CN111005826B - Electronic fuel pump control device, control method thereof and excavator - Google Patents
Electronic fuel pump control device, control method thereof and excavator Download PDFInfo
- Publication number
- CN111005826B CN111005826B CN201911388612.1A CN201911388612A CN111005826B CN 111005826 B CN111005826 B CN 111005826B CN 201911388612 A CN201911388612 A CN 201911388612A CN 111005826 B CN111005826 B CN 111005826B
- Authority
- CN
- China
- Prior art keywords
- fuel pump
- electronic fuel
- engine
- pressure
- main controller
- 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.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 232
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 abstract description 19
- 238000005086 pumping Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 34
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides an electronic fuel pump control device, a control method thereof and an excavator, which belong to the technical field of fuel pumps and comprise a main controller, a speed regulator and an engine, wherein the speed regulator and the engine are respectively and electrically connected with the main controller, the main controller is also externally connected with an electronic fuel pump, the electronic fuel pump is electrically connected with the speed regulator, the main controller receives a fuel pipe pressure signal of the electronic fuel pump, and the speed regulator is controlled to regulate the rotating speed of the electronic fuel pump according to the pressure signal. The rotating speed of the electronic fuel pump is regulated, so that the power of the electronic fuel pump is changed, the pumping capacity of the electronic fuel pump is changed, the oil pressure of a fuel pipe of the electronic fuel pump is changed, the pressure of the fuel pipe of the electronic fuel pump is transmitted to the main controller in real time, a closed-loop oil pressure control regulating system is formed, the oil pressure is accurately adjustable, the oil pressure is in a reasonable range, and the fatigue life of the high-pressure side of the engine and the electronic fuel pump is prolonged.
Description
Technical Field
The invention relates to the technical field of fuel pumps, in particular to an electronic fuel pump control device, a control method thereof and an excavator.
Background
Currently, in the industry, an electronic fuel pump of an engine of an engineering machine (an excavator, an excavating loader and the like) is mainly controlled by a key switch, and the control mode is as follows: when the key switch is electrified, the electronic fuel pump works all the time, and even if the engine is not started, the electronic fuel pump works all the time.
If the machine is electrified and the engine is not started for a long time, the electronic fuel pump works for a long time to cause the fuel pressure of the electronic fuel pump oil outlet pipeline to be too high, so that the working fatigue of parts such as a fuel pipe, the electronic fuel pump, an engine oil nozzle and the like can be caused, and the working stability of the system is influenced.
Disclosure of Invention
The invention aims to provide an electronic fuel pump control device, a control method thereof and an excavator, which can form closed-loop adjustment between the fuel pipe pressure of an electronic fuel pump and the rotating speed of the electronic fuel pump, so that the system of the electronic fuel pump control device works stably.
Embodiments of the present invention are implemented as follows:
an aspect of the embodiment of the invention provides an electronic fuel pump control device, which comprises a main controller, a speed regulator and an engine, wherein the speed regulator and the engine are respectively and electrically connected with the main controller, the main controller is also externally connected with an electronic fuel pump, the electronic fuel pump is electrically connected with the speed regulator, the main controller receives a fuel pipe pressure signal of the electronic fuel pump, and the speed regulator is controlled to regulate the rotating speed of the electronic fuel pump according to the pressure signal.
Optionally, the main controller receives the pressure signal through a pressure sensor connected to the fuel pipe.
Optionally, the speed regulator is a direct current motor speed regulator.
Optionally, the main controller further receives a rotation speed signal of the engine, and adjusts the rotation speed of the electronic fuel pump according to the rotation speed signal.
Optionally, the system further comprises a storage battery, wherein the storage battery is electrically connected with the generator of the engine and the main controller respectively, the generator of the engine is used for charging the storage battery, and the storage battery is used for supplying power to the electronic fuel pump control device.
Optionally, the system further comprises a display screen and an alarm, wherein the display screen and the alarm are respectively and electrically connected with the main controller.
Another aspect of the embodiment of the present invention provides an excavator, which includes an electronic fuel pump and the electronic fuel pump control device described above, wherein the electronic fuel pump is electrically connected to a main controller of the electronic fuel pump control device.
Another aspect of the embodiments of the present invention provides a method for controlling an electronic fuel pump control device, to which the above electronic fuel pump control device is applied, the method including receiving a power-on signal for supplying power to the electronic fuel pump control device; an engine identification code is obtained and a control signal is sent to the engine,and acquiring a starting pressure threshold value P of a fuel pipe corresponding to the engine a And an operating pressure threshold P b The method comprises the steps of carrying out a first treatment on the surface of the Receiving the real-time pressure P1 of the fuel pipe; according to the real-time pressure P1 and the start-up pressure threshold P a The speed regulator is driven to regulate the speed of the electronic fuel pump.
Optionally, the pressure is based on the real-time pressure P1 and the start-up pressure threshold P a The driving speed regulator is further used for regulating the speed of the electronic fuel pump and comprises the following steps: when the real-time pressure P1 is greater than or equal to the starting pressure threshold P a When the engine is started, the rotating speed of the engine, the voltage of a generator of the engine and the voltage of a storage battery are obtained; when the rotating speed of the engine is greater than zero and the voltage of the generator of the engine is greater than the voltage of the storage battery, the speed regulator is driven to regulate the speed of the electronic fuel pump.
Optionally, after the obtaining the rotation speed of the engine, the voltage of the generator of the engine and the system voltage, the method further includes: when the engine speed is equal to zero or the voltage of the generator of the engine is less than or equal to the voltage of the storage battery, comparing the real-time pressure P1 of the fuel pipe with the running pressure threshold value P b The method comprises the steps of carrying out a first treatment on the surface of the When the real-time pressure P1 of the fuel pipe is smaller than the operating pressure threshold value P b And sending an alarm signal according to the measured oil quantity and the preset oil quantity.
The beneficial effects of the embodiment of the invention include:
according to the electronic fuel pump control device, the control method thereof and the excavator, provided by the embodiment of the invention, through detecting the real-time pressure signal of the fuel pipe of the electronic fuel pump, the main controller controls the speed regulator to regulate the rotating speed of the electronic fuel pump according to the real-time pressure signal, so that the power of the electronic fuel pump is changed, the pumping capacity of the electronic fuel pump is changed, the oil pressure of the fuel pipe of the electronic fuel pump is changed, and the fuel pipe pressure of the electronic fuel pump is transmitted to the main controller in real time, so that a closed-loop oil pressure control regulating system is formed, the electronic fuel pump control device has a closed oil pressure control regulating function, the oil pressure is accurately regulated, and meanwhile, the oil pressure is regulated in a reasonable interval, and the high-pressure side of an engine and the fatigue resistance life of the electronic fuel pump are prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic circuit diagram of an electronic fuel pump control device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control device for an electronic fuel pump according to an embodiment of the present invention;
FIG. 3 is a flow chart of a control method of the electronic fuel pump control device provided by the embodiment of the invention;
fig. 4 is a logic diagram of a control method of the electronic fuel pump control device according to an embodiment of the present invention.
Icon: 10-a main controller; 11-a direct current motor speed regulator; 12-key switch; 13-an engine; 14-an alarm; 15-a display screen; 20-an electronic fuel pump; 21-fuel pipe; 22-pressure sensor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Example 1
Referring to fig. 1 and 2, the present embodiment provides an electronic fuel pump control device, which is mainly applied to engineering machinery equipment, such as an excavator, a backhoe loader, a loader, etc., and is used for positive and negative pressure control of a low-pressure fuel system. The system is based on the original engine 13 fuel system, a direct current motor speed regulator 11 module (L298N series direct current motor speed regulating module and the like) is added, and a fuel pipe 21 pressure sensor 22 and a corresponding strategy form the whole new system.
