CN109458253A - Air compensating system and gas supply control method - Google Patents
Air compensating system and gas supply control method Download PDFInfo
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- CN109458253A CN109458253A CN201811518368.1A CN201811518368A CN109458253A CN 109458253 A CN109458253 A CN 109458253A CN 201811518368 A CN201811518368 A CN 201811518368A CN 109458253 A CN109458253 A CN 109458253A
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- tonifying
- diesel engine
- compensating system
- air
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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
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The present invention provides a kind of air compensating systems and gas supply control method, for the generating set including diesel engine and generator, diesel engine provides driving force to generator, diesel engine is provided at least two cylinders, diesel engine is sent into air at least two cylinders by turbocharger, the at least two inlet manifold roads for being provided with air inlet main line between the air taking port of turbocharger and at least two cylinders and being respectively communicated with at least two cylinders, air compensating system include the tonifying Qi compressor and tonifying Qi pipeline for compressed air；The input terminal of tonifying Qi pipeline is connected to tonifying Qi compressor, and the output end of tonifying Qi pipeline is connected to at least two inlet manifold roads respectively, so that air directly respectively enters corresponding cylinder via at least two inlet manifold roads.Air compensating system provided by the invention enables the air in air compensating system to be directly entered inlet manifold road to rapidly enter in cylinder, can reduce the surge of the compressor in turbocharger.
Description
Technical field
The present invention relates to Diesel Engine Technique Fields, and relate more specifically to a kind of air compensating system and gas supply control method.
Background technique
Turbo-charged diesel is in low- load conditions during acceleration/loading condition, it may appear that turbo lag phenomenon.Tool
Situations such as body shows as dynamic property variation, accelerates slowly, over-emitting black exhaust.This is because after diesel engine external loading increase, diesel engine
It can not be caused by the matched torque of output phase.Although existing diesel engine is after operating it using electronic control system, fuel oil
System can quickly react, and export corresponding oil mass, still, pressure charging system in the process, due to booster rotary inertia
With the reasons such as the compressibility of gas in air inlet system and exhaust system, turbo charge system can not quick response, enough air inflows are provided,
Excess air coefficient drops sharply to a lower value at this time, and in-cylinder combustion deteriorates, and power index reduces, and discharge index becomes
Difference, especially soot emissions sharply increase.
Based on this, existing diesel engine would generally be when turbo lag phenomenon occurs, to air inlet system by tonifying Qi technology
Enough air inflows are supplemented in system, make to have enough air in cylinder so that burning be normally carried out, the dynamic of Optimization of Diesel Engine
Performance and instantaneous emission.But existing tonifying Qi technique is usually the pressure being directly connected to tonifying Qi pipeline in turbocharger
Mechanism of qi shell, since gas directly impacts blade, it is thus impossible to using excessively high superfeed pressure, and gas need to flow through compressor,
It just can enter cylinder after the components such as inlet manifold, the tonifying Qi intervention combustion process time is longer, and effect is unobvious.Existing tonifying Qi work
Skill, when the gas of supplement enters inlet manifold, is held there are also tonifying Qi pipeline is directly connected to inlet manifold if air pressure is excessively high
Easily cause compressor surge.
Therefore, it is necessary to a kind of air compensating systems and gas supply control method, existing in the prior art at least to be partially solved
Problem.
Summary of the invention
A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into
One step is described in detail.Summary of the invention is not meant to attempt to limit technical solution claimed
Key feature and essential features do not mean that the protection scope for attempting to determine technical solution claimed more.
In order at least be partially solved the above problem, according to an aspect of the invention, there is provided a kind of air compensating system, is used
In the generating set including diesel engine and generator, the diesel engine provides driving force to the generator, and the diesel engine is set
At least two cylinders are equipped with, the diesel engine is sent into air, the turbine at least two cylinder by turbocharger
It is provided with air inlet main line between the air taking port of booster and at least two cylinder and distinguishes at least two cylinder
At least two inlet manifold roads of connection, air compensating system include:
Tonifying Qi compressor is used for compressed air；And
Tonifying Qi pipeline, the input terminal of the tonifying Qi pipeline are connected to the tonifying Qi compressor, the output of the tonifying Qi pipeline
End is connected to at least two inlet manifold road respectively, so that the air is direct via at least two inlet manifold road
Respectively enter the corresponding cylinder.
