CN202001141U - Natural gas/diesel dual-fuel engine modified from marine diesel engine - Google Patents
Natural gas/diesel dual-fuel engine modified from marine diesel engine Download PDFInfo
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- CN202001141U CN202001141U CN2010206943158U CN201020694315U CN202001141U CN 202001141 U CN202001141 U CN 202001141U CN 2010206943158 U CN2010206943158 U CN 2010206943158U CN 201020694315 U CN201020694315 U CN 201020694315U CN 202001141 U CN202001141 U CN 202001141U
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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 relates to a natural gas/diesel dual-fuel engine modified from a marine diesel engine, which belongs to the technical field of marine power. The natural gas/diesel dual-fuel engine modified from the marine diesel engine comprises a liquefied natural gas reservoir, a steam releasing valve, a fuel filter, a stop valve, a check valve, a gasifier, an automatic block valve, a manual regulating valve, a mixer, a regulating stem, a diesel regulating valve, a return spring, an eccentric wheel, a stepping motor, an electronic control element and a pushing arm. In natural gas/diesel dual-fuel engine modified from the marine diesel engine, through modifying the marine diesel engine into the dual-fuel engine, a diesel engine power driven vessel is modified into a dual-fuel motor vessel which not only is capable of burning natural gas but also is capable of burning fuel. The natural gas/diesel dual-fuel engine modified from the marine diesel engine not only is capable of burning the diesel but also is capable of burning a fuel mixture of oil and gas without changing the structure and the operation mode of the original engine or changing the gas valve time correcting and the ignition mode of the original engine, and the fuel mode selection is flexible; a provided technique is beneficial to environmental protection; and the fuel of the vessel is changed into dual fuels from the diesel, and thereby, the quality of the atmospheric environment, the water environment and the acoustic environment is greatly improved, and the living environments of riverside residents are improved.
Description
Technical field
The utility model relates to a kind of duel fuel engine, and particularly a kind of rock gas/diesel dual-fuel motor by the marine diesel engine repacking belongs to the ship power technical field.
Background technique
In recent years, rock gas is as a kind of clean energy resource, at international and the domestic extensive concern that all is subjected to.Along with the exploitation and the internal-combustion engine technology development of natural gas resource, the motor of natural gas fuel can have lower discharging than equal diesel engine, help solving serious day by day atmosphere polluting problem.In order to make full use of existing LNG Liquefied natural gas (LNG) resource, this clean energy resource of LNG is promoted the use of inland river and coastal ships that transport, make these boats and ships gradually adopt the energy as power with LNG.Substitute traditional diesel oil with clean fuel; be intended to reduce engine of boat and ship tail gas to the pollution of the pollution of air and greasy dirt to water body; protect inland river and coastal Amenities and water quality; the advantage of water transport resource can be accessed continue development healthily, help accelerating the upgrading of marine technology level.
In the prior art, application number is 92110533.9, name is called the patent of invention of " transforming diesel engine is the method for duel fuel engine ", be on existing diesel, to increase by a cover natural gas supply system, and increase crank angle synchro pick-up, ignition order according to diesel engine makes rock gas enter cylinder at regular time and quantity by supply system, need guarantee that also rock gas and air Mixture compress at the end in cylinder, the diesel engine original oil supply system is to a spot of diesel oil of in-cylinder injection, with the mixed gas that ignites.What this mechanism need regulate rock gas sprays into regularly the system architecture complexity.
The model utility content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of duel fuel engine, and it is a duel fuel engine by the repacking marine diesel engine, make the diesel powered ship both transform as can natural gas fuel also can combustion diesel fuel the dual-fuel power ship.
The technological scheme that the utility model adopted is as follows.
The utility model comprises: LNG Liquefied natural gas storage cylinder, steam release valve, fuel filter, stop valve, one-way valve, vaporizer, automatic block valve, manual modulation valve, mixer, adjustable lever, diesel oil modulating valve, restoring spring, eccentric wheel, stepper motor, electric control element, push arm.LNG Liquefied natural gas storage cylinder top exit releases valve by steam and is connected with the import of automatic block valve.Fuel filter is installed in the LNG Liquefied natural gas storage cylinder, the outlet of fuel filter is connected with the import of vaporizer by stop valve, one-way valve, the outlet of vaporizer is connected with the import of mixer by automatic block valve, manual modulation valve, and the outlet of mixer is connected with the diesel engine intake valve.The import of diesel oil modulating valve is connected with the diesel oil oil feed line, the outlet of diesel oil modulating valve is connected with diesel injector, one end of adjustable lever and diesel oil modulating valve mechanical connection, the other end is connected with a terminal tool of restoring spring and push arm respectively, the other end of restoring spring is fixed, the other end of push arm is connected with eccentric wheel, eccentric central shaft is connected with the output shaft of stepper motor, the signal input part of stepper motor and the signal output part of electric control element electrically connect, and the data capture end and the manual modulation valve of electric control element electrically connect.
When the LNG Liquefied natural gas storage cylinder after constantly absorbing external heat, have a small amount of LNG Liquefied natural gas and evaporate automatically.Gaseous natural gas can release valve from steam and flow out, and liquified natural gas all enters stop valve by fuel filter.Stop valve is closed when requiring to close the LNG Liquefied natural gas storage cylinder just now, otherwise is in opening state always.Liquified natural gas by one-way valve, flows into vaporizer by stop valve again.One-way valve guarantees not adverse current of rock gas, enters the LNG Liquefied natural gas storage cylinder in order to avoid reflux.Vaporizer makes liquified natural gas fully be gasificated into vaporized fuel, and the vaporized fuel that comes with releasing valve by steam junction, enters automatic block valve together.Automatically block valve can guarantee that the excessive rock gas of cut-out pressure enters diesel engine, in order to avoid damage body.
Rock gas enters manual modulation valve through automatic block valve, and the engineer operates this manual modulation valve according to the demand of load and speed, enters the gas discharge of diesel engine with control.Then, rock gas enters mixer, mixes in proportion with extraneous leaked-in air, becomes the gas fuel charge that duel fuel engine needs, and enters cylinder of diesel engine at last, participates in burning and externally acting.
The data capture end of electric control element is connected in manual modulation valve and experiences the aperture of manual modulation valve automatically, and after calculating through electric control element, electric control element output potential signal is with the action of control step motor.The step motor drive eccentric wheel rotates definite angle on request, with the eccentric azimythal angle of accurate adjusting, makes eccentric wheel accurately control the angle of stirring of push arm.Can the fiddle with adjustable lever of diesel oil modulating valve of push arm sprays into diesel injection amount in the cylinder of diesel engine with control, and restoring spring can make adjustable lever reset.When not having rock gas fully, this diesel oil delivery volume is identical with common diesel engine; Natural gas fuel is when reducing discharging as much as possible when needs, and diesel oil only produces the effect of lighting rock gas, and delivery volume is minimum; When the rock gas delivery volume has in limited time, the pro rate rock gas that can be as required and the delivery volume of diesel oil.This regulatory function is set in advance by electric control element fully, is in operation and regulates automatically according to operating mode.
The beneficial effects of the utility model: the marine diesel engine that the utility model is changed, do not change original machine mechanism and mode of operation, do not change the valve timing and the firing mode of former motor, just can realize the repacking of rock gas/diesel dual-fuel motor; The utility model both can burn diesel oil, also can the gentle fuel combination of oil firing, fuel mode is selected flexibly, select natural gas fuel to substitute part diesel oil in the abundant place of rock gas and improve emission performance, reduce oil consumption and save cost, and move not having also to return to former mode under the situation of source of the gas; Technology provided by the utility model helps environmental protection; marine fuel changes into from diesel oil and uses LNG, reduces by 85% noxious gas emission than independent use diesel oil, noise decline 20dB; improve atmosphere environment, water environment and sound environment quality greatly, improve resident's living environment along the river.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model.
Among the figure: 1. the LNG Liquefied natural gas storage cylinder, 2. steam releases valve, 3. fuel filter, 4. stop valve, 5. one-way valve, 6. vaporizer, 7. automatically block valve, 8. manual modulation valve, 9. mixer, 10. adjustable lever, 11. diesel oil modulating valve, 12. restoring springs, 13. eccentric wheels, 14. stepper motors, 15. electric control elements, 16. push arms.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present utility model is further described.
As shown in Figure 1, the utility model comprises: LNG Liquefied natural gas storage cylinder 1, steam release valve 2, fuel filter 3, stop valve 4, one-way valve 5, vaporizer 6, automatic block valve 7, manual modulation valve 8, mixer 9, adjustable lever 10, diesel oil modulating valve 11, restoring spring 12, eccentric wheel 13, stepper motor 14, electric control element 15, push arm 16.
LNG Liquefied natural gas storage cylinder 1 top exit releases valve 2 by steam and is connected with the import of automatic block valve 7.Fuel filter 3 is installed in the LNG Liquefied natural gas storage cylinder 1, the outlet of fuel filter 3 is connected with the import of vaporizer 6 by stop valve 4, one-way valve 5, the outlet of vaporizer 6 is connected with the import of mixer 9 by automatic block valve 7, manual modulation valve 8, and the outlet of mixer 9 is connected with the diesel engine intake valve.The import of diesel oil modulating valve 11 is connected with the diesel oil oil feed line, the outlet of diesel oil modulating valve 11 is connected with diesel injector, one end of adjustable lever 10 and diesel oil modulating valve 11 mechanical connections, the other end is connected with a terminal tool of restoring spring 12 and push arm 16 respectively, the other end of restoring spring 12 is fixed, the other end of push arm 16 is connected with eccentric wheel 13, the central shaft of eccentric wheel 13 is connected with the output shaft of stepper motor 14, the signal output part of the signal input part of stepper motor 14 and electric control element 15 electrically connects, and the data capture end and the manual modulation valve 8 of electric control element 15 electrically connect.
When LNG Liquefied natural gas storage cylinder 1 after constantly absorbing external heat, have a small amount of LNG Liquefied natural gas and evaporate automatically.Gaseous natural gas can release valve 2 from steam and flow out, and liquified natural gas all enters stop valve 4 by fuel filter 3.Stop valve 4 is closed when requiring to close LNG Liquefied natural gas storage cylinder 1 just now, otherwise is in opening state always.Liquified natural gas by one-way valve 5, flows into vaporizer 6 by stop valve 4 again.One-way valve 5 guarantees not adverse current of rock gas, enters LNG Liquefied natural gas storage cylinder 1 in order to avoid reflux.Vaporizer 6 makes liquified natural gas fully be gasificated into vaporized fuel, and the vaporized fuel that comes with released valve 4 by steam junction, enters automatic block valve 7 together.Automatically block valve 7 can guarantee that the excessive rock gas of cut-out pressure enters diesel engine, in order to avoid damage body.
Rock gas enters manual modulation valve 8 through automatic block valve 7, and the engineer operates this manual modulation valve 8 according to the demand of load and speed, enters the gas discharge of diesel engine with control.Then, rock gas enters mixer 9, mixes in proportion with extraneous leaked-in air, becomes the gas fuel charge that duel fuel engine needs, and enters cylinder of diesel engine at last, participates in burning and externally acting.
The data capture end of electric control element 15 is connected in manual modulation valve 8 and experiences the aperture of manual modulation valve 8 automatically, and after calculating through electric control element 15, electric control element 15 output potential signals are with the action of control step motor 14.Stepper motor 14 drives eccentric wheel 13 and rotates the angle of determining on request, with the azimythal angle of accurate adjusting eccentric wheel 13, makes eccentric wheel 13 accurately control the angle of stirring of push arm 16.Can the fiddle with adjustable lever 10 of diesel oil modulating valve 11 of push arm 16 sprays into diesel injection amount in the cylinder of diesel engine with control, and restoring spring 12 can make adjustable lever 10 reset.When not having rock gas fully, this diesel oil delivery volume is identical with common diesel engine; Natural gas fuel is when reducing discharging as much as possible when needs, and diesel oil only produces the effect of lighting rock gas, and delivery volume is minimum; When the rock gas delivery volume has in limited time, the pro rate rock gas that can be as required and the delivery volume of diesel oil.This regulatory function is set in advance by electric control element 15 fully, is in operation and regulates automatically according to operating mode.
Claims (1)
1. rock gas/diesel dual-fuel the motor of marine diesel engine repacking comprises: LNG Liquefied natural gas storage cylinder (1), steam release valve (2), fuel filter (3), stop valve (4), one-way valve (5), vaporizer (6), block valve (7), manual modulation valve (8), mixer (9), adjustable lever (10), diesel oil modulating valve (11), restoring spring (12), eccentric wheel (13), stepper motor (14), electric control element (15), push arm (16) automatically; It is characterized in that: LNG Liquefied natural gas storage cylinder (1) top exit releases valve (2) by steam and is connected with the import of automatic block valve (7); Fuel filter (3) is installed in the LNG Liquefied natural gas storage cylinder (1), the outlet of fuel filter (3) is connected with the import of vaporizer (6) by stop valve (4), one-way valve (5), the outlet of vaporizer (6) is connected with the import of mixer (9) by automatic block valve (7), manual modulation valve (8), and the outlet of mixer (9) is connected with the diesel engine intake valve; The import of diesel oil modulating valve (11) is connected with the diesel oil oil feed line, the outlet of diesel oil modulating valve (11) is connected with diesel injector, one end of adjustable lever (10) and diesel oil modulating valve (11) mechanical connection, the other end is connected with a terminal tool of restoring spring (12) and push arm (16) respectively, the other end of restoring spring (12) is fixed, the other end of push arm (16) is connected with eccentric wheel (13), the central shaft of eccentric wheel (13) is connected with the output shaft of stepper motor (14), the signal output part of the signal input part of stepper motor (14) and electric control element (15) electrically connects, and the data capture end of electric control element (15) and manual modulation valve (8) electrically connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206943158U CN202001141U (en) | 2010-12-30 | 2010-12-30 | Natural gas/diesel dual-fuel engine modified from marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206943158U CN202001141U (en) | 2010-12-30 | 2010-12-30 | Natural gas/diesel dual-fuel engine modified from marine diesel engine |
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| Publication Number | Publication Date |
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| CN202001141U true CN202001141U (en) | 2011-10-05 |
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| CN2010206943158U Expired - Fee Related CN202001141U (en) | 2010-12-30 | 2010-12-30 | Natural gas/diesel dual-fuel engine modified from marine diesel engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075260A (en) * | 2013-01-23 | 2013-05-01 | 任一虎 | Oil injection control system of dual-fuel engine and oil injection control method of dual-fuel engine |
| CN103407567A (en) * | 2013-07-30 | 2013-11-27 | 武汉理工大学 | Integrated power control device of liquefied natural gas power ship |
| CN103573452A (en) * | 2012-08-08 | 2014-02-12 | 卡特彼勒公司 | Dual fuel engine and evaporated natural gas system |
| CN103835813A (en) * | 2014-03-10 | 2014-06-04 | 大连理工大学 | Control method for composite fuel injection system |
| CN104963777A (en) * | 2015-07-13 | 2015-10-07 | 中船动力有限公司 | Engine gas valve group system and control method |
| CN105683039A (en) * | 2013-10-11 | 2016-06-15 | 三井造船株式会社 | Fuel gas supply system for liquid gas transportation vessel |
-
2010
- 2010-12-30 CN CN2010206943158U patent/CN202001141U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573452A (en) * | 2012-08-08 | 2014-02-12 | 卡特彼勒公司 | Dual fuel engine and evaporated natural gas system |
| CN103075260A (en) * | 2013-01-23 | 2013-05-01 | 任一虎 | Oil injection control system of dual-fuel engine and oil injection control method of dual-fuel engine |
| CN103407567A (en) * | 2013-07-30 | 2013-11-27 | 武汉理工大学 | Integrated power control device of liquefied natural gas power ship |
| CN103407567B (en) * | 2013-07-30 | 2016-03-30 | 武汉理工大学 | The integrated power control unit of liquefied natural gas (LNG) power ship |
| CN105683039A (en) * | 2013-10-11 | 2016-06-15 | 三井造船株式会社 | Fuel gas supply system for liquid gas transportation vessel |
| CN103835813A (en) * | 2014-03-10 | 2014-06-04 | 大连理工大学 | Control method for composite fuel injection system |
| CN104963777A (en) * | 2015-07-13 | 2015-10-07 | 中船动力有限公司 | Engine gas valve group system and control method |
| CN104963777B (en) * | 2015-07-13 | 2018-04-27 | 中船动力有限公司 | Engine gas valve set system and control method |
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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: 20111230 |