The electronic fuel pump control device of the embodiment comprises a main controller 10, a speed regulator, an engine 13 and a key switch 12, wherein the speed regulator, the engine 13 and the key switch 12 are respectively and electrically connected with the main controller 10, the main controller 10 is also externally connected with an electronic fuel pump 20, and the key switch 12 is used for controlling the power-on of the electronic fuel pump control device; the electronic fuel pump 20 is electrically connected with the speed regulator, and the main controller 10 receives a fuel pipe 21 pressure signal of the electronic fuel pump 20 and controls the speed regulator to regulate the rotation speed of the electronic fuel pump 20 according to the pressure signal.
It should be noted that, first, the key switch 12 is used to control the power-on of the electronic fuel pump control device, that is, after the key switch 12 is turned on, each device of the electronic fuel pump control device is powered on, the electronic fuel pump 20 is started to operate after being powered on, at this time, the engine 13 is also powered on and is in a power-on state, but the engine 13 is not started, that is, the rotation speed of the engine 13 is zero.
Secondly, the electronic fuel pump 20 starts to operate after being powered on, the fuel pipe 21 of the electronic fuel pump 20 has pressure, the main controller 10 can receive a fuel pipe 21 pressure signal of the electronic fuel pump 20, and judge whether the pressure is proper according to the pressure signal, and if the fuel pipe 21 pressure is too high, the working fatigue of the components such as the fuel pipe 21, the electronic fuel pump 20, the fuel nozzle of the engine 13 and the like can be caused, and the working stability of the system is influenced, so that the pressure is regulated and controlled.
Specifically, the main controller 10 controls the regulator to regulate the rotation speed of the electronic fuel pump 20, and as the rotation speed of the electronic fuel pump 20 is changed, the power of the electronic fuel pump 20 is changed, and the pumping capacity of the electronic fuel pump 20 is changed, so that the oil pressure of the oil pipe 21 (oil outlet pipe) of the electronic fuel pump 20 is changed, and the pressure of the oil pipe 21 of the electronic fuel pump 20 is transmitted to the main controller 10 (MCU) in real time, so that a closed-loop oil pressure control regulating system is formed, and the electronic fuel pump control device has the function of closed oil pressure control regulation.
Specifically, the main controller 10 receives a pressure signal through a pressure sensor 22 connected to the fuel pipe 21.
Third, the speed regulator may be a dc motor speed regulator 11, in which a speed regulating module is disposed in the dc motor speed regulator 11, and the speed regulating module may indirectly control the rotation speed of the electronic fuel pump 20 according to the output of PWM (pulse width modulation) waveform duty ratio.
The working principle of the electronic fuel pump control device provided by the embodiment of the invention is that the main controller 10 (MCU) collects the fuel pressure of the fuel pipe 21 (oil outlet pipe) of the electronic fuel pump 20 in real time through the pressure sensor 22, then the main controller 10 processes, analyzes and calculates the data, judges whether the fuel pressure is suitable at the moment, and then controls the output of the PWM (pulse width modulation) waveform duty ratio of the dc motor governor 11 through the PID algorithm (abbreviation of Proportional, integral and Differential) which is a control algorithm combining three links of Proportional, integral and Differential, thereby indirectly controlling the rotation speed of the electronic fuel pump 20. Since the rotation speed of the electronic fuel pump 20 is changed, the power of the electronic fuel pump 20 is changed, and simultaneously the pumping capacity of the electronic fuel pump 20 is changed, and further the oil pressure of the oil pipe 21 (oil outlet pipe) of the electronic fuel pump 20 is changed, and the pressure sensor 22 transmits the oil pressure of the oil pipe 21 (oil outlet pipe) of the electronic fuel pump 20 to the main controller 10 (MCU) in real time, the system forms a closed-loop oil pressure control and regulation system.
