CN112324579B - Method and system for controlling different-altitude power stability of internal combustion generator set - Google Patents
Method and system for controlling different-altitude power stability of internal combustion generator set Download PDFInfo
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- CN112324579B CN112324579B CN202011205219.7A CN202011205219A CN112324579B CN 112324579 B CN112324579 B CN 112324579B CN 202011205219 A CN202011205219 A CN 202011205219A CN 112324579 B CN112324579 B CN 112324579B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 30
- 239000001301 oxygen Substances 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000000446 fuel Substances 0.000 claims description 34
- 230000008859 change Effects 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 abstract 2
- 239000003921 oil Substances 0.000 abstract 2
- 238000011088 calibration curve Methods 0.000 abstract 1
- 239000002283 diesel fuel Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012549 training Methods 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
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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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- 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
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a method and a system for controlling power stability of an internal combustion generator set at different altitudes, wherein the system at least comprises an operation panel, a control system, a fuel oil detection and control system, an air detection and control system, a cylinder and a generator, the control system mainly comprises a combustion model, an air inlet temperature and air inlet pressure calibration curve, the fuel oil detection and control system comprises an oil inlet flow detection and oil injector opening degree control system, the air detection and control system comprises an air inlet flow, temperature and pressure detection and corresponding control systems thereof, aiming at the problems that when the internal combustion generator set is used in a high altitude area, black smoke is generated, the output power is seriously reduced, the internal combustion generator set is difficult to start and the like, and aiming at the environmental factors of oxygen concentration, environmental temperature, atmospheric pressure and the like at different altitudes, the air inlet amount, the air pressure and the like of the internal combustion engine are output according to set power, The method for accurately controlling the air inlet temperature, the air inlet pressure and the injection quantity of the diesel oil optimizes the fuel-air ratio and improves the combustion efficiency.
Description
Technical Field
The invention relates to the field of general internal combustion engines, in particular to a method and a system for controlling different altitude power stabilities of an internal combustion generator set.
Background
With the development of internal combustion power generation technology, small diesel generator sets produced in countries such as the United states, Sweden, Germany, Japan and the like have the advantages of product series, complete specification, advanced technology and the like, and are superior to other countries in terms of sales volume and performance level. Compared with foreign countries, although the yield can be compared with that of foreign countries, the technology and performance are always behind.
The power of the internal combustion generator set under the working condition of high altitude at present is divided into two types, namely imported and domestic, the imported internal combustion engine set mainly adopts Germany and Italy, has stable quality and strong environmental adaptability, can basically meet the use requirements of high altitude areas, but has the problems of long purchase period, high price of maintenance accessories and the like, is easily controlled by people at key moment, influences the use of troops, but the domestic generator has the problems of poor environmental adaptability, difficult starting, serious power reduction, poor reliability, black smoke emission and the like, and seriously influences the use of troops in combat training.
In the research process of improving the working efficiency of the internal combustion generator set, a turbocharging system is added to improve the power of an internal combustion engine under the low working condition of the internal combustion generator set, but the volume and the weight of the internal combustion generator set are obviously increased; the sound air distribution mechanism of the internal combustion engine is optimally designed to improve the efficiency of the diesel engine; the combustion process of the diesel engine is optimized through simulation, and the efficiency of the diesel engine is improved. However, the constraint of the environmental conditions of the internal combustion generator set is not considered, so that the improvement of the working efficiency of the internal combustion generator under the working condition of high altitude is not obvious.
Disclosure of Invention
The invention aims to provide a method for controlling different altitude power stabilities of an internal combustion generator set, and solves the problems that black smoke is emitted, the output power is seriously reduced, the internal combustion generator set is difficult to start and the like when the internal combustion generator set is used at high altitude in the prior art.
A further object of the first aspect of the invention is to improve the accuracy of the oil intake amount, the air intake temperature and the air intake pressure of the internal combustion generator set.
The invention aims at providing a control system for stabilizing power of an internal combustion generator set at different altitudes.
