CN108825391A - Improve the device and its response method of natural gas engine transient response - Google Patents
Improve the device and its response method of natural gas engine transient response Download PDFInfo
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- CN108825391A CN108825391A CN201810752387.4A CN201810752387A CN108825391A CN 108825391 A CN108825391 A CN 108825391A CN 201810752387 A CN201810752387 A CN 201810752387A CN 108825391 A CN108825391 A CN 108825391A
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- air
- engine
- control unit
- electronic control
- gas
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
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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
- F02D41/0002—Controlling intake air
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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
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
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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
- 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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- 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
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
- F02D2200/602—Pedal position
Abstract
The invention discloses a kind of devices for improving natural gas engine transient response, including inlet manifold, normal air supply channel, gas supply pipe and fuel gas injection valve, normal air supply channel is also communicated with transient response air supply channel, further include for detecting the throttle position switch of gas pedal aperture, the speed probe for detecting engine speed, normal air supply channel, transient response air supply channel, throttle position switch and speed probe are respectively connected to the electronic control unit ECU of engine；Also disclose the response method of the device；It is engine for combustion gas using normal air supply channel, when electronic control unit ECU needs transient response according to the judgement of each detection parameters, combustion gas is provided using transient response air supply channel, it opens anti-surge valve simultaneously air is discharged, improve air supply, engine air air inflow is quickly improved in short time, improves engine transient response performance.
Description
Technical field
The present invention relates to a kind of devices for improving natural gas engine transient response, further relate to the specific responder of the device
Method.
Background technique
The natural gas engine being commonly used is mostly single point injection, air inlet pipe mixing, since the burning of natural gas is special
Property, need more accurately to control air-fuel ratio, moment more jet natural gas effects are limited, can not make up the bad of transient response completely
Gesture.So the key for promoting transient response is mostly only into air, but the influence sluggish due to pressurization, air input of engine by air increase
It is relatively slow, compare that the generally existing transient response of diesel engine is slower, need it is anxious accelerate, phenomenon performance is especially under the operating condition of load
Obviously, the problem of above-mentioned phenomenon mainly results in following aspect：
(1) all relatively slow using the motor vehicle starting and acceleration of natural gas engine；
(2) poor using engineering machinery, loading characteristics such as excavator, the loading machines of natural gas engine.
It is therefore desirable to improve the transient response of natural gas engine, to eliminate drawbacks described above, optimization is sent out using natural gas
The mechanical property of motor vehicle, the engineering machinery of motivation etc..
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of improvement air feed, improve engine operational stability
Improve the device of natural gas engine transient response.
In order to solve the above technical problems, the technical scheme is that：The device of natural gas engine transient response is improved,
Including the inlet manifold being connected to the engine, the inlet end of the inlet manifold is connected with normal air supply channel, described normal
It is communicated with gas supply pipe on air supply channel, fuel gas injection valve is serially connected on the gas supply pipe, the inlet manifold's goes out
Gas end is connected to the cylinder of engine, and it further includes for examining that the normal air supply channel, which is also communicated with transient response air supply channel,
Throttle position switch, the speed probe for detecting engine speed of gas pedal aperture are surveyed, the normal gas supply is logical
Road, the transient response air supply channel, the throttle position switch and the speed probe are respectively connected to engine
Electronic control unit ECU；
The normal air supply channel includes air manifold, and air throttle, the solar term are equipped on the air manifold
Door, which goes out on the air manifold of gas side, is equipped with gas mixer, and the gas supply pipe connection is in the gas mixer
On, anti-surge blow off pipe, the anti-surge blow off Guan Shangan are communicated on the air manifold of the throttle inflow side
Equipped with anti-surge valve, the anti-surge valve and the air throttle are connected separately to the electronic control unit ECU；
The transient response air supply channel includes air compressor, and the outlet side of the air compressor is connected with gas storage
Tank, on the air manifold that the air accumulator goes out gas side to the air throttle by pipeline connection, peace in the air accumulator
Equipped with pressure sensor, air intake valve, the pipeline of the air accumulator outlet side are installed on the pipeline of the air accumulator inlet end
On outlet valve is installed, the pressure sensor, the air intake valve and the outlet valve are respectively connected to described automatically controlled
Unit ECU.
The anti-surge valve and the air intake valve are respectively set to switching mode valve, institute as a preferred technical solution,
It states outlet valve and is set as aperture adjustable type valve.
The air compressor is the compressor carried on engine as a preferred technical solution,.
The air compressor is free-standing compressor as a preferred technical solution, and the air compressor belt passes
The dynamic power output end for being connected to the engine.
The present invention also provides the response methods of the device of above-mentioned raising natural gas engine transient response, including following step
Suddenly,
Step 1: starting the engine and the electronic control unit ECU；
Step 2: the air pressure in air accumulator described in the pressure sensor real-time detection, and pressure signal is sent to institute
Electronic control unit ECU is stated, is stored with pressure criteria value in the electronic control unit ECU, when electronic control unit ECU judgement detects
Pressure signal be greater than the pressure criteria value when, into next step；Otherwise the electronic control unit ECU controls the air intake valve
It opens, is the air accumulator inflating pressure using the air compressor, and run according to throttle normal response；
Step 3: the opening amount signal of the throttle position switch real-time detection gas pedal, and opening amount signal is conveyed
To the electronic control unit ECU, it is stored with opening amount signal standard value in the electronic control unit ECU, when the electronic control unit ECU sentences
When the disconnected opening amount signal detected is less than the opening amount signal standard value, into next step；Otherwise it is transported according to throttle normal response
Row；
Step 4: the gas pedal opening amount signal that the electronic control unit ECU is arrived according to real-time reception, and according to gas pedal
Opening amount signal calculate pedal rate of change, be stored with pedal rate of change standard value in the electronic control unit ECU, when pedal become
When rate >=pedal rate of change standard value, into next step；Otherwise it is run according to throttle normal response；
Step 5: the revolving speed of the speed probe real-time detection engine, and tach signal is delivered to described automatically controlled
Unit ECU is stored with tach signal standard value in the electronic control unit ECU, detects when electronic control unit ECU judgement
When tach signal is greater than the rotational speed criteria value, into next step；Otherwise it is run according to throttle normal response；
Step 6: the electronic control unit ECU judges that engine needs to enter transient response state, i.e.,：
The closed throttle is controlled, the anti-surge valve is opened, the air for entering the normal air supply channel passes through
The anti-surge blow off pipe discharge；The air intake valve and the outlet valve are opened simultaneously, makes the compression in the air accumulator
Air flows into the inlet manifold, and the combustion gas that compressed air introduces in the gas mixer with the gas supply pipe is mixed
It closes, mixed gas, which subsequently enters, lights fuel acting in the cylinder of engine；Air pressure in the air accumulator in the process
Power is higher, and the electronic control unit ECU controls the aperture variation of the outlet valve, reaches the pressure of the inlet manifold and ties up
It holds in target value, avoids pressurization sluggish, make the engine short time that can export biggish torque, complete a subtransient of engine
Response；
Step 7: the electronic control unit ECU controls the outlet valve and closes, while controlling institute after the completion of transient response
Anti-surge valve closing is stated, the air throttle is gradually opened, and so that engine is smoothly transitted normal throttle response operating status, simultaneously
The monitoring of the electronic control unit ECU is jumped into step 2 to recycle and be carried out.
