CN106121844A - Detection method, device and the automobile of a kind of vent valve Block failure - Google Patents
Detection method, device and the automobile of a kind of vent valve Block failure Download PDFInfo
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- CN106121844A CN106121844A CN201610791694.4A CN201610791694A CN106121844A CN 106121844 A CN106121844 A CN 106121844A CN 201610791694 A CN201610791694 A CN 201610791694A CN 106121844 A CN106121844 A CN 106121844A
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- electromotor
- vent valve
- turbocharger
- preset
- admission pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- 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
- F02D2041/228—Warning displays
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
This application discloses detection method, device and the automobile of a kind of vent valve Block failure, this detection method and device to be used for detecting whether the vent valve of the turbocharger of electromotor on automobile there occurs clamping stagnation, be specially the duty to electromotor and judge；When electromotor is in the biggest loading zone, obtain the admission pressure of electromotor；The difference of admission pressure with the highest admission pressure of supercharger preset is judged；If difference is higher than the difference threshold preset, and duration is beyond the first duration threshold value preset, then judge that vent valve Block failure occurs in turbocharger；When judging that vent valve Block failure occurs in turbocharger, perform the Fisrt fault disposal action preset.By performing Fisrt fault disposal action, make electromotor itself that this fault to be reacted in time, it is to avoid fault expands or avoid other harmful effects that this fault causes further, thus avoids electromotor cannot to work by normal table because of vent valve clamping stagnation.
Description
Technical field
The application relates to automobile technical field, more particularly, it relates to the detection method of a kind of vent valve Block failure, dress
Put and automobile.
Background technology
Turbocharger is the supercharging equipment on a kind of automobile, and including turbine and compressor, both pass through turbine wheel shaft
Coaxial connection.The high-temp waste gas that electromotor is discharged enters rear drive turbine in turbine and rotates, and turbine wheel shaft drives in compressor
Impeller high speed rotating, drives air into electromotor in eccentric fashion, it is possible to increase the density of the induced air of electromotor to 2～3
Atmospheric pressure, thus spray more fuel oil to electromotor, to reach to improve the purpose of electromotor own power.
Turbocharger is provided with vent valve, for supercharger being carried out self-protection, when turbocharger exceedes regulation
Revolution time, in the shell of compressor, pressure can exceed setting, and the gases at high pressure in compressor are opened by sebific duct pushing drawing rod
Vent valve, a part of waste gas can be directly entered tailpipe without turbine, causes supercharger revolution to decline, self regulation
Complete, thus complete the protection act to turbocharger.
Vent valve is operated in hot environment, because many reasons such as high temperature and soot, it may occur that clamping stagnation event
Barrier.If vent valve clamping stagnation is in off position, it is too high that turbocharger operation there will be admission pressure when big load area, causes
Making pipeline there is the risk of explosion, engine combustion detonation pressure improves, thus causes electromotor to work by normal table.
Summary of the invention
In view of this, the application provides detection method, device and the automobile of a kind of vent valve Block failure, increases for turbine
The Block failure of the vent valve of depressor detects, to avoid electromotor cannot to work by normal table because of vent valve clamping stagnation.
To achieve these goals, it is proposed that scheme as follows:
The detection method of a kind of vent valve Block failure, is applied to the whirlpool turbocharger of electromotor on automobile, described inspection
Survey method specifically includes step:
The duty of described electromotor is judged；
When described electromotor is in the biggest load condition, obtain the admission pressure of described electromotor；
The difference of described admission pressure with the highest admission pressure of supercharger preset is judged；
If described difference is higher than the difference threshold preset, and duration is beyond the first duration threshold value preset, then sentence
There is vent valve Block failure in fixed described turbocharger；
When judging that described vent valve Block failure occurs in described turbocharger, the Fisrt fault performing to preset is disposed dynamic
Make.
Optionally, the Fisrt fault disposal action that described execution is preset, including:
Block failure warning message is sent to driver；
Meanwhile, the distributive value of described electromotor is limited.
Optionally, described detection method further comprises the steps of:
When described electromotor is in cruising condition, obtain the delivery temperature of described electromotor further；
The rotating speed detecting described electromotor is the most stable with rate of load condensate；
If described rotating speed is stable with described rate of load condensate, then described admission pressure and described delivery temperature are judged；
If described admission pressure is less than the default admission pressure record value corresponding with described rotating speed and described rate of load condensate, and
Described delivery temperature is higher than the default delivery temperature record value corresponding with described rotating speed and described rate of load condensate, and duration exceeds
The the second duration threshold value preset, then judge that described vent valve Block failure occurs in described turbocharger；
When judging that described vent valve Block failure occurs in described turbocharger, the second fault performing to preset is disposed dynamic
Make.
Optionally, the second fault disposal action that described execution is preset, including:
Only send described Block failure warning message to driver.
The detection device of a kind of vent valve Block failure, is applied to the turbocharger of electromotor on automobile, described detection
Device includes:
Duty judge module, for judging the duty of described electromotor
When described duty judge module, admission pressure acquisition module, for judging that described electromotor is in the biggest bearing
During lotus state, obtain the admission pressure of described electromotor；
First condition judgment module, for entering the difference of described admission pressure with the highest admission pressure of supercharger preset
Row judges；
Fisrt fault determination module, if for described difference higher than the difference threshold preset, and duration is beyond pre-
If the first duration threshold value, then judge that vent valve Block failure occurs in described turbocharger；
Fisrt fault disposes module, when judging that described vent valve Block failure occurs in described turbocharger, performs pre-
If Fisrt fault disposal action.
Optionally, described Fisrt fault disposal module includes:
First alarm unit, for sending Block failure warning message to driver；
Limit instruction sending unit, limit instruction for sending oil spout to the electronic control unit of described electromotor, described
Oil spout limits instruction for limiting the distributive value of described electromotor.
Optionally, described detection device also includes:
Delivery temperature acquisition module, for when described electromotor is in cruising condition, obtains described electromotor further
Delivery temperature；
Steady operation judge module, the most stable with rate of load condensate for judging the rotating speed of described electromotor；
Second condition judgment module, if stable for described rotating speed and described rate of load condensate, then to described admission pressure and
Described delivery temperature judges；
Second fault determination module, if for described admission pressure less than corresponding with described rotating speed and described rate of load condensate
Preset admission pressure record value, and described delivery temperature is higher than the default delivery temperature corresponding with described rotating speed and described rate of load condensate
Record value, and duration is beyond the second duration threshold value preset, then judge that the event of vent valve clamping stagnation occurs in described turbocharger
Barrier；
Second fault disposes module, for judging that venting occurs in described turbocharger when described second fault determination module
During valve Block failure, perform the second protection act preset.
Optionally, described second fault disposal module includes:
Second alarm unit, for only sending described Block failure warning message to driver.
A kind of automobile, including electromotor, described electromotor is provided with turbocharger, the electronic control unit of described automobile
It is provided with and detects device as above；
Described detection device for the vent valve of described turbocharger whether generation clamping stagnation detects.
From above-mentioned technical scheme it can be seen that this application discloses the detection method of a kind of vent valve Block failure, dress
Putting and automobile, this detection method and device are for detecting whether the vent valve of the turbocharger of electromotor on automobile there occurs card
Stagnant, it is specially the duty to electromotor and judges；When electromotor is in the biggest loading zone, obtain entering of electromotor
Atmospheric pressure；The difference of admission pressure with the highest admission pressure of supercharger preset is judged；If difference is higher than default
Difference threshold, and duration is beyond the first duration threshold value preset, then judge that vent valve Block failure occurs in turbocharger；
When judging that vent valve Block failure occurs in turbocharger, perform the Fisrt fault disposal action preset.By performing first
Fault disposal action, makes electromotor itself react this fault in time, it is to avoid fault expands further or avoids this event
Other harmful effects that barrier causes, thus avoid electromotor cannot to work by normal table because of vent valve clamping stagnation.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of application, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The flow chart of the inspection method embodiment of a kind of purge valve malfunction that Fig. 1 provides for the application；
The flow chart of the inspection method embodiment of the another kind of purge valve malfunction that Fig. 2 provides for the application；
The structured flowchart checking device embodiment of a kind of purge valve malfunction that Fig. 3 provides for the application；
The structured flowchart checking device embodiment of the another kind of purge valve malfunction that Fig. 4 provides for the application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Describe, it is clear that described embodiment is only some embodiments of the present application rather than whole embodiments wholely.Based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of the application protection.
