CN105201659A - Fuel engine control system - Google Patents
Fuel engine control system Download PDFInfo
- Publication number
- CN105201659A CN105201659A CN201410257129.0A CN201410257129A CN105201659A CN 105201659 A CN105201659 A CN 105201659A CN 201410257129 A CN201410257129 A CN 201410257129A CN 105201659 A CN105201659 A CN 105201659A
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- gas
- air
- engine
- electronic throttle
- fuel
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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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- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a fuel engine control system which comprises a fuel supply system, an air pressure control system, a waste gas output system, an engine ignition system and an electronic control unit (ECU). By adding a first electronic throttle valve and a second electronic throttle valve to the fuel supply system to further accurately control the fuel passing by, gas fuel finally entering an engine cylinder is more sufficiently combusted, lean burn of an engine can be achieved, heat loads on the engine are reduced, and better emission performance and good economic benefits are achieved.
Description
Technical field
The present invention relates to engine mechanical technical field, refer more particularly to a kind of gas engine control system.
Background technique
Conventional engine operation principle is as follows: the fuel of high pressure compressed is after filter cleaner filters, enter high pressure relief device, by the high-pressure gas 5MPa-20MPa pressure adjusting of compression to about 0.8MPa, high-pressure gas is in the process of decompression, due to puffing, need to absorb a large amount of heat, cause significantly lowering the temperature in decompressor, for preventing freezing in decompressor, in-engine cooling liquid caused for the gas heating passed through by heat exchanger, after combustion gas and air fully mix in a mixer, enter in the cylinder of motor, driving motor is lighted through ignition system, the concentration of ECU oxygen in sensor is to discharged waste gas sends new instruction, the ratio of gas quantity and air quantity needed for further correction.
But what commonly use due to current engine system is control to mixed gas the amount that it is input to motor by a closure, and the control of a closure, fuel can be caused to control inaccuracy, delivery temperature is high, motor is caused easily to misfire, more lean combustion cannot be realized, waste fuel.And a kind of motor more advanced on market uses automatically controlled single-point discharge technology to realize accurately controlling, but this technology needs high-pressure air source just can realize, and just need the supplementary equipment of some costlinesses just can realize its supercharging for those low pressure or conventional air pressure to realize electric-controlled injection, and so increase just needing cost, be unfavorable for that most of enterprise carries out mass production and popularization.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of gas engine control system, it has good Economy, and more excellent emission performance can reduce engine heat load, realize lean combustion.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of gas engine control system, and it comprises fuel supply system, air-pressure controlling system, waste gas output system, engine igniting system and electronic control component ECU, wherein:
Fuel supply system comprises fuel inlet pipe road, high-pressure shut-off, decompressor, combustion gas filter cleaner, voltage stabilizer, heat exchanger, combustion gas thermostat, gas metering valve, mixer, mixed gas sensor is disposed with according to fuel input direction, also comprise the first electronic throttle and the second electronic throttle, wherein the first electronic throttle is arranged between gas metering valve and mixer input end, and the second electronic throttle is connected with the output terminal of mixer.Through high pressure compressed combustion gas from gas cylinder out, ECU gives signal and controls high-pressure shut-off supply in time or close combustion gas, because gas cylinder combustion gas out has very high pressure, need first to be used for gaseous-pressure to reduce through a decompressor, after combustion gas filter cleaner filter particulates, enter into a voltage stabilizer, further guarantee by the stability of gaseous-pressure, because combustion gas is through decompressor, the combustion gas of compression becomes gaseous state from liquid state, need to absorb a large amount of heats, freeze before entering gas metering valve to prevent combustion gas, by installing a heat exchanger, quote cooling liquid in motor further to gas heating, in order to control the temperature entering combustion gas in mixer better, after heat exchanger, a combustion gas thermostat is installed, make the fuel gas temperature passed through can remain in certain temperature range, when temperature is too high, combustion gas thermostat cuts out, treat that cooling after-burning gas thermostat is opened, combustion gas is by having entered into gas metering valve, the gas quantity entered is detected for ECU, in order to make full use of fuel, better realize engine underpressure burning, pipeline before gas metering valve output terminal and mixer is provided with the first electronic throttle, because electronic throttle is integrated with execution original paper, position transducer, the structures such as choke valve, ECU can be made passed through gas quantity to be detected, and suitably make the gas quantity revised and order needed for Reasonable adjustment reality, combustion gas from the first electronic throttle out after just enter into mixer, after carrying the air of coming to mix through air-pressure controlling system, through the second electronic throttle, by controlling the aperture of the second electronic throttle inner valve, control the amount entering mixed gas in engine cylinder, thus control rotating speed and the load of motor, ECU detects the concentration of the mixed gas that mixed gas sensor transmits, temperature also makes correction order.