According to this programme, since the output end of tonifying Qi pipeline is connected directly to the inlet manifold road being connected to cylinder, so that
Air in air compensating system can be directly entered inlet manifold road to rapidly enter in cylinder, can reduce in turbocharger
Compressor surge.And due to being provided with tonifying Qi compressor, allow to fill into compressed pressure into cylinder higher
Air.
Optionally, the output end of the tonifying Qi pipeline is provided with the injection apparatus corresponding to each inlet manifold road,
The air enters the inlet manifold road via the injection apparatus.
Optionally, the air compensating system further includes decompressor and the gas storage that tonifying Qi compressor downstream is arranged in
Device, the decompressor are arranged between the tonifying Qi compressor and the gas storage device.
Optionally, the caliber of the tonifying Qi pipeline close to the gas storage device exit from large to small.
Optionally, the tonifying Qi pipeline is provided with safety valve in the downstream of the gas storage device.
Optionally, the air compensating system includes control unit, and described control unit is configured to the fortune according to the diesel engine
Row load and/or load load amplitude and make the air compensating system to the diesel engine tonifying Qi.
Optionally, described control unit is configured to control the benefit when the operating load is more than or equal to load preset value
Gas system is not to the diesel engine tonifying Qi.
Optionally, described control unit is configured to be less than load preset value and the load load amplitude when the operating load
The air compensating system is not to the diesel engine tonifying Qi when degree is less than load load amplitude preset value.
Optionally, described control unit is configured to be less than load preset value and the load load amplitude when the operating load
The air compensating system is to the diesel engine tonifying Qi when degree is more than or equal to load load amplitude preset value.
Optionally, described control unit is configured to control the air compensating system according to the load load amplitude to described
The tonifying Qi cycle-index of diesel engine tonifying Qi.
Optionally, described control unit be further configured such that the air compensating system in the air inlet of the diesel engine to
The diesel engine tonifying Qi, and the tonifying Qi of the IO Intake Valve Opens foregoing description air compensating system in the diesel engine starts, described
The tonifying Qi of the IC Intake Valve Closes foregoing description air compensating system of diesel engine stops.
According to another aspect of the present invention, a kind of gas supply control method is provided, for use according to above-mentioned technical side
The generating set including diesel engine and generator of air compensating system described in either side in case, the diesel engine is to the power generation
Machine provides driving force, and the gas supply control method includes the following steps:
Judge loading area step, the operating load of the diesel engine is compared with load preset value, to judge
Air compensating system is stated whether to the diesel engine tonifying Qi.
According to this programme, tentatively judge to mend using the load signal for the diesel engine being calculated by generator load signal
Whether gas system compared to existing tach signal using diesel engine judges side that whether tonifying Qi carry out to diesel engine tonifying Qi
Formula, tonifying Qi reaction of the invention are sensitiveer.
Optionally, in judging loading area step, when the operating load is more than or equal to the load preset value, institute
Air compensating system is stated not to the diesel engine tonifying Qi.
It optionally, further include judging that the judgement after loading area step loads load amplitude steps described, it will be described
Whether the load load amplitude of diesel engine is compared with load load amplitude preset value, to judge the air compensating system to described
Diesel engine tonifying Qi.
Optionally, in judging loading area step, when the operating load is less than the load preset value, institute is carried out
State judgement load load amplitude steps.
Optionally, it in judgement load load amplitude steps, is born when the load load amplitude is less than the load
When lotus amplitude preset value, the air compensating system is not to the diesel engine tonifying Qi.
Optionally, in judgement load load amplitude steps, when the load load amplitude is more than or equal to described add
When loading with lotus amplitude preset value, the air compensating system is to the diesel engine tonifying Qi.
Optionally, it controls the air compensating system according to the load load amplitude and is followed to the tonifying Qi of the diesel engine tonifying Qi
Ring number.
Optionally, make the air compensating system to the diesel engine tonifying Qi by controlling the unlatching of tonifying Qi nozzle.
Detailed description of the invention
Following drawings of the invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Shown in the drawings of this hair
Bright embodiment and its description, device used to explain the present invention and principle.In the accompanying drawings,
Fig. 1 is according to the structural schematic diagram of the air compensating system of the preferred embodiment of the present invention, wherein also showing diesel oil
The structure of machine；
Fig. 2 is the connection relationship diagram according to the control unit of the air compensating system of the preferred embodiment of the present invention；
Fig. 3 is the flow diagram according to the gas supply control method of the preferred embodiment of the present invention；
Fig. 4 is the tonifying Qi cycle-index interpolation table of the gas supply control method for Fig. 3；
Fig. 5 is an embodiment of tonifying Qi cycle-index interpolation table；And
Fig. 6 be air compensating system the tonifying Qi stage relative to diesel engine charging stage time axis schematic diagram, wherein with
Crank angle is as time reference.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
In order to thoroughly understand the present invention, detailed structure will be proposed in following description, to illustrate the present invention.It is aobvious
So, execution of the invention is not limited to the specific details that the those skilled in the art are familiar with.Preferable reality of the invention
The mode of applying is described in detail as follows, however other than these detailed descriptions, the present invention can also have other embodiments, should not
It is construed as limited to the embodiments set forth herein.
It should be understood that the purpose of term as used herein is only that description specific embodiment and not as this hair
Bright limitation, " one " of singular, "one" and " described/should " be also intended to include plural form, unless context understands finger
Other mode out.When the term " comprising " and/or " including " is used in this specification, indicate that there are the features, whole
Body, step, operation, element and/or component, but do not preclude the presence or addition of one or more other features, entirety, step, behaviour
Work, element, component and/or their combination.Term " on " used in the present invention, "lower", "front", "rear", "left", "right"
And similar statement is for illustrative purposes only, not limits.
The cited such as ordinal number of " first " and " second " is only to identify in the present invention, without any other
Meaning, such as specific sequence etc..Moreover, for example, term " first component " itself does not imply that the presence of " second component ", art
Language " second component " does not imply that the presence of " first component " in itself.
Hereinafter, a specific embodiment of the invention is described in more detail with reference to the accompanying drawings, those figures show
Representative embodiment of the invention is not to limit the present invention.
As shown in Figure 1, the present invention provides a kind of air compensating system, for including diesel engine 100 and generator 200 (Fig. 2)
Generating set, specifically, the air compensating system be used for diesel engine 100 carry out tonifying Qi, it is shown in FIG. 1 as a result, to show embodiment
The structure of diesel engine 100 is only shown.It is appreciated that diesel engine 100 can be connect with generator 200, and mentioned to generator 200
For driving force.
Due to diesel engine 100 and the respective structure of generator 200 and mutual connection type be it is existing, for brevity
No longer it is described in detail.In present embodiment, diesel engine 100 is provided at least two cylinders 110, and diesel engine 100 passes through turbocharger
120 are sent into air at least two cylinders 110.It is provided between the air taking port of turbocharger 120 and at least two cylinders 110
Air inlet main line L1 and at least two inlet manifold road L2 being respectively communicated with at least two cylinders 110.Inlet manifold road L2 with
Cylinder 110 corresponds.Specifically, at least two cylinders 110 are arranged side by side, herein, it will be understood that as shown in Figure 1, working as cylinder
Two column can be set into 110 quantity when more, the cylinder 110 of each column is arranged side by side.Turbocharger 120 includes turbine gas
Press 121 and booster 122.The compressed air of the air taking port output of turbine aerostatic press 121 is successively via air inlet main line L1, each
A inlet manifold road L2 enters corresponding cylinder 110.In the shown embodiment, air inlet main line L1 is additionally provided with air cooler
130。
Air compensating system includes the tonifying Qi pipeline L3 for the tonifying Qi compressor 310 of compressed air and for conveying air.It mends
The input terminal of air pipe L3 is connected to tonifying Qi compressor 310, the output end of tonifying Qi pipeline L3 respectively at least two inlet manifold
L2 connection in road after air first passes through the compression of tonifying Qi compressor 310, is then entered to via tonifying Qi pipeline L3 in this embodiment
Few two inlet manifold road L2, so as to directly respectively enter corresponding cylinder 110.Specifically, tonifying Qi pipeline L3 includes mending
Gas main line L31 and tonifying Qi manifold road L32.Tonifying Qi main line L31 is branched into and at least two tonifying Qi at each cylinder 110
Manifold road L32.Tonifying Qi manifold road L32 and inlet manifold road L2 is corresponded.It is appreciated that above-mentioned output end is by each tonifying Qi manifold
Road L32 is formed.
Each tonifying Qi manifold road L32 is both provided with the injection apparatus 320 corresponding to each inlet manifold road L2, air via
Injection apparatus 320 is injected into inlet manifold road L2, in this embodiment, can reduce the impact of air stream.Optionally, it illustrates
It is tonifying Qi nozzle that injection apparatus 320 is shown in embodiment.
