CN105822484A - Microwave excitation ignition control device for HCCI engine and control method - Google Patents
Microwave excitation ignition control device for HCCI engine and control method Download PDFInfo
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- CN105822484A CN105822484A CN201610245110.3A CN201610245110A CN105822484A CN 105822484 A CN105822484 A CN 105822484A CN 201610245110 A CN201610245110 A CN 201610245110A CN 105822484 A CN105822484 A CN 105822484A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
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- Optics & Photonics (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention discloses a microwave excitation ignition control device for a HCCI engine and a control method and belongs to the technical field of internal combustion engines. The control device comprises a repetitive pulse power source, a microwave source, a microwave distributor, a waveguide assembly and a microwave plug. The repetitive pulse power source is connected with an engine control unit and the microwave source. The microwave source is sequentially connected with the microwave distributor, the waveguide assembly and the microwave plug. The microwave plug is arranged on a cylinder cover. The ignition control method includes the steps that at the beginning of the gas inflow stage, an oil sprayer sprays fuel oil into a combustion chamber to form homogeneous mixtures; the engine control unit sends out a command so that the repetitive pulse power source can send out pulse electric energy, and the electric energy is converted into a microwave pulse through the microwave source; the microwave distributor transmits the microwave pulse to the microwave plug through the waveguide assembly; and the microwave pulse is directly transmitted into the combustion chamber, needing ignition, of an air cylinder through the microwave plug, and ignition is excited. The microwave excitation ignition control device and the control method have the beneficial benefits that the problem that it is difficult to control HCCI engine ignition is solved effectively, the mixture combustion speed is increased, and the thermal efficiency of the engine is improved.
Description
Technical field
The present invention relates to technical field of internal combustion engines, particularly relate to a kind of microwave-excitation hcci engine ignition control device and control method.
Background technology
Currently, along with increasing rapidly of automobile quantity, the resource and environment problem brought is the most increasingly severe.
In orthodox car, the thermal efficiency of gasoline engine only has 30%, and the efficiency under middle Smaller load is lower, and has higher hydrocarbon and CO discharge.Although the diesel engine thermal efficiency is high, but fuel oil sprays into cylinder, causes mixing in cylinder uneven, causes higher NOX and granular material discharged.So since last century end, new combustion mode HCCI (HomogeneousChargeCompressionIgnition, homogeneous-charge compression-ignition) electromotor has obtained widely studied.
Hcci engine fuel oil uniformly mixes with air, and discharge preferably, and uses compression ignition mode, and compression ratio is higher, is favorably improved the thermal efficiency, and meanwhile, hcci engine burning rapidly, adds the degree of constant volume of burning.Although hcci engine has huge energy-saving and emission-reduction potentiality, but there is also problems: hcci engine the most directly controls the mode in burning moment, once air inlet reaches the ignition temperature of fuel, fuel just starts burning, and timing of combustion will depend on air inlet initial temperature and pressure, the compression ratio of electromotor, piston speed and the heat transfer of combustor.So, combustion phase is difficult to control to, and is that current HCCI exists greatest problem.
The IGNITION CONTROL mode of hcci engine at present, mainly has and uses direct inlet air heating, high compression ratio, use to be more easy to the fuel of involuntary ignition, outside residual gas circulation (EGR) or internal EGR.These technology changing combustion boundary can realize the igniting of hcci engine within the specific limits, but, the change of external environment and operating mode makes combustion phase be difficult to control to, the HCCI control strategy demarcated under each environment and each operating mode will be the work wasted time and energy very much, which has limited the application of hcci engine.
Summary of the invention
The present invention is directed to the problem that current hcci engine IGNITION CONTROL is complicated and reliability is low, provide a kind of microwave-excitation hcci engine ignition control device and control method, the mode using the igniting of microwave radiation space controls hcci engine igniting, thus the gaseous mixture of the hcci engine that ignites, it is greatly simplified the Combustion System of hcci engine.
A kind of microwave-excitation hcci engine ignition control device, by microwave is incorporated into combustor, excites the gaseous mixture in ignition combustion chamber, it is achieved deflagrate；Specifically include: repeat pulse power, microwave source, microwave distributor, waveguide assembly and microwave plug.
Repeat pulse power is simultaneously connected with control unit of engine and microwave source, and microwave source connects microwave distributor, and microwave distributor connects waveguide assembly, and waveguide assembly connects microwave plug, and microwave plug is arranged on cylinder cap.
Control unit of engine issues instructions to repeat pulse power, pulse electric energy needed for repeat pulse power output microwave source, and drive microwave source to produce microwave pulse, after microwave distributor receives the instruction of control unit of engine, microwave pulse is transferred to microwave plug through waveguide assembly, is transferred to like clockwork in the cylinder needing to light a fire.
A kind of microwave-excitation hcci engine ignition control method, specifically comprises the following steps that
Step one, by microwave distributor and waveguide assembly, microwave source being connected microwave plug, microwave plug is arranged in cylinder head；
Step 2, at the suction stroke initial stage, fuel injector sprays into quantitative fuel oil to combustor, fuel oil evaporate in combustor formation homogeneous charge；
Step 3, control unit of engine issue instructions to repeat pulse power, and repeat pulse power sends pulse electric energy；
Step 4, pulse electric energy are converted into microwave pulse by microwave source；
Step 5, microwave distributor accept the instruction that control unit of engine sends, and by waveguide assembly, microwave pulse is passed to microwave plug；
Step 6, microwave pulse be transmitted directly to need to light a fire by microwave plug cylinder combustor in, excite igniting.
Gas energy in cylinder becomes big, and temperature raises, and bioactive molecule increases, and the incoming respective cylinder of microwave pulse punctures gaseous mixture and excites igniting.
The invention have the advantage that
1), a kind of microwave-excitation hcci engine ignition control device, the problem effectively solving hcci engine IGNITION CONTROL difficulty.
2), a kind of microwave-excitation hcci engine ignition control method, the mode that this HCCI controls igniting is little to engine modification, easily realizes, low cost.
3), a kind of microwave-excitation hcci engine ignition control method, this sparking mode can be accelerated the burning velocity of gaseous mixture, be conducive to improving the thermal efficiency of electromotor.
Accompanying drawing explanation
Fig. 1 is microwave-excitation hcci engine ignition control device connection diagram of the present invention；
Fig. 2 is microwave-excitation hcci engine ignition control device schematic diagram of the present invention；
Fig. 3 is microwave-excitation hcci engine ignition control method flow chart of the present invention.
1-piston, 2-cylinder, 3-cylinder cap, 4-inlet valve, 5-exhaust valve, 6-air intake duct, 7-exhaust duct, 8-microwave plug, 9-fuel injector；
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is described in further detail.
Following example explanation present invention, but it is not limited to the scope of the present invention.
One microwave-excitation hcci engine ignition control device of the present invention, is mainly used in the IGNITION CONTROL of HCCI gasoline engine, arranges a set of microwave ignition system on homogeneous compression ignition petrol engine, as shown in Figure 1: include repeat pulse power, microwave source, microwave distributor, waveguide assembly and microwave plug.
Repeat pulse power is simultaneously connected with control unit of engine and microwave source, and microwave source connects microwave distributor, and microwave distributor connects waveguide assembly, and waveguide assembly connects microwave plug, and microwave plug is arranged on cylinder cap.
Repeat pulse power utilizes the existing high pressure of electromotor to produce circuit and converts, and exports the pulse electric energy needed for microwave source according to the instruction of control unit of engine suitable time, and pulse electric energy is converted into microwave pulse by microwave source.
Microwave distributor accepts the instruction that control unit of engine sends, in the suitable time, microwave is passed to microwave plug by waveguide assembly, by microwave plug, microwave pulse is transferred in certain combustor needing igniting cylinder like clockwork, excite the gaseous mixture in ignition combustion chamber: when certain cylinder needs igniting, the microwave channel of this cylinder is opened by microwave distributor, and microwave pulse is all transferred to this cylinder.
The present invention is as a example by applying the spatial microwave ignition system on vehicle, it is provided that microwave trigger the combustion system of engine of HCCI combustion as in figure 2 it is shown, combustor be by piston 1, cylinder 2, cylinder cap 3, inlet valve 4, the cavity that exhaust valve 5 forms.Gas enters combustor from air intake duct 6, and the waste gas after burning discharges combustor from exhaust duct 7.Microwave plug 8 is arranged on cylinder cap 3, and meanwhile, fuel injector 9 is also disposed on cylinder cap, is partial to inlet valve side.Meanwhile, controlled in order to realize the burning velocity of hcci engine, reduce maximum combustion speed by introducing external exhaust gas circulation.
The process that microwave triggers HCCI combustion is as follows: at the suction stroke initial stage, fuel injector 9 sprays into a certain amount of fuel oil, and fuel oil evaporates formation homogeneous charge in combustor；When engine crankshaft sensor detects engine phase position, when piston 1 is compressed to top dead centre, control unit of engine controls repeat pulse power and excites generation high power pulse electric energy, it is converted into microwave pulse, microwave distributor controls in the combustor of the cylinder 2 by microwave pulse introducing needs igniting, realize multiple spot in space rapidly to light a fire, gaseous mixture deflagrate simultaneously.
A kind of microwave-excitation hcci engine ignition control method, as it is shown on figure 3, specifically comprise the following steps that
Step one, by microwave distributor and waveguide assembly, microwave source being connected microwave plug, microwave plug is arranged in cylinder head；
Step 2, at the suction stroke initial stage, fuel injector sprays into quantitative fuel oil to combustor, fuel oil evaporate in combustor formation homogeneous charge；
Step 3, control unit of engine issue instructions to repeat pulse power, and repeat pulse power sends pulse electric energy；
Repeat pulse power is according to the instruction of control unit of engine, and when engine crankshaft sensor detects engine phase position, when piston is compressed to top dead centre, repeat pulse power excites the pulse electric energy needed for generation high power pulse, output microwave source；
Step 4, pulse electric energy are converted into microwave pulse by microwave source；
Step 5, microwave distributor accept the instruction that control unit of engine sends, and by waveguide assembly, microwave pulse is passed to microwave plug；
Step 6, microwave pulse be transmitted directly to need to light a fire by microwave plug cylinder combustor in, excite igniting；
When the gas in cylinder obtains large energy, and temperature raises, and bioactive molecule increases, and the incoming respective cylinder of microwave energy punctures gaseous mixture and excites igniting.
The microwave of the present invention controls the method for HCCI combustion, at compression travel end, introduce High-Power Microwave pulse to combustor, heat and excite gaseous mixture in combustor, short time allows the gas of whole combustor close to or up autoignition conditions, realize the deflagrate of gaseous mixture, need not the hcci engine of routine complicated and also insecure combustion control mode, achieve HCCI petrol engine combustion phase place to control reliably, overcome the problem that current homogeneous compression ignition petrol engine IGNITION CONTROL is difficult, effectively solve the technical bottleneck of HCCI gasoline engine.
Claims (4)
1. a microwave-excitation hcci engine ignition control device, it is characterised in that including: repeat pulse power, microwave source, microwave distributor, waveguide assembly and microwave plug；
Repeat pulse power is simultaneously connected with control unit of engine and microwave source, and microwave source connects microwave distributor, and microwave distributor connects waveguide assembly, and waveguide assembly connects microwave plug, and microwave plug is arranged on cylinder cap；
Control unit of engine issues instructions to repeat pulse power, pulse electric energy needed for repeat pulse power output microwave source, and produce microwave pulse by microwave source, after microwave distributor receives the instruction of control unit of engine, microwave pulse is transferred to microwave plug through waveguide assembly, is transferred to like clockwork in the cylinder needing to light a fire, by microwave pulse is incorporated into combustor, excite the gaseous mixture in ignition combustion chamber, it is achieved deflagrate.
2. a kind of microwave-excitation hcci engine ignition control device as claimed in claim 1, it is characterised in that described repeat pulse power utilizes the existing high pressure of electromotor to produce circuit and converts.
3. apply the microwave-excitation hcci engine ignition control method of a kind of microwave-excitation hcci engine ignition control device as claimed in claim 1, it is characterised in that specifically comprise the following steps that
Step one, by microwave distributor and waveguide assembly, microwave source being connected microwave plug, microwave plug is arranged in cylinder head；
Step 2, at the suction stroke initial stage, fuel injector sprays into quantitative fuel oil to combustor, fuel oil evaporate in combustor formation homogeneous charge；
Step 3, control unit of engine issue instructions to repeat pulse power, and repeat pulse power sends pulse electric energy；
Step 4, pulse electric energy are converted into microwave pulse by microwave source；
Step 5, microwave distributor accept the instruction that control unit of engine sends, and by waveguide assembly, microwave pulse is passed to microwave plug；
Step 6, microwave pulse be transmitted directly to need to light a fire by microwave plug cylinder combustor in, excite igniting.