According to the electronic fuel pump control device provided by the embodiment of the invention, the main controller 10 controls the speed regulator to regulate the rotating speed of the electronic fuel pump 20 according to the real-time pressure signal by detecting the real-time pressure signal of the fuel pipe 21 of the electronic fuel pump 20, so that the power of the electronic fuel pump 20 is changed, the pumping capacity of the electronic fuel pump 20 is changed, the oil pressure of the fuel pipe 21 of the electronic fuel pump 20 is changed, and the pressure of the fuel pipe 21 of the electronic fuel pump 20 is transmitted to the main controller 10 in real time, so that a closed-loop oil pressure control regulating system is formed, the electronic fuel pump control device has a closed oil pressure control regulating function, the oil pressure is accurately regulated, the oil pressure is regulated in a reasonable range, and the high-pressure side of the engine 13 and the fatigue resistance life of the electronic fuel pump 20 are prolonged.
Still further, the main controller 10 also receives a rotational speed signal of the engine 13, and adjusts the rotational speed of the electronic fuel pump 20 according to the rotational speed signal.
The electronic fuel pump control device is powered on by the key switch 12, and the engine 13 is in a power-on state, but as long as the engine 13 is not started, the engine 13 does not work, and the rotation speed of the engine 13 is zero. When the engine 13 is started, the main controller 10 receives a rotation speed signal of the engine 13, and the rotation speed of the electronic fuel pump 20 can be adjusted according to the rotation speed signal of the engine 13.
Specifically, the engine 13 is provided with a rotation speed sensor, which can acquire the rotation speed of the engine 13 in real time, and the rotation speed sensor is electrically connected with the main controller 10 and transmits the rotation speed of the engine 13 to the main controller 10.
The engine 13 is provided with an electronic Encoder (ECU), each model of engine 13 corresponds to an identification code, after the engine 13 is powered on, the main controller 10 can obtain the identification code of the engine 13 through the electronic encoder, so as to obtain various parameters of the engine 13, such as rated rotation speed, rated power, and the like, so as to compare with the measured parameters.
The main controller 10 reads the rotation speed of the engine 13 uploaded by the rotation speed sensor of the engine 13 through the engine 13, and judges the expected pressure value of the fuel pipe 21 of the electronic fuel pump 20 required by the operation of the electronic fuel pump control device through the rotation speed of the engine 13I.e. the start pressure threshold P a And an operating pressure threshold P b And then the expected value is compared with the measured pressure value to reflect the working condition of the system.
The electronic fuel pump control device further comprises a storage battery, the storage battery is respectively and electrically connected with the engine 13 and the main controller 10, the engine 13 is used for charging the storage battery, the storage battery is used for supplying power to the electronic fuel pump control device, and the electronic fuel pump control device is powered on by starting through the key switch 12.
The electronic fuel pump control device further comprises a display screen 15 and an alarm 14, and the display screen 15 and the alarm 14 are respectively and electrically connected with the main controller 10. The display 15 may display data received and processed by the main controller 10 and the alarm 14 may be used to provide an alarm signal.
The display screen 15 further comprises a touch screen and a matrix keyboard, the main controller 10 can also adjust the pressure threshold value parameter of the fuel pipe 21 of the electronic fuel pump 20 through the soft keyboard on the touch screen, and display corresponding information parameters on the touch screen, or the main controller 10 modifies the pressure threshold value parameter of the fuel pipe 21 of the electronic fuel pump 20 through the input of the matrix keyboard. While corresponding data information is displayed on the display screen 15. The main controller 10 performs data processing at the same time and displays the relevant information on the display 15.
According to the electronic fuel pump control device provided by the embodiment of the invention, on the basis of the existing system, the pressure sensor 22 and the direct current motor speed regulator 11 module are added, the fuel pipe 21 pressure detection function is added, the function of adjusting the rotating speed of the electronic fuel pump 20 is added, the power of the electronic fuel pump 20 is also adjusted, the positive and negative pressure adjustment of a low-pressure fuel system can be realized, the closed loop controllability of the low-pressure fuel pressure is realized, the fuel pressure is adjusted in a reasonable interval, and the fatigue resistance life of the high-pressure side of the engine 13 and the electronic fuel pump 20 is prolonged; the expected value of the fuel pressure is regulated through the rotating speed of the engine 13, so that modularization, normalization and standardization of the electronic fuel pump 20 are realized; meanwhile, the problem of difficult start-up caused by the fuel system can be checked in the control strategy.
