CN1740542A - Electronic fuel oil jetting controller and controlling method for double fuel engine - Google Patents
Electronic fuel oil jetting controller and controlling method for double fuel engine Download PDFInfo
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- CN1740542A CN1740542A CN 200510200421 CN200510200421A CN1740542A CN 1740542 A CN1740542 A CN 1740542A CN 200510200421 CN200510200421 CN 200510200421 CN 200510200421 A CN200510200421 A CN 200510200421A CN 1740542 A CN1740542 A CN 1740542A
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Abstract
The present invention discloses one kind of electronic fuel oil jetting controller and controlling method for double fuel engine. The double fuel engine includes diesel engine system and gas fuel supply system, and system controller with engine throttle valve position signal as reference for determining the load of the engine. The present invention determines the gas fuel jetting amount and diesel oil inputting amount based on the parameters of engine rotation speed, admission pressure and exhaust temperature, and the gas fuel is fed to the mixer via the 1-12 jetting valves successively opened to mix with air before being jetted to the engine and ignited with the diesel oil the diesel oil engine inputs. The present invention has the advantages of high control precision, easy flow control, simple structure, low manufacture cost, etc.
Description
Technical field:
The present invention relates to a kind of duel fuel engine electric injection system controlling method and device that is used for the dual-fuel automobile motor, belong to the dual-fuel automobile technical field of engines.
Background technique:
The principle of diesel oil-double fuel electric injection system allows internal-combustion engine with two kinds of fuel synchronous workings exactly.Diesel oil-natural gas double-fuel electric injection system can install the vaporized fuel supply system additional on existing diesel engine, single diesel engine is converted into duel fuel engine.Diesel oil becomes the pilot fuel that is used to light vaporized fuel under the compressive state and the oiling agent of parts.In present normally used diesel oil-natural gas double fuel engine, there is following problem:
One, aspect the control of diesel oil amount, generally all be the diesel injection amount to be controlled by mechanical mechanism restriction diesel fuel injection pump throttle position, therefore only can carry out limiting the quantity of of a certain value to the diesel injection amount, can not regulate the diesel oil fuel injection quantity according to the variation of load, its control accuracy is lower, and can not realize directly digital control.
Two, aspect vaporized fuel control
At present, vaporized fuel electric controlled injection valve used in the prior art mainly contains two classes, and a class is to use the existing electric-controlled fuel injector of petrol engine as fuel gas injection valve, and another kind of is the fuel gas injection valve that designs for combustion gas specially.First kind fuel gas injection valve is the gasoline electric-controlled fuel injector owing to what adopt, and the latus rectum of control combustion gas circulation is generally less, thereby can't satisfy the combustion gas needs than high power engine; Though and second class is the combustion gas specialized designs, ubiquity accuracy of manufacturing and is required height, makes problems such as difficulty, cost height; And the electromagnet in the existing electric controlled injection valve generally adopts thrust to make magnet control tapering valve, and thrust makes electromagnet not only exist many, the baroque problems of moving element, and because the thrust of electromagnet makes tapering valve and its outbreak produce bigger impact force easily, thereby also exist problems such as workability is lower, the easy damage of valve.And existing vaporized fuel supply system is not high enough to the control accuracy of injection of gaseous fuel amount, causes engine load to change when rapid, and the flow adjustment of vaporized fuel is quick inadequately.And when engine temperature was higher, the vaporized fuel supply system was prone to accidents.
Summary of the invention:
The objective of the invention is to: a kind of control accuracy height is provided, is easy to that flow adjustment, structure are simple, low cost of manufacture, safer duel fuel engine electric injection system controlling method and device, to overcome the deficiencies in the prior art.
The present invention is achieved in that duel fuel engine electric injection system controlling method of the present invention is, it comprises diesel engine system and gaseous state fuel supply system, it installs a SC system controller in diesel engine system, SC system controller is with the load foundation of engine oil door position signal for definite motor, and simultaneously according to engine speed, the parameter of engine charge pressure and engine exhaust temperature, determine the emitted dose of vaporized fuel and the input quantity of diesel oil, simultaneously control signal is delivered to the high-voltage switch gear valve of vaporized fuel supply system respectively, the throttle actuator of lower pressure switch valve and injection valve and diesel engine system, the vaporized fuel supply system is sent to vaporized fuel in 1～12 injection valve by high-voltage switch gear valve and lower pressure switch valve, injection valve is sent into vaporized fuel in the mixer with after the air mixing and is ejected in the motor again, is ejected into diesel oil ignited by the diesel engine system input of vaporized fuel in the motor and AIR MIXTURES.
Above-mentioned duel fuel engine electric injection system controlling method, when the vaporized fuel supply system is sent in mixer with air mixing by 1～12 injection valve vaporized fuel, according to required injection of gaseous fuel amount, open 1～12 injection valve respectively successively, promptly when required injection of gaseous fuel amount is low more, the injection valve quantity of opening is few more, and when required injection of gaseous fuel amount was high more, the injection valve quantity of opening was many more; Injection valve in the vaporized fuel supply system adopts the PWM-type injection valve.
Duel fuel engine electric injection system control gear of the present invention is, it comprises SC system controller (1), diesel engine system (2) and gaseous state fuel supply system (3), the vaporized fuel jar (4) of vaporized fuel supply system (3) is connected to mixer (8) by high-voltage switch gear valve (5), reduction valve (14), lower pressure switch valve (6) and injection valve (7), on mixer (8), be connected with turbosupercharger (9), and mixer (8) is connected to diesel engine system (2) by pipeline; On diesel engine system (2), be provided with speed probe (10) and temperature transducer (11), on turbosupercharger (9), be provided with pressure transducer (12), be provided with position transducer (13) on the throttle of diesel engine system (2), the signal conveys of speed probe (10), temperature transducer (11), pressure transducer (12) and position transducer (13) is to SC system controller (1); Injection valve (7) in the vaporized fuel supply system (3) is 1～12, and the output signal of SC system controller (1) is delivered to the throttle actuator (16) of diesel engine system (2) and high-voltage switch gear valve (5), lower pressure switch valve (6) and the injection valve (7) of gaseous state fuel supply system (3) respectively.
Above-mentioned duel fuel engine electric injection system control gear, between SC system controller (1) and throttle actuator (16), high-voltage switch gear valve (5) and lower pressure switch valve (6), also be provided with the sub-controller (15) that is used to control the vaporized fuel ratio, the output signal of SC system controller (1) is delivered to sub-controller (15) earlier, and the output signal of sub-controller (15) is delivered to the throttle actuator (16) of diesel engine system (2) and the high-voltage switch gear valve (5) and the lower pressure switch valve (6) of gaseous state fuel supply system (3) again; The turbosupercharger (9) of vaporized fuel supply system (3) is provided with the filter cleaner that filter precision is 0.3 μ (17); The injecting gaseous fuels injection pressure of each injection valve (7) in the vaporized fuel supply system (3) is 0.4Mpa.
Owing to adopted such scheme, the present invention is according to the engine operating parameter and the throttle position instruction of each sensor impression, software by SC system controller is determined Control Parameter, the vaporized fuel of control duel fuel engine and the emitted dose of diesel oil, and adopt digital control to the actuating device of diesel engine system and gaseous state fuel supply system.The present invention adopts the throttle actuator of SC system controller control available engine, throttle actuator control accelerator rod, or control the position of oil pump ratch by the control step motor, limiting the emitted dose of diesel oil, and increase or reduce the emitted dose of fuel oil according to change in rotational speed.Vaporized fuel is ejected into the intake duct of motor by vaporized fuel/air mixer because vaporized fuel has certain pressure and is injected in the mixer, when entering air stream, the vaporized fuel disturbance air, make to have the good mixing effect each other.In the vaporized fuel supply system, the present invention has adopted a plurality of injection valves to participate in the mode of work successively, thereby has improved the control accuracy of whole system work, and the flow adjustment of vaporized fuel also more fast, conveniently.In order to revise the influence of atmospheric pressure variation to engine performance, this system has adopted air inlet pressure sensor, and controller is revised the emitted dose of vaporized fuel, thereby obtained desirable air fuel ratio according to the variation of the force value of this sensor impression.For fear of the damage to motor, this system is provided with exhaust gas temperature sensor, is used for the working state of monitor engine.When engine exhaust temperature surpassed the trouble free service delivery temperature, system can automatically switch to mode of operation full diesel oil mode of operation, makes the use of motor safer.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 increases structural representation behind the sub-controller for the present invention.
Embodiment:
Embodiments of the invention: go up a vaporized fuel supply system (3) and the SC system controller (1) that a cover existing market sale is installed in existing diesel engine system (2), and between the high-voltage switch gear valve (5) of existing vaporized fuel supply system (3) and mixer (8), connect respectively and go up reduction valve (14), lower pressure switch valve (6) and injection valve (7), its SC system controller (1) preferably adopts 80196 microprocessors of the prior art as SC system controller, the vaporized fuel jar (4) of vaporized fuel supply system (3) is passed through high-voltage switch gear valve (5), reduction valve (14), lower pressure switch valve (6) and injection valve (7) are connected to mixer (8), because a reduction valve (14) has been installed in vaporized fuel supply system (3), can limit the jet pressure of vaporized fuel like this, guarantee the Security of each parts of vaporized fuel supply system (3); Go up a connection turbosupercharger (9) at mixer (8) then, and mixer (8) is connected to diesel engine system (2) by pipeline; Go up the temperature transducer (11) that installation is used to measure the speed probe (10) of engine speed and is used to measure engine exhaust temperature in diesel engine system (2), go up setting pressure sensor (12) in turbosupercharger (9), to be used to measure suction pressure, mounting point sensor (13) on the throttle of diesel engine system (2), with the signal conveys of speed probe (10), temperature transducer (11), pressure transducer (12) and position transducer (13) to SC system controller (1); The quantity that is installed in the injection valve (7) in the vaporized fuel supply system (3) generally is controlled in 1～12 the scope, the quantity of its injection valve (7) can be determined according to the watt level of diesel engine system (2), the power of diesel engine system (2) is big more, and required injection valve (7) is many more; Injection valve (7) can adopt the PWM-type injection valve of selling on the existing market, and this PWM-type injection valve adopts pulse signal control, and it is simple in structure, reliability is higher, be easy to the flow fuel adjustment; The output signal of SC system controller (1) is delivered to the throttle actuator (16) of diesel engine system (2) and high-voltage switch gear valve (5), lower pressure switch valve (6) and the injection valve (7) of gaseous state fuel supply system (3) respectively; In order to reach ideal control effect, a sub-controller (15) that is used to control the vaporized fuel ratio is installed between SC system controller (1) and throttle actuator (16), high-voltage switch gear valve (5) and lower pressure switch valve (6) again, make the output signal of SC system controller (1) be delivered to sub-controller (15) earlier, the output signal of sub-controller (15) is delivered to the throttle actuator (16) of diesel engine system (2) and the high-voltage switch gear valve (5) and the lower pressure switch valve (6) of gaseous state fuel supply system (3) again; Sub-controller (15) can adopt the MC68HC908GP32 processor of selling on the existing market, is specifically designed to handle the emitted dose of calculating vaporized fuel and diesel oil input motor.In order to guarantee the reliability of system unit, the turbosupercharger (9) of vaporized fuel supply system (3) goes up filter precision is installed is the filter cleaner (17) of 0.3 μ; And the injecting gaseous fuels injection pressure of each injection valve (7) in the vaporized fuel supply system (3) is set at 0.4Mpa.
When the present invention works, the engine oil door position signal that SC system controller (1) transports with position transducer (13) is a load foundation of determining motor, and simultaneously according to speed probe (10), the engine speed that temperature transducer (11) and pressure transducer (12) transport, the parameter of engine exhaust temperature and engine charge pressure, determine the emitted dose of vaporized fuel and the input quantity of diesel oil, simultaneously control signal is delivered to the high-voltage switch gear valve (5) of vaporized fuel supply system (3) respectively, reduction valve (14), the throttle actuator (16) of lower pressure switch valve (6) and injection valve (7) and diesel engine system (2), vaporized fuel supply system (3) is sent to vaporized fuel in 1～12 injection valve (7) by high-voltage switch gear valve (5) and lower pressure switch valve (6), injection valve (7) is sent into vaporized fuel in the mixer (8) with after the air mixing and is ejected in the motor again, is ejected into diesel oil ignited by diesel engine system (2) input of vaporized fuel in the motor and AIR MIXTURES.By the parameter signal that receives, according to the difference of load, the injection of gaseous fuel amount that the supply of the strict restriction of SC system controller (1) diesel oil and control are ejected into motor, the vaporized fuel substitution rate under maximum load can reach 80%.In order to improve the control accuracy of injection of gaseous fuel amount, 1～12 injection valve (7) in the vaporized fuel supply system (3) can be according to required injection of gaseous fuel amount, surpass the capacity of opened injection valve (7) when the injection of gaseous fuel amount after, open next injection valve (7) again, open injection valve (7) so respectively successively, promptly when required injection of gaseous fuel amount is low more, the injection valve of opening (7) quantity is few more, when required injection of gaseous fuel amount was high more, the injection valve of opening (7) quantity was many more.
By receiving the signal of each sensor, SC system controller (1) can accurately limit the supply of diesel oil and be ejected into the injection of gaseous fuel amount of motor.Owing to adopted pressure transducer (12), the variation of the suction pressure that is used to experience can be revised the emitted dose of vaporized fuel, obtains desirable air fuel ratio.For fear of damage to motor, also be provided with temperature transducer (11), be used for the working state of monitor engine.When engine exhaust temperature surpassed the trouble free service delivery temperature, system can automatically switch to mode of operation full diesel oil mode of operation.When full diesel oil mode of operation, it is identical with the mode of operation of existing diesel engine that the motor that apparatus of the present invention are installed can be controlled its mode of operation by SC system controller (1).
Claims (7)
1. EFI duel fuel engine electric injection system controlling method, it comprises diesel engine system and gaseous state fuel supply system, it is characterized in that: it installs a SC system controller in diesel engine system, SC system controller is with the load foundation of engine oil door position signal for definite motor, and simultaneously according to engine speed, engine charge pressure and engine exhaust temperature parameter, determine the emitted dose of vaporized fuel and the delivery volume of diesel oil, simultaneously control signal is delivered to the high-voltage switch gear valve of vaporized fuel supply system respectively, the throttle actuator of lower pressure switch valve and injection valve and diesel engine system, the vaporized fuel supply system is sent to vaporized fuel in 1～12 injection valve by high-voltage switch gear valve and lower pressure switch valve, injection valve is sent into vaporized fuel in the mixer with after the air mixing and is ejected in the motor again, is ejected into diesel oil ignited by the diesel engine system input of vaporized fuel in the motor and AIR MIXTURES.
2. duel fuel engine electric injection system controlling method according to claim 1, it is characterized in that: when the vaporized fuel supply system is sent in mixer with air mixing by 1～12 injection valve vaporized fuel, according to required injection of gaseous fuel amount, open 1～12 injection valve respectively successively, promptly when required injection of gaseous fuel amount is low more, the injection valve quantity of opening is few more, and when required injection of gaseous fuel amount was high more, the injection valve quantity of opening was many more.
3. duel fuel engine electric injection system controlling method according to claim 2 is characterized in that: the injection valve in the vaporized fuel supply system adopts the PWM-type injection valve.
4. one kind is used for the duel fuel engine electric injection system control gear of method according to claim 1, it comprises SC system controller (1), diesel engine system (2) and gaseous state fuel supply system (3), it is characterized in that: the vaporized fuel jar (4) of vaporized fuel supply system (3) is connected to mixer (8) by high-voltage switch gear valve (5), reduction valve (14), lower pressure switch valve (6) and injection valve (7), on mixer (8), be connected with turbosupercharger (9), and mixer (8) is connected to diesel engine system (2) by pipeline; On diesel engine system (2), be provided with speed probe (10) and temperature transducer (11), on turbosupercharger (9), be provided with pressure transducer (12), be provided with position transducer (13) on the throttle of diesel engine system (2), the signal conveys of speed probe (10), temperature transducer (11), pressure transducer (12) and position transducer (13) is to SC system controller (1); Injection valve (7) in the vaporized fuel supply system (3) is 1～12, and the output signal of SC system controller (1) is delivered to the throttle actuator (16) of diesel engine system (2) and high-voltage switch gear valve (5), lower pressure switch valve (6) and the injection valve (7) of gaseous state fuel supply system (3) respectively.
5. duel fuel engine electric injection system control gear according to claim 4, it is characterized in that: between SC system controller (1) and throttle actuator (16), high-voltage switch gear valve (5) and lower pressure switch valve (6), also be provided with the sub-controller (15) that is used to control the vaporized fuel ratio, the output signal of SC system controller (1) is delivered to sub-controller (15) earlier, and the output signal of sub-controller (15) is delivered to the throttle actuator (16) of diesel engine system (2) and the high-voltage switch gear valve (5) and the lower pressure switch valve (6) of gaseous state fuel supply system (3) again.
6. duel fuel engine electric injection system control gear according to claim 4 is characterized in that: the turbosupercharger (9) of vaporized fuel supply system (3) is provided with the filter cleaner that filter precision is 0.3 μ (17).
7. duel fuel engine electric injection system control gear according to claim 4 is characterized in that: the injecting gaseous fuels injection pressure of each injection valve (7) in the vaporized fuel supply system (3) is 0.4Mpa.
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| CN 200510200421 CN1740542A (en) | 2005-07-21 | 2005-07-21 | Electronic fuel oil jetting controller and controlling method for double fuel engine |
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| CN 200510200421 CN1740542A (en) | 2005-07-21 | 2005-07-21 | Electronic fuel oil jetting controller and controlling method for double fuel engine |
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| CN102182568A (en) * | 2011-03-29 | 2011-09-14 | 重庆长安汽车股份有限公司 | Injection pulse width control method for natural gas and gasoline dual-fuel engine |
| CN101443542B (en) * | 2006-05-16 | 2011-11-09 | 罗伯特.博世有限公司 | Device and process for controlling an internal combustion engine |
| CN102278215A (en) * | 2011-05-26 | 2011-12-14 | 周秀芬 | Electric-control double-fuel engine system |
| CN102536477A (en) * | 2012-02-27 | 2012-07-04 | 胡永军 | Multi-fuel multi-rail type engine fuel supply control system and control method thereof |
| CN102996268A (en) * | 2011-09-16 | 2013-03-27 | 十堰科纳汽车电器有限公司 | Automotive dual-fuel co-combustion method and control system |
| CN103670805A (en) * | 2012-09-13 | 2014-03-26 | 爱三工业株式会社 | Controller for engine |
| CN104033256A (en) * | 2014-05-06 | 2014-09-10 | 南京盖驰动力科技有限公司 | Control system and method of oil and gas dual-fuel engine with oil supplied by mechanical pump |
| CN104121102A (en) * | 2014-07-23 | 2014-10-29 | 山东大学 | Fuel feeding system of micro diesel oil ignition direct-injection natural gas engine and control method thereof |
| CN104251160A (en) * | 2014-07-30 | 2014-12-31 | 江苏宁工重机股份有限公司 | Electronic control system for dual-fuel engine |
| CN104454189A (en) * | 2014-12-19 | 2015-03-25 | 中国汽车工程研究院股份有限公司 | Double-fuel control method for high-pressure common-rail fuel injection system |
| CN104454188A (en) * | 2014-10-30 | 2015-03-25 | 长城汽车股份有限公司 | Gasoline injection amount control method and system for dual-fuel engine |
| CN104481711A (en) * | 2014-11-05 | 2015-04-01 | 株洲南车时代电气股份有限公司 | Method for controlling dual-fuel locomotive |
| CN105298671A (en) * | 2015-11-19 | 2016-02-03 | 山东大学 | Engine micro diesel ignition natural gas equivalent weight air combustion ratio combustion system and control method |
| CN105443251A (en) * | 2015-12-04 | 2016-03-30 | 长安大学 | Fuel supply control method of electric control methanol-diesel dual-fuel engine for vehicle |
| CN105649799A (en) * | 2014-11-17 | 2016-06-08 | 迪瑞普技术（北京）有限公司 | Dual-fuel control system of diesel engine |
| CN105683535A (en) * | 2013-10-10 | 2016-06-15 | 卡明斯公司 | Fuel control for dual fuel engines |
| CN106054791A (en) * | 2016-06-02 | 2016-10-26 | 国网山东省电力公司蓬莱市供电公司 | PLC-based low-voltage safety control device |
| CN109057978A (en) * | 2018-06-25 | 2018-12-21 | 重庆科克发动机技术有限公司 | A kind of control system of dual fuel engine |
| CN110925107A (en) * | 2019-12-20 | 2020-03-27 | 潍柴西港新能源动力有限公司 | Fuel closed-loop control method for gas power generation engine |
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- 2005-07-21 CN CN 200510200421 patent/CN1740542A/en active Pending
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| CN101443542B (en) * | 2006-05-16 | 2011-11-09 | 罗伯特.博世有限公司 | Device and process for controlling an internal combustion engine |
| CN102182568B (en) * | 2011-03-29 | 2013-01-23 | 重庆长安汽车股份有限公司 | Injection pulse width control method for natural gas and gasoline dual-fuel engine |
| CN102182568A (en) * | 2011-03-29 | 2011-09-14 | 重庆长安汽车股份有限公司 | Injection pulse width control method for natural gas and gasoline dual-fuel engine |
| CN102278215A (en) * | 2011-05-26 | 2011-12-14 | 周秀芬 | Electric-control double-fuel engine system |
| CN102996268B (en) * | 2011-09-16 | 2015-07-01 | 十堰科纳汽车电器有限公司 | Automotive dual-fuel co-combustion method and control system |
| CN102996268A (en) * | 2011-09-16 | 2013-03-27 | 十堰科纳汽车电器有限公司 | Automotive dual-fuel co-combustion method and control system |
| CN102536477A (en) * | 2012-02-27 | 2012-07-04 | 胡永军 | Multi-fuel multi-rail type engine fuel supply control system and control method thereof |
| CN102536477B (en) * | 2012-02-27 | 2015-09-16 | 胡永军 | Multi fuel multi-rail type engine fuel supply control system and controlling method |
| CN103670805A (en) * | 2012-09-13 | 2014-03-26 | 爱三工业株式会社 | Controller for engine |
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| CN105683535B (en) * | 2013-10-10 | 2019-12-03 | 卡明斯公司 | Fuel for dual fuel engine controls |
| CN104033256A (en) * | 2014-05-06 | 2014-09-10 | 南京盖驰动力科技有限公司 | Control system and method of oil and gas dual-fuel engine with oil supplied by mechanical pump |
| CN104121102A (en) * | 2014-07-23 | 2014-10-29 | 山东大学 | Fuel feeding system of micro diesel oil ignition direct-injection natural gas engine and control method thereof |
| CN104251160A (en) * | 2014-07-30 | 2014-12-31 | 江苏宁工重机股份有限公司 | Electronic control system for dual-fuel engine |
| CN104454188B (en) * | 2014-10-30 | 2017-12-26 | 长城汽车股份有限公司 | Dual fuel engine gasoline injection amount control method and control system |
| CN104454188A (en) * | 2014-10-30 | 2015-03-25 | 长城汽车股份有限公司 | Gasoline injection amount control method and system for dual-fuel engine |
| CN104481711A (en) * | 2014-11-05 | 2015-04-01 | 株洲南车时代电气股份有限公司 | Method for controlling dual-fuel locomotive |
| CN104481711B (en) * | 2014-11-05 | 2017-01-25 | 株洲南车时代电气股份有限公司 | Method for controlling dual-fuel locomotive |
| CN105649799A (en) * | 2014-11-17 | 2016-06-08 | 迪瑞普技术（北京）有限公司 | Dual-fuel control system of diesel engine |
| CN104454189A (en) * | 2014-12-19 | 2015-03-25 | 中国汽车工程研究院股份有限公司 | Double-fuel control method for high-pressure common-rail fuel injection system |
| CN105298671A (en) * | 2015-11-19 | 2016-02-03 | 山东大学 | Engine micro diesel ignition natural gas equivalent weight air combustion ratio combustion system and control method |
| CN105443251A (en) * | 2015-12-04 | 2016-03-30 | 长安大学 | Fuel supply control method of electric control methanol-diesel dual-fuel engine for vehicle |
| CN105443251B (en) * | 2015-12-04 | 2017-11-14 | 长安大学 | A kind of automobile-used automatically controlled methanol diesel-oil dual fuel engine fuel supply control method |
| CN106054791A (en) * | 2016-06-02 | 2016-10-26 | 国网山东省电力公司蓬莱市供电公司 | PLC-based low-voltage safety control device |
| CN109057978A (en) * | 2018-06-25 | 2018-12-21 | 重庆科克发动机技术有限公司 | A kind of control system of dual fuel engine |
| CN110925107A (en) * | 2019-12-20 | 2020-03-27 | 潍柴西港新能源动力有限公司 | Fuel closed-loop control method for gas power generation engine |
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