CN110284976A - A kind of engine control, device, storage medium and computer equipment - Google Patents
A kind of engine control, device, storage medium and computer equipment Download PDFInfo
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- CN110284976A CN110284976A CN201910577988.0A CN201910577988A CN110284976A CN 110284976 A CN110284976 A CN 110284976A CN 201910577988 A CN201910577988 A CN 201910577988A CN 110284976 A CN110284976 A CN 110284976A
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- Prior art keywords
- air throttle
- pressure
- current time
- throttle
- demand
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0223—Variable control of the intake valves only
- F02D13/0226—Variable control of the intake valves only changing valve lift or valve lift and timing
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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
-
- 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
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a kind of engine control, device, storage medium and computer equipments, can determine with the matched desired pressure ratio of the current rotating speed of engine, the desired pressure is than for the ratio between pressure before pressure after the air throttle in the smallest situation of the maximum and restriction loss in throttle opening and air throttle；According to actual pressure after the air throttle at current time and the desired pressure than demand pressure before acquisition air throttle；The target aperture of by-passing valve is determined according to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, and the gas outlet of the by-passing valve is communicated with the atmosphere；It controls the by-passing valve and reaches the target aperture.Present invention employs control by-passing valve aperture technological means, overcome engine restriction loss increase the technical issues of, and then reached improve engine the thermal efficiency technical effect.
Description
Technical field
The present invention relates to technical field of engines more particularly to a kind of engine control, device, storage medium and meters
Calculate machine equipment.
Background technique
Nowadays, engine can be widely used in the machine that can be converted into mechanical energy of other forms as one kind
On the various vehicles and mechanical device, and the air throttle on engine is controlled as one of most important component of engine
Into the content of the gas of engine.
However, engine in actual use, the air before air throttle be not always all require enter hair
Motivation when the gas before air throttle is more excessive than the gas of engine demand, will increase engine throttle behind the door to engine air
Vacuum degree between cylinder combustion chamber increases the restriction loss of engine, causes engine energy consumption excessively high, reduces engine
The thermal efficiency.
Therefore, how by reducing the restriction loss of engine, so that improving the thermal efficiency of engine becomes the relevant technologies
The problem of personnel's urgent need to resolve.
Summary of the invention
In view of the above problems, the present invention provides a kind of one for overcoming the above problem or at least being partially solved the above problem
Kind engine control, device, storage medium and computer equipment, technical solution are as follows:
A kind of engine control, comprising:
The determining matched desired pressure ratio of current rotating speed with engine, the desired pressure ratio be throttle opening most
The ratio between pressure and pressure before air throttle after air throttle in the big and the smallest situation of restriction loss；
According to actual pressure after the air throttle at current time and the desired pressure ratio, demand pressure before air throttle is obtained；
According to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, by-passing valve is determined
Target aperture, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the gas outlet of the by-passing valve
It is communicated with the atmosphere；
It controls the by-passing valve and reaches the target aperture.
Optionally, the method also includes:
Demand volume and the actual pressure at current time ratio after the air throttle at acquisition current time, the actual pressure ratio are
The ratio between actual pressure before actual pressure and the air throttle at current time after the air throttle at current time；
According to demand volume after the air throttle at the current time and the actual pressure at current time ratio, current time is determined
Throttle demand aperture；
It controls the air throttle and reaches the throttle demand aperture.
Optionally, before the air throttle according to current time before actual pressure and the air throttle demand pressure difference
Value, determines the target aperture of by-passing valve, comprising:
The difference of demand pressure before actual pressure before the air throttle at the current time and the air throttle is inputted into ratio-
In integral-derivative controller, the target aperture of the proportional, integral-Derivating controller output by-passing valve is obtained.
Optionally, demand volume after the air throttle for obtaining current time, comprising:
According to engine in the revolving speed and load at current time, demand volume after the air throttle at current time is obtained.
Optionally, the method also includes:
The desired pressure ratio is compared with actual pressure ratio, obtains comparison result, wherein the actual pressure ratio
For the ratio between actual pressure before actual pressure after the air throttle at current time and the air throttle at current time；
The comparison result meet it is default relatively require when, then execute after the air throttle according to current time actually
Pressure and the desired pressure ratio, the step of obtaining demand pressure before air throttle.
A kind of engine control system, comprising: desired pressure than demand pressure obtaining unit before determination unit, air throttle,
Target aperture determination unit and bypass valve control unit, VCU,
The desired pressure is than determination unit, for the determining matched desired pressure ratio of current rotating speed with engine, institute
Desired pressure is stated than before for pressure after the air throttle in the smallest situation of the maximum and restriction loss in throttle opening and air throttle
The ratio between pressure；
Demand pressure obtaining unit before the air throttle, for actual pressure after the air throttle according to current time with it is described
Desired pressure ratio obtains demand pressure before air throttle；
The target aperture determination unit, before actual pressure before the air throttle according to current time and the air throttle
The difference of demand pressure determines the target aperture of by-passing valve, wherein the air inlet of the air inlet of the by-passing valve and the air throttle
Mouth connection, the gas outlet of the by-passing valve is communicated with the atmosphere；
The bypass valve control unit, VCU reaches the target aperture for controlling the by-passing valve.
Optionally, described device further include: actual pressure is than obtaining unit, throttle demand aperture determination unit and solar term
Door control unit,
The actual pressure is than obtaining unit, demand volume and current time after the air throttle for obtaining current time
Actual pressure ratio, the actual pressure are practical than before actual pressure after the air throttle for current time and the air throttle at current time
The ratio between pressure；
The throttle demand aperture determination unit for demand volume after the air throttle according to the current time and is worked as
The actual pressure ratio at preceding moment, determines the throttle demand aperture at current time；
The throttle valve control unit reaches the throttle demand aperture for controlling the air throttle.
Optionally, the target aperture determination unit is specifically used for: by actual pressure before the air throttle at the current time
In difference input proportional, integral-Derivating controller of demand pressure before the air throttle, the proportional, integral-derivative is obtained
The target aperture of the by-passing valve of controller output.
A kind of storage medium is stored with computer executable instructions in the storage medium, and the computer is executable to be referred to
When order is loaded and executed by processor, engine control as described in any one of the above embodiments is realized.
A kind of computer equipment, including processor, memory and be stored on the memory and can be in the processor
The program of upper operation, the processor at least perform the steps of when executing program
The determining matched desired pressure ratio of current rotating speed with engine, the desired pressure ratio be throttle opening most
The ratio between pressure and pressure before air throttle after air throttle in the big and the smallest situation of restriction loss；
According to actual pressure after the air throttle at current time and the desired pressure ratio, demand pressure before air throttle is obtained；
According to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, by-passing valve is determined
Target aperture, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the gas outlet of the by-passing valve
It is communicated with the atmosphere；
It controls the by-passing valve and reaches the target aperture.
By above-mentioned technical proposal, a kind of engine control, device, storage medium and computer provided by the invention
Equipment, can determine with the matched desired pressure ratio of the current rotating speed of engine, the desired pressure ratio be in throttle opening
The ratio between pressure and pressure before air throttle after air throttle in the maximum and the smallest situation of restriction loss；According to the solar term at current time
Actual pressure and the desired pressure are than demand pressure before acquisition air throttle behind the door；According to actually being pressed before the air throttle at current time
The difference of demand pressure determines the target aperture of by-passing valve before power and the air throttle, wherein the air inlet of the by-passing valve with
The air inlet of the air throttle is connected to, and the gas outlet of the by-passing valve is communicated with the atmosphere；It controls the by-passing valve and reaches the mesh
Mark aperture.Present invention employs the technological means of the aperture of control by-passing valve, overcome the skill that the restriction loss of engine increases
Art problem, and then reached the technical effect for improving the thermal efficiency of engine.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows a kind of flow diagram of engine control provided in an embodiment of the present invention；
Fig. 2 shows a kind of location diagrams of by-passing valve and air throttle provided in an embodiment of the present invention；
Fig. 3 shows the flow diagram of another engine control provided in an embodiment of the present invention；
Fig. 4 shows the operation of proportional, integral-Derivating controller provided in an embodiment of the present invention and illustrates to illustrate
Figure；
Fig. 5 shows the flow diagram of another engine control provided in an embodiment of the present invention；
Fig. 6 shows a kind of structural schematic diagram of engine control system provided in an embodiment of the present invention；
Fig. 7 shows the structural schematic diagram of another engine control system provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
As shown in Figure 1, a kind of engine control provided in an embodiment of the present invention, may include:
The matched desired pressure ratio of the current rotating speed of S100, determination and engine, the desired pressure ratio are in air throttle
The ratio between pressure and pressure before air throttle after air throttle under aperture maximum and the smallest situation of restriction loss；
Specifically, engine can be the engine for being equipped with booster.With the matched ideal of current rotating speed of engine
Pressure ratio, which can be, measure in test of many times to engine, is saved under each revolving speed by the engine measured in test
Pressure and pressure before air throttle after air throttle in the case of stream loss reduction can obtain ideal pressure of the engine under each revolving speed
Power ratio.For example, the revolving speed when engine maintains restriction loss minimum for the aperture of 700r/min (rev/min) and air throttle
Throttle opening in the case where, pressure is 1.2bar (bar) after air throttle, and pressure is 3bar (bar) before air throttle, then engine
Revolving speed when being 700r/min (rev/min) matched desired pressure ratio be 0.4.
It is understood that the air throttle of engine is connected by pipeline and the inlet valve of combustion chamber, when inlet valve is opened
When, the piston of engine, which is moved down, sucks combustion chamber for gas after air throttle.However, if the aperture of this subject throttle is smaller, that
It is bigger that generation reaction force is moved down to piston.Reaction force is bigger, then restriction loss is bigger, therefore, for the damage that will throttle
Mistake minimizes, and needs throttle valve aperture maximum.
S200, according to actual pressure after the air throttle at current time and the desired pressure ratio, obtain demand before air throttle
Pressure；
The embodiment of the present invention can detect actual pressure after the air throttle for obtaining current time by pressure sensor.Working as
Demand pressure, which can be, after the air throttle at preceding moment under actual pressure, before air throttle theoretically reaches the required of desired pressure ratio
Pressure.Specifically, before air throttle demand pressure can by actual pressure after the air throttle at current time divided by desired pressure ratio,
Demand pressure before acquisition air throttle.For example, actual pressure is after the air throttle for passing through pressure sensor acquisition current time
1.1bar (bar), when ideal pressure ratio is 0.55, demand pressure is 2bar (bar) before obtaining air throttle.
Optionally, another engine control provided in an embodiment of the present invention, can also be by the desired pressure ratio
It is compared with actual pressure ratio, obtains comparison result, wherein the actual pressure is practical than after the air throttle for current time
The ratio between actual pressure before the air throttle at pressure and current time；The comparison result meet it is default relatively require when, then execute
Step S200.
Specifically, the embodiment of the present invention is actually pressed after can detecting the air throttle for obtaining current time by pressure sensor
Actual pressure before the air throttle at power and current time, actual pressure is divided by actual pressure before the air throttle at current time after air throttle
Value can be actual pressure ratio.For example, actual pressure is 1.1bar (bar), reality before air throttle after the air throttle at current time
Pressure is 2.2bar (bar), then actual pressure ratio is 0.5.
Wherein, above-mentioned desired pressure is than that than the comparison result obtained after being compared can be desired pressure with actual pressure
Than the gap between actual pressure ratio, which can be difference, or ratio etc..Correspondingly, default relatively require
Preset gap can be greater than than the gap between actual pressure ratio for desired pressure.
Desired pressure is than can be desired pressure ratio and actual pressure ratio than the comparison result being compared with actual pressure
Difference, be also possible to absolute value of the desired pressure than the difference with actual pressure ratio.It can be understood that comparison result can be with
It is desired pressure than a variety of numerical relations between actual pressure ratio, does not further limit herein.It is reason in comparison result
When thinking the absolute value of the difference of pressure ratio and actual pressure ratio, the embodiment of the present invention can relatively require to be set as default by default
Threshold value executes step S200 when desired pressure is greater than preset threshold than the absolute value of the difference with actual pressure ratio.For example,
When preset threshold be 0.2 when, desired pressure ratio be 0.1, actual pressure ratio be 0.35, then desired pressure than with actual pressure ratio
The absolute value of difference is 0.25, can execute step S200 at this time.When desired pressure is more absolute than the difference with actual pressure ratio
When value is greater than preset threshold, illustrate that the restriction loss of current time engine is excessive, needs to reduce in time the throttling damage of engine
It loses.
S300, according to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, determine
The target aperture of by-passing valve, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the by-passing valve
Gas outlet is communicated with the atmosphere；
Specifically, the difference of demand pressure is to a certain degree before actual pressure and the air throttle before the air throttle at current time
The deviation for the minimum restriction loss that the restriction loss of the upper engine for indicating current time and current time engine can achieve
Size, therefore the embodiment of the present invention can determine the target aperture of by-passing valve according to the deviation size, such as deviation is bigger, determine
Bypass valve opening can be bigger.Under normal circumstances, the restriction loss of the engine at current time is not to start at current time
The minimum restriction loss that machine can achieve be because are as follows: actual pressure is excessive before air throttle.It therefore, can be by adjusting by-passing valve
Aperture reduces actual pressure before air throttle, and then reduces the restriction loss of engine.
It is related with the opening size of by-passing valve to reduce degree for actual pressure before air throttle.It, can be with one when by-passing valve is opened
Determine in degree reduce current time air throttle before actual pressure.For example, if actual pressure is before air throttle when by-passing valve is closed
3.5bar (bar), then when bypassing valve opening is 15 degree, actual pressure be can reduce to 2.8bar (bar) before air throttle, work as bypass
When valve opening is 30 degree, actual pressure be can reduce to 2.1bar (bar) before air throttle.It, can be with by adjusting the aperture of by-passing valve
Effectively actual pressure before air throttle is adjusted, so that the restriction loss of engine is minimum.
The positional relationship of by-passing valve and air throttle can be as shown in Figure 2: according to airintake direction can determine air throttle into
The air inlet of port and by-passing valve, the air inlet of by-passing valve are connected to the air inlet of the air throttle, and the gas outlet of by-passing valve is again
It is communicated with the atmosphere, the gas outlet of by-passing valve is communicated with the atmosphere, convenient for the excessive gas before release air throttle.
In order to be accurately adjusted to actual pressure before air throttle, so that the restriction loss of engine can achieve or approach
Minimum value determines that the process of the target aperture of by-passing valve can be as shown in figure 3, another kind engine provided in an embodiment of the present invention
Control method, step S300 can be specifically included:
S310, the difference of demand pressure before actual pressure before the air throttle at the current time and the air throttle is inputted
In proportional, integral-Derivating controller, the target aperture of the proportional, integral-Derivating controller output by-passing valve is obtained.
Specifically, the embodiment of the present invention determines that the mode of the target aperture of by-passing valve can be the air throttle at current time
Before preceding actual pressure and air throttle in difference input proportional, integral-Derivating controller of demand pressure, by proportional, integral-derivative
Controller is calculated according to the linear combination that the difference carries out ratio, integral and differential, finally by proportional, integral-Derivating controller
Export the target aperture of by-passing valve.Proportional, integral-Derivating controller operation in order to facilitate understanding, as shown in figure 4, than
The control action of example is can proportionally to reflect control deviation signal e (t), and deviation once generates, proportional, integral-derivative control
Device processed generates control action immediately and reduces deviation, and the power of control action depends on Proportional coefficient K p.The control action of integral is
Eliminate static difference, improve control without margin, the power of the control action of integral depends on integration time constant Ti, and Ti is bigger, product
Divide control action weaker.The control action of differential is mainly to reflect the variation tendency of deviation signal, and can become in deviation signal
Before too big, an effective early stage revise signal is introduced, thus accelerate response speed, reduction overshoot.Because of ratio-product
Point-Derivating controller can track the different working condition of controlled device using combining for 3 kinds of different control actions, to make
Determine that the target aperture of by-passing valve is more accurate.
S400, the control by-passing valve reach the target aperture.
It should be noted that the current rotating speed due to engine can be dynamic change, so matching with current rotating speed
Desired pressure than being also possible to change with the dynamic change of the current rotating speed of engine, so as to cause current time
Actual pressure and the difference of demand pressure before air throttle can be a dynamic value before air throttle, it is thus determined that the target of by-passing valve
Aperture can be dynamic change.The embodiment of the present invention can be according to the target aperture of the by-passing valve of dynamic change, and dynamic controls
By-passing valve reaches the target aperture in time.In order to make it easy to understand, be illustrated herein: driver is with revolving speed 2050r/min
Vehicle driving where (rev/min) drives the engine is on road, and the aperture of by-passing valve is 15 degree at this time, if driver has found
Engine speed is down to 850r/min (rev/min), if the target of the by-passing valve obtained at this time is opened by the road ahead congestion
Degree is 5 degree, then the aperture that can control by-passing valve is 5 degree, and when road jam situation is alleviated, driver again mentions the revolving speed of engine
Up to 1200r/min (rev/min), then the aperture for controlling by-passing valve at this time can be 10 degree.
A kind of engine control provided in an embodiment of the present invention can determine matched with the current rotating speed of engine
Desired pressure ratio, the desired pressure after the air throttle in the smallest situation of the maximum and restriction loss in throttle opening than to press
The ratio between pressure before power and air throttle；According to actual pressure after the air throttle at current time and the desired pressure than obtaining air throttle
Preceding demand pressure；It is determined and is bypassed according to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle
The target aperture of valve, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the outlet of the by-passing valve
Mouth is communicated with the atmosphere；It controls the by-passing valve and reaches the target aperture.The embodiment of the present invention uses opening for control by-passing valve
The technological means of degree, overcome engine restriction loss increase the technical issues of, and then reached improve engine thermal effect
The technical effect of rate.
Optionally, it is based on method shown in FIG. 1, as shown in Figure 5.Another kind engine control provided in an embodiment of the present invention
Method can also include:
Demand volume and the actual pressure at current time ratio after S500, the air throttle at acquisition current time, the practical pressure
Power is than the ratio between actual pressure before actual pressure after the air throttle for current time and the air throttle at current time；
Optionally, the embodiment of the present invention can revolving speed and load according to engine at current time, obtain current time
Air throttle after demand volume.
Wherein, the resistance that the load at the current time of engine is subject to the vehicle where current time engine when advancing
Power is related, for example, the weight bearing of the vehicle, the smoothness on road surface and fuel used quality can have an impact load.It is logical
In normal situation, the embodiment of the present invention can enter the air inflow and the theory at current time of the cylinder of engine based on current time
The air inflow of cylinder full of engine obtains the load at the current time of engine.For example, current time engine will be entered
The ratio of air inflow of the cylinder of air inflow and the theory at current time full of engine of cylinder be determined as the engine
The load at current time.
Engine factory before can to after the air throttle under various operating conditions demand volume determine, specifically
, the relationship of gas pedal aperture and load can be measured, since load is again related with revolving speed, and identical gas pedal aperture
It can achieve different revolving speeds under different operating conditions, such as under different gears, identical gas pedal aperture can achieve not
Same revolving speed.It, can be according to the different rotating speeds of measurement and need after air throttle corresponding in the case of different load in test measurement
Flow is sought, and generates flow of requirement scale after air throttle.In engine actual use, can according to the revolving speed at current time and
Load obtains demand volume after the air throttle at current time after air throttle in flow of requirement scale.
Specifically, due to reaching in control by-passing valve according to the matched desired pressure ratio of current rotating speed of engine and current
After the target aperture that actual pressure determines after the air throttle at moment, actual pressure can change before air throttle, and practical after air throttle
Pressure does not change, and then causes actual pressure than variation, and after actual pressure is than changing, the embodiment of the present invention is needed to solar term
The aperture of door is reset, to make engine reach minimum restriction loss.For example, being in the aperture of previous moment in air throttle
At 15 degree, actual pressure is after actual pressure is 3bar (bar) and the air throttle of previous moment before the air throttle of previous moment
1.5bar (bar), the actual pressure ratio of previous moment is 0.5, after adjusting the aperture of by-passing valve, the air throttle at current time
Preceding actual pressure is 2bar (bar), and actual pressure is still 1.5bar (bar) after the air throttle at current time, then current time
Actual pressure ratio be 0.75 because the actual pressure at current time becomes than the actual pressure ratio relative to previous moment
Change, so redefining the aperture of air throttle.
S600, according to demand volume after the air throttle at the current time and the actual pressure at current time ratio, determination is worked as
The throttle demand aperture at preceding moment；
Specifically, the embodiment of the present invention can be according to the reality at demand volume and current time after the air throttle at current time
Pressure ratio inquires demand volume and current time after the air throttle with current time in preset throttle opening database
Actual pressure ratio current time throttle demand aperture.It is understood that before engine factory, the engine
Throttle opening test by minimum restriction loss under various conditions, according to demand volume after each air throttle and practical pressure
Power ratio can determine each throttle opening under minimum restriction loss, and be stored in preset throttle opening database.
In general, in preset throttle opening database after air throttle demand volume and actual pressure than collective effect in air throttle
Demand aperture.Specifically, according to charge flow rate characteristic, in the case where other conditions are constant, when the aperture of air throttle increases,
The flow for flowing through air throttle also increases；In the case where other conditions are constant, when actual pressure than it is smaller when, flow through air throttle
Flow is bigger.After engine factory, can after the air throttle for obtaining current time demand volume and current time
After actual pressure ratio, the throttle demand aperture at current time is determined from preset throttle opening database.
S700, the control air throttle reach the throttle demand aperture.
It should be noted that step S500 to 700 shown in Fig. 5 is only one of executive condition of the present invention, due to solar term
Demand volume and actual pressure ratio can be with dynamic changes behind the door, therefore step S500 to S700 can be executed at any time.
It is adjusted it is understood that any engine control provided in an embodiment of the present invention can be a dynamic
The process of the aperture of the aperture and air throttle of the by-passing valve of engine.The embodiment of the present invention can be by adjusting the bypass of engine
The aperture of valve and/or the aperture of air throttle make the restriction loss dynamic of engine maintain minimum restriction loss state.
Corresponding to the above method embodiment, the embodiment of the invention also provides a kind of engine control systems.
As shown in fig. 6, a kind of engine control system provided in an embodiment of the present invention, may include: desired pressure than true
Demand pressure obtaining unit 200, target aperture determination unit 300 and bypass valve control unit, VCU 400 before order member 100, air throttle,
The desired pressure is than determination unit 100, for determining the matched desired pressure ratio of current rotating speed with engine,
The desired pressure is than for pressure and air throttle after the air throttle in the smallest situation of the maximum and restriction loss in throttle opening
The ratio between preceding pressure；
Specifically, engine can be the engine for being equipped with booster.With the matched ideal of current rotating speed of engine
Pressure ratio, which can be, measure in test of many times to engine, is saved under each revolving speed by the engine measured in test
Pressure and pressure before air throttle after air throttle in the case of stream loss reduction can obtain ideal pressure of the engine under each revolving speed
Power ratio.For example, the revolving speed when engine maintains restriction loss minimum for the aperture of 700r/min (rev/min) and air throttle
Throttle opening in the case where, pressure is 1.2bar (bar) after air throttle, and pressure is 3bar (bar) before air throttle, then engine
Revolving speed when being 700r/min (rev/min) matched desired pressure ratio be 0.4.
It is understood that the air throttle of engine is connected by pipeline and the inlet valve of combustion chamber, when inlet valve is opened
When, the piston of engine, which is moved down, sucks combustion chamber for gas after air throttle.However, if the aperture of this subject throttle is smaller, that
It is bigger that generation reaction force is moved down to piston.Reaction force is bigger, then restriction loss is bigger, therefore, for the damage that will throttle
Mistake minimizes, and needs throttle valve aperture maximum.
Demand pressure obtaining unit 200 before the air throttle, for actual pressure after the air throttle according to current time with
The desired pressure ratio obtains demand pressure before air throttle；
The embodiment of the present invention can detect actual pressure after the air throttle for obtaining current time by pressure sensor.Working as
Demand pressure, which can be, after the air throttle at preceding moment under actual pressure, before air throttle theoretically reaches the required of desired pressure ratio
Pressure.Specifically, before air throttle demand pressure can by actual pressure after the air throttle at current time divided by desired pressure ratio,
Demand pressure before acquisition air throttle.For example, actual pressure is after the air throttle for passing through pressure sensor acquisition current time
1.1bar (bar), when ideal pressure ratio is 0.55, demand pressure is 2bar (bar) before obtaining air throttle.
Optionally, another engine control system provided in an embodiment of the present invention can also include: that comparison result obtains
Unit,
The comparison result obtaining unit obtains ratio for the desired pressure ratio to be compared with actual pressure ratio
Relatively result, wherein the actual pressure is more real than before actual pressure after the air throttle for current time and the air throttle at current time
The ratio between border pressure；The comparison result meet it is default relatively require when, then demand pressure obtains singly before triggering the air throttle
Member 200 obtains demand before air throttle for actual pressure after the air throttle according to current time and the desired pressure ratio
Pressure.
Specifically, the embodiment of the present invention is actually pressed after can detecting the air throttle for obtaining current time by pressure sensor
Actual pressure before the air throttle at power and current time, actual pressure is divided by actual pressure before the air throttle at current time after air throttle
Value can be actual pressure ratio.For example, actual pressure is 1.1bar (bar), reality before air throttle after the air throttle at current time
Pressure is 2.2bar (bar), then actual pressure ratio is 0.5.
Wherein, above-mentioned desired pressure is than that than the comparison result obtained after being compared can be desired pressure with actual pressure
Than the gap between actual pressure ratio, which can be difference, or ratio etc..Correspondingly, default relatively require
Preset gap can be greater than than the gap between actual pressure ratio for desired pressure.
Desired pressure is than can be desired pressure ratio and actual pressure ratio than the comparison result being compared with actual pressure
Difference, be also possible to absolute value of the desired pressure than the difference with actual pressure ratio.It can be understood that comparison result can be with
It is desired pressure than a variety of numerical relations between actual pressure ratio, does not further limit herein.It is reason in comparison result
When thinking the absolute value of the difference of pressure ratio and actual pressure ratio, the embodiment of the present invention can relatively require to be set as default by default
Threshold value, when desired pressure is greater than preset threshold than the absolute value of the difference with actual pressure ratio, then before triggering the air throttle
Demand pressure obtaining unit 200 is used for actual pressure and the desired pressure ratio after the air throttle according to current time, obtains
Demand pressure before air throttle.For example, desired pressure ratio is 0.1 when preset threshold is 0.2, actual pressure ratio is 0.35, then
Desired pressure is 0.25 than the absolute value of the difference with actual pressure ratio, and demand pressure obtains before can triggering the air throttle at this time
Unit 200 is obtained for actual pressure after the air throttle according to current time and the desired pressure ratio, before obtaining air throttle
Demand pressure.When desired pressure is greater than preset threshold than the absolute value of the difference with actual pressure ratio, illustrate that current time is sent out
The restriction loss of motivation is excessive, needs to reduce in time the restriction loss of engine.
The target aperture determination unit 300, for actual pressure before the air throttle according to current time and the solar term
The difference of demand pressure in front of the door determines the target aperture of by-passing valve, wherein the air inlet of the by-passing valve and the air throttle
Air inlet connection, the gas outlet of the by-passing valve is communicated with the atmosphere；
Specifically, the difference of demand pressure is to a certain degree before actual pressure and the air throttle before the air throttle at current time
The deviation for the minimum restriction loss that the restriction loss of the upper engine for indicating current time and current time engine can achieve
Size, therefore the embodiment of the present invention can determine the target aperture of by-passing valve according to the deviation size, such as deviation is bigger, determine
Bypass valve opening can be bigger.Under normal circumstances, the restriction loss of the engine at current time is not to start at current time
The minimum restriction loss that machine can achieve be because are as follows: actual pressure is excessive before air throttle.It therefore, can be by adjusting by-passing valve
Aperture reduces actual pressure before air throttle, and then reduces the restriction loss of engine.
It is related with the opening size of by-passing valve to reduce degree for actual pressure before air throttle.It, can be with one when by-passing valve is opened
Determine in degree reduce current time air throttle before actual pressure.For example, if actual pressure is before air throttle when by-passing valve is closed
3.5bar (bar), then when bypassing valve opening is 15 degree, actual pressure be can reduce to 2.8bar (bar) before air throttle, work as bypass
When valve opening is 30 degree, actual pressure be can reduce to 2.1bar (bar) before air throttle.It, can be with by adjusting the aperture of by-passing valve
Effectively actual pressure before air throttle is adjusted, so that the restriction loss of engine is minimum.
The positional relationship of by-passing valve and air throttle can be as shown in Figure 2: according to airintake direction can determine air throttle into
The air inlet of port and by-passing valve, the air inlet of by-passing valve are connected to the air inlet of the air throttle, and the gas outlet of by-passing valve is again
It is communicated with the atmosphere, the gas outlet of by-passing valve is communicated with the atmosphere, convenient for the excessive gas before release air throttle.
Optionally, in order to be accurately adjusted to actual pressure before air throttle, so that the restriction loss of engine can reach
It arrives or close to minimum value, another kind engine control system provided in an embodiment of the present invention, the target aperture determination unit 300
It can be specifically used for: the difference of demand pressure before actual pressure before the air throttle at the current time and the air throttle is inputted
In proportional, integral-Derivating controller, the target aperture of the proportional, integral-Derivating controller output by-passing valve is obtained.
Specifically, the embodiment of the present invention determines that the mode of the target aperture of by-passing valve can be the air throttle at current time
Before preceding actual pressure and air throttle in difference input proportional, integral-Derivating controller of demand pressure, by proportional, integral-derivative
Controller is calculated according to the linear combination that the difference carries out ratio, integral and differential, finally by proportional, integral-Derivating controller
Export the target aperture of by-passing valve.Proportional, integral-Derivating controller operation in order to facilitate understanding, as shown in figure 4, than
The control action of example is can proportionally to reflect control deviation signal e (t), and deviation once generates, proportional, integral-derivative control
Device processed generates control action immediately and reduces deviation, and the power of control action depends on Proportional coefficient K p.The control action of integral is
Eliminate static difference, improve control without margin, the power of the control action of integral depends on integration time constant Ti, and Ti is bigger, product
Divide control action weaker.The control action of differential is mainly to reflect the variation tendency of deviation signal, and can become in deviation signal
Before too big, an effective early stage revise signal is introduced, thus accelerate response speed, reduction overshoot.Because of ratio-product
Point-Derivating controller can track the different working condition of controlled device using combining for 3 kinds of different control actions, to make
Determine that the target aperture of by-passing valve is more accurate.
The bypass valve control unit, VCU 400 reaches the target aperture for controlling the by-passing valve.
It should be noted that the current rotating speed due to engine can be dynamic change, so matching with current rotating speed
Desired pressure than being also possible to change with the dynamic change of the current rotating speed of engine, so as to cause current time
Actual pressure and the difference of demand pressure before air throttle can be a dynamic value before air throttle, it is thus determined that the target of by-passing valve
Aperture can be dynamic change.The embodiment of the present invention can be according to the target aperture of the by-passing valve of dynamic change, and dynamic controls
By-passing valve reaches the target aperture in time.In order to make it easy to understand, be illustrated herein: driver is with revolving speed 2050r/min
Vehicle driving where (rev/min) drives the engine is on road, and the aperture of by-passing valve is 15 degree at this time, if driver has found
Engine speed is down to 850r/min (rev/min), if the target of the by-passing valve obtained at this time is opened by the road ahead congestion
Degree is 5 degree, then the aperture that can control by-passing valve is 5 degree, and when road jam situation is alleviated, driver again mentions the revolving speed of engine
Up to 1200r/min (rev/min), then the aperture for controlling by-passing valve at this time can be 10 degree.
A kind of engine control system provided in an embodiment of the present invention can determine matched with the current rotating speed of engine
Desired pressure ratio, the desired pressure after the air throttle in the smallest situation of the maximum and restriction loss in throttle opening than to press
The ratio between pressure before power and air throttle；According to actual pressure after the air throttle at current time and the desired pressure than obtaining air throttle
Preceding demand pressure；It is determined and is bypassed according to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle
The target aperture of valve, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the outlet of the by-passing valve
Mouth is communicated with the atmosphere；It controls the by-passing valve and reaches the target aperture.The embodiment of the present invention uses opening for control by-passing valve
The technological means of degree, overcome engine restriction loss increase the technical issues of, and then reached improve engine thermal effect
The technical effect of rate.
Optionally, as shown in fig. 7, another kind engine control system provided in an embodiment of the present invention, can also include: reality
Border pressure ratio obtaining unit 500, throttle demand aperture determination unit 600 and throttle valve control unit 700,
The actual pressure than obtaining unit 500, after the air throttle for obtaining current time demand volume and it is current when
The actual pressure ratio at quarter, before the actual pressure is than actual pressure after the air throttle for current time and the air throttle at current time
The ratio between actual pressure；
Optionally, another engine control system provided in an embodiment of the present invention, the actual pressure compare obtaining unit
500, it can be used for the revolving speed and load according to engine at current time, obtain demand volume after the air throttle at current time.
Wherein, the resistance that the load at the current time of engine is subject to the vehicle where current time engine when advancing
Power is related, for example, the weight bearing of the vehicle, the smoothness on road surface and fuel used quality can have an impact load.It is logical
In normal situation, the embodiment of the present invention can enter the air inflow and the theory at current time of the cylinder of engine based on current time
The air inflow of cylinder full of engine obtains the load at the current time of engine.For example, current time engine will be entered
The ratio of air inflow of the cylinder of air inflow and the theory at current time full of engine of cylinder be determined as the engine
The load at current time.
Engine factory before can to after the air throttle under various operating conditions demand volume determine, specifically
, the relationship of gas pedal aperture and load can be measured, since load is again related with revolving speed, and identical gas pedal aperture
It can achieve different revolving speeds under different operating conditions, such as under different gears, identical gas pedal aperture can achieve not
Same revolving speed.It, can be according to the different rotating speeds of measurement and need after air throttle corresponding in the case of different load in test measurement
Flow is sought, and generates flow of requirement scale after air throttle.In engine actual use, can according to the revolving speed at current time and
Load obtains demand volume after the air throttle at current time after air throttle in flow of requirement scale.
Specifically, due to reaching in control by-passing valve according to the matched desired pressure ratio of current rotating speed of engine and current
After the target aperture that actual pressure determines after the air throttle at moment, actual pressure can change before air throttle, and practical after air throttle
Pressure does not change, and then causes actual pressure than variation, and after actual pressure is than changing, the embodiment of the present invention is needed to solar term
The aperture of door is reset, to make engine reach minimum restriction loss.For example, being in the aperture of previous moment in air throttle
At 15 degree, actual pressure is after actual pressure is 3bar (bar) and the air throttle of previous moment before the air throttle of previous moment
1.5bar (bar), the actual pressure ratio of previous moment is 0.5, after adjusting the aperture of by-passing valve, the air throttle at current time
Preceding actual pressure is 2bar (bar), and actual pressure is still 1.5bar (bar) after the air throttle at current time, then current time
Actual pressure ratio be 0.75 because the actual pressure at current time becomes than the actual pressure ratio relative to previous moment
Change, so redefining the aperture of air throttle.
The throttle demand aperture determination unit 600, for demand volume after the air throttle according to the current time
And the actual pressure ratio at current time, determine the throttle demand aperture at current time；
Specifically, the embodiment of the present invention can be according to the reality at demand volume and current time after the air throttle at current time
Pressure ratio inquires demand volume and current time after the air throttle with current time in preset throttle opening database
Actual pressure ratio current time throttle demand aperture.It is understood that before engine factory, the engine
Throttle opening test by minimum restriction loss under various conditions, according to demand volume after each air throttle and practical pressure
Power ratio can determine each throttle opening under minimum restriction loss, and be stored in preset throttle opening database.
In general, in preset throttle opening database after air throttle demand volume and actual pressure than collective effect in air throttle
Demand aperture.Specifically, according to charge flow rate characteristic, in the case where other conditions are constant, when the aperture of air throttle increases,
The flow for flowing through air throttle also increases；In the case where other conditions are constant, when actual pressure than it is smaller when, flow through air throttle
Flow is bigger.After engine factory, can after the air throttle for obtaining current time demand volume and current time
After actual pressure ratio, the throttle demand aperture at current time is determined from preset throttle opening database.
The throttle valve control unit 700 reaches the throttle demand aperture for controlling the air throttle.
It is adjusted it is understood that any engine control provided in an embodiment of the present invention can be a dynamic
The process of the aperture of the aperture and air throttle of the by-passing valve of engine.The embodiment of the present invention can be by adjusting the bypass of engine
The aperture of valve and/or the aperture of air throttle make the restriction loss dynamic of engine maintain minimum restriction loss state.
A kind of storage medium provided in an embodiment of the present invention is stored with computer executable instructions in the storage medium,
When the computer executable instructions are loaded and executed by processor, engine controlling party as described in any one of the above embodiments is realized
Method.
A kind of computer equipment provided in an embodiment of the present invention, including processor, memory and it is stored in the memory
Program that is upper and can running on the processor, the processor at least perform the steps of when executing program
The determining matched desired pressure ratio of current rotating speed with engine, the desired pressure ratio be throttle opening most
The ratio between pressure and pressure before air throttle after air throttle in the big and the smallest situation of restriction loss；
According to actual pressure after the air throttle at current time and the desired pressure ratio, demand pressure before air throttle is obtained；
According to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, by-passing valve is determined
Target aperture, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the gas outlet of the by-passing valve
It is communicated with the atmosphere；
It controls the by-passing valve and reaches the target aperture.
The engine control system includes processor and memory, and above-mentioned desired pressure is than determination unit 100, air throttle
Preceding demand pressure obtaining unit 200, target aperture determination unit 300 and bypass valve control unit, VCU 400 etc. are used as program unit
Storage in memory, executes above procedure unit stored in memory by processor to realize corresponding function.
Include kernel in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can be set one
Or more, the aperture of by-passing valve is controlled by adjusting kernel parameter, improves the thermal efficiency of engine.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flashRAM), memory includes at least one storage
Chip.
The embodiment of the invention provides a kind of storage mediums, are stored thereon with program, real when which is executed by processor
The existing engine control.
The embodiment of the invention provides a kind of processor, the processor is for running program, wherein described program operation
Engine control described in Shi Zhihang.
The embodiment of the invention provides a kind of equipment, equipment include processor, memory and storage on a memory and can
The program run on a processor, processor perform the steps of when executing program
The determining matched desired pressure ratio of current rotating speed with engine, the desired pressure ratio be throttle opening most
The ratio between pressure and pressure before air throttle after air throttle in the big and the smallest situation of restriction loss；
According to actual pressure after the air throttle at current time and the desired pressure ratio, demand pressure before air throttle is obtained；
According to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, by-passing valve is determined
Target aperture, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the gas outlet of the by-passing valve
It is communicated with the atmosphere；
It controls the by-passing valve and reaches the target aperture.
Optionally, further includes:
Demand volume and the actual pressure at current time ratio after the air throttle at acquisition current time, the actual pressure ratio are
The ratio between actual pressure before actual pressure and the air throttle at current time after the air throttle at current time；
According to demand volume after the air throttle at the current time and the actual pressure at current time ratio, current time is determined
Throttle demand aperture；
It controls the air throttle and reaches the throttle demand aperture.
Optionally, before the air throttle according to current time before actual pressure and the air throttle demand pressure difference
Value, determines the target aperture of by-passing valve, comprising:
The difference of demand pressure before actual pressure before the air throttle at the current time and the air throttle is inputted into ratio-
In integral-derivative controller, the target aperture of the proportional, integral-Derivating controller output by-passing valve is obtained.
Optionally, demand volume after the air throttle for obtaining current time, comprising:
According to engine in the revolving speed and load at current time, demand volume after the air throttle at current time is obtained.
Optionally, further includes:
The desired pressure ratio is compared with actual pressure ratio, obtains comparison result, wherein the actual pressure ratio
For the ratio between actual pressure before actual pressure after the air throttle at current time and the air throttle at current time；
The comparison result meet it is default relatively require when, then execute after the air throttle according to current time actually
Pressure and the desired pressure ratio, the step of obtaining demand pressure before air throttle.
Equipment herein can be server, PC, PAD, mobile phone etc..
Present invention also provides a kind of computer program products, when executing on data processing equipment, are adapted for carrying out just
The program of beginningization there are as below methods step:
The determining matched desired pressure ratio of current rotating speed with engine, the desired pressure ratio be throttle opening most
The ratio between pressure and pressure before air throttle after air throttle in the big and the smallest situation of restriction loss；
According to actual pressure after the air throttle at current time and the desired pressure ratio, demand pressure before air throttle is obtained；
According to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, by-passing valve is determined
Target aperture, wherein the air inlet of the by-passing valve is connected to the air inlet of the air throttle, the gas outlet of the by-passing valve
It is communicated with the atmosphere；
It controls the by-passing valve and reaches the target aperture.
Optionally, further includes:
Demand volume and the actual pressure at current time ratio after the air throttle at acquisition current time, the actual pressure ratio are
The ratio between actual pressure before actual pressure and the air throttle at current time after the air throttle at current time；
According to demand volume after the air throttle at the current time and the actual pressure at current time ratio, current time is determined
Throttle demand aperture；
It controls the air throttle and reaches the throttle demand aperture.
Optionally, before the air throttle according to current time before actual pressure and the air throttle demand pressure difference
Value, determines the target aperture of by-passing valve, comprising:
The difference of demand pressure before actual pressure before the air throttle at the current time and the air throttle is inputted into ratio-
In integral-derivative controller, the target aperture of the proportional, integral-Derivating controller output by-passing valve is obtained.
Optionally, demand volume after the air throttle for obtaining current time, comprising:
According to engine in the revolving speed and load at current time, demand volume after the air throttle at current time is obtained.
Optionally, further includes:
The desired pressure ratio is compared with actual pressure ratio, obtains comparison result, wherein the actual pressure ratio
For the ratio between actual pressure before actual pressure after the air throttle at current time and the air throttle at current time；
The comparison result meet it is default relatively require when, then execute after the air throttle according to current time actually
Pressure and the desired pressure ratio, the step of obtaining demand pressure before air throttle.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flashRAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
There is also other identical elements in process, method, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (10)
1. a kind of engine control characterized by comprising
The determining matched desired pressure ratio of current rotating speed with engine, the desired pressure ratio be it is maximum in throttle opening and
The ratio between pressure and pressure before air throttle after air throttle in the smallest situation of restriction loss；
According to actual pressure after the air throttle at current time and the desired pressure ratio, demand pressure before air throttle is obtained；
According to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, the mesh of by-passing valve is determined
Mark aperture, wherein the air inlet of the by-passing valve be connected to the air inlet of the air throttle, the gas outlet of the by-passing valve with greatly
Gas connection；
It controls the by-passing valve and reaches the target aperture.
2. the method according to claim 1, wherein further include:
Demand volume and the actual pressure at current time ratio after the air throttle at acquisition current time, the actual pressure ratio are current
The ratio between actual pressure before actual pressure and the air throttle at current time after the air throttle at moment；
According to demand volume after the air throttle at the current time and the actual pressure at current time ratio, the section at current time is determined
Valve demand aperture；
It controls the air throttle and reaches the throttle demand aperture.
3. method according to claim 1 or 2, which is characterized in that actually pressed before the air throttle according to current time
The difference of demand pressure, determines the target aperture of by-passing valve before power and the air throttle, comprising:
The difference of demand pressure before actual pressure before the air throttle at the current time and the air throttle is inputted into ratio-product
Point-Derivating controller in, obtain the target aperture of the by-passing valve of the proportional, integral-Derivating controller output.
4. according to the method described in claim 2, it is characterized in that, it is described obtain current time air throttle after demand volume,
Include:
According to engine in the revolving speed and load at current time, demand volume after the air throttle at current time is obtained.
5. method according to claim 1 or 2, which is characterized in that further include:
The desired pressure ratio is compared with actual pressure ratio, obtains comparison result, wherein the actual pressure ratio is to work as
The ratio between actual pressure before actual pressure and the air throttle at current time after the air throttle at preceding moment；
The comparison result meet it is default relatively require when, then execute actual pressure after the air throttle according to current time
With the desired pressure ratio, obtain air throttle before demand pressure the step of.
6. a kind of engine control system characterized by comprising desired pressure is than demand pressure before determination unit, air throttle
Obtaining unit, target aperture determination unit and bypass valve control unit, VCU,
The desired pressure is than determination unit, for the determining matched desired pressure ratio of current rotating speed with engine, the reason
Think that pressure ratio is pressure and pressure before air throttle after the air throttle under throttle opening maximum and the smallest situation of restriction loss
The ratio between；
Demand pressure obtaining unit before the air throttle, for actual pressure after the air throttle according to current time and the ideal
Pressure ratio obtains demand pressure before air throttle；
The target aperture determination unit, for demand before actual pressure before the air throttle according to current time and the air throttle
The difference of pressure determines the target aperture of by-passing valve, wherein the air inlet of the air inlet of the by-passing valve and the air throttle connects
Logical, the gas outlet of the by-passing valve is communicated with the atmosphere；
The bypass valve control unit, VCU reaches the target aperture for controlling the by-passing valve.
7. device according to claim 6, which is characterized in that further include: actual pressure is than obtaining unit, throttle demand
Aperture determination unit and throttle valve control unit,
The actual pressure is than obtaining unit, the reality at demand volume and current time after the air throttle for obtaining current time
Pressure ratio, the actual pressure is than actual pressure before actual pressure after the air throttle for current time and the air throttle at current time
The ratio between；
The throttle demand aperture determination unit, for demand volume after the air throttle according to the current time and it is current when
The actual pressure ratio at quarter, determines the throttle demand aperture at current time；
The throttle valve control unit reaches the throttle demand aperture for controlling the air throttle.
8. device according to claim 6 or 7, which is characterized in that the target aperture determination unit is specifically used for: by institute
State difference input proportional, integral-derivative control of demand pressure before actual pressure and the air throttle before the air throttle at current time
In device processed, the target aperture of the proportional, integral-Derivating controller output by-passing valve is obtained.
9. a kind of storage medium, which is characterized in that be stored with computer executable instructions, the computer in the storage medium
When executable instruction is loaded and executed by processor, as above engine controlling party described in any one of claim 1 to 5 is realized
Method.
10. a kind of computer equipment, which is characterized in that including processor, memory and be stored on the memory and can be
The program run on the processor, the processor at least perform the steps of when executing program
The determining matched desired pressure ratio of current rotating speed with engine, the desired pressure ratio be it is maximum in throttle opening and
The ratio between pressure and pressure before air throttle after air throttle in the smallest situation of restriction loss；
According to actual pressure after the air throttle at current time and the desired pressure ratio, demand pressure before air throttle is obtained；
According to the difference of demand pressure before actual pressure before the air throttle at current time and the air throttle, the mesh of by-passing valve is determined
Mark aperture, wherein the air inlet of the by-passing valve be connected to the air inlet of the air throttle, the gas outlet of the by-passing valve with greatly
Gas connection；
It controls the by-passing valve and reaches the target aperture.
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| CN201910577988.0A CN110284976B (en) | 2019-06-28 | 2019-06-28 | Engine control method and device, storage medium and computer equipment |
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| CN201910577988.0A CN110284976B (en) | 2019-06-28 | 2019-06-28 | Engine control method and device, storage medium and computer equipment |
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| CN110925106A (en) * | 2019-12-11 | 2020-03-27 | 潍柴动力股份有限公司 | Control method and device of throttle valve of engine, electronic equipment and engine |
| 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 |
| CN111521349A (en) * | 2020-04-21 | 2020-08-11 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
| CN112096513A (en) * | 2020-09-02 | 2020-12-18 | 中国第一汽车股份有限公司 | Electric waste gas bypass valve control method and device, vehicle and storage medium |
| CN114370344A (en) * | 2022-01-19 | 2022-04-19 | 潍柴动力股份有限公司 | Engine air intake control method |
| CN115370489A (en) * | 2022-08-31 | 2022-11-22 | 广西玉柴船电动力有限公司 | Air intake control method capable of improving engine efficiency |
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| CN111521349B (en) * | 2020-04-21 | 2022-07-01 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
| CN112096513A (en) * | 2020-09-02 | 2020-12-18 | 中国第一汽车股份有限公司 | Electric waste gas bypass valve control method and device, vehicle and storage medium |
| CN112096513B (en) * | 2020-09-02 | 2021-08-31 | 中国第一汽车股份有限公司 | Electric waste gas bypass valve control method and device, vehicle and storage medium |
| CN114370344A (en) * | 2022-01-19 | 2022-04-19 | 潍柴动力股份有限公司 | Engine air intake control method |
| CN115370489A (en) * | 2022-08-31 | 2022-11-22 | 广西玉柴船电动力有限公司 | Air intake control method capable of improving engine efficiency |
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