Embodiment one
The flow chart of the inspection method embodiment of a kind of purge valve malfunction that Fig. 1 provides for the application.
As it is shown in figure 1, the inspection method that the present embodiment provides is for the clamping stagnation of the turbocharger of electromotor on automobile
Fault detects, and so-called Block failure refers to that the vent valve clamping stagnation of this turbocharger in off position or open mode, is led
Cause cannot change state, i.e. cannot open or close, and the present embodiment is to clamping stagnation in off position, causes the fault that cannot open
Detecting, concrete detection method comprises the steps:
S101: the duty of electromotor is detected.
The electromotor i.e. detecting automobile with which type of duty is operated, for the present invention, to vent valve
The related duty of Block failure is the biggest load condition and cruising condition.The biggest load condition is specifically at automobile
It is in and runs at high speed, and state during output relatively high power；Cruising condition refers to that output is the most constant, it is critical only that and is in
Level road at the uniform velocity transport condition.
S102: obtain the admission pressure of electromotor.
When this electromotor is in the big load condition of above-mentioned high speed, obtain the admission pressure of this electromotor, air inlet here
Pressure refers to the pressure at the inlet manifold of electromotor, is i.e. equal to the output pressure of turbocharger end, this pressure energy
Enough weigh the compression effectiveness of turbocharger.
S103: the difference of admission pressure the highest to admission pressure and supercharger judges.
This difference is the difference between admission pressure and a preset value, and this preset value is supercharging for advancing with machinery
The highest admission pressure of supercharger that device sets, the meaning of the highest admission pressure of this supercharger is, when the air pressure in compressor surpasses
When crossing this pressure, just should open under the effect of the air pressure that vent valve inputs at sebific duct, if vent valve can not be opened, this difference
Will persistently increase.Saying from secondary meaning, the existence of this difference inherently can reflect that vent valve has been likely to occur to a certain degree
Clamping stagnation.
S104: judge that vent valve Block failure occurs in turbocharger according to this difference.
If above-mentioned difference, i.e. admission pressure exceed default difference threshold with the difference of the highest admission pressure of supercharger,
And when exceeding the duration of this difference threshold beyond the first duration threshold value preset, then judge that venting occurs in this turbocharger
Valve Block failure.
Above-mentioned difference threshold can be determined according to the safety allowance of the compressor of turbocharger, it is impossible to selected
Height, otherwise can cause booster fault, can not select too low, otherwise there will be simply because the brief fluctuations of air pressure causes fault by mistake
Report；First duration threshold value can be determined according to concrete test data, can select second DBMS or Millisecond data.
S105: perform the Fisrt fault disposal action preset.
When judging that vent valve Block failure occurs in this turbocharger, take the Fisrt fault disposal action preset, with
Make electromotor itself that this fault to be reacted in time, it is to avoid fault expand further or avoid this fault causes other not
Good impact, thus avoid the problem that misoperation occurs in automobile.
First this Fisrt fault disposal action for send Block failure warning message to driver, so that driver knows
This fault, such that it is able to make protective measure according to this fault；It addition, also include the distributive value limiting electromotor, entrance is made to send out
The oil mass of motivation reduces, it is ensured that admission pressure is without departing from limit value.
