CN109681317A - A kind of water spray reduces by the zero nitrogen HC fuel spark ignition type zero-turn handset and its control method of cylinder temperature - Google Patents
A kind of water spray reduces by the zero nitrogen HC fuel spark ignition type zero-turn handset and its control method of cylinder temperature Download PDFInfo
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- CN109681317A CN109681317A CN201811648318.5A CN201811648318A CN109681317A CN 109681317 A CN109681317 A CN 109681317A CN 201811648318 A CN201811648318 A CN 201811648318A CN 109681317 A CN109681317 A CN 109681317A
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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
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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
- F02B53/02—Methods of operating
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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
- F02B53/10—Fuel supply; Introducing fuel to combustion space
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
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- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
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- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
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- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
- F02M25/028—Adding water into the charge intakes
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- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
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- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
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- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
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- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
-
- 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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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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)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The present invention devises the zero nitrogen HC fuel spark ignition type rotor machine and its control method of a kind of water spray reduction cylinder temperature, using the delivery temperature of engine, oxygen concentration and HC concentration as foundation, adjust the switch of EGR rate and water injector, control sprays into water and time in air flue, and being absorbed heat using water evaporation reduces the intake air temperature of engine.Simultaneously, the cooling water tank of condenser and engine is connected, when temperature in engine combustion room is lower than setting value, in water condensate storage to cooling water tank, cooling water as engine is recycled, when the temperature in air intake duct is greater than the set value, condensed water sprays into air intake duct and cools down to air inlet.Compared with prior art, controlling party hair of the present invention realizes a kind of zero nitrogen discharged engine, reduces temperature in air intake duct using moisture evaporation endothermic, and condenser and cooling water tank are connected, water in condenser is adjusted, there is certain novelty and application prospect.
Description
Technical field
The present invention provides the zero nitrogen HC fuel spark ignition type rotor machine control methods that a kind of water spray reduces cylinder temperature, belong to
In field of internal combustion engine.
Background technique
As environmental problem is increasingly by the attention of numerous people, various countries are also increasingly stringenter the monitoring of pollution.Vapour
Tail gas discharge has also been pulled to foreground in such a case, and each state all has launched relevant laws and regulations and carrys out restricting vehicle tail gas
Discharge.Therefore, it reduces engine consumption and discharge has become the mainstream research direction in Current internal combustion engines field.
Compared with reciprocating piston machine, rotary engine has that small in size, light-weight, structure is simple, and it is excellent that power to weight ratio is big etc.
Rotor machine is widely used in unmanned plane, military special type vehicle, marine corps's landing craft, spitkit by point, countries in the world
With the fields such as portable generator.However, rotor machine is there is also fuel economy difference and discharges the problems such as high, these is caused to ask
The main reason for topic is quick, the completely burned that the long and narrow chamber structure of rotor machine is unfavorable for fuel, and higher surface to volume ratio increases
Added wall surface quench breath the problem of and linear sealing form lead to higher leak rate etc..It is increasingly strict with emission regulation, turn
Sub- engine is also faced with the problem of energy-saving and emission-reduction.
The emission of rotor machine mainly has NOX, PM, HC, CO etc., NO in internal combustion engineXGeneration there are mainly two types of mode: heat
Power type and fuel type.In gasoline engine, NOXMain source be participate in burning air in nitrogen.Contain 21% in air
Oxygen and 79% nitrogen, the two occur in combustion chambers of internal combustion engines chemical reaction generate NOX, form the emission of internal combustion engine.
It, can be to avoid NO if the nitrogen in air removedXGeneration.But high temperature can be generated using pure oxygen, reduces the steady of burning
It is qualitative, and it is unfavorable for the quick release of heat, it is easy to produce pinking.So the cooling water tank of engine is connect with condenser,
Required water source is provided for condenser using cooling water tank, meanwhile, the water in condenser can also be stored in water tank as cooling
Water uses, and when the temperature is excessively high, condensed water, which sprays into engine inlets, reduces air inlet temperature in engine inlets, raising is started
The stability of machine burning.
Summary of the invention
In order to improve the emission performance of rotor internal-combustion engine and reduce temperature in air intake duct, prevent pinking caused by high temperature etc. from asking
Topic, the present invention provides the zero nitrogen HC fuel spark ignition type rotor machine control methods that a kind of water spray reduces cylinder temperature, reduce NO
The problems such as reducing cylinder temperature while discharge, avoiding pinking caused by high temperature.