According to an object of a first aspect of the present invention, there is provided a method for controlling different altitude power stabilization of an internal combustion generator set, comprising the steps of:
s1: reading the set power parameters on the operation panel;
s2: calculating the required theoretical oil inlet amount and the theoretically required oxygen according to the combustion model;
s3: detecting the concentration of ambient oxygen, the ambient temperature and the atmospheric pressure;
s4: calculating theoretical air inflow, target air inlet temperature and target air inlet pressure of the internal combustion generator set according to the detected oxygen content of the air, the detected ambient temperature and the detected atmospheric pressure;
s5: searching a fuel injector opening, an air inlet valve opening, a glow plug temperature and a bypass supercharging channel valve opening which correspond to a theoretical fuel inlet quantity theoretical air inlet quantity, a target air inlet temperature and a target air inlet pressure of the internal combustion generator set from a preset module, wherein the preset module stores the corresponding relations of the theoretical fuel inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set and the fuel injector opening, the air inlet valve opening, the glow plug temperature and the bypass supercharging channel valve opening in advance;
s6: adjusting parameters of the oil injector, the air inlet valve, the glow plug and the bypass pressurizing channel valve according to the searched opening degree of the oil injector, the opening degree of the air inlet valve, the temperature of the glow plug and the opening degree of the bypass pressurizing channel valve so as to change the oil inlet amount, the air inlet temperature and the air inlet pressure of the internal combustion generator set;
optionally, after adjusting parameters of the fuel injector, the air inlet valve, the glow plug and the bypass pressurizing passage valve according to the found opening of the fuel injector, the opening of the air inlet valve, the temperature of the glow plug and the opening of the bypass pressurizing passage valve, the method further includes the following steps:
s7: detecting the actual oil inlet amount, the actual air inlet amount, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set;
s8: judging whether the actual oil inlet amount, the actual air inlet amount, the target air inlet temperature and the target air inlet pressure of the generator meet the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure;
and if the pressure difference does not meet the preset pressure difference, adjusting the parameters of the oil injector, the air inlet valve, the preheating plug and the bypass pressurizing channel valve again.
Optionally, if the parameter of the fuel injector, the intake valve, the glow plug, and the bypass boost channel valve is not adjusted, the method specifically includes:
when the actual oil inlet amount, the actual air inlet amount, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set are lower than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure, the opening degree of the oil injector, the opening degree of an air inlet valve, the temperature of a preheating plug and the opening degree of a bypass supercharging channel valve are increased by a first preset value;
and when the actual oil inlet amount, the actual air inlet amount, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set are higher than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure, the opening degree of the oil injector, the opening degree of an air inlet valve, the temperature of the glow plug and the opening degree of a bypass supercharging channel valve are reduced by a second preset value.
According to the purpose of the second aspect of the invention, the invention also provides a system for controlling the power stability of the internal combustion generator set at different altitudes.
Comprises a basic combustion unit consisting of an oil inlet channel, an air inlet channel, a throttle valve and a cylinder,
the air conditioner also comprises a bypass supercharging channel, a control device and a control device, wherein the bypass supercharging channel is provided with an air inlet, an air inlet channel and a throttle valve, an outlet of the bypass supercharging channel and the air inlet are connected with the air inlet channel, and an outlet of the air inlet channel is connected with the throttle valve;
the detection unit is used for acquiring parameters set on an operation panel of the internal combustion generator set, and the oxygen concentration, the ambient temperature and the atmospheric pressure of air in the altitude environment;
the control unit is in signal connection with the detection unit and is used for receiving the parameters set on the operation panel of the internal combustion generator set sent by the detection unit and the information such as the oxygen concentration, the air temperature and the atmospheric pressure of the air in the altitude environment, determining the theoretical oil inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set according to the parameters set on the operation panel of the internal combustion generator set and the information such as the oxygen concentration, the air temperature and the atmospheric pressure of the air in the altitude environment, searching the corresponding relation among the theoretical oil inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set, the opening of the oil injector, the opening of the air inlet valve, the temperature of the preheating plug and the opening of the bypass pressurizing channel valve from the preset storage module, and finally searching the corresponding relation among the opening of the oil injector, the opening of the preheating plug and the opening of the bypass pressurizing channel valve according to the searched opening, The oil injector, the air inlet valve, the glow plug and the bypass supercharging channel valve are subjected to parameter adjustment through the opening degree of the air inlet valve, the temperature of the glow plug and the opening degree of the bypass supercharging channel valve so as to change the oil inlet amount, the air inlet temperature and the air inlet pressure of the internal combustion generator set, wherein the preset storage module, the oil injector, the air inlet valve, the glow plug and the bypass supercharging channel valve are in signal connection with the control unit.
