CN202001108U - Double-fuel supply system for marine engine - Google Patents

Double-fuel supply system for marine engine Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
engine
natural gas
links
diesel
marine engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011200346355U
Other languages
Chinese (zh)
Inventor
李煜辉
潘志翔
李格升
董健
张新塘
游伏兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Technology WUT
Original Assignee
Wuhan University of Technology WUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN2011200346355U priority Critical patent/CN202001108U/en
Application granted granted Critical
Publication of CN202001108U publication Critical patent/CN202001108U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/30Use of alternative fuels, e.g. biofuels

Landscapes

  • Output Control And Ontrol Of Special Type Engine (AREA)

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

The marine engine dual fuel supply system
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).
CN2011200346355U 2011-01-31 2011-01-31 Double-fuel supply system for marine engine Expired - Fee Related CN202001108U (en)

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

Publications (1)

Publication Number Publication Date
CN202001108U true CN202001108U (en) 2011-10-05

Family

ID=44703852

Family Applications (1)

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

Country Status (1)

Country Link
CN (1) CN202001108U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Cited By (7)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN202001108U (en) Double-fuel supply system for marine engine
CN104121115B (en) Automatically controlled servo pressure-regulating formula natural gas engine auxiliary fuel supply-system and controlling method
US7913673B2 (en) Method and apparatus for controlling liquid fuel delivery during transition between modes in a multimode engine
EP1546532B1 (en) Methods and apparatus for operation of multiple fuel engines
CN104074634B (en) A kind of natural gas engine two-way gas supply system and method
CN201517453U (en) Gas supply system of engine using diesel oil and natural gas as fuel
CN203978644U (en) Automatically controlled servo pressure-regulating formula natural gas engine auxiliary fuel supply-system
US9334812B2 (en) Fuel supply control system for multi-fuel internal combustion engine
CN1740542A (en) Electronic fuel oil jetting controller and controlling method for double fuel engine
CN108443014B (en) A hybrid power generation system of oil electricity and hybrid unmanned aerial vehicle for among unmanned aerial vehicle
CN104302900A (en) Method and system for engine control
US20090076705A1 (en) Power modulated, dual fuel, small displacement engine control system
CN202732124U (en) Liquefied natural gas (LNG)/diesel oil double-fuel oil-gas connecting electronic control supply system of marine engine
CN102791991A (en) Fuel tank system for gasoline and flexible ethanol powered vehicles using on-demand direct ethanol injection octane boost
GB2448912A (en) Intake air control and gaseous fuel injector assembly for a dual fuel i.c. engine
CN202417722U (en) Marine diesel oil/natural gas mixed combustion system
CN103375286A (en) Adaptive gas fuel control system
US9765717B2 (en) Gaseous fuel conversion system for marine vessels, and related accessories
GB2539906A (en) Fuel injection system for internal combustion engines
US10598131B2 (en) Method and device for the open-loop or closed-loop control of the amount of a fuel mixture
CN205559086U (en) Dual -fuel engine system
JP2010133337A (en) Dual fuel diesel engine
CN2858975Y (en) Electric injection controller for dual-fuel engine
CN202611871U (en) Fuel feeding control system of multi-fuel multi-track engine
CN111379618B (en) Engine capable of adjusting fuel octane number and control method

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