CN110318900A - In a kind of cylinder, the combustion method of inlet manifold and precombustion chamber mixed gas supply - Google Patents

In a kind of cylinder, the combustion method of inlet manifold and precombustion chamber mixed gas supply Download PDF

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Publication number
CN110318900A
CN110318900A CN201910559255.4A CN201910559255A CN110318900A CN 110318900 A CN110318900 A CN 110318900A CN 201910559255 A CN201910559255 A CN 201910559255A CN 110318900 A CN110318900 A CN 110318900A
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Prior art keywords
cylinder
natural gas
injection
high pressure
valve
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CN201910559255.4A
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CN110318900B (en
Inventor
宋恩哲
杨志鹏
杨立平
董全
姚崇
孙军
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Harbin Engineering University
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Harbin Engineering University
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
    • F02B19/108—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber
    • F02B19/1085—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber controlling fuel injection
    • 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
    • F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
    • 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
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
    • 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
    • F02M21/0248—Injectors
    • 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
    • F02M21/0248—Injectors
    • F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
    • 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
    • F02M21/0284—Arrangement of multiple injectors or fuel-air mixers per combustion chamber
    • 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
    • F02M21/029—Arrangement on engines or vehicle bodies; Conversion to gaseous fuel supply systems
    • 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
    • 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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  • 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)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The purpose of the present invention is to provide in a kind of cylinder, the combustion method of inlet manifold and precombustion chamber mixed gas supply, according to the different operating conditions of engine, pass through gas supply ratio of the control natural gas in inlet manifold low-pressure fuel injection and cylinder in high pressure direct injection, making gaseous mixture in cylinder is in the layering of concentration gradient, jet by high pressure direct injection snifting valve in control low-pressure fuel gas injection valve and cylinder is regular, the layering dimensions of gaseous mixture in further master cylinder.The present invention passes through gas supply ratio, the jet rule of high pressure direct injection snifting valve and low-pressure fuel gas injection valve in pre-burning indoor location check valve gas supply, control natural gas in inlet manifold low-pressure fuel injection and cylinder in high pressure direct injection, achieve the purpose that a degree of enriching of gaseous mixture in precombustion chamber, gaseous mixture has ideal concentration stratification in cylinder, to realize stable ignition and the fast hierarchical burning under each operating condition of natural gas engine, the working efficiency of large-scale natural gas engine was not only improved but also had improved the stability of its work.

Description

In a kind of cylinder, the combustion method of inlet manifold and precombustion chamber mixed gas supply
Technical field
The present invention relates to a kind of engine controls, specifically natural gas engine control method.
Background technique
Large-diameter natural gas engine is equipped with precombustion chamber to improve ignition energy, since natural gas has ignitability more Difference, the problems such as flame propagation velocity is slow, on the natural gas engine of large-diameter, it is necessary to natural gas in rationalization's engine cylinder Concentration distribution optimize the combustion process in Cylinder of Natural Gas Engine, to realize that efficient low-discharging burns.
At present, most of natural gas engine uses the plenum system of single injection event natural gas in air intake duct.In order to improve Using the combustibility of the natural gas engine of this plenum system, partial monopoly such as CN104500248A is proposed in air intake duct The method of interior multi-injection natural gas provides the mixing of various concentration gradient according to the different load of engine in air intake duct Gas enters cylinder and realizes a degree of stratified combustion, but the method for no matter using air intake duct single injection event or multi-injection, After gaseous mixture enters cylinder, influenced by air motion, the case where gaseous mixture will appear random layering in cylinder, be easy to cause compared with Large-scale combustion cyclical variations.
In order to improve the Combustion Cycle Variability of natural gas engine, some natural gas engines are straight using high pressure single in cylinder The method of spray realizes the burning of fast and stable in cylinder by control injection timing, ignition timing to in-cylinder fuel supply, but single is straight The layered effect for spraying gaseous mixture in cylinder is still undesirable, also can not be according to charge stratification ruler in engine current working master cylinder Degree.
