CN104251160A - Electronic control system for dual-fuel engine - Google Patents
Electronic control system for dual-fuel engine Download PDFInfo
- Publication number
- CN104251160A CN104251160A CN201410371475.1A CN201410371475A CN104251160A CN 104251160 A CN104251160 A CN 104251160A CN 201410371475 A CN201410371475 A CN 201410371475A CN 104251160 A CN104251160 A CN 104251160A
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- CN
- China
- Prior art keywords
- valve
- engine
- control system
- fuel
- dual
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- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000002283 diesel fuel Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 14
- 239000003345 natural gas Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention relates to engine control technologies, in particular to an electronic control system and a control method for a diesel and natural gas hybrid dual-fuel engine. The electronic control system comprises CNG (compressed natural gas) cylinders, gas cylinder pressure gauges, a regulating valve, a natural gas heater, a high-pressure stop valve, a pressure reducing valve, a linear load valve, a stepper motor valve, an air inlet, a mixer, the engine, a fuel capacity limiting electromagnetic valve, a gas inlet pressure sensor, a gas inlet temperature sensor, an engine rotation speed sensor and an electronic control unit. The electronic control system and the control method have the advantages that the natural gas capacity and the ignition fuel capacity can be flexibly controlled by the electronic control system for the dual-fuel engine, and the dual-fuel engine has good emission indexes and can work by the aid of pure diesel during starting and idling; instructions can be emitted by the control system for the engine when the rotation speed of the engine is higher than a certain set value, so that the engine can be automatically switched to work in a dual-fuel working mode.
Description
Technical field
The present invention relates to engine control technologies, be specifically related to a kind of with diesel oil, rock gas for double fuel electrical control system for engine used in combination.
Background technique
Along with the enhancing of people's environmental consciousness, motor vehicle exhaust emission problem is more and more denounced by people.The diesel engine of traditional maximum discharge is faced with the destiny be eliminated, and the enterprise of the motor of many production diesel engines has to develop low-emission diesel.In addition along with the day of petroleum resources is becoming tight, world's fuel price rises violently again and again, the oil price of China is also one rise and rise again, take rock gas as the scientific development of the clean energy resource diesel engine of the substitute fuel of representative and ripe application, can effectively reduce the user cost of heavily blocking, alleviate the shortage of the energy, solve the problems such as exhaust emission.
In existing double fuel control technique, normally on the basis of diesel engine and diesel-control system, set up rock gas control system, but the value that mostly there is Pilot diesel quantity can not control flexibly, exhaust index is higher, and the requirement that discontented toe ring is protected.
Summary of the invention
For the deficiency that prior art exists, provide a kind of amount of natural gas and Pilot diesel quantity to control flexibly, exhaust index is good, meets the electric control system of dual-fuel engine of environmental requirement.
The present invention is achieved by the following technical solutions: a kind of electric control system of dual-fuel engine, comprises CNG gas cylinder, cylinder pressure gauge, modulating valve, gas heater, high-pressure stop valve, reduction valve, linear load valve, step motor valve, air inlet, mixer, motor, oil mass restriction solenoid valve, air inlet pressure sensor, intake air temperature sensor, engine rotation speed sensor and ECU (Electrical Control Unit), described CNG gas cylinder quantity is multiple, and described cylinder pressure gauge is arranged on the two ends of described CNG gas cylinder, and described CNG gas cylinder is connected described modulating valve successively with between described mixer, high-pressure stop valve, reduction valve, linear load valve, step motor valve, described gas heater is arranged on the pipeline between described modulating valve and high-pressure stop valve, the top of described mixer is provided with described air inlet, and described mixer is connected with described motor, is provided with air inlet pressure sensor between described motor and described ECU (Electrical Control Unit), intake air temperature sensor and engine rotation speed sensor, described ECU (Electrical Control Unit) is also connected with described high-pressure stop valve and described step motor valve, described ECU (Electrical Control Unit) is also provided with described oil mass restriction solenoid valve.