Air compensating system further includes the decompressor 330 and gas storage device 340 that 310 downstream of tonifying Qi compressor is arranged in,
Decompressor 330 is arranged between tonifying Qi compressor 310 and gas storage device 340.The air that tonifying Qi compressor 310 compresses can
It is decompressed to after suitable superfeed pressure with the effect by decompressor 330 and is delivered to cylinder 110 again.Superfeed pressure generally can be with
It is 10bar~15bar.Gas storage device is used to store the air after decompression, can make the gas in air compensating system in this way
Pressure is stablized.Optionally, decompressor 330 can be pressure reducing valve, and gas storage device can be storage cylinder.
The caliber of tonifying Qi pipeline L3 can close to gas storage device 340 exit from large to small.Specifically, tonifying Qi
The variable diameter component 350 of caliber decrement, such as, reducer pipe can be set on main line L31.The variable diameter component 350 is arranged in gas
The downstream of body storage device 340 is increased from the air of the outlet output of gas storage device 340 by flow velocity after variable diameter component 350
Add.Tonifying Qi pipeline L3 is also provided with safety valve 360 in the downstream of gas storage device 340, when superfeed pressure is no more than peace
When the secure threshold of full valve 360, safety valve 360 is in close state, when superfeed pressure is more than the secure threshold of safety valve 360
When, safety valve 360 opens gas and is leaked from safety valve 360 to external environment.In the shown embodiment, safety valve 360 is set
It sets in the downstream of variable diameter component 350.
It should be noted that in addition to injection apparatus 320 is arranged on tonifying Qi manifold road L32 in air compensating system, other devices,
Decompressor 330, gas storage device 340 etc. are arranged on tonifying Qi main line L31.
Further, as shown in Fig. 2, air compensating system can also include control unit 370, control unit 370 can with it is upper
Injection apparatus 320 in diesel engine 100, generator 200 and the air compensating system stated is associated with, and interrelational form can be electrical connection.
Control unit 370 can receive the load signal for carrying out self generator 200, and by the load signal operation of generator 200 and defeated
It is out the operating load of diesel engine 100 (the current operating load of diesel engine 100 before loading).Control unit 370 can also connect
The crankshaft signal (signal for referring to the crankshaft connecting with cylinder 110) from diesel engine 100 is received, and can be obtained from crankshaft signal
It obtains the tach signal of diesel engine 100 and exports the revolving speed for diesel engine 100.
Control unit 370 can also send control signal (i.e. tonifying Qi nozzle signal) to injection apparatus 320 to control injection
Whether device 320 is opened, i.e., makes air compensating system to 100 tonifying Qi of diesel engine by controlling the unlatching of tonifying Qi nozzle, when tonifying Qi is sprayed
When mouth is closed, stop tonifying Qi.The size of air compensation depends on the opening time of tonifying Qi nozzle.Air compensating system is also provided with use
In the pressure detector (not shown) of detection superfeed pressure.Pressure detector can be set on gas storage device 340.At this
In embodiment, the signal that control unit 370 may also receive from pressure detector carries out real-time monitoring to superfeed pressure.
In the present embodiment, control unit 370 is configured to operating load and/or load load according to diesel engine 100
Amplitude and make air compensating system to 100 tonifying Qi of diesel engine.
Specifically, with reference to Fig. 3 and Fig. 4, control unit 370 is configured to bear when the operating load of diesel engine 100 is more than or equal to
Air compensating system is controlled when lotus preset value A not to 100 tonifying Qi of diesel engine.That is, diesel engine 100 operating load be greater than etc.
In the case where load preset value A, diesel engine 100 can not have to the currently running need that tonifying Qi also can satisfy diesel engine 100
It asks.It follows that the air compensating system can not have to tonifying Qi in 100 operating load with higher of diesel engine.It needs to illustrate
It is that load preset value A is preset definite value as needed, load preset value A can be set as needed as 40~
Numerical value between 50%, such as can be 40%, 45% or 50%.
Control unit 370 be configured to when the operating load of diesel engine 100 be less than load preset value A and diesel engine 100 plus
Air compensating system is not to 100 tonifying Qi of diesel engine when loading with lotus amplitude less than load load amplitude preset value B0.That is, in diesel oil
The operating load of machine 100 is less than load preset value A and the load load amplitude of diesel engine 100 is less than load load amplitude preset value
In the case where B0, diesel engine 100 can not have to the currently running demand that tonifying Qi also can satisfy diesel engine 100.It follows that
The air compensating system has the not necessarily tonifying Qi of lower operating load in diesel engine 100, it is also necessary to negative according to the load of diesel engine 100
The size of lotus amplitude is to determine whether tonifying Qi, can not mend when the load load amplitude of diesel engine 100 is smaller to diesel engine 100
Gas.It should be noted that load load amplitude is that (operating load that diesel engine 100 reaches after load shows in Fig. 3 load load
Out it is target load) the resulting numerical value of operating load is subtracted, such as operating load is 10%, load load is 40%, this adds
Loading with lotus amplitude is 30%；Load load amplitude preset value B0 is preset definite value as needed, the load load amplitude
Preset value B0 can be set as needed as the numerical value between 10~20%, such as can be 10%, 15% or 20%.
Control unit 370 be configured to when the operating load of diesel engine 100 be less than load preset value A and diesel engine 100 plus
Air compensating system is loaded with when lotus amplitude is more than or equal to load load amplitude preset value B0 to 100 tonifying Qi of diesel engine.In present embodiment,
Air compensating system is set to need two conditions of satisfaction simultaneously to 100 tonifying Qi of diesel engine, one is that the operating load of diesel engine 100 is less than
Load preset value A, the other is the load load amplitude of diesel engine 100 is more than or equal to load load amplitude preset value B0.Also
It is to say, just needs when the operating load of diesel engine 100 is lower and load load amplitude is larger to 100 tonifying Qi of diesel engine.
The air compensating system of present embodiment enables air compensating system in diesel engine 100 by the operation of control unit 370
Loading procedure in realize quick tonifying Qi, so that the air of supplement, which can rapidly enter, participates in combustion process in cylinder 110.It compares
In the existing air compensating system for carrying out tonifying Qi as long as diesel engine 100 loads, the air compensating system of present embodiment can obviously subtract
The discharge of soot is effectively reduced thus, it is possible to effectively reduce the volume of gas storage device 340 in the air compensation of few air.And
Loading procedure can be made soft and controllable.
Further, control unit 370 is also configured as the load load amplitude according to diesel engine 100 and controls tonifying Qi
Tonifying Qi cycle-index of the system to 100 tonifying Qi of diesel engine.It should be noted that " tonifying Qi cycle-index " herein refers to diesel engine
The 100 cycle-index N that can be completed during tonifying Qi.For example, for 4 stroke diesel engines 100, the course of work can be divided into
In 4 stages of air inlet, compression, expansion, exhaust, diesel engine 100 completes the above process, and once referred to as diesel engine 100 is completed once to follow
Ring.Diesel engine 100 completes one cycle, and 2 turns of the crank rotation connecting with cylinder 110 turns over 720 DEG C of A.Control unit 370 can
To judge which of 4 stages in circulation cycle-index that diesel engine 100 is completed and diesel engine 100 are according to crankshaft signal
In a stage.
In present embodiment, control unit 370 be further configured such that air compensating system diesel engine 100 charging stage to bavin
100 tonifying Qi of oil machine.Specifically, after injection apparatus 320 receives the tonifying Qi nozzle signal from control unit 370, and in diesel oil
When the charging stage of machine 100, injection apparatus 320 is opened with to 100 tonifying Qi of diesel engine.In the compression, expansion and row of diesel engine 100
In the stage of gas, injection apparatus 320, which is closed, to be stopped to 100 tonifying Qi of diesel engine.
Optionally, as shown in fig. 6, control unit 370 be further configured such that diesel engine 100 IO Intake Valve Opens it
The tonifying Qi of preceding air compensating system starts, and the tonifying Qi of air compensating system stops before the IC Intake Valve Closes of diesel engine 100.In diesel oil
In one cyclic process of machine 100, crank angle is to turn to 720 DEG C of A from 0 DEG C of A.Tonifying Qi start time corresponding crank angle
α 1 is less than IO Intake Valve Opens moment corresponding crank angle α 2.Optionally, the difference of α 1 and α 2 can be less than or equal to 10 DEG C of A.
For example, the difference of α 1 and α 2 can be 10 DEG C of A.Tonifying Qi stop timing corresponding crank angle α 3 is less than the IC Intake Valve Closes moment pair
The crank angle α 4 answered.Optionally, the difference of α 3 and α 4 can be less than or equal to 10 DEG C of A.For example, the difference of α 3 and α 4 can be
10℃A。
The tonifying Qi cycle-index of present embodiment needs to obtain by tonifying Qi cycle-index interpolation table shown in Fig. 4.
