CN102748144A - Gasoline and CNG (compressed natural gas) dual-fuel control system - Google Patents
Gasoline and CNG (compressed natural gas) dual-fuel control system Download PDFInfo
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- CN102748144A CN102748144A CN2012102535280A CN201210253528A CN102748144A CN 102748144 A CN102748144 A CN 102748144A CN 2012102535280 A CN2012102535280 A CN 2012102535280A CN 201210253528 A CN201210253528 A CN 201210253528A CN 102748144 A CN102748144 A CN 102748144A
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- 239000000446 fuel Substances 0.000 title claims abstract description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract description 6
- 239000003345 natural gas Substances 0.000 title abstract description 3
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 239000007921 spray Substances 0.000 claims description 10
- 238000003079 width control Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 8
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the field of electronic control of power assemblies of automobiles, in particular to a gasoline and CNG (compressed natural gas) dual-fuel control system. The gasoline and CNG dual-fuel control system comprises a controller, and an input end of the controller receives a signal of a gasoline and CNG jetting control sensor; a control output end of the controller outputs an ignition control signal and also outputs a nozzle control signal and a gasoline/CNG switching control signal to a nozzle driving box; and the nozzle driving box receives the control signals of the controller and selectively actuates gasoline jetting or gas jetting actions. By the nozzle driving box, a driving module of a gas nozzle is separated from the controller, the controller can be an existing gasoline controller, any hardware modification is not required, and cost can be greatly reduced. Because the driving module of the gas nozzle is separated from the controller, when the controller needs to be matched with gas nozzles with different gas jetting characteristics, only the nozzle driving box is required to be modified, any modification to the controller is not required, and adaptability to various gas nozzles in the control scheme is greatly improved.
Description
Technical field
The present invention relates to the automobile power assembly field of electric control, particularly gasoline and CNG dual-fuel control system.
Background technique
In order to control the operation of gasoline/CNG (compressed natural gas is called for short CNG) dual-fuel automobile, the mode of generally taking at present is on original petrol engine electronic control system, to install the CNG controller additional.Input signals such as the tach signal of CNG controller through the original petrol engine electronic control system of intercepting, camshaft signal, oxygen sensor signal carry out the switching of gasoline and two kinds of fuel of CNG.Because it is different fully that the driving requirement of blast nozzle and the driving of oil nozzle require, therefore also need on the CNG controller, realize the driver module of blast nozzle.And this method CNG controller is to control through the signal of the former gasoline control system of intercepting; And has no information interaction between the controller of former gasoline electronic control system; Be the control system of a kind of " depending on " formula, the problem of bringing is the control accuracy deficiency, can't realizes that accurate firing angle control and the control of jet amount, the complex structure cost of CNG controller mode high, intercept signal own under the CNG fuel state cause former gasoline electronic control system newspaper fault easily.
The scheme of using a controller to control simultaneously oil nozzle and blast nozzle is also arranged.This controlling method need realize the drive circuit to the two-way nozzle in same controller.Perhaps use a kind of high-power driving that can take into account blast nozzle and oil nozzle characteristic, come to satisfy simultaneously the requirement that blast nozzle and oil nozzle drive.Generally need change existing gasoline controller hardware; And because the drive performance of blast nozzle and oil nozzle difference are bigger; Blast nozzle itself also has polytype, and the driving mode adaptive surface of taking into account two kinds of nozzles is narrower, and is high to the change cost of controller.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, switch gasoline and CNG dual-fuel control system fast and easily.
For realizing above-mentioned purpose, the technological scheme that the present invention adopts is: a kind of gasoline and CNG dual-fuel control system, comprise controller, and it is characterized in that: the input end of controller receives gasoline and CNG sprays the control sensor signal; A control output end output ignition control signal of controller; The control output end of controller also delivery nozzle control signal and gasoline/CNG switch-over control signal to nozzle drives box, and nozzle drives the control signal that box receives controller and also selects oil spout or jet action.Can know that by technique scheme the present invention has designed nozzle and driven box and switch gasoline state and CNG state, and realize under this two states control respectively oil nozzle and blast nozzle; Advantage shows in the following areas:
1, through adopting nozzle to drive the mode of box, separate in the driver module slave controller with blast nozzle, so the controller among this present invention can continue to use existing gasoline controller, need not any hardware and change, can reduce cost greatly;
2, owing to separate in the blast nozzle driving slave controller; When the blast nozzle of the different jet characteristics of coupling; Only need to revise nozzle driving box and get final product, need not controller is made any change, increased the adaptability of this controlling schemes greatly various blast nozzles.
Description of drawings
Fig. 1 is a theory diagram of the present invention;
Fig. 2,3 is respectively the theory diagram under gasoline/CNG working state.
Embodiment
Gasoline and CNG dual-fuel control system are as shown in Figure 1, comprise controller 10, and the input end of controller 10 receives gasoline and CNG sprays the control sensor signal; A control output end output ignition control signal of controller 10; The control output end of controller 10 is delivery nozzle control signal and gasoline/CNG switch-over control signal to nozzle driving box 20 also, and nozzle drives the control signal of box 20 reception controllers 10 and also selects oil spout or jet action.
Two input ends of described controller 10 receive gasoline injection control sensor signal respectively and CNG sprays the control sensor signal.
Described controller 10 comprises gasoline/CNG switch logic module 11; Described controller 10 also comprises gasoline injection pulse-width controlled module 12, CNG injection pulse width control module 13, and gasoline/CNG switch logic module 11 selects to output control signals to gasoline injection pulse-width controlled module 12 or CNG injection pulse width control module 13.
Described controller 10 also comprises gasoline optimal ignition angle control module 14 and CNG optimal ignition angle control module 15.
Described gasoline/CNG switch logic module 11 output gasoline/CNG switching signal to nozzles drive the diverter switch 21 in the box 20, and diverter switch 21 switches to oil nozzle pipeline or blast nozzle pipeline.Gasoline/CNG switch logic module 11 selects control signal to export gasoline injection pulse-width controlled module 12 to, outputs control signals to gasoline optimal ignition angle control module 14 simultaneously, gasoline optimal ignition angle control module 14 output fire signal to spark coils 30.
Gasoline/CNG switch logic module 11 selects control signal to export CNG injection pulse width control module 13 to, outputs control signals to CNG optimal ignition angle control module 15 simultaneously, CNG optimal ignition angle control module 15 output fire signal to spark coils 30.
The terminal of spending extravagantly of described diverter switch 21 links to each other with blast nozzle drive circuit module 22, and blast nozzle drive circuit module 22 output drive signals control air blast sprays CNG gas.
In Fig. 2; Be under the gasoline working state; Utilizing controller 10 original oil nozzle drive circuits is gasoline injection pulse-width controlled module 12, and the signal of controller 10 nozzle output pins output drives box 20 through nozzle and directly drives oil nozzle action realization oil spout as the oil nozzle drive signal;
Among Fig. 3, promptly under the CNG working state, utilize controller 10 original oil nozzle drive circuits, the signal of the nozzle output pin output of controller 10 is the blast nozzle control signal, and nozzle drives box 20 and drives the blast nozzle action according to this control signal, realizes jet.
The switching signal of gasoline and CNG is exported to nozzle by controller 10 according to operating mode and is driven box 20, drives the switching that box 20 realizes switching oil spout circuit and jet circuit by nozzle.
Among Fig. 1, the related sensor input signal that all gasoline injection controls and CNG spray control all inputs to same controller 10.30 pairs of spark plugs of controller 10 direct control ignition coils carry out IGNITION CONTROL; Gasoline/CNG switching signal is exported to nozzle by controller 10 and is driven box 20, and nozzle drives box 20 carries out oil nozzle or blast nozzle according to switching signal driving switching; The nozzle output signal of controller 10 is linked into nozzle and drives box 20, and nozzle drives box 20 and according to current diverter switch state this nozzle exported the input signal of signal as oil sprayer drive signal or blast nozzle driver module.
Fig. 2 is the process of the present invention under the gasoline state, specifies as follows: the heavy black line arrow is represented the control flows direction, and the heavy black line frame table is shown in the signal that reads under this state, the signal of output and the module of calling.Controller 10 obtains gasoline injection control relevant sensor signals, and the gasoline injection pulsewidth module 13 in the selection control is calculated and the delivery nozzle control signal, and the gasoline optimal ignition angle control module 14 in the selection control 10 is calculated and output igniting angle signal; Nozzle drives box 20 according to gasoline/CNG switching signal of receiving, and diverter switch 21 is placed the gasoline state, and the nozzle output signal that is about to controller 10 directly links to each other with oil nozzle, and control oil sprayer injected petrol realizes the burning of gasoline state.
Fig. 3 is the procedure declaration of this programme under the CNG state: the heavy black line arrow is represented the control flows direction, and the heavy black line frame table is shown in the signal that reads under this state, the signal of output and the module of calling.Controller 10 obtains CNG and sprays the control relevant sensor signals, and the CNG injection pulse width module 12 in the selection control 10 is calculated and the delivery nozzle control signal, and the CNG optimal ignition angle control module 15 in the selection control 10 is calculated and output igniting angle signal; Nozzle drives box 20 according to gasoline/CNG switching signal of receiving; Diverter switch 21 is placed the CNG state; The nozzle output signal that is about to controller 10 inputs to blast nozzle drive circuit module 22; Produce drive signal through blast nozzle drive circuit 22, the control air blast sprays CNG gas, realizes the burning of CNG state.
Claims (8)
1. gasoline and CNG dual-fuel control system comprise controller (10), it is characterized in that: the input end of controller (10) receives gasoline and sprays with CNG and control sensor signal; A control output end output ignition control signal of controller (10); The control output end of controller (10) also delivery nozzle control signal and gasoline/CNG switch-over control signal to nozzle drives box (20), and nozzle drives the control signal that box (20) receives controller (10) and also selects oil spout or jet action.
2. gasoline according to claim 1 and CNG dual-fuel control system is characterized in that: two input ends of described controller (10) receive gasoline injection control sensor signal respectively and CNG sprays the control sensor signal.
3. gasoline according to claim 1 and 2 and CNG dual-fuel control system; It is characterized in that: described controller (10) comprises gasoline/CNG switch logic module (11); Described controller (10) also comprises gasoline injection pulse-width controlled module (12), CNG injection pulse width control module (13), and gasoline/CNG switch logic module (11) selects to output control signals to gasoline injection pulse-width controlled module (12) or CNG injection pulse width control module (13).
4. gasoline according to claim 3 and CNG dual-fuel control system is characterized in that: described controller (10) also comprises gasoline optimal ignition angle control module (14) and CNG optimal ignition angle control module (15).
5. gasoline according to claim 3 and CNG dual-fuel control system; It is characterized in that: described gasoline/CNG switch logic module (11) output gasoline/CNG switching signal to nozzle drives the diverter switch (21) in the box (20), and diverter switch (21) switches to oil nozzle pipeline or blast nozzle pipeline.
6. gasoline according to claim 4 and CNG dual-fuel control system; It is characterized in that: gasoline/CNG switch logic module (11) selects control signal to export gasoline injection pulse-width controlled module (12) to; Output control signals to gasoline optimal ignition angle control module (14) simultaneously, gasoline optimal ignition angle control module (14) output fire signal to spark coil (30).
7. gasoline according to claim 4 and CNG dual-fuel control system is characterized in that:
Gasoline/CNG switch logic module (11) selects control signal to export CNG injection pulse width control module (13) to; Output control signals to CNG optimal ignition angle control module (15) simultaneously, CNG optimal ignition angle control module (15) output fire signal to spark coil (30).
8. gasoline according to claim 5 and CNG dual-fuel control system; It is characterized in that: the terminal of spending extravagantly of described diverter switch (21) links to each other with blast nozzle drive circuit module (22), and blast nozzle drive circuit module (22) output drive signal control air blast sprays CNG gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102535280A CN102748144A (en) | 2012-07-18 | 2012-07-18 | Gasoline and CNG (compressed natural gas) dual-fuel control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102535280A CN102748144A (en) | 2012-07-18 | 2012-07-18 | Gasoline and CNG (compressed natural gas) dual-fuel control system |
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| CN102748144A true CN102748144A (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102535280A Pending CN102748144A (en) | 2012-07-18 | 2012-07-18 | Gasoline and CNG (compressed natural gas) dual-fuel control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821652A (en) * | 2013-11-18 | 2014-05-28 | 中国北车集团大连机车车辆有限公司 | Diesel and natural gas dual-fuel engine starting and jetting system and control method |
| CN104165098A (en) * | 2013-05-16 | 2014-11-26 | 爱三工业株式会社 | Vehicle control apparatus and vehicle control method |
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| CN101042097A (en) * | 2007-04-13 | 2007-09-26 | 徐焕恩 | Electric control multi-point sequent injection system for gasoline and gas used in electrometallizing vehicle |
| CN201133289Y (en) * | 2007-06-05 | 2008-10-15 | 山东申普汽车控制技术有限公司 | Natural gas CNG-gasoline dual fuel engine control system |
| CN102146853A (en) * | 2011-03-29 | 2011-08-10 | 重庆长安汽车股份有限公司 | Control system for natural gas/gasoline dual-fuel engine |
| CN102182568A (en) * | 2011-03-29 | 2011-09-14 | 重庆长安汽车股份有限公司 | Injection pulse width control method for natural gas and gasoline dual-fuel engine |
| CN103422997A (en) * | 2012-05-24 | 2013-12-04 | 北汽福田汽车股份有限公司 | Fuel feed system and method and vehicle provided with fuel feed system |
-
2012
- 2012-07-18 CN CN2012102535280A patent/CN102748144A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042097A (en) * | 2007-04-13 | 2007-09-26 | 徐焕恩 | Electric control multi-point sequent injection system for gasoline and gas used in electrometallizing vehicle |
| CN201133289Y (en) * | 2007-06-05 | 2008-10-15 | 山东申普汽车控制技术有限公司 | Natural gas CNG-gasoline dual fuel engine control system |
| CN102146853A (en) * | 2011-03-29 | 2011-08-10 | 重庆长安汽车股份有限公司 | Control system for natural gas/gasoline dual-fuel engine |
| CN102182568A (en) * | 2011-03-29 | 2011-09-14 | 重庆长安汽车股份有限公司 | Injection pulse width control method for natural gas and gasoline dual-fuel engine |
| CN103422997A (en) * | 2012-05-24 | 2013-12-04 | 北汽福田汽车股份有限公司 | Fuel feed system and method and vehicle provided with fuel feed system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165098A (en) * | 2013-05-16 | 2014-11-26 | 爱三工业株式会社 | Vehicle control apparatus and vehicle control method |
| CN103821652A (en) * | 2013-11-18 | 2014-05-28 | 中国北车集团大连机车车辆有限公司 | Diesel and natural gas dual-fuel engine starting and jetting system and control method |
| CN103821652B (en) * | 2013-11-18 | 2016-01-20 | 中国北车集团大连机车车辆有限公司 | Diesel-CNG dual fuel engine starts gas ejecting system and controlling method |
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Application publication date: 20121024 |