Air-pressure controlling system comprises air input passageway, the environmental sensor on air input passageway is successively set on according to air input direction, air-strainer, pressurized machine and intercooler, fresh air is after air-strainer impurity screening, enter into pressurized machine, air after filtration improves its density through compressed, more air can be made to enter into engine cylinder, simultaneously due to air compressing, the air pressure of the air that its density is discharged after improving also increases, temperature raises, an intercooler can be installed for controlling the air through compressed, thus the efficiency of motor can be improved, environmental sensor testing environment information feed back is to ECU, ECU judges to make revision directive.
Waste gas output system comprises exhaust output tube road, be arranged on the exhaust gas control valve on exhaust output tube road and exhaust gas oxygen sensor, exhaust gas control valve is installed and can controls its outlet pressure, the boost pressure of motor can be controlled further, can effectively promote low engine speed moment of torsion, meet the work requirements that frequent starting starts, and ECU is by detecting the content of oxygen in the waste gas that transmits of exhaust gas oxygen sensor, and judge air fuel ratio when burning, thus revise the delivery volume of combustion gas further.
Engine igniting system comprises spark coil, is arranged on the spark plug of spark coil lower end.After combustion gas enters into engine cylinder, ECU gives spark coil instruction, makes it produce high voltage, and high voltage transfer, to spark plug, produces spark, lights combustion gas.
Electronic control component ECU makes fill order according to the signal of various sensor feedback, for the operating conditions of better monitoring engine.
Compared to prior art, the gas engine control system that the present invention adopts, by adding the first electronic throttle and the second electronic throttle in fuel supply system, for further accurately controlling passed through fuel, make the fuel gas buring that finally enters in engine cylinder more abundant, the lean combustion of motor can be realized, reduce engine heat load, there is better emission performance and good economic benefit.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Fig. 1 is gas engine control system fundamental diagram of the present invention;
Embodiment
As shown in Figure 1, be engine control system of the present invention, comprise fuel supply system, air-pressure controlling system, waste gas output system, engine igniting system and electronic control component ECU, wherein:
Fuel supply system comprises: gas pipeline 10, the high-pressure shut-off 11 set gradually according to gas inlet direction, decompressor 12, combustion gas filter cleaner 13, voltage stabilizer 14, heat exchanger 15, combustion gas thermostat 16, gas metering valve 17, first electronic throttle 18, mixer 19, second electronic throttle 110 and mixed gas sensor 111;
Air-pressure controlling system comprises air input passageway 20, the environmental sensor 21 set gradually according to air inlet direction, air-strainer 22, pressurized machine 23 and intercooler 24;
Waste gas output system comprises exhaust output tube road 30, is arranged on the exhaust gas control valve 31 on exhaust output tube road and exhaust gas oxygen sensor 32;
Engine igniting system comprises spark coil 41, is arranged on the spark plug 42 of spark coil lower end, motor 43 and engine start protective relay 44;
Electronic control component ECU51.
