CN102953800A - Ignition method of pre-combustion chamber of diesel-dual-fuel engine - Google Patents
Ignition method of pre-combustion chamber of diesel-dual-fuel engine Download PDFInfo
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- CN102953800A CN102953800A CN2012104398803A CN201210439880A CN102953800A CN 102953800 A CN102953800 A CN 102953800A CN 2012104398803 A CN2012104398803 A CN 2012104398803A CN 201210439880 A CN201210439880 A CN 201210439880A CN 102953800 A CN102953800 A CN 102953800A
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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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Abstract
The invention discloses an ignition method of a pre-combustion chamber of a diesel-dual-fuel engine, which belongs to the fields of the mixed burning of diesel and non-diesel fuels and the control of the mixed burning. Under the condition without changing an air cylinder head, a ball type combustion chamber body is arranged in an installation hole of a diesel injector, a diesel high-pressure common-rail injector is arranged above the pre-combustion chamber, a connecting channel is arranged under the pre-combustion chamber and is connected to a main combustion chamber, an injector is controlled to injecting diesel to the pre-combustion chamber by an electronic control unit, thus a fuel-air mixture can be ignited, formed high-temperature combustion flame can be injected to the main combustion chamber through the connecting channel, combustible mixture in the main combustion chamber can be quickly ignited, and the ignition of the diesel in the pre-combustion chamber can be realized. According to the ignition method disclosed by the invention, the existing engine is not needed to be changed, the ignition method is widely suitable for the existing diesel-dual-fuel engine which is in mass operation and is changed from a high-power diesel engine, and the purposes of energy saving and environment protection can be achieved.
Description
Technical field
The invention belongs to diesel oil-double fuel mixed combustion technical field of engines.
Background technique
When using non-diesel oil type fuel (for example rock gas, Aalcohols fuel) for high-power diesel engine, need to adopt spark ignition mode that the inflammable mixture in the firing chamber is lighted.Existing technological scheme mainly is divided into the igniting of two classes, one class is that single non-diesel oil type fuel adopts the electronics spark ignition mode, and this firing mode often shows as the spark energy deficiency on the larger motor of cylinder diameter, cause after-burning to increase, excessive discharge temperature, and spark plug life is shorter; Another kind of is in precombustion chamber of engine cylinder head design, the sub-fraction of inflammable gas in the firing chamber is imported precombustion chamber, a small-sized electric control diesel high pressure common rail injector is installed in precombustion chamber, in the time of near piston moves to top dead center, electric-controlled fuel injector sprays the air mixing after-combustion in the High Temperature High Pressure inflammable mixture in a small amount of high-pressure diesel and the precombustion chamber in the precombustion chamber, the gas that burns in the precombustion chamber ignites the inflammable mixture in the main combustion chamber rapidly after spraying into cylinder, finish igniting process, it is diesel oil precombustion-chamber ignition pattern, strict says, this combustion manner is a kind of of duel fuel engine.Diesel oil precombustion-chamber ignition pattern is used as a new technology in high-power marine natural gas engine and power station natural gas engine.
Above-mentioned diesel oil precombustion-chamber ignition pattern, owing to need to design precombustion chamber at cylinder head, on newly-designed motor, can be realized easily, and for existing a large amount of operating motors, will be in precombustion chamber of cylinder head processing, relate to a series of difficult problems such as cylinder head cooling jacket, implement difficult.
The present invention has designed and has a kind ofly utilized the original oil sprayer installing space of high-power diesel engine, in the situation that cylinder head is not done change, realizes diesel oil precombustion-chamber ignition pattern.
Summary of the invention
As shown in Figure 1, the present invention installs a spherical combustion chamber body in former diesel injector mounting hole, this firing chamber body profile cooperates with former mounting hole, be processed into an oval precombustion chamber in the body, the oily Shu Peihe of the shape of precombustion chamber and oil nozzle ejection, to form good combustible oil gas mixture, be convenient to rapid ignition; The small diesel engine high pressure common rail injector is housed above the precombustion chamber body, under the control of electronic control unit to prechamber injection diesel oil; Below precombustion chamber, be provided with a passage and connect main combustion chamber, when motor is in compression stroke, fuel air mixture in the cylinder enters precombustion chamber by this connecting passage, after the fuel air mixture that enters precombustion chamber is injected into precombustion chamber diesel oil ignited, high-temp combustion flame sprays into main combustion chamber through this connecting passage, and the inflammable mixture of main combustion chamber is lighted rapidly.Thus, finish the diesel oil ignited igniting process of precombustion chamber.
