CN107061074A - The gas handling system of CNG natural gas engines - Google Patents
The gas handling system of CNG natural gas engines Download PDFInfo
- Publication number
- CN107061074A CN107061074A CN201710409499.5A CN201710409499A CN107061074A CN 107061074 A CN107061074 A CN 107061074A CN 201710409499 A CN201710409499 A CN 201710409499A CN 107061074 A CN107061074 A CN 107061074A
- Authority
- CN
- China
- Prior art keywords
- gas
- air
- natural gas
- cng
- high pressure
- 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
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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
- 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
- F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
-
- 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
- F02M21/04—Gas-air mixing apparatus
-
- 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
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10013—Means upstream of the air filter; Connection to the ambient air
-
- 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 CNG natural gas engines, including air supply subsystem, CNG 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；CNG natural gases supply subsystem includes CNG gas tanks, high pressure filter, high pressure relief device, low pressure cleaner, low-pressure fuel stop valve and the automatically controlled gas rail assembly being sequentially connected, compressed natural gas is accurately controlled by filtering, decompression into automatically controlled gas rail assembly, blender is used for flowing through supplying inlet manifold after the natural gas mixing of the air of electronic throttle and outflow outlet rail, and the inlet valve of inlet manifold and cylinder is connected.The gas handling system can realize accurate to natural gas and air, safety control, meet the air inlet requirement of CNG natural gas engines.
Description
Technical field
The present invention relates to gas engine field, more particularly to a kind of gas handling system of CNG 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 CNG natural gas engines, can accurately, the control of safety
The air inflow of natural gas and air, meets the air inlet requirement of CNG natural gas engines.
To achieve the above object, the invention provides a kind of gas handling system of CNG 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；CNG natural gases supply subsystem, and it includes：CNG gas tanks, it is used for the compressed natural gas for storing high pressure；It is high
Cleaner is pressed, it is connected with CNG gas tanks, high pressure filter is used for filtering the compressed natural gas for flowing out CNG gas tanks；High pressure
Pressure reducer, it is connected by high-pressure solenoid valve with high pressure filter, and high pressure relief device is used for will be after high pressure filter be filtered
Compressed natural gas pressure-reducing gas to required pressure limit；Low pressure cleaner, it is connected with high pressure relief device, and low pressure cleaner is used for
The compressor oil that filtered compressed natural gas is mixed into compression process；Low-pressure fuel stop valve, it is connected with low pressure cleaner, low
Pressurized fuel stop valve is used for switching on or off the natural gas supply of low pressure line in time；And automatically controlled gas rail assembly, it is included simultaneously
The air inlet rail and outlet rail set is arranged, nozzle corresponding with cylinder number, air inlet are provided between air inlet rail and outlet rail
One end of rail is connected with low-pressure fuel stop valve, and automatically controlled gas rail assembly sprays into the amount of natural gas of outlet rail by Jet control；With
And blender, it is used for supplying inlet manifold after the natural gas for the air and outflow outlet rail that will flow through electronic throttle is mixed,
The inlet valve of inlet manifold and cylinder is connected.
Compared with prior art, the present invention has the advantages that：It is natural by setting air to supply subsystem, CNG
Gas supplies subsystem and blender, air supply subsystem and CNG 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 CNG natural gas engines.
