CN105905089A - A method for preventing malfunctioning of a combined valve and aspirator assembly - Google Patents
A method for preventing malfunctioning of a combined valve and aspirator assembly Download PDFInfo
- Publication number
- CN105905089A CN105905089A CN201610088047.7A CN201610088047A CN105905089A CN 105905089 A CN105905089 A CN 105905089A CN 201610088047 A CN201610088047 A CN 201610088047A CN 105905089 A CN105905089 A CN 105905089A
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- China
- Prior art keywords
- valve
- getter
- motor vehicles
- electromotor
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- B60T13/57—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
-
- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/36—Other control devices or valves characterised by definite functions
-
- 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
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
-
- 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
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Malfunctioning of a combined valve and aspirator assembly 10 is prevented by opening an aspirator valve 11 forming part of the combined valve and aspirator assembly 10 when an engine 6 of a motor vehicle 1 is to be shut-down. Opening the valve 11 when the engine 6 is off allows fluid to drain and prevents risk of the valve sticking in the closed position due to icing up of the valve 11 in cold ambient conditions. In some embodiments the valve 11 is only opened for a predefined period of time following the shutdown of the engine 6 in order to prevent unnecessary power usage if the engine is off for an extended period of time. Opening of the valve may be dependent on the temperature. Additionally, heat may be provided to the valve when a key-on event occurs, i.e. the engine is started.
Description
The present invention relates to combination valve and the getter of a kind of part forming vacuum boosting braking system
Assembly, and relate more specifically to a kind of for preventing combination valve and getter assembly from sending out because valve freezes
The method of raw fault.
It is known that motor vehicles are provided with vacuum assist brake system, brake in this brakes
Booster/servo vacuum device is used for amplifying the power from motor vehicle operator and inputs.
Some vacuum assist brake system use the vacuum in motor intake manifold to come for brake boost
Device provides vacuum source.Such setting is disadvantageous, and the vacuum in motor intake manifold is being started
Machine changes quite big and is present in when there is very little or none vacuum in inlet manifold during using.
In order to overcome this problem, it has been already proposed to use getter, this getter is connected to lead to electromotor
Influent stream passage, thus when inlet manifold exists the least for the vacuum of brake booster time increase
Add the vacuum available amount for brake booster.
In order to make the minimum interference of getter and engine throttle gate control, usually introduce this conduct
The getter (aspirator valve) of a kind of valve flows through getter controlling air.Aspirator valve is conventional
Operation flows through getter for allowing when it is opened or prevents air from flowing through when it is closed
Getter.This valve with getter arranges so-called combination valve and getter assembly.
This combination valve and getter assembly have a problem that when ambient temperature is the lowest, such as, exist
Below zero degrees celsius, any moisture being retained in after tail-off in getter can tend to freezing
Knot.This icing can produce combination between the valve element of getter body part and aspirator valve, by
Valve element is maintained in its closed position and when engine restarting as needed sucking-off under normal conditions by this
Device valve causes aspirator valve to break down when opening.
It is an object of the present invention to prevent combination valve and getter assembly from breaking down due to icing.
According to the first aspect of the invention, provide a kind of for preventing the motor vehicles with electromotor here
Combination valve and the method that breaks down due to the icing of valve of getter assembly, wherein this valve is formed
Combination valve and a part for getter assembly, wherein the method comprises to become getter relative to horizontal line
Angle ground is installed to improve the liquid discharge from getter, and is showing starting of motor vehicles
Machine will pent ignition switch turn off event time, open valve to allow that liquid is arranged from getter
Go out.
Valve can be normally close valve, and this normally close valve is pushed into open position and the party by the action of actuator
Method is further contained in activation actuator when occurring ignition switch to turn off event.
The method can comprise the situation being only less than the first predetermined temperature threshold in ambient temperature further
Under open this valve.
The method comprises further when occurring ignition switch to turn off event, this valve is opened continue one pre-
The fixed time period, to allow that liquid is discharged from getter and closedown should when this time period expires afterwards
Valve.
Alternatively, this valve can be normally open valve, and this normally open valve is pushed into closedown by the action of actuator
Position and the method can disable actuator further contained in there is ignition switch when turning off event.
The method can be further contained in hot to getter applying during generation key-on event.
The method can comprise the situation being only less than the second predetermined temperature threshold in ambient temperature further
Under to getter apply heat.
The method can be further contained in valve element to this valve when there is key-on event
Apply heat.
The method can comprise the situation being only less than the second predetermined temperature threshold in ambient temperature further
Under to this valve element apply heat.
According to the second aspect of the invention, one is provided to have electromotor, for opening and closing here
The man machine interface of electromotor and the motor vehicles of vacuum boosting braking system, this vacuum assisted brake system
System includes that combination valve and getter assembly and the valve for control combination valve and getter assembly are opened
With the controller closed, wherein getter is angularly installed relative to horizontal line to improve liquid from suction
Discharge in gas device, and controller can be used to open valve to allow the liquid behaviour in man machine interface
Make to show to discharge from getter when the electromotor of motor vehicles will be closed.
This valve can comprise valve element and make valve element move between open and closed positions
Actuator, and this valve element can be positioned at closed position and pass through actuator when actuator is deactivated
Activation and be pushed into open position, and controller can be used to starting at motor vehicles
Actuator is activated when machine is closed.
This valve can only be opened in the case of ambient temperature is less than the first predetermined threshold.
When the electromotor of motor vehicles is closed, controller can be used to open valve and continue
A predetermined time section is to allow liquid and discharge from getter and to expire in predetermined time period afterwards
After can be further operable for closing this valve.
This valve can alternatively comprise valve element and make valve element at open position and close stance
The actuator of movement between putting, and valve element is positioned at open position and passes through when actuator is deactivated
The activation of actuator is pushed into closed position, and controller can be used to starting at motor vehicles
Actuator is disabled when machine is closed.
Getter can include heater and controller can be used at electromotor being opened
Use heater that getter is applied heat time dynamic.
The heater of this valve element can be arranged for the valve element of valve, and controller can be grasped
Act on, at electromotor, the heater using valve element when being activated is applied heat to valve element.
The most with reference to the accompanying drawings to describe the present invention, in accompanying drawing:
Fig. 1 be according to the first aspect of the invention for prevent combination valve and getter assembly due to knot
Ice and the high level flow chart of the first embodiment of method that breaks down；
Fig. 2 be according to the first aspect of the invention for prevent combination valve and getter assembly due to knot
Ice and the high level flow chart of the second embodiment of method that breaks down；
Fig. 3 is the combination valve through vacuum boosting braking system according to the second aspect of the invention and suction
The sectional view of gas device assembly, this vacuum boosting braking system correspondingly forms a part for motor vehicles；
And
Fig. 4 is the schematic diagram of motor vehicles according to the second aspect of the invention.
With reference first to Fig. 1, the method starts from frame 110, and it represents key-on event.?
In older motor vehicles, affected circuit and the motor vehicles of motor vehicles by key operated switch
Engine start, this key operated switch be commonly referred to as " ignition switch ".This switch is mobile
It is commonly referred to as " ignition switch " event to " unlatching " position and this title is used for showing
Creating identical effect, in open position, all main circuits of motor vehicles are activated and motor-driven
The electromotor of vehicle has been started up.
Similarly, such switch moves to " closedown " position and is commonly referred to as " ignition switch shutoff "
Event and this title are for showing to have produced identical effect, in closed position, and the institute of motor vehicles
Main circuit is had to be deactivated and the engine stop of motor vehicles.
It will be clear that in many modern motor, key switch is not intended to realize " point
Fire switch connection " and " ignition switch shutoff " event but the man machine interface of multi-form (HMI).
The present invention is not limited to any certain types of HMI and can use and be capable of motor vehicles master
Circuit is wanted to open the most electric with engine start (" ignition switch " event) and motor vehicles
Road is closed and any kind of HMI of engine stop (" ignition switch shutoff " event).
Referring back to frame 110, when electromotor has been started up, the method moves to frame 120 from frame 110,
In block 120, aspirator valve is controlled to provide the vacuum needed for brake booster.It is to say,
In general, if the vacuum available directly from electromotor is high, then aspirator valve will be closed,
And if on the contrary, directly from true less than needed for brake booster of the vacuum available of electromotor
Empty, then to open aspirator valve.
From frame 120, the method enters into whether frame 130 there occurs show starting of motor vehicles to verify
" ignition switch shutoff " event that machine will stop.Without " ignition switch shutoff " thing occurs
Part, then during the method returns to frame 120 and continue executing with frame 120 and 130 until occur " igniting is opened
Turn off " event.It is to say, when the engine is operating, air-breathing is controlled in a conventional manner
The vacuum needed for brake booster offer thought by device valve.
If but when verifying in frame 130, there occurs that ignition switch turns off event, then the method would be from frame
130 enter into frame 140, open aspirator valve in a block 140.Owing to getter is positioned at electromotor
In cabin at electromotor, ambient temperature residing when running regardless of motor vehicles, getter
Temperature is always apparently higher than zero degrees celsius, therefore when electromotor occurs to cut out, in getter
Any traps moisture is always in liquid.
In the long-time down periods, along with combination valve and getter assembly cool down, the temperature in enging cabin
Degree can decline until it is finally reached the temperature being substantially the same with the ambient air temperature residing for motor vehicles
Degree.Therefore, if ambient temperature is far below the freezing point of the moisture being positioned at getter, then can exist
Ice is formed in getter.But owing to when tail-off, getter is opened, in an open position
Time aspirator valve do not contact with getter body, therefore in getter formed any ice will not make suction
Gas device valve clings getter body.
It can thus be avoided combination valve and getter assembly break down and electromotor one is restarted, air-breathing
Device valve just can normally work.
Referring back to frame 140, the method enters into frame 150 to have verified electromotor the most from frame 140
Through restarting, say, that have occurred and that key-on event.Connect without there is ignition switch
Interpreter's part, then the method would circulate through frame 140 and 150 and aspirator valve will stay in that and open.
If making aspirator valve device of movement between its open position and closed position by being used for
Such as actuator is arranged so that, when aspirator valve does not input, aspirator valve remains
Opening and in order to close aspirator valve, actuator must apply power to it, then such embodiment is
Especially advantageous.Such aspirator valve is referred to as " normally open valve ".
Owing to need not be remained by aspirator valve the power opened or energy when tail-off, because of
This such valve is favourable.Spring is generally used to be biased by valve in the case of " normally open valve "
For opening and use the action that actuator provides power to cut out for valve with opposing spring.
Another type of valve is known " normally close valve ", and in " normally close valve ", actuator is necessary for inhaling
Gas device valve provide power so that it is opened and when aspirator valve does not exist the input from actuator, air-breathing
Device valve will cut out by spring.It is to be appreciated that utilize this " normally close valve " to need energy to incite somebody to action
Valve remains to be opened.
Therefore, if the valve of method as shown in Figure 1 and Closed type is used together, the most desirably
When valve opened by needs, it is provided that breech lock is opened to be remained by valve, thus there is the wind occurring to freeze
During danger, it is to avoid valve is remained and drives the demand opened.
Referring now to Fig. 2, it is shown that be used for preventing combination valve and getter assembly from occurring due to icing
Second embodiment of the method for fault, the valve of the especially suitable Closed type of the method.Term " open by igniting
Close connect " and " ignition switch shutoff " have the meaning as hereinbefore and can use any properly
The HMI of type.
The method starts from frame 210, and it represents verifies to check whether to there occurs that " ignition switch connects
Logical " event.Without " ignition switch " event of generation, then motor vehicles are in cut out shape
State and the method are actually maintained in frame 210 as shown in return to the "No" arrow of frame 210 from frame 210.
If but there is, when verifying in block 210, the " ignition switch showing that electromotor has been started up
Connect " event, then the method moves on to frame 220 from frame 210.In frame 220, aspirator valve quilt
Control for providing the vacuum needed for brake booster.It is to say, in general, if directly come
It is high from the vacuum available of electromotor, then if aspirator valve and on the contrary, directly will be closed
Vacuum available from electromotor is less than the vacuum needed for brake booster, then open aspirator valve.
The method from frame 220 enter into frame 230 with verify whether there occurs show motor vehicles send out
" ignition switch shutoff " event that motivation will stop.Without " ignition switch shutoff " occurs
Event, then during the method returns to frame 220 and frame 220 and 230 will be continued executing with until occur " point
Fire switch OFF " event.It is to say, when the engine is operating, control in a conventional manner
Aspirator valve thinks the vacuum needed for brake booster offer.
If but there occurs " ignition switch shutoff " event when verifying in frame 230, then the method
Enter into frame 240 from frame 230, verify whether current environmental temperature (T) makes a reservation for less than first at frame 240
Temperature threshold (TThe limit).By valve the first predetermined temperature threshold (TThe limit) be disposed proximate to getter in any water
Divide expection that the temperature of solidification occurs.It is thus possible, for instance but unrestricted, the T of valveThe limitCan fall one to ten
In the range of degree Celsius.This temperature threshold is set not send out in the case of using " normally close valve "
Stop aspirator valve to remain during raw risk of icing to open.
Referring back to frame 240, if current environmental temperature T is higher than pre-constant temperature when verifying in frame 240
Degree threshold value TThe limit, then the method enters frame 245 from frame 240, and at frame 245, aspirator valve is closed
And return to afterwards in frame 210 to wait that next " ignition switch " event occurs.
If but current environmental temperature T is less than predetermined temperature threshold T when verifying in frame 240The limit, then
The method enters frame 250 from frame 240.
In frame 250, aspirator valve is opened and starts timer.Timer is configured such that to be counted
Time device when expiring, any ice that may be formed in getter will be complete icing.It is to say,
At the terminal of the time period set by timer, the temperature of getter may be substantially equivalent to motor vehicles institute
The air ambient temperature at place.
Any ice being once likely to be formed in getter is complete icing, then just can close air-breathing
Device valve and being only located at if off aspirator valve afterwards formed any on ice rather than logical
Cross ice and cling getter body.
Referring back to frame 250, the method enters into frame 260 to verify whether timer has expired or the phase
Full, and if timer not expired, then the frame 265 that it stays open by making aspirator valve returns
To frame 260.
If but timer expiration or expired when verifying in frame 260, then the method enters into frame
270, in frame 270, close aspirator valve and return to frame 210 afterwards to wait next one igniting
Switch connection event occurs.
With as before, owing to the temperature of getter is always considerably higher than zero degrees celsius, therefore sending out
There is the moment closed in motivation, aspirator valve is opened, and any traps moisture in getter is always
It is in liquid, and therefore aspirator valve will not cling the main body of getter.
It is allowed in not by making aspirator valve remain to open in a period of time after the engine is shut off
In getter, ice is formed in the case of producing the bridge between aspirator valve and getter body.Cause
This, aspirator valve will not cling getter body and cause fault when electromotor is finally restarted.
It can thus be avoided combination valve and getter assembly break down and electromotor one is restarted, air-breathing
Device valve just can normally work.
It is to be appreciated that not necessarily use the temperature in frame 240 to verify, and in this case,
The method directly can enter into frame 250 from frame 230 and continue as described above afterwards.
Referring now to Fig. 3 and 4, it is shown that have the motor-driven of electromotor 6 and vacuum assist brake system
Vehicle 1.
As indicated by arrow " A ", surrounding air is admitted to the air inlet system of electromotor 6 by air inlet 2
System 3.Air inlet 2 can include the sky removed from the air entering gas handling system 3 by particle matter
Air cleaner.
Gas handling system 3 comprises the Part I 3u being positioned at throttler valve 4 upstream and is positioned at throttler valve 4
The Part II 3d in downstream.
Combination valve and getter assembly 10 comprise aspirator valve 11 and getter 12.
Getter 12 has and is positioned at throttler valve 4 by what first passage 7 was connected to gas handling system 3
The inlet end 12i of the Part I 3u of upstream position and be connected to gas handling system 3 by second channel 8
Be positioned at throttler valve 4 downstream and be positioned at the Part II of inlet manifold 5 upstream position of electromotor 6
The outlet side 12o of 3d.