The embodiment of the invention also discloses an excavator, which comprises the electronic fuel pump 20 and the electronic fuel pump control device of the embodiment, wherein the electronic fuel pump 20 is electrically connected with the main controller 10 of the electronic fuel pump control device to form a set of finished oil pressure system, and the rotating speed of the electronic fuel pump 20 is subjected to closed-loop regulation through the electronic fuel pump control device.
The excavator includes the same structure and advantageous effects as those of the electronic fuel pump control device in the foregoing embodiment. The structure and the beneficial effects of the electronic fuel pump control device have been described in detail in the foregoing embodiments, and are not described herein.
Example two
As shown in fig. 3 and 4, an embodiment of the present invention provides a control method of an electronic fuel pump control device, to which the electronic fuel pump control device of the above embodiment is applied, the method includes:
s100: and receiving a power-on signal for supplying power to the electronic fuel pump control device.
The key switch 12 is activated to power the electronic fuel pump control, and the main controller 10 receives the power-on signal.
S110: acquiring an identification code of the engine 13 and acquiring a starting pressure threshold value P of the fuel pipe 21 corresponding to the engine 13 a And an operating pressure threshold P b 。
The engine 13 is provided with an electronic Encoder (ECU), each type of engine 13 corresponds to an identification code, after the engine 13 is powered on, the main controller 10 can obtain the identification code of the engine 13 through the electronic encoder, thereby obtaining parameters of the engine 13, such as obtaining a starting pressure threshold P of the fuel pipe 21 corresponding to the engine 13 a And an operating pressure threshold P b 。
The main controller 10 reads the rotation speed of the engine 13 uploaded by the rotation speed sensor of the engine 13 through the engine 13, and determines the minimum pressure value required by the fuel pipe 21 when the electronic fuel pump control device is started, namely a starting pressure threshold value P, through the rotation speed of the engine 13 a The method comprises the steps of carrying out a first treatment on the surface of the The expected pressure value of the fuel pipe 21 of the electronic fuel pump 20 required in operation, namely an operation pressure threshold value P b And then compared with the measured pressure value.
It should be noted that the number of the substrates,here the activation pressure threshold P a And an operating pressure threshold P b In addition to being obtained by the identification code of the engine 13, the desired starting pressure threshold P can be manually input according to actual needs a And an operating pressure threshold P b For example, a manual input mode may be selected when a particular test is required, and a desired activation pressure threshold P may be entered on the display 15 a And an operating pressure threshold P b After receiving the input values, the main controller 10 performs the subsequent steps.
S120: the real-time pressure P1 of the fuel pipe 21 is acquired.
The main controller 10 acquires the real-time pressure P1 of the fuel pipe 21 of the electronic fuel pump 20 through the pressure sensor 22.
The main controller 10 also receives the real-time rotational speed of the engine 13, and after power-up, the engine 13 is not started, and the rotational speed of the engine 13 is zero. Whether the engine 13 is started or not requires the operator to decide at his discretion, the operator fires and then starts the engine 13, but whether the engine 13 can be started or not after the firing depends on whether the engine 13 has a condition that the engine 13 can be started or not, and when the engine 13 has a fault, the engine 13 cannot be started successfully; other components within the system associated with engine 13 may fail, which may also result in engine 13 not being started.
S130: according to the real-time pressure P1 and the start-up pressure threshold P a The drive governor governs the speed of the electronic fuel pump 20.
When the real-time pressure P1 is smaller than the starting pressure threshold P a When the real-time pressure cannot reach the minimum value of the starting pressure, namely the system (the engine 13) cannot reach the starting pressure, the system cannot start to operate, and at the moment, the main controller 10 drives the speed regulator to regulate the speed of the electronic fuel pump 20. Typically increasing the rotational speed of the electronic fuel pump 20.
After the speed regulation (increasing the rotation speed of the electronic fuel pump 20), the real-time pressure P1 is continuously increased, and when the real-time pressure P1 reaches the starting pressure threshold value P a When the system reaches the starting pressure, the system has starting conditions, and the system can be started. If the engine 13 is successfully started at this time, the system operates normally.
When the real-time pressure P1 is greater than or equal to the starting pressureThreshold P a At this time, the engine 13 is controlled to start, and the rotation speed of the engine 13, the voltage of the generator of the engine 13, and the voltage of the battery are acquired. The generator of the engine 13 is connected to the battery to charge the battery.
When the rotation speed of the engine 13 is greater than zero (after the engine 13 is started), and the voltage of the generator of the engine 13 is greater than the voltage of the storage battery, the speed regulator is driven to regulate the speed of the electronic fuel pump 20. The speed regulation can be used for regulating the rotating speed of the electronic fuel pump 20 to be higher or lower, depending on actual requirements.
On the other hand, the speed regulating module of the direct current motor speed regulator 11 can be controlled according to the rotating speed of the engine 13 and the real-time pressure P1 to control the rotating speed of the electronic fuel pump 20 according to the output of the PWM waveform duty ratio.
If the system is finished, the key switch 12 is closed, and the system is powered off; if the system continues to operate, the system is recycled to the step of collecting the rotation speed of the engine 13 and the real-time pressure P1 of the fuel pipe 21, and the system operates normally.
When the rotational speed of the engine 13 is equal to zero, it indicates that the engine 13 is not actually started successfully; when the voltage of the generator of the engine 13 is equal to or lower than the voltage of the storage battery, the generator of the engine 13 is insufficient to supply power to the storage battery, the electronic fuel pump control device is insufficient in electric quantity, the engine 13 cannot be started, and the real-time pressure P1 of the fuel pipe 21 and the operation pressure threshold P at the moment are compared b 。
When the real-time pressure P1 of the fuel pipe 21 is smaller than the operating pressure threshold P b The fuel quantity of the electronic fuel pump 20 is compared.
When the oil quantity of the electronic fuel pump 20 is greater than or equal to 10% of the oil quantity preset value, the electronic fuel pump 20 is damaged, and a first alarm signal is sent to the main controller 10 to remind personnel of maintenance.
When the oil quantity of the electronic fuel pump 20 is smaller than 10% of the preset oil quantity value, the oil quantity is too small, and a second alarm signal is sent to the main controller 10 to remind personnel to refuel.
When the real-time pressure P1 of the fuel pipe 21 is greater than or equal to the operating pressure threshold P b Indicating that other reasons (not the contents of this embodiment, not described in detail herein) led to the engine13 can not be started, and sends a third alarm signal to the main controller 10 to remind personnel to check and overhaul.
The amount of fuel in the fuel tank of the electronic fuel pump 20 may be measured in real time by the liquid level sensor for measuring the amount of fuel in the fuel tank of the electronic fuel pump 20. The liquid level sensor is connected with the main controller 10 and feeds back the real-time oil quantity to the main controller 10.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The electronic fuel pump control device is characterized by comprising a main controller, a speed regulator and an engine, wherein the speed regulator and the engine are respectively and electrically connected with the main controller, the main controller is also externally connected with an electronic fuel pump, the electronic fuel pump is electrically connected with the speed regulator,
the main controller obtains the identification code of the engine and obtains the starting pressure threshold value of the fuel pipe corresponding to the engine,
the main controller receives a fuel pipe pressure signal of the electronic fuel pump, controls the speed regulator to regulate the rotating speed of the electronic fuel pump according to the acquired fuel pipe real-time pressure and the starting pressure threshold, when the fuel pipe real-time pressure is smaller than the starting pressure threshold, the system cannot be started, and controls the speed regulator to regulate the rotating speed of the electronic fuel pump so that the fuel pipe real-time pressure is continuously increased, and when the fuel pipe real-time pressure reaches the starting pressure threshold, the system is started.
2. The electronic fuel pump control of claim 1, wherein the main controller receives the pressure signal via a pressure sensor coupled to the fuel line.
