CN104454195B - For controlling the method and system of the operating temperature of supercharging device - Google Patents
For controlling the method and system of the operating temperature of supercharging device Download PDFInfo
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- CN104454195B CN104454195B CN201410483122.0A CN201410483122A CN104454195B CN 104454195 B CN104454195 B CN 104454195B CN 201410483122 A CN201410483122 A CN 201410483122A CN 104454195 B CN104454195 B CN 104454195B
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 230000007613 environmental effect Effects 0.000 claims description 11
- 230000003679 aging effect Effects 0.000 claims description 5
- 230000006870 function Effects 0.000 description 9
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
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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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D23/00—Controlling engines characterised by their being supercharged
-
- 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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Control Of Temperature (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
This application involves the method and systems of the operating temperature for controlling supercharging device.It is a kind of for controlling the work temperature of the supercharging device of vehicleXMethod, this method comprises: determine increasing apparatus work at present pressure PXWith target boost pressure PLIMBetween pressure differential Δ P (100), in target boost pressure PLIMLower supercharging device operates in operating temperature limit TLIMPlace；Determine pressure step pitch size dP (110), wherein pressure step pitch size dP is the function of pressure differential Δ P Yu scheduled pressure step pitch number N；And work at present pressure P is continuously adjusted with pressure step pitch size dP (120)XUntil the work temperature of supercharging deviceXIt is substantially equal to operating temperature limit TLIM。
Description
Technical field
The present invention relates to a kind of for controlling the method and system of the operating temperature of supercharging device, and specifically, but not
The operating pressure of pressure booster is merely related to, so that the operating temperature of the supercharging device is substantially equal to operating temperature pole
Limit.
Background technique
Supercharging device is to increase and be supplied to engine via inlet manifold such as turbocharger and mechanical supercharger
Air pressure purpose, the component that can be used together with the engine of vehicle.Increase into the air pressure of engine can
Lead to the raising of engine performance and/or efficiency.
However, the air pressure can increased amount will receive supercharging device operating temperature limit restriction, such as most
Big gas outlet temperature.It can lead to supercharging device itself or in-engine portion more than the operating temperature limit certain time
The damage of part can influence the long-term reliability of vehicle.Therefore, the work of supercharging device can be limited according to the reliability requirement of vehicle
Make temperature.
In order to reduce the operating temperature of supercharging device, operating pressure (such as the pressure ratio at supercharging device both ends) must be limited
System.However, the operating pressure of limitation supercharging device will limit engine performance and can whole fuel economy to vehicle not
Benefit.
In order to obtain maximum engine efficiency and performance, it is desirable to operate, make under conditions of close to operating temperature limit
The boost pressure for getting the conveying of self-supercharging device maximizes.Therefore, it is desirable to accurately and consistently by the work of supercharging device
Temperature controls in operating temperature limit, to reach obtainable best performance, and meets reliability requirement.
It has been recognized that supercharging device is with the efficiency of the pressure ratio dependent on quality stream and its both ends by it at it
Compression in normal range of operation.Supercharging device manufacturer would generally supply compressor map, draw isentropic efficiency and compression
Machine speed is to the contour of air mass flow rate and compression ratio, on the basis of inlet temperature.
The known operating temperature estimated value that supercharging device is calculated using mass flowrate and the pressure ratio at device both ends.The outlet
Temperature estimate value then can be by closed loop controller for iteratively reducing operating pressure, until operating temperature estimated value is lower than work
Make temperature extremes.However, there are many tradeoff and the limited dynamic sound of disadvantage, such as calibration difficulties, stability for this method
It answers.In addition, in this way when, for reach the desired operating pressure at operating temperature limit may need largely repeatedly
In generation, this may be computationally expensive and and the result is that insensitive.
Therefore, it is intended that directly calculating the supercharging device has to operate at boost pressure therein, to make operating temperature
It is substantially equal to operating temperature limit.However, this is not simply to realize, because mass flowrate itself is the letter of boost pressure
Number, and efficiency is the function of the two.
Of the invention attempts to solve these problems.