Optionally, the detection unit is further configured to detect an actual oil inlet amount, an actual air inlet temperature, and an actual air inlet pressure of the internal combustion generator set, and send the actual oil inlet amount, the actual air inlet temperature, and the actual air inlet pressure to the control unit;
and the control unit is also used for adjusting parameters of the oil injector, the air inlet valve, the preheating plug and the bypass pressurizing channel valve again when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set are judged not to meet the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure.
Optionally, the control unit is configured to, when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set are lower than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure, adjust the opening degree of the oil injector, the opening degree of the air inlet valve, the temperature of the glow plug and the opening degree of the bypass supercharging channel valve to be larger than a first preset value, and when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set are larger than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure, adjust the opening degree of the oil injector, the opening degree of the air inlet valve, the opening degree of the glow plug temperature and the opening degree of the bypass supercharging channel valve to be smaller than a second preset value.
The invention has the beneficial effects that: reading parameters set on an operation panel and information such as oxygen concentration, air temperature and atmospheric pressure of air in the altitude environment, determining theoretical oil inlet quantity, theoretical air inlet quantity, target air inlet temperature and target air inlet pressure of the internal combustion generator set according to the parameters set on the operation panel of the internal combustion generator set and the information such as oxygen concentration, air temperature and atmospheric pressure of air in the altitude environment, searching a corresponding relation between the theoretical oil inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set and the opening of an oil injector, the opening of an air inlet valve, the temperature of a glow plug and the opening of a bypass pressurizing channel valve, and finally searching the corresponding relation between the opening of the oil injector, the opening of the air inlet valve, the temperature of the glow plug and the opening of the bypass pressurizing channel valve, and the opening of the oil injector, And the air inlet valve, the preheating plug and the bypass pressurizing channel valve are subjected to parameter adjustment so as to change the oil inlet amount, the air inlet temperature and the air inlet pressure of the internal combustion generator set. According to the invention, the oil supply system and the air intake system of the internal combustion generator set are optimally controlled, and the oil inlet quantity, the air intake temperature and the air intake pressure are adjusted in real time according to the change of the environment, so that the fuel and the air of the internal combustion generator set can be fully mixed under different altitudes, and the working efficiency of the internal combustion generator set is improved.
Furthermore, the method detects the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set again after the oil injector, the air inlet valve, the glow plug and the bypass pressurizing channel valve are subjected to parameter adjustment, and performs parameter adjustment on the oil injector, the air inlet valve, the glow plug and the bypass pressurizing channel valve again when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set do not meet the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure. The invention can improve the accuracy of the oil inlet quantity, the air inlet temperature and the air inlet pressure of the internal combustion generator set according to the environmental conditions, thereby enabling the internal combustion generator set to mix the fuel and the air more uniformly in the plateau environment and improving the combustion efficiency.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic flow diagram of a method of power stabilization of an internal combustion engine generator set at different altitudes, according to one embodiment of the present invention;
FIG. 2 is a schematic flow diagram of a method of power stabilization of an internal combustion engine generator set at different altitudes, according to another embodiment of the present invention;
FIG. 3 is a schematic block diagram of a control system for power stabilization of an internal combustion engine generator set at different altitudes, according to one embodiment of the present invention;
in this embodiment: 1-an oil inlet channel, 2-a cylinder, 3-an air inlet channel, 4-a throttle valve, 5-an air inlet, 6-a bypass pressurizing channel port, 7-an oil injector, 8-a glow plug, 9-a bypass pressurizing channel valve, 10-an air inlet valve, 11-a fuel flow sensor, 12-an air inlet flow sensor, 13-an air inlet temperature sensor, 14-an air inlet pressure sensor, 15-an oxygen concentration sensor, 16-an environment temperature sensor, 17-an atmospheric pressure sensor, 18-a controller, 19-a preset module, 20-an external environment, 21-an operation panel and 22-a combustion model. .
