CN114837839B - Control method, control system, engine and generator - Google Patents
Control method, control system, engine and generator Download PDFInfo
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- CN114837839B CN114837839B CN202210617479.8A CN202210617479A CN114837839B CN 114837839 B CN114837839 B CN 114837839B CN 202210617479 A CN202210617479 A CN 202210617479A CN 114837839 B CN114837839 B CN 114837839B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
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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
- F02D43/00—Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging or exhaust-gas treatment
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
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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
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the technical field of control of an engine and a generator, and provides a control method for solving the problem that in the prior art, the service life of the generator is reduced due to overload in the use process of the generator, which comprises the following steps: s1, detecting an environment value, identifying the current maximum allowable power P0 and actively reporting the current maximum allowable power P0; s2, controlling the output power P of the generator/engine to be less than or equal to P0; s3, detecting an opening value of an engine throttle valve to open and judging whether the generator/engine is overloaded, and updating reported power P1, wherein P1=P0-200 when the generator/engine is overloaded; s4, repeating the steps S2 and S3 until the opening value is smaller than the opening early warning value or the detected opening value is smaller than the preset minimum opening value, and controlling the generator/generator to output according to the current reported power.
Description
Technical Field
The invention relates to the technical field of control of engines and generators, in particular to a control system, an engine and a generator.
Background
The gasoline engine is an engine which takes gasoline as fuel and converts internal energy into kinetic energy. Because the gasoline has small viscosity and quick evaporation, the gasoline can be sprayed into a cylinder by a gasoline injection system, and the gasoline is ignited by a spark plug after being compressed to reach a certain temperature and pressure, so that the gas expands to do work. After the engine is started, the generator is driven to generate electricity, and power output is performed. When a user uses the generator, the load is usually carried out according to the parameters of the generator, and then in the actual use process, especially in some special areas, the problem that the load of the generator is not matched with the actual output power can occur, so that the generator is overloaded, and the service life of the generator is influenced.
Disclosure of Invention
One of the objectives of the present invention is to provide a control method to solve the problem that in the prior art, the service life of a generator is reduced due to overload during the use of the generator.
The basic scheme provided by the invention is as follows: a control method comprising the steps of:
s1, detecting an environment value of an environment where a generator/engine is located, identifying the current allowable maximum power P0 from a preset power meter according to the environment value, and actively reporting the current allowable maximum power P0;
s2, controlling the output power P of the generator/engine to be less than or equal to P0 according to the reported current allowable maximum power P0;
s3, detecting an opening value of an engine throttle valve; comparing the detected opening value with a pre-stored opening early-warning value of a throttle valve with overload of the generator/engine, and when the compared opening value is smaller than or equal to the opening early-warning value, judging that the generator/engine is not overloaded currently, and continuously detecting the opening value of the throttle valve of the engine; when the opening value is larger than the opening early warning value, judging that the generator/engine is overloaded, and updating the reported power P1, wherein P1=P0-200;
s4, repeating the steps S2 and S3 until the opening value is smaller than the opening early warning value or the detected opening value is smaller than the preset minimum opening value, and controlling the generator/generator to output according to the current reported power.
The basic scheme has the beneficial effects that: because the output power of the generator/engine is controlled through the opening degree of the throttle valve, in some special environments, such as high-altitude environments, the air inflow under the actual condition has deviation from the calibrated air inflow, and the actual allowable output power of the engine can be reduced in different proportions, so that the problem of unmatched load and actual output power occurs. Therefore, in the scheme, the maximum power P0 which is allowed to be output currently by the generator/engine in the initial use period is obtained through detection of the environment, and whether the generator/engine is in an overload working condition is judged by combining with monitoring of a throttle valve in the running process of the generator/engine, and the maximum power which is allowed to be output by the generator/engine currently is corrected in time, so that the overload condition of the generator/engine can be effectively avoided, and the service life of the generator/engine can be prolonged.
Further, in S4, when the detected opening value is smaller than the preset minimum opening value, the fault reminding information is also reported. The beneficial effects are that: in the scheme, when the detected opening value is smaller than the minimum opening value, the current power shortage of the generator/engine is indicated, and fault reminding information is reported so as to remind a user of timely maintenance.
