CN106050450B - The self-adaptive starting method and system of air inlet premixed type gas engine - Google Patents
The self-adaptive starting method and system of air inlet premixed type gas engine Download PDFInfo
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- CN106050450B CN106050450B CN201610496606.8A CN201610496606A CN106050450B CN 106050450 B CN106050450 B CN 106050450B CN 201610496606 A CN201610496606 A CN 201610496606A CN 106050450 B CN106050450 B CN 106050450B
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- gas engine
- gas
- aperture
- revolving speed
- control valve
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Classifications
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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
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- 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
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- 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
- F02D41/1497—With detection of the mechanical response of the engine
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The present invention relates to the systems of the self-adaptive starting method and implementation this method of gas engine technical field more particularly to a kind of air inlet premixed type gas engine, and this method comprises the following steps：Step S1, starting switch for gas engine is opened, in the start-up course of gas engine, is measured by revolving speed of the revolution detector to gas engine；Step S2, the revolving speed of the gas engine measured by control unit according to revolution detector judges whether the revolving speed of gas engine increases in nominal time T, when the revolving speed of gas engine increases in nominal time T, continues to start gas engine；When the revolving speed of gas engine does not increase in nominal time T, it is modified by aperture R of the aperture correction mechanism to gas control valve.It can control the gasoline air mixture ratio adaptive change into gas engine cylinder, obtain enabling the best aperture of the gas control valve of gaseous mixture normal ignition in gas engine cylinder.
Description
Technical field
The present invention relates to the adaptive of gas engine technical field more particularly to a kind of air inlet premixed type gas engine
Start method and system.
Background technique
As a kind of clean energy resource, natural gas is more and more used for non-rice habitats dynamo engine.In general, combustion gas
Engine is for when generating electricity, the supply of natural gas to be one big by being depressurized to the gaseous-pressure in gas pipeline with zero-pressure valve
Air pressure or so, then control by gas control valve opening size the gas quantity into engine.Finally, combustion gas and air pass through
Air inlet engine cylinder combustion after one mixer premix.The characteristics of this configuration is that the gas quantity into engine is mixed
Before device before air pressure, gas control valve gaseous-pressure, gas control valve aperture three influence, only gas control valve aperture without
Method accurately controls the gas quantity of entrance.
In the prior art, the log-on data of gas engine is solidified by engine pedestal rating test.When combustion gas controls
After the starting aperture data write of valve, if more reengined, the adjustment of zero-pressure valve is inaccurate or environmental condition (temperature etc.) changes
Afterwards, the still original gas control valve of use starts aperture data, will cause practical gas inlet amount and is not able to satisfy ignition need
It asks, engine can not be started.The natural gas quality that different clients use is different, and also resulting in engine start difficulty even can not
Play vehicle.If engine can not start, needs to manually adjust zero-pressure valve or log-on data is artificially repaired using diagnostic equipment
Just.It is not only troublesome but by manually adjusting the starting of zero-pressure valve, but also will affect the economy of engine accidental conditions
Property and discharge；And the log-on data of gas control valve is adjusted by diagnostic equipment, professional equipment is not only needed, but also need professional people
Member's operation, it is larger to spend human and material resources resource.Also, the amendment data under varying environment are different, cause each engine can not
The Optimization Work that will be started when starting.
Summary of the invention
(1) technical problems to be solved
The present invention provides the self-adaptive starting method and system of a kind of air inlet premixed type gas engine, with solve it is existing into
The problem of gas premixed type gas engine difficulty in starting.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of self-adapting starts of air inlet premixed type gas engine
Method includes the following steps：Step S1, starting switch for gas engine is opened, in the start-up course of gas engine, by
Revolution detector measures the revolving speed of gas engine；Step S2, it is measured by control unit according to revolution detector
The revolving speed of gas engine judges whether the revolving speed of gas engine increases in nominal time T, when the revolving speed of gas engine
When increasing in nominal time T, continue to start gas engine；When the revolving speed of gas engine does not increase in nominal time T
When, it is modified by aperture R of the aperture correction mechanism to gas control valve.
According to the present invention, in step s 2, the process being modified by aperture R of the aperture correction mechanism to gas control valve
For periodical makeover process, so that the maximum of revised gas control valve limits aperture RmaxAperture R is limited with minimumminNot
More than preset value.
According to the present invention, in step s 2, the process being modified by aperture R of the aperture correction mechanism to gas control valve
Including：Step S21, increase the aperture of gas control valve by a correction value Δ R；Step S22, it is examined by control unit according to revolving speed
The revolving speed for surveying the gas engine that device measures judges whether the revolving speed of gas engine increases in unit time Δ t, works as combustion
When the revolving speed of gas engine increases in unit time Δ t, keeps the aperture R' of revised gas control valve constant, continue to open
Dynamic gas engine；When the revolving speed of gas engine does not increase in unit time Δ t, it is back to step S21.
According to the present invention, it in step S22, when the revolving speed of gas engine does not increase in unit time Δ t, is returning
It is back to before step S21, first carries out following steps：Step S23, the aperture of revised gas control valve is judged by control unit
Whether R', which reaches maximum, limits aperture Rmax, as R'< RmaxWhen, it is back to step S21；Work as R'=RmaxWhen, execute following steps：
Step S24, the aperture of gas control valve is made to reduce a correction value Δ R；Step S25, by control unit according to revolution detector
The revolving speed of the gas engine measured judges whether the revolving speed of gas engine increases in unit time Δ t, when combustion gas is sent out
It when the revolving speed of motivation increases in unit time Δ t, keeps the aperture R' of revised gas control valve constant, continues starting combustion
Gas engine；When the revolving speed of gas engine does not increase in unit time Δ t, it is back to step S24.
According to the present invention, in step s 25, it when the revolving speed of gas engine does not increase in unit time Δ t, is returning
It is back to before step S24, first carries out following steps：Step S26, the aperture of revised gas control valve is judged by control unit
Whether R', which reaches minimum, limits aperture Rmin, as R'> RminWhen, it is back to step S24；Work as R'=RminWhen, it is back to step
S21。
According to the present invention, in step s 2, after the start-up course duration of gas engine being more than preset time, stop
Only start gas engine.
The present invention also provides a kind of self-adapting start systems of air inlet premixed type gas engine, including：Combustion gas is started
Machine, the revolution detector for measuring gas engine revolving speed, for gas engine delivery of fuel gas gas pipeline, be set to
On gas pipeline and the control unit of the adjustable gas control valve of aperture and the aperture for controlling gas control valve, control
Unit has aperture correction mechanism, and in the start-up course of gas engine, control unit is measured according to revolution detector
The revolving speed of gas engine judges whether the revolving speed of gas engine increases in nominal time T, and is controlled according to judging result
The aperture of aperture correction mechanism amendment gas control valve.
According to the present invention, the process that aperture correction mechanism is modified the aperture of gas control valve was corrected to be periodical
Journey.
According to the present invention, periodical makeover process makes the maximum of revised gas control valve limit aperture and irreducible minimum
Determine aperture and is no more than preset value.
(3) beneficial effect
The self-adaptive starting method and system for the air inlet premixed type gas engine that above-mentioned technical proposal of the invention provides
It has the following advantages that：
The situation of change of the revolving speed of the gas engine measured by control unit according to revolution detector, control aperture are repaired
Positive mechanism carries out adaptive correction to the aperture of gas control valve, to control the gasoline air mixture ratio for entering gas engine cylinder
Adaptive change, to obtain enabling most preferably the opening of the gas control valve of gaseous mixture normal ignition in gas engine cylinder
Degree solves difficulty in starting after gas component changes, demarcates, starts repeatedly repeatedly so that gas engine can smoothly start
The problem of, there are good adaptability and versatility to gas engine is started under varying environment, can effectively save human cost, mention
High product applicability generates economic benefit.
Detailed description of the invention
Fig. 1 is the flow diagram of the self-adaptive starting method of the air inlet premixed type gas engine of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of self-adaptive starting method of air inlet premixed type gas engine provided in an embodiment of the present invention.
Specifically, the self-adaptive starting method of the air inlet premixed type gas engine of the present embodiment includes the following steps：
Step S1, starting switch for gas engine is opened, starting switch for gas engine herein is indicated with T50,
Starting request is indicated with T50 set, and using T50 set as start time.In the start-up course of gas engine, by revolving speed
Detector carries out real-time measurement to the revolving speed of gas engine.
Step S2, the revolving speed of the gas engine measured by control unit according to revolution detector judges gas engine
Revolving speed whether increased in nominal time T, nominal time T can be demarcated according to the actual situation, not limited to, such as can
To be demarcated as 2s.When the revolving speed of gas engine increases in nominal time T, show the gaseous mixture in gas engine cylinder
Can be with normal ignition, therefore can continue to start gas engine, until gas engine starts successfully.When turning for gas engine
When speed does not increase in nominal time T, show that the gaseous mixture in gas engine cylinder without igniting sign, need to be corrected by aperture at this time
Mechanism is modified the aperture R of gas control valve, to promote gas engine that can successfully start up.
It in the present embodiment, is periodical by the process that aperture R of the aperture correction mechanism to gas control valve is modified
Makeover process, so that the maximum of revised gas control valve limits aperture RmaxAperture R is limited with minimumminIt is no more than default
Value, the preset value be the maximum opening value that enables the aperture of gas control valve to guarantee that normal gas engine successfully starts up and
Minimum opening value.
Specifically, in the present embodiment, the process packet being modified by aperture R of the aperture correction mechanism to gas control valve
It includes：
Step S21, increase the aperture of gas control valve by a correction value Δ R.
Step S22, the revolving speed of the gas engine measured by control unit according to revolution detector judges that combustion gas is started
Whether the revolving speed of machine increases in unit time Δ t, and unit time Δ t is the delay stepsize demarcated according to gas handling system arrangement,
Do not limit to, such as 50ms can be demarcated as.When the revolving speed of gas engine increases in unit time Δ t, amendment is kept
The aperture R' of gas control valve afterwards is constant, continues to start gas engine.When the revolving speed of gas engine is in unit time Δ t
When not increasing inside, following steps are executed：
Step S23, judge whether the aperture R' of revised gas control valve reaches maximum and limit aperture by control unit
Rmax, as R'< RmaxWhen, it is back to step S21, continues growing the aperture of gas control valve.Work as R'=RmaxWhen, execute following step
Suddenly：
Step S24, the aperture of gas control valve is made to reduce a correction value Δ R.
Step S25, the revolving speed of the gas engine measured by control unit according to revolution detector judges that combustion gas is started
Whether the revolving speed of machine increases in unit time Δ t.When the revolving speed of gas engine increases in unit time Δ t, keep
The aperture R' of revised gas control valve is constant, continues to start gas engine.When the revolving speed of gas engine is in unit
Between when not increasing in Δ t, execute following steps：
Step S26, judge whether the aperture R' of revised gas control valve reaches minimum and limit aperture by control unit
Rmin, as R'> RminWhen, it is back to step S24, continues the aperture for reducing gas control valve.Work as R'=RminWhen, it is back to step
S21 increases the aperture of gas control valve again.
As a result, to the aperture R of gas control valve recycled repeatedly it is periodical correct, until gas engine starting at
Function.But in order to protect gas engine, after the start-up course duration of gas engine being more than preset time, no matter
Whether starting is successful, will stop starting gas engine.
The present embodiment additionally provides a kind of self-adapting start system of air inlet premixed type gas engine, and the system is for real
Apply the self-adaptive starting method of above-mentioned air inlet premixed type gas engine.The air inlet premixed type gas engine of the present embodiment from
Adapting to activation system includes：Gas engine, the revolution detector for measuring gas engine revolving speed, for starting to combustion gas
The gas pipeline of machine delivery of fuel gas, on gas pipeline and the adjustable gas control valve of aperture and for controlling combustion gas control
The control unit of the aperture of valve processed, control unit has aperture correction mechanism, and in the start-up course of gas engine, control is single
The revolving speed for the gas engine that member is measured according to revolution detector judge the revolving speed of gas engine in nominal time T whether
It increases, and controls the aperture of aperture correction mechanism amendment gas control valve according to judging result.The aperture straightener of the present embodiment
The process that structure is modified the aperture of gas control valve is periodical makeover process, so that revised gas control valve is most
Big aperture and the minimum aperture that limits of limiting is no more than preset value.
The self-adaptive starting method of the air inlet premixed type gas engine of the present embodiment and air inlet for implementing this method
The self-adapting start system of premixed type gas engine, the gas engine measured by control unit according to revolution detector
The situation of change of revolving speed, control aperture correction mechanism carry out adaptive correction to the aperture of gas control valve, enter combustion with control
The gasoline air mixture ratio adaptive change of gas cylinder, thus obtain enabling in gas engine cylinder gaseous mixture just
The best aperture for the gas control valve often lighted a fire, so that gas engine can smoothly start, after solving gas component variation
Difficulty in starting is demarcated, the problem of starting repeatedly repeatedly, has good adaptability and logical to gas engine is started under varying environment
With property, human cost can be effectively saved, improves product applicability, generates economic benefit.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (5)
1. a kind of self-adaptive starting method of air inlet premixed type gas engine, which is characterized in that include the following steps：
Step S1, starting switch for gas engine is opened, in the start-up course of gas engine, by revolution detector to combustion
The revolving speed of gas engine measures；
Step S2, the revolving speed of the gas engine measured by control unit according to revolution detector judges turning for gas engine
Whether speed increases in nominal time T, when the revolving speed of gas engine increases in nominal time T, continues to start combustion gas hair
Motivation；When the revolving speed of gas engine does not increase in nominal time T, by aperture correction mechanism to the aperture of gas control valve
R is modified, so that the maximum of revised gas control valve limits aperture RmaxAperture R is limited with minimumminIt is no more than pre-
If value；
In the step S2, include by the process that aperture R of the aperture correction mechanism to gas control valve is modified：
Step S21, increase the aperture of gas control valve by a correction value Δ R；
Step S22, the revolving speed of the gas engine measured by control unit according to revolution detector judges gas engine
Whether revolving speed increases in unit time Δ t, when the revolving speed of gas engine increases in unit time Δ t, keeps amendment
The aperture R' of gas control valve afterwards is constant, continues to start gas engine；When the revolving speed of gas engine is in unit time Δ t
When not increasing inside, it is back to the step S21；
In the step S22, when the revolving speed of gas engine does not increase in unit time Δ t, it is being back to the step
Before rapid S21, following steps are first carried out：
Step S23, judge whether the aperture R' of revised gas control valve reaches maximum and limit aperture R by control unitmax,
As R'< RmaxWhen, it is back to the step S21；Work as R'=RmaxWhen, execute following steps：
Step S24, the aperture of gas control valve is made to reduce a correction value Δ R；
Step S25, the revolving speed of the gas engine measured by control unit according to revolution detector judges gas engine
Whether revolving speed increases in unit time Δ t, when the revolving speed of gas engine increases in unit time Δ t, keeps amendment
The aperture R' of gas control valve afterwards is constant, continues to start gas engine；When the revolving speed of gas engine is in unit time Δ t
When not increasing inside, it is back to the step S24.
2. the self-adaptive starting method of air inlet premixed type gas engine according to claim 1, which is characterized in that in institute
It states in step S2, is periodical makeover process by the process that aperture R of the aperture correction mechanism to gas control valve is modified.
3. the self-adaptive starting method of air inlet premixed type gas engine according to claim 1, which is characterized in that in institute
State in step S25, when the revolving speed of gas engine does not increase in unit time Δ t, be back to the step S24 it
Before, first carry out following steps：
Step S26, judge whether the aperture R' of revised gas control valve reaches minimum and limit aperture R by control unitmin,
As R'> RminWhen, it is back to the step S24；Work as R'=RminWhen, it is back to the step S21.
4. the self-adaptive starting method of air inlet premixed type gas engine according to claim 1, which is characterized in that in institute
It states in step S2, after the start-up course duration of gas engine being more than preset time, stops starting gas engine.
5. a kind of self-adapting start system of air inlet premixed type gas engine, which is characterized in that including：Gas engine, use
In measure the gas engine revolving speed revolution detector, for the gas engine delivery of fuel gas gas pipeline,
On the gas pipeline and the adjustable gas control valve of aperture and the aperture for controlling the gas control valve
Control unit；The gas engine, revolution detector, gas pipeline, gas control valve and control unit perform claim are wanted
Step in the self-adaptive starting method of air inlet premixed type gas engine described in asking any one of 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610496606.8A CN106050450B (en) | 2016-06-28 | 2016-06-28 | The self-adaptive starting method and system of air inlet premixed type gas engine |
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| CN201610496606.8A CN106050450B (en) | 2016-06-28 | 2016-06-28 | The self-adaptive starting method and system of air inlet premixed type gas engine |
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| CN106050450B true CN106050450B (en) | 2018-11-16 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107100746B (en) * | 2017-06-22 | 2019-07-05 | 潍柴西港新能源动力有限公司 | A kind of gas engine starting control method |
| CN110566351B (en) * | 2019-09-25 | 2022-04-26 | 潍柴动力股份有限公司 | Starting method of engine and engine controller |
| CN110685811B (en) * | 2019-09-26 | 2021-12-17 | 潍柴西港新能源动力有限公司 | Self-adaptive control method for fuel gas quality of natural gas engine |
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