CN107387234B - A kind of the gas/liquid fuel feed system and control method of direct injection rotary engine - Google Patents
A kind of the gas/liquid fuel feed system and control method of direct injection rotary engine Download PDFInfo
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- CN107387234B CN107387234B CN201710629403.6A CN201710629403A CN107387234B CN 107387234 B CN107387234 B CN 107387234B CN 201710629403 A CN201710629403 A CN 201710629403A CN 107387234 B CN107387234 B CN 107387234B
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- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
-
- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/02—Methods of operating
-
- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/10—Fuel supply; Introducing fuel to combustion space
-
- 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
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/02—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/02—Arrangements having two or more sparking plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0611—Fuel type, fuel composition or fuel quality
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The present invention provides a kind of gas/liquid fuel feed systems of direct injection rotary engine, including rotary engine, gas ejecting system, spray system and automatically controlled ECU；The rotary engine includes cylinder body, combustion chamber and three-apexed rotor；The combustion chamber is between the cylinder body and three-apexed rotor；The exhaust pipe with third combustion chamber is equipped in the cylinder body；The spray system includes liquid fuel nozzle and spark plug；The liquid fuel nozzle is mounted on cylinder body, and with the second combustion chamber；Spark plug is equipped in second combustion chamber；The gas ejecting system includes second gas fuel nozzle, and the second gas fuel nozzle is mounted on cylinder body, and with the first combustion chamber；The automatically controlled ECU is connect with spark plug, liquid fuel nozzle, speed probe and second gas fuel nozzle.The ignition strategies of injection strategy and spark plug that the present invention can accurately control gas and liquid fuel carry out formation and the reliable ignition of rationalization's gaseous mixture.
Description
Technical field
The present invention relates to field of internal combustion engine more particularly to a kind of gas/liquid fuel feed systems of direct injection rotary engine
And control method.
Background technique
Rotary engine is compared with reciprocating-piston engine with structure is simple, power density is high, noise is small, vibration
Feature low, high speed performance is excellent.Especially its multi fuel performance outstanding, has received widespread attention it.At present for only
The rotary engine for using single-fuel causes the flammable of its combustion chamber rear portion due to its law of flame from the front to the back
Gaseous mixture can't burn completely, and then lead to that efficiency of combustion is low, emission performance is poor.It is well known that gaseous fuel is burned
There is faster flame propagation velocity, liquid fuel blending gaseous fuel can effectively improve the burning speed of rotary engine in journey
Rate.
However the excavation of rotary engine multi fuel performance technologies is not still deep enough at present.Therefore, rotary engine is fired
Its multi fuel performance is expanded with the double fuel of gas/liquid form to be of great significance.In addition, quick with electric-controlled injection technology
Development, obtains mature application, it accurately controls fuel injection parameters to meet not on reciprocating-piston engine
With the demand and supply under operating condition.But there is larger difference therewith in the air motion form in rotary engine cylinder, high speed is forward
One-way gas flow bring lot of challenges to the distribution of rationalization's gaseous mixture, especially there is atomization, evaporation, be rebuffed in liquid fuel
And the process of attached wall, air-fuel mixture process are more complicated.At the same time, current EFI spraying technique is in rotary engine
It develops, using much insufficient.
Summary of the invention
In response to the deficiencies in the existing technology, the present invention provides a kind of confessions of the gas/liquid fuel of direct injection rotary engine
To system and control method, the ignition strategies of the injection strategy and spark plug that can accurately control gas and liquid fuel are closed
Formation and the reliable ignition for managing tissue gaseous mixture can solve the problems, such as that rotary engine low efficiency and discharge be not up to standard, sufficiently open up
The multi fuel characteristic for opening up rotary engine, is conducive to the promotion of rotary engine performance.
The present invention achieves the above technical objects by the following technical means.