The present invention solves the above problems and solves by the following technical programs:
The present invention devises a kind of zero nitrogen HC fuel spark ignition type rotor machine control method of water spray reduction cylinder temperature, tool
Body is related to water injector and its operation method, and device includes: HC fuel holding vessel (1), the outlet and oil pump (2) of holding vessel,
Fuel flow meter (3), the fuel nozzle (5) being mounted on air intake duct are connected in series, and it is dense successively to install HC on the exhaust pipe of engine
Spend sensor (15), waste gas circulating valve (14), condenser (12), temperature sensor (8), oxygen concentration sensor (7), pressure stabilizing mixing
Tank (6), oxygen successively pass through oxygen pipeline pressure reducing valve (10), oxygen flow adjuster after coming out in oxygen storage tank (11)
(9), it is mixed with cycle gas and enters combustion chamber after pressure stabilizing blending tank (6), gas flow adjuster is also installed on exhaust pipe
(16).Condenser is there are two after water outlet, and one is connected with cooling water tank of engine, and one is connected with water pump (13), and ECU (4) is logical
The working condition of signal control water pump (13) of excess temperature sensor (8), spark plug type cylinder pressure sensor (17) and charge amplify
Device (18) is engine ignition.
A kind of water spray as described above reduces by zero nitrogen HC fuel spark ignition type rotor machine control method of cylinder temperature, special
Sign is:
After rotary engine work, ECU (4) receives the tach signal transmitted from crankshaft, when revolving speed turns lower than idling
When fast, the HC concentration in exhaust duct is detected positioned at the HC concentration sensor (15) of exhaust duct, when HC concentration is less than M value, M is hair
Motivation coefficient of cyclic variation CoV is equal to HC concentration corresponding when 10%, opens waste gas circulating valve (14), and exhaust is made to enter mixing
Enter combustion chamber after gas vacuum tank (6) and the oxygen mix from oxygen delivery pipeline to burn, condenser is by exhaust gas at this time
In condensate moisture be stored into engine water tank, it is spare as cooling water, when the HC concentration in exhaust duct is greater than M, close useless
Gas circulating valve (14), and air flow meter (16) are opened, so that the exhaust gas for generation of burning at this time is directly discharged into atmosphere.ECU (4) root
According to oxygen concentration in cycle gas, starts signal to oxygen flow adjuster (9) and fuel flow meter (3), adjust oxygen and combustion
The conveying ratio of material so that air intake duct in peroxide concentration factor less than 1, the gaseous mixture of fuel and oxygen by dense combustion condition into
Row burning, realizes the quick start of engine.
When engine speed is when between idling speed and rated speed, ECU (4) adjusts oxygen flow meter (9) and hydrocarbon
The uninterrupted of class A fuel A flowmeter (3), so that peroxide concentration factor greater than 1, press by the gaseous mixture of fuel and oxygen in air intake duct
Lean conditions burn, and the HC concentration information in exhaust duct is passed to ECU by the HC concentration sensor (15) positioned at exhaust duct
(4), when HC concentration be less than M value when, open waste gas circulating valve (14), exhaust gas after condenser enter gaseous mixture vacuum tank (6) and
Enter in combustion chamber after oxygen mix from oxygen delivery pipeline and burns, meanwhile, the temperature sensing in exhaust duct
Device (8) detects the temperature of cycle gas, and when the temperature of circulating air in exhaust duct is greater than N value, N is that engine volumetric efficiency is lower than
Corresponding inlet temperature when 60%.Water pump (13) extracts the water in condenser out, sprays into air intake duct and cools down to air inlet,
When the temperature of cycle gas is lower than setting value N, water pump (13) stops working, and closes air intake duct water injector.Condenser at this time
(12) water in is restored into cooling water tank of engine.When to measure CH dense for the HC concentration sensor inspection (15) for being located at exhaust duct
When degree is higher than M value, gradually closes waste gas circulating valve (14) and slowly open air flow meter (16), so that the part that burning generates
Exhaust gas is directly discharged into atmosphere, until the CH concentration in exhaust duct is down to M, stablizes waste gas circulating valve (14) and air flow meter (16)
Opening and closing degree so that cycle gas stablizes the amount corresponding when CH concentration is down to M.ECU (4) by adjust cycle gas,
The oxygen concentration in engine inlets is adjusted in the factors such as oxygen flow, fuel injection amount, so that peroxide concentration factor is big
In 1, the gaseous mixture of fuel and oxygen burns by lean combustion mode.