Furtherly, control unit 370, which is able to respond, calculates tonifying Qi cycle-index in tonifying Qi cycle-index interpolation table, to control
The size of tonifying Qi cycle-index.It includes the pre- of load load amplitude preset value B0 that n are provided in tonifying Qi cycle-index interpolation table
If load load range parameter, herein n be more than or equal to zero.For example, in embodiment shown in Fig. 4, including the first load
Load range parameter B1, the second load load range parameter B2, the third load load amplitude of load load range parameter B3 and the 4th
Spend parameter B4.And B4 > B3 > B2 > B1 > B0.Furtherly Bn is increase with n and incremental sequential value.Wherein, Bn
Corresponding loading speed is Bn/10ms.
A in tonifying Qi cycle-index interpolation table refers to above-mentioned load preset value.It is also set in tonifying Qi cycle-index interpolation table
N and the one-to-one tonifying Qi cycle-index Cn+1 of Bn are set.For example, C1, C2, C3, C4 and C5 shown in figure.C1,C2,…
The numerical value of Cn+1, which can according to need, is set as numerical value different or that part is different.
Fig. 5 schematically illustrates an embodiment of tonifying Qi cycle-index interpolation table, wherein load preset value A is
50%.Loading load amplitude preset value B0 is 10%.Load load range parameter B1 is 20%, B2 30%, B3 40%, B4
It is 100%.Tonifying Qi cycle-index C1 is 10, C2 20, and C3, C4 and C5 are 30.For passing through tonifying Qi cycle-index interpolation table
It will be discussed in more detail below to obtain the content of tonifying Qi cycle-index.
According to another aspect of the present invention, a kind of gas supply control method is provided, for including using air compensating system
The generating set of diesel engine 100 and generator 200, as shown in figure 3, gas supply control method includes the following steps:
Judge loading area step S1, the operating load of diesel engine 100 is compared with load preset value, to judge to mend
Whether gas system is to 100 tonifying Qi of diesel engine.Herein, it is to be understood that " loading area ", which refers to, judges that diesel engine 100 is loading
Preceding locating operating status, is heavy-duty service or underrun.
Specifically, in judging loading area step S1, when the operating load of diesel engine 100 is default more than or equal to load
When value, i.e. diesel engine 100 are higher load operations, air compensating system is not to 100 tonifying Qi of diesel engine and diesel engine 100 is loaded directly into
To load load (target load illustrated).It should be noted that before carrying out judging loading area step S1, diesel engine
100 with regard to having started to be loaded.After diesel engine 100 is completed to load, program process terminates.
Optionally, the operating status step S0 of detection diesel engine can also be carried out before judging loading area step S1,
In this step, it is acceleration mode or steady state that control unit, which can prompt the operating status of diesel engine,.
Gas supply control method further includes the judgement load load amplitude steps S2 after judging loading area step S1, will
Whether the load load amplitude of diesel engine 100 is compared with load load amplitude preset value, to judge air compensating system to diesel oil
100 tonifying Qi of machine.In judging loading area step S1, when the operating load of diesel engine 100 is less than load preset value, sentenced
Disconnected load load amplitude steps S2.
In judgement load load amplitude steps S2, when loading load amplitude less than load load amplitude preset value, mend
Gas system is not to 100 tonifying Qi of diesel engine and diesel engine 100 is loaded directly into load load (target load illustrated).It needs
Illustrate, before carrying out judging loading area step S1, diesel engine 100 is with regard to having started to be loaded.When diesel engine 100 is complete
After load, program process terminates.
In judgement load load amplitude steps S2, when load load amplitude is more than or equal to load load amplitude preset value
When, air compensating system is to 100 tonifying Qi of diesel engine and diesel engine 100 has been loaded onto load load before tonifying Qi.Specifically, when adding
When loading with lotus amplitude more than or equal to load load amplitude preset value, program enters next step, i.e. tonifying Qi nozzle opens step
S3, control unit 370 control tonifying Qi nozzle and open.
