CN109653887B - Control method based on different altitude operations of smoke generator - Google Patents
Control method based on different altitude operations of smoke generator Download PDFInfo
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- CN109653887B CN109653887B CN201811534902.8A CN201811534902A CN109653887B CN 109653887 B CN109653887 B CN 109653887B CN 201811534902 A CN201811534902 A CN 201811534902A CN 109653887 B CN109653887 B CN 109653887B
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention relates to the field of fuel pumps, and discloses a control method based on different altitude operations of a smoke generator, which comprises the following steps: detecting the temperature, namely detecting the temperature of the fuel gas discharged by the engine; detecting the rotating speed, and detecting the rotating speed of the engine; data processing, namely performing digital processing on the detected gas temperature data and the detected engine rotating speed data; and data analysis and automatic control, wherein the data after digital processing is analyzed, and when the data exceeds a set temperature threshold or a set rotating speed threshold, an operation control instruction is sent to a fuel pump valve so that the fuel pump valve is automatically adjusted, and the pumping quantity of the fuel pump to the engine is changed. The invention can solve the problem that the internal part of the engine is highly abraded due to the fact that lubricating oil cannot be normally lubricated when the smoke generator operates in a high-altitude environment.
Description
Technical Field
The invention relates to the technical field of control and adjustment of fuel pumps, in particular to a control method based on different altitude operations of a smoke generator.
Background
The smoke generator is a device used for simulating smoke environment in the fire drill process, is often mounted on an automobile to form a smoke generator automobile in a matching way, and has important application in the military drill process. The exhaust temperature of the smoke generator automobile on plain is usually kept at about 600-800 ℃, and the rotation speed of the engine is also kept at about 2000-3500 rpm. At present, the exercise activities need to be performed in different environments, such as plains and plateaus, so as to train the reaction ability of the members in different environments. However, when the automobile smoke generator is used for practicing from plain to plateau, the automobile smoke generator is influenced by the low-pressure environment on the plateau, lubricating oil cannot be pumped out under normal pressure to lubricate all parts of the engine, if the lubricating oil is still kept under normal pressure at the moment, the oil is normally fed into the engine by the fuel pump, so that the inside of the engine is kept in a high-speed running working state, the friction between a piston and a cylinder body or between other moving parts and a fixed part is increased, the result is directly expressed as the temperature is increased and the rotating speed of the engine is accelerated when gas is discharged, the serious abrasion in the engine is easily caused by the condition, the service life of the engine is influenced, and the long-term use of the engine is not facilitated. Therefore, a method for controlling the operation of the smoke generator in different altitude environments is needed to adjust the working state of the fuel pump of the engine so as to reduce the abrasion of the engine.
Disclosure of Invention
The invention aims to provide a control method based on different-altitude operation of a smoke generator, and aims to solve the problems that when the smoke generator operates in different-altitude environments, lubricating oil cannot be normally lubricated, and the working state of a fuel pump cannot be adjusted, so that the internal height of an engine is abraded.
In order to achieve the purpose, the invention adopts the following technical scheme: the control method based on different altitude operations of the smoke generator comprises the following steps:
detecting the temperature, namely detecting the temperature of the fuel gas discharged by the engine;
detecting the rotating speed, and detecting the rotating speed of the engine;
data processing, namely performing digital processing on the detected gas temperature data and the detected engine rotating speed data;
and data analysis and automatic control, wherein the data after digital processing is analyzed, and when the data exceeds a set temperature threshold or a set rotating speed threshold, an operation control instruction is sent to a fuel pump valve so that the fuel pump valve is automatically adjusted, and the pumping quantity of the fuel pump to the engine is changed.
The principle and the advantages of the scheme are as follows: in practical application, the working state of the fuel pump valve is automatically controlled by adopting an automatic control method, so that the working state of the fuel pump valve is automatically adjusted under different air pressure environments, the abrasion of an engine is reduced, and the long-term use of the engine is facilitated. The exhaust temperature is detected, the temperature of exhaust gas can be timely mastered, the rotating speed of the engine can be effectively monitored by detecting the rotating speed of the engine, collected data are subjected to digital processing, an on-board ECU (electronic control Unit) is used for further analyzing the data and determining whether to send an operation instruction to a fuel pump valve according to the fact that whether the data exceed a set threshold value, so that the fuel pump valve is automatically adjusted, the pump oil quantity of the fuel pump to the engine is changed, the working strength of the engine under a high-pressure environment can be effectively reduced, the abrasion degree of the engine is reduced, and the long-term use of the engine is facilitated.