When engine speed is between rated speed and maximum speed, closes waste gas circulating valve (14), fully open sky
Air-flow meter (16), the exhaust gas for generating burning are directly discharged into atmosphere.
When engine speed is greater than maximum speed, ECU (4) issues signal, stops the supply of fuel and oxygen, and terminates
Ignition signal is sent to spark plug (17), engine stop is made to work.
Peroxide concentration factor industry rudimentary knowledge, industry personnels can be according to rudimentary knowledge self-calibrations.In air intake duct
Peroxide concentration factor η=(VEO2+VO2)/VSTO2(VEO2For oxygen volume, V in waste gas circulationO2For provided in apparatus of oxygen supply
Oxygen volume, VSTO2For theoretical oxygen volume required for fuel combustion completely).Rated speed, maximum speed are in the industry
Rudimentary knowledge, rated speed refers to that the revolving speed of engine under nominal power, maximum speed refer under given conditions, and engine turns
The maximum value that speed can reach can damage engine in maximum (top) speed for a long time.
Detailed description of the invention
Structure and working principle diagram Fig. 1 of the invention
In figure: HC fuel holding vessel 1, the outlet of holding vessel and oil pump 2, fuel flow meter 3, ECU4, fuel nozzle 5,
Pressure stabilizing blending tank 6, oxygen concentration sensor 7, temperature sensor 8, oxygen flow adjuster 9, pressure reducing valve 10, oxygen storage tank 11,
Condenser 12, water pump 13, waste gas circulating valve 14, HC concentration sensor 15, gas flow adjuster 16, spark plug type cylinder pressure sensing
Device 17, charge amplifier 18
Specific embodiment
The present invention is described further with reference to the accompanying drawings and detailed description:
It include: HC fuel holding vessel (1), the outlet and oil pump (2) of holding vessel, fuel flow meter if Fig. 1 includes: device
(3), the fuel nozzle (5) being mounted on air intake duct is connected in series, and successively installs HC concentration sensor on the exhaust pipe of engine
(15), waste gas circulating valve (14), condenser (12), temperature sensor (8), oxygen concentration sensor (7), pressure stabilizing blending tank (6), oxygen
Gas successively passes through oxygen pipeline pressure reducing valve (10), oxygen flow adjuster (9) after coming out in oxygen storage tank (11), with circulation
Exhaust gas mixing enters combustion chamber after pressure stabilizing blending tank (6), also installs gas flow adjuster (16) on exhaust pipe.Condenser has
After two water outlets, one is connected with cooling water tank of engine, and one is connected with water pump (13), and ECU (4) passes through temperature sensor
(8) working condition of signal control water pump (13), spark plug type cylinder pressure sensor (17) are to start with charge amplifier (18)
Machine igniting.
After rotary engine work, ECU receives the tach signal transmitted from crankshaft, when revolving speed is less than idling speed
When 1200rpm, the HC concentration in exhaust duct is detected positioned at the HC concentration sensor (15) of exhaust duct, when HC concentration is less than
6000ppm is opened waste gas circulating valve (14), and exhaust is made to enter gaseous mixture vacuum tank (6) and the oxygen from oxygen delivery pipeline
Enter combustion chamber after mixing to burn, the condensate moisture in exhaust gas is stored into engine water tank by condenser at this time, as cold
But water is spare, when the HC concentration in exhaust duct is greater than M, closes waste gas circulating valve (14), and open air flow meter (16), makes
The exhaust gas for obtaining generation of burning at this time is directly discharged into atmosphere.ECU (4) is adjusted according to oxygen concentration in cycle gas to oxygen flow
Device (9) sends signal and adjusts the conveying capacity of oxygen so that air intake duct in peroxide concentration factor η control 0.7-0.9 it
Between, realize the quick start of engine.
When engine speed is between idling speed 1200rpm to rated speed 9000rpm, ECU (4) adjusts oxygen stream
The uninterrupted of meter (9) and HC fuel flowmeter (3) so that in air intake duct peroxide concentration factor control 1.2-1.5 it
Between, the HC concentration information in exhaust duct is passed to ECU (4) by the HC concentration sensor (15) positioned at exhaust duct, when HC concentration is small
It in 3000ppm, opens waste gas circulating valve (14), exhaust gas enters gaseous mixture vacuum tank (6) after condenser and conveys with from oxygen
Enter in combustion chamber after the oxygen mix of pipeline and burns, meanwhile, the temperature sensor (8) in exhaust duct detects circulation
The temperature of exhaust gas, when the temperature of cycle gas in exhaust duct is greater than 50 °, water pump (13) extracts the water in condenser out, sprays into
Air intake duct cools down to air inlet, when the temperature of cycle gas be lower than 50 ° of setting value when, water pump (13) stops working, close into
Air flue water injector.The water in condenser (12) is restored into cooling water tank of engine at this time.As the HC for being located at exhaust duct
When concentration sensor inspection (15) measures CH concentration higher than 3000ppm, gradually closes waste gas circulating valve (14) and slowly open air
Flowmeter (16), so that the portion that burning generates is directly discharged into atmosphere, until the CH concentration in exhaust duct is down to
3000ppm stablizes the opening and closing degree of waste gas circulating valve (14) and air flow meter (16), so that cycle gas is stablized in CH concentration
It is down to amount corresponding when 3000ppm, is mixed in gaseous mixture vacuum tank (6) by condenser (8) cooling exhaust gas with oxygen
Afterwards, into combustion chamber.
When engine speed is in rated speed 9000rpm to maximum speed 12000rpm, close waste gas circulating valve (14),
Air flow meter (16) are fully opened, the exhaust gas for generating burning is directly discharged into atmosphere.
When engine speed is higher than maximum speed 12000rmp, ECU (4) issues signal, stops the confession of fuel and oxygen
It answers, meanwhile, ECU (4) stops sending ignition signal to spark plug (17), and engine stop is made to work.
Peroxide concentration factor industry rudimentary knowledge, industry personnels can be according to rudimentary knowledge self-calibrations.In air intake duct
Peroxide concentration factor η=(VEO2+VO2)/VSTO2(VEO2For oxygen volume, V in waste gas circulationO2For provided in apparatus of oxygen supply
Oxygen volume, VSTO2For theoretical oxygen volume required for fuel combustion completely).
Claims (2)
1. a kind of water spray reduces by zero nitrogen HC fuel spark ignition type rotor machine of cylinder temperature, feature includes: HC fuel storage
Tank (1), the outlet and oil pump (2) of holding vessel, fuel flow meter (3), the fuel nozzle (5) being mounted on air intake duct series connection connect
It connects, HC concentration sensor (15), waste gas circulating valve (14), condenser (12), temperature sensing is successively installed on the exhaust pipe of engine
Device (8), oxygen concentration sensor (7), pressure stabilizing blending tank (6), oxygen successively pass through oxygen after coming out in oxygen storage tank (11)
Pipeline pressure reducing valve (10), oxygen flow adjuster (9) mix with cycle gas and enter combustion chamber after pressure stabilizing blending tank (6), row
Gas flow adjuster (16) are also installed on tracheae；There are two after water outlet, one is connected condenser with cooling water tank of engine, and one
It is a to be connected with water pump (13), working condition of the ECU (4) by signal control water pump (13) of temperature sensor (8), spark plug type
Cylinder pressure sensor (17) and charge amplifier (18) are engine ignition.
2. a kind of control side of zero nitrogen HC fuel spark ignition type rotor machine of water spray reduction cylinder temperature as described in claim 1
Method, it is characterised in that:
After rotary engine work, ECU receives the tach signal transmitted from crankshaft, when revolving speed is lower than engine idle rotational
When, the HC concentration in HC concentration sensor (15) the detection exhaust duct of exhaust duct, when HC concentration is less than M value, M is to start
Machine coefficient of cyclic variation CoV is equal to HC concentration corresponding when 10%, opens waste gas circulating valve (14), the exhaust gas for generating burning
Enter in pressure stabilizing blending tank (6) along circulating line, is fired with combustion chamber is entered after the oxygen mix of oxygen delivery pipeline
It burns, the condensate moisture in exhaust gas is stored into engine water tank by condenser at this time, and it is spare as cooling water, as the HC in exhaust duct
When concentration is greater than M, close waste gas circulating valve (14), and open air flow meter (16), so that the exhaust gas for generation of burning at this time is straight
Run in into atmosphere；ECU (4) sends signal to oxygen flow adjuster (9) and adjusts oxygen according to oxygen concentration in cycle gas
Conveying capacity so that the peroxide concentration factor in air intake duct, less than 1, the gaseous mixture of fuel and oxygen is fired by dense combustion condition
It burns, realizes the starting of engine；
When engine speed is when between idling speed and rated speed, ECU (4) adjusts oxygen flow meter (9) and hydro carbons fires
The uninterrupted of stream meter (3), so that peroxide concentration factor is greater than 1 in air intake duct, the gaseous mixture of fuel and oxygen is by thin
Condition is burnt, and the HC concentration information in exhaust duct is passed to ECU (4) by the HC concentration sensor (15) positioned at exhaust duct,
It when HC concentration is less than M value, opens waste gas circulating valve (14), exhaust gas enters gaseous mixture vacuum tank (6) and come from after condenser
Enter in combustion chamber after the oxygen mix of oxygen delivery pipeline and burns, meanwhile, the temperature sensor (8) in exhaust duct
The temperature for detecting cycle gas, when the temperature of circulating air in exhaust duct is greater than N value, N is engine volumetric efficiency when being 60%
Corresponding inlet temperature, water pump (13) extract the water in condenser out, spray into air intake duct and cool down to air inlet, work as circulation
When the temperature of exhaust gas is lower than setting value N, water pump (13) stops working, and closes air intake duct water injector；At this time in condenser (12)
Water be restored into cooling water tank of engine；It is higher than when the HC concentration sensor inspection (15) for being located at exhaust duct measures CH concentration
When M value, gradually closes waste gas circulating valve (14) and open air flow meter (16), so that the portion that burning generates directly is arranged
Enter atmosphere, until the CH concentration in exhaust duct is down to M, stablizes the opening and closing journey of waste gas circulating valve (14) and air flow meter (16)
Degree, so that cycle gas stablizes the amount corresponding when CH concentration is down to M；ECU (4) receives oxygen concentration sensor (7) transmitting
Oxygen concentration signal controls oxygen flow adjuster (9), oxygen concentration in engine inlets is adjusted, so that crossing oxygen concentration
Greater than 1, the gaseous mixture of fuel and oxygen burns coefficient η by lean combustion mode, by condenser (12) cooling exhaust gas
After being mixed in gaseous mixture vacuum tank (6) with oxygen, into combustion chamber；
When engine speed is between rated speed and maximum speed, closes waste gas circulating valve (14), fully open air stream
Meter (16), the exhaust gas for generating burning are directly discharged into atmosphere；
When engine speed is higher than maximum speed, ECU (4) issues signal, stops the supply of fuel and oxygen, meanwhile, ECU
(4) stop sending ignition signal to spark plug (17), engine stop is made to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648318.5A CN109681317A (en) | 2018-12-30 | 2018-12-30 | A kind of water spray reduces by the zero nitrogen HC fuel spark ignition type zero-turn handset and its control method of cylinder temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648318.5A CN109681317A (en) | 2018-12-30 | 2018-12-30 | A kind of water spray reduces by the zero nitrogen HC fuel spark ignition type zero-turn handset and its control method of cylinder temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109681317A true CN109681317A (en) | 2019-04-26 |
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| CN201811648318.5A Pending CN109681317A (en) | 2018-12-30 | 2018-12-30 | A kind of water spray reduces by the zero nitrogen HC fuel spark ignition type zero-turn handset and its control method of cylinder temperature |
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| CN111997746A (en) * | 2020-07-20 | 2020-11-27 | 北京工业大学 | Air inlet channel and direct injection composite hydrogen-doped gasoline fuel rotor machine and control method thereof |
| CN113006933A (en) * | 2021-03-12 | 2021-06-22 | 北京工业大学 | Cylinder cover opposite ignition rotor machine and control method thereof |
| CN113236416A (en) * | 2021-05-28 | 2021-08-10 | 湖南大学 | System and method for reducing fuel consumption of rotor engine |
| CN113389637A (en) * | 2021-06-29 | 2021-09-14 | 北京工业大学 | Air inlet humidifying quality adjusting hydrogen rotor machine and control method |
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Application publication date: 20190426 |