Compared with prior art, the invention has the beneficial effects as follows: adopt the amount of natural gas of above-mentioned electric control system of dual-fuel engine and Pilot diesel quantity to control flexibly, exhaust index is good, work with pure diesel oil when starting, idling, when rotating speed exceedes a certain setting value, the control system of motor sends instruction, makes it be automatically converted to double fuel working method.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
In accompanying drawing: 1.CNG gas cylinder; 2. cylinder pressure gauge; 3. modulating valve; 4. gas heater; 5. high-pressure stop valve; 6. reduction valve; 7. linear load valve; 8. step motor valve; 9. air inlet; 10. mixer; 11. motors; 12. oil mass restriction solenoid valves; 13. air inlet pressure sensors; 14. intake air temperature sensor; 15. engine rotation speed sensors; 16. ECU (Electrical Control Unit).
Embodiment
A kind of electric control system of dual-fuel engine, comprises CNG gas cylinder 1, cylinder pressure gauge 2, modulating valve 3, gas heater 4, high-pressure stop valve 5, reduction valve 6, linear load valve 7, step motor valve 8, air inlet 9, mixer 10, motor 11, oil mass restriction solenoid valve 12, air inlet pressure sensor 13, intake air temperature sensor 14, engine rotation speed sensor 15 and ECU (Electrical Control Unit) 16, described CNG gas cylinder 1 quantity is multiple, and described cylinder pressure gauge 2 is arranged on the two ends of described CNG gas cylinder 1, is connected described modulating valve 3 successively between described CNG gas cylinder 1 with described mixer 10, high-pressure stop valve 5, reduction valve 6, linear load valve 7, step motor valve 8, described gas heater 4 is arranged on the pipeline between described modulating valve 3 and high-pressure stop valve 5, the top of described mixer 10 is provided with described air inlet 9, described mixer 10 is connected with described motor 11, is provided with air inlet pressure sensor 13 between described motor 11 and described ECU (Electrical Control Unit) 16, intake air temperature sensor 14 and engine rotation speed sensor 15, described ECU (Electrical Control Unit) 16 is also connected with described high-pressure stop valve 5 and described step motor valve 8, described ECU (Electrical Control Unit) 16 is also provided with described oil mass restriction solenoid valve 12.
Specific works principle is: after diesel oil ato unit, when rotating speed exceedes setting value, automatical control system sends the fuel injection quantity of instruction restriction diesel oil, described modulating valve 3 is opened, natural gas via in CNG gas cylinder 1 is crossed high-pressure stop valve 5 and is entered reduction valve 6, heat absorption is expanded to atmospheric pressure, the throttling of linear load valve 7 and step motor valve 8 controls to enter mixer 10 and mix with air again, the gas mixed enters cylinder finally by suction tude and participates in burning, the rotating speed of the motor 11 that ECU (Electrical Control Unit) 16 senses according to engine rotation speed sensor 12, by the change control step motor valve 8 of air inlet pressure sensor 13 and intake air temperature sensor 14, Pilot diesel flow rate limting mechanism and other electromagnetic valve works.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (2)
1. an electric control system of dual-fuel engine, is characterized in that: comprise CNG gas cylinder, cylinder pressure gauge, modulating valve, gas heater, high-pressure stop valve, reduction valve, linear load valve, step motor valve, air inlet, mixer, motor, oil mass restriction solenoid valve, air inlet pressure sensor, intake air temperature sensor, engine rotation speed sensor and ECU (Electrical Control Unit), described CNG gas cylinder quantity is multiple, and described cylinder pressure gauge is arranged on the two ends of described CNG gas cylinder, and described CNG gas cylinder is connected described modulating valve successively with between described mixer, high-pressure stop valve, reduction valve, linear load valve, step motor valve, described gas heater is arranged on the pipeline between described modulating valve and high-pressure stop valve, the top of described mixer is provided with described air inlet, and described mixer is connected with described motor, is provided with air inlet pressure sensor between described motor and described ECU (Electrical Control Unit), intake air temperature sensor and engine rotation speed sensor, described ECU (Electrical Control Unit) is also connected with described high-pressure stop valve and described step motor valve, described ECU (Electrical Control Unit) is also provided with described oil mass restriction solenoid valve.