Gas supply control method further includes the tonifying Qi duration rate-determining steps S4 after tonifying Qi nozzle opens step S3, works as tonifying Qi
After nozzle is opened, control unit 370 controls air compensating system according to load load amplitude and recycles to the tonifying Qi of 100 tonifying Qi of diesel engine
Number (duration of tonifying Qi nozzle).In tonifying Qi duration rate-determining steps S4, when tonifying Qi makes diesel engine 100 complete tonifying Qi cycle-index
Tonifying Qi nozzle is closed afterwards.EP (end of program) after tonifying Qi nozzle is closed.
It should be noted that before carrying out judging loading area step S1, diesel engine 100 with regard to having started to be loaded,
Before tonifying Qi duration rate-determining steps S4, diesel engine 100 has been loaded onto load load.
The related content and above description control unit 370 being related in gas supply control method described in present embodiment
In have identical, for brevity, repeat no more.
It is described with reference to Figure 5 an embodiment of gas supply control method.
When the operating load of diesel engine 100 is 60%, diesel engine 100 starts to load, and program enters judgement loading area
Step S1.Due to 60% > load preset value 50% of operating load, no matter load why load is worth, tonifying Qi nozzle attonity is (i.e.
It is not turned on), air compensating system is not to 100 tonifying Qi of diesel engine.
When the operating load of diesel engine 100 is 0%, diesel engine 100 starts to load, and program, which enters, judges that loading area walks
Rapid S1.Due to 0% < load preset value 50% of operating load, program enters judgement load load amplitude steps S2, loads load
It is 5%, load load amplitude is 5%, and load 5% < of load amplitude loads load amplitude preset value 10%, and tonifying Qi nozzle is without dynamic
Make, air compensating system is not to 100 tonifying Qi of diesel engine.
When the operating load of diesel engine 100 is 0%, diesel engine 100 starts to load, and program, which enters, judges loading area step
S1, due to 0% < load preset value 50% of operating load, program enter judgement load load amplitude steps S2, load load
It is 40%, load load amplitude is 40%, and load 40% > of load amplitude loads load amplitude preset value 10%, and tonifying Qi nozzle is dynamic
Make and (enters tonifying Qi nozzle and open step S3).Program enters tonifying Qi duration rate-determining steps S4, and control unit can be based on tonifying Qi
It is 30 that duration interpolation table, which is obtained corresponding to the tonifying Qi cycle-index of load load amplitude 40%,.Air compensating system is mended to diesel engine 100
Gas duration enables to diesel engine 100 to complete 30 circulations.After completing 30 circulations, tonifying Qi nozzle is closed, EP (end of program).
Unless otherwise defined, technical and scientific term used herein and those skilled in the art of the invention
Normally understood meaning is identical.Term used herein is intended merely to describe specifically to implement purpose, it is not intended that limitation is originally
Invention.The terms such as herein presented " portion ", " part " can both indicate single part, can also indicate multiple parts
Combination.The terms such as herein presented " installation ", " setting " can both indicate that a component was attached directly to another portion
Part can also indicate that a component is attached to another component by middleware.It describes in one embodiment herein
Feature can be applied in combination another embodiment individually or with other features, unless this feature is in another implementation
It is not suitable for or is otherwise noted in mode.
The present invention is illustrated by above embodiment, but it is to be understood that, above embodiment is
Purpose for illustrating and illustrating, and be not intended to limit the invention within the scope of described embodiment.Furthermore this field
It is understood that the invention is not limited to above embodiment, introduction according to the present invention can also be made technical staff
More kinds of variants and modifications, all fall within the scope of the claimed invention for these variants and modifications.Guarantor of the invention
Shield range is defined by the appended claims and their equivalents.
Claims (19)
1. a kind of air compensating system, for the generating set including diesel engine and generator, the diesel engine is mentioned to the generator
For driving force, the diesel engine is provided at least two cylinders, and the diesel engine passes through turbocharger to described at least two
Cylinder be sent into air, be provided between the air taking port of the turbocharger and at least two cylinder air inlet main line and with
At least two inlet manifold roads that at least two cylinder is respectively communicated with, which is characterized in that the air compensating system includes:
Tonifying Qi compressor is used for compressed air；And
Tonifying Qi pipeline, the input terminal of the tonifying Qi pipeline are connected to the tonifying Qi compressor, the output end point of the tonifying Qi pipeline
It is not connected to at least two inlet manifold road, so that the air is directly distinguished via at least two inlet manifold road
Into the corresponding cylinder.
2. air compensating system according to claim 1, which is characterized in that the output end of the tonifying Qi pipeline, which is provided with, to be corresponded to
The injection apparatus on each inlet manifold road, the air enter the inlet manifold road via the injection apparatus.
