the S4 further includes:
and sending out a fault alarm signal according to the alarm signal.
3. The dual fuel mode display and communication method of claim 1, wherein the display unit includes a mode switch display assembly for displaying a die cut switch status and a dual fuel mode display assembly for displaying a dual fuel mode status;
the S10 specifically includes:
if so, transmitting a first signal to a security system, controlling a gas electric control system to operate and monitor the working condition, controlling an injection valve according to the working condition, and generating a corresponding mode switching display signal;
the S11 specifically includes:
if not, transmitting a second signal to the security system, and generating a corresponding running mode display signal and a mode switching display signal;
then, the S4 includes:
controlling the mode switching display component to display according to the mode switching display signal;
and controlling the dual-fuel mode display assembly to display according to the running mode display signal.
4. The dual fuel mode display and communication method of claim 3, wherein the display unit further comprises a gas action display assembly for displaying a gas action status;
the S20 specifically includes:
if yes, transmitting a third signal to a security system, generating a corresponding gas action display signal, controlling the gas system to start gas supply by the security system, and acquiring gas pressure;
the S21 specifically includes:
if not, transmitting a fourth signal to the security system, generating a corresponding gas action display signal and a corresponding operation mode display signal, and controlling the gas system to stop gas supply by the security system;
then, the S4 further includes:
and controlling the gas action display component to display according to the gas action display signal.
5. The dual fuel mode display and communication method of claim 1, wherein the S1 includes:
acquiring a mode switching switch state;
judging whether the engine enters a dual-fuel mode or not according to the state of the mode switching switch;
if the mode selector switch is actuated, the engine is allowed to enter a dual fuel mode;
if the mode switch is not active, the engine does not enter the dual fuel mode.
6. The dual fuel mode display and communication method of claim 1, wherein the operating-based control of the injection valve comprises the steps of:
acquiring the rotating speed and the load of an engine;
checking a calibration table of a seat checking table according to engine conversion and load to obtain corresponding working conditions;
and controlling the injection valve to act or not act according to the working condition.
7. A dual-fuel mode display and communication system is characterized by comprising an electric control unit and a communication unit, wherein the electric control unit is respectively and electrically connected with:
the system comprises a mode switching monitoring unit, a safety protection system and a fuel gas electric control system, wherein the mode switching monitoring unit is used for judging whether an engine enters a dual-fuel mode or not, transmitting a first signal to the safety protection system according to a judgment result, controlling the fuel gas electric control system to operate and monitor a working condition, controlling an injection valve according to the working condition, or transmitting a second signal to the safety protection system, and generating a corresponding operation mode display signal;
the gas action monitoring unit is used for judging whether the injection valve acts or not and transmitting a third signal to the security system according to a judgment result, the security system controls to start gas supply and then acquire gas pressure, or the security system transmits a fourth signal to the security system, the security system controls to stop gas supply and generates a corresponding operation mode display signal;
the gas pressure monitoring unit is used for judging whether the gas pressure is matched with a preset pressure threshold value or not, transmitting a fifth signal to the security system according to a judgment result, and generating an operation mode display signal corresponding to a dual-fuel mode, or controlling the injection valve to be closed and generating an operation mode display signal corresponding to a pure diesel mode;
and the display unit displays according to the running mode display signal.
8. The dual fuel mode display and communication system of claim 7 further comprising a presetting unit electrically connected to the electronic control unit, the presetting unit being configured to preset the on/off state of the injection valve under each operating condition and to preset the pressure threshold.
9. The dual fuel mode display and communication system of claim 7 wherein the display unit includes a mode switch display assembly, a gas activity display assembly, and a dual fuel mode display assembly, the mode switch display assembly, the gas activity display assembly, and/or the dual fuel mode display assembly including LED lights.
10. The dual fuel mode display and communication system of claim 7 further comprising a timer electrically connected to the electronic control unit for starting timing when gas pressure is less than a preset pressure threshold and an alarm unit for alarming when the timer times for a time greater than a preset time.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749796A (en) * | 2020-05-14 | 2020-10-09 | 吉利汽车研究院（宁波）有限公司 | Fuel supply method, device, electronic equipment and storage medium |
| CN115217642A (en) * | 2022-06-30 | 2022-10-21 | 潍柴动力股份有限公司 | Control method and control device of dual-fuel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202023640U (en) * | 2011-04-19 | 2011-11-02 | 北京中兴恒和能源科技有限公司 | Dual-fuel engine for gas/diesel ship |
| CN103016168A (en) * | 2011-09-22 | 2013-04-03 | 北京易控凌博汽车电子技术有限公司 | Diesel engine/natural gas dual-fuel engine electric control system |
| US20150354473A1 (en) * | 2014-06-09 | 2015-12-10 | Caterpillar Inc | Gas pressure high and low detection |
| CN205559086U (en) * | 2016-03-08 | 2016-09-07 | 潍柴动力股份有限公司 | Dual -fuel engine system |
| CN108590854A (en) * | 2018-05-26 | 2018-09-28 | 潍柴重机股份有限公司 | A kind of control method of dual fuel engine instrument and the dual fuel engine equipped with the instrument |
| CN108930597A (en) * | 2018-07-02 | 2018-12-04 | 武汉理工大学 | Ship use intermediate speed dual fuel engine control method and system based on rapid control prototyping |
-
2020
- 2020-03-31 CN CN202010240265.4A patent/CN111120098B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202023640U (en) * | 2011-04-19 | 2011-11-02 | 北京中兴恒和能源科技有限公司 | Dual-fuel engine for gas/diesel ship |
| CN103016168A (en) * | 2011-09-22 | 2013-04-03 | 北京易控凌博汽车电子技术有限公司 | Diesel engine/natural gas dual-fuel engine electric control system |
| US20150354473A1 (en) * | 2014-06-09 | 2015-12-10 | Caterpillar Inc | Gas pressure high and low detection |
| CN205559086U (en) * | 2016-03-08 | 2016-09-07 | 潍柴动力股份有限公司 | Dual -fuel engine system |
| CN108590854A (en) * | 2018-05-26 | 2018-09-28 | 潍柴重机股份有限公司 | A kind of control method of dual fuel engine instrument and the dual fuel engine equipped with the instrument |
| CN108930597A (en) * | 2018-07-02 | 2018-12-04 | 武汉理工大学 | Ship use intermediate speed dual fuel engine control method and system based on rapid control prototyping |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749796A (en) * | 2020-05-14 | 2020-10-09 | 吉利汽车研究院（宁波）有限公司 | Fuel supply method, device, electronic equipment and storage medium |
| CN115217642A (en) * | 2022-06-30 | 2022-10-21 | 潍柴动力股份有限公司 | Control method and control device of dual-fuel engine |
| CN115217642B (en) * | 2022-06-30 | 2024-05-17 | 潍柴动力股份有限公司 | Control method and control device for dual-fuel engine |
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