CN202001108U - Double-fuel supply system for marine engine - Google Patents
Double-fuel supply system for marine engine Download PDFInfo
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- CN202001108U CN202001108U CN2011200346355U CN201120034635U CN202001108U CN 202001108 U CN202001108 U CN 202001108U CN 2011200346355 U CN2011200346355 U CN 2011200346355U CN 201120034635 U CN201120034635 U CN 201120034635U CN 202001108 U CN202001108 U CN 202001108U
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- marine engine
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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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Abstract
The utility model discloses a double-fuel supply system for a marine engine. The system comprises a natural gas fuel supply subsystem, a diesel fuel supply subsystem and a double-fuel injection control subsystem, wherein the natural gas fuel supply subsystem is used for supplying natural gas for the engine; the diesel fuel supply subsystem is used for supplying diesel fuel for the engine; and the amount of natural gas which enters a mixer and the amount of diesel fuel which enters an engine cylinder are accurately controlled through a control signal of an engine electrical control unit of the double-fuel injection control subsystem. With variation in working conditions of the engine, proportion of the diesel fuel to the gas fuel is flexibly adjusted, optimal performance of the double-fuel marine engine is achieved, smoke emission can be greatly reduced, and pollution to atmosphere is reduced.
Description
Technical field
The utility model relates to the engine fuel supply system, refers to a kind of marine engine dual fuel supply system that rock gas and two kinds of fuel of diesel oil are provided particularly.
Background technique
Rock gas is the gaseous fuel based on methane, and its molecular weight is less than normal, and the H/C value is up to about 4.Because rock gas is all gaseous state during with air mixing 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 compressed natural gas can reduce diesel engine significantly like this, reduce the pollution of diesel engine, can also improve the fuel structure of diesel engine simultaneously atmosphere environment.Therefore, diesel oil is mixed the motor that burns compressed natural gas and has been obtained using comparatively widely.
At present, diesel oil mix burn compressed natural gas relevant apparatus normally at 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 the fuel feed of diesel engine by gas pedal.And marine diesel engine is different with diesel engine for automobile, employing be variable-speed governor.Marine diesel engine is by the rotating speed of power control pull bar control diesel engine, and when motionless and load diesel engine of power control pull bar changes or fluctuates, variable-speed governor will increase and decrease the delivery volume of diesel oil automatically, make diesel engine speed keep stable.How diesel oil and rock gas delivery volume are accurately controlled, with the best oil gas of realizing the double 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 is exactly will provide a kind of can realize the best oil gas of the marine engine marine engine dual fuel supply system of full distance speed regulating function when.
For achieving the above object, the marine engine dual fuel supply system that the utility model is designed comprises that gas fuel is supplied with subtense angle, diesel fuel is supplied with subtense angle and dual fuel injection control subsystem, and its special way is:
Described gas fuel is supplied with subtense angle and is comprised natural gas bottle, the output terminal of natural gas bottle links to each other by the input end of steam line with the natural gas flow adjustable valve, the flow control end of natural gas flow adjustable valve is regulated final controlling element with gas discharge and is linked to each other, the output terminal of natural gas flow adjustable 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 rack displacement final controlling element, the high pressure oil delivery side of pump links to each other with the nozzle of marine engine, thus with diesel injection to the cylinder of marine engine.
Described dual fuel injection control subsystem comprises engine electric-controlled unit (ECU), the tach signal input end of engine electric-controlled unit links to each other with engine rotation speed sensor, the throttle signal input end of engine electric-controlled unit links to each other with throttle position switch, the cng signal output terminal of engine electric-controlled unit is regulated final controlling element by gas discharge adjusting color controls and gas discharge and is linked to each other, and the diesel oil signal output part of engine electric-controlled unit links to each other with the rack displacement final controlling element by the rack displacement controller.
Further, described gas discharge is regulated the step motor drive mechanism of final controlling element and the control of rack displacement final controlling element employing electronic signal.
Further, the steam line between described natural gas bottle and the natural gas flow adjustable valve is provided with natural gas filter, rock gas decompressor and natural gas flowmeter, and the rock gas that enters mixer is carried out cleaning and pressure, flow control.Oil supply pipeline between described diesel fuel tank and the high pressure oil pump is provided with diesel fuel filter, and diesel oil is carried out cleaning.
Advantage of the present utility model is: rock gas is supplied with subtense angle and is supplied with rock gas to motor in the marine engine dual fuel supply system, the fuel delivery subtense angle is supplied with diesel oil to motor, the engine electric-controlled unit control signal of dual fuel injection control subsystem is accurately controlled 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 oil-gas ratio, reach the optimum performance of double fuel marine engine, can reduce the diesel engine carbon black discharging significantly, reduce pollution atmosphere.
Description of drawings
Fig. 1 is a kind of structural principle schematic representation of marine engine dual fuel supply system.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Marine engine dual fuel supply system shown in the figure comprises that gas fuel is supplied with subtense angle, diesel fuel is supplied with subtense angle and dual fuel injection control subsystem.Gas fuel is supplied with subtense angle and is comprised natural gas bottle 8, the output terminal of natural gas bottle 8 links to each other by the input end of steam line with natural gas flow adjustable valve 13, the flow control end of natural gas flow adjustable valve 13 is regulated final controlling element 14 with gas discharge and is linked to each other, the output terminal of natural gas flow adjustable 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 is regulated final controlling element 14 for adopting the step motor drive mechanism of electronic signal control.Steam line between natural gas bottle 8 and the natural gas flow adjustable valve 13 is provided with rock gas stop valve 9, natural gas filter 10, rock gas decompressor 11 and natural gas flowmeter 12.
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 rack displacement final controlling element 6, the output terminal of high pressure oil pump 5 links to each other with the nozzle of marine engine 4, thus with diesel injection to the cylinder of marine engine 4.Rack displacement final controlling element 6 also adopts the step motor drive mechanism of electronic signal control.Oil supply pipeline between diesel fuel tank 1 and the high pressure oil pump 5 is provided with diesel oil stop valve 2 and diesel fuel filter 3.
The dual fuel injection control subsystem comprises the engine electric-controlled unit 17 that links to each other with storage battery 19, the tach signal input end of engine electric-controlled unit 17 links to each other with engine rotation speed sensor 20, the throttle signal input end of engine electric-controlled unit 17 links to each other with throttle position switch 18, the cng signal output terminal of engine electric-controlled unit 17 is regulated final controlling element 14 by gas discharge adjusting color controls 16 and gas discharge and is linked to each other, and the diesel oil signal output part of engine electric-controlled unit 17 links to each other with rack displacement final controlling element 6 by rack displacement controller 7.
The double fuel of the utility model marine engine dual fuel supply system is supplied with and is achieved in that rock gas relies on gas storage pressure to come out from natural gas bottle 8, flow into rock gas decompressor 11 through natural gas filter 10 elimination impurity, the decompression back is by natural gas flowmeter 12, pass through the accurate control of natural gas flow adjustable valve 13 again, enter the air mixer 15 that links to each other with motor 4 intake manifolds at last, use for motor with formation inflammable mixture after the air mixing.Natural gas flow adjustable valve 13 regulates final controlling element 14 by the gas discharge that receives engine electric-controlled unit 17 control signals and gas discharge is regulated driver 16 drivings.
Simultaneously, rack displacement final controlling element 6 on the high pressure oil pump 5 is driven by the rack displacement driver 7 that receives engine electric-controlled unit 17 control signals, directly control pump rack, the diesel oil amount that enters cylinder is accurately controlled, thereby realize along with engine operating condition changes, to the soft readjustment of oil gas fuel ratio, reach the optimum performance of double fuel marine engine.
Claims (5)
1. a marine engine dual fuel supply system comprises that gas fuel is supplied with subtense angle, diesel fuel is supplied with subtense angle and dual fuel injection control subsystem, it is characterized in that:
Described gas fuel is supplied with subtense angle and is comprised natural gas bottle (8), the output terminal of natural gas bottle (8) links to each other by the input end of steam line with natural gas flow adjustable valve (13), the flow control end of natural gas flow adjustable valve (13) is regulated final controlling element (14) with gas discharge and is linked to each other, the output terminal of natural gas flow adjustable 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 rack displacement final controlling element (6), the output terminal of high pressure oil pump (5) links to each other with the nozzle of marine engine (4), thus with diesel injection to the cylinder of marine engine (4);
Described dual fuel injection control subsystem comprises engine electric-controlled unit (17), the tach signal input end of engine electric-controlled unit (17) links to each other with engine rotation speed sensor (20), the throttle signal input end of engine electric-controlled unit (17) links to each other with throttle position switch (18), the cng signal output terminal of engine electric-controlled unit (17) is regulated final controlling element (14) by gas discharge adjusting color controls (16) and gas discharge and is linked to each other, and the diesel oil signal output part of engine electric-controlled unit (17) links to each other with rack displacement final controlling element (6) by rack displacement controller (7);
2. marine engine dual fuel supply system according to claim 1 is characterized in that: described gas discharge is regulated the step motor drive mechanism of final controlling element (14) and the control of rack displacement final controlling element (6) employing electronic signal.
3. marine engine dual fuel supply system according to claim 1 and 2 is characterized in that: the steam line between described natural gas bottle (8) and the natural gas flow adjustable valve (13) is provided with natural gas filter (10), rock gas decompressor (11) and natural gas flowmeter (12).
4. marine engine dual fuel supply system according to claim 1 and 2 is characterized in that: the oil supply pipeline between described diesel fuel tank (1) and the high pressure oil pump (5) is provided with diesel fuel filter (3).
5. marine engine dual fuel supply system according to claim 3 is characterized in that: the oil supply pipeline between described diesel fuel tank (1) and the high pressure oil pump (5) is provided with diesel fuel filter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200346355U CN202001108U (en) | 2011-01-31 | 2011-01-31 | Double-fuel supply system for marine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200346355U CN202001108U (en) | 2011-01-31 | 2011-01-31 | Double-fuel supply system for marine engine |
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| Publication Number | Publication Date |
|---|---|
| CN202001108U true CN202001108U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200346355U Expired - Fee Related CN202001108U (en) | 2011-01-31 | 2011-01-31 | Double-fuel supply system for marine engine |
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| CN (1) | CN202001108U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899424A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Ship dual-fuel-engine speed control system and method |
| CN103899423A (en) * | 2014-03-05 | 2014-07-02 | 哈尔滨工程大学 | Fuel injection device of duel-fuel ship engine |
| CN104100389A (en) * | 2014-07-03 | 2014-10-15 | 李钢 | Fuel transmission-distribution sealing module safe conveying system of dual fuel power fishing vessel |
| CN104500277A (en) * | 2014-12-01 | 2015-04-08 | 中海石油气电集团有限责任公司 | LNG/diesel dual-fuel mixer for marine engine |
| CN105971719A (en) * | 2012-04-11 | 2016-09-28 | 三菱重工业株式会社 | Two-cycle gas engine and fuel gas injecting system for two-cycle gas engine |
| JP7403375B2 (en) | 2020-04-10 | 2023-12-22 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | gas fuel supply device |
-
2011
- 2011-01-31 CN CN2011200346355U patent/CN202001108U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971719A (en) * | 2012-04-11 | 2016-09-28 | 三菱重工业株式会社 | Two-cycle gas engine and fuel gas injecting system for two-cycle gas engine |
| CN105971719B (en) * | 2012-04-11 | 2018-11-30 | 三菱重工业株式会社 | The fuel gas spraying system of two-stroke gas engine and the engine |
| CN103899423A (en) * | 2014-03-05 | 2014-07-02 | 哈尔滨工程大学 | Fuel injection device of duel-fuel ship engine |
| CN103899424A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Ship dual-fuel-engine speed control system and method |
| CN104100389A (en) * | 2014-07-03 | 2014-10-15 | 李钢 | Fuel transmission-distribution sealing module safe conveying system of dual fuel power fishing vessel |
| CN104500277A (en) * | 2014-12-01 | 2015-04-08 | 中海石油气电集团有限责任公司 | LNG/diesel dual-fuel mixer for marine engine |
| JP7403375B2 (en) | 2020-04-10 | 2023-12-22 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | gas fuel supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140131 |