CN106740789A - The control method of automobile negative pressure pump - Google Patents
The control method of automobile negative pressure pump Download PDFInfo
- Publication number
- CN106740789A CN106740789A CN201610956558.6A CN201610956558A CN106740789A CN 106740789 A CN106740789 A CN 106740789A CN 201610956558 A CN201610956558 A CN 201610956558A CN 106740789 A CN106740789 A CN 106740789A
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- Prior art keywords
- mentioned
- negative
- threshold
- highland
- low land
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
Abstract
The control method of the automobile negative pressure pump that can stable, accurately and efficiently control negative pressure pump is provided.Method the present invention relates to produce the negative pressure pump (4) of negative pressure in the vacuum booster (2) for controlling to make automobile.The control method of the negative pressure pump (4) includes the mode handoff procedures switched over to low land control model and highland control model, low land control model is the control model of control negative pressure pump (4) when automobile is located at low land, highland control model is to be located at control model when height above sea level is higher than the highland of low land height using method control negative pressure pump (4) different from low land control model in automobile, in mode handoff procedures, 1st atmospheric pressure threshold value (b1) and the 2nd atmospheric pressure threshold value (b2) are set to different value, the value of atmospheric pressure when the 1st atmospheric pressure threshold value is from low land control mode switch to highland control model, the value of atmospheric pressure when the 2nd atmospheric pressure threshold value is from highland control mode switch to low land control model.
Description
Technical field
Control the present invention relates to produce the automobile negative pressure pump of the negative pressure pump of negative pressure in the vacuum booster that controls make automobile
Method processed.
Background technology
Usually, in the car, vacuum booster (or the brake boost made for auxiliary braking is may require that sometimes
Device) interior generation negative pressure, in such as diesel-engined vehicle, gasoline direct injection engine automobile, hybrid vehicle, idle stop automobile
In Deng the automobile with engine, in order to produce this negative pressure, and the air inlet produced in the induction pathway of engine is make use of
Negative pressure.However, in the automobile that way makes engine stop sometimes in operation such as such as hybrid vehicle, idle stop automobile,
The situation of the air-intake negative-pressure that can not utilize engine occurs.Therefore, in order to can also be obtained in vacuum booster in this condition
Negative pressure is obtained, and is additionally provided with negative pressure pump.And, in the automobile without engine such as such as electric automobile, fuel cell car
In, in order to obtain negative pressure in vacuum booster, it is also equipped with negative pressure pump.
In the control of negative pressure pump, in order to be able to obtain the negative pressure required for auxiliary braking, and following control is carried out：In vacuum
Negative pressure in booster be below the startup threshold value of regulation in the case of make negative pressure pump startup, it is and negative in vacuum booster
Stop negative pressure pump in the case of pressing more than the outage threshold for regulation.As one of the control method on this negative pressure pump
Example, it has been suggested that the change change according to atmospheric pressure starts the scheme of threshold value and outage threshold.(for example, referring to patent document 1 and specially
Sharp document 2.)
In addition, as another example of the control method on negative pressure pump, it has been suggested that following scheme：With the air according to regulation
Low land control model and highland are switched over control model on the basis of the switching threshold that pressure determines, above-mentioned low land control
Pattern refers to be controlled to make as the negative of the difference of the absolute pressure in atmospheric pressure and vacuum booster when automobile is located at low land
Pressure maintains control model within the limits prescribed, and above-mentioned highland control model refers to be located at height above sea level higher than low in automobile
The control model for making the absolute pressure in vacuum booster maintain within the limits prescribed is controlled during the highland of ground level.
(for example, referring to patent document 3.)
Prior art literature
Patent document
Patent document 1：Unexamined Patent 9-58457 publications
Patent document 2：Special table 2014-522768 publications
Patent document 3：Unexamined Patent 9-177678 publications
The content of the invention
Problems to be solved by the invention
However, change of travel speed of reduction, automobile in the atmospheric pressure due to motor vehicle environment etc. and vacuum booster
In the case that interior negative pressure reduces, it is possible to the negative pressure in vacuum booster can not be substantially ensured that.So, it is true due to cannot ensure
Required negative pressure in empty booster, in of the control method on above-mentioned negative pressure pump, negative pressure pump is possible to lasting fortune
Turn, as a result, the duration of runs of negative pressure pump is possible to elongated.In this case, the lifetime of negative pressure pump, and negative pressure pump
It is easy to produce failure.And, it is unfavorable continually to produce the action sound of negative pressure pump.That is, in the control method on negative pressure pump
One in, there is a problem of accurately and efficiently controlling negative pressure pump.
In addition, in another example of the control method on above-mentioned negative pressure pump, threshold is being switched in the atmospheric pressure of motor vehicle environment
Value nearby in the case of passage, is controlled because atmospheric pressure becomes smaller than switching threshold from low land control mode switch to highland
The situation of molding formula and because atmospheric pressure is changed into more than switching threshold from highland control mode switch to low land control mould
The situation of formula is possible to frequently generation, and the control of negative pressure pump is possible to become unstable.That is, in the control method on negative pressure pump
Another example in, there is a problem of accurately and efficiently controlling negative pressure pump.
The present invention is completed to solve the above problems, it is an object of the invention to provide can stabilization, accurate and high
The control method of the automobile negative pressure pump of effect ground control negative pressure pump.
The scheme for solving problem
For solve problem, the control method control of the automobile negative pressure pump of a mode of the invention and another way makes vapour
The negative pressure pump of negative pressure is produced in the vacuum booster of car, the control method is included：Low land control model and highland are controlled
The mode handoff procedures that pattern is switched over, above-mentioned low land control model refer to above-mentioned automobile be located at low land when control it is above-mentioned
The control model of negative pressure pump, above-mentioned highland control model refers to be located at height of the height above sea level higher than low land height in above-mentioned automobile
Using the control model that above-mentioned negative pressure pump is controlled from above-mentioned low land with the different method of control model during ground, in above-mentioned automobile with negative
In the control method of press pump, in above-mentioned mode handoff procedures, the 1st atmospheric pressure threshold value and the 2nd atmospheric pressure threshold value are set to difference
Value, atmospheric pressure when above-mentioned 1st atmospheric pressure threshold value is from above-mentioned low land control mode switch to above-mentioned highland control model
Value, air when above-mentioned 2nd atmospheric pressure threshold value is from above-mentioned highland control mode switch to above-mentioned low land control model
The value of pressure.Furthermore it is preferred that making above-mentioned 2nd atmospheric pressure threshold value be more than above-mentioned 1st atmospheric pressure threshold value.By this control, even if
It is atmospheric pressure in the case where the 1st or the 2nd atmospheric pressure Near Threshold is elapsed, can also prevents low land control model and highland control
Molding formula continually switches.As a result, can stablize, accurately and efficiently control negative pressure pump.