Summary of the invention
The purpose of the present invention is to provide confession of the control natural gas in inlet manifold low-pressure fuel injection and cylinder in high pressure direct injection The ignition timing of the jet rule, spark plug of high pressure direct injection snifting valve, reaches and has in gas ratio, low-pressure fuel gas injection valve and cylinder The large-scale natural gas engine stabilizer of precombustion chamber light a fire and a kind of cylinder of stratified combustion purpose in, inlet manifold and precombustion chamber mixing The combustion method of gas supply.
The object of the present invention is achieved like this:
In a kind of cylinder of the present invention, the combustion method of inlet manifold and precombustion chamber mixed gas supply, it is characterized in that: include cylinder, Cylinder head, piston, air intake duct form bathtub shape main combustion chamber, high pressure direct injection in cylinder are arranged in cylinder head between piston and cylinder head Snifting valve, check valve, precombustion chamber, spark plug, glow plug head portion are located in precombustion chamber, check valve be arranged above precombustion chamber and with Precombustion chamber communicates, and the nozzle of high pressure direct injection snifting valve is located in bathtub shape main combustion chamber in cylinder, and low-pressure fuel gas is arranged in air intake duct and sprays Valve is penetrated, precombustion chamber bottom is equipped with three bifurcated blast tubes, and three bifurcated blast tubes are deep into bathtub shape main combustion chamber；
According to the different operating conditions of engine, through control natural gas in inlet manifold low-pressure fuel injection and cylinder in high pressure direct injection Gas supply ratio, making gaseous mixture in cylinder is in the layering of concentration gradient, passes through high pressure direct injection in control low-pressure fuel gas injection valve and cylinder The jet of snifting valve is regular, the layering dimensions of gaseous mixture in further master cylinder.
The present invention may also include:
1, (1) when natural gas engine is in running on the lower load, in cylinder high pressure direct injection snifting valve IC Intake Valve Closes extremely Piston runs to before top dead centre during 20 °C of A the single injection event natural gas into cylinder；The amount of natural gas of high pressure direct injection accounts for every circulation consumption Ratio>60% of tolerance, the amount of natural gas of inlet manifold injection account for ratio<30% of every circulation air consumption；The igniting of spark plug Timing control is before piston top dead center between 25~35 °C of A；
(2) when natural gas engine is in middle load condition, high pressure direct injection snifting valve is in IC Intake Valve Closes to work in cylinder Plug runs to before top dead centre during 20 °C of A the single injection event natural gas into cylinder；The amount of natural gas and inlet manifold of high pressure direct injection are sprayed The amount of natural gas penetrated accounts for being in equal proportions for every circulation air consumption；The ignition timing of spark plug controls 20 before piston top dead center~ Between 30 °C of A；
(3) when natural gas engine is in high load capacity operating condition, high pressure direct injection snifting valve is in IC Intake Valve Closes to work in cylinder Fill in the natural gas injection for carrying out equivalent twice before running to top dead centre during 20 °C of A into cylinder；The amount of natural gas of high pressure direct injection accounts for Ratio<30% of every circulation air consumption, the amount of natural gas of inlet manifold injection account for ratio>60% of every circulation air consumption；Spark The ignition timing of plug is controlled before piston top dead center between 10~20 °C of A.
Present invention has an advantage that the present invention in pre-burning indoor location check valve by supplying, control natural gas is in air inlet The jet of gas supply ratio, high pressure direct injection snifting valve and low-pressure fuel gas injection valve in menifold low-pressure fuel injection and cylinder in high pressure direct injection is advised Rule achievees the purpose that a degree of enriching of gaseous mixture in precombustion chamber, gaseous mixture has ideal concentration stratification in cylinder, thus real Stable ignition and fast hierarchical burning under the existing each operating condition of natural gas engine, had both improved the work of large-scale natural gas engine Make the stability that efficiency improves its work again.