2. the controlling method of electric control system of dual-fuel engine according to claim 1, it is characterized in that: after diesel oil ato unit, when rotating speed exceedes setting value, automatical control system sends the fuel injection quantity of instruction restriction diesel oil, described modulating valve is opened, rock gas in described CNG gas cylinder enters high-pressure stop valve after gas heater heating, then reduction valve is entered, heat absorption is expanded to atmospheric pressure, the throttling of linear load valve and step motor valve controls to enter mixer and mix with air again, the gas mixed enters cylinder finally by suction tude and participates in burning, the rotating speed of the motor that ECU (Electrical Control Unit) senses according to engine rotation speed sensor, by the change control step motor valve of air inlet pressure sensor and intake air temperature sensor, Pilot diesel flow rate limting mechanism and other electromagnetic valve works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371475.1A CN104251160A (en) | 2014-07-30 | 2014-07-30 | Electronic control system for dual-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371475.1A CN104251160A (en) | 2014-07-30 | 2014-07-30 | Electronic control system for dual-fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104251160A true CN104251160A (en) | 2014-12-31 |
Family
ID=52186374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410371475.1A Pending CN104251160A (en) | 2014-07-30 | 2014-07-30 | Electronic control system for dual-fuel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104251160A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098865A (en) * | 2018-09-29 | 2018-12-28 | 哈尔滨工程大学 | A kind of uniform premixed natural gas-Diesel Dual-Fuel Engine method for controlling combustion based on reactivity control |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740542A (en) * | 2005-07-21 | 2006-03-01 | 贵州红华科技开发有限公司 | Electronic fuel oil jetting controller and controlling method for double fuel engine |
| EP1923556A1 (en) * | 2006-11-14 | 2008-05-21 | Delphi Technologies, Inc. | Improvements to engine control system |
| CN101737176A (en) * | 2008-11-21 | 2010-06-16 | 深圳市沃尔奔达新能源股份有限公司 | Natural gas/diesel dual-fuel ECU electronic control injection system |
| CN102787921A (en) * | 2012-07-25 | 2012-11-21 | 周继光 | Mixed combustion engine electric control system and control method thereof |
| CN103321782A (en) * | 2013-07-11 | 2013-09-25 | 烟台杰瑞石油服务集团股份有限公司 | Dual-fuel modified system |
| CN204003120U (en) * | 2014-07-30 | 2014-12-10 | 江苏宁工重机股份有限公司 | Electric control system of dual-fuel engine |
-
2014
- 2014-07-30 CN CN201410371475.1A patent/CN104251160A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740542A (en) * | 2005-07-21 | 2006-03-01 | 贵州红华科技开发有限公司 | Electronic fuel oil jetting controller and controlling method for double fuel engine |
| EP1923556A1 (en) * | 2006-11-14 | 2008-05-21 | Delphi Technologies, Inc. | Improvements to engine control system |
| CN101737176A (en) * | 2008-11-21 | 2010-06-16 | 深圳市沃尔奔达新能源股份有限公司 | Natural gas/diesel dual-fuel ECU electronic control injection system |
| CN102787921A (en) * | 2012-07-25 | 2012-11-21 | 周继光 | Mixed combustion engine electric control system and control method thereof |
| CN103321782A (en) * | 2013-07-11 | 2013-09-25 | 烟台杰瑞石油服务集团股份有限公司 | Dual-fuel modified system |
| CN204003120U (en) * | 2014-07-30 | 2014-12-10 | 江苏宁工重机股份有限公司 | Electric control system of dual-fuel engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098865A (en) * | 2018-09-29 | 2018-12-28 | 哈尔滨工程大学 | A kind of uniform premixed natural gas-Diesel Dual-Fuel Engine method for controlling combustion based on reactivity control |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141231 |