The opening amount signal standard value may be configured as any one percentage in 25~35% as a preferred technical solution,
Value；The pedal rate of change standard value is at least 100%/s.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows：It is logical using normal gas supply when operating normally
Road is that engine is supplied when electronic control unit ECU needs transient response according to the judgement of each detection parameters into transient response for combustion gas
Gaseity, i.e., using transient response air supply channel provide combustion gas, while open anti-surge valve will continue the air being passed through discharge, from
And reaching improves air supply, and engine air air inflow is quickly improved in the short time, improves engine transient response performance；Separately
Outside, by optimizing the matching of air compressor, increase compressed air memory space, cooperate air throttle and anti-surge valve control, have
Help improve the transient response characteristic of engine, action time continues short, engine gas supply seamless switching after transient response
Normal air-suction state is returned, to optimize the loading characteristic of gas engine machinery.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein：
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the simple control flow chart of the electronic control unit ECU of the embodiment of the present invention；
In figure：1- inlet manifold；2- fuel gas injection valve；3- gas mixer；4- engine；5- throttle position switch；
6- speed probe；7- electronic control unit ECU；8- air manifold；9- air throttle；10- anti-surge blow off pipe；11- anti-surge valve；
12- air compressor；13- air accumulator；14- pressure sensor；15- air intake valve；16- outlet valve；The gas gas storage of 17- vehicle
Tank.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize,
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
As depicted in figs. 1 and 2, improve natural gas engine transient response device, including be connected on engine 4 into
Gas general pipeline 1, the inlet end of the inlet manifold 1 are connected with normal air supply channel, are communicated with combustion gas on the normal air supply channel
Air supply pipe is serially connected with fuel gas injection valve 2 on the gas supply pipe, and the outlet side of the inlet manifold 1 is connected to engine 4
Cylinder, the normal air supply channel are also communicated with transient response air supply channel.Under normal circumstances, the normal air supply channel is
The engine 4 provides air, and enters in the inlet manifold 1 with combustion gas mixing that the gas supply pipe is sent, with
It is used for 4 work by combustion of engine；Air is provided by the transient response air supply channel when engine needs transient response,
The inlet end of engine 4 is formed with two air inlet routes.
The transient response characteristic for improving engine also needs throttle position switch for detecting gas pedal aperture
5, the normal air supply channel, the transient response air supply channel, described for detecting the speed probe 6 of engine speed
Throttle position switch 5 and the speed probe 6 are respectively connected to the electronic control unit ECU7 of engine 4, and the engine 4 exists
It needs to operate normally in operational process and still needs transient response, believed by the electronic control unit ECU7 according to accelerator pedal position
Number, the tach signal of engine etc. carry out calculation processing, and finally obtain control command, control the normal air supply channel, institute
The corresponding component movement cooperation in transient response air supply channel is stated, the bumpless transfer of working condition is completed.Each sensor with it is described
The structural principle of signal communication mode and the electronic control unit ECU7 between electronic control unit ECU7 is general in the art
Content known to logical technical staff, is no longer described in detail herein.
Specifically, the normal air supply channel includes air manifold 8, is equipped with air throttle on the air manifold 8
9, the air throttle 9, which goes out on the air manifold 8 of gas side, is equipped with gas mixer 3, and the gas supply pipe connection exists
On the gas mixer 3, anti-surge blow off pipe 10, institute are communicated on the air manifold 8 of 9 air inlet side of air throttle
It states and anti-surge valve 11 is installed on anti-surge blow off pipe 10, the anti-surge valve 11 is switching mode valve, the anti-surge valve 11
It is connected separately with the air throttle 9 to the electronic control unit ECU7.Under normal operating condition, when air throttle 9, is opened
And open degree is adjusted according to the operating status of engine 4 in real time, and the anti-surge valve 11 is to close, and air is avoided to be lost,
When needing transient response, the electronic control unit ECU7 can control the air throttle 9 and close, and controls the anti-surge valve 11 and opens
It opens, the air continually entered is discharged, avoid forming transient response and interfere, improve the accuracy of response.