A kind of gas/liquid fuel feed system of direct injection rotary engine, including rotary engine, gas ejecting system, hydrojet
System and automatically controlled ECU；The rotary engine includes cylinder body, combustion chamber and three-apexed rotor；It is equipped in the cylinder body and passes through bias
The three-apexed rotor that crankshaft drives；The combustion chamber is between the cylinder body and three-apexed rotor；The combustion chamber is by the triangle
Rotor is divided into the first combustion chamber, the second combustion chamber and third combustion chamber, and the first combustion chamber, the second combustion chamber and third combustion chamber
Volume rotates with three-apexed rotor and is changed；The eccentric crankshaft is equipped with speed probe, for measuring eccentric crankshaft revolving speed；It is described
The exhaust pipe with third combustion chamber is equipped in cylinder body；The spray system includes liquid fuel nozzle and spark plug；It is described
Liquid fuel nozzle is mounted on cylinder body, and with the second combustion chamber；Spark plug is equipped in second combustion chamber；The electricity
Control ECU is connect with spark plug, liquid fuel nozzle and speed probe；The gas ejecting system is controlled by automatically controlled ECU by gas
Fuel is inputted into the first combustion chamber.
Further, the gas ejecting system includes air inlet pipe, premix chamber and first gas fuel nozzle；The air inlet pipe and the
One combustion chamber, the air inlet pipe are equipped with premix chamber, install first gas fuel nozzle on the premix chamber；It is described automatically controlled
ECU is connect with first gas fuel nozzle；Or the gas ejecting system includes second gas fuel nozzle, the second gas combustion
Material nozzle be mounted on cylinder body, and with the first combustion chamber；The automatically controlled ECU is connect with second gas fuel nozzle.
Further, the outer surface of the three-apexed rotor is equipped with pit；The cross section of the pit is approximately triangle.
Further, the outer surface arc transition of the pit and the three-apexed rotor, arc radius 8-10mm；It is described recessed
The angle theta for cheating contour line is 120 °~128 °.
Further, the spark plug includes the first spark plug and the second spark plug；First spark plug and the second spark
Plug is distributed in the second combustion chamber according to the axial of eccentric crankshaft, and is arranged symmetrically according to liquid fuel nozzle；First fire
The distance between Hua Sai and the second spark plug are 30~40mm；First spark plug and the second spark plug arrive liquid fuel respectively
Nozzle distance is 25~35mm.
Further, the horizontal center line angle of the liquid fuel nozzle and cylinder body is 45 °~60 °；The first gas
The injection direction of fuel nozzle and the angle of air inlet pipe axis are 30 °~45 °；Or second gas fuel nozzle injection side
It is 0 °~30 ° to the horizontal center line angle with cylinder body.
Further, the gas that the first gas fuel nozzle or second gas fuel nozzle spray is for biogas or naturally
Gas or hydrogen or oil gas；The liquid gasoline or diesel oil or kerosene or aviation oil or biological bavin that the liquid fuel nozzle sprays
Oil or heavy oil.
It further, further include air flow meter, gaseous fuel flow meter and liquid fuel flowmeter；The air flow meter
It is mounted on air inlet pipe inlet；The liquid fuel flowmeter is mounted on the pipeline of liquid fuel nozzle；The gaseous fuel
Flowmeter is mounted on the pipeline of first gas fuel nozzle or on the pipeline of second gas fuel nozzle；The air mass flow
Meter, gaseous fuel flow meter and liquid fuel flowmeter are connect with automatically controlled ECU.
A kind of control method of the gas/liquid fuel feed system of direct injection rotary engine, automatically controlled ECU is according to gaseous fuel
Blend proportion control gaseous fuel and liquid fuel enter the amount of combustion chamber, realize the selection of fuel method of supplying,
The gaseous fuel Blend proportion:
Wherein:For the gaseous fuel mass flow of gas fuel flow rate meter measurement；
For the liquid fuel mass flow of liquid fuel flowmeter measurement；
Specific control method is as follows:
A. rotary engine operating mode is neat liquid fuel method of supplying, automatically controlled ECU according to gaseous fuel flow meter and
When liquid fuel flowmeter calculating gaseous fuel Blend proportion is η=0%, indicate that liquid fuel nozzle, which is used only, carries out fuel confession
It gives, automatically controlled ECU judges the position of three-apexed rotor according to the signal of speed probe, controls the first spark plug and the second spark plug work
Make；
B. rotary engine work is in gas/liquid combustion mode, and automatically controlled ECU is according to gaseous fuel flow meter and liquid fuel stream
When meter calculating gaseous fuel Blend proportion is 0 < η < 100%, indicate to use first gas fuel nozzle or second gas fuel
Nozzle and liquid fuel nozzle carry out fuel supply, and automatically controlled ECU judges the position of three-apexed rotor according to the signal of speed probe,
Control the first spark plug and the work of the second spark plug；
C. rotary engine work is in pure gas fuel method of supplying, and automatically controlled ECU is according to gaseous fuel flow meter and liquid
When fuel flow meter calculating gaseous fuel Blend proportion is η=100%, indicate to use first gas fuel nozzle or second gas
Fuel nozzle carries out fuel supply, and automatically controlled ECU judges the position of three-apexed rotor, the first fire of control according to the signal of speed probe
Hua Sai or the work of the second spark plug.