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
Fig. 1 is a schematic flow chart of a method for stabilizing power of an internal combustion generator set at different altitudes according to one embodiment of the present invention. As shown, in one particular embodiment, the method of power stabilization for an internal combustion engine generator set at different altitudes generally comprises the steps of:
s1, reading the power parameter set on the operation panel;
s2, calculating the theoretical oil inlet quantity and the oxygen needed by theory according to the combustion model;
s3, detecting the ambient oxygen concentration, the ambient temperature and the atmospheric pressure;
s4, calculating theoretical air inflow, target air inlet temperature and target air inlet pressure of the internal combustion generator set according to the detected oxygen content of the air, the ambient temperature and the atmospheric pressure;
s5, searching the preset module for the fuel injector opening, the air inlet valve opening, the glow plug temperature and the bypass supercharging channel valve opening corresponding to the theoretical fuel inlet theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set, wherein the preset module stores the corresponding relations between the theoretical fuel inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set and the fuel injector opening, the air inlet valve opening, the glow plug temperature and the bypass supercharging channel valve opening in advance;
and S6, adjusting parameters of the oil injector, the air inlet valve, the glow plug and the bypass pressurizing channel valve according to the found opening of the oil injector, the opening of the air inlet valve, the temperature of the glow plug and the opening of the bypass pressurizing channel valve so as to change the oil inlet amount, the air inlet temperature and the air inlet pressure of the internal combustion generator set.
The invention controls the oil inlet quantity, the air inlet temperature and the air inlet pressure of the internal combustion generator set in real time by detecting and judging the plateau environment, does not change the structural characteristics of the existing internal combustion generator set, has simple structure and convenient operation, and effectively improves the working efficiency of the internal combustion generator set.
Furthermore, the oil supply system and the air intake system of the internal combustion generator set are optimally controlled, and the oil inlet quantity, the air inlet temperature and the air inlet pressure are adjusted in real time according to the change of the environment, so that the fuel and the air of the internal combustion generator set can be fully mixed under different altitudes, and the working efficiency of the internal combustion generator set is improved.
Fig. 2 is a schematic flow chart of a method for stabilizing power of an internal combustion generator set at different altitudes according to another embodiment of the present invention. As shown in fig. 2, in another embodiment, after adjusting parameters of the injector, the intake port opening, the intake port valve, the glow plug, the road pressurizing channel opening, and the bypass pressurizing channel valve according to the found injector opening, the method further includes the following steps:
s7, detecting the actual oil inlet quantity, the actual air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set;
s8, judging whether the actual oil inlet quantity, the actual air inlet quantity, the target air inlet temperature and the target air inlet pressure of the generator meet the theoretical oil inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure;
if not, adjusting parameters of the oil injector, the air inlet valve, the preheating plug and the bypass pressurizing channel valve again.
The invention can improve the accuracy of the oil inlet quantity, the air inlet temperature and the air inlet pressure of the internal combustion generator set at different altitudes, thereby uniformly mixing the fuel and the air and leading the combustion to be more sufficient.
Further, if the pressure difference does not meet the preset pressure difference, the parameters of the fuel injector, the air inlet valve, the glow plug and the bypass pressurizing channel valve are adjusted again, and the method specifically comprises the following steps:
when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set are lower than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure, the opening degree of an oil injector, the opening degree of an air inlet valve, the temperature of a glow plug and the opening degree of a bypass supercharging channel valve are adjusted to be larger than a first preset value, and when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set are larger than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure, the opening degree of the oil injector, the opening degree of the air inlet valve, the temperature of the glow plug and the opening degree of the bypass supercharging channel valve are adjusted to be smaller than a second preset value, wherein the first preset value and the second preset value are set according to specific working conditions of the engine.
That is, the present invention detects the actual oil inlet amount, the actual air inlet temperature, and the actual air inlet pressure of the internal combustion generator set again after adjusting the parameters of the oil injector, the air inlet valve, the glow plug, and the bypass supercharging channel valve, and finely adjusts the parameters of the oil injector opening, the air inlet valve opening, the glow plug temperature, and the bypass supercharging channel valve opening again when the actual oil inlet amount, the actual air inlet temperature, and the actual air inlet pressure of the internal combustion generator set deviate from the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature, and the target air inlet pressure. The invention can improve the accuracy of the oil inlet quantity, the air inlet temperature and the air inlet pressure of the internal combustion generator set according to the environmental conditions, thereby enabling the internal combustion generator set to mix the fuel and the air more uniformly in the plateau environment and improving the combustion efficiency.
Fig. 3 is a schematic structural diagram of a power stabilization control system of an internal combustion generator set at different altitudes according to one embodiment of the present invention.