The control method of the automobile negative pressure pump of a mode of the invention, in above-mentioned low land control model, control
Making above-mentioned negative pressure pump makes the negative pressure in above-mentioned vacuum booster maintain in desired scope, and in the control of above-mentioned highland
In pattern, above-mentioned negative pressure pump is controlled the absolute pressure in above-mentioned vacuum booster is maintained in desired scope.Therefore, by
Negative pressure pump is controlled thus according to the absolute pressure in vacuum booster, thus the height of low atmospheric pressure is particularly being located at due to automobile
Ground and atmospheric pressure reduce in the case of, can also prevent due to the negative pressure required for cannot ensure auxiliary braking in vacuum booster
And cause negative pressure pump continuous running.As a result, the number of starts of negative pressure pump can be reduced, and when can shorten the driving of negative pressure pump
Between, therefore negative pressure pump can be efficiently controlled, so as to extend the life-span of negative pressure pump, and reduce the hair of the action sound from negative pressure pump
It is raw.
In the control method of the automobile negative pressure pump of another way of the invention, step also is changed comprising threshold value, upper
State in threshold value change step, the travel speed according to above-mentioned automobile changes low land negative threshold and highland negative threshold, on
State low land negative threshold and above-mentioned highland negative threshold is respectively set as on above-mentioned low land control model and above-mentioned highland
With the value of negative pressure when starting or stoping above-mentioned negative pressure pump under control model.Furthermore it is preferred that changing step in above-mentioned threshold value
In, above-mentioned low land negative threshold can be changed to the 1st low land negative threshold, the 2nd low land negative threshold and the 3rd low
Use negative threshold, above-mentioned 1st low land negative threshold is that low land when above-mentioned travel speed is in low land low-speed region is used
Negative threshold, above-mentioned 2nd low land negative threshold is above-mentioned travel speed bigger than above-mentioned low land low-speed region in speed
Low land negative threshold during low land intermediate speed region, is set greater than above-mentioned 1st low land negative threshold, above-mentioned 3rd low land
It is low when above-mentioned travel speed is in the speed low land high-speed region bigger than above-mentioned low land intermediate speed region with negative threshold
Use negative threshold, be set greater than above-mentioned 2nd low land negative threshold, and above-mentioned highland can be changed with negative threshold
It is the 1st highland negative threshold and the 2nd highland negative threshold, above-mentioned 1st highland negative threshold is at above-mentioned travel speed
Highland negative threshold when the low-speed region of highland, above-mentioned 2nd highland negative threshold is that above-mentioned travel speed is in speed
The highland negative threshold during medium high speed area bigger than above-mentioned highland low-speed region is spent, above-mentioned 1st highland is set greater than
Use negative threshold.It is further preferred that making above-mentioned 1st low land negative threshold equal with above-mentioned 1st highland negative threshold, make
Above-mentioned 2nd low land negative threshold is more than above-mentioned 2nd highland negative threshold, above-mentioned 3rd low land is more than with negative threshold
Above-mentioned 2nd highland negative threshold.By this control, can be according to the height above sea level of the location of automobile and the travel speed of automobile
Obtain more accurately negative pressure.In addition, the change of travel speed according to automobile changes the negative pressure in vacuum booster, therefore energy
Prevent change due to travel speed and the negative pressure in vacuum booster reduces, can prevent due to can not be true in vacuum booster
Protect auxiliary braking required for negative pressure and cause negative pressure pump continuous running.As a result, the number of starts of negative pressure pump can be reduced, and
And the driving time of negative pressure pump can be shortened, therefore negative pressure pump can be efficiently controlled, so as to extend the life-span of negative pressure pump, and reduce
The generation of the action sound from negative pressure pump.
Invention effect
The control method of the automobile negative pressure pump of a mode of the invention, can stable, accurately and efficiently control negative
Press pump.
Brief description of the drawings
Fig. 1 is the control system of the control method for schematically showing the negative pressure pump that can implement the 1st implementation method of the invention
The block diagram of system.
Fig. 2 is to represent the low land control model and highland control model for illustrating the 1st implementation method of the invention
Switching flow figure.
Fig. 3 is the figure of the flow for representing the low land control model for illustrating the 1st implementation method of the invention.
Fig. 4 is represented on being controlled from low land control mode switch to highland in the 1st implementation method of the invention
The figure of the curve of the relation of absolute pressure in height above sea level, vacuum booster and negative pressure and atmospheric pressure in the case of pattern.
Fig. 5 is represented on being controlled from highland control mode switch to low land in the 1st implementation method of the invention
The figure of the curve of the relation of absolute pressure in height above sea level, vacuum booster and negative pressure and atmospheric pressure in the case of pattern.
Fig. 6 is the figure of the flow for representing the highland control model for illustrating the 1st implementation method of the invention.
Fig. 7 is the travel speed of the automobile of the low land control model for representing second embodiment of the present invention, starts
The figure of the curve of the relation of negative threshold and stopping negative threshold.
Fig. 8 is to represent the startup of the low land control model for illustrating the 2nd implementation method of the invention and stop negative pressure
The figure of the flow of the change of threshold value.
Fig. 9 is the travel speed of the automobile of the highland control model for representing second embodiment of the present invention, starts
The figure of the curve of the relation of negative threshold and stopping negative threshold.
Figure 10 is to represent the startup of the highland control model for illustrating the 2nd implementation method of the invention and stop negative pressure
The figure of the flow of the change of threshold value.
Description of reference numerals
2 vacuum boosters
4 negative pressure pumps
The measured value of A atmospheric pressure
The value of A ' atmospheric pressure
The atmospheric pressure threshold values of b1 the 1st
The atmospheric pressure threshold values of b2 the 2nd
H height above sea level
The elevation thresholds of i1 the 1st
The elevation thresholds of i2 the 2nd
The measured value of D booster absolute pressures
The value of D ' booster absolute pressures
E starts absolute pressure threshold (highly with startup absolute pressure threshold)
F stops absolute pressure threshold (low land startup absolute pressure threshold)
P booster negative pressure calculates value
Q starts negative threshold (low land startup negative threshold)
R stops negative threshold (low land startup negative threshold)
S starts negative threshold (low land startup negative threshold)
S1 the 1st starts negative threshold (the 1st low land startup negative threshold)
S2 the 2nd starts negative threshold (the 2nd low land startup negative threshold)
S3 the 3rd starts negative threshold (the 3rd low land startup negative threshold)
T stops negative threshold (low land stopping negative threshold)
T1 the 1st stops negative threshold (the 1st low land stopping negative threshold)
T2 the 2nd stops negative threshold (the 2nd low land stopping negative threshold)
T3 the 3rd stops negative threshold (the 3rd low land stopping negative threshold)
U starts negative threshold (highly with startup negative threshold)
U1 the 1st starts negative threshold (the 1st highland startup negative threshold)
U2 the 2nd starts negative threshold (the 2nd highland startup negative threshold)
V stops negative threshold (highly with stopping negative threshold)
V1 the 1st stops negative threshold (the 1st highland stopping negative threshold)
V2 the 2nd stops negative threshold (the 2nd highland stopping negative threshold)
The measured value of W travel speeds
The value of W ' travel speeds
X1 the 1st starts speed threshold value (the 1st low land startup speed threshold value)
X2 the 2nd starts speed threshold value (the 2nd low land startup speed threshold value)
Y1 the 1st stops speed threshold value (the 1st low land stopping speed threshold value)
Y2 the 2nd stops speed threshold value (the 2nd low land stopping speed threshold value)
Z starts speed threshold value (highly with startup speed threshold value)
σ stops speed threshold value (highly with stopping speed threshold value)
L single dotted broken lines
M1, M2 solid line
N1, N2 double dot dash line
STP1~4,11~14,21~24,31~38,41~45 steps
Specific embodiment
[the 1st implementation method]
Illustrate the control method of the negative pressure pump of the 1st implementation method of the invention.
[control system]
First, the control system of the control method of the negative pressure pump that can implement present embodiment is illustrated.Additionally, in this embodiment party
In formula, used as one, control system is structured to the hybrid vehicle with engine.As shown in figure 1, control system 1
Possess the vacuum booster 2 of the braking for being configured to car assisted and the engine 3 of automobile.The control system 1 is also equipped with constituting
For the negative of the difference of the absolute pressure in vacuum booster 2 in atmospheric pressure and vacuum booster 2 of the generation as motor vehicle environment can be made
Press the electric negative pressure pump (hreinafter referred to as " negative pressure pump ") 4 of (hereinafter referred to as " booster negative pressure ").
Vacuum booster 2 is connected by the 1st vacuum line 5 with engine 3, and is connected by the 2nd vacuum line 6 and negative pressure pump 4
Connect.Booster negative pressure can be used in the air-intake negative-pressure produced in the induction pathway of engine 3 and the negative pressure produced by negative pressure pump 4
At least one party obtain.
And, control system 1 is included：Hybrid power system controller 7, consists of the drive that can control hybrid vehicle
Distribution of power etc.；ESP(Electronic Stability Program：ESP) module 8, its composition can carry out
Control for preventing the sideslip of automobile；And engine controller 9, consisting of can control engine 3.The control system 1
It is also equipped with：Power supply 10, its driving source for being used as negative pressure pump 4；Absolute pressure transducer 11, consisting of can measure vacuum booster
Absolute pressure (hereinafter referred to as " booster absolute pressure ") in 2, and it is assembled to vacuum booster 2；Atmosphere pressure sensor
12, consisting of can measure atmospheric pressure；And vehicle speed sensor 13, its travel speed that can measure automobile.Additionally, in this implementation
In mode, used as one, atmosphere pressure sensor 12 is assembled to engine 3.
Power supply 10 is electrically connected by the 1st rigid line 14 with negative pressure pump 4.From the 2nd rigid line that hybrid power system controller 7 extends
15 electrically connect via relay unit 16 with by the 1st rigid line 14 that negative pressure pump 4 and power supply 10 are connected.Hybrid power system controller
7 be configured to be cooperated with relay unit 16 and to maintaining the state of negative pressure pump 4 and the electrical connection of power supply 10 and cutting off this to be electrically connected
The state for connecing is switched over.And, absolute pressure transducer 11 is electrically connected by the 3rd rigid line 17 with ESP modules 8.Atmospheric pressure is passed
Sensor 12 is electrically connected by the 4th rigid line 18 with engine controller 9.Vehicle speed sensor 13 is by the 5th rigid line 19 and ESP modules 8
Electrical connection.
Hybrid power system controller 7 and ESP modules 8 are connected with each other using the 1st data transfer unit 20, with can be therebetween
Carry out data transmission.ESP modules 8 and engine controller 9 are connected with each other using the 2nd data transfer unit 21, with can be therebetween
Carry out data transmission.Additionally, at least one party in the 1st and the 2nd data transfer unit 20,21 is preferably CAN (Controller
Area Network：Controller LAN).
However, control system not limited to this of the invention, control system can also be structured to beyond hybrid vehicle
The automobile with engine, such as idle stop automobile etc., or be structured to the automobile without engine is for example electronic
Automobile, fuel cell car etc..Particularly, in the case of for the automobile without engine, control system has electronic
Machine replaces engine and engine controller, in this case, help with the motor controller for being configured to control the motor
Power device negative pressure is not the air-intake negative-pressure using the generation in the induction pathway of engine as the automobile with engine, but
It is controlled using the negative pressure produced by negative pressure pump.The control system can also in addition have be configured to maintain negative pressure pump with
The state of the electrical connection of power supply and cut off controller that the state of the electrical connection switches over and replace hybrid power system to control
Device.And, in the case where control system is used for idle stop automobile, control system can have and be configured to can be in idling
Make the controller that the function of engine stop is controlled to replace hybrid power system controller.
[control method]
Then, the control method of the negative pressure pump 4 of present embodiment is illustrated.In the control method of negative pressure pump 4, using above-mentioned
Control system 1 controls negative pressure pump 4.As shown in Fig. 2 in the control method of the negative pressure pump 4, can be to low land control model and height
Ground is switched over control model, and low land control model refers to the control model of the control negative pressure pump 4 when automobile is located at low land,
Highland control model refers to be located at when height above sea level is higher than the highland of low land height to use and low land control model in automobile
Different methods controls the control model of negative pressure pump 4.Under low land control model, control negative pressure pump 4 ties up booster negative pressure
Hold in desired scope, and under the control model of highland, control negative pressure pump 4 makes booster absolute pressure maintain institute
In desired scope.Describe in detail below this low land with and highland control model.
[switching of the low land with highland control model]
The situation of low land is located at using automobile in an initial condition to illustrate switching of the low land with highland control model.
As shown in Fig. 2 in the state of initial automobile is located at low land, using hybrid power system controller 7 in low land control model
Lower control negative pressure pump 4 (step STP1).The atmospheric pressure of motor vehicle environment is measured using atmosphere pressure sensor 12, by the measurement of atmospheric pressure
Value A is sent to engine controller 9 from atmosphere pressure sensor 12, then, by the measured value A of atmospheric pressure from engine controller 9
ESP modules 8 are sent to, and as needed, the measured value A of atmospheric pressure are sent to hybrid power system controller from ESP modules 8
7.Using at least one party in hybrid power system controller 7 and ESP modules 8 judge atmospheric pressure measured value A whether as
Below the 1st atmospheric pressure threshold value b1 (step STP2) of benchmark during from low land control mode switch to highland control model.
Additionally, the 1st atmospheric pressure threshold value b1 be the 1st elevation threshold i1 in the height above sea level H of the location of automobile in the case of atmospheric pressure
Value A ' quite.1st atmospheric pressure threshold value b1 is preferably from about 85kPa, but is only for one.