From technique scheme it can be seen that present embodiments provide the detection method of a kind of vent valve Block failure, should
Detection method, for detecting whether the vent valve of the turbocharger of electromotor on automobile there occurs clamping stagnation, is specially electromotor
Duty judge；When electromotor is in the biggest loading zone, obtain the admission pressure of electromotor；To admission pressure
Judge with the difference of the default the highest admission pressure of supercharger；If difference is higher than the difference threshold preset, and when continuing
Long beyond the first duration threshold value preset, then judge that vent valve Block failure occurs in turbocharger；When judging turbocharger
When vent valve Block failure occurs, perform the Fisrt fault disposal action preset.By performing Fisrt fault disposal action, make to send out
This fault is reacted by motivation itself in time, it is to avoid fault expands or avoid other bad shadows that this fault causes further
Ring, thus avoid electromotor cannot to work by normal table because of vent valve clamping stagnation.
Above-described embodiment is the detection carried out vent valve clamping stagnation in off position, if vent valve clamping stagnation is opening shape
State, when turbocharger works under partial load condition, then can cause admission pressure on the low side, and engine consumption reduces, thus
Causing the problem that electromotor emergent power is not enough, to this end, the application also provides for following example, following example can not only be examined
Measuring air valve is clamping stagnation in the case of closing, moreover it is possible to can detect vent valve clamping stagnation in the case of opening.
Embodiment two
The flow chart of the inspection method embodiment of the another kind of purge valve malfunction that Fig. 2 provides for the application.
As in figure 2 it is shown, the inspection method that the present embodiment provides is for the clamping stagnation of the turbocharger of electromotor on automobile
Fault detects, and so-called Block failure refers to that the vent valve clamping stagnation of this turbocharger in off position or open mode, is led
Cause cannot change state, i.e. cannot open or close, and concrete detection method comprises the steps:
S201: the duty of electromotor is detected.
The electromotor i.e. detecting automobile with which type of duty is operated, for the present invention, to vent valve
The related duty of Block failure is the biggest load condition and cruising condition.The biggest load condition is specifically at automobile
It is in and runs at high speed, and state during output relatively high power；Cruising condition refers to that output is the most constant, it is critical only that and is in
Level road at the uniform velocity transport condition.
S202: obtain the admission pressure of electromotor.
When this electromotor is in the big load condition of above-mentioned high speed, obtain the admission pressure of this electromotor, air inlet here
Pressure refers to the pressure at the inlet manifold of electromotor, is i.e. equal to the output pressure of turbocharger end, this pressure energy
Enough weigh the compression effectiveness of turbocharger.
S203: the difference of admission pressure the highest to admission pressure and supercharger judges.
This difference is the difference between admission pressure and a preset value, and this preset value is supercharging for advancing with machinery
The highest admission pressure of supercharger that device sets, the meaning of the highest admission pressure of this supercharger is, when the air pressure in compressor surpasses
When crossing this pressure, just should open under the effect of the air pressure that vent valve inputs at sebific duct, if vent valve can not be opened, this difference
Will persistently increase.Saying from secondary meaning, the existence of this difference inherently can reflect that vent valve has been likely to occur to a certain degree
Clamping stagnation.
S204: judge that vent valve Block failure occurs in turbocharger according to this difference.
If above-mentioned difference, i.e. admission pressure exceed default difference threshold with the difference of the highest admission pressure of supercharger,
And when exceeding the duration of this difference threshold beyond the first duration threshold value preset, then judge that venting occurs in this turbocharger
Valve Block failure.
Above-mentioned difference threshold can be determined according to the safety allowance of the compressor of turbocharger, it is impossible to selected
Height, otherwise can cause booster fault, can not select too low, otherwise there will be simply because the brief fluctuations of air pressure causes fault by mistake
Report；First duration threshold value can be determined according to concrete test data, can select second DBMS or Millisecond data.
S205: perform the Fisrt fault disposal action preset.
When judging that vent valve Block failure occurs in this turbocharger, take the Fisrt fault disposal action preset, with
Make electromotor itself that this fault to be reacted in time, it is to avoid fault expand further or avoid this fault causes other not
Good impact, thus avoid the problem that misoperation occurs in automobile.
