CN102251885A - High-temperature and high-pressure fuel supply method and device for marine diesel engine - Google Patents
High-temperature and high-pressure fuel supply method and device for marine diesel engine Download PDFInfo
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- CN102251885A CN102251885A CN 201110210545 CN201110210545A CN102251885A CN 102251885 A CN102251885 A CN 102251885A CN 201110210545 CN201110210545 CN 201110210545 CN 201110210545 A CN201110210545 A CN 201110210545A CN 102251885 A CN102251885 A CN 102251885A
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Abstract
The invention discloses a high-temperature and high-pressure fuel supply method and a high-temperature and high-pressure fuel supply device for a marine diesel engine, and relates to a diesel engine fuel jet system. The high-temperature condition required by fuel jet is formed in a high-pressure common track, heat of the exhaust of the marine engine is used as a heat source of a steam generator, a steam heat exchanger is arranged outside the wall of the high-pressure common track, fuel in the high-pressure common track is heated to a set temperature by the high-temperature steam generated in the steam generator through the steam heat exchanger, a master control unit sends instructions to an exhaust heat exchange control cabinet according to the temperature signals fed back by the steam generator and the high-pressure common track to control the steam heat exchange quantity, sufficient fuel is compressed through a fuel injection pump and then stably heated in the high-pressure common track, finally, sufficient stable high-temperature and high-pressure fuel is formed and enters an electric fuel spray nozzle assembly, and the spraying effect of the diesel engine in a high-temperature and high-pressure state is achieved. According to the method and the device, the temperature of the fuel in the high-pressure common track can reach 200 to 250 DEG C, and the error range of accurate control is +/- 3 DEG C.
Description
Technical field
The present invention relates to diesel fuel injection system, is a kind of marine diesel engine High Temperature High Pressure fuel delivery method and device specifically.
Background technique
Because good power character and Economy, diesel engine has been widely used in all trades and professions of national product, and along with the exhaustion of fossil energy and global human settlement's deterioration, the laws and regulations of various countries are to the emission limit set of diesel engine also increasingly stringent; The diesel engine high-pressure ejecting system then provides a kind of new fuel delivery mode that improves engine fuel economy, power character and emission performance simultaneously; This technology has been obtained remarkable achievement abroad, domestic research to high pressure co-rail system is started late, also there is not to form more perfect system, the employing electronic control system that existing high pressure co-rail system is more, yet diesel engine, the bavin boats and ships oil machine main fuel that particularly fires heavy oil is a heavy diesel, at present, be difficult to only promote the reduced fuel oil atomizing to obtain firing effect preferably by improving jet pressure, and the marine diesel engine mesohigh altogether the rail technology do not properly settle the high voltage supply problem of heavy oil all the time, also be the also unsolved problem of relevant at present scholar in marine diesel engine how with high pressure and superhigh pressure technique widespread usage.
At present existing scholar's research the influence of fuel injection temperature to fuel atomization, as people such as Su Han Park at " Macroscopic spray characteristics and breakup performance of dimethyl ether (DME) fuel at high fuel temperatures and ambient conditions " Fuel 89 (2010) 3001-3011, adopt steam-heated mode on the high-pressure oil pipe between oily rail and the oil nozzle, to carry out heat treated in one literary composition, test show dimethyl ether atomizing effect under high temperature condition, obtained raising to a certain degree; People such as Xu Zhaokun are at " pilot study of diesel engine part homogeneous premixed combustion mode " compact internal combustion engine and motorcycle 37(2008) be that the basis points out that ordinary diesel oil is heated to 160 ℃ and just can realizes vaporising and jet in the research of 1-4 with 135 diesel engines, this pattern has reduced the requirement to fuel injection system, reduced the dependence to intake swirl and compression swirl, intake duct and Combustion chamber design also can be simplified greatly; The fuel Heating module that adopts in the above-mentioned research experiment can't provide sufficient continuous high temperature fuel oil for injection according to diesel engine condition, does not propose a kind of high temperature fuel oil supply device or feasible method that can assemble use on diesel engine.For another patent 200810225704.3 " a kind of high pressure common rail electric control fuel injector ", 200710106030.0 " solenoid valves " all are the component of research high pressure co-rail system, have not yet to see the unify relevant patented technology of method of diesel engine high temperature fuel supply system.
Summary of the invention
Based on domestic and international research present situation and prior art condition, for in marine diesel engine, obtaining the fuel injection atomizing effect under the high-temperature and high-pressure conditions, make full use of the heat of recirculated cooling water and tail gas simultaneously, the invention provides a kind of marine diesel engine high pressure-temperature fuel delivery method and device that utilizes waste heat, be mainly used on boats and ships and the engineering machinery.
Realize that technological scheme of the present invention is:
A kind of marine diesel engine High Temperature High Pressure fuel delivery method, it is characterized in that: the needed high temperature condition of fuel injection forms in the high pressure common rail, utilize the main thermal source of the heat of marine engine exhaust emissions as steam generator, high pressure common rail wall is provided with vapor heat exchanger outward, fuel oil in the high pressure common rail is heated to setting temperature by the high-temperature steam that produces in the steam generator through vapor heat exchanger, tail gas heat exchange control cabinet enters the temperature of the steam flow of vapor heat exchanger with control steam heating fuel oil by the steam regulation generator, in the high pressure common rail, be stabilized heating through Injection Pump pressurization back with the fuel oil of realizing capacity, the final stable High Temperature High Pressure fuel oil that forms capacity enters the electronic control injection nozzle assembly, thereby obtains the spray effect under the diesel engine high-temperature high-pressure state.
Be respectively equipped with thermocouple on high pressure common rail and the steam generator, the temperature signal of fuel oil and high-temperature steam is transferred to the master control unit, the master control unit is controlled in real time to tail gas heat exchange control cabinet, and tail gas heat exchange control cabinet is located at the steam flow that automatically controlled throttle valve control steam generator on the vapor heat exchanger steam inlet end enters vapor heat exchanger by control and guarantees that the temperature stabilization of track intermediate fuel oil is in setting range.
The high pressure common rail is provided with high-pressure overflow valve, guarantees that rail pressure in reasonable with safe scope, is provided with safety valve on vapor heat exchanger steam (vapor) outlet end, guarantees the safe operation of steam heating circuit.
A kind of marine diesel engine High Temperature High Pressure fuel oil supply device, comprise the electric-controlled fuel injector assembly, the high pressure common rail, Injection Pump and master control unit, it is characterized in that: the high pressure common rail is set between electronic control injection nozzle assembly and the Injection Pump, on the high pressure common rail, vapor heat exchanger is set, vapor heat exchanger links to each other with steam generator, on high pressure common rail and steam generator, be respectively equipped with thermocouple, the temperature signal of high-temperature steam is transferred to the master control unit by thermocouple in high pressure common rail and the steam generator, the master control unit sends command signal according to temperature information to tail gas heat exchange control cabinet, and tail gas heat exchange control cabinet enters the temperature of the steam flow control steam heating fuel oil of vapor heat exchanger by the steam regulation generator.
Described a kind of marine diesel engine High Temperature High Pressure fuel oil supply device is characterized in that: be provided with automatically controlled throttle valve on vapor heat exchanger steam inlet end, vapor heat exchanger steam (vapor) outlet end is provided with safety valve.
The high pressure common rail be the fuel oil parts that form stable high voltage be again fuel oil is heated to assigned temperature by high-temperature steam parts, high pressure common rail two ends are used high-pressure oil pipe and Injection Pump respectively, injector assembly links to each other, on the high pressure common rail vapor heat exchanger is set, fuel oil in the track is heated to setting temperature by the high-temperature steam in the vapor heat exchanger, the tail gas heat exchange controller is in order to the temperature of control steam heating fuel oil, the temperature signal of fuel oil in the high pressure common rail, the temperature signal of high-temperature steam all is transferred to the master control unit by thermocouple in the steam generator, the master control unit sends command signal according to temperature and pressure information to tail gas heat exchange control cabinet, and the steam heat-exchanging amount is controlled.
The present invention compared with prior art has following advantage: utilize the heat of the waste gas of marine engine discharge to improve the fuel injection temperature, high temperature can reduce the viscosity of heavy diesel, improves power character, Economy and the emission performance of diesel combustion; Heating module adopts the high pressure common rail, is installed in the Injection Pump downstream, has avoided the high temperature fuel oil to cross because of viscosity and has lowly made that precision pair lost efficacy in the Injection Pump, has avoided in high-pressure oil pipe directly heated fuel oil; Steam heating helps to improve the pressure of fuel oil in the track, the capacity that track is bigger has guaranteed the capacity supply of high temperature fuel oil, heating helps easily to realize the high pressure of fuel oil to common rail, reduced the mechanical load of high pressure oil pump, and high pressure conditions can reduce the volumetric expansion of fuel oil in heating process, increase the reserves of high-temperature high-pressure state fuel oil in the track, the High Temperature High Pressure fuel oil energy is realized dodging anxious boiling and is sprayed.
Description of drawings
Fig. 1 is a structural principle schematic representation of the present invention;
1. electronic control injection nozzle assembly 2. high-pressure overflow valves 3. vapor heat exchangers 4. high pressure common rail 5. Injection Pumps 6. master control unit 7. tail gas heat exchange control cabinets, 8. steam generators, 9. safety valves 10,13. thermocouple 11,14. pressure transducers 12 automatically controlled throttle valve.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, high pressure co-rail diesel machine high temperature fuel oil supply device is mainly by electric-controlled fuel injector assembly 1, thermocouple 10,13, high pressure common rail 4, steam generator 8, automatically controlled throttle valve 12, safety valve 9, vapor heat exchanger 3, Injection Pump 5 and master control unit 6 are formed, wherein Injection Pump 5, and high pressure common rail 4 and electric-controlled fuel injector assembly 1 adopt high-pressure oil pipe to be linked in sequence, and vapor heat exchanger 3 is set on the high pressure common rail 4, fuel oil in the high pressure common rail 4 is heated to setting temperature by the high-temperature steam that produces in the steam generator 8 through vapor heat exchanger 3, tail gas heat exchange control cabinet 7 is in order to the temperature of control steam heating fuel oil, the temperature signal of fuel oils in the high pressure common rail 4, and the temperature signal of high-temperature steams is transferred to master control unit 6 by thermocouple 13 and thermocouple 10 respectively in the steam generator 8, master control unit 6 sends command signal according to temperature signal to tail gas heat exchange control cabinet 7, controls by 12 pairs of steam flows of automatically controlled throttle valve.
During the diesel engine proper functioning, fuel oil at first produces high pressure by Injection Pump 5, enter high pressure common rail 4, heating through vapor heat exchanger 3 produces stable high-temperature high-pressure state, enter electronic control injection nozzle assembly 1 and spray, wherein high-pressure overflow valve 2 ensures that the pressure in the high pressure common rail 4 is no more than safety pressure, and safety valve 9 ensures the safe operation of vapor recycle, the present invention can be so that high pressure common rail 4 intermediate fuel oil temperature reach 200 ~ 250 ℃, and accurately the margin of error of control is ± 3 ℃.