(that is, the 1st height above sea level threshold is less than in the case where the measured value A of atmospheric pressure is more than the 1st atmospheric pressure threshold value b1 in height above sea level H
In the case of value i1) (no), continue to control negative pressure pump 4 (step STP1) under low land control model.On the other hand, in air
The measured value A of pressure be below the 1st atmospheric pressure threshold value b1 in the case of (that is, in the situation that height above sea level H is more than the 1st elevation threshold i1
Under) (YES), using at least one party in hybrid power system controller 7 and ESP modules 8, the control of negative pressure pump 4 is used from low land
Control mode switch controls negative pressure pump 4 (step STP3) to highland control model under the control model of highland.Again
The atmospheric pressure of motor vehicle environment is measured using atmosphere pressure sensor 12, the measured value A of atmospheric pressure is sent from atmosphere pressure sensor 12
To engine controller 9, then, the measured value A of atmospheric pressure is sent to ESP modules 8 from engine controller 9, and according to need
Will, the measured value A of atmospheric pressure is sent to hybrid power system controller 7 from ESP modules 8.Controlled using hybrid power system
At least one party in device 7 and ESP modules 8 judge atmospheric pressure measured value A whether as from highland control mode switch to
More than the 2nd atmospheric pressure threshold value b2 (step STP4) of benchmark during low land control model.Additionally, the 2nd atmospheric pressure threshold value b2 with
The value A ' of the atmospheric pressure in the case of being the 2nd elevation threshold i2 in the height above sea level H of the location of automobile is quite.Additionally, it is preferred that the 2nd
Atmospheric pressure threshold value b2 is more than the 1st atmospheric pressure threshold value b1.2nd atmospheric pressure threshold value b2 is preferably from about 90kPa, but is only for one.More
It is preferred that the difference of the 1st and the 2nd atmospheric pressure threshold value b1, b2 is for about 5kPa.
(that is, it is more than the 2nd height above sea level threshold in height above sea level H in the case where the measured value A of atmospheric pressure is less than the 2nd atmospheric pressure threshold value b2
In the case of value i2) (no), continue to control negative pressure pump 4 (step STP3) under the control model of highland.On the other hand, in air
The measured value A of pressure be more than the 2nd atmospheric pressure threshold value b2 in the case of (that is, in the situation that height above sea level H is below the 2nd elevation threshold i2
Under) (YES), using at least one party in hybrid power system controller 7 and ESP modules 8, the control of negative pressure pump 4 is used from highland
Control mode switch controls negative pressure pump 4 (step STP1) to low land control model under low land control model.
[low land control model]
Situation about being stopped using negative pressure pump 4 in an initial condition describes low land control model in detail.As shown in figure 3, most
First negative pressure pump 4 is in the state (step STP11) for stopping.The atmospheric pressure of motor vehicle environment is measured using atmosphere pressure sensor 12, will
The measured value A of atmospheric pressure is sent to engine controller 9 from atmosphere pressure sensor 12, then, by the measured value A of atmospheric pressure from hair
Motivation controller 9 is sent to ESP modules 8.In addition, booster absolute pressure is measured using absolute pressure transducer 11, by power-assisted
The measured value D of device absolute pressure is sent to ESP modules 8.It is exhausted according to the measured value A and booster of the atmospheric pressure using ESP modules 8
Booster negative pressure is calculated to the measured value D of pressure calculates value P.As needed, booster negative pressure is calculated into value P from ESP moulds
Block 8 is sent to hybrid power system controller 7.Sentenced using at least one party in hybrid power system controller 7 and ESP modules 8
Disconnected booster negative pressure calculates whether value P is startup below negative threshold q (step STP12).
(no) in the case that value P is more than startup negative threshold q is calculated in booster negative pressure, negative pressure pump 4 is maintained and is stopped
State (step STP11) only.On the other hand, the value P that calculates in booster negative pressure is in the case of starting below negative threshold q
(YES), is electrically connected negative pressure pump 4 and power supply 10 using hybrid power system controller 7 and relay unit 16, so that negative pressure
Pump 4 starts (step STP13).The atmospheric pressure that atmosphere pressure sensor 12 measures motor vehicle environment is reused, by the measurement of atmospheric pressure
Value A is sent to engine controller 9 from atmosphere pressure sensor 12, then, by the measured value A of atmospheric pressure from engine controller 9
It is sent to ESP modules 8.In addition, booster absolute pressure is measured using absolute pressure transducer 11, by booster absolute pressure
Measured value D is sent to ESP modules 8.Using ESP modules 8 according to the measurement of the measured value A and booster absolute pressure of the atmospheric pressure
What value D calculated booster negative pressure calculates value P.As needed, the value P that calculates of booster negative pressure is sent to mixing from ESP modules 8
Power system controller 7.Judge booster negative pressure using at least one party in hybrid power system controller 7 and ESP modules 8
Calculate whether value P is to stop more than negative threshold r (step STP14).
(no) in the case that value P is less than stopping negative threshold r is calculated in booster negative pressure, negative pressure pump 4 is maintained and is opened
Dynamic state (step STP13).On the other hand, the value P that calculates in booster negative pressure is in the case of stopping more than negative threshold r
(YES), is cut off the electrical connection of negative pressure pump 4 and power supply 10 using hybrid power system controller 7 and relay unit 16, so that
Negative pressure pump 4 is set to stop (step STP11).
Additionally, stopping negative threshold r more than startup negative threshold q.It is preferred that start negative threshold q be for about more than 47kPa and
About below 67kPa, it is for about more than 60kPa and about below 74kPa preferably to stop negative threshold r, but is only for one.More preferably should
The difference for starting and stopping negative threshold q, r is for about more than 7kPa and about below 13kPa.
In addition, on from low land control model to highland control mode switch when Fig. 4 in, transverse axis represents automobile
Height above sea level H (m) of location, the longitudinal axis in left side represents the value D ' (Pa) of booster absolute pressure, and the longitudinal axis on right side represents big
The value A ' (Pa) of air pressure.In the Fig. 4, it is by list in regions of the height above sea level H less than the 1st elevation threshold i1 to start negative threshold q
The difference of the booster absolute pressure when atmospheric pressure that chain-dotted line L is represented starts with the negative pressure pump 4 represented by solid line M1, and stop
Negative threshold r is that the atmospheric pressure represented by single dotted broken line L in regions of the height above sea level H less than the 1st elevation threshold i1 is drawn with by two point
The difference of the booster absolute pressure when negative pressure pump 4 that line N1 is represented stops.
On from highland control model to low land control mode switch when Fig. 5 in, transverse axis is represented residing for automobile
Position height above sea level H (m), the longitudinal axis in left side represents the value D ' (Pa) of booster absolute pressure, and the longitudinal axis on right side represents atmospheric pressure
Value A ' (Pa).In the Fig. 5, it is by single-point in the region that height above sea level H is below the 2nd elevation threshold i2 to start negative threshold q
The difference of the booster absolute pressure when atmospheric pressure that line L is represented starts with the negative pressure pump 4 represented by solid line M2, and stop negative
Pressure threshold value r is that the atmospheric pressure represented by single dotted broken line L in the region that height above sea level H is below the 2nd elevation threshold i2 is drawn with by two point
The difference of the booster absolute pressure when negative pressure pump 4 that line N2 is represented stops.
[highly with control model]
Situation about being stopped using negative pressure pump 4 in an initial condition describes highland control model in detail.As shown in fig. 6, most
First negative pressure pump 4 is in the state (step STP21) for stopping.Booster absolute pressure is measured using absolute pressure transducer 11, will
The measured value D of booster absolute pressure is sent to ESP modules 8.As needed, by the measured value D of booster absolute pressure from ESP
Module 8 is sent to hybrid power system controller 7.Use at least one party in hybrid power system controller 7 and ESP modules 8
Whether the measured value D for judging booster absolute pressure is to start more than absolute pressure threshold e (step STP22).
In the case where the measured value D of booster absolute pressure is less than absolute pressure threshold e is started (no), by negative pressure pump 4
Maintain the state (step STP21) of stopping.On the other hand, value P is calculated to start absolute pressure threshold e in booster negative pressure
, be electrically connected for negative pressure pump 4 and power supply 10 using hybrid power system controller 7 and relay unit 16 by (YES) in the case of above
Connect, so that negative pressure pump 4 starts (step STP23).The measurement booster absolute pressure of absolute pressure transducer 11 is reused, will
The measured value D of booster absolute pressure is sent to ESP modules 8.As needed, by the measured value D of booster absolute pressure from ESP
Module 8 is sent to hybrid power system controller 7.Use at least one party in hybrid power system controller 7 and ESP modules 8
Whether the measured value D for judging booster absolute pressure is to stop below absolute pressure threshold f (step STP24).
In the case where the measured value D of booster absolute pressure is more than absolute pressure threshold f is stopped (no), by negative pressure pump 4
Maintain the state (step STP23) of startup.On the other hand, the measured value D in booster absolute pressure is stopping absolute pressure
(YES) in the case of below threshold value f, using hybrid power system controller 7 and relay unit 16 by negative pressure pump 4 and power supply 10
Electrical connection cut-out so that negative pressure pump 4 stops (step STP21).
Additionally, stopping absolute pressure threshold f more than startup absolute pressure threshold e.It is preferred that start absolute pressure threshold e being for about
More than 40kPa and about below 53kPa, it is for about more than 37kPa and about below 40kPa preferably to stop absolute pressure threshold f, but this is only
It is one.The difference of the more preferably startup and stopping absolute pressure threshold value e, f is for about more than 3kPa and about below 13kPa.
On from low land control model to highland control mode switch when Fig. 4 in, start absolute pressure threshold e
It is the booster absolute pressure when negative pressure pump 4 represented by solid line M1 in the region that height above sea level H is more than the 1st elevation threshold i1 starts
Power, and it is by bearing that double dot dash line N1 is represented in the region that height above sea level H is more than the 1st elevation threshold i1 to stop negative threshold r
Booster absolute pressure when press pump 4 stops.
On from highland control model to low land control mode switch when Fig. 5 in, start absolute pressure threshold e
It is the booster absolute pressure when negative pressure pump 4 represented by solid line M2 in regions of the height above sea level H more than the 2nd elevation threshold i2 starts
Power, and it is the negative pressure represented by double dot dash line N2 in regions of the height above sea level H more than the 2nd elevation threshold i2 to stop negative threshold r
Booster absolute pressure when pump 4 stops.
However, low land of the invention uses control model not limited to this with highland, the 2nd atmospheric pressure threshold value b2 might be less that
1st atmospheric pressure threshold value b1.In this case, can be by the case of from low land control mode switch to highland control model
Height above sea level and atmospheric pressure and the relation of booster negative pressure and booster absolute pressure be set to as shown in Fig. 5, and can
By the height above sea level in the case of from highland control mode switch to low land control model and atmospheric pressure and booster negative pressure and
The relation of booster absolute pressure is set to as shown in Fig. 4.Can be big by the 1st if these relations are represented in figure
Air pressure threshold value b1 and the 2nd atmospheric pressure threshold value b2 mutually bring expression.
[effect and effect]
In this way, the control method of the negative pressure pump 4 according to present embodiment, even atmospheric pressure is in the 1st atmospheric pressure threshold value b1
Or in the case that the 2nd elapses near atmospheric pressure threshold value b2, can also prevent low land control model and highland control model frequent
Ground switching.As a result, can stabilization, accurately and efficiently control negative pressure pump 4.
In addition, the control method of the negative pressure pump 4 according to present embodiment, by negative thus according to the control of booster absolute pressure
Press pump 4, thus particularly due to automobile be located at low atmospheric pressure highland and motor vehicle environment atmospheric pressure reduce in the case of,
Can prevent from causing the continuous running of negative pressure pump 4 due to the braking negative pressure required for cannot ensure auxiliary braking.As a result, can subtract
The number of starts of few negative pressure pump 4, and the driving time of negative pressure pump 4 can be shortened, therefore negative pressure pump 4 can be efficiently controlled, so that
Extend the life-span of negative pressure pump 4, and reduce the generation of the action sound from negative pressure pump 4.
[the 2nd implementation method]
Illustrate the control method of the negative pressure pump of the 2nd implementation method of the invention.The negative pressure pump of present embodiment can be implemented
The control system of control method is in a same manner as in the first embodiment.In the control method of the negative pressure pump of present embodiment, with
1 implementation method is same, and low land control model and highland are switched over control model.
But the low land of present embodiment is used and highland control model is used with the low land of the 1st implementation method and highland controls
Pattern is different, is that control negative pressure pump 4 makes booster negative pressure maintain in desired scope under both control models.
That is, present embodiment low land with and highland control model under, be same with control model with the low land of the 1st implementation method
Sample, calculate booster negative pressure calculates value P, and the startup for calculating value P control negative pressure pumps 4 according to booster negative pressure and stops
Only, booster negative pressure is made to maintain in desired scope.
[low land control model]
Describe this low land control model in detail.Under low land control model, hybrid power system controller 7 is being helped
Power device negative pressure calculate value P be can according to the travel speed of automobile change below startup negative threshold s in the case of make negative pressure
Pump 4 starts, and booster negative pressure calculate value P be can according to the travel speed of automobile change stopping negative threshold t with
Stop negative pressure pump 4 in the case of upper.
[startup of low land control model and the change of stopping negative threshold]
The startup of the explanation low land control model of reference picture 7 and the change of stopping negative threshold s, t.Additionally, in the figure 7,
Transverse axis represents the value W ' (km/h) of the travel speed of automobile, and the longitudinal axis in left side represents startup negative threshold s (Pa), the longitudinal axis on right side
Represent and stop negative threshold t (Pa).And, in the figure 7, the 1st~the of the change setting according to travel speed the is represented by X marks
3 start negative threshold s1, s2, s3, and the 1st~the 3rd stopping of the change setting according to travel speed is represented by spherical dot mark
Negative threshold t1, t2, t3.As shown in Figure 7, starting negative threshold s can be changed to travel speed in when starting low-speed region
The 1st startup negative threshold s1, travel speed be in the 2nd startup negative threshold s2 and travel speed when starting intermediate speed region
In the 3rd startup negative threshold s3 when starting high-speed region.Start low-speed region and be set in the value W ' of travel speed less than the 1st
Start the scope of speed threshold value x1, intermediate speed region be set in the value W ' of travel speed for the 1st start more than speed threshold value x1 and
Start the scope of speed threshold value x2 less than the 2nd, high-speed region be set in the value W ' of travel speed for the 2nd start speed threshold value x2 with
On scope.2nd starts speed threshold value x2 starts speed threshold value x1 more than the 1st.
2nd startup negative threshold s2 is set greater than the 1st startup negative threshold s1, and the 3rd startup negative threshold s3 sets
It is set to start more than the 2nd and stops negative threshold s2.1st startup negative threshold s1 is preferably from about 47kPa, and the 2nd starts negative threshold
S2 is preferably from about 60kPa, and the 3rd startup negative threshold s3 is preferably from about 67kPa, but is only for one.More preferably the 1st and the 2nd
The difference for starting negative threshold s1, s2 is for about 13kPa, and the more preferably the 2nd and the 3rd difference for starting negative threshold s2, s3 is for about 7kPa.The
1 startup speed threshold value x1 is preferably from about more than 20km/h and about below 30km/h, and the 2nd startup speed threshold value x2 is preferably from about
More than 60km/h and about below 70km/h.
On the other hand, stopping negative threshold t can be changed to travel speed in the 1st stopping negative pressure when stopping low-speed region
The 2nd stopping negative threshold t2 and travel speed that threshold value t1, travel speed are in when stopping intermediate speed region being in and stop at a high speed
The 3rd stopping negative threshold t3 during region.Stop low-speed region and be set in the value W ' of travel speed less than the 1st stopping speed threshold value
The scope of y1, intermediate speed region is set in the value W ' of travel speed for the 1st stops more than speed threshold value y1 and stops car less than the 2nd
The scope of fast threshold value y2, the value W ' that high-speed region is set in travel speed is the scope of the 2nd stopping more than speed threshold value y2.2nd
Stop speed threshold value y2 and stop speed threshold value y1 more than the 1st.
2nd stopping negative threshold t2 is set greater than the 1st stopping negative threshold t1, and the 3rd stopping negative threshold t3 sets
It is set to and stops negative threshold t2 more than the 2nd.1st stopping negative threshold t1 is preferably from about 60kPa, and the 2nd stopping negative threshold t2 is excellent
Elect about 67kPa as, the 3rd stopping negative threshold t3 is preferably from about 74kPa, but only one.More preferably the 1st and the 2nd stops bearing
The difference for pressing threshold value t1, t2 is for about 7kPa, and the more preferably the 2nd and the 3rd difference for stopping negative threshold t2, t3 is for about 7kPa.1st stops car
Fast threshold value y1 is preferably from about more than 10km/h and about below 20km/h, and the 2nd stopping speed threshold value y2 is preferably from about 40km/
More than h and about below 50km/h.
Here, illustrating to start and stop the change of negative threshold s, t using the situation that automobile in an initial condition stops
Control flow.As shown in figure 8, automobile is started running (step STP31).Travel speed is in and starts or stops low-speed region,
Negative threshold s, t are started or stoped for the 1st starts or stops negative threshold s1, t1 (step STP32).Hybrid power system is controlled
Device 7 speculates the measured value W of travel speed according to current value, magnitude of voltage of inverter (not shown) being provided at its inner portion etc., or
Person measures travel speed using vehicle speed sensor 13, and the measured value W of travel speed is sent into ESP modules 8, and as needed,
The measured value W of travel speed is sent to hybrid power system controller 7 from ESP modules 8.Use hybrid power system controller
At least one party in 7 and ESP modules 8 judges whether the measured value W of travel speed is the 1st to start or stop speed threshold value x1, y1
Above (step STP33).
In the case where the measured value W of travel speed starts or stops speed threshold value x1, y1 less than the 1st (no), traveling speed
Degree will start or stop negative threshold s, t and maintain as the 1st starts or stops negative threshold in low-speed region is started or stoped
The state (step STP32) of s1, t1.On the other hand, travel speed measured value W for the 1st start or stop speed threshold value x1,
(YES) in the case of more than y1, travel speed is in and starts or stops intermediate speed region, will start or stop negative threshold s, t from the
1 starts or stops negative threshold s1, t1 is changed to the 2nd and starts or stops negative threshold s2, t2 (step STP34).Hybrid power
System controller 7 speculates travel speed again according to current value, magnitude of voltage of inverter (not shown) being provided at its inner portion etc.
Measured value W, or using vehicle speed sensor 13 measure travel speed, the measured value W of travel speed is sent to ESP modules 8,
And as needed, the measured value W of travel speed is sent to hybrid power system controller 7 from ESP modules 8.It is dynamic using mixing
At least one party in Force system controller 7 and ESP modules 8 judges whether the measured value W of travel speed is the 1st to start or stop car
Fast threshold value x1, more than y1 (step STP35).
In the case where the measured value W of travel speed starts or stops speed threshold value x1, y1 less than the 1st (no), traveling speed
Degree will start or stop negative threshold s, t and start or stop negative threshold s2, t2 from the 2nd in low-speed region is started or stoped
It is changed to the 1st and starts or stops negative threshold s1, t1 (step STP32).On the other hand, the measured value W in travel speed is the 1st
(YES) in the case of speed threshold value x1, more than y1 is started or stoped, using in hybrid power system controller 7 and ESP modules 8
At least one party judges whether the measured value W of travel speed is the 2nd to start or stop speed threshold value x2, more than y2 (step STP36).
In the case where the measured value W of travel speed starts or stops speed threshold value x2, y2 less than the 2nd (no), traveling speed
Degree will start or stop negative threshold s, t and maintain as the 2nd starts or stops negative threshold in intermediate speed region is started or stoped
The state (step STP34) of s2, t2.On the other hand, travel speed measured value W for the 2nd start or stop speed threshold value x2,
(YES) in the case of more than y2, travel speed is in and starts or stops high-speed region, will start or stop negative threshold s, t from the
2 start or stop negative threshold s2, t2 is changed to the 3rd and starts or stops negative threshold s3, t3 (step STP37).Then, use
At least one party in hybrid power system controller 7 and ESP modules 8 judge travel speed measured value W whether be the 2nd start or
Stop speed threshold value x2, more than y2 (step STP38).
In the case where the measured value W of travel speed starts or stops speed threshold value x2, y2 less than the 2nd (no), traveling speed
Degree will start or stop negative threshold s, t and start or stop negative threshold s3, t3 from the 3rd in intermediate speed region is started or stoped
It is changed to the 2nd and starts or stops negative threshold s2, t2 (step STP34).On the other hand, the measured value W in travel speed is the 2nd
(YES) in the case of speed threshold value x2, more than y2 is started or stoped, travel speed is in and starts or stops high-speed region, will start
Or stop negative threshold s, t to maintain is the 3rd state (step STP37) for starting or stoping negative threshold s3, t3.