Further, in S1, the detected environmental value includes a current air pressure.
Further, in S3, in one detection period, when the ratio of the opening value to the opening early-warning value is compared to be greater than 50%, it is determined that the generator/engine is overloaded. The beneficial effects are that: in the scheme, the overload of the generator/engine is judged when the ratio of the compared opening value to the opening early-warning value exceeds 50%, so that the accuracy of the judging result can be improved.
The second object of the present invention is to provide a control system, which includes an environment sensor for detecting an environment value of an environment;
a throttle position sensor for detecting an opening value of a throttle opening;
the storage module is used for pre-storing power meters allowing maximum power calibrated in different environments and opening early-warning values of a throttle valve for overload of a generator/engine;
the main control CPU is used for calling the maximum allowable output power P0 corresponding to the detected environment value from a pre-stored power meter and controlling the generator/engine to output; and judging the overload state of the generator/engine according to the detected opening value of the throttle valve and a pre-stored opening early-warning value, and actively reducing the current allowable output power when the generator/engine is judged to be overloaded.
The beneficial effects are that: in the scheme, after the current environment is detected by the environment sensor and the opening value of the throttle valve is detected by the throttle valve position sensor, the main control CPU judges whether the generator/engine is overloaded or not, and the current allowable output power is actively regulated down when the generator/engine is overloaded, so that the overload condition of the generator/engine in the actual working condition can be effectively avoided, and the service life of the generator/engine can be prolonged.
Further, the main control CPU judges that the generator/engine is overloaded when comparing the proportion of the opening value larger than the opening early warning value in one detection period to be more than 50%. The beneficial effects are that: in the scheme, the overload of the generator/engine is judged only when the proportion of the opening value larger than the opening early warning value exceeds 50% in one detection period, and the accuracy of the judgment result can be improved.
Further, the master CPU down-regulates the current allowable output power p1=p0-200.
Further, the storage module is also pre-stored with the minimum opening value of the throttle valve of the generator/engine, and when the detected opening value is smaller than the preset minimum opening value, the main control CPU reports fault reminding information. The beneficial effects are that: in the scheme, when the detected opening value is smaller than the minimum opening value, the current power shortage of the generator/engine is indicated, and fault reminding information is reported so as to remind a user of timely maintenance.
Further, the environmental sensor is a barometric pressure sensor.
The third object of the present invention is to provide an engine, which includes an electronic injection system, and the electronic injection system is integrated with the control system.
The fourth object of the invention is to provide a generator, comprising the engine, wherein the main control CPU is powered by an external storage battery or winding.
Drawings
FIG. 1 is a flow chart of a control method, a control system, an engine and a generator according to an embodiment of the present invention;
fig. 2 is a block diagram of the module of the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
an example is substantially as shown in figure 1: a control method comprising the steps of:
s1, detecting an environment value of an environment where a generator/engine is located, identifying the current allowable maximum power P0 from a preset power meter according to the environment value, and actively reporting the current allowable maximum power P0; the environmental values include altitude and barometric pressure values, and because the altitude and the barometric pressure values correspond to each other, in this embodiment, when the environmental values are detected, the barometric pressure value of the environment where the barometric pressure sensor is located is collected; since the maximum power P0 allowed by the generators/engines of different models is different, one of the preset power tables is shown in the following table.
S2, controlling the output power P of the generator/engine to be less than or equal to P0 according to the reported current allowable maximum power P0;
s3, detecting an opening value of an engine throttle valve; comparing the detected opening value with a pre-stored opening early-warning value of a throttle valve with overload of the generator/engine, and when the compared opening value is smaller than or equal to the opening early-warning value, judging that the generator/engine is not overloaded currently, and continuously detecting the opening value of the throttle valve of the engine; in a detection period, when the ratio of the opening value larger than the opening early warning value exceeds 50%, judging that the generator/engine is overloaded, and updating the reported power P1, wherein P1=P0-200; in this embodiment, one detection period is set to 20s;
s4, repeating the steps S2 and S3 until the opening value is smaller than the opening early warning value or the detected opening value is smaller than the preset minimum opening value, and controlling the generator/generator to output according to the current reported power; and when the detected opening value is smaller than the preset minimum opening value, reporting fault reminding information.