As shown in fig. 3, in a specific embodiment, the present invention further provides a power stability control system for internal combustion generator sets at different altitudes, comprising a basic combustion structure consisting of an oil inlet passage 1, a cylinder 2, a throttle valve 4, and an air inlet passage 3, and further comprising an oil injector 7, a glow plug 8, a fuel flow sensor 11, an air inlet flow sensor 12, an air inlet valve 10, an air inlet temperature sensor 13, an ambient temperature sensor 16, an atmospheric pressure sensor 17, an air inlet pressure sensor 14, a bypass boost passage valve 9, and an oxygen concentration sensor 15, wherein the air inlet passage 3 consists of a bypass boost passage port 6 and an air inlet 5, the end of the bypass boost passage port 6 is connected with the end of the air inlet 5, and the end of the air inlet passage 3 is connected with the throttle valve 4. The operation panel 21 is used for setting output power required by the internal combustion generator set, the operation panel 21 is in signal connection with the control unit 18 and is used for reading power parameters set by the operation panel 21 and calculating theoretical oil inlet quantity and theoretical oxygen quantity required under the parameters according to the combustion model 22, the environment temperature sensor 16, the atmospheric pressure sensor 17 and the oxygen concentration sensor 15 are used for detecting the temperature, the atmospheric pressure and the oxygen concentration of the external environment 20 under the altitude, the environment temperature sensor 16, the atmospheric pressure sensor 17 and the oxygen concentration sensor 15 are all in signal connection with the control unit 18 and are used for receiving the temperature, the atmospheric pressure and the oxygen concentration information of the external environment 20 sent by the external environment temperature sensor 16, the atmospheric pressure sensor 17 and the oxygen concentration sensor 15 and determining the theoretical air inlet quantity, the theoretical air inlet quantity and the theoretical oxygen inlet quantity of the internal combustion generator set according to the received temperature, atmospheric pressure and oxygen concentration information of the external environment 20, Target intake air temperature and target intake air pressure, then searching the opening degree of the fuel injector 7, the opening degree of the air inlet valve 10, the temperature of the glow plug 8 and the opening degree of the bypass pressurizing channel valve 9 corresponding to the theoretical fuel inlet amount, the target intake air temperature and the target intake air pressure of the internal combustion generator set from a preset module 19, wherein the preset module 19 stores the corresponding relation among the theoretical fuel inlet amount, the opening degree of the fuel injector 7 corresponding to the target intake air temperature and the target intake air pressure, the opening degree of the air inlet valve 10, the temperature of the glow plug 8 and the opening degree of the bypass pressurizing channel valve 9 in advance, and finally performing parameter adjustment on the opening degrees of the glow plug 8 and the bypass pressurizing channel valve 9 according to the searched opening degrees of the fuel injector 7 and the air inlet valve 10, the fuel injection system is characterized in that the fuel injection quantity, the air intake temperature and the air intake pressure of the internal combustion generator set are changed, wherein the preset module 19, the fuel injector 7, the air inlet valve 10, the preheating plug 8 and the bypass pressurizing channel valve 9 are in signal connection with the control unit 18. The glow plug 8, the intake air temperature sensor 13, the intake air pressure sensor 14 and the intake air flow sensor 12 are arranged between the connecting part of the bypass supercharging channel opening 6 and the air inlet 5 and the throttle valve 4, the environment temperature sensor 16, the atmospheric pressure sensor 17 and the oxygen concentration sensor 15 are all arranged outside the internal combustion generator set, and the control unit 18 is an ECU controller.
The invention detects the actual inlet temperature, inlet pressure, actual inlet oil quantity and actual inlet air quantity through the inlet temperature sensor 13, the inlet pressure sensor 14, the fuel flow sensor 11 and the inlet air flow sensor 12 which are arranged between the connecting part of the bypass pressurizing passage opening 6 and the air inlet 5 and the throttle valve 4 and feed back to the control unit 18, the control unit 18 controls the opening degree of the oil injector 7, the opening degree of the air inlet valve 10, the temperature of the preheating plug 8 and the opening degree of the bypass pressurizing passage valve 9 according to flow, temperature and pressure signals, thereby controlling the inlet oil quantity, the inlet air temperature and the inlet air pressure entering the cylinder 2, and finally optimally controlling the inlet oil quantity, the inlet air temperature and the inlet air pressure of the internal combustion generator set according to different altitude environments of the internal combustion generator set. Further, the fuel can be fully combusted in the high-altitude environment, and the efficiency of the internal combustion generator set is improved.