4. a kind of microwave-excitation hcci engine ignition control method as claimed in claim 3, it is characterized in that, in described step 6: microwave pulse is transferred in certain combustor needing igniting cylinder, excite the gaseous mixture in ignition combustion chamber: when certain cylinder needs igniting, the microwave channel of this cylinder is opened by microwave distributor, and microwave pulse is all transferred to this cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610245110.3A CN105822484A (en) | 2016-04-19 | 2016-04-19 | Microwave excitation ignition control device for HCCI engine and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610245110.3A CN105822484A (en) | 2016-04-19 | 2016-04-19 | Microwave excitation ignition control device for HCCI engine and control method |
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| CN201610245110.3A Pending CN105822484A (en) | 2016-04-19 | 2016-04-19 | Microwave excitation ignition control device for HCCI engine and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209729A (en) * | 2018-09-18 | 2019-01-15 | 深圳市奥谱太赫兹技术研究院 | A kind of microwave ignition system can be applied to engine chamber and method |
| CN116291851A (en) * | 2023-02-13 | 2023-06-23 | 合肥工业大学 | Homogeneous charge compression ignition device and method thereof |
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| US3934566A (en) * | 1974-08-12 | 1976-01-27 | Ward Michael A V | Combustion in an internal combustion engine |
| CN1233314A (en) * | 1996-09-30 | 1999-10-27 | 马修·马克·贝比克 | Ignition by electromagnetic radiation |
| DE19914941C1 (en) * | 1999-04-01 | 2000-05-25 | Daimler Chrysler Ag | Microwave-assisted mixture burning for internal combustion engine involves additional microwave recipient material, including drops of substance thermally activated by microwaves |
| CN1693699A (en) * | 2005-06-16 | 2005-11-09 | 王刚毅 | Microwave ignition system for improving combustion efficiency of internal combustion engine |
| CN101305183A (en) * | 2005-09-09 | 2008-11-12 | Btu国际公司 | Microwave combustion system for internal combustion engines |
| JP2013096289A (en) * | 2011-10-31 | 2013-05-20 | Daihatsu Motor Co Ltd | Spark ignition type internal combustion engine |
| US20150068479A1 (en) * | 2011-09-22 | 2015-03-12 | Imagineering, Inc. | Plasma generating device, and internal combustion engine |
| DE202015001430U1 (en) * | 2015-02-23 | 2015-03-13 | Arkadiy Magarshak | internal combustion engine |
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2016
- 2016-04-19 CN CN201610245110.3A patent/CN105822484A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934566A (en) * | 1974-08-12 | 1976-01-27 | Ward Michael A V | Combustion in an internal combustion engine |
| CN1233314A (en) * | 1996-09-30 | 1999-10-27 | 马修·马克·贝比克 | Ignition by electromagnetic radiation |
| DE19914941C1 (en) * | 1999-04-01 | 2000-05-25 | Daimler Chrysler Ag | Microwave-assisted mixture burning for internal combustion engine involves additional microwave recipient material, including drops of substance thermally activated by microwaves |
| CN1693699A (en) * | 2005-06-16 | 2005-11-09 | 王刚毅 | Microwave ignition system for improving combustion efficiency of internal combustion engine |
| CN101305183A (en) * | 2005-09-09 | 2008-11-12 | Btu国际公司 | Microwave combustion system for internal combustion engines |
| US20150068479A1 (en) * | 2011-09-22 | 2015-03-12 | Imagineering, Inc. | Plasma generating device, and internal combustion engine |
| JP2013096289A (en) * | 2011-10-31 | 2013-05-20 | Daihatsu Motor Co Ltd | Spark ignition type internal combustion engine |
| DE202015001430U1 (en) * | 2015-02-23 | 2015-03-13 | Arkadiy Magarshak | internal combustion engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209729A (en) * | 2018-09-18 | 2019-01-15 | 深圳市奥谱太赫兹技术研究院 | A kind of microwave ignition system can be applied to engine chamber and method |
| CN116291851A (en) * | 2023-02-13 | 2023-06-23 | 合肥工业大学 | Homogeneous charge compression ignition device and method thereof |
| CN116291851B (en) * | 2023-02-13 | 2023-10-20 | 合肥工业大学 | Homogeneous charge compression ignition device and method thereof |
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Application publication date: 20160803 |
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