Gas engine control system of the present invention works in the following manner: pressure is that the compressed gas of 10MPa enters gas pipeline 10, ECU51 detects and gives SC sigmal control high-pressure shut-off 11 and supplies and cut off combustion gas, combustion gas enters to combustion gas filter cleaner 13 after the high-pressure gas Pressure Drop of compression is low to moderate 0.8MPa by decompressor 12, filter the contaminant particles in combustion gas through combustion gas filter cleaner 13 after combustion gas enter voltage stabilizer 14 in case ensure remained on the stability of 0.8MPa by gaseous-pressure, combustion gas is through decompressor, the combustion gas of compression becomes gaseous state from liquid state, need to absorb a large amount of heats, freeze before entering gas metering valve to prevent combustion gas, a heat exchanger 15 is installed and quotes cooling liquid in motor to gas heating, combustion gas is by entering into combustion gas thermostat 16 after heat exchanger 15, make the fuel gas temperature passed through can remain in less than 40 ° temperature ranges, when temperature is higher than 40 °, combustion gas thermostat 16 cuts out a few second, treat that cooling after-burning gas thermostat 16 is opened, combustion gas is by having entered into gas metering valve 17, ECU51 detects the gas quantity that gas metering valve 17 passes into, judge whether it is motor aequum, for adjusting update the system parameter further, combustion gas has out entered into the first electronic throttle 18 afterwards from gas metering valve 17, sensor in first electronic throttle 18 by the combustion gas information feed back that detects to ECU51, ECU51 assigns according to the operating conditions of motor the openings of sizes that instruction controls the valve in the first electronic throttle 18, adjust the amount of the combustion gas that it passes through.
Simultaneously, ECU environmentally sensor 21 feed back environmental information, judge to make instruction, control motor 43 required air quantity, fresh air enters in air pipe line 20, and the contaminant particles in fresh air filters out by air-strainer 22, air after filtering enters into pressurized machine 23, pressurized machine 23 pressurized air, the air temperature after compression raises, and an external intercooler 24 is for lowering the temperature to high temperature air.
Through the first electronic throttle 18 combustion gas and enter in mixer 19 the abundant mixing carrying out fuel through the air of intercooler 24, the external mixer 19 of second electronic throttle 110, mixed gaseous fuel enters in the second electronic throttle 110, ECU detects the sensor in the second electronic throttle 110, the openings of sizes that instruction controls the valve in the second electronic throttle 110 is sent according to the operating conditions of motor 43, thus adjustment enters the amount of mixed fuel in motor 43 cylinder, mixed gas sensor 111 will detect the information feed back such as the concentration of the gaseous fuel mixed in mixed pipe line to ECU51.
After combustion gas enters into motor 43 cylinder, ECU51 gives spark coil 41 instruction, makes it produce high voltage; high voltage transfer, to spark plug 42, produces spark, lights combustion gas; drive the startup running of motor, engine start protective relay 44 is for the protection of the startup of motor 43.