As shown in fig. 2, based on the above control method, the present embodiment further discloses a control system, which includes an environmental sensor, configured to detect an environmental value of an environment where the environmental sensor is located; in this embodiment, the environmental sensor is a barometric sensor.
A throttle position sensor for detecting an opening value of a throttle opening;
the storage module is used for pre-storing a power meter allowing maximum power calibrated in different environments and an opening early-warning value of a throttle valve for overload of a generator/engine, and also pre-storing a minimum opening value of the throttle valve;
the main control CPU is used for calling the maximum allowable output power P0 corresponding to the detected environment value from a pre-stored power meter and controlling the generator/engine to output; the overload state of the generator/engine is judged according to the detected opening value of the throttle valve and a pre-stored opening early-warning value, and when the generator/engine is judged to be overloaded, the current allowable output power P1=P0-200 is actively regulated down; and when the detected opening value is smaller than the preset minimum opening value, reporting fault reminding information.
The embodiment also discloses an engine, which comprises an electronic injection system, wherein the electronic injection system is integrated with the control system. The engine is an internal combustion engine. In this embodiment, the main control CPU also transmits the maximum power currently allowed to be output by the engine to the external receiving device through RS485 or bank communication, and reports the current allowed output power of the generator to the user for knowing through the external receiving device, so as to remind the user to actively reduce the output power; or the receiving device is matched with a user load manager board, so that the generator/engine is actively avoided from being overloaded in use, the continuous normal operation of the terminal is ensured, and the receiving device can be a display instrument or the user load manager board.
The embodiment also discloses a generator, which comprises the engine, and the main control CPU supplies power through an external storage battery or a winding.
The specific implementation process is as follows:
s1, starting a generator/engine in a power-on mode, detecting the altitude and the air pressure of the current environment, identifying the current maximum allowable power P0 according to a power meter, and actively reporting the current maximum allowable power P0;
s2, the user load management home board controls the output power to be less than or equal to P0 according to the received allowable power information;
s3, monitoring the opening of a throttle valve, defaulting to the condition that a generator/engine is not overloaded when the opening of the throttle valve is smaller than a preset value, reporting that the allowable output power value is unchanged, and still being P0; when the opening of the throttle valve is larger than a preset value, defaulting to the condition that the generator/engine is overloaded, the reporting allowable value is reduced by 200W on the basis of the last time, and the reporting power is P1=P0-200; wherein the overload judging logic is as follows: in the 20S time period, the proportion of the throttle opening to the preset value exceeds 50 percent, and the overload is judged;
s4, the user load management home board controls the charging power to be less than or equal to P1 according to the received allowable power information;
s5, continuously monitoring the opening of the throttle valve, defaulting to the condition that the generator/engine is not overloaded when the opening of the throttle valve is smaller than a preset value, reporting that the allowable output power value is unchanged and still is P1; when the opening of the throttle valve is larger than a preset value, defaulting to the condition that the generator/engine is overloaded, the reporting allowable value is reduced by 200W on the basis of the last time, and the reporting power is P2=P1-200;
s6, the user load manager board controls the output power to be less than or equal to P2 according to the received allowable power information;
s7, continuously monitoring the opening of the throttle valve, defaulting to the condition that the generator/engine is not overloaded when the opening of the throttle valve is smaller than a preset value, reporting that the allowable output power value is unchanged, and still being P3; when the opening of the throttle valve is larger than a preset value, defaulting to the condition that the generator/engine is overloaded, the reporting allowable value is reduced by 200W on the basis of the last time, and the reporting power is P3=P2-200;
s8, the user load management home board controls the charging power to be less than or equal to P3 according to the received allowable power information; because the throttle opening value corresponding to the current power is smaller than the minimum opening value, the fault reminding information of insufficient power of the generator/engine is reported at the moment, and the user is allowed to continue to use.
S9, restarting the engine after stopping the generator/engine, resetting the main control CPU system, and re-executing the cycle.
The foregoing is merely exemplary of the present invention, and the specific structures and features well known in the art are not described in any way herein, so that those skilled in the art will be able to ascertain all prior art in the field, and will not be able to ascertain any prior art to which this invention pertains, without the general knowledge of the skilled person in the field, before the application date or the priority date, to practice the present invention, with the ability of these skilled persons to perfect and practice this invention, with the help of the teachings of this application, with some typical known structures or methods not being the obstacle to the practice of this application by those skilled in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (10)
1. A control method, characterized in that: the method comprises the following steps:
s1, detecting an environment value of an environment where a generator/engine is located, identifying the current allowable maximum power P0 from a preset power meter according to the environment value, and actively reporting the current allowable maximum power P0;
s2, controlling the output power P of the generator/engine to be less than or equal to P0 according to the reported current allowable maximum power P0;
s3, detecting an opening value of an engine throttle valve; comparing the detected opening value with a pre-stored opening early-warning value of a throttle valve with overload of the generator/engine, and when the compared opening value is smaller than or equal to the opening early-warning value, judging that the generator/engine is not overloaded currently, and continuously detecting the opening value of the throttle valve of the engine; when the opening value is larger than the opening early warning value, judging that the generator/engine is overloaded, and updating the reported power P1, wherein P1=P0-200;
s4, repeating the steps S2 and S3 until the opening value is smaller than the opening early warning value or the detected opening value is smaller than the preset minimum opening value, and controlling the generator/generator to output according to the current reported power.
2. The control method according to claim 1, characterized in that: and S4, when the detected opening value is smaller than the preset minimum opening value, reporting fault reminding information.
3. The control method according to claim 2, characterized in that: in S1, the detected environmental value includes the current air pressure.
4. A control method according to claim 3, characterized in that: in S3, in one detection period, when the ratio of the opening value larger than the opening early warning value exceeds 50%, the overload of the generator/engine is judged.
5. A control system, characterized by: use of a control method according to any one of claims 1-4;
the environment sensor is used for detecting the environment value of the environment;
a throttle position sensor for detecting an opening value of a throttle opening;
the storage module is used for pre-storing power meters allowing maximum power calibrated in different environments and opening early-warning values of a throttle valve for overload of a generator/engine;
the main control CPU is used for calling the maximum allowable output power P0 corresponding to the detected environment value from a pre-stored power meter and controlling the generator/engine to output; the overload state of the generator/engine is judged according to the detected opening value of the throttle valve and a pre-stored opening early-warning value, and when the opening value is smaller than or equal to the opening early-warning value, the generator/engine is judged to be not overloaded currently; and when the opening value is larger than the opening early warning value, judging that the generator/engine is overloaded, actively reducing the current allowable output power, and reducing the current allowable output power P1=P0-200 by the main control CPU.
6. The control system of claim 5, wherein: and when the main control CPU compares that the proportion of the opening value larger than the opening early warning value exceeds 50% in one detection period, the main control CPU judges that the generator/engine is overloaded.
7. The control system of claim 6, wherein: the storage module is also pre-stored with a minimum opening value of a generator/engine throttle valve, and when the detected opening value is smaller than the preset minimum opening value, the main control CPU reports fault reminding information.
8. The control system of claim 7, wherein: the environment sensor is an air pressure sensor.
9. The engine, including electronic fuel injection system, its characterized in that: the electronic injection system having integrated thereon a control system according to any one of claims 5-8.
10. The generator is characterized in that: the engine of claim 9, wherein the main control CPU is powered by an external storage battery or winding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210617479.8A CN114837839B (en) | 2022-06-01 | 2022-06-01 | Control method, control system, engine and generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210617479.8A CN114837839B (en) | 2022-06-01 | 2022-06-01 | Control method, control system, engine and generator |
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| CN114837839B true CN114837839B (en) | 2023-05-26 |
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| CN112324579A (en) * | 2020-11-02 | 2021-02-05 | 西南大学 | Method and system for controlling different-altitude power stability of internal combustion generator set |
| CN114274958A (en) * | 2021-12-15 | 2022-04-05 | 重庆嘉陵全域机动车辆有限公司 | Power following control method for hybrid all-terrain vehicle |
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| JP2008180197A (en) * | 2007-01-26 | 2008-08-07 | Mitsubishi Electric Corp | Engine control device |
| CN106121843A (en) * | 2016-08-20 | 2016-11-16 | 潍柴西港新能源动力有限公司 | A kind of natural gas engine ambient compensation closed loop control method and control system |
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