Preferably, as an improvement, in the step of detecting the temperature, an exhaust temperature detecting unit is used for detecting the exhaust temperature of the engine, and in the step of detecting the rotating speed, a rotating speed detecting unit is used for detecting the rotating speed of the engine; in the data processing step, a data processing unit is adopted to carry out digital processing on the data detected by the exhaust temperature detection unit and the rotating speed detection unit; and in the data analysis and automatic control step, the vehicle-mounted ECU is adopted for analyzing and sending signals. The exhaust temperature detection unit and the rotating speed detection unit transmit the temperature data and the rotating speed data which are respectively detected to the data processing unit, the temperature data and the rotating speed data are transmitted to the vehicle-mounted ECU for analysis after being processed in a digital mode by the data processing unit, and then the adjustment control command is sent out after the analysis and judgment of the vehicle-mounted ECU so that the fuel pump valve can be automatically adjusted.
Preferably, as a modification, the detection cycle of the exhaust gas temperature detection unit is set to 15s, and the temperature analysis threshold in the in-vehicle ECU is set to 800 ℃. The exhaust temperature of an automobile on the plain is generally kept at 600-800 ℃, when the automobile runs to a plateau, the exhaust temperature obviously rises due to the abnormal work of a lubricating system, at the moment, the temperature detection unit detects the exhaust temperature and transmits the detected data to the data processing unit for processing, the data processing unit sends the processed data to the vehicle-mounted ECU for analysis, and sends an adjusting control instruction to the fuel pump valve through the vehicle-mounted ECU, so that the aim of quickly adjusting the fuel pump valve is fulfilled. The detection period of the unit for detecting the exhaust temperature is set to 15s, so that the influence on the performance of each structure in the exhaust temperature detection unit due to continuous work of the exhaust temperature detection unit is avoided, the multi-frequency detection of the exhaust temperature is well guaranteed, the detection effect on the temperature is guaranteed, and the fuel pump can be effectively adjusted in time when the engine works abnormally.
Preferably, as a modification, the detection cycle of the rotation speed detection means is also set to 15s, and the rotation speed analysis threshold in the in-vehicle ECU is set to 3500 rpm. The rotating speed of the automobile on the plain is generally kept at 2000-3500 rpm, after the automobile runs to the plateau, the rotating speed of the engine is obviously increased due to the abnormal work of the lubricating system, and at the moment, the rotating speed detection unit detects the rotating speed of the engine and sequentially transmits the detected data to the data processing unit for processing and analyzing by the vehicle-mounted ECU, so that the aim of quickly adjusting the valve of the fuel pump is fulfilled. Therefore, the rotating speed detection unit does not need to work continuously, so that the energy consumption of the system is reduced, and meanwhile, the timely and effective detection of the rotating speed of the engine is ensured.
Preferably, as an improvement, the fuel pump control system further comprises an auxiliary adjusting step, in the auxiliary adjusting step, a fuel pump valve auxiliary unit is arranged on the fuel pump, and the fuel pump valve auxiliary unit is used for working when a fuel pump valve cannot effectively execute an adjusting control instruction sent by the vehicle-mounted ECU, and adjusting the oil amount discharged from an oil discharge passage connected with the fuel pump valve. When a valve of the fuel pump cannot effectively execute an adjusting control instruction sent by the vehicle-mounted ECU, the fuel pump valve auxiliary unit is started to adjust the fuel discharge amount of the fuel pump so as to be suitable for quick and timely adjustment of the working state of the engine in a plateau environment, thereby reducing the abrasion of the engine and being beneficial to long-term use of the engine.
Preferably, in the auxiliary adjusting step, an electromagnetic valve having the same structure as the fuel pump valve is connected to an oil discharge passage of the fuel pump, and a fuel pressure detecting unit is installed in the oil discharge passage of the fuel pump, and the fuel pressure detecting unit is configured to detect the fuel pressure in the oil discharge passage when the vehicle-mounted ECU sends an adjustment control instruction to the fuel pump valve, and sequentially transmit detected fuel pressure data to the data processing unit and the vehicle-mounted ECU, so that the vehicle-mounted ECU sends the adjustment control instruction to the electromagnetic valve when the fuel pump valve cannot effectively execute the adjustment control instruction. The electromagnetic valve is adopted to assist in adjusting the oil pumping amount of the fuel pump to the engine so as to ensure the effective adjustment of the fuel pump. The fuel pressure detection unit is used for detecting the fuel pressure in the oil discharge passage when the vehicle-mounted ECU sends an adjustment control instruction to the fuel pump valve, and transmitting the detected fuel pressure data to the data processing unit, the data processing unit transmits the fuel pressure data into the vehicle-mounted ECU after digitally processing the fuel pressure data, the vehicle-mounted ECU compares the input fuel pressure data with the standard fuel pressure of the fuming machine automobile under the normal operation condition, when the input fuel pressure data has no obvious change compared with the normal pressure value, the fuel pump valve is abnormal in execution, the oil discharge amount of the fuel pump is not effectively adjusted, and at the moment, the vehicle-mounted ECU sends a control signal to the electromagnetic valve to enable the electromagnetic valve to perform auxiliary adjustment on the oil discharge passage so as to reduce the oil discharge amount of the oil discharge passage, namely reduce the oil pump amount of the fuel pump to the engine.
Drawings
FIG. 1 is a flow chart of an exemplary embodiment of an automatic control method.
FIG. 2 is a logic block diagram of a circuit module used in the automatic control method according to an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
the control method based on different altitude operations of the smoke generator, the execution flow of which is shown in figure 1, comprises the following steps:
detecting the temperature, namely detecting the temperature of the gas discharged by the engine by using an exhaust temperature detection unit, wherein the detection period of the exhaust temperature detection unit is set to be 15 s;
detecting the rotating speed, detecting the rotating speed of the engine by using a rotating speed detecting unit, and setting the detection period of the rotating speed detecting unit to be 15 s;
data processing, namely transmitting data detected by the exhaust temperature sensor and the rotating speed sensor to a data processing unit for digital processing, and transmitting the processed data to the vehicle-mounted ECU;
and auxiliary adjustment, wherein an electromagnetic valve with the same structure as the fuel oil valve is arranged on an oil discharge passage of the fuel pump, a fuel pressure detection unit is arranged in the oil discharge passage of the fuel pump, and the fuel pressure detection unit is used for detecting the fuel pressure in the oil discharge passage when the vehicle-mounted ECU sends out an adjustment control instruction to the fuel pump valve, and transmitting the detected fuel pressure data to the data processing unit and the vehicle-mounted ECU in sequence, so that the vehicle-mounted ECU sends out the adjustment control instruction to the electromagnetic valve when the fuel pump valve can not effectively execute the adjustment control instruction.
And (3) analyzing and automatically controlling the data, namely analyzing the digitally processed data by using a vehicle-mounted ECU, and when the signal exceeds a temperature threshold value of 800 ℃ or a rotating speed threshold value of 3500 rpm set by a program, sending an adjusting control instruction to a valve of the fuel pump by using the vehicle-mounted ECU to automatically adjust the fuel pumping quantity of the fuel pump to the engine.
The following description will specifically explain the control method based on the module of the control system shown in fig. 2 used in actual operation as an example.
The control system comprises a detection unit, a data processing unit and a vehicle-mounted ECU.
And the detection unit comprises an exhaust temperature detection unit and a rotating speed detection unit.
The exhaust temperature detection unit is arranged on the inner wall of an exhaust port of a cylinder cover of the engine during use, is used for detecting the exhaust temperature at the exhaust port of the cylinder cover of the engine and transmits the detected data to the data processing unit; the detection period of the exhaust gas temperature detection unit is 15 s. The exhaust temperature detection unit is carried out by adopting an exhaust temperature sensor, specifically a die-plate infrared temperature sensor with the model number of SA-120 AS.
The rotating speed detection unit is arranged in a cylinder body of the engine during use, is used for detecting the rotating speed of a crankshaft of the engine and transmitting detected data to the data processing unit; the detection cycle of the rotation speed detection unit is also 15 s. The rotating speed detection unit in the invention adopts a rotating speed sensor, specifically adopts a Haibo Hua science and technology brand rotating speed sensor, and the model number of the rotating speed detection unit is as follows: HCNJ-101.
And the data processing unit is used for carrying out digital processing on the temperature data detected and transmitted by the exhaust temperature detection unit and the rotating speed data detected and transmitted by the rotating speed detection unit and inputting the processed data into the vehicle-mounted ECU. The data processing unit in the invention is performed by a digital processor dsPIC30F 6011.
And the vehicle-mounted ECU is used for analyzing the temperature data and the rotating speed data input by the data processing unit, the temperature threshold value set in the analysis program of the vehicle-mounted ECU is 800 ℃, and the rotating speed threshold value is 3500 rpm, and when the temperature data input by the data processing unit is higher than the threshold value of 800 ℃ or the rotating speed data input by the rotating speed detection unit is higher than the threshold value of 3500 rpm, the vehicle-mounted ECU sends an adjustment control instruction to the fuel pump valve to control and adjust the opening degree of the fuel pump valve, so that the pumping quantity of the fuel pump to the engine is changed.
The fuel pump valve auxiliary unit is used for carrying out auxiliary adjustment on the oil quantity discharged from an oil discharge passage of the fuel pump when the fuel pump valve receives an adjustment control instruction sent by the vehicle-mounted ECU but cannot be effectively executed. The fuel pump valve auxiliary unit includes the solenoid valve the same with fuel pump valve structure, and solenoid valve and fuel pump valve all are located the oil extraction route of fuel pump, and install fuel pressure detecting element in the oil extraction route of fuel data processing unit, and fuel pressure detecting element's detection cycle also is 15s, and fuel pressure detecting element in this embodiment adopts pressure sensor to go on, specifically adopts: the AU AS-131 pressure sensor is used for sending a regulating control instruction to a fuel pump valve by an on-board ECU, the fuel pressure in the oil discharge passage is detected, the detected fuel pressure data is transmitted to the data processing unit, the digital processing unit carries out digital processing on the fuel pressure data, the fuel pressure data is transmitted to the vehicle-mounted ECU, the vehicle-mounted ECU compares the input fuel pressure data with the standard fuel pressure of 0.3MPa of the fuming machine under the normal running condition, when the input fuel pressure data is not obviously changed from the normal pressure value of 0.3MPa, the fuel pump valve is abnormal in execution, the oil discharge amount of the fuel pump is not effectively regulated, and at the moment, the vehicle-mounted ECU sends a control signal to the electromagnetic valve to enable the electromagnetic valve to carry out auxiliary regulation on the oil discharge passage so as to reduce the oil discharge amount of the oil discharge passage, namely reduce the oil pumping amount of the fuel pump to the engine.
In specific implementation, when the smoke generator automobile moves on a plain, the engine of the smoke generator automobile normally operates, the exhaust temperature of the engine is kept at 800 ℃ below 600-, the fuel pump valve remains normally open.
When the automobile moves to a plateau, the lubricating oil in the lubricating system of the automobile engine cannot be pumped out forcefully due to the influence of the air pressure of the plateau environment, so that a large amount of heat is generated due to high friction inside the engine, the work load of the engine is increased, the detected temperature data and the detected rotating speed data are transmitted into the data processing unit again by the exhaust temperature detecting unit and the rotating speed detecting unit, the data are transmitted into the vehicle-mounted ECU after being processed by the data processing unit in a digital mode, the vehicle-mounted ECU analyzes the data, judges that the exhaust temperature of the engine exceeds the set temperature threshold value of 800 ℃ or the rotating speed of the engine exceeds the set threshold value of 3500 rpm, sends an adjusting control instruction to the fuel pump valve by the vehicle-mounted ECU at the moment, so that the fuel pump valve is adjusted automatically, and further the fuel pump valve is automatically turned down to change the fuel feeding amount of the engine, to reduce the working strength of the engine. In the process, the fuel pressure sensor also collects fuel pressure data in an oil discharge passage and transmits the collected fuel pressure data to the data processing unit, the data processing unit processes the fuel pressure data and inputs the fuel pressure data into the vehicle-mounted ECU, the vehicle-mounted ECU analyzes the fuel pressure data and judges whether the fuel pressure is reduced or not, so that whether a regulating control instruction sent by the vehicle-mounted ECU is effectively executed by a fuel pump valve or not is judged, when the fuel pressure is not reduced, an abnormity occurs in the process of executing the regulating control instruction by the fuel pump valve, the vehicle-mounted ECU sends the regulating control instruction to the electromagnetic valve, the electromagnetic valve replaces the fuel pump valve to regulate the oil discharge passage of the fuel pump, the oil feeding amount of the fuel pump to an engine is reduced, and the aim of auxiliary regulation is fulfilled.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations 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 (3)
1. The control method based on different altitude operations of the smoke generator is characterized by comprising the following steps:
detecting the temperature, detecting the temperature of the gas discharged by the engine by using an exhaust temperature detection unit, and setting the detection period of the exhaust temperature detection unit to be 15 s;
detecting the rotating speed, detecting the rotating speed of the engine, and detecting the rotating speed of the engine by adopting a rotating speed detection unit;
the data processing is to carry out digital processing on the detected gas temperature data and the detected engine rotating speed data, and the data processing unit is adopted to carry out digital processing on the data detected by the exhaust temperature detecting unit and the rotating speed detecting unit;
the data analysis and automatic control is used for analyzing the data after the digital processing, when the data exceeds a set temperature threshold or a set rotating speed threshold, an operation control instruction is sent to a fuel pump valve to enable the fuel pump valve to be automatically adjusted, the fuel pumping quantity of the fuel pump to an engine is changed, and a vehicle-mounted ECU is used for analyzing and sending signals;
the auxiliary adjustment is realized by arranging a fuel pump valve auxiliary unit on the fuel pump, wherein the fuel pump valve auxiliary unit is used for working when a fuel pump valve cannot effectively execute an adjustment control instruction sent by a vehicle-mounted ECU (electronic control unit), and adjusting the oil quantity discharged by an oil discharge passage connected with the fuel pump valve;
in the auxiliary adjusting step, an electromagnetic valve with the same structure as a fuel pump valve is connected to an oil discharge passage of the fuel pump, a fuel pressure detecting unit is installed in the oil discharge passage of the fuel pump and used for detecting fuel pressure in the oil discharge passage when the vehicle-mounted ECU sends an adjusting control instruction to the fuel pump valve, and transmitting detected fuel pressure data to the data processing unit and the vehicle-mounted ECU in sequence, so that the vehicle-mounted ECU sends the adjusting control instruction to the electromagnetic valve when the fuel pump valve cannot effectively execute the adjusting control instruction.
2. The control method based on different altitude operations of the smoke generator as claimed in claim 1, wherein the temperature analysis threshold in the vehicle-mounted ECU is set to 800 ℃.
3. The control method based on different altitude operations of the smoke generator as claimed in claim 1, wherein the detection period of the rotation speed detection unit is also set to 15s, and the rotation speed analysis threshold in the vehicle-mounted ECU is set to 3500 rpm.
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| CN201811534902.8A CN109653887B (en) | 2018-12-14 | 2018-12-14 | Control method based on different altitude operations of smoke generator |
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| CN201811534902.8A CN109653887B (en) | 2018-12-14 | 2018-12-14 | Control method based on different altitude operations of smoke generator |
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| CN109653887B true CN109653887B (en) | 2021-11-02 |
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| CN111999219B (en) * | 2020-07-13 | 2021-09-14 | 山东大学 | Smoke intensity detection method and system for engineering machinery |
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| JP3523210B2 (en) * | 2001-03-12 | 2004-04-26 | 日野自動車株式会社 | Speed limiter |
| CN101363382A (en) * | 2008-10-09 | 2009-02-11 | 张和君 | ECU for electric-controlled petrol engine work system |
| GB2500206A (en) * | 2012-03-12 | 2013-09-18 | Gm Global Tech Operations Inc | Common rail fuel injection system |
| CN205001076U (en) * | 2015-07-28 | 2016-01-27 | 古清灵 | Fluid pressure type fuel block device and adoption device's internal -combustion engine |
| CN108730056A (en) * | 2018-05-25 | 2018-11-02 | 上海汽车集团股份有限公司 | Using the whirlpool front exhaust temperature closed-loop control device and method of temperature sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10526994B2 (en) * | 2017-01-30 | 2020-01-07 | Transportation Ip Holdings, Llc | Methods and system for diagnosing a high-pressure fuel pump in a fuel system |
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2018
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|---|---|---|---|---|
| JP3523210B2 (en) * | 2001-03-12 | 2004-04-26 | 日野自動車株式会社 | Speed limiter |
| CN101363382A (en) * | 2008-10-09 | 2009-02-11 | 张和君 | ECU for electric-controlled petrol engine work system |
| GB2500206A (en) * | 2012-03-12 | 2013-09-18 | Gm Global Tech Operations Inc | Common rail fuel injection system |
| CN205001076U (en) * | 2015-07-28 | 2016-01-27 | 古清灵 | Fluid pressure type fuel block device and adoption device's internal -combustion engine |
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