Summary of the invention
According to the first aspect of the invention, it provides a kind of for controlling the side of the operating temperature of the supercharging device of vehicle
Method, which comprises determine the pressure difference between the work at present pressure of supercharging device and target boost pressure, increase in target
Supercharging device operates in operating temperature limit under pressure pressure；Pressure step pitch (pressure step) size is determined, wherein the pressure
Power step pitch size is the function of pressure difference and scheduled pressure step pitch number；And work at present is adjusted continuously with pressure step pitch size
Pressure is substantially equal to operating temperature limit until the operating temperature of supercharging device.
This method may further comprise determining the estimated value of target boost pressure, the supercharging device under the target boost pressure
Operate in operating temperature limit.The estimated value of target boost pressure can be based on the effect of the supercharging device under work at present pressure
Rate.Target working pressure can be the operating temperature limit and scheduled pressurization-quality air properties of flow function of supercharging device.
Scheduled pressurization-quality air properties of flow of supercharging device is related with the efficiency of supercharging device.The scheduled pressurization-of supercharging device
Quality air properties of flow can be the characteristic performance figure of supercharging device, and the isentropic efficiency and operating rate which draws are to quality sky
The contour of the compression ratio of air-flow and supercharging device, on the basis of the gas inlet temperature of supercharging device.
The operating pressure for adjusting the supercharging device may include being continuously reduced supercharging device with first pressure step pitch size
Work at present pressure.The operating pressure for adjusting the supercharging device may include that pressurization dress is increased continuously with second pressure step pitch size
The work at present pressure set.This method can also include that the work of supercharging device is continuously reduced with the first pressure step pitch size
Then pressure increases continuously the operating pressure of supercharging device with second pressure step pitch size.
The work at present pressure of supercharging device can continuously be reduced with first pressure step pitch size, until supercharging device
Operating temperature is lower than operating temperature limit.The work at present pressure of supercharging device can continuously be increased with second pressure step pitch size
Add, until the operating temperature of supercharging device is higher than operating temperature limit.
Second pressure step pitch size can be less than first pressure step pitch size.Second pressure step pitch size can be first
The divisor of pressure step pitch size.
This method may further include: determine the current operating temperature of supercharging device；And compare current operating temperature
With operating temperature limit.
This method may further include: current operating temperature repeatedly be adjusted, until current operating temperature is lower than or high
In operating temperature limit.
Scheduled step pitch number can be selected according to the performance requirement of supercharging device and/or vehicle.Scheduled pressure step pitch
Number can be related to optimal computed number.
Operating temperature limit can be the function of the performance requirement of supercharging device and/or vehicle.Operating temperature limit can be with
It is selected according to environmental pressure.Operating temperature limit can be selected according to the aging action of supercharging device and/or vehicle.Work
Temperature extremes can be variable or fixed.Operating temperature can be the gas outlet temperature of supercharging device.
According to another aspect of the present invention, a kind of system of the operating temperature of supercharging device for controlling vehicle is provided,
The system includes: one or more control devices, is configured as: determining and increases in the work at present pressure and target of supercharging device
Pressure difference between pressure pressure, supercharging device operates in operating temperature limit under target boost pressure；Determine that pressure step pitch is big
It is small, wherein the pressure step pitch size is the function of the pressure difference and scheduled pressure step pitch number；And signal is provided, such as
To the signal of system pressure adjuster, with the pressure of pressure booster, if the signal is configured to adjust work at present pressure
Dry-pressing power step pitch, so that the operating temperature of supercharging device is substantially equal to operating temperature limit.
The system can also include the one or more temperature sensors for being configured as the temperature of measurement supercharging device.This is
System can also include the pressure for being configured as measurement supercharging device and/or one or more pressure sensors of environmental pressure.Control
Device processed can be a real-time embedded controller.
Vehicle or engine may include the above system for controlling the operating temperature of supercharging device.
Supercharging device can be turbocharging or mechanical supercharger.Supercharging device can be compressor, such as engine driven supercharging
The compressor of device or turbocharger.Alternatively, supercharging device can be turbine, such as the turbine of turbocharger.
Claimed is a kind of alternative manner herein, it uses the knowledge of boost pressure/quality stream relationship
To solve the highest boost pressure for causing compressor exit temperature at operating temperature limit.
Any of above pressure mentioned can be the pressure ratio of supercharging device.For example, pressure ratio can be supercharging device
The ratio of inlet pressure and outlet pressure.
The present invention also provides softwares, such as computer program or computer for executing any method described herein
Program product, and with the computer-readable medium for being stored thereon the program for executing any method as described herein.
Embodying computer program of the invention can store on a computer-readable medium, or can be, for example, the form of signal,
Such as from internet website provide can downloading data signal or it can be any other form.
Control device can be further configured to execute any of above method.
Detailed description of the invention
The disclosure in order to better understand, and more clearly illustrate how to put to it into practice, it will pass through now
Citing refers to attached drawing, in which:
Fig. 1 shows the flow chart of the method for the operating temperature for controlling supercharging device；
The flow chart for the step of Fig. 2 shows the estimated values of determining target boost pressure；
Fig. 3 shows the flow chart of the method for the operating temperature for controlling supercharging device, and this method includes determining target
The step of estimated value of boost pressure；
Fig. 4 shows the step of current operating temperature of determining supercharging device and by current operating temperature and operating temperature limit
The flow chart for the step of being compared；
Fig. 5 shows the flow chart of the method for the operating temperature for controlling the supercharging device, this method comprises: determining
The step of current operating temperature of the supercharging device and the step of be compared current operating temperature with operating temperature limit；
Fig. 6 shows the flow chart of the method for the operating temperature for controlling the supercharging device, this method comprises: reducing
The step of pressure of the step of operating pressure of supercharging device and increase supercharging device；
Fig. 7 shows the illustrated example of operating temperature of this method for controlling supercharging device；And
Fig. 8 shows the system of the operating temperature for controlling supercharging device.
Specific embodiment
The present invention provides a kind of for controlling (the pressure of such as turbocharger or mechanical supercharger of the supercharging device in vehicle
Contracting machine) operating temperature method and system, wherein the boost pressure of supercharging device is adjusted so that the work temperature of supercharging device
Spend Tx(such as gas outlet temperature) is substantially equal to operating temperature limit TLIM.In this way, the increasing generated by supercharging device
Pressure pressure is permitted maximum for one group of given working stamndard (reliability/of such as supercharging device or the performance of engine)
Boost pressure.Succinctly to describe this method, it is assumed that operating temperature limit TLIMSingle fixed value, but depend on it is several because
Element can be variable, such as the operating condition of vehicle and/or the experience of engine that are discussed below and aging in practice.
The first purpose of the system is to make operating temperature be substantially equal to operating temperature limit TLIMIt is confined
Supercharging device is run under pressure.Following method describes a kind of this control of realization, efficiently implements and calibrates, and makes pressurization dress
It sets, the maximized method of the performance of engine and/or vehicle.
Fig. 1 shows the method for the operating temperature of the supercharging device for controlling vehicle.This method includes determining pressurization dress
The work at present pressure P setxWith target boost pressure PLIMBetween pressure differential Δ P step 100, wherein in target supercharge pressure
Power PLIMThe work temperature of lower supercharging devicexIt is substantially equal to operating temperature limit TLIM.Pressure differential Δ P is true by following equation
It is fixed:
Δ P=Px-PLIM
This method further comprises determining the step 110 of pressure step pitch size dP, and wherein pressure step pitch size dP is pressure
The function of poor Δ P and scheduled step pitch number N.Pressure step pitch size dP is determined by following equation:
This method further includes with the operating pressure P of pressure step pitch size dP continuously pressure boosterxUntil pressurization fills
The work temperature setxIt is substantially equal to operating temperature limit TLIMStep 120, can indicate are as follows:
TX≈TLIM
The operating pressure P of supercharging devicexCan be adjusted by changing by the quality stream of the device, for example, adjusting around
Cross the by-passing valve in the channel of supercharging device.For example, bypass passageways may be configured as the turbine around turbocharger and pass through
The sub-fraction stream of bypass passageways can be adjusted to alter operating pressure Px.Alternatively, defeated in the case where mechanical supercharger
The power for being sent to the compressor of mechanical supercharger can be changed, to adjust the speed of service to adjusting work pressure Px。
In this way, the current operating temperature T of supercharging devicexTo be similar to several step pitch quilts of scheduled step pitch number N
Iteratively adjustment is substantially equal to operating temperature limit TLIMValue.As shown in Figure 8, scheduled step pitch number N can with by controlling
The desired calculation times that device 1 executes are related.As for example real-time embedded controller can be used according to the method for the present invention
It realizes, this is favourable.Therefore, it is intended that being provided in scheduled step pitch number using the required least calculating of control device 1
Find a solution in source.
This method may further include step 130, as shown in Figure 2, including determining target boost pressure PLIM's
Estimated value, supercharging device operates in operating temperature limit T under the target boost pressureLIM.Target boost pressure will be desired based on
PLIMUnder supercharging device efficiency etaLIMDetermine target boost pressure PLIMEstimated value.However problem occurs, in target supercharge
Pressure PLIMUnder supercharging device efficiency etaLIMIt itself is target boost pressure PLIMWith the function of the mass flowrate by device.
The mass flowrate is also target boost pressure PLIMFunction.This leads to tool, and there are two the equations of known variables, therefore to target
Boost pressure PLIMIt is difficult to solve.
However, target boost pressure PLIMEstimated value can replace use in work at present pressure PXUnder current efficiency ηX
It determines, wherein the current efficiency η of supercharging deviceXEnvironment and engine work that can be easily given for one group from supercharging device
The scheduled pressurization quality air properties of flow of condition determines.Such data can usually be obtained in the form of performance plot, wherein should
Contour of the isentropic efficiency and operating rate that figure depicts to air mass flow rate and pressure ratio.For example, target boost pressure
PLIMEstimated value can be following function: inlet pressure PIN；In work at present pressure PXUnder current efficiency ηX；Work temperature
Spend limit TLIM；The gas inlet temperature T of supercharging deviceIN；With the ratio of the specific heat of airγ.Target boost pressure PLIMIt can make
It is calculated with following equation:
PLIM=PIN(ηX(TLIM/TIN-1)+1)γ/γ-1
Wherein for target boost pressure PLIMThere may be multiple solutions, use highest solution.As shown in figure 3, step 130
It can be incorporated into this method.
This method may further include the current operating temperature T of determining supercharging deviceXStep 140 and by work at present
Temperature TXWith operating temperature limit TLIMThe step 141 being compared.In this way, control device 1 may be able to determine that currently
Work temperatureXWhether operating temperature limit T is greater thanLIM, and then determine whether adjustment work at present pressure P should be taken action toX
To reduce the temperature T of supercharging deviceX.In operating pressure PXUnder current operating temperature TXIt can be in step 140 by following
Equation determines, wherein the current operating temperature T of supercharging deviceXIt is following function: gas inlet temperature TIN；Work at present pressure
Power PX；In work at present pressure PXUnder current efficiency ηX；The inlet pressure P of supercharging deviceIN；With the ratio γ of the specific heat of air.
Alternatively, the current operating temperature of the supercharging device can be determined by one or more temperature sensors.
TX=TIN(1+1/ηX((PX/PIN)γ-1/γ-1))
Fig. 4 shows current operating temperature TXBe how to determine and with operating temperature limit TLIMThe example flow being compared
Figure.If control device 1 determines current operating temperature TXGreater than operating temperature limit TLIM, then action appropriate can be taken to drop
Low current operating temperature TX.If control device 1 determines current operating temperature TXLower than operating temperature limit TLIM, then supercharging device
It can continue in work at present pressure PXPlace's operating.Step 141 may be repeated, for example, periodic test work temperatureXNo
More than operating temperature limit TLIM.Fig. 5 shows how step 140 and step 141 can be incorporated into the work temperature of control supercharging device
Spend TXMethod an example.
As discussed above, include the steps that determining pressure step pitch size dP 110 according to the method for the present invention and adjust work
Make pressure PXStep 120, as shown in Fig. 1,3 and 5.In addition, this method may include: determining first pressure step pitch size dP1's
Step 111 and with first pressure step pitch dP1It is continuously reduced the operating pressure P of supercharging deviceXStep 121；And it is later determined that
Two step pitch size dP2Step 112 and by second pressure step pitch size dP2The operating pressure for increasing continuously supercharging device step
Rapid 122.However, it is to be appreciated that second pressure step pitch size dP2It can be at any point in this method before step 122
It determines.
Step 121 may include determining first pressure step pitch size dP in a manner of being similar to pressure step pitch size dP1, i.e.,
First pressure step pitch size dP1It is pressure differential Δ P and scheduled step pitch number N1Function.First pressure step pitch size dP1It can be by
Following equation determines:
Step 121 may include with first pressure step pitch size dP1It is continuously reduced the P of the operating pressure of supercharging deviceXUntil
Work temperatureXLower than operating temperature limit TLIM.Step 121 can also be included in each operating pressure PXPressurization is determined after decline
The work temperature of deviceX.Work temperatureXCan it is determining according to method such as outlined above and then with operating temperature limit TLIMPhase
Compare.If work temperatureXHigher than operating temperature limit TLIM, then the operating pressure P of supercharging deviceXIt is walked again with first pressure
Away from size dP1It reduces.The number of iterations of step 121 is similar to scheduled step pitch number N1.In this way, for supercharging device
Work temperatureXIt is reduced to operating temperature limit TLIMUnder needed for calculation times can be selected according to the computing resource of distribution.
Furthermore, it is possible to select scheduled step pitch number N1, to ensure the work temperature in supercharging deviceXAlways drop below operating temperature
Limit TLIMValue.
Step 112 can include determining that second pressure step pitch size dP2, wherein the second pressure step pitch size dP2It is
One pressure step pitch size dP1With another scheduled step pitch number N2Function.Second pressure step pitch size dP2It can be by such as the following
Formula determines:
In this way, second pressure step pitch size dP2First pressure step pitch size dP can be less than1.In fact, second
Pressure step pitch size dP2It can be first pressure step pitch size dP1Divisor.
Alternatively, step 112 may include determining second pressure step pitch in a manner of being similar to pressure step pitch size dP
Size dP2, i.e. second pressure step pitch size dP2It is pressure differential Δ P and another scheduled step pitch number N3Function.Second pressure step
Away from size dP2Can be determined by following equation:
Step 122 may include with second pressure step pitch size dP2Increase continuously the operating pressure P of supercharging deviceX, until
Work temperatureXHigher than operating temperature limit TLIM.Step 122 can also be included in each operating pressure PXPressurization is determined after increase
The work temperature of deviceX.Work temperatureXCan according to it is outlined above be determined simultaneously then with operating temperature limit TLIMIt compares
Compared with.If work temperatureXLower than operating temperature limit TLIM, then the operating pressure P of supercharging deviceXAgain with pressure step pitch size
dP2Increase.The number of iterations of step 122 is similar to scheduled step pitch number N2Or N3.In this way, the work to make supercharging device
Make temperature TXGreater than operating temperature limit TLIMRequired calculation times can be selected according to the computing resource distributed.In addition,
It can choose scheduled step pitch number N2Or N3, to ensure the work temperature in supercharging deviceXAlways rise above operating temperature
Limit TLIMValue.
In this way, operating pressure PXWith biggish first pressure step pitch size dP1Continuous decline, until operating temperature
TXLower than operating temperature limit TLIM, after this, operating pressure PXWith lesser second pressure step pitch size dP2It continuously enlarges,
Until work temperatureXHigher than operating temperature limit TLIM.Lesser second pressure step pitch size dP2It can be by suitably scheduled
Step pitch number N2It determines, so that work temperatureXIt is only above operating temperature limit TLIMTo get the operating pressure P arrivedXIt will be so that work
Make temperature TXVery close operating temperature limit TLIM。
Taking to adjust the operating pressure P of supercharging device shown in Fig. 7XSo that current operating temperature TXIt is substantially equal to work
Make temperature extremes TLIMThe step of illustrated example.In the example depicted in fig. 7, supercharging device is in operating pressure PXAnd work at present
Temperature TXLower operation.An example according to the method for the present invention is illustrated now with reference to Fig. 6 and Fig. 7, wherein this method
Include:
Determine the current operating temperature T of supercharging deviceXStep 140 and compare current operating temperature TXWith operating temperature
Limit TLIMStep 141.In this way, control device 1 determines current operating temperature TXGreater than operating temperature limit TLIM, and
Therefore it should take steps to adjust work at present pressure PXTo reduce the work temperature of supercharging deviceX；
Determine target boost pressure PLIMEstimated value step 130, supercharging device operates under target boost pressure
Operating temperature limit TLIM；
Determine the work at present pressure P of supercharging deviceXWith target boost pressure PLIMIt (is pressurized under target boost pressure
The work temperature of deviceXIt is substantially equal to operating temperature limit TLIM) between pressure differential Δ P step 100；
Determine first pressure step pitch size dP1Step 111；And
With first pressure step pitch size dP1It is continuously reduced the operating pressure P of supercharging deviceXStep 121 and every time
One pressure step pitch size dP1Compare current operating temperature T after declineXWith operating temperature limit TLIMStep 141.
In the example shown in Fig. 7, scheduled pressure step pitch number N1It has been set to 4.However, it is to be appreciated that scheduled
Pressure step pitch number N1It can be set as any suitable value.Due to target boost pressure PLIMThe estimated value of first calculated be close
As, step pitch number actually required can be than scheduled pressure step pitch number N1It is greater or lesser.Step 121 is repeated, until working as
Preceding work temperatureXLower than operating temperature limit TLIM。
The method further includes:
Determine second pressure step pitch size dP2Step 112；And
With second pressure step pitch size dP2Increase continuously the P of the operating pressure of supercharging deviceXStep 122 and every time the
Two pressure step pitch size dP2Compare current operating temperature T after increaseXWith operating temperature limit TLIMStep 141.
In the example shown in Fig. 7, scheduled pressure step pitch number N2It has been set to 2.However, it is to be appreciated that scheduled
Pressure step pitch number N2Also it can be set as any suitable value.Due to target boost pressure PLIMThe estimated value of first calculated be
Approximately, step pitch number actually required can be than scheduled pressure step pitch number N2It is greater or lesser.Step 122 is repeated, until
Current operating temperature TXGreater than operating temperature limit TLIM.Due to second pressure step pitch size dP2It is relatively small, such as relative to
dP1, current operating temperature is substantially equal to the operating temperature limit T of supercharging deviceLIM.However, being in alternative example
Ensure work temperatureXLower than operating temperature limit TLIM, supercharging device can run work previous before previous step 122
Make pressure PXPlace.
Scheduled step pitch number N, N1、N2、N3And/or operating temperature limit TLIMIt can be according to supercharging device and/or vehicle
Performance requirement selection.If necessary to quickly adjustment, scheduled step pitch number N, N can choose2、N3, so that operating pressure PXWith compared with
Few step pitch number is adjusted, or alternatively, if necessary to more accurate solution, then to be adjusted compared with multi-pace number.For example, such as
The scheduled pressure step pitch number N of fruit2It is set as 20, then this method will be converged in work temperatureXMore accurate solution on, but need
More computing resources are to obtain the solution.Similarly, if the intended performance of supercharging device 1 is short, operating temperature limit TLIMIt can
To be selected at higher level.In this way, the boost pressure of supercharging device can be maximized, and in the extended period
The interior reliability about supercharging device is inapparent.
Operating temperature limit TLIMIt can be selected according to the aging action of supercharging device.For example, operating temperature limit TLIM
It can be set to follow than small number of operating has been completed in the supercharging device that greater number of operation cycle is completed
Lower level in the supercharging device of ring.Aging action can determine at service intervals appropriate, and can be according to pressurization
The perception wear rate of device selects.
Operating temperature limit TLIMIt can be selected according to the environmental pressure of supercharging device.For example, when be installed to operate in compared with
When vehicle at High aititude, operating temperature limit TLIMHigher level can be set in.In this way, supercharging device 1 can produce
Raw higher boost pressure, to compensate at those compared with the environmental pressure reduced at High aititude.
Operating temperature limit TLIMCan be set at fixed value and/or can be it is variable, this depend on supercharging device and/
Or the service requirement of vehicle.For example, aging action can be set to the operation cycle increase with supercharging device and automatically adjust.
In another example, control device 1 can be configured for the environmental condition of detection vehicle periphery.Control device can be configured for
Determine the temperature in atmospheric pressure and/or its dependent variable.Operating temperature limit TLIMIt can be changed according to the variation of environmental condition
Become, so that the reliability and/or performance of supercharging device are maximized according to environmental condition.Operating temperature limit TLIMIt controls whether to swash
It is living to may depend on environmental condition and engine performance requirement, but for making compared with High aititude and compared with the vehicle under high environment temperature
With operating temperature limit TLIMIt will be suitable for a big chunk of engine operation.
Fig. 8 shows the system according to the present invention 10.System 10 includes control device 1 and system pressure adjuster 3.Control dress
1 is set to be configured for determining the work at present pressure P of supercharging devicexWith target boost pressure PLIM(supercharging device is transported under the pressure
Row is in operating temperature limit TLIM) between pressure differential Δ P.Control device is further configured for determining pressure step pitch size
DP, wherein pressure step pitch size dP is pressure differential Δ P and scheduled pressure step pitch number N1Function.Control device 1 further by
It is configured to provide signal to system pressure adjuster 3, system pressure adjuster 3 is configured for the pressure of pressure booster
Power, and the signal is configured for adjusting several scheduled pressure step pitch number N of work at present pressure1, so that supercharging device
Work temperatureXIt is substantially equal to operating temperature limit TLIM。
The system can further comprise one or more temperature sensors, be configured for measurement temperature, such as be pressurized
The gas access of device and/or gas outlet temperature；And/or one or more pressure sensors, it is configured for measurement pressure
Power, such as the entrance and/or outlet pressure and/or environmental pressure of supercharging device.In addition, control device 1 can be Real-time embedding
Formula controller.
Claims (23)
1. a kind of method of the operating temperature for the supercharging device for controlling vehicle, which comprises
The pressure difference between the work at present pressure of the supercharging device and target boost pressure is determined, in the target supercharge pressure
The supercharging device operates at operating temperature limit under power；
Pressure step pitch size is determined, wherein the pressure step pitch size is the letter of the pressure difference and scheduled pressure step pitch number
Number；And
The work at present pressure is continuously adjusted until the operating temperature of the supercharging device with the pressure step pitch size
It is substantially equal to the operating temperature limit.
2. according to the method described in claim 1, the method further includes:
Determine the estimated value of the target boost pressure.
3. according to the method described in claim 2, wherein the estimated value of the target boost pressure is filled based on the pressurization
Set the efficiency under the work at present pressure.
4. method according to any one of claim 1-3, wherein adjusting the operating pressure packet of the supercharging device
It includes:
The work at present pressure of the supercharging device is continuously reduced with first pressure step pitch size；And
Then, the work at present pressure of the supercharging device is increased continuously with second pressure step pitch size.
5. according to the method described in claim 4, wherein the work at present pressure of the supercharging device is with first pressure
Power step pitch size is continuously reduced the operating temperature until the supercharging device lower than the operating temperature limit.
6. according to the method described in claim 4, wherein the operating pressure of the supercharging device is walked with the second pressure
It increases continuously away from size until the operating temperature of the supercharging device is higher than the operating temperature limit.
7. according to the method described in claim 4, wherein the second pressure step pitch size is big less than the first pressure step pitch
It is small.
8. according to the method described in claim 4, wherein the second pressure step pitch size is the first pressure step pitch size
Divisor.
9. according to the method described in claim 1, the method further includes:
Determine the current operating temperature of the supercharging device；And
Compare the current operating temperature and the operating temperature limit.
10. according to the method described in claim 9, the method further includes:
The current operating temperature is adjusted repeatedly until the current operating temperature is below or above the operating temperature limit.
11. according to the method described in claim 1, wherein the scheduled pressure step pitch number according to the supercharging device and/or
The performance requirement of the vehicle selects.
12. according to the method described in claim 1, wherein the operating temperature limit is the supercharging device and/or the vehicle
Performance requirement function.
13. according to the method described in claim 1, wherein the scheduled pressure step pitch number is related to optimal computed number.
14. according to the method described in claim 1, wherein the operating temperature limit is determined according to environmental pressure.
15. according to the method described in claim 1, wherein the operating temperature limit is according to the supercharging device and/or described
The aging action of vehicle determines.
16. according to the method described in claim 1, wherein the operating temperature limit is variable or fixed.
17. according to the method described in claim 1, wherein the operating temperature is the gas outlet temperature of the supercharging device.
18. according to the method for claim 17, wherein the supercharging device is turbocharger or mechanical supercharger.
19. a kind of system of the operating temperature for the supercharging device for controlling vehicle, the system comprises:
One or more control devices, are configured for:
The pressure difference between the work at present pressure of the supercharging device and target boost pressure is determined, in the target supercharge pressure
The supercharging device operates at operating temperature limit under power；
Pressure step pitch size is determined, wherein the pressure step pitch size is the letter of the pressure difference and scheduled pressure step pitch number
Number；And
Signal is provided to adjust the pressure of the supercharging device, if the signal is configured for adjusting the work at present pressure
Dry-pressing power step pitch, so that the operating temperature of the supercharging device is substantially equal to the operating temperature limit.
20. system according to claim 19, the system further comprises:
One or more temperature sensors are configured for measuring the temperature of the supercharging device；And/or
One or more pressure sensors are configured for measuring the pressure and/or environmental pressure of the supercharging device.
21. system described in any one of 9 or 20 according to claim 1, wherein the control device is real-time embedded control
Device.
22. a kind of computing device makes the computing device implement claim 1- with software when executing the software
Method described in any one of 17.
23. a kind of vehicle or engine comprising control the pressurization dress of vehicle described in any one of 9-21 according to claim 1
The system for the operating temperature set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1316667.3 | 2013-09-19 | ||
| GB1316667.3A GB2518389B (en) | 2013-09-19 | 2013-09-19 | Method and system for controlling the operating temperature of a boost pressure device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454195A CN104454195A (en) | 2015-03-25 |
| CN104454195B true CN104454195B (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410483122.0A Expired - Fee Related CN104454195B (en) | 2013-09-19 | 2014-09-19 | For controlling the method and system of the operating temperature of supercharging device |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN104454195B (en) |
| DE (1) | DE102014218058A1 (en) |
| GB (1) | GB2518389B (en) |
| RU (1) | RU2665011C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013171B (en) * | 2022-05-09 | 2023-06-23 | 潍柴动力股份有限公司 | Control method and device for improving engine high motive power and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101657621A (en) * | 2007-04-16 | 2010-02-24 | 欧陆汽车有限责任公司 | Turbocharger having a device for detecting a malfunction of the turbocharger and a method for detecting such a malfunction |
| CN102465775A (en) * | 2010-11-15 | 2012-05-23 | 福特环球技术公司 | Method for avoiding turbocharger damage |
| CN103119268A (en) * | 2010-12-07 | 2013-05-22 | 丰田自动车株式会社 | Control device for internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005180362A (en) * | 2003-12-22 | 2005-07-07 | Toyota Motor Corp | Control device of engine system |
| DE102004015742A1 (en) * | 2004-03-31 | 2005-10-27 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine |
| US7305825B2 (en) * | 2004-10-14 | 2007-12-11 | General Motors Corporation | Engine turbine temperature control system |
| GB2487952B (en) * | 2011-02-10 | 2016-07-13 | Ford Global Tech Llc | A method for controlling the operation of a compressor |
| EP2543845A1 (en) * | 2011-07-05 | 2013-01-09 | Ford Global Technologies, LLC | Method for determination of exhaust back pressure |
-
2013
- 2013-09-19 GB GB1316667.3A patent/GB2518389B/en not_active Expired - Fee Related
-
2014
- 2014-09-10 DE DE201410218058 patent/DE102014218058A1/en not_active Withdrawn
- 2014-09-10 RU RU2014136579A patent/RU2665011C2/en not_active IP Right Cessation
- 2014-09-19 CN CN201410483122.0A patent/CN104454195B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101657621A (en) * | 2007-04-16 | 2010-02-24 | 欧陆汽车有限责任公司 | Turbocharger having a device for detecting a malfunction of the turbocharger and a method for detecting such a malfunction |
| CN102465775A (en) * | 2010-11-15 | 2012-05-23 | 福特环球技术公司 | Method for avoiding turbocharger damage |
| CN103119268A (en) * | 2010-12-07 | 2013-05-22 | 丰田自动车株式会社 | Control device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2665011C2 (en) | 2018-08-24 |
| RU2014136579A (en) | 2016-03-27 |
| GB2518389A (en) | 2015-03-25 |
| GB201316667D0 (en) | 2013-11-06 |
| GB2518389B (en) | 2020-02-12 |
| CN104454195A (en) | 2015-03-25 |
| DE102014218058A1 (en) | 2015-03-19 |
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