CN114837839A - Control method and system, engine and generator - Google Patents
Control method and system, engine and generator Download PDFInfo
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- CN114837839A CN114837839A CN202210617479.8A CN202210617479A CN114837839A CN 114837839 A CN114837839 A CN 114837839A CN 202210617479 A CN202210617479 A CN 202210617479A CN 114837839 A CN114837839 A CN 114837839A
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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 engines and generators, and provides a control method for solving the problem that the service life of a generator is shortened due to overload in the use process of the generator in the prior art, which comprises the following steps: s1, detecting an environment value, identifying the currently allowed maximum power P0 and actively reporting; s2, controlling the output power P of the generator/engine to be less than or equal to P0; s3, detecting the opening value of the throttle valve of the engine and judging whether the generator/engine is overloaded or not, and updating the reported power P1 when the generator/engine is overloaded, wherein P1= P0-200; and S4, repeating the steps S2 and S3 until the opening degree value is smaller than the opening degree early warning value or the detected opening degree value is smaller than the preset minimum opening degree 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 the cylinder by a gasoline injection system, and after the gasoline is compressed to reach a certain temperature and pressure, the gasoline is ignited by a spark plug to ensure that the gas expands to do work. After the engine is started, the generator is driven to generate electricity, and power is output. When a user uses the generator, the generator is usually loaded according to generator parameters, and then in the actual use process, especially when the generator is used 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 in the prior art that the service life of the 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 the environment where the generator/engine is located, identifying the currently allowed maximum power P0 from a preset power meter according to the environment value, and actively reporting;
s2, controlling the output power P of the generator/engine to be less than or equal to P0 according to the reported currently allowed maximum power P0;
s3, detecting the opening value of the throttle valve of the engine; comparing the detected opening degree value with a pre-stored opening degree early warning value of a generator/engine overloaded throttle valve, judging that the generator/engine is not overloaded currently when the opening degree value is less than or equal to the opening degree early warning value, and continuously detecting the opening degree value of the engine throttle valve; when the opening degree value is larger than the opening degree early warning value, judging that the generator/engine is overloaded, and updating the reported power P1, wherein P1 is P0-200;
and S4, repeating the steps S2 and S3 until the opening degree value is smaller than the opening degree early warning value or the detected opening degree value is smaller than the preset minimum opening degree 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 by the opening degree of the throttle valve, in some special environments, such as high altitude environments, the air intake amount under the actual condition has deviation from the calibrated air intake amount, the actual allowable output power of the engine can be reduced in different proportions, and the problem that the load is not matched with the actual output power occurs. Therefore, in the scheme, the maximum power P0 which is currently allowed to be output by the generator/engine at the initial stage of use is obtained through detection of the environment, and whether the generator/engine is in an overload working condition is judged by combining monitoring of the throttle valve in the running process of the generator/engine, so that the maximum power which is currently allowed to be output by the generator/engine is corrected in time, 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 degree value is smaller than the preset minimum opening degree value, a fault notification message is also reported. Has the advantages 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 also reported to remind a user of timely overhauling.
Further, in S1, the detected environment value includes the current air pressure.
Further, in S3, in one detection period, when the ratio of the opening degree value greater than the opening degree warning value exceeds 50%, it is determined that the generator/engine is overloaded. Has the advantages that: in the scheme, the generator/engine overload is judged only when the proportion that the opening degree value is larger than the opening degree early warning value exceeds 50% through comparison, and the accuracy of the judgment result can be improved.
The second purpose of the invention is to provide a control system, which comprises an environment sensor 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 prestored with a power meter which allows the maximum power and is calibrated in different environments and an opening early warning value of a throttle valve overloaded by a generator/engine;
the main control CPU is used for calling the allowed maximum output power P0 corresponding to the detected environment value from a prestored 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 adjusting the current allowable output power when the generator/engine is judged to be overloaded.
Has the advantages that: in the scheme, after the current environment is detected by the environment sensor and the opening value of the throttle is detected by the throttle position sensor, the main control CPU judges whether the generator/engine is overloaded or not, and actively adjusts the current allowable output power down when the overload of the generator/engine is judged, 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, when the main control CPU compares that the opening degree value is larger than the opening degree early warning value in a detection period and the proportion exceeds 50%, the overload of the generator/engine is judged. Has the advantages that: in the scheme, the overload of the generator/engine is judged only when the proportion of the opening degree value larger than the opening degree early warning value exceeds 50% in a detection period, and the accuracy of the judgment result can be improved.
Further, the master CPU reduces the current allowable output power P1 — P0-200.
Further, the storage module is also prestored with a minimum opening value of the generator/engine throttle valve, and when the detected opening value is smaller than the preset minimum opening value, the main control CPU reports the fault reminding information. Has the advantages 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 also reported to remind a user of timely overhauling.
Further, the environmental sensor is an air pressure sensor.
The invention also aims to provide an engine which comprises an electronic injection system, wherein the electronic injection system is integrated with the control system.
The invention also provides a generator, which comprises the engine, wherein the main control CPU supplies power through an external storage battery or a winding.
Drawings
FIG. 1 is a flow chart of a control method, control system, engine and generator embodiment of the present invention;
FIG. 2 is a block diagram of the modules of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
the embodiment is basically as shown in the attached figure 1: a control method comprising the steps of:
s1, detecting an environment value of the environment where the generator/engine is located, identifying the currently allowed maximum power P0 from a preset power meter according to the environment value, and actively reporting; the environment value comprises an altitude and an air pressure value, and the altitude and the air pressure value are corresponding to each other, so that in the embodiment, when the environment value is detected, the air pressure sensor is adopted to acquire the air pressure value of the environment where the environment is located; one of the preset power tables is shown in the following table, because the maximum allowable power P0 of the generators/engines of different models is different.
S2, controlling the output power P of the generator/engine to be less than or equal to P0 according to the reported currently allowed maximum power P0;
s3, detecting the opening value of the throttle valve of the engine; comparing the detected opening degree value with a pre-stored opening degree early warning value of a generator/engine overloaded throttle valve, judging that the generator/engine is not overloaded currently when the opening degree value is less than or equal to the opening degree early warning value, and continuously detecting the opening degree value of the engine throttle valve; in a detection period, when the proportion that the opening degree value is larger than the opening degree early warning value exceeds 50% by comparison, the generator/engine is judged to be overloaded, the reported power P1 is updated, and the reported power P1 is P0-200; in this embodiment, one detection period is set to 20 s;
s4, repeating the steps S2 and S3 until the opening degree value is smaller than the opening degree early warning value or the detected opening degree value is smaller than a preset minimum opening degree 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 embodiment further discloses a control system, which includes an environment sensor for detecting an environment value of an environment where the control system is located; in this embodiment, the environmental sensor is an air pressure sensor.
A throttle position sensor for detecting an opening value of a throttle opening;
the storage module is used for prestoring a power meter which is calibrated in different environments and allows the maximum power and an opening degree early warning value of a throttle valve overloaded by a generator/engine, and prestoring a minimum opening degree value of the throttle valve;
the main control CPU is used for calling the allowed maximum output power P0 corresponding to the detected environment value from a prestored 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 is actively adjusted to be P0-200; 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 further transmits the maximum power currently allowed to be output by the engine to an external receiving device through RS485 or bank communication, and reports the currently allowed output power of the generator to a user through the external receiving device for reminding the user to actively reduce the output power; or the receiving device can be a display instrument or a user load housekeeping board, so that the load collapse of the generator/engine in use is actively avoided, and the continuous normal work of the terminal is ensured.
The embodiment also discloses a generator which comprises the engine, wherein the main control CPU supplies power through an external storage battery or a winding.
The specific implementation process is as follows:
s1, the generator/engine is electrified and started, the altitude and the air pressure of the current environment are detected, the current allowed maximum power P0 is identified from the power meter and actively reported;
s2, controlling the output power to be less than or equal to P0 by the user load housekeeping board according to the received allowable power information;
s3, monitoring the opening degree of a throttle valve, when the opening degree of the throttle valve is smaller than a preset value, defaulting that the generator/engine is not overloaded, and reporting an allowable output power value which is still P0; when the opening of a throttle valve is larger than a preset value, the default is that the generator/engine is overloaded, the reported allowable value is reduced by 200W on the basis of the last time, and the reported power is P1-P0-200; wherein the overload judgment logic is: in a 20S time period, the throttle opening is larger than the preset value by more than 50 percent, and the condition is judged to be overload;
s4, controlling the charging power to be less than or equal to P1 by the user load housekeeping board according to the received allowable power information;
s5, continuously monitoring the opening of the throttle valve, when the opening of the throttle valve is smaller than a preset value, defaulting that the generator/engine is not overloaded, and reporting that the allowable output power value is unchanged and is still P1; when the opening of a throttle valve is larger than a preset value, the default is that the generator/engine is overloaded, the reported allowable value is reduced by 200W on the basis of the last time, and the reported power is P2-P1-200;
s6, controlling the output power to be less than or equal to P2 by the user load housekeeping board according to the received allowable power information;
s7, continuously monitoring the opening of the throttle valve, when the opening of the throttle valve is smaller than a preset value, defaulting that the generator/engine is not overloaded, and reporting that the allowable output power value is unchanged and is still P3; when the opening of a throttle valve is larger than a preset value, the default is that the generator/engine is overloaded, the reported allowable value is reduced by 200W on the basis of the last time, and the reported power is P3-P2-200;
s8, controlling the charging power to be less than or equal to P3 by the user load housekeeping board according to the received allowable power information; and reporting fault reminding information of insufficient power of the generator/engine at the moment because the throttle opening value corresponding to the current power is smaller than the minimum opening value, and allowing the user to continue using.
And S9, restarting after the generator/engine is shut down, resetting the main control CPU system, and executing the circulation again.
The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details of the invention in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice with the teachings of the invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (11)
1. A control method characterized by: the method comprises the following steps:
s1, detecting an environment value of the environment where the generator/engine is located, identifying the currently allowed maximum power P0 from a preset power meter according to the environment value, and actively reporting;
s2, controlling the output power P of the generator/engine to be less than or equal to P0 according to the reported currently allowed maximum power P0;
s3, detecting the opening value of the throttle valve of the engine; comparing the detected opening degree value with a pre-stored opening degree early warning value of a generator/engine overloaded throttle valve, judging that the generator/engine is not overloaded currently when the opening degree value is less than or equal to the opening degree early warning value, and continuously detecting the opening degree value of the engine throttle valve; when the opening degree value is larger than the opening degree early warning value, judging that the generator/engine is overloaded, and updating the reported power P1, wherein P1= P0-200;
and S4, repeating the steps S2 and S3 until the opening degree value is smaller than the opening degree early warning value or the detected opening degree value is smaller than the preset minimum opening degree 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: in S4, when the detected opening degree value is smaller than the preset minimum opening degree value, the fault notification information is also reported.
3. The control method according to claim 2, characterized in that: in S1, the detected environmental value includes the current air pressure.
4. The control method according to claim 3, characterized in that: in S3, in a detection period, when the ratio of the opening degree value greater than the opening degree warning value exceeds 50%, it is determined that the generator/engine is overloaded.
5. A control system, characterized by: the environment sensor is used 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 prestored with a power meter which allows the maximum power and is calibrated in different environments and an opening early warning value of a throttle valve overloaded by a generator/engine;
the main control CPU is used for calling the allowed maximum output power P0 corresponding to the detected environment value from a prestored 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 adjusting the current allowable output power when the generator/engine is judged to be overloaded.
6. The control system of claim 5, wherein: and when the main control CPU compares that the opening degree value is larger than the opening degree early warning value in a detection period and the proportion exceeds 50%, judging that the generator/engine is overloaded.
7. The control system according to claim 5 or 6, characterized in that: the master CPU down-regulates the current allowed output power P1= P0-200.
8. The control system of claim 7, wherein: the storage module also prestores a minimum opening value of the 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.
9. The control system of claim 8, wherein: the environment sensor is an air pressure sensor.
10. An engine, comprising an electronic fuel injection system, characterized in that: integrated on said electronic injection system is a control system according to claims 5-9.
11. The generator, its characterized in that: the engine of claim 10, wherein the main control CPU is powered by an external 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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| CN202210617479.8A CN114837839B (en) | 2022-06-01 | 2022-06-01 | Control method, control system, engine and generator |
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| CN114837839B CN114837839B (en) | 2023-05-26 |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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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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