However, the control flow not limited to this of startup of the invention and the change for stopping negative threshold s, t, in travel speed
In when starting or stoping intermediate speed region, it is also possible to implement the steps of.Use hybrid power system controller 7 and ESP modules 8
In at least one party judge whether the measured value W of travel speed is the 2nd to start or stop speed threshold value x2, more than y2.In traveling
The measured value W of speed starts or stops (YES) in the case of speed threshold value x2, more than y2 for the 2nd, travel speed be in start or
Stop high-speed region, will start or stop negative threshold s, t from the 2nd start or stop negative threshold s2, t2 be changed to the 3rd startup
Or stop negative threshold s3, t3.On the other hand, the measured value W in travel speed started or stoped less than the 2nd speed threshold value x2,
In the case of y2 (no), the survey of travel speed is judged using at least one party in hybrid power system controller 7 and ESP modules 8
Whether value W is the 1st to start or stop speed threshold value x1, more than y1.
In the case where the measured value W of travel speed starts or stops speed threshold value x1, y1 less than the 1st (no), traveling speed
Degree will start or stop negative threshold s, t and start or stop negative threshold s2, t2 from the 2nd in low-speed region is started or stoped
It is changed to the 1st and starts or stops negative threshold s1, t1.On the other hand, the measured value W in travel speed is started or stoped for the 1st
(YES) in the case of speed threshold value x1, more than y1, travel speed is in and starts or stops high-speed region, will start or stop negative pressure
Threshold value s, t starts or stops negative threshold s2, t2 and is changed to the 3rd and starts or stops negative threshold s3, t3 from the 2nd.
[highly with control model]
Describe highland control model in detail.Under the control model of highland, hybrid power system controller 7 is in booster
Negative pressure calculate value P be can according to the measured value W of the travel speed of automobile change below startup negative threshold u in the case of make
Negative pressure pump 4 starts, and booster negative pressure calculate value P be can according to the measured value W of the travel speed of automobile change stopping
Only stop negative pressure pump 4 in the case of more than negative threshold v.
[highly with the startup and the change of stopping negative threshold of control model]
The startup of the explanation highland control model of reference picture 9 and the change of stopping negative threshold u, v.Additionally, in fig .9,
Transverse axis represents the measured value W (km/h) of the travel speed of automobile, and the longitudinal axis in left side represents startup negative threshold u (Pa), right side
The longitudinal axis represents stopping negative threshold v (Pa).And, in fig .9, the 1st of the change setting according to travel speed the is represented by X marks
Start negative threshold u1, u2 with the 2nd, and the 1st and the 2nd stopping of the change setting according to travel speed is represented by spherical dot mark
Negative threshold v1, v2.As shown in Figure 9, starting negative threshold u can be changed to the measured value W of travel speed in startup low speed
The measured value W of the 1st startup negative threshold u1 and travel speed during region is in the 2nd startup negative pressure when starting medium high speed area
Threshold value u2.Start low-speed region and be set in the value W ' of travel speed less than the scope for starting speed threshold value z, start medium high speed area
The value W ' for being set in travel speed is the scope for starting more than speed threshold value z.
2nd startup negative threshold u2 is set greater than the 1st startup negative threshold u1.1st startup negative threshold u1 is preferably
About 47kPa, the 2nd startup negative threshold u2 is preferably from about 60kPa, but is only for one.More preferably the 1st and the 2nd starts negative pressure
The difference of threshold value u1, u2 is for about 17kPa.Start speed threshold value z and be preferably from about more than 10km/h and about below 50km/h.
On the other hand, stop negative threshold v can be changed to travel speed measured value W be in when stopping low-speed region the
1 stops the measured value W of negative threshold v1 and travel speed in the 2nd stopping negative threshold v2 when stopping medium high speed area.Stop
Only low-speed region is set in the value W ' of travel speed less than the scope for stopping speed threshold value σ, stops medium high speed area setting and is expert at
The value W ' for sailing speed is the scope for stopping more than speed threshold value σ.
2nd stopping negative threshold v2 is set greater than the 1st stopping negative threshold v1.1st stopping negative threshold v1 is preferably
About 60kPa, the 2nd stopping negative threshold v2 is preferably from about 63kPa, but is only for one.More preferably the 1st and the 2nd stops negative pressure
The difference of threshold value v1, v2 is for about 3kPa.Stop speed threshold value σ and be preferably from about more than 10km/h and about below 50km/h.
Situation about being stopped using automobile in an initial condition is come the control of change that illustrates to start and stop negative threshold u, v
Flow.As shown in Figure 10, automobile is started running (step STP41).Travel speed is in and starts or stops low-speed region, start or
Stop negative threshold u, v for the 1st starts or stops negative threshold u1, v1 (step STP42).Hybrid power system controller 7
The measured value W of travel speed is speculated according to current value, magnitude of voltage of inverter (not shown) being provided at its inner portion etc., or is used
Vehicle speed sensor 13 measures travel speed, the measured value W of travel speed is sent into ESP modules 8, and as needed, will travel
The measured value W of speed is sent to hybrid power system controller 7 from ESP modules 8.Use hybrid power system controller 7 and ESP
At least one party in module 8 judges whether the measured value W of travel speed is to start or stop speed threshold value z, more than σ (steps
STP43)。
In the case where the measured value W of travel speed is less than and starts or stops speed threshold value z, σ (no), travel speed is in
Low-speed region is started or stoped, negative threshold u, v will be started or stoped and maintained as the 1st starts or stops negative threshold u1, v1
State (step STP42).On the other hand, the measured value W in travel speed is the feelings for starting or stoping speed threshold value z, more than σ
(YES) under condition, travel speed be in start or stop medium high speed area, will start or stop negative threshold u, v from the 1st start or
Stopping negative threshold u1, v1 are changed to the 2nd and start or stop negative threshold u2, v2 (step STP44).Hybrid power system is controlled
Device 7 speculates the measured value of travel speed again according to current value, magnitude of voltage of inverter (not shown) being provided at its inner portion etc.
W, or travel speed is measured using vehicle speed sensor 13, the measured value W of travel speed is sent to ESP modules 8, and according to need
Will, the measured value W of travel speed is sent to hybrid power system controller 7 from ESP modules 8.Use hybrid power system control
At least one party in device processed 7 and ESP modules 8 judge travel speed measured value W whether be start or stop speed threshold value z, σ with
Upper (step STP45).
In the case where the measured value W of travel speed is less than and starts or stops speed threshold value z, σ (no), travel speed is in
Low-speed region is started or stoped, negative threshold u, v will be started or stoped is started or stoped negative threshold u2, v2 from the 2nd and be changed to
1st starts or stops negative threshold u1, v1 (step STP42).On the other hand, the measured value W in travel speed is to start or stop
Only (YES) in the case of speed threshold value z, more than σ, travel speed is in and starts or stops medium high speed area, negative by starting or stoping
It is the 2nd state (step STP44) for starting or stoping negative threshold u2, v2 that pressure threshold value u, v is maintained.