Further, the automatically controlled ECU is also according to the amount for calculating excess air ratio control air and fuel, the burning mould of realization
Formula selection, the excess air ratio:
Wherein:For the air quality flow of air flow meter measurement；
AFst,gasFor the chemically correct fuel of gaseous fuel；
AFst,liquldFor the chemically correct fuel of liquid fuel；
Specific control method is as follows:
A. in the case where rotary engine operating mode is neat liquid fuel method of supplying, i.e., as η=0%, automatically controlled ECU passes through
The inlet of control air and liquid fuel makes λ > 1, and air saves fuel than liquid fuel excess this moment, is used for gaseous fuel
Insufficient combustion mode and fuel-saving combustion mode；
B. it works in rotary engine and burns under method of supplying in gas/liquid, i.e., as 0 < η < 100%, if passing through the first gas
Fluid fuel nozzle and liquid fuel nozzle carry out the supply of gas/liquid fuel, and automatically controlled ECU passes through control air, gaseous fuel and liquid
The inlet of fuel makes λ≤1, and gaseous fuel is introduced into premix chamber by first gas fuel nozzle, abundant with the mixing of air
After mixing, then combustion chamber entered by air inlet pipe, fuel is sufficient at this time, gaseous fuel homogeneous momentum mode is realized, for starting
The combustion mode of confidential demanded driving force performance；If carrying out the confession of gas/liquid fuel by second gas fuel nozzle and liquid fuel nozzle
It gives, automatically controlled ECU makes λ > 1 by the inlet of control air, gaseous fuel and liquid fuel, and gaseous fuel is fired by second gas
Expect in nozzle direct-injection combustion chamber, the air of combustion chamber realizes gas combustion than the summation of gaseous fuel and liquid fuel excess at this time
Material and liquid fuel portion mix the combustion mode to partly-premixed transformation, for engine calls fuel economy；
C. in rotary engine work under pure gas fuel method of supplying, i.e., as η=100%, if passing through the first gas
Fluid fuel nozzle carries out gaseous fuel supply, and automatically controlled ECU makes λ≤1, gas combustion by controlling the inlet of air and gas fuel
Material by first gas fuel nozzle is introduced into premix chamber, after the mixing with air is sufficiently mixed, then by air inlet pipe enters combustion
Room is burnt, fuel is sufficient at this time, realizes gaseous fuel homogeneous momentum mode, for the insufficient combustion mode of liquid fuel and requires dynamic
The combustion mode of power；If carrying out gaseous fuel supply by second gas fuel nozzle, automatically controlled ECU is gentle by control air
The inlet of fluid fuel makes λ > 1, and gaseous fuel passes through in second gas fuel nozzle direct-injection combustion chamber, at this time the air of combustion chamber
Than gaseous fuel excess, realizes that gaseous fuel part is mixed to partly-premixed transformation, be used for the insufficient combustion mode of liquid fuel
With the combustion mode for requiring economy.
The beneficial effects of the present invention are:
1. the gas/liquid fuel feed system of direct injection rotary engine of the present invention passes through control gas nozzle
It sprays with fuel supply volume and realizes the different mixabilities of gaseous fuel, so that engine operation is in different dual combustion modes
Under, and then be conducive to improve burn rate, improve power performance, economic performance and the emission performance of rotary engine.
2. the gas/liquid fuel feed system of direct injection rotary engine of the present invention, by the opening and closing for controlling nozzle
With the Blend proportion of gaseous fuel, make its work under different fuel delivery modes, further sufficiently expands rotary engine
Multi fuel characteristic.
3. the control method of the gas/liquid fuel feed system of direct injection rotary engine of the present invention, by accurate
Excess air ratio λ and gaseous fuel Blend proportion η is controlled, realizes that rotary engine works in different modes, can promote automatically controlled spray
Penetrate application of the technology in rotary engine.
