CN202732124U - Liquefied natural gas (LNG)/diesel oil double-fuel oil-gas connecting electronic control supply system of marine engine - Google Patents
Liquefied natural gas (LNG)/diesel oil double-fuel oil-gas connecting electronic control supply system of marine engine Download PDFInfo
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- CN202732124U CN202732124U CN201220104091XU CN201220104091U CN202732124U CN 202732124 U CN202732124 U CN 202732124U CN 201220104091X U CN201220104091X U CN 201220104091XU CN 201220104091 U CN201220104091 U CN 201220104091U CN 202732124 U CN202732124 U CN 202732124U
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Abstract
The utility model discloses a liquefied natural gas (LNG)/diesel oil double-fuel oil-gas connecting electronic control supply system of a marine engine. The LNG/diesel oil double-fuel oil-gas connecting electronic control supply system comprises an LNG fuel supply subsystem, a diesel oil fuel supply subsystem and an LNG/diesel oil double-fuel connecting control subsystem. The LNG fuel supply subsystem supplies natural gas to the engine, the diesel oil fuel supply subsystem supplies diesel oil to the engine, and an engine electronic unit control signal of the LNG/diesel oil double-fuel connecting control subsystem precisely controls the natural gas quantity entering a commingler and the diesel oil quantity entering an engine cylinder. Along with the change of engine operating condition, flexible adjustment can be carried out on the ratio of the LNG fuel and the diesel oil fuel, the optimum performance of an LNG/diesel oil double-fuel marine engine can be achieved, economical performance of the marine engine can be improved greatly, carbon smoke emissions of a diesel engine can be reduced greatly, and atmospheric pollution is reduced.
Description
Technical field
The utility model relates to the engine of boat and ship fuel supply system, refers to that particularly a kind of marine engine double fuel oil gas of LNG Liquefied natural gas LNG and two kinds of fuel of diesel oil that provides joins automatically controlled accent supply system.
Background technique
Rock gas is that its molecular weight is less than normal take methane as main gaseous fuel, and the H/C value is up to about 4.Because rock gas is all gaseous state when mixing with air in motor, compare with diesel oil its mixed gas more even, the burning more complete, diesel engine is mixed and is burnt the carbon smoke exhaust that rock gas can the decrease diesel engine like this, reduce diesel engine to the pollution of atmosphere environment, can also improve the fuel structure of diesel engine simultaneously.Therefore, diesel oil is mixed the motor that burns rock gas and has been obtained using comparatively widely.
At present, diesel engine mix burn rock gas relevant apparatus normally for the diesel engine for automobile design, and diesel engine for automobile all adopts the two-stage type speed regulator, the two-stage type speed regulator only just works when diesel engine is lower than idling or is higher than rated speed, when diesel engine speed circle is between idling and rated speed, the two-stage type speed regulator is then inoperative, can directly control by gas pedal the fuel feed of diesel engine.And marine diesel engine is different from diesel engine for automobile, employing be variable-speed governor.Marine diesel engine is by the rotating speed of throttle control handle control diesel engine, and when and load diesel engine motionless when throttle control handle changes or fluctuate, variable-speed governor will increase and decrease the delivery volume of diesel oil automatically, makes diesel engine speed keep stable.How diesel oil and rock gas delivery volume are accurately controlled, with the best oil gas of realizing LNG/ diesel dual-fuel marine engine when the full distance speed regulating function, reach best mixing and burn effect, make marine engine have good power performance and economic performance, be the difficult problem that those skilled in the art attempt to solve always.
Summary of the invention
The purpose of this utility model will provide a kind of exactly can realize the work of marine engine LNG/ diesel dual-fuel, and the marine engine LNG/ diesel dual-fuel oil gas that satisfies best gas oil ratio and full distance speed regulating function joins automatically controlled accent supply system.
For achieving the above object, the designed marine engine LNG/ diesel dual-fuel oil gas of the utility model joins automatically controlled accent supply system, comprise that LNG Liquefied natural gas LNG fuel is supplied with subtense angle, diesel fuel is supplied with subtense angle and LNG/ diesel dual-fuel uniting and adjustment control subsystem, it is characterized in that:
Described LNG Liquefied natural gas LNG fuel is supplied with subtense angle and is comprised LNG Liquefied natural gas LNG bottle, the output terminal of liquefied natural gas bottle links to each other with the input end of vaporizer by feed liquid pipeline, the output terminal of vaporizer links to each other with the input end of natural gas flow control valve, the flow control end of natural gas flow control valve links to each other with gas discharge control final controlling element, the output terminal of natural gas flow control valve links to each other with the input end of air mixer, the output terminal of air mixer links to each other with the intake manifold of marine engine, thereby the mixed gas delivery that air and rock gas are formed is to the cylinder of marine engine.