The waste gas that motor 43 burning produces is discharged by exhaust pipe 30, exhaust pipe 30 is provided with exhaust gas control valve 31 for controlling its outlet pressure, in the outlet port of exhaust pipe 30, exhaust gas oxygen sensor 32 is installed, for detecting the content of oxygen in waste gas, and testing result is fed back to ECU51, the delivery volume of combustion gas is revised further for ECU51.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. a gas engine control system, comprises fuel supply system, air-pressure controlling system, waste gas output system, engine igniting system and electronic control component ECU, wherein:
Air-pressure controlling system comprises air input passageway, is successively set on the environmental sensor on air input passageway, air-strainer according to air input direction, pressurized machine and intercooler;
Waste gas output system comprises exhaust output tube road, is arranged on the exhaust gas control valve on exhaust output tube road and exhaust gas oxygen sensor;
Engine igniting system comprises spark coil, is arranged on the spark plug of spark coil lower end;
Fuel supply system comprises fuel inlet pipe road, is disposed with high-pressure shut-off, decompressor, combustion gas filter cleaner, voltage stabilizer, heat exchanger, combustion gas thermostat, gas metering valve, mixer, mixed gas sensor according to fuel input direction;
It is characterized in that: described fuel supply system also comprises the first electronic throttle and the second electronic throttle, wherein the first electronic throttle is arranged between gas metering valve and mixer input end, the output terminal of the external mixer of the second electronic throttle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257129.0A CN105201659A (en) | 2014-06-11 | 2014-06-11 | Fuel engine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257129.0A CN105201659A (en) | 2014-06-11 | 2014-06-11 | Fuel engine control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201659A true CN105201659A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410257129.0A Pending CN105201659A (en) | 2014-06-11 | 2014-06-11 | Fuel engine control system |
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| CN (1) | CN105201659A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489548A (en) * | 2016-06-09 | 2017-12-19 | 福特环球技术公司 | System and method for adjusting air- distributor pressure |
| CN109736976A (en) * | 2019-03-07 | 2019-05-10 | 广西玉柴机器股份有限公司 | The fuel system of V-type gas engine |
| CN110173377A (en) * | 2019-07-03 | 2019-08-27 | 广西玉柴机器股份有限公司 | The gaseous-pressure feedback system of gas engine |
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| JP2008223654A (en) * | 2007-03-14 | 2008-09-25 | Kubota Corp | Engine |
| CN201250710Y (en) * | 2008-07-15 | 2009-06-03 | 山东申普汽车控制技术有限公司 | Liquefied petroleum gas LPG engine control system |
| CN202125375U (en) * | 2011-07-05 | 2012-01-25 | 潍坊耐普特燃气发电设备有限公司 | Engine for gas generating unit capable of realizing lean burning |
| CN202441501U (en) * | 2012-03-02 | 2012-09-19 | 中国石油天然气集团公司 | Air-fuel ratio control system for gas engine |
| CN203230507U (en) * | 2013-05-06 | 2013-10-09 | 郑州宇通客车股份有限公司 | Fuel gas energy-saving automobile and natural gas engine fuel heating and supplying system thereof |
| CN203925761U (en) * | 2014-06-11 | 2014-11-05 | 上海保罗杰动力设备有限公司 | Gas engine control system |
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2014
- 2014-06-11 CN CN201410257129.0A patent/CN105201659A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008223654A (en) * | 2007-03-14 | 2008-09-25 | Kubota Corp | Engine |
| CN201250710Y (en) * | 2008-07-15 | 2009-06-03 | 山东申普汽车控制技术有限公司 | Liquefied petroleum gas LPG engine control system |
| CN202125375U (en) * | 2011-07-05 | 2012-01-25 | 潍坊耐普特燃气发电设备有限公司 | Engine for gas generating unit capable of realizing lean burning |
| CN202441501U (en) * | 2012-03-02 | 2012-09-19 | 中国石油天然气集团公司 | Air-fuel ratio control system for gas engine |
| CN203230507U (en) * | 2013-05-06 | 2013-10-09 | 郑州宇通客车股份有限公司 | Fuel gas energy-saving automobile and natural gas engine fuel heating and supplying system thereof |
| CN203925761U (en) * | 2014-06-11 | 2014-11-05 | 上海保罗杰动力设备有限公司 | Gas engine control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489548A (en) * | 2016-06-09 | 2017-12-19 | 福特环球技术公司 | System and method for adjusting air- distributor pressure |
| CN107489548B (en) * | 2016-06-09 | 2022-02-08 | 福特环球技术公司 | System and method for adjusting intake manifold pressure |
| CN109736976A (en) * | 2019-03-07 | 2019-05-10 | 广西玉柴机器股份有限公司 | The fuel system of V-type gas engine |
| CN110173377A (en) * | 2019-07-03 | 2019-08-27 | 广西玉柴机器股份有限公司 | The gaseous-pressure feedback system of gas engine |
| CN110173377B (en) * | 2019-07-03 | 2023-12-01 | 广西玉柴机器股份有限公司 | Gas pressure feedback system of gas engine |
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Application publication date: 20151230 |