Claims (4)
1. marine diesel engine High Temperature High Pressure fuel delivery method, it is characterized in that: the needed high temperature condition of fuel injection forms in the high pressure common rail, utilize the main thermal source of the heat of marine engine exhaust emissions as steam generator, high pressure common rail wall is provided with vapor heat exchanger outward, fuel oil in the high pressure common rail is heated to setting temperature by the high-temperature steam that produces in the steam generator through vapor heat exchanger, the temperature signal of coming according to steam generator and high pressure common rail feedback in the master control unit sends instruction to tail gas heat exchange control cabinet, the steam heat-exchanging amount is controlled, in the high pressure common rail, be stabilized heating through Injection Pump pressurization back with the fuel oil of realizing capacity, the final stable High Temperature High Pressure fuel oil that forms capacity enters the electronic control injection nozzle assembly, thereby obtains the spray effect under the diesel engine high-temperature high-pressure state.
2. a kind of marine diesel engine High Temperature High Pressure fuel delivery method as claimed in claim 1, it is characterized in that: on described high pressure common rail and steam generator, be respectively equipped with thermocouple, the temperature signal of fuel oil and high-temperature steam is transferred to the master control unit, the master control unit is controlled in real time to tail gas heat exchange control cabinet, and tail gas heat exchange control cabinet is located at the steam flow that automatically controlled throttle valve control steam generator on the vapor heat exchanger steam inlet end enters vapor heat exchanger by control and guarantees that the temperature stabilization of track intermediate fuel oil is in setting range.
3. marine diesel engine High Temperature High Pressure fuel oil supply device, comprise electric-controlled fuel injector assembly (1), high pressure common rail (4), Injection Pump (5) and master control unit (6), it is characterized in that: between electronic control injection nozzle assembly (1) and the Injection Pump (5) high pressure common rail (4) is set, vapor heat exchanger (3) is set on high pressure common rail (4), vapor heat exchanger (3) links to each other with steam generator (8), on high pressure common rail (4) and steam generator (8), be respectively equipped with thermocouple (10) (13), the temperature signal of high pressure common rail (4) and the interior high-temperature steam of steam generator (8) is transferred to master control unit (6) by thermocouple (10) (13), master control unit (6) sends command signal according to temperature information to tail gas heat exchange control cabinet (7), and tail gas heat exchange control cabinet (7) enters the temperature of the steam flow control steam heating fuel oil of vapor heat exchanger (3) by steam regulation generator (8).
4. a kind of marine diesel engine High Temperature High Pressure fuel oil supply device as claimed in claim 3 is characterized in that: be provided with automatically controlled throttle valve (12) on vapor heat exchanger (3) steam inlet end, vapor heat exchanger (3) steam (vapor) outlet end is provided with safety valve (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110210545 CN102251885A (en) | 2011-07-26 | 2011-07-26 | High-temperature and high-pressure fuel supply method and device for marine diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110210545 CN102251885A (en) | 2011-07-26 | 2011-07-26 | High-temperature and high-pressure fuel supply method and device for marine diesel engine |
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| CN102251885A true CN102251885A (en) | 2011-11-23 |
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| CN 201110210545 Pending CN102251885A (en) | 2011-07-26 | 2011-07-26 | High-temperature and high-pressure fuel supply method and device for marine diesel engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047773A (en) * | 2014-06-09 | 2014-09-17 | 南通中意达自动化设备科技有限公司 | Parallel fuel preheater |
| CN104111271A (en) * | 2014-07-11 | 2014-10-22 | 哈尔滨工程大学 | Temperature nonuniformity measuring device for marine steam accumulator |
| CN104110332A (en) * | 2014-06-09 | 2014-10-22 | 南通中意达自动化设备科技有限公司 | Temperature control type waste gas heating oil fuel device |
| CN104196655A (en) * | 2014-08-11 | 2014-12-10 | 郭守亮 | High-temperature evaporation type oil supplying device of miniature engine |
| CN105626324A (en) * | 2016-03-22 | 2016-06-01 | 上海船舶研究设计院 | Control method and control system for obtaining high-temperature fuel in ship fuel preheating system |
| CN109723586A (en) * | 2019-01-28 | 2019-05-07 | 西华大学 | For being in solid bio-fuel feedway under the normal temperature and pressure of internal combustion engine |
| CN113154919A (en) * | 2021-02-05 | 2021-07-23 | 南通大学 | Low-temperature tail gas waste heat recovery device and system capable of being used for heat preservation of ship heavy oil conveying pipeline |
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| GB686837A (en) * | 1949-12-07 | 1953-02-04 | Doxford William & Sons Ltd | Improvements in or relating to internal combustion engines using high viscosity oil fuel |
| JPS6161957A (en) * | 1984-08-31 | 1986-03-29 | Hitachi Zosen Corp | Oil heating method of two-stage heating type |
| CN2073539U (en) * | 1989-04-14 | 1991-03-20 | 王石腾 | Waste heat utilizing facilities of motor |
| US5992353A (en) * | 1997-05-23 | 1999-11-30 | Posselt; Werner | Method for operating an internal combustion engine and the latter itself |
| JP2004528511A (en) * | 2001-06-01 | 2004-09-16 | ベイポレイト・プロプライエタリー・リミテッド | Fuel supply system |
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2011
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB686837A (en) * | 1949-12-07 | 1953-02-04 | Doxford William & Sons Ltd | Improvements in or relating to internal combustion engines using high viscosity oil fuel |
| JPS6161957A (en) * | 1984-08-31 | 1986-03-29 | Hitachi Zosen Corp | Oil heating method of two-stage heating type |
| CN2073539U (en) * | 1989-04-14 | 1991-03-20 | 王石腾 | Waste heat utilizing facilities of motor |
| US5992353A (en) * | 1997-05-23 | 1999-11-30 | Posselt; Werner | Method for operating an internal combustion engine and the latter itself |
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Non-Patent Citations (2)
| Title |
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| 《Energy Fuels》 20090827 Su Han Parkt等 Mixing Stability and Spray Behavior Characteristics of Diesel−Ethanol−Methyl Ester Blended Fuels in a Common-Rail Diesel Injection System 第5228-5231页、附图1-2 1-4 第23卷, 第10期 * |
| 《FUEL》 20100521 Su Han Park等 Macroscopic spray characteristics and breakup performance of dimethyl ether (DME) fuel at high fuel temperatures and ambient conditions 第3001-3011页 1-4 第89卷, 第10期 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047773A (en) * | 2014-06-09 | 2014-09-17 | 南通中意达自动化设备科技有限公司 | Parallel fuel preheater |
| CN104110332A (en) * | 2014-06-09 | 2014-10-22 | 南通中意达自动化设备科技有限公司 | Temperature control type waste gas heating oil fuel device |
| CN104111271A (en) * | 2014-07-11 | 2014-10-22 | 哈尔滨工程大学 | Temperature nonuniformity measuring device for marine steam accumulator |
| CN104196655A (en) * | 2014-08-11 | 2014-12-10 | 郭守亮 | High-temperature evaporation type oil supplying device of miniature engine |
| CN105626324A (en) * | 2016-03-22 | 2016-06-01 | 上海船舶研究设计院 | Control method and control system for obtaining high-temperature fuel in ship fuel preheating system |
| CN105626324B (en) * | 2016-03-22 | 2018-03-02 | 上海船舶研究设计院 | The control method and system that marine fuel oil pre-heating system high temperature fuel oil obtains |
| CN109723586A (en) * | 2019-01-28 | 2019-05-07 | 西华大学 | For being in solid bio-fuel feedway under the normal temperature and pressure of internal combustion engine |
| CN109723586B (en) * | 2019-01-28 | 2023-08-18 | 西华大学 | Solid biofuel supply device for internal combustion engine at normal temperature and normal pressure |
| CN113154919A (en) * | 2021-02-05 | 2021-07-23 | 南通大学 | Low-temperature tail gas waste heat recovery device and system capable of being used for heat preservation of ship heavy oil conveying pipeline |
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Application publication date: 20111123 |