CN108087074A - A kind of self-checking device of simulated engine muffler resistance - Google Patents
A kind of self-checking device of simulated engine muffler resistance Download PDFInfo
- Publication number
- CN108087074A CN108087074A CN201711327078.4A CN201711327078A CN108087074A CN 108087074 A CN108087074 A CN 108087074A CN 201711327078 A CN201711327078 A CN 201711327078A CN 108087074 A CN108087074 A CN 108087074A
- Authority
- CN
- China
- Prior art keywords
- pressure
- controller
- butterfly valve
- smoke
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
Abstract
The invention discloses a kind of self-checking devices of simulated engine muffler resistance, including the butterfly valve being arranged in smoke-exhaust pipeline, the circulating rate of flue gas are controlled by adjusting the aperture of the butterfly valve, for controlling the actuator of the butterfly valve opening size；For controlling the controller that actuator acts；Pressure threshold is provided in controller；For detecting the pressure sensor of pressure information in smoke-exhaust pipeline；Pressure sensor is located at the upstream of flue gas；The signal output terminal of pressure sensor is electrically connected with the I/O terminals of controller；Controller compared with the output signal of pressure sensor, and then realizes control to actuator by pressure threshold；When pressure is more than pressure threshold in smoke-exhaust pipeline, then controller driving actuator increases the aperture of butterfly valve；When pressure is less than pressure threshold in smoke-exhaust pipeline, then controller driving actuator reduces the aperture of butterfly valve；When pressure is equal to pressure threshold in smoke-exhaust pipeline, then controller driving actuator keeps the aperture of butterfly valve.
Description
Technical field
The present invention relates to technical field of engines, more particularly to a kind of automatic adjustment of simulated engine muffler resistance
Device.
Background technology
The engine of different type of machines, the matching muffler of vehicle is different, i.e. exhaust resistance is different.Diesel oil
According to real muffler when engine is tested in standard rack, more actually result of the test can be reached, but it is tried
It is more (the matching muffler of buying, prepare frock) to test preparation, time lengthens, and directly results in the operating of rack
It is less efficient.
At present on engine pedestal using it is more be one butterfly valve of installation on smoke exhaust pipe, carry hand in butterfly valve rotation axis
Handle.In constant engine operating mode, the aperture of rotation handle, that is, butterfly valve changes correspondingly so that exhaust airstream is in smoke discharging pipe
Actual internal area changes, and (actual internal area becomes larger, and exhaust resistance reduces；Actual internal area reduces, and exhaust resistance becomes larger).
There are the problem of：The exhaust pipe of laboratory is arranged in rack, i.e., pressure regulator valve is also necessarily placed in rack, actual
Two people's cooperations are needed during operation, i.e., engine is adjusted to declared working condition, a people to controlling opening of valve in rack, a people
The numerical value of exhaust resistance is observed in control room and indicates adjusting trend, until obtaining the Resistance Value position that experiment needs.Entire mistake
Journey is cumbersome, and degree of regulation is low；And during engine calibration operating mode personnel enter rack adjust experiment boundary condition it is abnormally dangerous.
The content of the invention
The technical problem to be solved by the present invention is to：A kind of self-checking device of simulated engine muffler resistance is provided,
The self-checking device of the simulated engine muffler resistance is realized by being detected to air pressure size in smoke-exhaust pipeline
PID control is carried out to the aperture of butterfly valve.
The present invention is adopted the technical scheme that solve technical problem present in known technology：
A kind of self-checking device of simulated engine muffler resistance including the butterfly valve being arranged in smoke-exhaust pipeline, leads to
It overregulates the aperture of the butterfly valve and then controls the circulating rate of flue gas；At least further include：
For controlling the actuator of the butterfly valve opening size；
For controlling the controller of above-mentioned actuator action；Pressure threshold is provided in the controller；
For detecting the pressure sensor of pressure information in smoke-exhaust pipeline；The pressure sensor is located at the upstream of flue gas；
The signal output terminal of the pressure sensor is electrically connected with the I/O terminals of controller；The controller passes through pressure
Force threshold realizes the control to actuator compared with the output signal of pressure sensor；Specially：Work as smoke-exhaust pipeline
When interior pressure is more than pressure threshold, then controller driving actuator increases the aperture of butterfly valve；When pressure is less than pressure in smoke-exhaust pipeline
During force threshold, then controller driving actuator reduces the aperture of butterfly valve；When pressure is equal to pressure threshold in smoke-exhaust pipeline, then control
Device driving actuator processed keeps the aperture of butterfly valve.
Preferably, the present invention additionally uses following additional technical feature：
Further：The actuator is servomotor；The servomotor is connected by speed reducer with butterfly valve.
Further：Further include the touch-screen being electrically connected with the I/O terminals of controller.
The invention has the advantages and positive effects that：
By using above-mentioned technical proposal, the present invention can simulate the exhaust resistance of the motor silencer of different type of machines,
By setting exhaust resistance (back pressure) value (unit kPa) of an experiment demand, i.e. pressure threshold, controller sends signal control
Actuator (servomotor) operating of the device, servomotor is by The gear deceleration and finally drives butterfly valve rotation is certain to open
Degree；Pressure sensor, sensor measurement are installed at the position of the coincidence measurement requirement of butterfly valve upstream exhaust pipeline
The pressure value of butterfly valve upstream exhaust pipe, and the private control system for taking motor is fed back to, when pipeline pressure measured value is more than setting value
When, controller takes motor by PID control private and increases valve opening (actual internal area increase)；When pipeline pressure measured value is small
When setting value, controller control private takes motor and valve opening is reduced (actual internal area reduction), until measured value and setting
Value is in same level, then valve opening no longer changes.The use of the self-checking device can improve original pressure at expulsion and adjust
Process is cumbersome, and degree of regulation is low, and during engine calibration operating mode personnel enter rack adjust experiment boundary condition endanger very much
The situation of danger.
Description of the drawings
Fig. 1 is the structure chart of the preferred embodiment of the present invention；
Fig. 2 is the partial front elevation view of the preferred embodiment of the present invention；
Fig. 3 is the local structural graph of the preferred embodiment of the present invention.
Wherein：1st, pressure sensor；2nd, servomotor；3rd, transmission shaft；4th, butterfly valve；5th, smoke-exhaust pipeline.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing
Detailed description are as follows：
It please refers to Fig.1 to Fig.3, a kind of self-checking device of simulated engine muffler resistance, including：
The butterfly valve 4 being arranged in smoke-exhaust pipeline 5 controls the circulating rate of flue gas by adjusting the aperture of the butterfly valve 4；
For controlling the actuator of the 4 aperture size of butterfly valve；
For controlling the controller of above-mentioned actuator action；Pressure threshold is provided in the controller；
For detecting the pressure sensor 1 of pressure information in smoke-exhaust pipeline；The pressure sensor 1 is located at the upper of flue gas
Trip；
The signal output terminal of the pressure sensor 1 is electrically connected with the I/O terminals of controller；The controller passes through pressure
Force threshold realizes the control to actuator compared with the output signal of pressure sensor；Specially：Work as smoke-exhaust pipeline
When interior pressure is more than pressure threshold, then controller driving actuator increases the aperture of butterfly valve；When pressure is less than pressure in smoke-exhaust pipeline
During force threshold, then controller driving actuator reduces the aperture of butterfly valve；When pressure is equal to pressure threshold in smoke-exhaust pipeline, then control
Device driving actuator processed keeps the aperture of butterfly valve.
Preferably, in above preferred embodiment：The actuator is servomotor 2；The servomotor 2 is by subtracting
Fast machine and transmission shaft 3 are connected with butterfly valve.
For the ease of realizing human-computer dialogue：Further include the touch-screen being electrically connected with the I/O terminals of controller.
This preferred embodiment is by setting a pressure threshold for testing demand, i.e. exhaust resistance (back pressure) value (unit
KPa), controller sends signal the actuator (servomotor) of the device is controlled to operate, and servomotor is by The gear deceleration and most
Driving butterfly valve rotates certain aperture eventually；It is equipped at the position of the coincidence measurement requirement of butterfly valve upstream exhaust pipeline
Pressure sensor, sensor measure the pressure value of butterfly valve upstream exhaust pipe, and feed back to the private control system for taking motor, work as pipeline
When pressure measuring value is more than setting value, controller takes motor by PID control private and valve opening is increased (actual internal area increasing
Add)；When pipeline pressure measured value is less than setting value, controller control private takes motor and valve opening is reduced (actual internal area
Reduce), until measured value is in same level with setting value, then valve opening no longer changes.
The embodiment of the present invention is described in detail above, but the content is only presently preferred embodiments of the present invention,
It should not be construed as limiting the practical range of the present invention.Any changes and modifications in accordance with the scope of the present application,
It should all still belong within the patent covering scope of the present invention.
Claims (3)
1. a kind of self-checking device of simulated engine muffler resistance, including the butterfly valve being arranged in smoke-exhaust pipeline, passes through
It adjusts the aperture of the butterfly valve and then controls the circulating rate of flue gas；It is characterized in that：At least further include：
For controlling the actuator of the butterfly valve opening size；
For controlling the controller of above-mentioned actuator action；Pressure threshold is provided in the controller；
For detecting the pressure sensor of pressure information in smoke-exhaust pipeline；The pressure sensor is located at the upstream of flue gas；
The signal output terminal of the pressure sensor is electrically connected with the I/O terminals of controller；The controller passes through pressure threshold
Value realizes the control to actuator compared with the output signal of pressure sensor；Specially：When smoke-exhaust pipeline internal pressure
When power is more than pressure threshold, then controller driving actuator increases the aperture of butterfly valve；When pressure is less than pressure threshold in smoke-exhaust pipeline
During value, then controller driving actuator reduces the aperture of butterfly valve；When pressure is equal to pressure threshold in smoke-exhaust pipeline, then controller
Actuator is driven to keep the aperture of butterfly valve.
2. the self-checking device of simulated engine muffler resistance according to claim 1, it is characterised in that：The execution
Device is servomotor；The servomotor is connected by speed reducer with butterfly valve.
3. the self-checking device of simulated engine muffler resistance according to claim 1, it is characterised in that：Further include with
The touch-screen of the I/O terminals electrical connection of controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711327078.4A CN108087074A (en) | 2017-12-13 | 2017-12-13 | A kind of self-checking device of simulated engine muffler resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711327078.4A CN108087074A (en) | 2017-12-13 | 2017-12-13 | A kind of self-checking device of simulated engine muffler resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108087074A true CN108087074A (en) | 2018-05-29 |
Family
ID=62175423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711327078.4A Pending CN108087074A (en) | 2017-12-13 | 2017-12-13 | A kind of self-checking device of simulated engine muffler resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108087074A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007717A (en) * | 2019-12-24 | 2020-04-14 | 天津雷沃发动机有限公司 | Non-road state four-engine TVA calibration method |
| CN112523838A (en) * | 2020-12-01 | 2021-03-19 | 潍柴动力股份有限公司 | Vehicle exhaust noise reduction method and device, rear noise elimination device and silencer |
| CN112984603A (en) * | 2021-03-03 | 2021-06-18 | 济宁华源热电有限公司 | Heat supply and matched implementation device |
| CN113217162A (en) * | 2021-05-17 | 2021-08-06 | 联合汽车电子有限公司 | Automatic backpressure control device, control method and engine bench test system |
| CN113685255A (en) * | 2021-08-19 | 2021-11-23 | 合肥江淮汽车制管有限公司 | Automobile pipeline with pressure monitoring function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0913995A (en) * | 1995-06-27 | 1997-01-14 | Fuji Oozx Inc | Exhaust brake device |
| JPH10331664A (en) * | 1997-05-29 | 1998-12-15 | Unisia Jecs Corp | Electric throttle device |
| CN203050896U (en) * | 2012-12-18 | 2013-07-10 | 北汽福田汽车股份有限公司 | Engine exhaust emission back pressure automatic control device |
-
2017
- 2017-12-13 CN CN201711327078.4A patent/CN108087074A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0913995A (en) * | 1995-06-27 | 1997-01-14 | Fuji Oozx Inc | Exhaust brake device |
| JPH10331664A (en) * | 1997-05-29 | 1998-12-15 | Unisia Jecs Corp | Electric throttle device |
| CN203050896U (en) * | 2012-12-18 | 2013-07-10 | 北汽福田汽车股份有限公司 | Engine exhaust emission back pressure automatic control device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007717A (en) * | 2019-12-24 | 2020-04-14 | 天津雷沃发动机有限公司 | Non-road state four-engine TVA calibration method |
| CN112523838A (en) * | 2020-12-01 | 2021-03-19 | 潍柴动力股份有限公司 | Vehicle exhaust noise reduction method and device, rear noise elimination device and silencer |
| CN112984603A (en) * | 2021-03-03 | 2021-06-18 | 济宁华源热电有限公司 | Heat supply and matched implementation device |
| CN113217162A (en) * | 2021-05-17 | 2021-08-06 | 联合汽车电子有限公司 | Automatic backpressure control device, control method and engine bench test system |
| CN113685255A (en) * | 2021-08-19 | 2021-11-23 | 合肥江淮汽车制管有限公司 | Automobile pipeline with pressure monitoring function |
| CN113685255B (en) * | 2021-08-19 | 2023-06-02 | 合肥江淮汽车制管有限公司 | Automobile pipeline with pressure monitoring function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180529 |