First this Fisrt fault disposal action for send Block failure warning message to driver, so that driver knows
This fault, such that it is able to make protective measure according to this fault；It addition, also include the distributive value limiting electromotor, entrance is made to send out
The oil mass of motivation reduces, it is ensured that admission pressure is without departing from limit value.
S206: obtain the delivery temperature of electromotor.
When this automobile is not in the biggest load condition, and when being in cruising condition, obtain this electromotor further
Delivery temperature.Delivery temperature refers to the temperature of the waste gas that electromotor discharged.
S207: the rotating speed of detection electromotor is the most stable with load.
By the detection of rotating speed and load being can determine, this electromotor is in level road constant speed state, stabilization of speed refers to turn
Speed is in certain tachometer value, and steady load refers to that the load of output also keeps stable.
S208: admission pressure and delivery temperature are judged.
Above-mentioned admission pressure and delivery temperature carry out judgement here refer to judge that admission pressure is remembered with default admission pressure
The relation of record value, also includes determining whether the relation of delivery temperature and default delivery temperature record value.Above-mentioned two record value derives from
Record form in the electronic control unit of automobile.When this form is that electromotor is carried out bench test, started by record
Machine admission pressure-delivery temperature map under each rotating speed with load, has corresponding record value in this map.
S209: judge whether that vent valve Block failure occurs.
By the judgement to intake air temperature and delivery temperature, when admission pressure less than corresponding with rotating speed and load preset into
Atmospheric pressure record value, and delivery temperature is higher than the default delivery temperature record value corresponding with rotating speed and load, and above-mentioned state is held
When continuous duration is beyond the second duration threshold value preset, it is determined that vent valve Block failure occurs in the turbocharger of this electromotor.Should
Setting principle and the method for the above-mentioned first duration threshold value of the second duration threshold reference are configured.
S210: perform the second fault disposal action preset.
This second fault disposal action is aimed at owing to vent valve clamping stagnation is in open mode, cause admission pressure not enough and
Design, owing to admission pressure deficiency causes output not enough, the most no longer limit distributive value, and only send out to driver
Go out clamping stagnation fault alarm information, to notify this vent valve generation Block failure of driver.
From technique scheme it can be seen that present embodiments provide the detection method of a kind of vent valve Block failure, should
Detection method is for detecting whether the vent valve of the turbocharger of electromotor on automobile there occurs clamping stagnation, specifically by respectively
The judgement of each parameter when automobile is at a high speed big load condition and cruising condition, determines whether turbocharger exits
Valve clamping stagnation, performs Fisrt fault disposal action respectively when there is above-mentioned vent valve Block failure or the second fault is disposed dynamic
Make.By corresponding fault disposal action, make electromotor itself that this fault to be reacted in time, it is to avoid fault expands further
Or avoid other harmful effects that this fault causes, thus avoid the electromotor cannot normal table work because of vent valve clamping stagnation
Make.
Embodiment three
The structured flowchart checking device embodiment of a kind of purge valve malfunction that Fig. 3 provides for the application.
As it is shown on figure 3, the inspection device that the present embodiment provides is for the clamping stagnation of the turbocharger of electromotor on automobile
Fault detects, and so-called Block failure refers to that the vent valve clamping stagnation of this turbocharger in off position or open mode, is led
Cause cannot change state, i.e. cannot open or close, and the present embodiment is to clamping stagnation in off position, causes the fault that cannot open
Detecting, concrete detection device includes duty judge module 10, admission pressure acquisition module the 20, first condition adjudgement
Module 30, Fisrt fault judge module 40 and Fisrt fault dispose module 50.
Duty judge module 10 is for judging the duty of electromotor.
I.e. judge the electromotor of automobile with which type of duty is operated, for the present invention, to vent valve
The related duty of Block failure is the biggest load condition and cruising condition.The biggest load condition is specifically at automobile
It is in and runs at high speed, and state during output relatively high power；Cruising condition refers to that output is the most constant, it is critical only that and is in
Level road at the uniform velocity transport condition.
Admission pressure acquisition module 20, for when this electromotor is in the big load condition of above-mentioned high speed, obtains this electromotor
Admission pressure, admission pressure here refers to the pressure at the inlet manifold of electromotor, is i.e. equal to turbocharger end
Output pressure, this pressure can weigh the compression effectiveness of turbocharger.
First condition judgment module 30 judges for the difference of admission pressure the highest to admission pressure and supercharger.
This difference is the difference between admission pressure and a preset value, and this preset value is supercharging for advancing with machinery
The highest admission pressure of supercharger that device sets, the meaning of the highest admission pressure of this supercharger is, when the air pressure in compressor surpasses
When crossing this pressure, just should open under the effect of the air pressure that vent valve inputs at sebific duct, if vent valve can not be opened, this difference
Will persistently increase.Saying from secondary meaning, the existence of this difference inherently can reflect that vent valve has been likely to occur to a certain degree
Clamping stagnation.
According to this difference, Fisrt fault determination module 40 is for judging that vent valve Block failure occurs in turbocharger.
If the first condition judgment module 30 judges the difference of above-mentioned difference, i.e. admission pressure and the highest admission pressure of supercharger
Value exceedes default difference threshold, and when the duration exceeding this difference threshold exceeds the first duration threshold value preset, just sentences
There is vent valve Block failure in this turbocharger fixed.
Above-mentioned difference threshold can be determined according to the safety allowance of the compressor of turbocharger, it is impossible to selected
Height, otherwise can cause booster fault, can not select too low, otherwise there will be simply because the brief fluctuations of air pressure causes fault by mistake
Report；First duration threshold value can be determined according to concrete test data, can select second DBMS or Millisecond data.
Fisrt fault disposes module 50 for judging that vent valve occurs in this turbocharger when Fisrt fault determination module 40
During Block failure, take the Fisrt fault disposal action preset, so that this fault is reacted by electromotor itself in time, it is to avoid
Fault expands or avoids other harmful effects that this fault causes further, thus avoids automobile asking of misoperation occur
Topic.This module includes the first alarm unit 51 and limits instruction sending unit 52.
First alarm unit 51 is for sending Block failure warning message to driver, so that driver knows this event
Barrier, makes driver can make protective measure according to this fault；Limit instruction sending unit 52 for sending out to electronic control unit
Sending oil spout to limit instruction, this instruction, for limiting the distributive value of electromotor, makes the oil mass of entrance electromotor reduce, it is ensured that air inlet pressure
Power is without departing from limit value.
From technique scheme it can be seen that present embodiments provide the detection device of a kind of vent valve Block failure, should
Detection device, for detecting whether the vent valve of the turbocharger of electromotor on automobile there occurs clamping stagnation, is specially electromotor
Duty judge；When electromotor is in the biggest loading zone, obtain the admission pressure of electromotor；To admission pressure
Judge with the difference of the default the highest admission pressure of supercharger；If difference is higher than the difference threshold preset, and when continuing
Long beyond the first duration threshold value preset, then judge that vent valve Block failure occurs in turbocharger；When judging turbocharger
When vent valve Block failure occurs, perform the Fisrt fault disposal action preset.By performing Fisrt fault disposal action, make to send out
This fault is reacted by motivation itself in time, it is to avoid fault expands or avoid other bad shadows that this fault causes further
Ring, thus avoid electromotor cannot to work by normal table because of vent valve clamping stagnation.
Device in above-described embodiment is the detection carried out vent valve clamping stagnation in off position, if vent valve clamping stagnation exists
Opening, when turbocharger works under partial load condition, then can cause admission pressure on the low side, and engine consumption drops
Low, thus cause the problem that electromotor emergent power is not enough, to this end, the application also provides for following example, following example
Device can not only detect vent valve clamping stagnation in the case of closing, moreover it is possible to can detect vent valve clamping stagnation in the case of opening.
Embodiment four
The structured flowchart checking device embodiment of the another kind of purge valve malfunction that Fig. 4 provides for the application.