The embodiment of the present invention transient response air supply channel includes air compressor 12, the outlet of the air compressor 12
End is connected with air accumulator 13, and the air accumulator 13 in the air accumulator 13 by pacifying on pipeline connection to the gas mixer 3
Equipped with pressure sensor 14, air intake valve 15,13 outlet of air accumulator are installed on the pipeline of 13 inlet end of air accumulator
Outlet valve 16 is installed, the pressure sensor 14, the air intake valve 15 and the outlet valve 16 are divided on the pipeline at end
It is not connected to the electronic control unit ECU7, the air intake valve 15 is set as switching mode valve, and the outlet valve 16 is set as
Aperture adjustable type valve.When operating normally, what when outlet valve 16 closed, the electronic control unit ECU7 is according to
The signal that pressure sensor 14 detects adjusts the opening and closing of the air intake valve 15, for adjusting the air pressure of the air accumulator 13
Power, to guarantee in transient response, the air accumulator 13 can have enough air to complete response task.Each valve is electronics
Valve can the control signal of the electronic control unit ECU7 based on the received carry out corresponding switching motion.
The air compressor 12 can be set to the compressor carried on engine 4；Certainly, the air compressor 12
It may be set to be free-standing compressor, 12 belt of air compressor is sequentially connected to the power output of the engine 4
End.It can also be arranged in parallel carload gas air accumulator 17 with the air accumulator 13, stopped for vehicle gas.
The specific response method of the device of above-mentioned raising natural gas engine transient response includes the following steps：
Step 1: starting the engine 4 and the electronic control unit ECU7.
Step 2: the air pressure in air accumulator 13 described in 14 real-time detection of pressure sensor, and pressure signal is transmitted
To the electronic control unit ECU7, it is stored with pressure criteria value in the electronic control unit ECU7, which can basis
It controls precision and carries out appropriate adjustment, when the pressure signal that electronic control unit ECU7 judgement detects is greater than the pressure criteria value
When, into next step；Otherwise the electronic control unit ECU7 controls the air intake valve 15 and opens, and utilizes the air compressor 12
For 13 inflating pressure of air accumulator, and run according to throttle normal response.
Step 3: the opening amount signal of the 5 real-time detection gas pedal of throttle position switch, and opening amount signal is conveyed
To the electronic control unit ECU7, it is stored with opening amount signal standard value in the electronic control unit ECU7, when the electronic control unit
When the opening amount signal that ECU7 judgement detects is less than the opening amount signal standard value, into next step；Otherwise normal according to throttle
Response operation.The opening amount signal standard value may be configured as any one percentage value in 25~35%, described in the present embodiment
Opening amount signal standard value is set as 30%, when the opening amount signal that electronic control unit ECU7 judgement detects is less than 30%, into
Enter in next step.
Step 4: the gas pedal opening amount signal that the electronic control unit ECU7 is arrived according to real-time reception, and stepped on according to throttle
The opening amount signal of plate calculates pedal rate of change, is stored with pedal rate of change standard value in the electronic control unit ECU, works as pedal
When change rate >=pedal rate of change standard value, into next step；Otherwise it is run according to throttle normal response, it is described in this step
Pedal rate of change standard value is at least 100%/s.
Step 5: the revolving speed of the 6 real-time detection engine of speed probe, and tach signal is delivered to described automatically controlled
Unit ECU7 is stored with tach signal standard value in the electronic control unit ECU7, which can be according to control
Precision processed carries out appropriate adjustment, when the tach signal that electronic control unit ECU7 judgement detects is greater than the rotational speed criteria value
When, into next step；Otherwise it is run according to throttle normal response.
Step 6: the electronic control unit ECU7 judges that engine 4 needs to enter transient response state, i.e.,：Control the section
Valve 9 is closed, and the anti-surge valve 11 is opened, and the air for entering the normal air supply channel passes through the anti-surge blow off pipe
10 discharges；The air intake valve 15 and the outlet valve 16 are opened simultaneously, flows into the compressed air in the air accumulator 13
To the inlet manifold 1, the combustion gas mixing that compressed air introduces in the gas mixer 3 with the gas supply pipe is mixed
It closes gas and subsequently enters and light fuel acting in the cylinder of engine 4, in the process the air pressure in the air accumulator 13
Higher, the electronic control unit ECU7 controls the aperture variation of the outlet valve 16, reaches the pressure of the inlet manifold 1 simultaneously
Target value is maintained, avoids pressurization sluggish, makes the engine short time that can export biggish torque, complete a wink of engine
State response.
Step 7: the electronic control unit ECU7 controls the outlet valve 16 and closes after the completion of transient response, control simultaneously
The anti-surge valve 11 is closed, and the air throttle 9 is gradually opened, and engine is made to smoothly transit normal throttle response operation shape
State, while the monitoring of the electronic control unit ECU7 is jumped into step 2 to recycle and be carried out.
The present invention is engine for combustion gas using normal air supply channel when operating normally, when electronic control unit ECU7 according to
When each detection parameters judgement needs transient response, into transient response for gaseity, i.e., provided using transient response air supply channel
Combustion gas, while opening anti-surge valve 11 and will continue the air being passed through discharge, so that reaching improves air supply, in the short time quickly
Engine air air inflow is improved, engine transient response performance is improved；In addition, by the matching of optimization air compressor 12,
Increase compressed air memory space, air throttle 9 and anti-surge valve 11 is cooperated to control, the transient response for helping to improve engine is special
Property, action time is lasting short, and engine gas supply seamlesslyes switch back to normal air-suction state after transient response, to optimize combustion gas
The loading characteristic of engine machinery.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. the device of natural gas engine transient response is improved, including the inlet manifold being connected to the engine, it is characterised in that：
The inlet end of the inlet manifold is connected with normal air supply channel, and gas supply pipe, institute are communicated on the normal air supply channel
State and be serially connected with fuel gas injection valve on gas supply pipe, the outlet side of the inlet manifold is connected to the cylinder of engine, it is described just
Normal air supply channel is also communicated with transient response air supply channel, further includes the throttle position sensor for detecting gas pedal aperture
Device, the speed probe for detecting engine speed, it is the normal air supply channel, the transient response air supply channel, described
Throttle position switch and the speed probe are respectively connected to the electronic control unit ECU of engine；
The normal air supply channel includes air manifold, and air throttle is equipped on the air manifold, and the air throttle goes out
Gas mixer is installed on the air manifold of gas side, the gas supply pipe is connected on the gas mixer,
It is communicated with anti-surge blow off pipe on the air manifold of the throttle inflow side, is equipped on the anti-surge blow off pipe
Anti-surge valve, the anti-surge valve and the air throttle are connected separately to the electronic control unit ECU；
The transient response air supply channel includes air compressor, and the outlet side of the air compressor is connected with air accumulator, institute
Air accumulator is stated by being equipped with pressure sensor, the gas storage in the air accumulator on pipeline connection to the gas mixer
Air intake valve is installed on the pipeline at canister incoming gas end, outlet valve, the pressure are installed on the pipeline of the air accumulator outlet side
Force snesor, the air intake valve and the outlet valve are respectively connected to the electronic control unit ECU.
2. improving the device of natural gas engine transient response as described in claim 1, it is characterised in that：The anti-surge valve
It is respectively set to switching mode valve with the air intake valve, the outlet valve is set as aperture adjustable type valve.
3. improving the device of natural gas engine transient response as claimed in claim 1 or 2, it is characterised in that：The air
Compressor is the compressor carried on engine.
4. improving the device of natural gas engine transient response as claimed in claim 1 or 2, it is characterised in that：The air
Compressor is free-standing compressor, and the air compressor belt is sequentially connected to the power output end of the engine.
5. using the response method of the device as described in claim 1 for improving natural gas engine transient response, feature exists
In：Include the following steps,
Step 1: starting the engine and the electronic control unit ECU；
Step 2: the air pressure in air accumulator described in the pressure sensor real-time detection, and pressure signal is sent to the electricity
Unit ECU is controlled, is stored with pressure criteria value in the electronic control unit ECU, when the electronic control unit ECU judges the pressure detected
When force signal is greater than the pressure criteria value, into next step；Otherwise the electronic control unit ECU controls the air intake valve and opens
It opens, is the air accumulator inflating pressure using the air compressor, and run according to throttle normal response；
Step 3: the opening amount signal of the throttle position switch real-time detection gas pedal, and opening amount signal is delivered to institute
Electronic control unit ECU is stated, is stored with opening amount signal standard value in the electronic control unit ECU, when the electronic control unit ECU judges to examine
When the opening amount signal measured is less than the opening amount signal standard value, into next step；Otherwise it is run according to throttle normal response；
Step 4: the gas pedal opening amount signal that the electronic control unit ECU is arrived according to real-time reception, and opening according to gas pedal
Degree signal calculates pedal rate of change, is stored with pedal rate of change standard value in the electronic control unit ECU, works as pedal rate of change
When >=pedal rate of change standard value, into next step；Otherwise it is run according to throttle normal response；
Step 5: the revolving speed of the speed probe real-time detection engine, and tach signal is delivered to the electronic control unit
ECU is stored with tach signal standard value in the electronic control unit ECU, when the electronic control unit ECU judges the revolving speed detected
When signal is greater than the rotational speed criteria value, into next step；Otherwise it is run according to throttle normal response；
Step 6: the electronic control unit ECU judges that engine needs to enter transient response state, i.e.,：
The closed throttle is controlled, the anti-surge valve is opened, the air for entering the normal air supply channel passes through described
The discharge of anti-surge blow off pipe；The air intake valve and the outlet valve are opened simultaneously, makes the compressed air in the air accumulator
Flow into the inlet manifold, the combustion gas mixing that compressed air introduces in the gas mixer with the gas supply pipe,
Mixed gas, which subsequently enters, lights fuel acting in the cylinder of engine；In the process the air pressure in the air accumulator compared with
Height, the electronic control unit ECU control the aperture variation of the outlet valve, reach the pressure of the inlet manifold and maintain
Target value avoids pressurization sluggish, makes the engine short time that can export biggish torque, and the subtransient for completing engine is rung
It answers；
Step 7: the electronic control unit ECU controls the outlet valve and closes after the completion of transient response, while controlling described anti-
Surge valve is closed, and the air throttle is gradually opened, and so that engine is smoothly transitted normal throttle response operating status, while described
The monitoring of electronic control unit ECU is jumped into step 2 to recycle and be carried out.
6. improving the response method of the device of natural gas engine transient response as claimed in claim 5, it is characterised in that：Institute
Stating opening amount signal standard value may be configured as any one percentage value in 25~35%；
The pedal rate of change standard value is at least 100%/s.
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| CN201810752387.4A CN108825391B (en) | 2018-07-10 | 2018-07-10 | Device for improving transient response of natural gas engine and response method thereof |
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| CN201810752387.4A CN108825391B (en) | 2018-07-10 | 2018-07-10 | Device for improving transient response of natural gas engine and response method thereof |
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| CN109826729A (en) * | 2019-01-08 | 2019-05-31 | 四川柯瑞泰内燃机制造有限公司 | A kind of engine intelligent variable compression ratio system and method |
| CN110056440A (en) * | 2019-04-09 | 2019-07-26 | 潍柴西港新能源动力有限公司 | The efficient transient response device of low-pressure fuel gas generating set and its response control mehtod |
| CN111075584A (en) * | 2019-12-31 | 2020-04-28 | 潍柴动力股份有限公司 | Method and device for determining air inflow of engine, storage medium and electronic equipment |
| CN112065597A (en) * | 2020-09-16 | 2020-12-11 | 潍柴动力股份有限公司 | Engine air supplement control method, engine system and control equipment |
| CN112697443A (en) * | 2020-12-08 | 2021-04-23 | 西华大学 | Experimental device and method for simulating transient change of exhaust flow under starting and accelerating conditions of engine |
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