CN112147025A - Automatic control system for engine exhaust cold and hot impact fan - Google Patents
Automatic control system for engine exhaust cold and hot impact fan Download PDFInfo
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- CN112147025A CN112147025A CN202011041451.1A CN202011041451A CN112147025A CN 112147025 A CN112147025 A CN 112147025A CN 202011041451 A CN202011041451 A CN 202011041451A CN 112147025 A CN112147025 A CN 112147025A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0057—Generation of the force using stresses due to heating, e.g. conductive heating, radiative heating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0224—Thermal cycling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses an automatic control system for an exhaust cold and hot impact fan of an engine, which comprises a control module, a control circuit and 3 cooling fans, wherein the control module is connected with the 3 cooling fans through the control circuit, and is connected with an exhaust temperature sensor of the engine. Effectively solve exhaust manifold cold and hot impact endurance test ability, reduce experimental development cost, promote development efficiency, effectively guaranteed laboratory high voltage electricity safety, prevent that the experimenter high voltage electric shock accident from taking place.
Description
Technical Field
The invention relates to the technical field of automobile engines, in particular to an automatic control system for an engine exhaust cold and hot impact fan.
Background
In the development process of an engine, the durability of cold and heat shock of an exhaust manifold of the engine is required to be verified, and the existence of penetrating cracks in an exhaust pipe is verified through the high-temperature and low-temperature cyclic durability shock of the engine; whether the exhaust pipe connecting flange has obvious deformation, fracture and other problems or not; for this test, the laboratory had no test equipment for exhaust manifold cold and heat shock endurance verification; the current situation of the test is combined, and the control principle of the test bench is adopted.
A set of automatic control and test bed system of the cooling fan is required to be manufactured for integration; the cold and hot impact endurance test of the engine exhaust manifold is realized; designing a high-voltage control circuit by utilizing three groups of cooling FANs FAN _ ON _1, FAN _ ON _2 and FAN _ ON _ 3; the device comprises a low-voltage control circuit and a test bench DO output circuit; compiling software control logic, starting and running an engine for preheating, and closing three groups of cooling fans; when the temperature of the exhaust manifold reaches more than 350 ℃, the FAN FAN _ ON _1 is started, and when the temperature of the exhaust manifold reaches more than 370 ℃, the FANs FAN _ ON _1 and FAN _ ON _2 are started simultaneously; when the temperature of the exhaust manifold reaches more than 860 ℃, three groups of cooling FANs FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 are started; at this time, the engine speed/torque/power is maximum; along with the change of the test working condition, the automatic working condition of the rack automatically calls the starting and stopping functions of the three groups of cooling fans; an automatic control system of an engine exhaust cold and hot impact fan is adopted; and realizing the test of the durability of the cold and hot impact of the exhaust manifold of the engine.
Disclosure of Invention
The invention aims to solve the technical problem that aiming at the defects in the prior art, the invention provides the automatic control system for the engine exhaust cold and hot impact fan, which effectively solves the cold and hot impact endurance test capability of the exhaust manifold, reduces the test development cost, improves the development efficiency, effectively ensures the high-voltage electricity utilization safety of a laboratory and prevents testers from high-voltage electric shock accidents.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a be used for cold and hot impact fan automatic control system of engine exhaust, includes control module, control circuit and 3 cooling blower, and 3 cooling blower are first cooling blower, second cooling blower and third cooling blower respectively, and control module passes through control circuit and is connected with 3 cooling blower, and control module is connected with the exhaust temperature sensor of engine.
According to the technical scheme, when the exhaust temperature T of the engine is less than 350 ℃, the first cooling fan is started;
when the exhaust temperature T of the engine is more than 350 ℃ at the temperature of 850 ℃, the first cooling fan and the second cooling fan are simultaneously started;
and when the exhaust temperature T of the engine is more than 850 ℃, the first cooling fan, the second cooling fan and the third cooling fan are simultaneously started.
According to the technical scheme, the control circuit comprises 3 circuit breakers, 3 contactors and 3 intermediate relays, each cooling fan corresponds to one circuit breaker and one contactor, the cooling fans sequentially pass through the corresponding contactors and the corresponding circuit breakers and are connected with the three-phase power supply, and the control module is connected with coils of the three contactors through the 3 intermediate relays.
According to the technical scheme, the control module is respectively connected with 3 fan indicating lamps; 3 fan pilot lamps correspond 3 cooling blower respectively, show opening and closing of 3 cooling blower respectively.
According to the technical scheme, the control module comprises a computer and a controller, the computer is connected with the controller, and the controller is respectively connected with an exhaust temperature sensor of the engine and a coil of the contactor.
The invention has the following beneficial effects:
1. an automatic control system of the cold and hot impact fan by utilizing the exhaust of the engine; a self-made high-voltage control circuit and a low-voltage control circuit; the output is controlled by a test bed computer DO, so that the function of remotely controlling the starting and stopping of the fan by the computer is realized; according to the test plan, editing automatic working conditions in a test bed system, combining three groups of cooling fans with the cold and hot impact working conditions of engine exhaust, and designing a set of fan automatic control system; the cold and hot impact test of 500-hour exhaust of the engine is met, and verification guarantee is provided for test development; time and cost are saved for test development; through self-control fan automatic control system, effectively solve exhaust manifold cold and hot impact endurance test ability, reduce experimental development cost, promote development efficiency, effectively guaranteed laboratory high voltage electricity safety, prevent that the experimenter from high-pressure electric shock accident taking place.
2. An automatic control system of the cold and hot impact fan by utilizing the exhaust of the engine; and taking the fan control logic and the engine exhaust temperature as starting and stopping judgment conditions. The test bed computer calls the exhaust temperature ETB and the fan variable through software programming; the DO output module is set to be 0 or 1, and the DC24V intermediate relay and the DC24 intermediate relay are controlled to control the AC380V high-pressure cooling fan to be turned on or off through contacts; the cooling fan is remotely controlled by a computer of the test bed to supply power under high voltage, so that the high-voltage power utilization safety of a test room is ensured, and the electric shock accidents of testers are prevented; test bench computer remote control logic: when the exhaust temperature is less than 350 ℃, starting a cooling FAN FAN _ ON _ 1; when the exhaust temperature is higher than 350 ℃, the cooling FANs FAN _ ON _1 and FAN _ ON _2 are started simultaneously; when the exhaust temperature is higher than 850 ℃, three groups of cooling FANs FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 are started; exhaust manifold cooling capacity; ON the contrary, when the exhaust temperature changes to be high and low, the FAN _ ON _3, FAN _ ON _2 and FAN _ ON _1 are closed in sequence; the cold and hot impact test capability of the exhaust manifold is realized; repeatedly calling a fan variable through the automatic working condition operation and waiting time of the test bed to realize 500-hour durability verification on the cold and hot impact of the exhaust manifold of the engine; the test development cost is reduced, the development efficiency is improved, the high-voltage electricity safety of a laboratory is effectively guaranteed, and the high-voltage electric shock accidents of testers are prevented.
Drawings
FIG. 1 is a schematic diagram of a control circuit in an embodiment of the invention;
FIG. 2 is a schematic diagram of an automatic control system for an engine exhaust cold and hot impact blower in an embodiment of the present invention;
in the figure, FAN _ ON _ 1-first cooling FAN, FAN _ ON _ 2-second cooling FAN, FAN _ ON _ 3-third cooling FAN, 1-computer, 2-controller, 3-indicator light.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 2, an automatic control system for an engine exhaust cold and hot impact fan in an embodiment of the present invention includes a control module, a control circuit, and 3 cooling fans, where the 3 cooling fans are a first cooling fan, a second cooling fan, and a third cooling fan, respectively, the control module is connected to the 3 cooling fans through the control circuit, and the control module is connected to an exhaust temperature sensor of an engine; the control module monitors the exhaust temperature of the engine through the exhaust temperature sensor, and different cooling fans are started through the control circuit according to different temperature control modules.
Further, when the exhaust temperature T of the engine is less than 350 ℃, the first cooling fan is started;
when the exhaust temperature T of the engine is more than 350 ℃ at the temperature of 850 ℃, the first cooling fan and the second cooling fan are simultaneously started;
and when the exhaust temperature T of the engine is more than 850 ℃, the first cooling fan, the second cooling fan and the third cooling fan are simultaneously started.
Further, the control circuit comprises 3 circuit breakers QF1, QF2, QF3, 3 contactors KM1, KM2, KM3 and 3 intermediate relays, each cooling fan is correspondingly arranged with one circuit breaker and one contactor, the cooling fans are connected with a three-phase power supply sequentially through the corresponding contactors and circuit breakers, and the control module is respectively connected with coils of the three contactors through the 3 intermediate relays.
Further, the control module is respectively connected with 3 fan indicating lamps; 3 fan pilot lamps correspond 3 cooling blower respectively, show opening and closing of 3 cooling blower respectively.
Further, the control module comprises a computer and a controller, the computer is connected with the controller, and the controller is respectively connected with an exhaust temperature sensor of the engine and a coil of the contactor.
Further, the controller is connected with 3 fan pilot lamps.
The working principle of the invention is as follows: the invention provides an automatic control system for an exhaust cold and hot impact fan of an engine; the DO numerical control module of the test bench is connected through a 1394 communication protocol, and specific numerical input and numerical output control variables are set in computer software and named. Designing a circuit according to the power of an exhaust fan; the system comprises a fuse F1, a breaker QF, a contactor KM, an intermediate relay KA, a start indicator lamp, a stop indicator lamp and a computer digital quantity DO output; manufacturing an electric control circuit of the exhaust cooling fan, and realizing the digital control of the DO of the test bench to start and stop the cooling fan; editing an automatic working condition program in the automatic working condition of the test bed; embedding a cooling FAN starting and stopping instruction into a 500-hour exhaust cold and hot impact durable working condition linkage control, adjusting the corresponding exhaust temperature of the engine speed/torque according to the automatic working condition when the automatic working condition starts, and starting a cooling FAN FAN _ ON _1 when the exhaust temperature is less than 350 ℃; when the exhaust temperature is higher than 350 ℃, two groups of cooling FANs FAN _ ON _1 and FAN _ ON _2 are started simultaneously; when the exhaust temperature is higher than 850 ℃, three groups of cooling FANs FAN _ ON _1, FAN _ ON _1 and FAN _ ON _3 work; ON the contrary, according to the automatic working condition exhaust temperature change of the engine speed/torque, sequentially closing FAN _ ON _3, FAN _ ON _2 and FAN _ ON _ 1; the cold and hot impact automatic control system of the engine exhaust system is realized, the cold and hot impact verification test of 500-hour exhaust is ensured by manufacturing the cold and hot impact automatic control system of the engine exhaust system, and the reliability verification capability of the engine is improved.
The invention provides an automatic control system for an exhaust cold and hot impact fan of an engine; a high-voltage control part: the breaker QF1, QF2 and QF3 output U, V, W is connected with contactor KM1, KM2 and KM3 normally open contacts at three ends; FANs FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 are connected with the KM1, KM2 and KM3 through U, V, W three terminals; a low-voltage control part: contactor KM1, KM2, KM2 coil A1 and A2 are connected with DC24V intermediate relay KA1, KA2 and KA3 normally open contacts, and a computer control part: output of the test bed computer DO: x32/1, X33/2 and X33/3 normally open contacts; writing automatic working conditions in test bench software, writing named control variables into the test bench software, inputting a control instruction '0' or '1' into a bench computer system, and realizing FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 control; the cooling fan is controlled to be turned on and off according to test requirements, so that the high-temperature and low-temperature fan control switching of an engine exhaust system is realized, and an automatic control system of the engine exhaust cold and hot impact fan is realized.
The invention provides an automatic control system for an exhaust cold and hot impact fan of an engine; control logic between software and hardware: the method comprises the steps that computer software of a test bench edits three groups of variables FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3, three groups of normally open DO output variables are connected into a low-voltage DC24 intermediate relay to respectively control a KA1 coil A1, a KA2 coil A3 coil A2 and a normally closed contacts when the three groups of coils of KA1 coil KA2 coil KA3 are attracted; three groups of power-on indicator lamps are on; attracting three groups of coils A1 and A2 of KM1, KM2 and KM 3; when the KM1, KM2 and KM3 contacts are normally open and become normally closed, three groups of FANs FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 are turned ON; and the three groups of fan indicating lamps are on. The method realizes that the computer of the test bench inputs a '0' or '1' instruction to control the starting and stopping of the FAN, and edits the automatic control working condition of the exhaust cold and hot impact FAN of the test bench to call FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 variables.
As shown in fig. 1, the automatic control system for the engine exhaust cold and hot impact blower according to the embodiment of the present invention is designed with a high-pressure control unit: three-phase AC380V AC; designing a circuit diagram: a three-phase fuse F, three groups of circuit breakers QF (0-4.5A) set the maximum current according to the load; the problems of overload, over-temperature, short circuit and the like of the fan are protected; three groups of alternating current contactors AC380V/5A, coils A1 and A2 supply AC 220V; when the coil A1 is attracted with the coil A2, the contact of the alternating current contactor is normally closed; the fan M supplies power for AC 380V/2A; when the alternating current contactor outputs alternating current 380V to the three groups of fans M, the fans operate normally;
as shown in fig. 2, the technical solution of the automatic control system for the engine exhaust cold and hot impact blower provided by the embodiment of the present invention is to design a low-pressure control unit: a two-phase AC220 AC supply; designing a circuit diagram: three sets of DC24V intermediate relays KA; a1 and A2 are coils; contact control AC contactor coils (AC220V) a1 and a 2; the output part of the 24V power supply module AC/DC and the direct current DC24V is connected with the DO digital quantity outputs X32, X33 and X34 of the FEM module of the test bench; when the output channels FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 of the test bench computer are set to 1: the method comprises the following steps that (1) a DO digital quantity X32, X33 and X34 of an FEM module outputs a normally closed command, three groups of intermediate relay KA coils A1 and A2 attract each other, intermediate relay KA contacts attract each other, after the intermediate relay KA contacts are normally closed, three groups of alternating current contactor KM coils A1 and A2 attract each other, the three groups of alternating current contactor contacts are normally closed, and a fan M automatically runs; the computer test bed is repeatedly set to be 0 or 1, and the fan is automatically started and stopped; the method is applied as follows: the computer control of the test bed controls an external high-voltage power system, and the power utilization safety of a laboratory is ensured.
The embodiment of the invention provides a software control logic diagram for an automatic control system of an engine exhaust cold and hot impact fan, which comprises the following steps: editing an automatic working condition test program, writing variable names of three groups of FANs FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 and an exhaust temperature ETB into an automatic working condition, programming through a statement table or non-substitution software, and starting a cooling FAN FAN _ ON _1 when the exhaust temperature is less than 350 ℃; when the exhaust temperature is higher than 350 ℃, the cooling FANs FAN _ ON _1 and FAN _ ON _2 are started simultaneously; when the exhaust temperature is higher than 850 ℃, three groups of cooling FANs FAN _ ON _1, FAN _ ON _2 and FAN _ ON _3 are started; finally, the test bed automatically controls the starting and stopping of the fan; the durability test capability of the engine in exhaust cold and hot impact is solved; the safety of high-voltage electricity utilization in a laboratory is ensured, and a test development task and a test node are ensured.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (5)
1. The utility model provides a be used for cold and hot impact fan automatic control system of engine exhaust which characterized in that, includes control module, control circuit and 3 cooling blower, and control module passes through control circuit and is connected with 3 cooling blower, and control module is connected with the exhaust temperature sensor of engine.
2. The automatic control system for the engine exhaust cold-hot impact fan according to claim 1, wherein the 3 cooling fans are a first cooling fan, a second cooling fan and a third cooling fan,
when the exhaust temperature T of the engine is less than 350 ℃, the first cooling fan is started;
when the exhaust temperature T of the engine is more than 350 ℃ at the temperature of 850 ℃, the first cooling fan and the second cooling fan are simultaneously started;
and when the exhaust temperature T of the engine is more than 850 ℃, the first cooling fan, the second cooling fan and the third cooling fan are simultaneously started.
3. The automatic control system for the engine exhaust cold and hot impact fan according to claim 1, wherein the control circuit comprises 3 circuit breakers, 3 contactors and 3 intermediate relays, each cooling fan is arranged corresponding to one circuit breaker and one contactor, the cooling fans are connected with a three-phase power supply sequentially through the corresponding contactors and circuit breakers, and the control module is connected with coils of the three contactors respectively through the 3 intermediate relays.
4. The automatic control system for the engine exhaust cold and hot impact fan according to claim 1, wherein the control module is respectively connected with 3 fan indicating lamps; 3 fan pilot lamps correspond 3 cooling blower respectively, show opening and closing of 3 cooling blower respectively.
5. The automatic control system for the engine exhaust cold and hot impact fan according to claim 3, wherein the control module comprises a computer and a controller, the computer is connected with the controller, and the controller is respectively connected with an exhaust temperature sensor of the engine and a coil of the contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041451.1A CN112147025A (en) | 2020-09-28 | 2020-09-28 | Automatic control system for engine exhaust cold and hot impact fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041451.1A CN112147025A (en) | 2020-09-28 | 2020-09-28 | Automatic control system for engine exhaust cold and hot impact fan |
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| Publication Number | Publication Date |
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| CN112147025A true CN112147025A (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011041451.1A Pending CN112147025A (en) | 2020-09-28 | 2020-09-28 | Automatic control system for engine exhaust cold and hot impact fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT524866B1 (en) * | 2021-04-30 | 2022-10-15 | Avl List Gmbh | TEST BENCH ARRANGEMENT |
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| CN2854667Y (en) * | 2005-12-11 | 2007-01-03 | 吴彤旭 | Control device for cooling fan of transformer |
| CN201032475Y (en) * | 2006-11-29 | 2008-03-05 | 广西玉柴机器股份有限公司 | Engine deepness cold-hot shock test platform |
| US20080236134A1 (en) * | 2007-03-30 | 2008-10-02 | Krueger Ernest M | Exhaust Gas Simulation System With Dual Path Temperature Control For Control Of Exhaust Temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT524866B1 (en) * | 2021-04-30 | 2022-10-15 | Avl List Gmbh | TEST BENCH ARRANGEMENT |
| AT524866A4 (en) * | 2021-04-30 | 2022-10-15 | Avl List Gmbh | TEST BENCH ARRANGEMENT |
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Application publication date: 20201229 |