Brief description of the drawings
Fig. 1 is the principle schematic of the gas handling system of the CNG 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 CNG natural gas engines of the specific embodiment of the invention, including
Air supply subsystem, CNG 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.CNG natural gases supply subsystem includes CNG gas tanks 201, high pressure filter 202, high pressure relief device 203, low pressure cleaner
204th, low-pressure fuel stop valve 205, automatically controlled gas rail assembly 206, wherein CNG gas tanks 201 are used for storing the compressed natural gas of high pressure,
High pressure filter 202 is connected with CNG gas tanks 201, and high pressure filter 202 is used for entering the compressed natural gas for flowing out CNG gas tanks 201
Row filtering, high pressure relief device 203 is connected by high-pressure solenoid valve with high pressure filter 202, and high pressure relief device 203 is used for passing through
High pressure filter 202 filter after compressed natural gas pressure-reducing gas to required pressure limit, low pressure cleaner 204 and high pressure relief device
203 connections, low pressure cleaner 204 is used for the compressor oil that filtered compressed natural gas is mixed into compression process, and low-pressure fuel is cut
Disconnected valve 205 is connected with low pressure cleaner 204, and low-pressure fuel stop valve 205 is used for switching on or off the natural of low pressure line in time
Gas is supplied, and automatically controlled gas rail assembly 206 includes the air inlet rail and outlet rail that are set up in parallel, be provided between air inlet rail and outlet rail with
The corresponding nozzle of cylinder number, one end of air inlet rail is connected with low-pressure fuel stop valve, and automatically controlled gas rail assembly 206 passes through spray
Mouth control sprays into the amount of natural gas of outlet rail.In addition, blender 30 is used for the air and outflow that flow through electronic throttle 104
Inlet manifold is supplied after the natural gas mixing of gas rail, inlet manifold and the inlet valve of cylinder 40 are connected.
In such scheme, the compressed natural gas of high pressure comes out from CNG gas tanks 201, after the filtering of high pressure filter 202,
Enter high pressure relief device 203 through high-pressure solenoid valve, the folding of high-pressure solenoid valve is by ECU controls, and the effect of high pressure relief device 203 is
The compressed natural gas (operating pressure 30bar-200bar) of high pressure is adjusted pressure to 4bar-6bar by heating under reduced pressure.It is high
Pressure natural gas is in decompression process due to puffing, it is necessary to substantial amounts of heat be absorbed, to prevent pressure reducer from freezing, by engine
Coolant is drawn out to pressure reducer and combustion gas is heated.Natural gas after decompression finally enters automatically controlled gas rail assembly 206, automatically controlled
The effect of gas rail assembly 206 is that natural gas quantity delivered is accurately controlled according to engine operation condition.Natural gas is being mixed with air
It is sufficiently mixed, into engine cylinder, is burnt through spark ignitor in device 30, the time of ignition of spark plug is by ECU controls.
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, ECU roots is calculated
Natural gas quantity delivered is corrected in time according to the feedback signal of lambda sensor.
To sum up, the gas handling system of the CNG natural gas engines of the present embodiment, by set air supply subsystem, CNG days
Right gas supply subsystem and blender 30, air supply subsystem and CNG 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 CNG 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 CNG 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；
CNG natural gases supply subsystem, and it includes：
CNG gas tanks, it is used for the compressed natural gas for storing high pressure；
High pressure filter, it is connected with the CNG gas tanks, and the high pressure filter is used for the compression to flowing out the CNG gas tanks
Natural gas is filtered；
High pressure relief device, it is connected by high-pressure solenoid valve with the high pressure filter, and the high pressure relief device is used for passing through
Compressed natural gas pressure-reducing gas after high pressure filter filtering is to required pressure limit；
Low pressure cleaner, it is connected with the high pressure relief device, and the low pressure cleaner is used for filtered compressed natural gas in compression
During the compressor oil that is mixed into；
Low-pressure fuel stop valve, it is connected with the low pressure cleaner, and the low-pressure fuel stop valve is used for connecting or cutting in time
The natural gas supply of disconnected low pressure line；And
Automatically controlled gas rail assembly, it includes the air inlet rail being set up in parallel and outlet rail, set between the air inlet rail and the outlet rail
Nozzle corresponding with cylinder number is equipped with, one end of the air inlet rail is connected with the low-pressure fuel stop valve, the electricity
Control the amount of natural gas that gas rail assembly sprays into the outlet rail by the Jet control；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 |
|---|---|---|---|
| CN201710409499.5A CN107061074A (en) | 2017-06-02 | 2017-06-02 | The gas handling system of CNG natural gas engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409499.5A CN107061074A (en) | 2017-06-02 | 2017-06-02 | The gas handling system of CNG natural gas engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107061074A true CN107061074A (en) | 2017-08-18 |
Family
ID=59616388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710409499.5A Pending CN107061074A (en) | 2017-06-02 | 2017-06-02 | The gas handling system of CNG natural gas engines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107061074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806375A (en) * | 2017-10-25 | 2018-03-16 | 四川中车玉柴发动机股份有限公司 | A kind of gas engine pressure charging system and gas engine |
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| JPH06155354A (en) * | 1992-11-10 | 1994-06-03 | Murata Mach Ltd | Robot hand |
| JP2006266180A (en) * | 2005-03-24 | 2006-10-05 | Nissan Diesel Motor Co Ltd | Exhaust brake device for vehicle |
| CN103696863A (en) * | 2013-11-25 | 2014-04-02 | 东风南充汽车有限公司 | Improvement on emission level of natural gas vehicle engine |
| CN203560006U (en) * | 2013-11-15 | 2014-04-23 | 南京华润燃气有限公司 | CNG closed loop system for automobiles |
| CN103953465A (en) * | 2014-04-11 | 2014-07-30 | 东风商用车有限公司 | Natural gas engine gas rail assembly integrated with mixer |
| CN103953467A (en) * | 2014-05-07 | 2014-07-30 | 广西玉柴机器股份有限公司 | Integrated fuel gas spraying mixer |
| CN104295380A (en) * | 2014-08-15 | 2015-01-21 | 华南农业大学 | Control system for engine consuming CNG/gasoline |
| CN105089857A (en) * | 2015-07-22 | 2015-11-25 | 诸城福田汽车科技开发有限公司 | LNG-CNG dual fuel power gas supply system and natural gas automobile |
| CN105909396A (en) * | 2016-06-23 | 2016-08-31 | 襄阳美标朗源动力实业有限公司 | Energy-saving gas engine |
| CN105986934A (en) * | 2015-01-28 | 2016-10-05 | 江苏众鑫交通器材有限公司 | Vehicle cng system |
| CN206753771U (en) * | 2017-06-02 | 2017-12-15 | 广西玉柴机器股份有限公司 | The gas handling system of CNG natural gas engines |
-
2017
- 2017-06-02 CN CN201710409499.5A patent/CN107061074A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06155354A (en) * | 1992-11-10 | 1994-06-03 | Murata Mach Ltd | Robot hand |
| JP2006266180A (en) * | 2005-03-24 | 2006-10-05 | Nissan Diesel Motor Co Ltd | Exhaust brake device for vehicle |
| CN203560006U (en) * | 2013-11-15 | 2014-04-23 | 南京华润燃气有限公司 | CNG closed loop system for automobiles |
| CN103696863A (en) * | 2013-11-25 | 2014-04-02 | 东风南充汽车有限公司 | Improvement on emission level of natural gas vehicle engine |
| CN103953465A (en) * | 2014-04-11 | 2014-07-30 | 东风商用车有限公司 | Natural gas engine gas rail assembly integrated with mixer |
| CN103953467A (en) * | 2014-05-07 | 2014-07-30 | 广西玉柴机器股份有限公司 | Integrated fuel gas spraying mixer |
| CN104295380A (en) * | 2014-08-15 | 2015-01-21 | 华南农业大学 | Control system for engine consuming CNG/gasoline |
| CN105986934A (en) * | 2015-01-28 | 2016-10-05 | 江苏众鑫交通器材有限公司 | Vehicle cng system |
| CN105089857A (en) * | 2015-07-22 | 2015-11-25 | 诸城福田汽车科技开发有限公司 | LNG-CNG dual fuel power gas supply system and natural gas automobile |
| CN105909396A (en) * | 2016-06-23 | 2016-08-31 | 襄阳美标朗源动力实业有限公司 | Energy-saving gas engine |
| CN206753771U (en) * | 2017-06-02 | 2017-12-15 | 广西玉柴机器股份有限公司 | The gas handling system of CNG natural gas engines |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806375A (en) * | 2017-10-25 | 2018-03-16 | 四川中车玉柴发动机股份有限公司 | A kind of gas engine pressure charging system and gas engine |
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Application publication date: 20170818 |