CN1370917A - Fuel gas flow rate controlling method and controller for engine - Google Patents
Fuel gas flow rate controlling method and controller for engine Download PDFInfo
- Publication number
- CN1370917A CN1370917A CN02113493A CN02113493A CN1370917A CN 1370917 A CN1370917 A CN 1370917A CN 02113493 A CN02113493 A CN 02113493A CN 02113493 A CN02113493 A CN 02113493A CN 1370917 A CN1370917 A CN 1370917A
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- gas
- solenoid valve
- fuel
- motor
- flow rate
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The present invention discloses a fuel gas flow rate controlling method and a controller for engine with natural gas or other fuel gas or fuel oil and fuel gas as fuel and has at least two parallel connected solenoid valves in its fuel gas feeding path to control flow rate, and the flow rate in the path is determined by the combined open-close state of the solenoid valves. The driving signal for the solenoid valve may be low level one, high level one or digital pulse one. It has the advantages of high flow rate controlling precision and capacity of meeting the fuel demand of engine in different load.
Description
The present invention relates to a kind of being used for is the motor of fuel or is the engine gas flow control method and the device of the duel fuel engine of fuel with fuel oil and combustion gas with rock gas or other combustion gas, belongs to the fuel gas technical field of engines.
At present, two kinds of methods of the general employing of the gas flow of fuel gas motor of the prior art control, a kind of is to adopt the proportional electromagnetic valve of a big latus rectum to come the aperture of control valve to reach the purpose of control gas flow by given ratio-voltage; Another kind method is that the aperture that adopts stepper motor to control vent valve reaches the purpose of controlling gas flow.Though these two kinds of methods are simple, motor all requires valve to have the latus rectum of big flow to the needs of fuel when satisfying full load, this large-capacity valve, because its aperture is all bigger, therefore often its control accuracy is all poor, can not satisfy the accurate control to gas flow.
The objective of the invention is: provide a kind of gas flow control accuracy higher, and can satisfy under gas engine maximum load and any load condition fuel gas flow rate controlling method and device thereof to the motor of fuel gas demand.
The present invention is achieved in that the fuel gas flow rate controlling method of motor of the present invention is: it comprises the flow that adopts the electromagnetic valve gaseous fuel, but on the combustion gas transfer passage of rock gas or other fuel gas motor, adopt two or more electromagnetic valve gas flows at least, each solenoid valve is parallel with one another on the combustion gas transfer passage, in the unit time size of gas flow by each solenoid valve at this moment between in the switching assembled state determine, each solenoid valve can be operated in and cut out, three kinds of states of standard-sized sheet and pulse duration modulation, the driving electrical signal of each solenoid valve is a low level, three kinds of drive signals of high level and digital pulsewidth modulation signal, when the driving electrical signal is low level, closed electromagnetic valve, when the driving electrical signal is high level, the solenoid valve standard-sized sheet, when the driving electrical signal is digital pulse signal, solenoid valve is operated in the pulse duration modulation state, and the switching of solenoid valve is controlled by pulse signal under modulation condition; Under normal conditions, three electromagnetic valve gas flows preferably in parallel on the combustion gas transfer passage.
The gas flow control device of motor of the present invention is: it comprises solenoid valve (1) and gives the combustion gas gas-entered passageway (2) and the combustion gas outlet passageway (3) of motor delivery of fuel gas, two or more solenoid valves (1) at least that are equipped with in parallel between gas-entered passageway (2) and outlet passageway (3), gas-entered passageway (2) can be connected with outlet passageway (3) by the valve of each solenoid valve (1); Its gas-entered passageway (2) and outlet passageway (3) are located in the same housing (4), and in housing (4), be provided with the combination gas air feed channel (5) and the blast tube (6) that can be connected with the intake duct on the motor, blast tube (6) is communicated with outlet passageway (3) with combination gas air feed channel (5), be connected with suction tude joint (7) on the port of gas-entered passageway (2).
Owing to adopted technique scheme, the present invention compared with prior art, because the present invention adopts several solenoid valves to be in parallel to control gas flow, therefore under the situation of the big flow of combustion gas, can adopt the solenoid valve of less latus rectum to control, because the opening ratio of the solenoid valve of each little latus rectum is less, thereby in low level, each solenoid valve quick acting flexibly and accurately under three kinds of drive signals of high level and digital pulse signal, and can finely tune control to the flow of combustion gas, thus the present invention to have flow control accuracy higher, and can satisfy the advantage of fuel gas demand under gas engine maximum load and any load condition.
Accompanying drawing 1 is the structural representation of apparatus of the present invention;
Accompanying drawing 2 is the A-A cross-sectional schematic of accompanying drawing 1;
Schematic representation when accompanying drawing 3 uses for apparatus of the present invention.
The component names of each sequence number is respectively in accompanying drawing 3: (8) gaseous-pressure sensor, (9) fuel gas temperature sensor, (10) air inlet pressure sensor, (11) intake air temperature sensor, (12) speed probe, (13) throttle position switch, (14) exhaust gas temperature sensor, (15) gas cylinder, (16) high pressure filter cleaner, (17) gas pressure reduction system, (18) engine inlets, (19) motor, (20) engine exhaust pipe, (21) high-pressure air pipe, (22) low pressure tracheae, ECU is an electronic controller, SC is the drive signal follower, and these parts all are the finished product of prior art.
Embodiments of the invention: on the combustion gas transfer passage of rock gas or other fuel gas motor, adopt two or more little bare sizing electro-magnetic valves to control gas flow at least, each solenoid valve is parallel with one another on the combustion gas transfer passage, the size of gas flow in its unit time is determined by the switching assembled state of each solenoid valve in the unit time, adopt conventional low level, three kinds of electrical signal of high level and digital pulse signal are as the drive signal of each solenoid valve, make each solenoid valve when its driving electrical signal is low level, solenoid valve is for cutting out, when its driving electrical signal is high level, its solenoid valve is a standard-sized sheet, when its driving electrical signal was digital pulse signal, the switching working state of its solenoid valve was modulated by the drive pulse signal width; Under normal conditions, three solenoid valves preferably in parallel are controlled gas flow and are got final product on the combustion gas transfer passage.During its device of concrete making, its solenoid valve (1) can adopt the finished product of selling on the market to assemble, gas-entered passageway (2) and outlet passageway (3) are produced in the same housing (4), and in housing (4), produce a combination gas air feed channel (5) that can be connected and a blast tube (6) with the intake duct on the motor, blast tube (6) can be communicated with outlet passageway (3) with combination gas air feed channel (5), on the port of gas-entered passageway (2), connect a suction tude joint (7), between gas-entered passageway (2) and outlet passageway (3) according to employed engine power situation two or more solenoid valves (1) at least of loading onto in parallel, be installed in parallel three solenoid valves (1) in the ordinary course of things and get final product, gas-entered passageway (2) can be connected with outlet passageway (3) by the valve of each solenoid valve (1).
Adopt when of the present invention, device of the present invention is installed on the existing gas engine (19), when motor (19) moves, after natural gas via high pressure filter cleaner (16) in its gas cylinder (15) filters, be reduced to the pressure of setting by gas pressure reduction system (17), be transported to suction tude joint (7) then, engine operating parameter and throttle position instruction that while ECU electronic controller is experienced according to each sensor, calculate combustion gas requirement required under the present engine normal working, determine the mode of operation of three solenoid valves (1) then according to the size of required combustion gas, to be the control signal sent of ECU control three solenoid valves (1) respectively by drive signal follower SC is operated in and closes, under standard-sized sheet or three kinds of mode of operations of pulse signal width modulation, its gas quantity is determined by the combined situation of three solenoid valves (1), behind quantitative combustion gas process combination gas air feed channel (5) and air mixing, be transported in the motor (19) by engine inlets (18) again, thereby guarantee the proper functioning of motor.
Claims (4)
1, a kind of fuel gas flow rate controlling method of motor, it comprises the flow that adopts the electromagnetic valve gaseous fuel, it is characterized in that: on the combustion gas transfer passage of rock gas or other fuel gas motor, adopt two or more electromagnetic valve gas flows at least, each solenoid valve is parallel with one another on the combustion gas transfer passage, in the unit time size of gas flow by each solenoid valve at this moment between in the switching assembled state determine, each solenoid valve can be operated in and cut out, three kinds of states of standard-sized sheet and pulse duration modulation, the driving electrical signal of each solenoid valve is a low level, three kinds of drive signals of high level and digital pulsewidth modulation signal, when the driving electrical signal is low level, closed electromagnetic valve, when the driving electrical signal is high level, the solenoid valve standard-sized sheet, when the driving electrical signal is digital pulse signal, solenoid valve is operated in the pulse duration modulation state, and the switching of solenoid valve is controlled by pulse signal under modulation condition.
2, the fuel gas flow rate controlling method of motor according to claim 1 is characterized in that: three electromagnetic valve gas flows preferably in parallel on the combustion gas transfer passage.
3, a kind of gas flow control device of motor, it comprises solenoid valve (1) and combustion gas gas-entered passageway (2) and combustion gas outlet passageway (3), it is characterized in that: two or more solenoid valves (1) at least that are equipped with in parallel between gas-entered passageway (2) and outlet passageway (3), gas-entered passageway (2) can be connected with outlet passageway (3) by the valve of each solenoid valve (1).
4, the gas flow control device of motor according to claim 3, it is characterized in that: gas-entered passageway (2) and outlet passageway (3) are located in the same housing (4), and in housing (4), be provided with the combination gas air feed channel (5) and the blast tube (6) that can be connected with the intake duct on the motor, blast tube (6) is communicated with outlet passageway (3) and combination gas air feed channel (5), is connected with suction tude joint (7) on the port of gas-entered passageway (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02113493A CN1370917A (en) | 2002-03-21 | 2002-03-21 | Fuel gas flow rate controlling method and controller for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02113493A CN1370917A (en) | 2002-03-21 | 2002-03-21 | Fuel gas flow rate controlling method and controller for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1370917A true CN1370917A (en) | 2002-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02113493A Pending CN1370917A (en) | 2002-03-21 | 2002-03-21 | Fuel gas flow rate controlling method and controller for engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN1370917A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825042A (en) * | 2010-03-25 | 2010-09-08 | 北京大学 | Pulse detonation engine (PDE) magnetic valve high frequency oil supply and ignition system |
| CN104534149A (en) * | 2014-12-11 | 2015-04-22 | 贵州红林机械有限公司 | Control assembly for sanitary interceptor |
| CN104712875A (en) * | 2013-12-12 | 2015-06-17 | 中国科学院大连化学物理研究所 | Rapid flow control valve set based on PWM and PCM technologies and control method |
| CN104850143A (en) * | 2015-06-04 | 2015-08-19 | 成都昶艾电子科技有限公司 | Flow ratio control device based on electromagnetic valves and implementation method thereof |
-
2002
- 2002-03-21 CN CN02113493A patent/CN1370917A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825042A (en) * | 2010-03-25 | 2010-09-08 | 北京大学 | Pulse detonation engine (PDE) magnetic valve high frequency oil supply and ignition system |
| CN104712875A (en) * | 2013-12-12 | 2015-06-17 | 中国科学院大连化学物理研究所 | Rapid flow control valve set based on PWM and PCM technologies and control method |
| CN104534149A (en) * | 2014-12-11 | 2015-04-22 | 贵州红林机械有限公司 | Control assembly for sanitary interceptor |
| CN104850143A (en) * | 2015-06-04 | 2015-08-19 | 成都昶艾电子科技有限公司 | Flow ratio control device based on electromagnetic valves and implementation method thereof |
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