3. air compensating system according to claim 1, which is characterized in that the air compensating system further includes being arranged in the tonifying Qi
The decompressor and gas storage device in compressor downstream, the decompressor are arranged in the tonifying Qi compressor and the gas
Between storage device.
4. air compensating system according to claim 3, which is characterized in that the caliber of the tonifying Qi pipeline is close to the gas
The exit of storage device is from large to small.
5. air compensating system according to claim 3, which is characterized in that the tonifying Qi pipeline is in the gas storage device
Downstream is provided with safety valve.
6. air compensating system according to claim 1, which is characterized in that the air compensating system includes control unit, the control
Unit processed is configured to operating load and/or load load amplitude according to the diesel engine and makes the air compensating system to the bavin
Oil machine tonifying Qi.
7. air compensating system according to claim 6, which is characterized in that described control unit is configured to when the operating load
The air compensating system is controlled when more than or equal to load preset value not to the diesel engine tonifying Qi.
8. air compensating system according to claim 6, which is characterized in that described control unit is configured to when the operating load
Less than load preset value and the load load amplitude is less than when load load amplitude preset value the air compensating system not to described
Diesel engine tonifying Qi.
9. air compensating system according to claim 6, which is characterized in that described control unit is configured to when the operating load
Less than load preset value and the load load amplitude is more than or equal to when load load amplitude preset value the air compensating system to institute
State diesel engine tonifying Qi.
10. air compensating system according to claim 9, which is characterized in that described control unit is configured to according to the load
Load amplitude and control tonifying Qi cycle-index of the air compensating system to the diesel engine tonifying Qi.
11. air compensating system according to claim 6, which is characterized in that described control unit is further configured such that institute
Air compensating system is stated in the air inlet of the diesel engine to the diesel engine tonifying Qi, and the IO Intake Valve Opens of the diesel engine it
The tonifying Qi of the preceding air compensating system starts, and stops in the tonifying Qi of the IC Intake Valve Closes foregoing description air compensating system of the diesel engine.
12. a kind of gas supply control method, for including using air compensating system according to any one of claim 1 to 11
The generating set of diesel engine and generator, the diesel engine provide driving force to the generator, which is characterized in that the tonifying Qi
Control method includes the following steps:
Judge loading area step, the operating load of the diesel engine is compared with load preset value, to judge the benefit
Whether gas system is to the diesel engine tonifying Qi.
13. gas supply control method according to claim 12, which is characterized in that in judging loading area step, work as institute
When stating operating load more than or equal to the load preset value, the air compensating system is not to the diesel engine tonifying Qi.
14. gas supply control method according to claim 12, which is characterized in that further include being walked in the judgement loading area
Judgement after rapid loads load amplitude steps, by the load load amplitude of the diesel engine and load load amplitude preset value into
Whether row compares, to judge the air compensating system to the diesel engine tonifying Qi.
15. gas supply control method according to claim 14, which is characterized in that in judging loading area step, work as institute
When stating operating load less than the load preset value, carries out the judgement and load load amplitude steps.
16. gas supply control method according to claim 15 ,+be characterized in that, in judgement load load amplitude step
In rapid, when the load load amplitude is less than the load load amplitude preset value, the air compensating system is not to the diesel oil
Machine tonifying Qi.
17. gas supply control method according to claim 15, which is characterized in that load load amplitude steps in the judgement
In, when the load load amplitude is more than or equal to the load load amplitude preset value, the air compensating system is to the diesel oil
Machine tonifying Qi.
18. gas supply control method according to claim 14, which is characterized in that controlled according to the load load amplitude
Tonifying Qi cycle-index of the air compensating system to the diesel engine tonifying Qi.
19. gas supply control method according to claim 12, which is characterized in that the unlatching by controlling tonifying Qi nozzle makes
The air compensating system is to the diesel engine tonifying Qi.
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| CN201811518368.1A CN109458253B (en) | 2018-12-12 | 2018-12-12 | Air supply system and air supply control method |
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| CN201811518368.1A CN109458253B (en) | 2018-12-12 | 2018-12-12 | Air supply system and air supply control method |
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| CN111894771A (en) * | 2020-07-22 | 2020-11-06 | 东风商用车有限公司 | Engine air inlet system, engine, vehicle and air inlet method |
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| CN112780403A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Device and method for improving transient characteristics of high-power V-shaped marine diesel engine based on main pipe independent air supply |
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Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |