CN202441501U - Air-fuel ratio control system for gas engine - Google Patents
Air-fuel ratio control system for gas engine Download PDFInfo
- Publication number
- CN202441501U CN202441501U CN2012200756161U CN201220075616U CN202441501U CN 202441501 U CN202441501 U CN 202441501U CN 2012200756161 U CN2012200756161 U CN 2012200756161U CN 201220075616 U CN201220075616 U CN 201220075616U CN 202441501 U CN202441501 U CN 202441501U
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- Prior art keywords
- gas
- air
- ecu
- fuel
- control valve
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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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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model discloses an air-fuel ratio control system for a gas engine. The engine is provided with an air inlet main pipe and an air exhaust main pipe, and further comprises an air-fuel gas mixer, a mixed gas control valve, a fuel gas restrictor, an ECU (Electronic Control Unit) and a temperature sensor, wherein the air-fuel gas mixer is provided with two gas inlets and a mixed gas outlet; the gas inlets are connected with a fuel gas pipe and an air pipe respectively; the mixed gas outlet is connected with the other end of the air inlet main pipe which is correspondingly connected with the engine; the mixed gas control valve is arranged on the air inlet main pipe; the fuel gas restrictor is arranged on the fuel gas pipe; the temperature sensor is arranged on the air exhaust main pipe; the ECU is electrically connected with the mixed gas control valve, the fuel gas restrictor and the temperature sensor respectively; the temperature sensor is used for acquiring an exhaust temperature and transmitting a feedback signal to the ECU; the ECU is used for receiving a signal, processing the received signal into a data signal, comparing with a preformed MAP of the ECU, transmitting a control signal and feeding the control signal back to the mixed gas control valve and the fuel gas restrictor to control the air-fuel ratio and the temperature of exhaust waste gas. According to the air-fuel ratio control system, the problem of incapability of regulating the air-fuel ratio according to the change of an engine gas source or poor air-fuel ratio control reliability existing in the conventional gas engine is solved.
Description
Technical field
The utility model relates to a kind of gas engine component technical field, particularly a kind of gas engine auxiliary fuel supply-system.
Background technique
Energy-saving and emission-reduction are development trends of internal-combustion engine industry, and the exploitation gas engine can effectively be controlled the noxious emission and the carbon emission of motor.The air/fuel ratio control method of China's gas engine adopts simple proportional formula mixer or exhaust oxygen content feedback.Can not be unfavorable for the control of engine emission and the utilization of the energy according to power and the variation adjustment combustion gas of source of the gas and the air inlet ratio of air of motor though the proportion expression mixer is simple in structure; Exhaust oxygen content feedback can lose efficacy after sensor is poisoned, and one of predominant use of gas engine is the marsh gas power generation project, because working environment often causes lambda sensor to lose efficacy.
Summary of the invention
In view of this, the purpose of the utility model provides a kind of gas engine auxiliary fuel supply-system, and it can solve existing gas engine can not be according to the variation adjustment air fuel ratio of motor source of the gas or the problem of air fuel ratio control reliability difference.
To achieve these goals, the utility model adopts following technological scheme:
A kind of gas engine auxiliary fuel supply-system; Wherein be useful on to the intake manifold of engine charge on the motor and be used for the exhaust manifold of combustion gas, it also includes air fuel gas mixer, mixture control valve, combustion gas closure, ECU, temperature transducer; The air fuel gas mixer has two gas inlets and a mixed gas outlet, and wherein two gas inlets connect fuel tube and air duct respectively, and mixed gas outlet connects the intake manifold corresponding to the other end that links to each other with motor; The mixture control valve is installed on the intake manifold; The combustion gas closure is located on the fuel tube; Temperature transducer is installed on the exhaust manifold; ECU is electrically connected with mixture control valve, combustion gas closure and temperature transducer respectively; Temperature transducer is gathered delivery temperature and is sent feedback signal to ECU; ECU receives signal and is treated to data-signal, and contrasts with the prefabricated MAP figure of ECU, sends control signal; And control signal fed back to mixture control valve and combustion gas closure, and then the temperature of control air fuel ratio and combustion gas.
Further, said air duct inlet end connects a gas compressor outlet side, and the inlet end of gas compressor is provided with air intake duct, and compressorshaft is provided with turbine box, and turbine box links to each other with exhaust manifold, and turbine box is provided with the turbine exhaust pipe that communicates with exhaust manifold.
Further, air duct is provided with intercooler.
The beneficial effect of the utility model:
Aperture through delivery temperature feedback control gas control valve closure; Realized adjusting combustion gas and AIR Proportional in the mixed gas according to the power of motor and the variation of source of the gas; This gas engine air/fuel ratio control method has the high advantage of reliability, adopts this air/fuel ratio control method to help improving gas engine power, reliability and reduces noxious gas emission.
Description of drawings
Fig. 1 is the selected example structure schematic representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described, following explanation only is exemplary, does not limit the protection domain of the utility model.
As shown in Figure 1; A kind of gas engine auxiliary fuel supply-system; Wherein be useful on to the intake manifold 7 of motor 5 air inlets on the motor 5 and be used for the exhaust manifold 4 of combustion gas, it also includes air fuel gas mixer 8, mixture control valve 9, combustion gas closure 10, ECU12 and temperature transducer 13; Air fuel gas mixer 8 has two gas inlets and a mixed gas outlet, and wherein two gas inlets connect fuel tube 11 and air duct 14 respectively, and mixed gas outlet connects intake manifold 7 corresponding to the other end that links to each other with motor 5; Mixture control valve 9 is installed on the intake manifold 7; Combustion gas closure 10 is located on the fuel tube 11; Temperature transducer 13 is installed on the exhaust manifold 4; ECU12 is electrically connected with mixture control valve 9, combustion gas closure 10 and temperature transducer 13 respectively; Temperature transducer 13 is gathered delivery temperature and is sent feedback signal to ECU; ECU receives signal and is treated to data-signal, and contrasts with the prefabricated MAP figure of ECU, sends control signal; And control signal fed back to mixture control valve 9 and combustion gas closure 10, and then the temperature of control air fuel ratio and combustion gas.
Among the utility model embodiment; Said air duct 14 inlet ends connect a gas compressor 3 outlet sides; The inlet end of gas compressor 3 is provided with air intake duct 15; 3 of gas compressors are provided with turbine box 2, and turbine box 2 links to each other with exhaust manifold 4, and turbine box 2 is provided with the turbine exhaust pipe 1 that communicates with exhaust manifold 4.
Among the utility model embodiment, air duct 14 is provided with intercooler 6, can improve the scavenging efficiency of motor, and intercooler 6 can place the front end or the rear end of air fuel gas mixer 8 during as installed.
The utility model working principle: the delivery temperature that collects when temperature transducer 13; When being higher than the numerical value among the MAP figure; ECU sends the signal that reduces aperture to combustion gas closure 10; Send the signal that increases aperture to mixture control valve 9, improve the air fuel ratio of the mixed gas that gets into motor, thereby the delivery temperature of motor is descended.
Explanation is at last; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model; And not breaking away from the aim and the scope of the utility model technological scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (3)
1. gas engine auxiliary fuel supply-system; Wherein be useful on to the intake manifold (7) of motor (5) air inlet on the motor (5) and be used for the exhaust manifold (4) of combustion gas, it is characterized in that: it also includes air fuel gas mixer (8), mixture control valve (9), combustion gas closure (10), ECU (12), temperature transducer (13); Air fuel gas mixer (8) has two gas inlets and a mixed gas outlet; Wherein two gas inlets connect fuel tube (11) and air duct (14) respectively, and mixed gas outlet connects intake manifold (7) corresponding to the other end that links to each other with motor (5); Mixture control valve (9) is installed on the intake manifold (7); Combustion gas closure (10) is located on the fuel tube (11); Temperature transducer (13) is installed on the exhaust manifold (4); ECU (12) is electrically connected with mixture control valve (9), combustion gas closure (10) and temperature transducer (13) respectively; Temperature transducer (13) is gathered delivery temperature and is sent feedback signal to ECU; ECU receives signal and is treated to data-signal, and contrasts with the prefabricated MAP figure of ECU, sends control signal; And control signal fed back to mixture control valve (9) and combustion gas closure (10), and then the temperature of control air fuel ratio and combustion gas.
2. according to claim 1 gas engine auxiliary fuel supply-system; It is characterized in that: said air duct (14) inlet end connects a gas compressor (3) outlet side; The inlet end of gas compressor (3) is provided with air intake duct (15); Gas compressor (3) axle is provided with turbine box (2), and turbine box (2) links to each other with exhaust manifold (4), and turbine box (2) is provided with the turbine exhaust pipe (1) that communicates with exhaust manifold (4).
3. according to claim 1 or 2 gas engine auxiliary fuel supply-systems, it is characterized in that: air duct (14) is provided with intercooler (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200756161U CN202441501U (en) | 2012-03-02 | 2012-03-02 | Air-fuel ratio control system for gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200756161U CN202441501U (en) | 2012-03-02 | 2012-03-02 | Air-fuel ratio control system for gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441501U true CN202441501U (en) | 2012-09-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200756161U Expired - Fee Related CN202441501U (en) | 2012-03-02 | 2012-03-02 | Air-fuel ratio control system for gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441501U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588132A (en) * | 2012-03-02 | 2012-07-18 | 中国石油天然气集团公司 | Air-fuel ratio control system of gas engine |
| CN102966467A (en) * | 2012-11-08 | 2013-03-13 | 广东新科迪环保科技有限公司 | Gas pressure transmitting system for gas internal combustion engine |
| CN105201659A (en) * | 2014-06-11 | 2015-12-30 | 上海保罗杰动力设备有限公司 | Fuel engine control system |
| CN106837566A (en) * | 2017-01-20 | 2017-06-13 | 新奥科技发展有限公司 | A kind of natural gas engine electric-control system and co-generation unit |
-
2012
- 2012-03-02 CN CN2012200756161U patent/CN202441501U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588132A (en) * | 2012-03-02 | 2012-07-18 | 中国石油天然气集团公司 | Air-fuel ratio control system of gas engine |
| CN102966467A (en) * | 2012-11-08 | 2013-03-13 | 广东新科迪环保科技有限公司 | Gas pressure transmitting system for gas internal combustion engine |
| CN105201659A (en) * | 2014-06-11 | 2015-12-30 | 上海保罗杰动力设备有限公司 | Fuel engine control system |
| CN106837566A (en) * | 2017-01-20 | 2017-06-13 | 新奥科技发展有限公司 | A kind of natural gas engine electric-control system and co-generation unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20210302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |