CN106930845B - A kind of gas engine detonation scaling method - Google Patents
A kind of gas engine detonation scaling method Download PDFInfo
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- CN106930845B CN106930845B CN201710235321.3A CN201710235321A CN106930845B CN 106930845 B CN106930845 B CN 106930845B CN 201710235321 A CN201710235321 A CN 201710235321A CN 106930845 B CN106930845 B CN 106930845B
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- vehicle
- pinking
- detonation
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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
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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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)
- Testing Of Engines (AREA)
Abstract
The invention discloses a kind of gas engine detonation scaling methods, it is walked greatly including calibration pinking threshold values and vehicle knock control two, engine of the invention whether pinking, in being tested according to pinking, the pinking threshold values obtained and the vehicle detonation signal/vehicle environmental noise value calculated in engine actual motion environment are compared judgement, in the judgment process, increase the participation of engine actual motion environment, the influence that environment judges combustion knock can be reduced well in this way, keep engine flexibility stronger, pinking False Rate reduces.
Description
Technical field
The present invention relates to a kind of combustion knock processing technology field more particularly to a kind of gas engine detonation calibration sides
Method.
Background technique
Requirement with the in short supply and people of the energy to vehicular engine performance is higher and higher, natural gas engine economy
Property and the calibration of dynamic property increasingly tend to the limit, and the environment of engine operation is more and more severe, big along with makings
Not identical, inevitably there is phenomenon of detonation in engine in some circumstances.The generation of combustion knock can be shortened and start
The service life of machine and exacerbated discharge, currently used precautionary measures are detected to cylinder pressure, with Combustion tester
Phenomenon of detonation is analyzed to demarcate detonation sensor, determine the generation of pinking and then takes the mode for moving back the angle of ignition to reduce damage
Evil.It is this in vehicle operation, especially acceleration and deceleration frequently or engine speed shake it is more severe when, detonation sensor
It can be to the erroneous judgement signal of ECU conduction pinking, to influence the normal operation of engine.
Such as Fig. 2 show the flow chart that the prior art carries out knock determination, and the letter of detonation sensor is only leaned in this method
Number output determines pinking, and the calibration of detonation sensor carries out on rack, has Combustion tester to do standard, can demarcate relatively smart
Really, when but engine replacement environment is run, same knock sensor signal, which is not necessarily, really occurs pinking, judges by accident in this way
Probability can improve, the environmental suitability of engine is very poor.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to keep engine adaptive faculty strong, the small combustion of pinking probability of miscarriage of justice
Gas combustion knock scaling method.
In order to solve the above technical problems, the technical scheme is that a kind of gas engine detonation scaling method, including
Following steps:
Step 1: calibration pinking threshold values
The calibration pinking threshold values includes the experiment simulation steps carried out simultaneously and data detection processing step；
The experiment simulation steps include:
A, change experiment condition, simulate pinking；
B, using Combustion tester determine pinking whether, determine result be it is no, then return to previous step；Determine result be it is yes,
Then participate in the Data Detection processing step；
The Data Detection processing step includes:
C, detonation signal is detected using experiment detonation sensor, the experiment detonation sensor exports signal to vehicle mounted electric
Brain ECU carries out signal conversion；
D, the noise signal in test experience environment, and by the vehicle-mounted computer ECU to experimental situation noise signal into
Row Integral Processing；
E, in the vehicle-mounted computer ECU, the experiment pinking after vehicle-mounted computer ECU described in step d conversion is passed
Data value after sensor data value and the experimental situation noise signal Integral Processing does calculating of being divided by, and obtains experiment pinking letter
Number/experimental situation noise value；
It f, is that experiment detonation signal/experimental situation noise value when being is set by Combustion tester judgement result
It is set to pinking threshold values；
Step 2: vehicle knock control
G, in vehicle operation, the signal that the vehicle detonation sensor detects is exported to the vehicle-mounted computer ECU
Interior progress signal conversion, the engine speed that real-time detection is arrived, speed fluctuation rate and admission pressure change rate parameter are described
Vehicle environmental noise signal Integral Processing is carried out in vehicle-mounted computer ECU；
H, in the vehicle-mounted computer ECU, the vehicle pinking after vehicle-mounted computer ECU described in step g conversion is passed
Data value after sensor data value and the vehicle environmental noise signal Integral Processing does calculating of being divided by, and show that vehicle pinking is believed
Number/vehicle environmental noise value；
J, pinking threshold values is compared with vehicle detonation signal/vehicle environmental noise value, when pinking threshold values be less than etc.
When vehicle detonation signal/vehicle environmental noise value, it is determined as pinking and postpones the angle of ignition；When pinking threshold values is quick-fried greater than vehicle
When shaking signal/vehicle environmental noise value, the non-pinking of engine is operated normally.
As improvement to above-mentioned technical proposal, the calibration pinking thresholding step is run on rack, engine speed
Stablize with admission pressure, the fluctuation of engine is modified to 0.
By adopting the above-described technical solution, the beneficial effects of the present invention are: engine whether pinking, tested according to pinking
In, the pinking threshold values that obtains and the vehicle detonation signal/vehicle environmental noise ratio come is calculated in engine actual motion environment
Value is compared judgement, in the judgment process, increases the participation of engine actual motion environment, can reduce well in this way
The influence that environment judges combustion knock keeps engine flexibility stronger, and pinking False Rate reduces.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the flow chart that the embodiment of the present invention carries out knock determination；
Fig. 2 is the flow chart that the prior art carries out knock determination.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize,
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
As shown in Figure 1, a kind of gas engine detonation scaling method, comprising the following steps:
Step 1: calibration pinking threshold values
The calibration pinking threshold values includes the experiment simulation steps carried out simultaneously and data detection processing step；
The experiment simulation steps include:
A, change experiment condition, simulate pinking；
B, using Combustion tester determine pinking whether, determine result be it is no, then return to previous step；Determine result be it is yes,
Then participate in the Data Detection processing step；
The Data Detection processing step includes:
C, detonation signal is detected using experiment detonation sensor, the experiment detonation sensor exports signal to vehicle mounted electric
Brain ECU carries out signal conversion；
D, the noise signal in test experience environment, and by the vehicle-mounted computer ECU to experimental situation noise signal into
Row Integral Processing, the noise signal can be detected by relevant sensor；
E, in the vehicle-mounted computer ECU, the experiment pinking after vehicle-mounted computer ECU described in step d conversion is passed
Data value after sensor data value and the experimental situation noise signal Integral Processing does calculating of being divided by, and obtains experiment pinking letter
Number/experimental situation noise value, the experiment detonation sensor data value and the experimental situation noise signal Integral Processing mistake
Journey is no longer described in detail herein for content known to those of ordinary skill in the art.
It f, is that experiment detonation signal/experimental situation noise value when being is set by Combustion tester judgement result
It is set to pinking threshold values.
In above-mentioned steps, the calibration pinking thresholding step is run on rack, and engine speed and admission pressure are steady
Fixed, the fluctuation of engine is modified to 0.
Step 2: vehicle knock control
G, in vehicle operation, the signal that the vehicle detonation sensor detects is exported to the vehicle-mounted computer ECU
Interior progress signal conversion, the engine speed that real-time detection is arrived, speed fluctuation rate and admission pressure change rate parameter are described
Vehicle environmental noise signal Integral Processing is carried out in vehicle-mounted computer ECU；The engine speed can use speed probe
Detection, the speed fluctuation rate and the admission pressure change rate can carry out signal detection by relevant sensor, and by
The vehicle-mounted computer ECU carries out data processing and is calculated；
H, in the vehicle-mounted computer ECU, the vehicle pinking after vehicle-mounted computer ECU described in step g conversion is passed
Data value after sensor data value and the vehicle environmental noise signal Integral Processing does calculating of being divided by, and show that vehicle pinking is believed
Number/vehicle environmental noise value；
J, pinking threshold values is compared with vehicle detonation signal/vehicle environmental noise value, when pinking threshold values be less than etc.
When vehicle detonation signal/vehicle environmental noise value, it is determined as pinking and postpones the angle of ignition；When pinking threshold values is quick-fried greater than vehicle
When shaking signal/vehicle environmental noise value, the non-pinking of engine is operated normally.
Engine of the invention whether pinking, tested according to pinking, the pinking threshold values and engine actual motion that obtain
Vehicle detonation signal/vehicle environmental the noise value come is calculated in environment and is compared judgement, in the judgment process, is increased
The participation of engine actual motion environment can reduce the influence that environment judges combustion knock well in this way, make to start
Machine is more adaptable, and pinking False Rate reduces.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (2)
1. a kind of gas engine detonation scaling method, which comprises the following steps:
Step 1: calibration pinking threshold values
The calibration pinking threshold values includes the experiment simulation steps carried out simultaneously and data detection processing step；
The experiment simulation steps include:
A, change experiment condition, simulate pinking；
B, using Combustion tester determine pinking whether, determine result be it is no, then return to previous step；Determine result be it is yes, then join
With the Data Detection processing step；
The Data Detection processing step includes:
C, detonation signal is detected using experiment detonation sensor, the experiment detonation sensor exports signal to vehicle-mounted computer
ECU carries out signal conversion；
D, the noise signal in test experience environment, and experimental situation noise signal is accumulated by the vehicle-mounted computer ECU
Divide processing；
E, in the vehicle-mounted computer ECU, by the experiment detonation sensor after vehicle-mounted computer ECU described in step d conversion
Data value after data value and the experimental situation noise signal Integral Processing does calculating of being divided by, and obtains experiment detonation signal/reality
Test ambient noise ratio；
It f, is that experiment detonation signal/experimental situation noise value when being is set as by Combustion tester judgement result
Pinking threshold values；
Step 2: vehicle knock control
G, in vehicle operation, by the signal that the vehicle detonation sensor detects export in the vehicle-mounted computer ECU into
The conversion of row signal, engine speed, speed fluctuation rate and the admission pressure change rate parameter that real-time detection is arrived are described vehicle-mounted
Vehicle environmental noise signal Integral Processing is carried out in computer ECU；
H, in the vehicle-mounted computer ECU, by the vehicle detonation sensor after vehicle-mounted computer ECU described in step g conversion
Data value after data value and the vehicle environmental noise signal Integral Processing does calculating of being divided by, and obtains vehicle detonation signal/vehicle
Ambient noise ratio；
J, pinking threshold values is compared with vehicle detonation signal/vehicle environmental noise value, when pinking threshold values is less than or equal to vehicle
When detonation signal/vehicle environmental noise value, it is determined as pinking and postpones the angle of ignition；When pinking threshold values is believed greater than vehicle pinking
Number/vehicle environmental noise value when, the non-pinking of engine, operate normally.
2. a kind of gas engine detonation scaling method as described in claim 1, which is characterized in that the calibration pinking threshold values
Step is run on rack, and engine speed and admission pressure are stablized, and the fluctuation of engine is modified to 0.
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| CN201710235321.3A CN106930845B (en) | 2017-04-12 | 2017-04-12 | A kind of gas engine detonation scaling method |
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| CN106930845B true CN106930845B (en) | 2019-08-27 |
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| CN109973280A (en) * | 2019-03-19 | 2019-07-05 | 汉腾汽车有限公司 | A kind of combustion knock automatic calibration method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3031511C2 (en) * | 1980-08-21 | 1989-09-14 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
| CN1550653A (en) * | 2003-05-16 | 2004-12-01 | 本田技研工业株式会社 | Knocking control apparatus and method for variable cylinder internal combustion engine |
| CN101151446A (en) * | 2005-01-04 | 2008-03-26 | 丰田自动车株式会社 | Dual injection type internal combustion engine |
| CN105386882A (en) * | 2015-10-26 | 2016-03-09 | 重庆长安汽车股份有限公司 | Preignition control method for supercharge non-direct-injection gasoline engine |
| CN205192687U (en) * | 2015-12-18 | 2016-04-27 | 山东大学 | Gas engine knockings test system |
| CN105899792A (en) * | 2014-01-10 | 2016-08-24 | 三菱重工业株式会社 | Knocking determination device and knocking control device for internal combustion engine |
-
2017
- 2017-04-12 CN CN201710235321.3A patent/CN106930845B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3031511C2 (en) * | 1980-08-21 | 1989-09-14 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
| CN1550653A (en) * | 2003-05-16 | 2004-12-01 | 本田技研工业株式会社 | Knocking control apparatus and method for variable cylinder internal combustion engine |
| CN101151446A (en) * | 2005-01-04 | 2008-03-26 | 丰田自动车株式会社 | Dual injection type internal combustion engine |
| CN105899792A (en) * | 2014-01-10 | 2016-08-24 | 三菱重工业株式会社 | Knocking determination device and knocking control device for internal combustion engine |
| CN105386882A (en) * | 2015-10-26 | 2016-03-09 | 重庆长安汽车股份有限公司 | Preignition control method for supercharge non-direct-injection gasoline engine |
| CN205192687U (en) * | 2015-12-18 | 2016-04-27 | 山东大学 | Gas engine knockings test system |
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