[relation of the low land with highland control model]
Reference picture 7 and Fig. 9 relations of the explanation low land with highland control model.1st startup of low land control model
Negative threshold s1 is substantially equal with the 1st startup negative threshold u1 of highland control model.Open the 2nd of low land control model
Dynamic negative threshold s2 is the 2nd startup more than negative threshold u2 of highland control model.3rd startup of low land control model is negative
2nd startup negative threshold u2s of the pressure threshold value s3 more than highland control model.
1st stopping negative threshold t1 of low land control model stops negative threshold v1 with the 1st of highland control model the
It is substantially equal.2nd stopping negative threshold t2 of low land control model is the 2nd stopping negative threshold of highland control model
More than v2.2nd stopping negative thresholds of the 3rd stopping negative threshold t3 of low land control model more than highland control model
v2。
[effect and effect]
In this way, the control method of the negative pressure pump 4 according to present embodiment, even atmospheric pressure is in the 1st or the 2nd atmospheric pressure threshold
In the case of being elapsed near value b1, b2, can also prevent low land control model and highland control model from continually switching.Its knot
It is really, can stabilization, accurately and efficiently control negative pressure pump 4.
In addition, the control method of the negative pressure pump 4 according to present embodiment, by the change of the travel speed thus according to automobile
To change booster negative pressure, therefore change due to travel speed can be prevented and booster negative pressure reduces, can prevented due to can not
Booster negative pressure required for ensuring auxiliary braking and cause the continuous running of negative pressure pump 4.As a result, negative pressure pump 4 can be reduced
The number of starts, and the driving time of negative pressure pump 4 can be shortened, therefore negative pressure pump 4 can be efficiently controlled, so as to extend negative pressure pump 4
Life-span, and reduce the action sound from negative pressure pump 4 generation.
So far embodiments of the present invention are illustrated, but the invention is not restricted to above-mentioned implementation method, the present invention can basis
Its technological thought is deformed and is changed.
Claims (6)
1. a kind of control method of automobile negative pressure pump,
Its control makes to produce the negative pressure pump of negative pressure in the vacuum booster of automobile, and the control method is included：To low land control mould
The mode handoff procedures that formula and highland control model are switched over, above-mentioned low land control model refers to be located in above-mentioned automobile
The control model of above-mentioned negative pressure pump is controlled during low land, above-mentioned highland control model refers to high positioned at height above sea level in above-mentioned automobile
Using the control model that above-mentioned negative pressure pump is controlled from above-mentioned low land with the different method of control model when the highland of low land height,
The control method of above-mentioned automobile negative pressure pump is characterised by,
In above-mentioned mode handoff procedures, the 1st atmospheric pressure threshold value and the 2nd atmospheric pressure threshold value are set to different value, above-mentioned 1st air
The value of atmospheric pressure when pressure threshold value is from above-mentioned low land control mode switch to above-mentioned highland control model, the above-mentioned 2nd is big
The value of atmospheric pressure when air pressure threshold value is from above-mentioned highland control mode switch to above-mentioned low land control model.
2. the control method of automobile negative pressure pump according to claim 1,
Above-mentioned 2nd atmospheric pressure threshold value is more than above-mentioned 1st atmospheric pressure threshold value.
3. the control method of automobile negative pressure pump according to claim 1 and 2,
Under above-mentioned low land control model, above-mentioned negative pressure pump is controlled to maintain the negative pressure in above-mentioned vacuum booster desired
In the range of, and
Under above-mentioned highland control model, above-mentioned negative pressure pump is controlled the absolute pressure in above-mentioned vacuum booster is maintained institute
In desired scope.
4. the control method of automobile negative pressure pump according to claim 1 and 2,
Step also is changed comprising threshold value, in above-mentioned threshold value change step, the travel speed according to above-mentioned automobile changes low land and uses
Negative threshold and highland negative threshold, above-mentioned low land negative threshold and above-mentioned highland negative threshold are respectively set as upper
State the value of negative pressure when starting or stoping above-mentioned negative pressure pump under low land control model and above-mentioned highland control model.
5. the control method of automobile negative pressure pump according to claim 4,
In above-mentioned threshold value change step,
Above-mentioned low land negative threshold can be changed to the 1st low land negative threshold, the 2nd low land negative threshold and the 3rd
Low land negative threshold, above-mentioned 1st low land negative threshold be above-mentioned travel speed be in low land low-speed region when low land
With negative threshold, above-mentioned 2nd low land negative threshold is above-mentioned travel speed bigger than above-mentioned low land low-speed region in speed
Low land intermediate speed region when low land negative threshold, be set greater than above-mentioned 1st low land negative threshold, the above-mentioned 3rd is low
Ground negative threshold is when above-mentioned travel speed is in the speed low land high-speed region bigger than above-mentioned low land intermediate speed region
Low land negative threshold, is set greater than above-mentioned 2nd low land negative threshold, and
Above-mentioned highland negative threshold can be changed to the 1st highland negative threshold and the 2nd highland negative threshold, above-mentioned
1 highland negative threshold be above-mentioned travel speed be in highland low-speed region when highland negative threshold, it is above-mentioned 2nd highly
It is that highland when above-mentioned travel speed is in the speed medium high speed area bigger than above-mentioned highland low-speed region is used with negative threshold
Negative threshold, is set greater than above-mentioned 1st highland negative threshold.
6. the control method of automobile negative pressure pump according to claim 5,
Make above-mentioned 1st low land negative threshold equal with above-mentioned 1st highland negative threshold,
Make above-mentioned 2nd low land negative threshold for more than above-mentioned 2nd highland negative threshold,
Above-mentioned 3rd low land negative threshold is set to be more than above-mentioned 2nd highland negative threshold.
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| JP2015227609A JP6604508B2 (en) | 2015-11-20 | 2015-11-20 | Control method of automotive negative pressure pump |
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| CN108211075A (en) * | 2017-12-15 | 2018-06-29 | 湖南明康中锦医疗科技发展有限公司 | The method for stabilizing voltage of lung ventilator wind turbine |
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| CN111301383B (en) * | 2019-11-05 | 2021-05-28 | 浙江零跑科技有限公司 | Plateau-adaptive new energy vehicle vacuum pump control method |
| CN111252051A (en) * | 2019-11-27 | 2020-06-09 | 浙江零跑科技有限公司 | Control method for electric vacuum pump of new energy automobile |
| KR102295767B1 (en) * | 2019-12-11 | 2021-08-31 | 주식회사 한중엔시에스 | Control methods for the vacuum level of the booster according to the height |
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| US20150037172A1 (en) * | 2011-07-01 | 2015-02-05 | Jaguar Land Rover Limited | Method of controlling vacuum pump for vehicle brake booster |
| CN103723137A (en) * | 2013-12-30 | 2014-04-16 | 重庆长安铃木汽车有限公司 | Brake assisting power control method for electric vehicle |
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Also Published As
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| JP2017094843A (en) | 2017-06-01 |
| JP6604508B2 (en) | 2019-11-13 |
| CN106740789B (en) | 2019-07-12 |
| DE102016120783A1 (en) | 2017-05-24 |
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