Description of drawings
Accompanying drawing 1: diesel oil-duel fuel engine precombustion-chamber igniter
1-piston, 2-cylinder wall, 3-cylinder head, the former machine mounting hole of oil sprayer of 4-, 5-high pressure common rail injector, 6-oil nozzle, 7-firing chamber body, 8-precombustion chamber, 9-oil spout oil bundle, 10-precombustion chamber and main combustion chamber passage, 11-main combustion chamber
Accompanying drawing 2: diesel oil-natural gas engine precombustion-chamber ignition method schematic diagram
12-gas inlet, 13-air inlet, 14-gas spraying injection device, 15-turbosupercharger, 16-high-pressure oil pipe, 17-high-pressure common-rail oil pump, 18-high-pressure common rail body, 19-engine block
Embodiment
Take accompanying drawing 2 enforcement of the present invention as example illustrates:
(1) natural gas via gas spraying injection device 14 is inhaled into cylinder after spraying in the engine air inlet tube and mixing with air in the engine charge stroke.
(2) the air natural gas mixture of suction cylinder is compressed at the engine compresses stroke, form the inflammable mixture of High Temperature High Pressure, wherein the part inflammable mixture enters precombustion chamber through precombustion chamber and main combustion chamber path 10, and the temperature of this moment does not reach the burning-point of rock gas.Precombustion chamber is the 5-10% of main combustion chamber volume.
(3) the compression stroke piston near top dead center near the time, electronic control unit ECU opens solenoid valve on the high pressure common rail injector 5, the high pressure fuel that stores in the high-pressure common rail body sprays into precombustion chamber 8 through high-pressure oil pipe 16 by oil nozzle 6, after mixing with air, fuel spray produces the rock gas of spontaneous combustion and the precombustion chamber of igniting, the combustion gas of High Temperature High Pressure spray at a high speed main combustion chamber through precombustion chamber and main combustion chamber path 10, its energy is enough to light the mixture of various air/rock gas mixed proportion much larger than the spark ignition energy of traditional gas machine.High pressure fuel in the high-pressure common rail rail body is supplied with by high-pressure common-rail oil pump.
(4) control of above-mentioned natural gas injection and high pressure co-rail system is carried out according to the program of in advance design by electronic control unit ECU.
Although present embodiment is narrated for natural gas engine, can be applicable to the spark-ignition engine that all similarly need the macro-energy igniting.
Claims (1)
1. diesel oil-duel fuel engine precombustion-chamber ignition method, it is characterized in that in former diesel injector mounting hole, installing a firing chamber body, this firing chamber body profile cooperates with former mounting hole, be processed into an oval precombustion chamber in the body, the small diesel engine high pressure common rail injector is equipped with in the precombustion chamber top, to prechamber injection diesel oil, the precombustion chamber below is provided with a passage and connects main combustion chamber under the control of electronic control unit; When motor is in compression stroke, fuel air mixture in the cylinder enters precombustion chamber by this connecting passage, after the fuel air mixture that enters precombustion chamber is injected into precombustion chamber diesel oil ignited, high-temp combustion flame sprays into main combustion chamber through this connecting passage, and the inflammable mixture of main combustion chamber is lighted rapidly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104398803A CN102953800A (en) | 2012-11-07 | 2012-11-07 | Ignition method of pre-combustion chamber of diesel-dual-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104398803A CN102953800A (en) | 2012-11-07 | 2012-11-07 | Ignition method of pre-combustion chamber of diesel-dual-fuel engine |
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| CN102953800A true CN102953800A (en) | 2013-03-06 |
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| CN2012104398803A Pending CN102953800A (en) | 2012-11-07 | 2012-11-07 | Ignition method of pre-combustion chamber of diesel-dual-fuel engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460741A (en) * | 2014-03-17 | 2017-02-22 | 伍德沃德有限公司 | Use of prechambers with dual fuel source engines |