As shown in Figure 4, the inspection device that the present embodiment provides is to be additionally arranged delivery temperature on the basis of a upper embodiment
Acquisition module 60, steady operation judge module the 70, second condition judgment module the 80, second fault determination module 90 and the second fault
Dispose module 100.
When duty judge module 10, delivery temperature acquisition module 60 is for judging that this automobile is not in the biggest bearing
Lotus state, and when being in cruising condition, obtain the delivery temperature of this electromotor further.Delivery temperature refers to that electromotor is arranged
The temperature of the waste gas gone out.
Steady operation judge module 70 is the most stable with load for the rotating speed judging electromotor.
By the detection of rotating speed and load being can determine, this electromotor is in level road constant speed state, stabilization of speed refers to turn
Speed is in certain tachometer value, and steady load refers to that the load of output also keeps stable.
Second condition judgment module 80 is for judging admission pressure and delivery temperature.
Above-mentioned admission pressure and delivery temperature carry out judgement here refer to judge that admission pressure is remembered with default admission pressure
The relation of record value, also includes determining whether the relation of delivery temperature and default delivery temperature record value.Above-mentioned two record value derives from
Record form in the electronic control unit of automobile.When this form is that electromotor is carried out bench test, started by record
Machine admission pressure-delivery temperature map under each rotating speed with load, has corresponding record value in this map.
Second fault determination module 90 is for judging whether the event of vent valve clamping stagnation occur according to intake air temperature and delivery temperature
Barrier.
By the second condition judgment module 80, intake air temperature and the judgement of delivery temperature, the second fault determination module 90 are existed
Admission pressure is less than the default admission pressure record value corresponding with rotating speed and load, and delivery temperature is higher than and rotating speed and load pair
The default delivery temperature record value answered, and when above-mentioned state duration exceeds the second duration threshold value preset, it is determined that this starts
There is vent valve Block failure in the turbocharger of machine.The setting principle of the above-mentioned first duration threshold value of this second duration threshold reference
It is configured with method.
Second fault disposes module 100 for judging that vent valve card occurs in turbocharger when the second fault determination module 90
During stagnant fault, perform the second fault disposal action preset.
This second fault disposal action is aimed at owing to vent valve clamping stagnation is in open mode, cause admission pressure not enough and
Design, owing to admission pressure deficiency causes output not enough, the most no longer limit distributive value, this module only includes the
Two alarm units 101, this second alarm unit 101 is for sending Block failure warning message to driver, to notify driver
This vent valve generation Block failure.
From technique scheme it can be seen that present embodiments provide the detection method of a kind of vent valve Block failure, should
Detection method is for detecting whether the vent valve of the turbocharger of electromotor on automobile there occurs clamping stagnation, specifically by respectively
The judgement of each parameter when automobile is at a high speed big load condition and cruising condition, determines whether turbocharger exits
Valve clamping stagnation, performs Fisrt fault disposal action respectively when there is above-mentioned vent valve Block failure or the second fault is disposed dynamic
Make.By corresponding fault disposal action, make electromotor itself that this fault to be reacted in time, it is to avoid fault expands further
Or avoid other harmful effects that this fault causes, thus reach to avoid the electromotor cannot normal table because of vent valve clamping stagnation
Work.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, identical similar portion sees mutually.Upper to the disclosed embodiments
State bright, make professional and technical personnel in the field be capable of or use the application.To the multiple amendment of these embodiments to ability
Will be apparent from for the professional and technical personnel in territory, generic principles defined herein can be without departing from the application's
In the case of spirit or scope, realize in other embodiments.Therefore, the application be not intended to be limited to shown in this article these
Embodiment, and it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (9)
1. a detection method for vent valve Block failure, is applied to the turbocharger of electromotor on automobile, it is characterised in that
Described detection method specifically includes step:
The duty of described electromotor is judged；
When described electromotor is in the biggest load condition, obtain the admission pressure of described electromotor；
The difference of described admission pressure with the highest admission pressure of supercharger preset is judged；
If described difference is higher than the difference threshold preset, and duration is beyond the first duration threshold value preset, then judge institute
State turbocharger and vent valve Block failure occurs；
When judging that described vent valve Block failure occurs in described turbocharger, perform the Fisrt fault disposal action preset.