Getter 12 has and is connected to vacuum brake assistor 15 low-pressure side by the first check valve 13
The vacuum inlet 12s of 15LP.Vacuum brake assistor 15 also includes brake booster 15 low pressure
Side 15LP and high-pressure side 15HP separate barrier film 15d.As shown in arrow " a ", the sky of atmospheric pressure
Gas is introduced into the high-pressure side 15HP of brake booster 15.
When brake pedal is depressed by the driver of motor vehicles 1, help to braking brake pedal 16
Power device 15 provides machinery input.When brake pedal 16 is depressed, be in the hydraulic fluid of pressure from
The master cylinder (not shown) forming brake booster 15 part is supplied to multiple caliper 18 with reality
The braking of existing vehicle 1.
By-pass line 9 is walked around the first check valve 13 and includes the second check valve 14.Check-valves 13,14
Vacuum is prevented when the pressure of brake booster 15 low-pressure side 15LP is less than the pressure in inlet manifold 5
Suck back from inlet manifold 5.It is to say, when the vacuum of low-pressure side 15LP is more than in inlet manifold 5
Vacuum time, be prevented from from the flowing of inlet manifold 5 to low-pressure side 15LP.
By-pass line 9 is connected at one end to the position between the first check valve 13 and low-pressure side 15LP
Put and be connected in opposite end the position between throttler valve 4 and inlet manifold 5 of gas handling system 3
Part II 3d.
The opening and closing of aspirator valve 11 are controlled by controller 20.Controller 20 can be as
The individual unit of the control module of power drive system can be maybe that combination operation is to realize aspirator valve
Two or more interconnecting units of the control of 11.
In the case of this example, controller 20 receives input, pressure sensing from pressure transducer 17
Device 17 is present in the vacuum size of brake booster 15 low-pressure side 15LP for sensing.At electromotor
6 properly functioning periods, the opening and closing of aspirator valve 11 are at least partially based on passes through pressure transducer
The 17 pressure sizes being present in brake booster 15 low-pressure side 15LP sensed.It is apparent that
It is that, in other examples, the vacuum being present in brake booster 15 low-pressure side 15LP can be modeled
And and non-immediate sensing.
Controller 20 can directly control aspirator valve 11 or can be to single unit (not shown)
There is provided signal to control for controlling the medium that aspirator valve 11 opens and closes.Such as and be not limited to,
Controller 20 can control for control lead to the air pressure of aspirator valve 11 or the valve of hydraulic flow or to
Electric supply or electronic power amplifier provide control signal.
Man machine interface 19 is set for making the main circuit of motor vehicles 1 be converted to " unlatching " and turn
It is changed to " closedown " and controls startup and the stopping of electromotor 6.
Specifically referring to Fig. 3, combination valve comprises with getter assembly 10 and connects together to form combination valve
Aspirator valve 11 and getter 12 with getter assembly 10.
Aspirator valve 11 comprises main body 11b, is mounted with for moving needle-valve 11P shape in main body 11b
The actuator 11a of the valve element of formula.It is to be understood that the subject area the present invention is not limited to use the air-breathing of needle-valve
Device valve.In the case of this example, aspirator valve 11 be normally close valve and by air inlet 11c by
Pneumatic pressure should be used for opening.It will be clear that the present invention is not limited to use normally closed aspirator valve
Or the actuator for aspirator valve 11 type.Such as, actuator can be such as electromagnetic valve or hydraulic pressure
The electric actuator of actuator.
Getter 12 has main body 12b limiting Venturi tube 12v, and in use air is with arrow " f "
This Venturi tube is flow through in shown direction.Venturi tube 12v is horizontally disposed with the longitudinal axis illustrated along Fig. 3
X-x extends.If it is to be appreciated that longitudinal axis x-x is to tilt relative to horizontal line, that
After " ignition switch shutoff " event of generation, this contributes to the moisture Wen from getter 12
Pipe 12v discharges.
Hole 12a in getter body 12b provides between Venturi tube 12v and vacuum inlet 12s
Connection.
Getter 12 is conventional structure and operation.Flowed by the air of Venturi tube 12v and make diameter
Pressure in Minimum Area declines, from there through the first check valve 13 from brake booster 15 low-pressure side
Air is siphoned away and enters getter 12 by vacuum inlet 12s, as by arrow " s " by 15LP
Shown in.Air is inhaled into Venturi tube 12v by hole 12a afterwards.
During the normal operating of electromotor 6, controller 20 controls aspirator valve 11 so that needle-valve 11p
The aspirator valve that is referred to as shown in that engage with the hole 12a in getter 12 main body 12b from it, Fig. 2 " closes
Close " position of position moves to needle-valve 11p and do not hinders air to flow through hole 12a to enter Venturi tube
12v, it is referred to as aspirator valve and " opens " position of position.As is well known in the art, overall and
Speech, true less than needed for brake booster 15 low-pressure side 15LP of the vacuum size in inlet manifold 5
During empty size, aspirator valve 11 is moved to open position and the vacuum size pair in inlet manifold 5
Closed position is moved to time for brake booster 15 low-pressure side 15LP enough.
When aspirator valve 11 is opened, the air of about the 40% of entrance inlet manifold 5 passes through getter
12 and the opening and closing of aspirator valve 11 that therefore controlled by controller 20 must be managed with
Prevent it from such as negatively affecting engine air throttle by producing the generation increase of unwanted moment of torsion
Control.It is to be understood that the subject area in other examples, the air capacity flowing through getter can be more or less than
The 40% of the air of entrance inlet manifold 5.
During the normal operation of electromotor 6, therefore the operating of combination valve and getter assembly 10 is abided by
Follow the practice of routine.
But when electromotor 6 motor vehicles 1 just in low-down ambient temperature operation consequently, it is possible to
When will be closed when the Venturi tube 12v of getter 12 forms icing, controller 20 quilt
Be programmed for opening aspirator valve 11 with prevent between aspirator valve 11 and getter body 12b around
Needle-valve 11p forms ice, and in this position, it may collect in Venturi tube 12v.Beating at aspirator valve
Open position, owing to the end of needle-valve 11p separates with the hole 12a in getter body 12b, therefore pin
It is not in contact with between end and the getter body 12b of valve 11p.
Therefore, when electromotor 6 is restarted, do not exist and make due to icing needle-valve 11p cling or combine
The risk that the aspirator valve 11 of getter body 12b breaks down.Due to generally at engine start
Need after (" ignition switch " event) to supplement very in brake booster 15 low-pressure side 15LP
Sky, and the vacuum available size of electromotor 6 is insufficient for this demand, therefore this is important.Cause
This, after electromotor 6 just starts, it usually needs open aspirator valve 11.If but needle-valve
11p clings getter body 12b in make position due to icing, then it can not be opened and
Therefore aspirator valve 11 can break down.This aspirator valve breaks down and driver can be caused to send out
Experience heavy in the case of shortly needing after raw " ignition switch " event to apply braking
Brake pedal.
In the case of using normally closed aspirator valve, controller 20 could be arranged to only starting office
Close and keep aspirator valve 11 to open and continue for some time afterwards.It is to say, in generation, " igniting is opened
Turn off " after event, keep aspirator valve 11 to open enough a period of times so that guarantee can
Any ice that can be formed in the Venturi tube 12v of getter 12 has frozen.Therefore, when after close
When closing needle-valve 11p, it can be only located on ice without making it cling getter 12 in embedding ice
Main body 12b.
By using such time delay, and make the valve can in the whole time period of tail-off
Be several week time period in remain the situation opened and compare, this can reduce and is consumed
Quantity of power.
Furthermore, it is possible to be only the of a sufficiently low situation that can reasonably expect that and icing occurs in ambient temperature
Under allow that aspirator valve 11 is opened.Such as, if ambient temperature is taken the photograph less than five when electromotor 6 cuts out
Family name's degree, then there is the risk occurring to freeze.Therefore, when " ignition switch shutoff " event of generation
Whenever ambient temperature is below about 10 degrees Celsius, open aspirator valve 11 by controller 20, if but
Temperature is higher than 10 degrees Celsius, then owing to only existing the low risk occurring to freeze, be therefore not switched on inhaling
Gas device valve 11.Again, by using such temperature extremes, the feelings when icing can not occur
Shape reduces and unnecessarily uses power that aspirator valve 11 remains the risk opened.
Although not shown in Fig. 3 and Fig. 4, but heater can be combined as combination valve and getter
A part for assembly 10.
Heater can comprise the positive temperature being attached to getter body 12b with heated getter device main body 12b
Spend coefficient unit and/or be attached to a part for aspirator valve 11 or adding of being formed as one part
Hot device element, such as the quilt in being formed at a part of needle-valve 11p or as a part of needle-valve 11p
Including resistance-type or positive temperature device.
The use of heater is particularly suited for low-down temperature, such as at subzero less than 10 DEG C,
In this case, if even after electromotor has been started up, aspirator valve remains closedown, by
Make getter warm in requiring time for, therefore there is also the risk of icing.Occur in this case
Time " key-on event " heater and remain at unlatching until risk of icing
Reduce.
Heater is the most only when ambient temperature is less than the second predetermined temperature threshold such as subzero 10 DEG C
Open, have been started up there is the risk that getter freezes afterwards at this warm engine.
Second predetermined temperature threshold ratio is used to determine whether to open the first predetermined temperature threshold of aspirator valve
It is worth lower.
Skilled artisan will appreciate that is, although the present invention is with reference to one or more embodiments
The mode of example is described, but it is not limited to the disclosed embodiments and without departing from appended power
Profit can construct alternative embodiment in the case of requiring the scope of the invention limited.
Claims (18)
1. one kind for the combination valve that prevents from there are the motor vehicles of electromotor and getter assembly due to
The method that valve freezes and breaks down, wherein said valve forms described combination valve and the one of getter assembly
Part, wherein said method comprises angularly installs described getter relative to horizontal line to improve
Liquid discharging and inciting somebody to action at the described electromotor showing described motor vehicles from described getter
When wanting pent ignition switch to turn off event, open described valve to allow that liquid is from described getter
Discharge.
Method the most according to claim 1, wherein said valve is normally close valve, and described normally close valve leads to
The action crossing actuator is pushed into open position and the method further contained in occurring ignition switch to close
Described actuator is activated during disconnected event.
Method the most according to claim 2, wherein said method comprises further only in environment temperature
Degree opens described valve less than in the case of the first predetermined temperature threshold.
4., according to the method described in any one of claim 1-3, wherein said method comprises further and works as
When occurring ignition switch to turn off event, described valve is opened lasting a predetermined time section, to allow liquid
Body is discharged from described getter and closes described valve afterwards when the described time period expires.
Method the most according to claim 1, wherein said valve is normally open valve, and described normally open valve leads to
The action crossing actuator is pushed into closed position and described method further contained in ignition switch occurs
Described actuator is disabled during shutoff event.
6. according to the method described in any one of claim 1-5, wherein said method further contained in
Occur, during key-on event, described getter is applied heat.
Method the most according to claim 6, wherein said method comprises further only at described ring
Border temperature applies heat less than in the case of the second predetermined temperature threshold to described getter.
8. according to the method described in any one of claim 1-7, wherein said method further contained in
During generation key-on event, the valve element to described valve applies heat.
Method the most according to claim 8, wherein said method comprises further only at described ring
Border temperature applies heat less than in the case of the second predetermined temperature threshold to described valve element.
10. one kind has electromotor, for opening and closing the man machine interface of described electromotor and true
The motor vehicles of empty energy assisted braking system, described vacuum boosting braking system includes combination valve and getter
Assembly and for control described combination valve and getter assembly valve open and close controller, its
Described in getter angularly install to improve liquid from described getter relative to horizontal line
Discharge and described controller can be used to open described valve to allow that liquid is in described man machine interface
Operation show when the described electromotor of described motor vehicles will be closed to discharge from described getter.
11. motor vehicles according to claim 10, wherein said valve comprises valve element and makes institute
State the actuator that valve element moves between open and closed positions, and described valve element is in institute
State and be positioned at described closed position when actuator is deactivated and be pushed into by the activation of described actuator
Described open position, and described controller can be used to the described electromotor at described motor vehicles
Described actuator will be activated when will be closed.
12. motor vehicles according to claim 11, wherein said valve is only less than in ambient temperature
It is opened in the case of first predetermined threshold.
13. according to the motor vehicles described in any one of claim 10-12, wherein when described motor vehicles
Described electromotor when will be closed, described controller can be used to open described valve and continues
A predetermined time section with allow liquid and discharge in described getter and afterwards described predetermined time
Between section expire after can be used to further close described valve.
14. motor vehicles according to claim 10, wherein said valve comprises valve element and makes
The actuator that described valve element moves between open and closed positions, and described valve element exists
Described actuator is positioned at described open position when being deactivated and the activation by described actuator is pushed into
Described closed position, and described controller can be used to the described electromotor at described motor vehicles
Described actuator will be disabled when will be closed.
15. according to the motor vehicles described in any one of claim 10-14, wherein said getter bag
Include heater and described controller can be used to use when described electromotor will be activated described
Heater applies heat to described getter.
16. according to the motor vehicles described in claim 11 or 14, the heating of wherein said valve element
Device is arranged for the described valve element of described valve, and described controller can be used at described
The heater using described valve element when being activated is applied heat to described valve element by motivation.
17. 1 kinds the most as described in the present invention for the motor vehicles preventing from having electromotor
Combination valve and the method that breaks down of getter assembly.
18. 1 kinds of motor vehicles the most as described in the present invention.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1502884.8 | 2015-02-20 | ||
| GB1502884.8A GB2532092B (en) | 2015-02-20 | 2015-02-20 | A method for preventing malfunctioning of a combined valve and aspirator assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105905089A true CN105905089A (en) | 2016-08-31 |
Family
ID=52821941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610088047.7A Pending CN105905089A (en) | 2015-02-20 | 2016-02-17 | A method for preventing malfunctioning of a combined valve and aspirator assembly |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN105905089A (en) |
| DE (1) | DE102016102623A1 (en) |
| GB (1) | GB2532092B (en) |
| MX (1) | MX2016002100A (en) |
| RU (1) | RU2698615C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946457A (en) * | 2020-07-31 | 2020-11-17 | 东风汽车集团有限公司 | Ice breaking control method for electronic throttle valve of gasoline engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552976B (en) | 2016-08-17 | 2018-09-05 | Ford Global Tech Llc | A method of controlling an aspirator valve |
| JP6589917B2 (en) * | 2017-03-22 | 2019-10-16 | トヨタ自動車株式会社 | Control device for internal combustion engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1778331A1 (en) * | 1990-09-13 | 1992-11-30 | Altajskij Polt I Polzun | Internal combustion engine supercharger |
| KR100482139B1 (en) * | 2002-11-23 | 2005-04-14 | 현대자동차주식회사 | check valve prevented from freezing |
| JP2005188332A (en) * | 2003-12-24 | 2005-07-14 | Toyota Motor Corp | Ejector device |
| JP2007218124A (en) * | 2006-02-14 | 2007-08-30 | Toyota Motor Corp | Ejector system for vehicle and control device |
-
2015
- 2015-02-20 GB GB1502884.8A patent/GB2532092B/en not_active Expired - Fee Related
-
2016
- 2016-02-15 DE DE102016102623.9A patent/DE102016102623A1/en not_active Withdrawn
- 2016-02-17 MX MX2016002100A patent/MX2016002100A/en unknown
- 2016-02-17 CN CN201610088047.7A patent/CN105905089A/en active Pending
- 2016-02-19 RU RU2016105736A patent/RU2698615C2/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946457A (en) * | 2020-07-31 | 2020-11-17 | 东风汽车集团有限公司 | Ice breaking control method for electronic throttle valve of gasoline engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016102623A1 (en) | 2016-08-25 |
| RU2016105736A3 (en) | 2019-07-17 |
| RU2698615C2 (en) | 2019-08-29 |
| MX2016002100A (en) | 2017-01-05 |
| RU2016105736A (en) | 2017-08-24 |
| GB201502884D0 (en) | 2015-04-08 |
| GB2532092A (en) | 2016-05-11 |
| GB2532092B (en) | 2017-01-25 |
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Application publication date: 20160831 |