| CN107829816A (en) * | 2017-11-28 | 2018-03-23 | 天津大学 | A kind of combustion chamber for realizing flame acceleration spread restraint pinking |
| CN109184982A (en) * | 2018-09-29 | 2019-01-11 | 哈尔滨工程大学 | A kind of natural gas engine burning tissues method ignited using manifold multi-injection, precombustion chamber low pressure gas supply and the micro- spray of diesel oil |
| CN109296446A (en) * | 2018-09-29 | 2019-02-01 | 哈尔滨工程大学 | A kind of diesel oil with natural gas high-low pressure mixing jetting and precombustion chamber is micro- to spray natural gas engine burning tissues method of igniting |
| CN109899150A (en) * | 2019-02-18 | 2019-06-18 | 哈尔滨工程大学 | One kind being suitable for the micro- spray diesel oil of large-diameter-natural gas double fuel engine stratified combustion control method |
| CN113464267A (en) * | 2021-06-29 | 2021-10-01 | 吉林大学 | Common-rail type jet ignition system of pre-combustion chamber |
Citations (6)
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| CN2526516Y (en) * | 2002-03-11 | 2002-12-18 | 合肥工业大学 | Electrocontrolled common rail multi-fuel injector for engine |
| CN1563681A (en) * | 2004-03-18 | 2005-01-12 | 大连理工大学 | Igniting combustion system of engine preburning chamber |
| JP2010203428A (en) * | 2009-03-04 | 2010-09-16 | Nippon Clean Engine Lab Co Ltd | Premixed fuel collision diffusion system internal combustion engine |
| US20110146618A1 (en) * | 2009-12-22 | 2011-06-23 | Lapointe Leon A | Pre-combustion device for an internal combustion engine |
| CN202348505U (en) * | 2011-11-17 | 2012-07-25 | 东风朝阳朝柴动力有限公司 | High-pressure common rail oil injection vortex type combustion system |
| CN202954878U (en) * | 2012-11-07 | 2013-05-29 | 镇江恒驰科技有限公司 | Diesel-double fuel engine prechamber ignition device |
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2012
- 2012-11-07 CN CN2012104398803A patent/CN102953800A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526516Y (en) * | 2002-03-11 | 2002-12-18 | 合肥工业大学 | Electrocontrolled common rail multi-fuel injector for engine |
| CN1563681A (en) * | 2004-03-18 | 2005-01-12 | 大连理工大学 | Igniting combustion system of engine preburning chamber |
| JP2010203428A (en) * | 2009-03-04 | 2010-09-16 | Nippon Clean Engine Lab Co Ltd | Premixed fuel collision diffusion system internal combustion engine |
| US20110146618A1 (en) * | 2009-12-22 | 2011-06-23 | Lapointe Leon A | Pre-combustion device for an internal combustion engine |
| CN202348505U (en) * | 2011-11-17 | 2012-07-25 | 东风朝阳朝柴动力有限公司 | High-pressure common rail oil injection vortex type combustion system |
| CN202954878U (en) * | 2012-11-07 | 2013-05-29 | 镇江恒驰科技有限公司 | Diesel-double fuel engine prechamber ignition device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460741A (en) * | 2014-03-17 | 2017-02-22 | 伍德沃德有限公司 | Use of prechambers with dual fuel source engines |
| CN114718782A (en) * | 2014-03-17 | 2022-07-08 | 伍德沃德有限公司 | Use of prechambers in dual fuel source engines |
| CN107829816A (en) * | 2017-11-28 | 2018-03-23 | 天津大学 | A kind of combustion chamber for realizing flame acceleration spread restraint pinking |
| CN109184982A (en) * | 2018-09-29 | 2019-01-11 | 哈尔滨工程大学 | A kind of natural gas engine burning tissues method ignited using manifold multi-injection, precombustion chamber low pressure gas supply and the micro- spray of diesel oil |
| CN109296446A (en) * | 2018-09-29 | 2019-02-01 | 哈尔滨工程大学 | A kind of diesel oil with natural gas high-low pressure mixing jetting and precombustion chamber is micro- to spray natural gas engine burning tissues method of igniting |
| CN109296446B (en) * | 2018-09-29 | 2020-12-04 | 哈尔滨工程大学 | Diesel micro-injection ignition natural gas engine combustion organization method with natural gas high-low pressure mixed injection and pre-combustion chamber |
| CN109899150A (en) * | 2019-02-18 | 2019-06-18 | 哈尔滨工程大学 | One kind being suitable for the micro- spray diesel oil of large-diameter-natural gas double fuel engine stratified combustion control method |
| CN113464267A (en) * | 2021-06-29 | 2021-10-01 | 吉林大学 | Common-rail type jet ignition system of pre-combustion chamber |
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Application publication date: 20130306 |