CN206625892U - Natural gas engine antisurge control system - Google Patents
Natural gas engine antisurge control system Download PDFInfo
- Publication number
- CN206625892U CN206625892U CN201720381796.9U CN201720381796U CN206625892U CN 206625892 U CN206625892 U CN 206625892U CN 201720381796 U CN201720381796 U CN 201720381796U CN 206625892 U CN206625892 U CN 206625892U
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- China
- Prior art keywords
- ecu
- engine
- throttle
- natural gas
- electronic throttle
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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
- Y02T10/12—Improving ICE efficiencies
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The utility model discloses a kind of natural gas engine antisurge control system, including pressure sensor after pressure sensor, air throttle before ECU, electronic throttle, E-Gas, air throttle, take gas branch pipe and automatically controlled anti-surge valve etc..This Control system architecture designs advantages of simple, by electronic throttle and automatically controlled anti-surge valve logic control, control is accurate, response is timely, can effectively control engine dash forward load removal when form surge, particularly suitable for the Turbocharged Natural Gas Engine of huge discharge, excellent.
Description
Technical field
The utility model belongs to technical field of engine control, and in particular to a kind of natural gas engine Anti-surge Control system
System.
Background technology
Using the Turbocharged Natural Gas Engine of throttle control, after large load operation, in prominent load removal, air throttle needs
Quickly to turn down to reduce air input of engine by air, reduce engine power output；Because air throttle turns down, pressure is fast after air throttle
Speed reduces, and the high pressure after supercharging is maintained before air throttle, if not in time discharged gas, gases at high pressure meeting reverse impact is calmed the anger
Machine impeller, the booster life-span is influenceed, while this operating mode easily makes engine produce surge.
At present, typically prevent engine from surge occurs by increasing anti-surge valve in the prior art, but due to anti-asthma
The valve opening time that shakes only determines that its response is poor by inlet manifold negative pressure settling time, can not prevent surge from sending out well
It is raw.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of control is accurate, response in time, can effectively control
The natural gas engine antisurge control system of surge.
In order to solve the above technical problems, the technical solution of the utility model is：
Natural gas engine antisurge control system, including ECU, in addition to：
Electronic throttle, it is installed on the inlet manifold of engine above and aperture is regulated and controled by the ECU, for adjusting
The flow of combustion mixture；
E-Gas, transmission pedal tramples the signal of the depth and speed to the ECU, so as to control the electricity
The aperture of sub- air throttle；
Pressure sensor before air throttle, it is installed on the inlet manifold of the electronic throttle in front of the door, for detecting the electricity
Admission pressure before sub- air throttle is simultaneously sent to the ECU；
Pressure sensor after air throttle, it is installed in the inlet manifold of the electronic throttle behind the door, for detecting the electricity
Admission pressure after sub- air throttle is simultaneously sent to the ECU；
Gas branch pipe is taken, inlet manifold of the one end with the electronic throttle in front of the door is connected, and the other end is provided with automatically controlled anti-asthma
Shake valve, and the automatically controlled anti-surge valve also regulates and controls aperture by the ECU.
As preferable technical scheme, the exhaust end of the automatically controlled anti-surge valve is provided with muffler.
By adopting the above-described technical solution, the utility model has the advantages that：System structure design is simply closed
Reason, by judgement, Electronic Throttle Control logic and automatically controlled anti-surge valve control logic before surge, control is accurate, response is timely,
Can effectively control engine dash forward load removal when form surge, particularly suitable for the Turbocharged Natural Gas Engine of huge discharge,
Excellent.
Brief description of the drawings
The following drawings is only intended to, in doing the utility model schematic illustration and explanation, not limit model of the present utility model
Enclose.Wherein：
Fig. 1 is the structural representation of control system in the utility model embodiment；
Fig. 2 is the control principle drawing of control method in the utility model embodiment.
In figure：1- ECUs；2- electronic throttles；3- inlet manifold；4- E-Gas；Pressure sensing before 5- air throttles
Device；Pressure sensor after 6- air throttles；7- inlet manifold；8- takes gas branch pipe；The automatically controlled anti-surge valves of 9-；10- mufflers.
Embodiment
With reference to the accompanying drawings and examples, the utility model is expanded on further.In the following detailed description, only pass through
Bright mode describes some one exemplary embodiments of the present utility model.Undoubtedly, one of ordinary skill in the art can be with
Recognize, can be with a variety of modes to described in the case of without departing from spirit and scope of the present utility model
Embodiment is modified.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting the protection of claim
Scope.
As shown in figure 1, natural gas engine antisurge control system, including ECU 1, such as ECU (vehicle-mounted computer), go back
Including：
Electronic throttle 2, it is installed on the inlet manifold 3 of engine and aperture is regulated and controled by the ECU 1, for adjusting
Save the flow of combustion mixture；
E-Gas 4, transmission pedal tramples the signal of the depth and speed to the ECU 1, described so as to control
The aperture of electronic throttle 2；
Pressure sensor 5 before air throttle, it is installed on the inlet manifold 3 before the electronic throttle 2, it is described for detecting
Admission pressure before electronic throttle 2 is simultaneously sent to the ECU 1；
Pressure sensor 6 after air throttle, it is installed in the inlet manifold 7 after the electronic throttle 2, it is described for detecting
Admission pressure after electronic throttle 2 is simultaneously sent to the ECU 1；
Gas branch pipe 8 is taken, one end is connected with the inlet manifold 3 before the electronic throttle 2, and the other end is provided with automatically controlled anti-
Surge valve 9, the automatically controlled anti-surge valve 9 also regulate and control aperture, the exhaust end of the automatically controlled anti-surge valve 9 by the ECU 1
Muffler 10 is installed.
Wherein, electronic throttle, automatically controlled anti-surge valve etc. can use common structure known in the art to realize, no longer
Repeated.
Fig. 1 and Fig. 2 are refer to, natural gas engine anti-surge control method is described below：
Air after being pressurized in engine operation process is after inlet manifold 3, electronic throttle 2 enter inlet manifold 7
Each cylinder of engine is assigned to, and has admission pressure before and after pressure sensor measurement air throttle.ECU 1 (ECU) controls electronics
The aperture of air throttle 2, so as to carry out air flow control.When stepping on E-Gas 4, when engine needs high-load operation, pressure
Sensors measure pressure value increases, if now coming loose E-Gas suddenly, engine needs bust load, and electronic throttle 2 needs
It is quick to turn down to reduce air input of engine by air, reduce engine power output；Because electronic throttle 2 turns down, pressed after air throttle
Power reduces rapidly, and the high pressure after supercharging is maintained before air throttle.
To prevent that high pressure gas causes adverse current to form surge because air throttle turns down before air throttle, performs following steps：
Admission pressure descending slope after the air throttle that ECU 1 is detected according to pressure sensor after air throttle 6, and electricity
The pedal position descending slope that electronic throttle 4 transmits, two signals meet simultaneously when, judge that driver is intended to load removal, now swash
Movable joint valve control function, electronic throttle 2 is opened into certain aperture, while fuel shutoff supplies, by engine by part
High pressure gas is discharged, and is shaken to prevent Zhichuan；
And the air throttle that ECU 1 measures according to pressure sensor 6 after pressure sensor before air throttle 5 and air throttle
Front and rear pressure difference reaches setting value, and meets engine speed limit value, supercharging pressure ratio limit value, engine load limit value simultaneously and ride
During Board position descending slope limit value, anti-surge valve control function is activated, automatically controlled anti-surge valve 9 is opened immediately, by taking gas branch pipe
8th, muffler 10 discharges high pressure gas, the admission pressure before air throttle is reduced, to control surge.
Wherein, pressure differential resetting value, engine speed limit value, supercharging pressure ratio limit value, engine load limit value before and after air throttle
And pedal position descending slope limit value can be demarcated according to actual vehicle and engine operating condition.
The utility model passes through the front/rear pressure sensor of air throttle, Electronic Throttle Control and automatically controlled anti-surge valve control
System, control is accurate, response is timely and positive effect, particularly in the Turbocharged Natural Gas Engine of huge discharge, excellent.
The schematical embodiment of the utility model is the foregoing is only, is not limited to model of the present utility model
Enclose.Any those skilled in the art, the made equivalent change on the premise of design of the present utility model and principle is not departed from
Change and change, the scope of the utility model protection all should be belonged to.
Claims (2)
1. natural gas engine antisurge control system, including ECU, it is characterised in that also include：
Electronic throttle, it is installed on the inlet manifold of engine above and aperture is regulated and controled by the ECU, it is flammable for adjusting
The flow of gaseous mixture；
E-Gas, transmission pedal tramples the signal of the depth and speed to the ECU, so as to control the electronics section
The aperture of valve；
Pressure sensor before air throttle, it is installed on the inlet manifold of the electronic throttle in front of the door, for detecting the electronics section
Admission pressure before valve is simultaneously sent to the ECU；
Pressure sensor after air throttle, it is installed in the inlet manifold of the electronic throttle behind the door, for detecting the electronics section
Admission pressure after valve is simultaneously sent to the ECU；
Gas branch pipe is taken, inlet manifold of the one end with the electronic throttle in front of the door is connected, and the other end is provided with automatically controlled anti-surge valve,
The automatically controlled anti-surge valve also regulates and controls aperture by the ECU.
2. natural gas engine antisurge control system as claimed in claim 1, it is characterised in that：The automatically controlled anti-surge valve
Exhaust end muffler is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720381796.9U CN206625892U (en) | 2017-04-12 | 2017-04-12 | Natural gas engine antisurge control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720381796.9U CN206625892U (en) | 2017-04-12 | 2017-04-12 | Natural gas engine antisurge control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206625892U true CN206625892U (en) | 2017-11-10 |
Family
ID=60207303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720381796.9U Active CN206625892U (en) | 2017-04-12 | 2017-04-12 | Natural gas engine antisurge control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206625892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939826A (en) * | 2017-04-12 | 2017-07-11 | 潍柴西港新能源动力有限公司 | Natural gas engine antisurge control system and method |
-
2017
- 2017-04-12 CN CN201720381796.9U patent/CN206625892U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939826A (en) * | 2017-04-12 | 2017-07-11 | 潍柴西港新能源动力有限公司 | Natural gas engine antisurge control system and method |
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