2. detection method as claimed in claim 1, it is characterised in that the Fisrt fault disposal action that described execution is preset, bag
Include:
Block failure warning message is sent to driver；
Meanwhile, the distributive value of described electromotor is limited.
3. detection method as claimed in claim 1 or 2, it is characterised in that described detection method further comprises the steps of:
When described electromotor is in cruising condition, obtain the delivery temperature of described electromotor further；
The rotating speed detecting described electromotor is the most stable with rate of load condensate；
If described rotating speed is stable with described rate of load condensate, then described admission pressure and described delivery temperature are judged；
If described admission pressure is less than the default admission pressure record value corresponding with described rotating speed and described rate of load condensate, and described
Delivery temperature is higher than the default delivery temperature record value corresponding with described rotating speed and described rate of load condensate, and duration is beyond presetting
The second duration threshold value, then judge described turbocharger occur described vent valve Block failure；
When judging that described vent valve Block failure occurs in described turbocharger, perform the second fault disposal action preset.
4. detection method as claimed in claim 3, it is characterised in that the second fault disposal action that described execution is preset, bag
Include:
Only send described Block failure warning message to driver.
5. a detection device for vent valve Block failure, is applied to the turbocharger of electromotor on automobile, it is characterised in that
Described detection device includes:
Duty judge module, for judging the duty of described electromotor
When described duty judge module, admission pressure acquisition module, for judging that described electromotor is in the biggest load shape
During state, obtain the admission pressure of described electromotor；
First condition judgment module, for sentencing the difference of described admission pressure with the highest admission pressure of supercharger preset
Disconnected；
Fisrt fault determination module, if for described difference higher than preset difference threshold, and duration beyond preset
First duration threshold value, then judge that vent valve Block failure occurs in described turbocharger；
Fisrt fault disposes module, and when judging that described vent valve Block failure occurs in described turbocharger, execution is preset
Fisrt fault disposal action.
Detect device the most as claimed in claim 5, it is characterised in that described Fisrt fault is disposed module and included:
First alarm unit, for sending Block failure warning message to driver；
Limit instruction sending unit, limit instruction, described oil spout for sending oil spout to the electronic control unit of described electromotor
Limit instruction for limiting the distributive value of described electromotor.
7. the detection device as described in claim 5 or 6, it is characterised in that described detection device also includes:
Delivery temperature acquisition module, for when described electromotor is in cruising condition, obtains the row of described electromotor further
Temperature；
Steady operation judge module, the most stable with rate of load condensate for judging the rotating speed of described electromotor；
Second condition judgment module, if stable for described rotating speed and described rate of load condensate, then to described admission pressure and described
Delivery temperature judges；
Second fault determination module, if preset less than corresponding with described rotating speed and described rate of load condensate for described admission pressure
Admission pressure record value, and described delivery temperature is higher than the default delivery temperature record corresponding with described rotating speed and described rate of load condensate
Value, and duration is beyond the second duration threshold value preset, then judge that vent valve Block failure occurs in described turbocharger；
Second fault disposes module, for judging that vent valve card occurs in described turbocharger when described second fault determination module
During stagnant fault, perform the second protection act preset.
8. detection method as claimed in claim 7, it is characterised in that described second fault is disposed module and included:
Second alarm unit, for only sending described Block failure warning message to driver.
9. an automobile, including electromotor, described electromotor is provided with turbocharger, it is characterised in that the electricity of described automobile
Sub-control unit is arranged just like the detection device described in any one of claim 5～8；
Described detection device for the vent valve of described turbocharger whether generation clamping stagnation detects.
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| CN201610791694.4A CN106121844A (en) | 2016-08-31 | 2016-08-31 | Detection method, device and the automobile of a kind of vent valve Block failure |
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| CN201610791694.4A CN106121844A (en) | 2016-08-31 | 2016-08-31 | Detection method, device and the automobile of a kind of vent valve Block failure |
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