Specifically, the fuel flow sensor 11, the intake air flow sensor 12, the intake air temperature sensor 13 and the intake air pressure sensor 14 are further configured to detect an actual oil intake amount, an actual air intake amount, an actual intake air temperature and an actual intake air pressure of the internal combustion generator set and send the detected actual oil intake amount, the actual air intake amount, the actual intake air temperature and the actual intake air pressure to the control unit 18, and the control unit 18 is further configured to perform parameter adjustment on the fuel injector 7, the intake valve 10, the glow plug 8 and the bypass pressurizing passage valve 9 again when it is determined that the actual oil intake amount, the actual air intake amount, the actual intake air temperature and the actual intake air pressure of the internal combustion generator set do not satisfy the theoretical oil intake amount, the theoretical air intake amount, the target intake air temperature and the target intake air pressure.
Further, the control unit 18 is configured to, when the actual oil intake amount, the actual air intake temperature, and the actual air intake pressure of the internal combustion generator set are lower than the theoretical oil intake amount, the theoretical air intake amount, the target air intake temperature, and the target air intake pressure, increase the opening of the oil injector 7, the opening of the air intake valve 10, the temperature of the glow plug 8, and the opening of the bypass supercharging channel valve 9 by a first preset value, and when the actual oil intake amount, the actual air intake temperature, and the actual air intake pressure of the internal combustion generator set are greater than the theoretical oil intake amount, the theoretical air intake amount, the target air intake temperature, and the target air intake pressure, decrease the opening of the oil injector 7, the opening of the air intake valve 10, the temperature of the glow plug 8, and the opening of the bypass supercharging channel valve 9 by a second preset value.
The invention fully considers the external factors of low oxygen content in the air and low temperature and atmospheric pressure in high altitude areas, and reasonably controls the oil supply system and the air intake system of the internal combustion generator set, thereby reducing the cost and power consumption of turbocharging and improving the combustion efficiency of the internal combustion generator set. And through the reasonable control of the oil inlet amount, the air inlet temperature and the air inlet pressure of the internal combustion generator set in different altitude environments, the problems of power reduction, black smoke emission, difficult starting and the like of the internal combustion generator set in a high altitude area can be solved, and the operability of the internal combustion generator set is greatly improved.
Thus, it should be appreciated by those skilled in the art that while various exemplary embodiments of the invention have been shown and described in detail herein, many other variations or modifications which are consistent with the principles of this invention may be determined or derived directly from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (6)
1. A method for controlling different altitude power stability of an internal combustion generator set is characterized in that: comprises the following steps:
s1: reading the set power parameters on the operation panel;
s2: calculating the required theoretical oil inlet amount and the theoretically required oxygen according to the combustion model;
s3: detecting the concentration of ambient oxygen, the ambient temperature and the atmospheric pressure;
s4: calculating theoretical air inflow, target air inlet temperature and target air inlet pressure of the internal combustion generator set according to the detected ambient oxygen concentration, ambient temperature and atmospheric pressure values;
s5: searching numerical values of an oil injector opening, an air inlet valve opening, a preheating plug temperature and a bypass supercharging channel valve opening corresponding to theoretical oil inlet quantity, theoretical air inlet quantity, target air inlet temperature and target air inlet pressure of the internal combustion generator set from a preset module, wherein the preset module stores corresponding relations of the theoretical oil inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set and the oil injector opening, the air inlet valve opening, the preheating plug temperature and the bypass supercharging channel valve opening in advance;
s6: and adjusting parameters of the oil injector, the air inlet valve, the glow plug and the bypass pressurizing channel valve according to the searched opening degree of the oil injector, the opening degree of the air inlet valve, the temperature of the glow plug and the opening degree of the bypass pressurizing channel valve so as to change the oil inlet amount, the air inlet temperature and the air inlet pressure of the internal combustion generator set.
2. The method for controlling power stability of an internal combustion generator set at different altitudes according to claim 1, wherein after parameter adjustment of the fuel injector, the intake valve, the glow plug and the bypass supercharging channel valve is performed according to the searched opening degree of the fuel injector, the opening degree of the intake valve, the temperature of the glow plug and the opening degree of the bypass supercharging channel valve, the method further comprises the following steps:
s7: detecting the actual oil inlet amount, the actual air inlet amount, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set;
s8: judging whether the actual oil inlet amount, the actual air inlet amount, the target air inlet temperature and the target air inlet pressure of the generator meet the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure;
if not, adjusting parameters of the oil injector, the air inlet valve, the preheating plug and the bypass pressurizing channel valve again.
3. The method for controlling power stability of an internal combustion generator set at different altitudes according to claim 2, wherein if not, the parameters of the fuel injector, the intake valve, the glow plug and the bypass supercharging channel valve are adjusted again, which specifically comprises:
when the actual oil inlet quantity, the actual air inlet quantity, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set are lower than the theoretical oil inlet quantity, the theoretical air inlet quantity, the target air inlet temperature and the target air inlet pressure, the opening degree of the oil injector, the opening degree of an air inlet valve, the temperature of a preheating plug and the opening degree of a bypass supercharging channel valve are increased by a first preset value;
and when the actual oil inlet amount, the actual air inlet amount, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set are higher than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure, the opening degree of the oil injector, the opening degree of an air inlet valve, the temperature of the glow plug and the opening degree of a bypass supercharging channel valve are reduced by a second preset value.
4. A power stability control system for internal combustion generator sets at different altitudes is characterized by comprising a basic combustion unit consisting of an oil inlet system, an air inlet system, a throttle valve and a cylinder,
the air conditioner also comprises a bypass supercharging channel, a control device and a control device, wherein the bypass supercharging channel is provided with an air inlet, an air inlet channel and a throttle valve, an outlet of the bypass supercharging channel and the air inlet are connected with the air inlet channel, and an outlet of the air inlet channel is connected with the throttle valve;
the detection unit is used for acquiring parameters set on an operation panel of the internal combustion generator set and the oxygen concentration, the air temperature and the atmospheric pressure of air in the altitude environment;
the control unit is in signal connection with the detection unit and is used for receiving the parameters set on the operation panel of the internal combustion generator set and the information such as the oxygen concentration, the air temperature and the atmospheric pressure of the air in the altitude environment sent by the detection unit, determining the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set according to the parameters set on the operation panel of the internal combustion generator set and the information such as the oxygen concentration, the air temperature and the atmospheric pressure of the air in the altitude environment, searching the corresponding relation among the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure of the internal combustion generator set from the preset module, and finally searching the corresponding relation among the opening of the oil injector, the opening of the air inlet valve, the temperature of the preheating plug and the opening of the bypass pressurizing channel valve according to the searched opening of the oil injector, The oil injector, the air inlet valve, the glow plug and the bypass supercharging channel valve are subjected to parameter adjustment through the opening degree of the air inlet valve, the temperature of the glow plug and the opening degree of the bypass supercharging channel valve so as to change the oil inlet amount, the air inlet temperature and the air inlet pressure of the internal combustion generator set, wherein the preset module, the oil injector, the air inlet valve, the glow plug and the bypass supercharging channel valve are in signal connection with the control unit.
5. The system for controlling power stability of an internal combustion generator set at different altitudes as defined in claim 4,
the detection unit is also used for detecting the actual oil inlet quantity, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set and sending the actual oil inlet quantity, the actual air inlet temperature and the actual air inlet pressure to the control unit;
and the control unit is also used for adjusting parameters of the oil injector, the air inlet valve, the preheating plug and the bypass pressurizing channel valve again when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set are judged not to meet the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure.
6. The system for controlling power stabilization of an internal combustion generator set at different altitudes as defined in claim 5,
the control unit is configured to adjust the opening of the oil injector, the opening of the air inlet valve, the temperature of the glow plug and the opening of the bypass supercharging channel valve to be larger by a first preset value and adjust the opening of the oil injector, the opening of the air inlet valve, the temperature of the glow plug and the opening of the bypass supercharging channel valve to be smaller by a second preset value when the actual oil inlet amount, the actual air inlet temperature and the actual air inlet pressure of the internal combustion generator set are larger than the theoretical oil inlet amount, the theoretical air inlet amount, the target air inlet temperature and the target air inlet pressure.
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| CN116184840B (en) * | 2023-04-27 | 2023-07-07 | 哈尔滨电机厂有限责任公司 | Micro-supercharging self-adaptive adjusting method, system and storage medium for hydraulic generator |
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| CN201972796U (en) * | 2011-03-10 | 2011-09-14 | 重庆长安伟世通发动机控制系统有限公司 | Automatic control device for air-fuel ratio of starting of electronic fuel injection engine under different elevation conditions |
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