CN106979103A - The gas handling system of LNG natural gas engines - Google Patents
The gas handling system of LNG natural gas engines Download PDFInfo
- Publication number
- CN106979103A CN106979103A CN201710408388.2A CN201710408388A CN106979103A CN 106979103 A CN106979103 A CN 106979103A CN 201710408388 A CN201710408388 A CN 201710408388A CN 106979103 A CN106979103 A CN 106979103A
- Authority
- CN
- China
- Prior art keywords
- air
- gas
- lng
- rail
- natural gas
- 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.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000007789 gas Substances 0.000 title claims abstract description 43
- 239000003345 natural gas Substances 0.000 title claims abstract description 39
- 239000003949 liquefied natural gas Substances 0.000 claims abstract description 30
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000006200 vaporizer Substances 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract 2
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/32—Controlling fuel injection of the low pressure type
- F02D41/36—Controlling fuel injection of the low pressure type with means for controlling distribution
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a kind of gas handling system of LNG natural gas engines, including air supply subsystem, LNG natural gases supply subsystem and blender, air supply subsystem includes air cleaner, exhaust-driven turbo-charger exhaust-gas turbo charger, charge air cooler and the electronic throttle being sequentially connected, and electronic throttle is used for controlling the quantity delivered of the air after cooling；LNG natural gases supply subsystem includes LNG gas cylinders, vaporizer, voltage-stablizer, surge tank, low pressure cleaner, low-pressure fuel stop valve and the automatically controlled gas rail assembly being sequentially connected, liquified natural gas is accurately controlled after overflash, voltage stabilizing, buffering and filtering into automatically controlled gas rail assembly, blender is used for after mixing the air for flowing through electronic throttle and the natural gas for flowing out automatically controlled gas rail assembly supplying inlet manifold, the inlet valve connection of inlet manifold and cylinder.The gas handling system can realize accurate to natural gas and air, safety control, meet the air inlet requirement of LNG natural gas engines.
Description
Technical field
The present invention relates to gas engine field, more particularly to a kind of gas handling system of LNG natural gas engines.
Background technology
At present, the form of compressed natural gas and liquefied natural gas on the engine using when, with changing to Structure of Internal-Combustion Engine
Dynamic small, working index changes the advantage such as little, has become a kind of important alternative fuel and has been obtained extensively in field of internal combustion engine
Using.Gas engine is special exploitation to meet the spark-ignition engine of gas fuel combustion.Its operation principle and gasoline engine
It is similar, but have certain difference.The main distinction is that fuel is different, has larger difference in terms of result in fuel feed system
Not.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without answering
When the prior art for being considered as recognizing or implying the information structure in any form well known to persons skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of gas handling system of LNG natural gas engines, can accurately, the control of safety
The air inflow of natural gas and air, meets the air inlet requirement of LNG natural gas engines.
To achieve the above object, the invention provides a kind of gas handling system of LNG natural gas engines, including：Air is supplied
To subsystem, air supply subsystem includes air cleaner, exhaust-driven turbo-charger exhaust-gas turbo charger, charge air cooler and the electronics being sequentially connected
Air throttle, air cleaner is used for providing the air of cleaning, and exhaust-driven turbo-charger exhaust-gas turbo charger is used for the cleaning by air cleaner
Air is pressurizeed, and charge air cooler is used for cooling down the clean air after pressurization, and electronic throttle is used for controlling after cooling
The quantity delivered of air；LNG natural gases supply subsystem, its LNG gas cylinders for including being sequentially connected, vaporizer, voltage-stablizer, buffering
Tank, low pressure cleaner, low-pressure fuel stop valve and automatically controlled gas rail assembly, automatically controlled gas rail assembly include the air inlet rail being set up in parallel
With outlet rail, nozzle corresponding with cylinder number, one end of air inlet rail and low pressure are provided between air inlet rail and outlet rail
Fuel cutoff valve is connected, and automatically controlled gas rail assembly sprays into the amount of natural gas of outlet rail by Jet control；And blender, it is used for
Inlet manifold, inlet manifold and engine are supplied after the natural gas of the air and outflow outlet rail that flow through electronic throttle is mixed
The inlet valve of cylinder is connected.
Compared with prior art, the present invention has the advantages that：It is natural by setting air to supply subsystem, LNG
Gas supplies subsystem and blender, air supply subsystem and LNG natural gases supply subsystem independent control, can accurately,
The control natural gas and the air inflow of air of safety, meet the air inlet requirement of LNG natural gas engines.
Brief description of the drawings
Fig. 1 is the principle schematic of the gas handling system of the LNG natural gas engines according to the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment to the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
As shown in figure 1, according to a kind of gas handling system of LNG natural gas engines of the specific embodiment of the invention, including
Air supply subsystem, LNG natural gases supply subsystem and blender 30, wherein air supply subsystem include connecting successively
Air cleaner 101, exhaust-driven turbo-charger exhaust-gas turbo charger 102, charge air cooler 103 and the electronic throttle 104 connect, air cleaner 101 is used
To provide the air of cleaning, exhaust-driven turbo-charger exhaust-gas turbo charger 102 is used for being pressurizeed by the clean air of air cleaner 101,
Charge air cooler 103 is used for cooling down the clean air after pressurization, and electronic throttle 104 is used for controlling the confession of the air after cooling
To amount.LNG natural gases supply subsystem includes LNG gas cylinders 201, vaporizer 202, voltage-stablizer 203, the surge tank being sequentially connected
207th, low pressure cleaner 204, low-pressure fuel stop valve 205 and automatically controlled gas rail assembly 206, wherein LNG gas cylinders 201 are used for storing
Liquified natural gas, liquified natural gas enters low pressure cleaner 204 after overflash, voltage stabilizing and buffering, and low pressure cleaner 204 is used for
The machine oil that filter liquid state natural gas is mixed into compression process, low-pressure fuel stop valve 205 is connected with low pressure cleaner 204, low
Pressurized fuel stop valve 205 is used for switching on or off the natural gas supply of low pressure line in time, and automatically controlled gas rail assembly 206 includes arranged side by side
The air inlet rail and outlet rail of setting, are provided with nozzle corresponding with cylinder number, air inlet rail between air inlet rail and outlet rail
One end be connected with low-pressure fuel stop valve, automatically controlled gas rail assembly 206 pass through Jet control spray into outlet rail amount of natural gas.Separately
Outside, blender 30 is used for supplying air inlet discrimination after the natural gas for the air and outflow outlet rail that will flow through electronic throttle 104 is mixed
Pipe, inlet manifold and the inlet valve of cylinder 40 are connected.
In such scheme, liquified natural gas comes out from LNG gas cylinders 201, is vaporized by vaporizer, and liquefied natural gas is in vaporization
During due to volumetric expansion, it is necessary to absorb substantial amounts of heat, to prevent carburettor icing, engine coolant need to be drawn out to
Vaporizer is heated to combustion gas.Natural gas after vaporization enters automatically controlled gas rail assembly 206 through low-pressure fuel stop valve 205,
The effect of automatically controlled gas rail assembly 206 is that natural gas quantity delivered is accurately controlled according to engine operation condition.Natural gas exists with air
It is sufficiently mixed, into engine cylinder, is burnt through spark ignitor in blender 30, the time of ignition of spark plug is by ECU
Control.In addition, in this programme, the oxygen concentration of the tail gas after the burning of lambda sensor immediately monitoring can be set, air-fuel ratio is calculated,
ECU corrects natural gas quantity delivered in time according to the feedback signal of lambda sensor.
To sum up, the gas handling system of the LNG natural gas engines of the present embodiment, by set air supply subsystem, LNG days
Right gas supply subsystem and blender 30, air supply subsystem and LNG natural gases supply subsystem independent control, Ke Yijing
Really, the air inflow of safe control natural gas and air, meets the air inlet requirement of LNG natural gas engines.
It is foregoing to the present invention specific illustrative embodiment description be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles and its reality of the present invention should
With so that those skilled in the art can realize and using the present invention a variety of exemplaries and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (1)
1. a kind of gas handling system of LNG natural gas engines, it is characterised in that including：
Air supply subsystem, the air supply subsystem include be sequentially connected air cleaner, exhaust-driven turbo-charger exhaust-gas turbo charger, in
Cooler and electronic throttle, the air cleaner are used for providing the air of cleaning, and the exhaust-driven turbo-charger exhaust-gas turbo charger is used for warp
The clean air for crossing the air cleaner is pressurizeed, and the charge air cooler is used for cooling down the clean air after pressurization,
The electronic throttle is used for controlling the quantity delivered of the air after cooling；
LNG natural gases supply subsystem, its LNG gas cylinders for including being sequentially connected, vaporizer, voltage-stablizer, surge tank, low pressure filtering
Device, low-pressure fuel stop valve and automatically controlled gas rail assembly, the automatically controlled gas rail assembly include the air inlet rail and outlet being set up in parallel
Rail, is provided with nozzle corresponding with cylinder number, one end of the air inlet rail between the air inlet rail and the outlet rail
It is connected with the low-pressure fuel stop valve, the automatically controlled gas rail assembly sprays into the natural of the outlet rail by the Jet control
Tolerance；And
Blender, it is used for supplying after mixing the air for flowing through the electronic throttle and the natural gas for flowing out the outlet rail
The inlet valve of inlet manifold, the inlet manifold and cylinder is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408388.2A CN106979103A (en) | 2017-06-02 | 2017-06-02 | The gas handling system of LNG natural gas engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408388.2A CN106979103A (en) | 2017-06-02 | 2017-06-02 | The gas handling system of LNG natural gas engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106979103A true CN106979103A (en) | 2017-07-25 |
Family
ID=59343491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710408388.2A Pending CN106979103A (en) | 2017-06-02 | 2017-06-02 | The gas handling system of LNG natural gas engines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106979103A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915266A (en) * | 2019-04-26 | 2019-06-21 | 上海海事大学 | A marine dual-fuel engine combustion system and method |
| CN110318912A (en) * | 2019-07-02 | 2019-10-11 | 哈尔滨工程大学 | A kind of making-up air device and supplementing method for air improving natural gas engine dynamic response |
| CN113124315A (en) * | 2021-04-30 | 2021-07-16 | 常州易控汽车电子股份有限公司 | LNG pressure boost control system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074976A (en) * | 1992-09-14 | 1993-08-04 | 新疆石油管理局塔西南勘探开发公司 | Transforming diesel engine is the method for duel fuel engine |
| CN201318211Y (en) * | 2008-12-05 | 2009-09-30 | 福建泰德机械工业有限公司 | A device for converting a diesel generating set into a natural gas generating set |
| CN201991603U (en) * | 2011-01-25 | 2011-09-28 | 中科动力(福建)电气科技有限公司 | Device for converting diesel generating set into natural gas generating set |
| CN202402173U (en) * | 2011-12-31 | 2012-08-29 | 深圳市华江科技有限公司 | Injection valve |
| CN203584586U (en) * | 2013-09-30 | 2014-05-07 | 赵永胜 | Alcohols and natural gas of natural gas internal combustion engine and injection and control system for switching alcohols and natural gas |
| CN203702377U (en) * | 2014-03-04 | 2014-07-09 | 广西玉柴机器股份有限公司 | High-power LNG engine gas supply system |
| CN203978644U (en) * | 2014-07-23 | 2014-12-03 | 山东大学 | Automatically controlled servo pressure-regulating formula natural gas engine auxiliary fuel supply-system |
-
2017
- 2017-06-02 CN CN201710408388.2A patent/CN106979103A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074976A (en) * | 1992-09-14 | 1993-08-04 | 新疆石油管理局塔西南勘探开发公司 | Transforming diesel engine is the method for duel fuel engine |
| CN201318211Y (en) * | 2008-12-05 | 2009-09-30 | 福建泰德机械工业有限公司 | A device for converting a diesel generating set into a natural gas generating set |
| CN201991603U (en) * | 2011-01-25 | 2011-09-28 | 中科动力(福建)电气科技有限公司 | Device for converting diesel generating set into natural gas generating set |
| CN202402173U (en) * | 2011-12-31 | 2012-08-29 | 深圳市华江科技有限公司 | Injection valve |
| CN203584586U (en) * | 2013-09-30 | 2014-05-07 | 赵永胜 | Alcohols and natural gas of natural gas internal combustion engine and injection and control system for switching alcohols and natural gas |
| CN203702377U (en) * | 2014-03-04 | 2014-07-09 | 广西玉柴机器股份有限公司 | High-power LNG engine gas supply system |
| CN203978644U (en) * | 2014-07-23 | 2014-12-03 | 山东大学 | Automatically controlled servo pressure-regulating formula natural gas engine auxiliary fuel supply-system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915266A (en) * | 2019-04-26 | 2019-06-21 | 上海海事大学 | A marine dual-fuel engine combustion system and method |
| CN110318912A (en) * | 2019-07-02 | 2019-10-11 | 哈尔滨工程大学 | A kind of making-up air device and supplementing method for air improving natural gas engine dynamic response |
| CN113124315A (en) * | 2021-04-30 | 2021-07-16 | 常州易控汽车电子股份有限公司 | LNG pressure boost control system |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |
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| RJ01 | Rejection of invention patent application after publication |