Detailed description of the invention
Fig. 1 is the structure of the embodiment one of the gas/liquid fuel feed system of direct injection rotary engine of the present invention
Schematic diagram.
Fig. 2 is the structure of the embodiment two of the gas/liquid fuel feed system of direct injection rotary engine of the present invention
Schematic diagram.
Fig. 3 is rotary engine internal view of the present invention.
Fig. 4 is the bottom view of Fig. 1.
In figure:
1- air inlet pipe；2- air flow meter；3- premix chamber；4- first gas fuel nozzle；5- gaseous fuel flow meter；6-
First combustion chamber；7- second gas fuel nozzle；8- exhaust pipe；The second combustion chamber 9-；10- liquid fuel nozzle；The combustion of 11- liquid
Stream meter；12- third combustion chamber；The automatically controlled ECU of 13-；The first spark plug of 14-；The second spark plug of 15-；16- pit；17- revolving speed
Sensor；18- eccentric crankshaft；19- three-apexed rotor；20- cylinder body.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples, but protection scope of the present invention is simultaneously
It is without being limited thereto.
Embodiment one as shown in connection with fig. 1, a kind of gas/liquid fuel feed system of direct injection rotary engine, including turn
Sub- engine, gas ejecting system, spray system and automatically controlled ECU13；The rotary engine includes that cylinder body 20, combustion chamber and triangle turn
Son 19；The three-apexed rotor 19 driven by eccentric crankshaft 18 is equipped in the cylinder body 20；The combustion chamber is located at the cylinder body 20
Between three-apexed rotor 19；The combustion chamber is divided into the first combustion chamber 6, the second combustion chamber 9 and third by the three-apexed rotor 19
Combustion chamber 12, and the first combustion chamber 6, the second combustion chamber 9 and 12 volume of third combustion chamber rotate with three-apexed rotor 19 and are changed；Institute
Eccentric crankshaft 18 is stated equipped with speed probe 17, for measuring 18 revolving speed of eccentric crankshaft；It is equipped in the cylinder body 20 and is fired with third
Burn the exhaust pipe 8 that room 12 is connected to；The spray system includes liquid fuel nozzle 10 and spark plug；The liquid fuel nozzle 10
It is mounted on cylinder body 20, and is connected to the second combustion chamber 9；Spark plug is equipped in second combustion chamber 9；The gas ejecting system packet
Include air inlet pipe 1, premix chamber 3 and first gas fuel nozzle 4；The air inlet pipe 1 is connected to the first combustion chamber 6, the air inlet pipe 1
It is equipped with premix chamber 3, first gas fuel nozzle 4 is installed on the premix chamber 3；The automatically controlled ECU13 and spark plug, liquid fire
Expect that nozzle 10, speed probe 17 and first gas fuel nozzle 4 connect.
Embodiment two as shown in connection with fig. 2, the main distinction are that gas ejecting system, the gas ejecting system of embodiment two include second
Gas fuel nozzle 7, the second gas fuel nozzle 7 are mounted on cylinder body 20, and are connected to the first combustion chamber 6；The electricity
Control ECU13 is connect with spark plug, liquid fuel nozzle 10, speed probe 17 and second gas fuel nozzle 7.
In embodiment one and embodiment two, what the first gas fuel nozzle 4 or second gas fuel nozzle 7 sprayed
Gas is biogas or natural gas or hydrogen or oil gas；The liquid gasoline or diesel oil or kerosene that the liquid fuel nozzle 10 sprays
Or aviation oil or biodiesel or heavy oil.
As shown in figure 3, the outer surface of the three-apexed rotor 19 is equipped with pit 16；The cross section of the pit 16 is approximately three
It is angular.The outer surface arc transition of the pit 16 and the three-apexed rotor 19, arc radius 8-10mm；The pit 16 is taken turns
The angle theta of profile is 120 °~128 °.Purpose is to ensure that the fuel of high speed injection collides and spreads at pit 16, in turn
So that fuel is focused mostly in the middle front part of combustion chamber, is conducive to subsequent combustion acting and power output.The first gas fuel spray
The injection direction of mouth 4 and the angle of 1 axis of air inlet pipe are 30 °~45 °；Or 7 injection direction of second gas fuel nozzle
Horizontal center line angle with cylinder body 20 is 0 °~30 °.The horizontal center line angle of the liquid fuel nozzle 10 and cylinder body 20
It is 45 °~60 °.
Shown in Fig. 4, the spark plug includes the first spark plug 14 and the second spark plug 15；First spark plug 14 and
Two spark plugs 15 are distributed in the second combustion chamber 9 according to the axial direction of eccentric crankshaft 18, and according to the symmetrical cloth of liquid fuel nozzle 10
It sets；The distance between first spark plug 14 and the second spark plug 15 are 30~40mm；First spark plug 14 and second
Spark plug 15 arrives liquid fuel nozzle 10 apart from for 25~35mm respectively.Since rotary engine compression is relatively low, cause only
Pressure and temperature near point is relatively low, is unfavorable for the rapid evaporation and diffusion of attached wall fuel in this way, ignition system uses thus
The dual ignition plug of parallel arrangement and close liquid fuel nozzle, they are the liquid fuel that can ensure that time of ignition compared with concentration
Reliable kindling, and be conducive to stablizing for attached wall fuel and burn, be conducive to the steady operation of engine.
It further include air flow meter 2, gaseous fuel flow meter 5 and liquid fuel flowmeter 11；The air flow meter 2 is pacified
Mounted in 1 inlet of air inlet pipe；The liquid fuel flowmeter 11 is mounted on the pipeline of liquid fuel nozzle 10；The gas combustion
Stream meter 5 is mounted on the pipeline of first gas fuel nozzle 4 or on the pipeline of second gas fuel nozzle 7；The sky
Air-flow meter 2, gaseous fuel flow meter 5 and liquid fuel flowmeter 11 are connect with automatically controlled ECU13.
Automatically controlled ECU13 can detect the position of crank angle, and then judge three-apexed rotor according to rotary engine operating condition
19 position, the revolving speed of eccentric crankshaft 18 are three times of three-apexed rotor revolving speed 19, it is accurate control first gas fuel nozzle (4) or
Person's second gas fuel nozzle (7), the opening and closing of liquid fuel nozzle (10) and injection strategy and subsequent dual ignition plug igniting
Strategy, time of ignition fuel can reliable ignition, it is ensured that rotary engine the operation is stable and sufficiently expand the more of rotor machine
Fuel characteristic；
A kind of control method of the gas/liquid fuel feed system of direct injection rotary engine, automatically controlled ECU13 are fired according to gas
Material Blend proportion control gaseous fuel and liquid fuel enter the amount of combustion chamber, realize the selection of fuel method of supplying,
The gaseous fuel Blend proportion:
Wherein:The gaseous fuel mass flow measured for gaseous fuel flow meter 5；
The liquid fuel mass flow measured for liquid fuel flowmeter 11；
Specific control method is as follows:
A. rotary engine operating mode is neat liquid fuel method of supplying, and automatically controlled ECU13 is according to gaseous fuel flow meter 5
With liquid fuel flowmeter 11 calculate gaseous fuel Blend proportion be η=0% when, indicate be used only liquid fuel nozzle 10 fired
Material supply, automatically controlled ECU13 judges the position of three-apexed rotor according to the signal of speed probe 17, the first spark plug 14 of control and the
The work of two spark plugs 15；
B. rotary engine work is in gas/liquid burning method of supplying, and automatically controlled ECU13 is according to gaseous fuel flow meter 5 and liquid
Fluid fuel flowmeter 11 calculates gaseous fuel Blend proportion when being 0 < η < 100%, indicates using first gas fuel nozzle 4 or the
Two gas fuel nozzles 7 and liquid fuel nozzle 10 carry out fuel supply, and automatically controlled ECU13 sentences according to the signal of speed probe 17
The position of disconnected three-apexed rotor controls the first spark plug 14 and the work of the second spark plug 15；
C. rotary engine work is in pure gas fuel method of supplying, and automatically controlled ECU13 is according to gaseous fuel flow meter 5 and liquid
Fluid fuel flowmeter 11 calculates gaseous fuel Blend proportion when being η=100%, indicates using first gas fuel nozzle 4 or the
Two gas fuel nozzles 7 carry out fuel supply, and automatically controlled ECU13 judges the position of three-apexed rotor according to the signal of speed probe 17
It sets, controls the first spark plug 14 or the work of the second spark plug 15.
The automatically controlled ECU13 is also according to the amount for calculating excess air ratio control air and fuel, the combustion mode choosing of realization
It selects, the excess air ratio:
Wherein:The air quality flow measured for air flow meter 2；
AFSt, gasFor the chemically correct fuel of gaseous fuel；
AFst,liquldFor the chemically correct fuel of liquid fuel；
Specific control method is as follows:
A. in the case where rotary engine operating mode is neat liquid fuel method of supplying, i.e., as η=0%, automatically controlled ECU13 is logical
The inlet for crossing control air and liquid fuel makes λ > 1, and air saves fuel than liquid fuel excess this moment, fires for gas
Expect insufficient combustion mode and fuel-saving combustion mode；
B. it works in rotary engine and burns under method of supplying in gas/liquid, i.e., as 0 < η < 100%, if passing through the first gas
Fluid fuel nozzle 4 and liquid fuel nozzle 10 carry out the supply of gas/liquid fuel, automatically controlled ECU13 by control air, gaseous fuel and
The inlet of liquid fuel makes λ≤1, and gaseous fuel is introduced into premix chamber 3 by first gas fuel nozzle 4, mixed with air
After conjunction is sufficiently mixed, then by air inlet pipe 1 into combustion chamber, fuel is sufficient at this time, realizes gaseous fuel homogeneous momentum mode, uses
In the combustion mode of engine calls power performance；If by second gas fuel nozzle 7 and liquid fuel nozzle 10 carry out gas/
The supply of liquid fuel, automatically controlled ECU13 make λ > 1 by the inlet of control air, gaseous fuel and liquid fuel, and gaseous fuel passes through
In 7 direct-injection combustion chamber of second gas fuel nozzle, the air of combustion chamber is more excessive than the summation of gaseous fuel and liquid fuel at this time,
Realize that gaseous fuel and liquid fuel portion mix the burning mould to partly-premixed transformation, for engine calls fuel economy
Formula；C. in rotary engine work under pure gas fuel method of supplying, i.e., as η=100%, if passing through first gas fuel
Nozzle 4 carries out gaseous fuel supply, and automatically controlled ECU13 makes λ≤1, gaseous fuel by controlling the inlet of air and gas fuel
It is introduced into premix chamber 3 by first gas fuel nozzle 4, after the mixing with air is sufficiently mixed, then is entered by air inlet pipe 1 and is fired
Room is burnt, fuel is sufficient at this time, realizes gaseous fuel homogeneous momentum mode, for the insufficient combustion mode of liquid fuel and requires dynamic
The combustion mode of power；If carrying out gaseous fuel supply by second gas fuel nozzle 7, automatically controlled ECU13 passes through control air
Make λ > 1 with the inlet of gaseous fuel, gaseous fuel passes through in 7 direct-injection combustion chamber of second gas fuel nozzle, at this time combustion chamber
Air than gaseous fuel excess, realize that gaseous fuel part is mixed to partly-premixed transformation, be used for the insufficient combustion of liquid fuel
Burning mode and the combustion mode for requiring economy.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (6)
1. a kind of gas/liquid fuel feed system of direct injection rotary engine, which is characterized in that including rotary engine, jet
System, spray system, air flow meter (2), gaseous fuel flow meter (5), liquid fuel flowmeter (11) and automatically controlled ECU
(13)；
The rotary engine includes cylinder body (20), combustion chamber and three-apexed rotor (19)；It is equipped in the cylinder body (20) by inclined
The three-apexed rotor (19) that innermost being axis (18) drives；The combustion chamber is between the cylinder body (20) and three-apexed rotor (19)；Institute
It states combustion chamber and the first combustion chamber (6), the second combustion chamber (9) and third combustion chamber (12) is divided by the three-apexed rotor (19), and
First combustion chamber (6), the second combustion chamber (9) and third combustion chamber (12) volume rotate with three-apexed rotor (19) and are changed；It is described
Eccentric crankshaft (18) is equipped with speed probe (17), for measuring eccentric crankshaft (18) revolving speed；Be equipped in the cylinder body (20) with
The exhaust pipe (8) of third combustion chamber (12) connection；
The spray system includes liquid fuel nozzle (10) and spark plug；The liquid fuel nozzle (10) is mounted on cylinder body
(20) it on, and is connected to the second combustion chamber (9)；Spark plug is equipped in second combustion chamber (9)；
The automatically controlled ECU (13) connect with spark plug, liquid fuel nozzle (10) and speed probe (17)；The gas ejecting system
Gaseous fuel is inputted into the first combustion chamber (6) by automatically controlled ECU (13) control；The outer surface of the three-apexed rotor (19) is set
There are pit (16)；The cross section of the pit (16) is approximately triangle；The pit (16) and the three-apexed rotor (19)
Outer surface arc transition, arc radius 8-10mm；The angle theta of pit (16) contour line is 120 °~128 °；
The gas ejecting system includes air inlet pipe (1), premix chamber (3) and first gas fuel nozzle (4)；The air inlet pipe (1) with
First combustion chamber (6) connection, the air inlet pipe (1) are equipped with premix chamber (3), installation first gas combustion on the premix chamber (3)
Expect nozzle (4)；The automatically controlled ECU (13) connect with first gas fuel nozzle (4)；Or the gas ejecting system includes the second gas
Fluid fuel nozzle (7), the second gas fuel nozzle (7) is mounted on cylinder body (20), and is connected to the first combustion chamber (6)；
The automatically controlled ECU (13) connect with second gas fuel nozzle (7),
The air flow meter (2) is mounted on air inlet pipe (1) inlet；The liquid fuel flowmeter (11) is mounted on liquid combustion
On the pipeline for expecting nozzle (10)；The gaseous fuel flow meter (5) be mounted on the pipeline of first gas fuel nozzle (4) or
On the pipeline of second gas fuel nozzle (7)；The air flow meter (2), gaseous fuel flow meter (5) and liquid fuel flow
Meter (11) is connect with automatically controlled ECU (13)；The automatically controlled ECU (13) controls gaseous fuel according to gaseous fuel Blend proportion and liquid fires
Material enters the amount of combustion chamber, has are as follows:
The gaseous fuel Blend proportion:
Wherein:For the gaseous fuel mass flow of gaseous fuel flow meter (5) measurement；
For the liquid fuel mass flow of liquid fuel flowmeter (11) measurement.
2. the gas/liquid fuel feed system of direct injection rotary engine according to claim 1, which is characterized in that described
Spark plug includes the first spark plug (14) and the second spark plug (15)；First spark plug (14) and the second spark plug (15) are pressed
It is distributed in the second combustion chamber (9) according to the axial direction of eccentric crankshaft (18), and is arranged symmetrically according to liquid fuel nozzle (10)；It is described
The distance between first spark plug (14) and the second spark plug (15) are 30~40mm；First spark plug (14) and the second fire
It is 25~35mm that Hua Sai (15) arrives liquid fuel nozzle (10) distance respectively.
3. the gas/liquid fuel feed system of direct injection rotary engine according to claim 1, which is characterized in that described
Liquid fuel nozzle (10) and the horizontal center line angle of cylinder body (20) are 45 °~60 °；The first gas fuel nozzle (4)
Injection direction and the angle of air inlet pipe (1) axis be 30 °~45 °；Or second gas fuel nozzle (7) injection direction
Horizontal center line angle with cylinder body (20) is 0 °~30 °.
4. the gas/liquid fuel feed system of direct injection rotary engine according to claim 1, which is characterized in that described
The gas of gas ejecting system is biogas or natural gas or hydrogen or oil gas；Liquid gasoline or diesel oil that the spray system sprays or
Kerosene or aviation oil or biodiesel or heavy oil.
5. a kind of control method of the gas/liquid fuel feed system of direct injection rotary engine, which is characterized in that automatically controlled ECU
(13) gaseous fuel is controlled according to gaseous fuel Blend proportion and liquid fuel enters the amount of combustion chamber, realize fuel method of supplying
Selection,
The gaseous fuel Blend proportion:
Wherein:For the gaseous fuel mass flow of gaseous fuel flow meter (5) measurement；
For the liquid fuel mass flow of liquid fuel flowmeter (11) measurement；
Specific control method is as follows:
A. rotary engine operating mode is neat liquid fuel method of supplying, and automatically controlled ECU (13) is according to gaseous fuel flow meter (5)
With liquid fuel flowmeter (11) calculate gaseous fuel Blend proportion be η=0% when, indicate be used only liquid fuel nozzle (10) into
The supply of row fuel, automatically controlled ECU (13) judge the position of three-apexed rotor according to the signal of speed probe (17), control the first spark
Fill in (14) and the second spark plug (15) work；
B. rotary engine work is in gas/liquid burning method of supplying, and automatically controlled ECU (13) is according to gaseous fuel flow meter (5) and liquid
Fluid fuel flowmeter (11) calculates gaseous fuel Blend proportion when being 0 < η < 100%, indicate using first gas fuel nozzle (4) or
Person's second gas fuel nozzle (7) and liquid fuel nozzle (10) carry out fuel supply, and automatically controlled ECU (13) is according to speed probe
(17) signal judges the position of three-apexed rotor, controls the first spark plug (14) and the second spark plug (15) work；
C. rotary engine work is in pure gas fuel method of supplying, and automatically controlled ECU (13) is according to gaseous fuel flow meter (5) and liquid
Fluid fuel flowmeter (11) calculates gaseous fuel Blend proportion when being η=100%, indicate using first gas fuel nozzle (4) or
Person's second gas fuel nozzle (7) carries out fuel supply, and automatically controlled ECU (13) judges triangle according to the signal of speed probe (17)
The position of rotor controls the first spark plug (14) or the second spark plug (15) work.
6. the control method of the gas/liquid fuel feed system of direct injection rotary engine according to claim 5, feature
It is, the automatically controlled ECU (13) is also according to the amount for calculating excess air ratio control air and fuel, the combustion mode choosing of realization
It selects, the excess air ratio:
Wherein:For the air quality flow of air flow meter (2) measurement；
AFst,gasFor the chemically correct fuel of gaseous fuel；
AFst,liquldFor the chemically correct fuel of liquid fuel；
Specific control method is as follows:
A. in the case where rotary engine operating mode is neat liquid fuel method of supplying, i.e., as η=0%, automatically controlled ECU (13) passes through
The inlet of control air and liquid fuel makes λ > 1, and air saves fuel than liquid fuel excess this moment, is used for gaseous fuel
Insufficient combustion mode and fuel-saving combustion mode；
B. it works in rotary engine and burns under method of supplying in gas/liquid, i.e., as 0 < η < 100%, if being fired by first gas
Expect that nozzle (4) and liquid fuel nozzle (10) carry out the supply of gas/liquid fuel, automatically controlled ECU (13) passes through control air, gaseous fuel
Make λ≤1 with the inlet of liquid fuel, gaseous fuel is introduced into premix chamber (3) by first gas fuel nozzle (4), with sky
After the mixing of gas is sufficiently mixed, then by air inlet pipe (1) into combustion chamber, fuel is sufficient at this time, realizes the punching of gaseous fuel homogeneous
Amount mode, the combustion mode for engine calls power performance；If being sprayed by second gas fuel nozzle (7) and liquid fuel
Mouth (10) carries out the supply of gas/liquid fuel, and automatically controlled ECU (13) makes λ by the inlet of control air, gaseous fuel and liquid fuel
> 1, gaseous fuel is by the way that in second gas fuel nozzle (7) direct-injection combustion chamber, the air of combustion chamber is than gaseous fuel and liquid at this time
The summation of fluid fuel is excessive, realizes that gaseous fuel and liquid fuel portion are mixed to partly-premixed transformation, is used for engine calls
The combustion mode of fuel economy；
C. in rotary engine work under pure gas fuel method of supplying, i.e., as η=100%, if being fired by first gas
Expect that nozzle (4) carry out gaseous fuel supply, automatically controlled ECU (13) makes λ≤1, gas by controlling the inlet of air and gas fuel
Fluid fuel is introduced into premix chamber (3) by first gas fuel nozzle (4), after the mixing with air is sufficiently mixed, then by into
Tracheae (1) enters combustion chamber, and fuel is sufficient at this time, realizes gaseous fuel homogeneous momentum mode, is used for the insufficient combustion of liquid fuel
Burning mode and the combustion mode for requiring dynamic property；It is automatically controlled if carrying out gaseous fuel supply by second gas fuel nozzle (7)
ECU (13) makes λ > 1 by controlling the inlet of air and gas fuel, and gaseous fuel is straight by second gas fuel nozzle (7)
It spraying in combustion chamber, the air of combustion chamber realizes that gaseous fuel part is mixed to partly-premixed transformation than gaseous fuel excess at this time,
For the insufficient combustion mode of liquid fuel and the combustion mode for requiring economy.
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