Detailed description of the invention
Fig. 1 is combustion system schematic diagram of the invention；
Fig. 2 is the gas supply schematic diagram that high pressure direct injection is combined with inlet manifold low-pressure fuel injection in cylinder；
Fig. 3 is the schematic diagram that check valve is supplied to precombustion chamber；
Fig. 4 is the schematic diagram that high-temperature fuel gas is ejected into main combustion chamber through three bifurcated blast tubes in precombustion chamber；
Fig. 5 is gaseous mixture large scale hierarchical diagram in cylinder under engine low load operating condition；
Fig. 6 is the small scale hierarchical diagram of gaseous mixture in cylinder under load in engine；
Fig. 7 is the hierarchical diagram of gaseous mixture in cylinder under high engine load.
Specific embodiment
It illustrates with reference to the accompanying drawing and the present invention is described in more detail:
In conjunction with Fig. 1-7, the present invention is a kind of using the multiple direct-injection of high pressure, inlet manifold low-pressure fuel injection and precombustion chamber low pressure in cylinder The natural gas engine combustion method of air inlet mixed gas supply, combustion system composition includes: low-pressure fuel gas injection valve 1, cylinder head 2, check valve 3, precombustion chamber 4, spark plug 5, three bifurcated blast tubes 6, high pressure direct injection snifting valve 7, piston 8, bathtub shape master in cylinder Fire room 9.Three sets of feeders are equipped with for certain four stroke natural gas engine of large-diameter of use: being mounted in inlet manifold by low First set feeder that pressure fuel gas injection valve 1 supplies, the supplied by high pressure direct injection snifting valve 7 being mounted in cylinder head 2 Two sets of feeders are mounted on the third set feeder that 4 top of precombustion chamber is supplied by check valve 3；
Low-pressure fuel gas injection valve 1 is mounted in engine suction manifold, in engine working process into inlet manifold Single injection event natural gas, high pressure direct injection snifting valve 7 are mounted in cylinder cap 2 for single hole arrangements and with cylinder cap lower surface in 60 ° of inclination angles, Its installation site can guarantee the center of its central axes face main combustion chamber 9 when piston runs to compression top center, in engine Single or multiple to cylinder injection natural gas in the course of work, check valve 3 is pressure check valve, is inclined with cylinder cap upper surface in 60 ° Angle is mounted in cylinder cap 2, is supplied in engine charge stage one direction to precombustion chamber 4；Spark plug 5 and cylinder cap lower surface are in 120 ° Inclination angle is mounted in precombustion chamber 4；Precombustion chamber bottom is equipped with three bifurcated blast tubes 6 and is deep into main chamber, prevents day in cylinder What so gas was excessive also can be shortened propagation distance of the flame in main combustion chamber into precombustion chamber simultaneously.
The operating condition according to locating for engine controls natural gas in inlet manifold low-pressure fuel injection and cylinder in high pressure direct injection in time Gas supply ratio realizes the layering of gas in the jar a certain concentration gradient；By the control to the plug ignition moment, light in due course pre- The indoor certain density gaseous mixture of combustion, guarantees the stability of each load down-firing of engine, to realize that large-diameter natural gas is sent out The layering conflagration of motivation, the gas supply and ignition strategies of different load engine are as follows:
(1) when natural gas engine is in running on the lower load, natural gas mainly enters cylinder in a manner of high pressure direct injection； Into cylinder, single injection event is natural during 20 °C of A before IC Intake Valve Closes to piston run to top dead centre for high pressure direct injection snifting valve 7 Gas；The amount of natural gas of high pressure direct injection accounts for ratio > 60% of every circulation air consumption, and the amount of natural gas of inlet manifold injection accounts for every circulation Ratio < 30% of air consumption；The ignition timing of spark plug is controlled before piston top dead center between 25~35 °C of A；Mixing in cylinder at this time Gas is in the biggish layering of concentration gradient, is improved under engine low load operating condition using the biggish stratified combustion of this concentration gradient The stability of in-cylinder combustion and flame propagation keeps burning more abundant.
(2) when natural gas engine is in middle load condition, high pressure direct injection snifting valve 7 is transported in IC Intake Valve Closes to piston Row to during 20 °C of A before top dead centre into cylinder single injection event natural gas；Amount of natural gas and the inlet manifold injection of high pressure direct injection The ratio that amount of natural gas accounts for every circulation air consumption is roughly equal；The ignition timing of spark plug controls 20 before piston top dead center~ Between 30 °C of A；Gaseous mixture is in the lesser layering of concentration gradient in cylinder at this time, using the lesser stratified combustion energy of this concentration gradient Improve the working efficiency in engine under load condition.
(3) when natural gas engine is in high load capacity operating condition, natural gas is mainly entered in a manner of manifold injection Cylinder；High pressure direct injection snifting valve 7 carries out twice during 20 °C of A into cylinder before IC Intake Valve Closes to piston run to top dead centre The natural gas injection of equivalent；The amount of natural gas of high pressure direct injection accounts for ratio < 30% of every circulation air consumption, the day of inlet manifold injection Right tolerance accounts for ratio > 60% of every circulation air consumption；The ignition timing of spark plug controls 10~20 °C of A before piston top dead center Between；Gaseous mixture, can be effective using this stratified combustion effect in a wide range of homogeneous, the small concentration gradient in part layering in cylinder at this time Reduce the discharge of engine.
In summary, which uses the single injection event day in the inlet manifold of the large-diameter natural gas engine Multi-injection natural gas in right gas, main chamber, the gas supply strategy unidirectionally supplied in precombustion chamber, by control natural gas in air inlet The jet rule of gas supply ratio, high pressure direct injection snifting valve and low pressure snifting valve in menifold low-pressure fuel injection and cylinder in high pressure direct injection, The ignition timing of spark plug, realizes the layering conflagration of gaseous mixture in large-diameter Cylinder of Natural Gas Engine, and this method only needs pair Existing large size prechamber gas machine is slightly transformed, and industrialization prospect is preferable.

Claims (2)

1. in a kind of cylinder, the combustion method of inlet manifold and precombustion chamber mixed gas supply, it is characterized in that: including cylinder, cylinder head, work Plug, air intake duct form bathtub shape main combustion chamber, high pressure direct injection snifting valve, list in cylinder are arranged in cylinder head between piston and cylinder head To valve, precombustion chamber, spark plug, glow plug head portion is located in precombustion chamber, check valve be arranged above precombustion chamber and with precombustion chamber phase Logical, the nozzle of high pressure direct injection snifting valve is located in bathtub shape main combustion chamber in cylinder, and low-pressure fuel gas injection valve, pre-burning are arranged in air intake duct Room bottom is equipped with three bifurcated blast tubes, and three bifurcated blast tubes are deep into bathtub shape main combustion chamber；
According to the different operating conditions of engine, pass through confession of the control natural gas in inlet manifold low-pressure fuel injection and cylinder in high pressure direct injection Gas ratio makes gaseous mixture in cylinder pass through high pressure direct injection jet in control low-pressure fuel gas injection valve and cylinder in the layering of concentration gradient The jet of valve is regular, the layering dimensions of gaseous mixture in further master cylinder.
2. in a kind of cylinder according to claim 1, the combustion method of inlet manifold and precombustion chamber mixed gas supply, feature It is:
(1) when natural gas engine is in running on the lower load, high pressure direct injection snifting valve is transported in IC Intake Valve Closes to piston in cylinder Row to during 20 °C of A before top dead centre into cylinder single injection event natural gas；The amount of natural gas of high pressure direct injection accounts for every circulation air consumption Ratio>60%, the amount of natural gas of inlet manifold injection account for ratio<30% of every circulation air consumption；The ignition timing control of spark plug System is before piston top dead center between 25~35 °C of A；
(2) when natural gas engine is in middle load condition, high pressure direct injection snifting valve is transported in IC Intake Valve Closes to piston in cylinder Row to during 20 °C of A before top dead centre into cylinder single injection event natural gas；Amount of natural gas and the inlet manifold injection of high pressure direct injection Amount of natural gas accounts for being in equal proportions for every circulation air consumption；The ignition timing of spark plug controls 20~30 °C of A before piston top dead center Between；
(3) when natural gas engine is in high load capacity operating condition, high pressure direct injection snifting valve is transported in IC Intake Valve Closes to piston in cylinder It goes to the natural gas injection for carrying out equivalent twice during 20 °C of A before top dead centre into cylinder；The amount of natural gas of high pressure direct injection, which accounts for, often to be followed Ratio<30% of ring air consumption, the amount of natural gas of inlet manifold injection account for ratio>60% of every circulation air consumption；Spark plug Ignition timing control is before piston top dead center between 10~20 °C of A.
CN201910559255.4A 2019-06-26 2019-06-26 Combustion method for mixed gas supply in cylinder, intake manifold and precombustion chamber Active CN110318900B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111456858A (en) * 2020-02-18 2020-07-28 哈尔滨工程大学 Natural gas engine fuel gas injection method based on' previous cycle effect
WO2021236559A1 (en) * 2020-05-20 2021-11-25 Board Of Trustees Of Michigan State University Internal combustion engine including multiple fuel injections external to a pre-chamber

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010281322A (en) * 2009-06-03 2010-12-16 IFP Energies Nouvelles Fuel injection method for direct injection internal combustion engine
CN109098835A (en) * 2018-09-29 2018-12-28 哈尔滨工程大学 A kind of natural gas engine burning tissues method with high pressure direct injection in precombustion chamber low pressure gas supply and cylinder
CN109184898A (en) * 2018-09-29 2019-01-11 哈尔滨工程大学 A kind of marine large-diameter natural gas engine precombustion chamber multiple jet ignition type highly effective combustion system
CN109296446A (en) * 2018-09-29 2019-02-01 哈尔滨工程大学 A kind of diesel oil with natural gas high-low pressure mixing jetting and precombustion chamber is micro- to spray natural gas engine burning tissues method of igniting
CN109899150A (en) * 2019-02-18 2019-06-18 哈尔滨工程大学 One kind being suitable for the micro- spray diesel oil of large-diameter-natural gas double fuel engine stratified combustion control method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010281322A (en) * 2009-06-03 2010-12-16 IFP Energies Nouvelles Fuel injection method for direct injection internal combustion engine
CN109098835A (en) * 2018-09-29 2018-12-28 哈尔滨工程大学 A kind of natural gas engine burning tissues method with high pressure direct injection in precombustion chamber low pressure gas supply and cylinder
CN109184898A (en) * 2018-09-29 2019-01-11 哈尔滨工程大学 A kind of marine large-diameter natural gas engine precombustion chamber multiple jet ignition type highly effective combustion system
CN109296446A (en) * 2018-09-29 2019-02-01 哈尔滨工程大学 A kind of diesel oil with natural gas high-low pressure mixing jetting and precombustion chamber is micro- to spray natural gas engine burning tissues method of igniting
CN109899150A (en) * 2019-02-18 2019-06-18 哈尔滨工程大学 One kind being suitable for the micro- spray diesel oil of large-diameter-natural gas double fuel engine stratified combustion control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111456858A (en) * 2020-02-18 2020-07-28 哈尔滨工程大学 Natural gas engine fuel gas injection method based on' previous cycle effect
CN111456858B (en) * 2020-02-18 2022-03-18 哈尔滨工程大学 Natural gas engine fuel gas injection method based on' previous cycle effect
WO2021236559A1 (en) * 2020-05-20 2021-11-25 Board Of Trustees Of Michigan State University Internal combustion engine including multiple fuel injections external to a pre-chamber
US11939905B2 (en) 2020-05-20 2024-03-26 Board Of Trustees Of Michigan State University Internal combustion engine including multiple fuel injections external to a pre-chamber

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