Described diesel fuel is supplied with subtense angle and is comprised diesel fuel tank, the output terminal of diesel fuel tank links to each other with the input end of high pressure oil pump by oil supply pipeline, the pump rack control end of high pressure oil pump links to each other with the electronic speed regulation final controlling element, the high pressure oil delivery side of pump links to each other with the oil sprayer of marine engine, thus with diesel injection to the cylinder of marine engine.
Described LNG/ diesel dual-fuel uniting and adjustment control subsystem comprises the ECU ECU (Electrical Control Unit), the signal input part of ECU ECU (Electrical Control Unit) is connected to engine rotational speed signal sensor and throttle setting device, the cng signal output terminal control natural gas flow amount controller of ECU ECU (Electrical Control Unit) and gas discharge control final controlling element, diesel oil signal output part control electronic speed controller and the electronic speed regulation final controlling element of ECU ECU (Electrical Control Unit).
Further, described gas discharge control actuator driven rock gas control valve; The tooth bar of described electronic speed regulation actuator driven high pressure oil pump.
Further, be provided with natural gas filter, LNG vaporizer, regulator and natural gas flowmeter on the steam line between described LNG natural gas bottle and the natural gas flow control valve, to the rock gas that enters mixer vaporize, cleaning and pressure, flow control.Be provided with diesel fuel filter on the oil supply pipeline between described diesel fuel tank and the high pressure oil pump, diesel oil is carried out cleaning.
The utility model has the advantage of: marine engine LNG/ diesel dual-fuel oil gas joins in the automatically controlled accent supply system LNG Liquefied natural gas LNG fuel and supplies with subtense angle and supply with rock gas to motor, the fuel delivery subtense angle is supplied with diesel oil to motor, the LNG/ diesel dual-fuel is united the ECU ECU (Electrical Control Unit) control signal of regulating control subsystem and is accurately controlled the amount of natural gas that enters mixer and the diesel oil amount that sprays into cylinder, along with engine operating condition changes, can carry out soft readjustment to diesel oil and natural gas double-fuel ratio, realize best gas oil ratio, reach the optimum performance of LNG/ diesel dual-fuel marine engine, heighten the Economy of engine of boat and ship, can also discharge by the decrease diesel engine carbon black, reduce the pollution to atmosphere.
Description of drawings
Fig. 1 is the structural principle schematic representation that a kind of marine engine LNG/ diesel dual-fuel oil gas joins automatically controlled accent supply system.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Engine of boat and ship LNG/ diesel dual-fuel oil gas shown in the figure joins automatically controlled accent supply system, comprises that LNG Liquefied natural gas LNG fuel is supplied with subtense angle, diesel fuel is supplied with subtense angle and LNG/ diesel dual-fuel uniting and adjustment control subsystem.LNG Liquefied natural gas LNG fuel is supplied with subtense angle and is comprised LNG bottle 8, the output terminal of LNG bottle 8 links to each other by the input end of feed liquid pipeline with natural gas flow control valve 13, the flow control end of natural gas flow control valve 13 links to each other with gas discharge control final controlling element 14, the output terminal of natural gas flow control valve 13 links to each other with the input end of air mixer 15, the output terminal of air mixer 15 links to each other with the intake manifold of marine engine 4, thereby the mixed gas delivery that air and rock gas are formed is to the cylinder of marine engine 4.Gas discharge control final controlling element 14 is for adopting the driven by servomotor mechanism of electronic signal control.Be provided with LNG bottle outlet valve 9, LNG filter 10, LNG evaporating plant 11 and natural gas flowmeter 12 on the steam line between LNG bottle 8 and the natural gas flow control valve 13.
Diesel fuel is supplied with subtense angle and is comprised diesel fuel tank 1, the output terminal of diesel fuel tank 1 links to each other by the input end of oil supply pipeline with high pressure oil pump 5, the pump rack control end of high pressure oil pump 5 links to each other with electronic speed regulation final controlling element 6, the output terminal of high pressure oil pump 5 links to each other with the oil sprayer of marine engine 4, thus with diesel injection to the cylinder of marine engine 4.Electronic speed regulation final controlling element 6 is driven by the electronic speed controller 7 that adopts electronic signal control.Be provided with diesel oil stop valve 2 and diesel fuel filter 3 on the oil supply pipeline between diesel fuel tank 1 and the high pressure oil pump 5.
LNG/ diesel dual-fuel uniting and adjustment control subsystem comprises the ECU ECU (Electrical Control Unit) 17 that links to each other with storage battery 19, the tach signal input end of ECU ECU (Electrical Control Unit) 17 links to each other with engine rotation speed sensor 20, the throttle signal input end of ECU ECU (Electrical Control Unit) 17 links to each other with engine throttle setting device 18, the cng signal output terminal of ECU ECU (Electrical Control Unit) 17 links to each other with gas discharge control final controlling element 14 by natural gas flow amount controller 16, and the diesel oil signal output part of ECU ECU (Electrical Control Unit) 17 links to each other with electronic speed regulation final controlling element 6 by electronic speed controller 7.
The utility model engine of boat and ship LNG/ diesel dual-fuel oil gas joins automatically controlled accent supply system and is achieved in that LNG Liquefied natural gas LNG relies on liquid storage self evaporating pressure from liquefied natural gas bottle 8 out, flow into LNG evaporating plant 11 through natural gas filter 10 elimination impurity, rock gas after the evaporation is by natural gas flowmeter 12, pass through again the accurate control of natural gas flow control valve 13, enter at last the air mixer 15 that links to each other with engine of boat and ship 4 intake manifolds, form inflammable mixture after mixing with air for engine of boat and ship.Natural gas flow control valve 13 is driven by the natural gas flow amount controller 16 that receives ECU ECU (Electrical Control Unit) 17 control signals and gas discharge control final controlling element 14.
Simultaneously, electronic speed regulation final controlling element 6 on the high pressure oil pump 5 is by electronic speed controller 7 controls that receive ECU ECU (Electrical Control Unit) 17 control signals, directly drive pump rack, the diesel oil amount that enters cylinder is accurately controlled, thereby realize along with the engine of boat and ship working conditions change, to the soft readjustment of Oil/gas Fuels ratio, reach the optimum performance of LNG/ diesel dual-fuel marine engine.
Claims (5)
1. a marine engine LNG/ diesel dual-fuel oil gas joins automatically controlled accent supply system, comprises that LNG Liquefied natural gas LNG fuel is supplied with subtense angle, diesel fuel is supplied with subtense angle and LNG/ diesel dual-fuel uniting and adjustment control subsystem, it is characterized in that:
Described LNG Liquefied natural gas LNG fuel is supplied with subtense angle and is comprised liquefied natural gas bottle (8), the output terminal of liquefied natural gas bottle (8) links to each other by the input end of feed liquid pipeline with natural gas flow control valve (13), the flow control end of natural gas flow control valve (13) links to each other with gas discharge control final controlling element (14), the output terminal of natural gas flow control valve (13) links to each other with the input end of air mixer (15), the output terminal of air mixer (15) links to each other with the intake manifold of marine engine (4), thereby the mixed gas delivery that air and rock gas are formed is to the cylinder of marine engine (4);
Described diesel fuel is supplied with subtense angle and is comprised diesel fuel tank (1), the output terminal of diesel fuel tank (1) links to each other by the input end of oil supply pipeline with high pressure oil pump (5), the pump rack control end of high pressure oil pump (5) links to each other with electronic speed regulation final controlling element (6), the output terminal of high pressure oil pump (5) links to each other with the oil sprayer of marine engine (4), thus with diesel injection to the cylinder of marine engine (4);
Described LNG/ diesel dual-fuel uniting and adjustment control subsystem comprises ECU ECU (Electrical Control Unit) (17), the tach signal input end of ECU ECU (Electrical Control Unit) (17) links to each other with engine rotation speed sensor (20), the throttle signal input end of ECU ECU (Electrical Control Unit) (17) links to each other with engine throttle setting device (18), the cng signal output terminal of ECU ECU (Electrical Control Unit) (17) links to each other with gas discharge control final controlling element (14) by natural gas flow amount controller (16), and the diesel oil signal output part of ECU ECU (Electrical Control Unit) (17) links to each other with electronic speed regulation final controlling element (6) by electronic speed controller (7).
2. marine engine LNG/ diesel dual-fuel oil gas according to claim 1 joins automatically controlled accent supply system, it is characterized in that: described natural gas flow control valve (13) is driven by gas discharge control final controlling element (14); The high pressure oil pump tooth bar is driven by electronic speed regulation final controlling element (6).
3. marine engine LNG/ diesel dual-fuel oil gas according to claim 1 and 2 joins automatically controlled accent supply system, it is characterized in that: be provided with natural gas filter (10), LNG evaporating plant (11) and natural gas flowmeter (12) on the steam line between described liquefied natural gas bottle (8) and the natural gas flow control valve (13).
4. marine engine LNG/ diesel dual-fuel oil gas according to claim 1 and 2 joins automatically controlled accent supply system, it is characterized in that: be provided with diesel fuel filter (3) on the oil supply pipeline between described diesel fuel tank (1) and the high pressure oil pump (5).
5. marine engine LNG/ diesel dual-fuel oil gas according to claim 3 joins automatically controlled accent supply system, it is characterized in that: the signal input part of ECU ECU (Electrical Control Unit) (17) is connected to engine rotational speed signal sensor (20) and throttle setting device (18), the cng signal output terminal control natural gas flow amount controller (16) of ECU ECU (Electrical Control Unit) (17) and gas discharge control final controlling element (14), diesel oil signal output part control electronic speed controller (7) and the electronic speed regulation final controlling element (6) of ECU ECU (Electrical Control Unit) (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220104091XU CN202732124U (en) | 2012-03-20 | 2012-03-20 | Liquefied natural gas (LNG)/diesel oil double-fuel oil-gas connecting electronic control supply system of marine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220104091XU CN202732124U (en) | 2012-03-20 | 2012-03-20 | Liquefied natural gas (LNG)/diesel oil double-fuel oil-gas connecting electronic control supply system of marine engine |
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| CN202732124U true CN202732124U (en) | 2013-02-13 |
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| CN201220104091XU Expired - Fee Related CN202732124U (en) | 2012-03-20 | 2012-03-20 | Liquefied natural gas (LNG)/diesel oil double-fuel oil-gas connecting electronic control supply system of marine engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615314A (en) * | 2013-11-04 | 2014-03-05 | 李钢 | Storage, controlling, monitoring, preventing, tracing, recycling and reusing system for fishery vessel adopting gas fuel |
| CN103899424A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Ship dual-fuel-engine speed control system and method |
| CN107023421A (en) * | 2017-06-02 | 2017-08-08 | 广西玉柴机器股份有限公司 | The gas supply system of LNG natural gas engines |
| CN111287864A (en) * | 2018-12-10 | 2020-06-16 | 陕西重型汽车有限公司 | Automobile-used LNG feed system |
| CN113137309A (en) * | 2021-05-14 | 2021-07-20 | 淄柴机器有限公司 | Oil gas dual-electric control dual-fuel engine control system |
-
2012
- 2012-03-20 CN CN201220104091XU patent/CN202732124U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615314A (en) * | 2013-11-04 | 2014-03-05 | 李钢 | Storage, controlling, monitoring, preventing, tracing, recycling and reusing system for fishery vessel adopting gas fuel |
| CN103615314B (en) * | 2013-11-04 | 2016-04-06 | 李钢 | Adopt the anti-spike recycling system of fishery vessel storage control prison of gas fuel |
| CN103899424A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Ship dual-fuel-engine speed control system and method |
| CN107023421A (en) * | 2017-06-02 | 2017-08-08 | 广西玉柴机器股份有限公司 | The gas supply system of LNG natural gas engines |
| CN111287864A (en) * | 2018-12-10 | 2020-06-16 | 陕西重型汽车有限公司 | Automobile-used LNG feed system |
| CN113137309A (en) * | 2021-05-14 | 2021-07-20 | 淄柴机器有限公司 | Oil gas dual-electric control dual-fuel engine control system |
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Legal Events
| Date | Code | Title | Description |
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| DD01 | Delivery of document by public notice |
Addressee: Wuhan Huihai Technology Co., Ltd. Document name: Notification to Make Rectification |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20170320 |