CN109931188A - A kind of internal-combustion engine system of compression-ignited double fuel - Google Patents
A kind of internal-combustion engine system of compression-ignited double fuel Download PDFInfo
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- CN109931188A CN109931188A CN201910119481.0A CN201910119481A CN109931188A CN 109931188 A CN109931188 A CN 109931188A CN 201910119481 A CN201910119481 A CN 201910119481A CN 109931188 A CN109931188 A CN 109931188A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 108
- 239000000446 fuel Substances 0.000 title claims abstract description 104
- 239000007789 gas Substances 0.000 claims abstract description 104
- 238000012545 processing Methods 0.000 claims abstract description 44
- 230000009977 dual effect Effects 0.000 claims abstract description 32
- 239000002737 fuel gas Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 238000012805 post-processing Methods 0.000 claims abstract description 12
- 239000002283 diesel fuel Substances 0.000 claims description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 239000002826 coolant Substances 0.000 claims description 10
- 239000002828 fuel tank Substances 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
- 239000003345 natural gas Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- -1 final cleaner Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
- Output Control And Ontrol Of Special Type Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention belongs to compression ignition engine technical fields, and in particular to a kind of internal-combustion engine system of compression-ignited double fuel.The internal-combustion engine system of the compression-ignited double fuel, including internal combustion engine assembly, the internal combustion engine assembly is connected with high-pressure diesel transport subsystem, compressed fuel gas transport subsystem, pressure release gas collection processing subsystem, double fuel high-pressure injection subsystem and post-processing subsystem, double fuel high-pressure injection subsystem includes that dual fuel injector and combustion chamber are constituted, post-processing subsystem includes EGR module, SCR module and DPF module, high-pressure diesel transport subsystem, compressed fuel gas transport subsystem, pressure release gas collection processing subsystem, double fuel high-pressure injection subsystem and post-processing subsystem pass through ECU and are controlled.The beneficial effect is that: processing application can be collected to the gaseous fuel of low-pressure channel, avoided directly arranging into atmosphere, polluted and endanger with other, improve the utilization rate of gaseous fuel.
Description
Technical field
The invention belongs to compression ignition engine technical fields, and in particular to a kind of internal-combustion engine system of compression-ignited double fuel.
Background technique
Currently marketed medium-weight vehicle mainly uses diesel oil as fuel, this kind of burning efficiency of internal combustion engine is substantially low
High pressure direct injection natural gas in cylinder technology (i.e. high-pressure common rail in 39%, with the publication of six discharge standard of state, using diesel oil as single-fuel
System) matching cost and technical difficulty gradually increase, while the growth in cost is also brought, with the tune of national energy structure
It is whole, and the promotion to emission request, it is traditional to be gradually decreased using gasoline and diesel oil as the internal combustion engine of combustion medium.Natural gas
It is abundant in china natural resources, gradually start to be applied to automobile market as the alternative fuel of diesel oil.The natural big portion of gas internal combustion engine at present
It is divided into gas-duct jetting, is lighted by spark plug, efficiency of combustion is lower than 39%, and discharges to be difficult to meet and gradually be promoted
Emission request.
It is current in the market, there are no mature, the in-cylinder direct-jet bifuel system internal combustion engine of mass production, big portions
Product is divided still to be in sample and verification experimental verification stage.In the internal combustion engine product of in-cylinder direct-jet bifuel system currently on the market
In, there are compressed natural gas pressure oscillation is big, structure is complicated for key components and parts, and processing cost is high, can not mass production the problem of.And
Current bifuel system internal combustion engine exists when adjusting the pressure of compressed fuel gas, directly fires the gas of pressure release passage
Material arranges the problem of Xiang great Qi or surrounding enviroment.It at present in the world, can only be direct there are no the effective ways of processing pressure release gas
It is discharged into air.Discharges gas fuel will cause air pollution into air, if largely gathered in a small range flammable
Gas, it is also possible to the burning of gas, or even explosion are caused, harmfulness is very big, also deviate from bifuel system cleaning, energy conservation, ring
The objective of guarantor.
In conclusion need to develop a kind of completely new, perfect internal combustion engine in-cylinder direct-jet bifuel system, meet market and
The demand of social development.
Summary of the invention
In order to compensate for the shortcomings of the prior art, the present invention provides a kind of internal-combustion engine systems of compression-ignited double fuel.
The present invention is achieved through the following technical solutions:
A kind of internal-combustion engine system of compression-ignited double fuel, including internal combustion engine assembly, the internal combustion engine assembly are connected with high-pressure diesel
Transport subsystem, compressed fuel gas transport subsystem, pressure release gas collection processing subsystem, double fuel high-pressure injection subsystem
With post-processing subsystem, double fuel high-pressure injection subsystem includes that dual fuel injector and combustion chamber are constituted, and post-processes subsystem
Including EGR module, SCR module and DPF module, high-pressure diesel transport subsystem, compressed fuel gas transport subsystem, pressure release gas
Body collects processing subsystem, double fuel high-pressure injection subsystem and post-processing subsystem and passes through ECU and controlled.
Further, the compressed fuel gas transport subsystem includes liquified-gas storing pot, cryogenic pump, gasifier, pressure
Power buffer, the first filter, the gentle rail of pressure-regulating valve system, liquified-gas storing pot are conveyed by cryogenic pump and gasifier
To pressure buffer, gasifier passes through the engine coolant entrance and engine cool of connecting line Yu internal combustion engine assembly respectively
Liquid outlet, pressure buffer are delivered to pressure-regulating valve system through the first filter, and after the filtering of the first filter,
It is delivered to gas rail, gas rail is connect by connecting pipe with the dual fuel injector of internal combustion engine assembly.
Further, the high-pressure diesel transport subsystem include fuel tank, final cleaner, oil transfer pump, high voltage common rail pump and
Diesel common rail, oil transfer pump filter the diesel oil in fuel tank by final cleaner, are delivered to high voltage common rail pump, high voltage common rail pump pair
After diesel oil is pressurizeed, it is delivered to diesel common rail, diesel common rail is connect by interface channel with dual fuel injector, in double fuel
Injector receives the instruction of ECU, and after internal needle valve structure is opened, high-pressure diesel in diesel common rail is sprayed by double fuel
The oil duct of emitter, is injected directly into the combustion chamber of internal combustion engine, so that ignition combustion chamber, drives gas fuel combustion acting.
Further, the pressure release gas collection processing subsystem includes pressure-regulating valve system, gas collection processing system
And enmgine exhaust, the compressed natural gas in gas rail are injected directly into the combustion of internal combustion engine by the air flue of dual fuel injector
It burns in room, and gas collection processing system is delivered to by the pressure release passage of pressure-regulating valve system.
Further, the gas collection processing system is connect with motor intake manifold by connecting pipe, gas collection
After the gas fuel pressure that processing system is collected reaches setting value, signal is passed to ECU by pressure sensor, and ECU is in internal combustion engine
Setting operating condition under, the switch valve of control gas collection processing system is opened, and low-pressure gas fuel can lead to by connecting pipe
Motor intake manifold is mixed with inlet air, and hence into combustion chamber, the burning enriching of setting ratio is carried out to setting operating condition,
Low-pressure gas fuel should repeatedly carry out, at gas collection the burning enriching of internal combustion engine setting operating condition in batches according to combustion case
When managing system pressure lower than setting value, switch valve is closed, and burning enriching stops.
Further, the ECU by monitoring crankshaft rotational speed sensor, camshaft phase sensor, accelerator pedal sensor,
Rail pressure sensor, water temperature sensor, boost-pressure sensor and the signal of intake air temperature sensor transmitting are to dual fuel injector
Command signal is sent, the open and close of needle valve structure and air valve structure in solenoid valve control dual fuel injector are passed through.
The beneficial effects of the present invention are: greatly reducing PM value and the NOx value in engine exhaust, compressed fuel gas
Transport subsystem is provided with pressure buffer, keeps the adjusting of compressed natural gas, control more quick and accurate;Pressure release gas is received
Collect processing subsystem, processing application can be collected to the gaseous fuel of low-pressure channel, avoids directly arranging into atmosphere, pollute
With other harm, the utilization rate of gaseous fuel is improved, has filled up the blank that low-pressure combustible gas recycles in the world;Make product
Be easier to batch productionization, greatly pushed the dual fuel injection system internal combustion engine of diesel oil gaseous fuel technological progress and mass into
Journey.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Attached drawing 1 is bi-fuel internal combustion engine system layout figure of the present invention;
Attached drawing 2 is bi-fuel internal combustion engine of the present invention burning operation schematic diagram.
In figure, 01 liquified-gas storing pot, 02 cryogenic pump, 03 gasifier, 04 pressure buffer, 05 first filter, 06
Pressure-regulating valve system, 07 gas collection processing system, 08 filter, 09 gas rail, 10 ECU, 11 diesel common rails, 12 EGR, 13
Enmgine exhaust, 14 high voltage common rail pumps, 15 oil transfer pumps, 16 final cleaners, 17 fuel tanks, 18 SCR, 19 DPF, 20 start
Machine cooling liquid outlet, 21 dual fuel injectors, 22 engine coolant entrances, 23 internal combustion engine assemblies, round engine inlet manifold,
25 connecting rods, 26 pistons, 27 combustion chambers, 28 exhaust valves, 29 inlet valves, 30 crankshaft rotational speed sensors, 31 camshaft phase sensors,
32 accelerator pedal sensors, 33 rail pressure sensors, 34 water temperature sensors, 35 boost-pressure sensors, 36 intake air temperature sensor.
Specific embodiment
A kind of internal-combustion engine system of compression-ignited double fuel of the present invention is further described below with reference to embodiment.
Attached drawing 1,2 is a kind of specific embodiment of the invention.A kind of internal-combustion engine system of compression-ignited double fuel of the invention, packet
Internal combustion engine assembly 23 is included, the internal combustion engine assembly 23 is connected with high-pressure diesel transport subsystem, compressed fuel gas conveying subsystem
System, pressure release gas collection processing subsystem, double fuel high-pressure injection subsystem and post-processing subsystem, double fuel high-pressure injection
System includes that dual fuel injector 21 and combustion chamber 27 are constituted, post-processing subsystem include 12 module of EGR, 18 module of SCR and
19 module of DPF, high-pressure diesel transport subsystem, compressed fuel gas transport subsystem, pressure release gas collection processing subsystem,
Double fuel high-pressure injection subsystem and post-processing subsystem pass through ECU 10 and are controlled.
Further, the compressed fuel gas transport subsystem includes liquified-gas storing pot 01, cryogenic pump 02, gasifier
03, pressure buffer 04, the first filter 05, the gentle rail 09 of pressure-regulating valve system 06, liquified-gas storing pot 01 pass through low
Temperature pump 02 and gasifier 03 are delivered to pressure buffer 04, and gasifier 03 passes through the hair of connecting line and internal combustion engine assembly 23 respectively
Motivation coolant inlet 22 is connected to engine coolant outlet 20, and pressure buffer 04 is delivered to pressure through the first filter 05
Regulating valve system 06, and after the filtering of the first filter 05, it is delivered to gas rail 09, gas rail 09 passes through connecting pipe and internal combustion engine
The dual fuel injector 21 of assembly 23 connects.
Further, the high-pressure diesel transport subsystem includes that fuel tank 17, final cleaner 16, oil transfer pump 15, high pressure are total
Rail pump 14 and diesel common rail 11, oil transfer pump 15 filter the diesel oil in fuel tank 17 by final cleaner 16, and it is total to be delivered to high pressure
Rail pump 14, after high voltage common rail pump 14 pressurizes to diesel oil, is delivered to diesel common rail 11, diesel common rail 11 by interface channel with
Dual fuel injector 21 connects, and receives the instruction of ECU 10 in dual fuel injector 21, after internal needle valve structure is opened, bavin
High-pressure diesel in oily common rail 11 is injected directly into the combustion chamber 27 of internal combustion engine by the oil duct of dual fuel injector 21, thus
Ignition combustion chamber 27 drives gas fuel combustion acting.
Further, the pressure release gas collection processing subsystem includes pressure-regulating valve system 06, gas collection processing system
System 07 and enmgine exhaust 13, the compressed natural gas in gas rail 09 are injected directly by the air flue of dual fuel injector 21
In the combustion chamber 27 of internal combustion engine, and gas collection processing system 07 is delivered to by the pressure release passage of pressure-regulating valve system 06.
Further, the gas collection processing system 07 is connect with motor intake manifold 24 by connecting pipe, gas
After the gas fuel pressure that collection processing system implementing 07 is collected reaches setting value, signal is passed to ECU 10, ECU by pressure sensor
10 under the setting operating condition of internal combustion engine, and the switch valve of control gas collection processing system 07 is opened, and low-pressure gas fuel can pass through
Connecting pipe is led to motor intake manifold 24 and is mixed with inlet air, hence into combustion chamber 27, sets to setting operating condition
The burning enriching of certainty ratio, low-pressure gas fuel, should be in batches more according to combustion case to the burning enriching of internal combustion engine setting operating condition
Secondary progress, when 07 pressure of gas collection processing system is lower than setting value, switch valve is closed, and burning enriching stops.
Further, the ECU 10 passes through monitoring crankshaft rotational speed sensor 30, camshaft phase sensor 31, gas pedal
The letter that sensor 32, rail pressure sensor 33, water temperature sensor 34, boost-pressure sensor 35 and intake air temperature sensor 36 are transmitted
Number to dual fuel injector 21 send command signal, pass through needle valve structure in solenoid valve control dual fuel injector 21 and air valve knot
The open and close of structure.
A kind of internal-combustion engine system of compression-ignited double fuel of the invention, liquified-gas storing pot 01, cryogenic pump 02, gasifier
03, pressure buffer 04, the first filter 05, pressure-regulating valve system 06, gas rail 09 and connecting pipe, constitute compressed gas
Fuel delivery subsystem;Liquefied gas can be liquefied natural gas, the fuel gas liquefaction such as liquefied petroleum gas, pressure adjusting
Valve system 06, gas collection processing system 07, enmgine exhaust 13 and connecting pipe constitute the processing of pressure release gas collection
Subsystem, fuel tank 17, filter 16, oil transfer pump 15, high voltage common rail pump 14, diesel common rail 11 and connecting pipe, constitutes high pressure
Diesel oil transport subsystem, dual fuel injector 21, combustion chamber 27 and connecting pipe constitute double fuel high-pressure injection subsystem,
The PM value of engine exhaust and NOx value is set to have obtained significantly improving, but with the promulgation for the emission regulation being increasingly stringenter,
Internal combustion engine post-processing subsystem can according to need selection 12 module of EGR, 18 module of SCR, 19 module of DPF and place after other
Module is managed, to meet to the greatest extent the requirement of emission limit, to make vehicle that can carry enough combustions in use
Material, gaseous fuel are added in liquid form, are carried, and gaseous fuel is stored in liquified-gas storing pot 01 with liquefied form,
When internal combustion engine, cryogenic pump 02 pumps out liquid gas fuel from liquified-gas storing pot 01, is delivered to gasifier 03.?
When internal combustion engine just starts, the heating device of gasifier 03 gasifies liquid gas fuel, and is delivered to pressure buffer 04, starts
Machine coolant inlet 22 and engine coolant outlet 20 are connected by pipeline with gasifier 03 respectively, after internal combustion engine operation,
Engine coolant has reached the temperature of setting, and ECU 10 controls the heater stop work of gasifier 03, subsequently through hair
The temperature of motivation coolant liquid is by gasifying liquefied gas.
The present invention relates to bi-fuel internal combustion engine in, be provided with pressure buffer 04, from gasifier 03 export gas
Pressure oscillation is larger, and pressure buffer 04 can weaken gas pressure fluctuation, and pressure sensor, pressure are equipped in pressure buffer 04
Pressure signal transmission is significantly fluctuated situation, or and target value deviation according to pressure to ECU 10, ECU 10 by force snesor
Situation controls to adjust the liquid gas fuel pump output of cryogenic pump 02, thus the pressure of rough adjusting control compressed fuel gas
Power is stablized in a certain range.Compressed gas in pressure buffer 04 is delivered to pressure-regulating valve through cleaner 05
System 06.
The present invention relates to bi-fuel internal combustion engine in, be provided with pressure-regulating valve system 06, pressure-regulating valve system 06
In, one-way valve structures are provided with, switch valve structure, pressure-relief valve structure, piston structure etc., pressure-regulating valve system 06 passes through diesel oil
Pressure accurately to control the pressure of compressed gas, and pressure adjusts accurate and quick compressed fuel gas after accurate adjusting, passes through
After filter 08 filters, it is delivered to gas rail 09, gas rail 09 is connect, in double fuel by connecting pipe with dual fuel injector 21
Injector 21 is connected to the instruction of ECU 10, and after internal air valve structure is opened, compressed natural gas in gas rail 09 passes through double combustions
The air flue of material ejector 21 is injected directly into the combustion chamber 27 of internal combustion engine, thus work by combustion.It is pressed in pressure-regulating valve system 06
When fluctuation is larger or engine shutdown, to avoid system pressure excessive or system is chronically at high pressure conditions, pressure is adjusted
The pressure release passage of valve system 06 can be opened, and the low-pressure gas fuel of pressure release passage is delivered to gas collection processing system 07, internal combustion
When machine is shut down, the compressing inflammable gas in gas rail 09 and filter 08 can also be delivered to gas collection processing system 07.
The present invention relates to bi-fuel internal combustion engine in, be provided with gas collection processing system 07.Gas collection processing system
System 07 in, be provided with one-way valve structures, switch valve structure, pressure sensor etc., gas collection processing system 07 and engine into
Gas manifold 24 is connected by connecting pipe.After the gas fuel pressure that gas collection processing system 07 is collected reaches setting value, pressure
Signal is passed to ECU 10 by force snesor, and ECU 10 controls gas collection processing system 07 under the setting operating condition of internal combustion engine
Switch valve open, low-pressure gas fuel can lead to motor intake manifold 24 by connecting pipe, mixed with inlet air, from
And enter combustion chamber 27, the burning enriching of setting ratio is carried out to setting operating condition.Low-pressure gas fuel sets operating condition to internal combustion engine
Burning enriching, should repeatedly be carried out in batches according to combustion case, 07 pressure of gas collection processing system be lower than setting value when, switch
Valve is closed, and burning enriching stops.
The present invention relates to bi-fuel internal combustion engine in, the oil transfer pump 15 in high-pressure diesel transport subsystem will be in fuel tank 17
Diesel oil, filtered through cleaner 16, be delivered to high voltage common rail pump 14, after high voltage common rail pump 14 pressurizes to diesel oil, conveying
To diesel common rail 11, diesel common rail 11 is connect by interface channel with dual fuel injector 21, is connected in dual fuel injector 21
The instruction of ECU 10, after internal needle valve structure is opened, high-pressure diesel in diesel common rail 11 passes through dual fuel injector 21
Oil duct, be injected directly into the combustion chamber 27 of internal combustion engine, thus ignition combustion chamber, drive gas fuel combustion acting.
Meanwhile ECU by monitoring crankshaft rotational speed sensor 30, camshaft phase sensor 31, accelerator pedal sensor 32,
A variety of monitoring internal combustion engines such as rail pressure sensor 33, water temperature sensor 34, boost-pressure sensor 35 and intake air temperature sensor 36
The sensor of parameter, the signal of the comprehensive various kinds of sensors transmitting of ECU 10, sends command signal to dual fuel injector 21, passes through
The open and close of needle valve structure and air valve structure in solenoid valve control dual fuel injector 21 are being pressed in internal combustion engine
Contracting stroke TDC first sprays a small amount of diesel oil into combustion chamber 27, and diesel oil is compression-ignited, ignition combustion chamber, then into combustion chamber
Quantitative compressed fuel gas is sprayed, to carry out work by combustion.
The present invention relates to bi-fuel internal combustion engine, can be single cylinder engine, or Multi-Cylinder Diesel Engine.
The present invention is not limited to the above-described embodiments, anyone should learn make under the inspiration of the present invention with the present invention
With same or similar technical solution, fall within the scope of protection of the present invention.
Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (6)
1. a kind of internal-combustion engine system of compression-ignited double fuel, including internal combustion engine assembly, which is characterized in that the internal combustion engine assembly connects
It is high to be connected to high-pressure diesel transport subsystem, compressed fuel gas transport subsystem, pressure release gas collection processing subsystem, double fuel
Injection subsystem and post-processing subsystem are pressed, double fuel high-pressure injection subsystem includes that dual fuel injector and combustion chamber are constituted,
Post-processing subsystem includes EGR module, SCR module and DPF module, high-pressure diesel transport subsystem, compressed fuel gas conveying
Subsystem, pressure release gas collection processing subsystem, double fuel high-pressure injection subsystem and post-processing subsystem are carried out by ECU
Control.
2. a kind of internal-combustion engine system of compression-ignited double fuel according to claim 1, it is characterised in that: the compressed gas
Fuel delivery subsystem includes liquified-gas storing pot, cryogenic pump, gasifier, pressure buffer, the first filter, pressure adjusting
The gentle rail of valve system, liquified-gas storing pot are delivered to pressure buffer by cryogenic pump and gasifier, and gasifier passes through respectively
The engine coolant entrance and engine coolant outlet of connecting line and internal combustion engine assembly, pressure buffer is through first
Filter is delivered to pressure-regulating valve system, and after the filtering of the first filter, is delivered to gas rail, gas rail passes through connecting pipe
It is connect with the dual fuel injector of internal combustion engine assembly.
3. a kind of internal-combustion engine system of compression-ignited double fuel according to claim 1, it is characterised in that: the high-pressure diesel
Transport subsystem includes fuel tank, final cleaner, oil transfer pump, high voltage common rail pump and diesel common rail, and oil transfer pump is by the bavin in fuel tank
Oil is filtered by final cleaner, is delivered to high voltage common rail pump, and after high voltage common rail pump pressurizes to diesel oil, it is total to be delivered to diesel oil
Rail, diesel common rail are connect by interface channel with dual fuel injector, receive the instruction of ECU in dual fuel injector, will be internal
Needle valve structure open after, the high-pressure diesel in diesel common rail is injected directly into internal combustion engine by the oil duct of dual fuel injector
In combustion chamber, so that ignition combustion chamber, drives gas fuel combustion acting.
4. a kind of internal-combustion engine system of compression-ignited double fuel according to claim 1, it is characterised in that: the pressure release gas
Collecting processing subsystem includes pressure-regulating valve system, gas collection processing system and enmgine exhaust, the pressure in gas rail
Contracting natural gas is injected directly into the combustion chamber of internal combustion engine by the air flue of dual fuel injector, and passes through pressure-regulating valve system
Pressure release passage be delivered to gas collection processing system.
5. a kind of internal-combustion engine system of compression-ignited double fuel according to claim 4, it is characterised in that: the gas collection
Processing system is connect with motor intake manifold by connecting pipe, and the gas fuel pressure that gas collection processing system is collected reaches
To after setting value, signal is passed to ECU by pressure sensor, and ECU is under the setting operating condition of internal combustion engine, control gas collection processing
The switch valve of system is opened, and low-pressure gas fuel can lead to motor intake manifold by connecting pipe and mix with inlet air,
Hence into combustion chamber, the burning enriching of setting ratio is carried out to setting operating condition, low-pressure gas fuel sets operating condition to internal combustion engine
Burning enriching, should repeatedly be carried out in batches according to combustion case, gas collection processing system pressure be lower than setting value when, switch valve
It closes, burning enriching stops.
6. a kind of internal-combustion engine system of compression-ignited double fuel according to claim 1, it is characterised in that: the ECU passes through
Monitor crankshaft rotational speed sensor, camshaft phase sensor, accelerator pedal sensor, rail pressure sensor, water temperature sensor, pressurization
Pressure sensor and the signal of intake air temperature sensor transmitting send command signal to dual fuel injector, pass through solenoid valve control
The open and close of needle valve structure and air valve structure in dual fuel injector.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910119481.0A CN109931188B (en) | 2019-02-18 | Compression ignition type dual-fuel internal combustion engine system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910119481.0A CN109931188B (en) | 2019-02-18 | Compression ignition type dual-fuel internal combustion engine system |
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CN109931188A true CN109931188A (en) | 2019-06-25 |
CN109931188B CN109931188B (en) | 2024-06-07 |
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Cited By (3)
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WO2021218712A1 (en) * | 2020-04-28 | 2021-11-04 | 未势能源科技有限公司 | Fuel processing unit and fuel storage and supply system having same |
CN114439658A (en) * | 2020-10-30 | 2022-05-06 | 英嘉动力科技无锡有限公司 | Fuel supply system of dual-fuel direct injection system engine |
CN114623021A (en) * | 2022-03-09 | 2022-06-14 | 一汽解放汽车有限公司 | Pressure regulating system |
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