3. The electronic fuel pump control of claim 1, wherein the speed governor is a direct current motor speed governor.
4. The electronic fuel pump control of claim 1, wherein the main controller further receives a rotational speed signal of the engine and adjusts the rotational speed of the electronic fuel pump based on the rotational speed signal.
5. The electronic fuel pump control of claim 1, further comprising a battery electrically connected to the generator of the engine and the main controller, respectively, the generator of the engine being configured to charge the battery, the battery being configured to power the electronic fuel pump control.
6. The electronic fuel pump control of claim 1, further comprising a display screen and an alarm, the display screen and the alarm being electrically connected to the main controller, respectively.
7. An excavator comprising an electronic fuel pump and an electronic fuel pump control device as claimed in any one of claims 1 to 6, the electronic fuel pump being electrically connected to a main controller of the electronic fuel pump control device.
8. A control method of an electronic fuel pump control apparatus to which the electronic fuel pump control apparatus according to any one of claims 1 to 6 is applied, characterized in that the method comprises:
receiving a power-on signal for supplying power to the electronic fuel pump control device;
acquiring an engine identification code and acquiring a starting pressure threshold value P of a fuel pipe corresponding to the engine a And an operating pressure threshold value P b ；
Acquiring the real-time pressure P1 of the fuel pipe;
according to the real-time pressure P1 and the start-upPressure threshold P a Driving a speed regulator to regulate the speed of the electronic fuel pump;
when the real-time pressure P1 is smaller than the starting pressure threshold P a When the system cannot be started, the speed regulator is driven to regulate the speed of the electronic fuel pump so as to continuously increase the real-time pressure P1, and when the real-time pressure P1 reaches the starting pressure threshold P a At this time, the system is started.
9. The control method of an electronic fuel pump control device according to claim 8, wherein the control method is based on a real-time pressure P1 and a start pressure threshold P a Driving the speed regulator to regulate the speed of the electronic fuel pump comprises:
when the real-time pressure P1 is greater than or equal to the starting pressure threshold P a When the engine is started, the rotating speed of the engine, the voltage of a generator of the engine and the voltage of a storage battery are obtained;
when the rotating speed of the engine is greater than zero and the voltage of the generator of the engine is greater than the voltage of the storage battery, the speed regulator is driven to regulate the speed of the electronic fuel pump.
10. The control method of the electronic fuel pump control apparatus according to claim 9, wherein after the engine rotational speed, the voltage of the generator of the engine, and the system voltage are obtained, the method further comprises:
when the engine speed is equal to zero or the voltage of the generator of the engine is less than or equal to the voltage of the storage battery, comparing the real-time pressure P1 of the fuel pipe with the running pressure threshold value P b ；
When the real-time pressure P1 of the fuel pipe is smaller than the operating pressure threshold value P b And sending an alarm signal according to the measured oil quantity and the preset oil quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388612.1A CN111005826B (en) | 2019-12-30 | 2019-12-30 | Electronic fuel pump control device, control method thereof and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388612.1A CN111005826B (en) | 2019-12-30 | 2019-12-30 | Electronic fuel pump control device, control method thereof and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111005826A CN111005826A (en) | 2020-04-14 |
| CN111005826B true CN111005826B (en) | 2024-03-29 |
Family
ID=70119580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911388612.1A Active CN111005826B (en) | 2019-12-30 | 2019-12-30 | Electronic fuel pump control device, control method thereof and excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111005826B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357067B (en) * | 2021-06-24 | 2022-07-12 | 中国第一汽车股份有限公司 | Electric fuel pump control method and device, electronic equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389689A (en) * | 2014-09-28 | 2015-03-04 | 安徽江淮汽车股份有限公司 | Automobile engine fuel oil supply system |
| CN105065158A (en) * | 2015-09-02 | 2015-11-18 | 上海盈智汽车零部件有限公司 | Fuel oil pump assembly capable of automatically regulating rotation speed and rotation speed regulation method thereof |
| CN105971753A (en) * | 2016-07-12 | 2016-09-28 | 广州杰治文电子科技有限公司 | Electronically controlled common rail gasoline injection system of internal combustion engine and gasoline injection control method of electronically controlled common rail gasoline injection system |
| CN107255050A (en) * | 2017-08-05 | 2017-10-17 | 中国科学院工程热物理研究所 | A kind of microminiature aero-engine fuel control system and method for starting-controlling |
| CN208431085U (en) * | 2018-08-27 | 2019-01-25 | 金城集团有限公司 | A kind of fuel oil supply system of fuel pressure feedback control |
| CN211116347U (en) * | 2019-12-30 | 2020-07-28 | 三一重机有限公司 | Electronic fuel pump control device and excavator |
-
2019
- 2019-12-30 CN CN201911388612.1A patent/CN111005826B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389689A (en) * | 2014-09-28 | 2015-03-04 | 安徽江淮汽车股份有限公司 | Automobile engine fuel oil supply system |
| CN105065158A (en) * | 2015-09-02 | 2015-11-18 | 上海盈智汽车零部件有限公司 | Fuel oil pump assembly capable of automatically regulating rotation speed and rotation speed regulation method thereof |
| CN105971753A (en) * | 2016-07-12 | 2016-09-28 | 广州杰治文电子科技有限公司 | Electronically controlled common rail gasoline injection system of internal combustion engine and gasoline injection control method of electronically controlled common rail gasoline injection system |
| CN107255050A (en) * | 2017-08-05 | 2017-10-17 | 中国科学院工程热物理研究所 | A kind of microminiature aero-engine fuel control system and method for starting-controlling |
| CN208431085U (en) * | 2018-08-27 | 2019-01-25 | 金城集团有限公司 | A kind of fuel oil supply system of fuel pressure feedback control |
| CN211116347U (en) * | 2019-12-30 | 2020-07-28 | 三一重机有限公司 | Electronic fuel pump control device and excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111005826A (en) | 2020-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7485979B1 (en) | Method and system for controlling power generator having hydraulic motor drive | |
| US7540141B2 (en) | Smart fuel control system | |
| US8473147B2 (en) | State of health indicator for a vehicle fuel delivery system | |
| EP2770119B1 (en) | Hybrid-driven hydraulic work machine | |
| KR20110089163A (en) | Method of controlling hybrid working machine and pump output limiting method for hybrid working machine | |
| US20140262354A1 (en) | Fire-Extinguishing System and Method for Operating Servo Motor-Driven Foam Pump | |
| EP3561300B1 (en) | Pulse width modulation motor control of pressurizer pump | |
| JPH0125892B2 (en) | ||
| CN111005826B (en) | Electronic fuel pump control device, control method thereof and excavator | |
| US20200340409A1 (en) | System and method for gas turbine engine control | |
| US11187321B2 (en) | Control system for auxiliary power source | |
| CN105307895B (en) | System and method for the power-balance of double-generator list DC link structure | |
| US20120101638A1 (en) | Optimum proportional-integral-derivative (pid) control method for adapting a process facility system | |
| CN211116347U (en) | Electronic fuel pump control device and excavator | |
| CN105128662B (en) | Hydraulic driving electric generator energy-conserving electricity generation system | |
| US9835160B2 (en) | Systems and methods for energy optimization for converterless motor-driven pumps | |
| CN108119373B (en) | Automatic testing method for frequency converter of water pump and frequency converter | |
| CN116290139A (en) | Pressure self-control device for foundation pile static load test and control method thereof | |
| JP4938304B2 (en) | Pump control method and water supply device | |
| CN106870226A (en) | Method and system for controlling the motor of petrolift | |
| KR101202871B1 (en) | Testing apparatus of electronic control generator for vehicle and method thereof | |
| CN108006022A (en) | Control method for the yaw control system of wind-driven generator, wind-driven generator and yaw control system | |
| JP4001573B2 (en) | Pump device | |
| CN110469516A (en) | The control method of water pump automatic constant-pressure is realized in a kind of detecting current load | |
| US20180154738A1 (en) | System and method for idle mitigation on a utility truck with an electrically isolated hydraulically controlled aerial work platform |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |