CN110397511A - A kind of fault handling method and system - Google Patents
A kind of fault handling method and system Download PDFInfo
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- CN110397511A CN110397511A CN201910585021.7A CN201910585021A CN110397511A CN 110397511 A CN110397511 A CN 110397511A CN 201910585021 A CN201910585021 A CN 201910585021A CN 110397511 A CN110397511 A CN 110397511A
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- Prior art keywords
- failure
- pressure fuel
- troubleshooting
- module
- pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
-
- 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
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
- F02D2041/223—Diagnosis of fuel pressure sensors
-
- 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
- F02D2041/224—Diagnosis of the fuel system
-
- 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
- F02D2041/224—Diagnosis of the fuel system
- F02D2041/226—Fail safe control for fuel injection pump
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
Abstract
The invention discloses a kind of fault handling method and systems, this method comprises: the fault diagnosis result based on component each in high-pressure fuel oil system, classifies to failure；Corresponding troubleshooting strategy is determined according to failure modes result；According to troubleshooting strategy, troubleshooting is carried out to component.The embodiment of the present invention realizes after obtaining fault diagnosis result, corresponding troubleshooting strategy can be directly obtained, harm brought by each component failure in high-pressure fuel oil system is reduced in time, is realized under the premise of guaranteeing driver safety, as far as possible the output of guarantee vehicle power.
Description
Technical field
The present embodiments relate to Powertrain control technology more particularly to a kind of fault handling method and systems.
Background technique
Direct spray petrol engine in cylinder (Gasoline Direct Injection, GDI) technology is that fuel oil is directly sprayed into cylinder
The interior technology mixed with air inlet.Wherein, the advantages of GDI technology is that oil consumption is low, and power per liter is big, and compression ratio is up to 12, with same row
The general engine of amount all improves 10% compared to power and torque.The promotion of injection pressure keeps fuel-oil atmozation more careful, very
It is just realizing accurately that control oil spout is mixed with air inlet in proportion, is eliminating cylinder the shortcomings that spraying outside.Meanwhile nozzle location, spray
The special designs such as mist shape, charge air flow control and piston top shape keep oil gas abundant in entire cylinder, equal
Even mixing, to make fuel oil full combustion, energy conversion efficiency is higher.Therefore, direct spray petrol engine in cylinder is engine future
Developing direction, market accounting increases year by year.
For the ease of the promotion of cylinder injection pressure, need to introduce high-pressure fuel oil system.But zero in high-pressure fuel oil system
Failure caused by part failure, can bring different harm to vehicle driving.Therefore, how to component each in high-pressure fuel oil system
Troubleshooting is carried out, is a urgent problem to be solved.
Summary of the invention
In view of this, the present invention provides a kind of fault handling method and system, each component in high-pressure fuel oil system is reduced
Harm brought by breaking down, and under the premise of guaranteeing driver safety, guarantee vehicle power output as far as possible.
In a first aspect, the embodiment of the invention provides a kind of fault handling methods, comprising:
Based on the fault diagnosis result of component each in high-pressure fuel oil system, classify to failure；
Corresponding troubleshooting strategy is determined according to failure modes result；
According to the troubleshooting strategy, troubleshooting is carried out to the component.
Second aspect, the embodiment of the invention also provides a kind of fault processing systems, comprising: high-pressure fuel oil system and fuel oil
Pressure controller；The fuel pressure controller includes: fault diagnosis module and fault processing module；The fault diagnosis module
Connect with the fault processing module, the high-pressure fuel oil system respectively with the fault diagnosis module and the troubleshooting
Module connection；
Each component in the high-pressure fuel oil system that the fault processing module is determined based on the fault diagnosis module
Fault diagnosis result classifies to failure, and determines corresponding troubleshooting strategy according to failure modes result, according to institute
It states troubleshooting strategy and troubleshooting is carried out to the component.
The present invention carries out fault diagnosis to component each in high-pressure fuel oil system by fault diagnosis module, to obtain each component
Then corresponding fault diagnosis result classifies to failure by fault processing module, and determined according to failure modes result
Corresponding troubleshooting strategy carries out troubleshooting to each component, realizes and obtaining failure then according to troubleshooting strategy
After diagnostic result, corresponding troubleshooting strategy can be directly obtained, each component in high-pressure fuel oil system is reduced in time and event occurs
Harm, realizes under the premise of guaranteeing driver safety brought by barrier, as far as possible the output of guarantee vehicle power.
Detailed description of the invention
Fig. 1 is a kind of flow chart of fault handling method provided in an embodiment of the present invention；
Fig. 2 is a kind of high-pressure fuel oil system failure modes schematic diagram provided in an embodiment of the present invention；
Fig. 3 is the flow chart of another fault handling method provided in an embodiment of the present invention；
Fig. 4 is the relational graph between a kind of fire loss ratio and speed load limit value provided in an embodiment of the present invention；
Fig. 5 be in a kind of high-pressure fuel oil system provided in an embodiment of the present invention failure modes result and troubleshooting strategy it
Between mapping relations figure；
Fig. 6 is the flow chart of another fault handling method provided in an embodiment of the present invention；
Fig. 7 is the flow chart of another fault handling method provided in an embodiment of the present invention；
Fig. 8 is a kind of structural block diagram of fault processing system provided in an embodiment of the present invention；
Fig. 9 is the structural block diagram of another fault processing system provided in an embodiment of the present invention；
Figure 10 is the structural block diagram of another fault processing system provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of flow chart of fault handling method provided in an embodiment of the present invention, and the present embodiment is applicable to height
Each component carries out fault diagnosis in compression ignition oil system, and carries out classification troubleshooting in time, to guarantee the feelings of vehicle power output
Condition, this method can be executed by fault processing system, wherein this method can realize by the mode of hardware and/or software, and one
As can be integrated in fault processing system.Fault handling method in the present embodiment is using the troubleshooting system in above-described embodiment
System, is illustrated the process of troubleshooting.This method specifically comprises the following steps:
S110, the fault diagnosis result based on component each in high-pressure fuel oil system, classify to failure.
It in embodiment, may include multiple components in high-pressure fuel oil system, for example, including: high pressure in high-pressure fuel oil system
Five components such as fuel injector, high-pressure oil pump, low pressure fuel pump, high pressure oil rail, rail pressure sensor.For the ease of to high-pressure fuel oil system
In each component fault diagnosis, can configured with high-pressure fuel oil system vehicle in config failure diagnostic module and troubleshooting mould
Block.Wherein, fault diagnosis is carried out to component each in high-pressure fuel oil system by fault diagnosis module, obtains fault diagnosis result.
After obtaining fault diagnosis result, it can be classified by fault processing module to failure.
Specifically, step S110 may include step S1101-S1102:
S1101, fault diagnosis is carried out to each component in high-pressure fuel oil system by fault diagnosis module, to obtain each portion
The corresponding fault diagnosis result of part.
In embodiment, to include high pressure fuel injector, high-pressure oil pump, low pressure fuel pump, height in the high-pressure fuel oil system of vehicle
For pressure oil rail, rail pressure sensor, fault diagnosis result is illustrated.
Specifically, can be diagnosed by the voltage acquisition function of driving chip embedded in drive module high-pressure oil pump,
High pressure fuel injector and low pressure fuel pump whether there is overcurrent, shorted to earth, to power supply short circuit or open-circuit fault；By to high-pressure oil pump
There is overcurrent, shorted to earth with high pressure fuel injector, whether preset threshold is greater than to the number of power supply short circuit or open-circuit fault, if greatly
In preset threshold, then it is assumed that high-pressure oil pump, high pressure fuel injector are in contact bad error, wherein preset threshold may be configured as 3
It is secondary；By judging whether rail pressure sensor voltage is more than preset upper limit, or it is lower than pre-determined lower limit.To determine rail pressure sensor voltage
Whether too high or too low, i.e., rail pressure sensor voltage is more than preset upper limit, then rail pressure sensor overtension, rail pressure sensor electricity
It forces down in pre-determined lower limit, then rail pressure sensor brownout；By diagnosing whether rail pressure sensor signal exceeds zone of reasonableness
The upper limit or lower limit, to determine whether rail pressure signal credible, even rail pressure sensor signal exceed zone of reasonableness the upper limit or lower limit,
Then determine that rail pressure signal is insincere.
S1102, failure is divided according to fault diagnosis result, and according to fault harm degree by fault processing module
Class.
In embodiment, can classify according to fault harm degree to failure.Illustratively, failure can include: instrument
The failure of the limited traveling of the failure of display, power and the failure three classes failure of maintenance shut-downs.For the ease of to these three types of failures into
Row explanation, the failure that can show instrument are denoted as first kind failure, and the failure of the limited traveling of power is denoted as the second class failure, stops
The failure of maintenance is denoted as third class failure.Wherein, the failure that instrument is shown refers to the failure for not influencing vehicle normal driving, can
To be interpreted as, for the failure that instrument is shown, limitation vehicle power output is not needed, it is only necessary to instrument fault lamp be lighted, mentioned
Awake driver pays attention to vehicle maintenance；The failure of traveling limited for power refers to that vehicle power need to be exported the event limited
Barrier, it can be understood as, when the failure of the limited traveling of power occurs in vehicle, vehicle is in the process of moving it is possible that unexpected
Acceleration or deceleration the case where, need to be to vehicle power in order to avoid unexpected acceleration or deceleration occurs in vehicle and causes accident
Output limited, make vehicle be in low speed state；The failure of maintenance shut-downs refers to not can guarantee normal vehicle operation
Failure, it can be understood as, if there is the failure of maintenance shut-downs in vehicle, will be unable to guarantee normal vehicle operation, need to stop at this time
Vehicle maintenance, and remind driver's failure that may be present.
Fig. 2 is a kind of high-pressure fuel oil system failure modes schematic diagram provided in an embodiment of the present invention.As shown in Fig. 2, instrument
The failure of display includes: low pressure fuel pump shorted to earth, high pressure fuel injector poor contact, high-pressure oil pump poor contact；Power is limited
The failure of traveling include: high pressure fuel injector shorted to earth, high pressure fuel injector overcurrent, high pressure fuel injector open circuit, high-pressure oil pump over the ground
Short circuit, high-pressure oil pump are to power supply short circuit, high-pressure oil pump open circuit, rail pressure sensor overtension, rail pressure sensor brownout, rail
Pressure sensor abnormal signal；The failure of maintenance shut-downs includes: low pressure fuel pump to power supply short circuit, low pressure fuel pump open circuit, high pressure oil rail
Leakage.Wherein, rail pressure sensor abnormal signal refers to that rail pressure sensor signal is insincere, i.e. the letter that is transmitted of rail pressure sensor
It number is inaccurate.
Certainly, fault processing module not only can carry out classification processing to failure, can also store, i.e., will to failure
Different failed storages is into pre-set memory space, in order to which the subsequent failure to vehicle is managed and calls.
S120, corresponding troubleshooting strategy is determined according to failure modes result.
In embodiment, after determining the failure modes result of vehicle, failure modes result and troubleshooting can be passed through
Mapping relations between strategy find the corresponding troubleshooting strategy of failure modes result.It is to be understood that in each failure
There is corresponding relationship between classification results and troubleshooting strategy, i.e., each failure is corresponding with a troubleshooting strategy, and
Each troubleshooting strategy can be corresponding with multiple failures.Certainly, in vehicle component be continuously increased, it is possible that new
Failure can also search solution from existing troubleshooting strategy when there is new failure.
S130, according to troubleshooting strategy, troubleshooting is carried out to component.
After determining the troubleshooting strategy of each component, fault processing module can be according to troubleshooting strategy, to each portion
Part carries out troubleshooting.
The technical solution of the present embodiment carries out failure to component each in high-pressure fuel oil system by fault diagnosis module and examines
It is disconnected, to obtain the corresponding fault diagnosis result of each component, then classified by fault processing module to failure, and according to event
Barrier classification results determine corresponding troubleshooting strategy, then according to troubleshooting strategy, carry out troubleshooting, solution to each component
It has determined in the prior art after the fault diagnosis result for obtaining each component, needing a pair of of a failure to be analyzed and processed can just find
The complicated processes of corresponding troubleshooting strategy, realize after obtaining fault diagnosis result, can directly obtain at corresponding failure
Reason strategy reduces harm brought by each component failure in high-pressure fuel oil system in time, realizes and guaranteeing driver
Under the premise of safety, guarantee vehicle power output as far as possible.
On the basis of the above embodiments, the failure of the limited traveling of power includes: high pressure fuel injector failure, high-pressure oil pump event
Barrier and rail pressure sensor failure.In the case where failure is the failure of the limited traveling of power, can further have to step 120
Body explanation.Fig. 3 is the flow chart of another fault handling method provided in an embodiment of the present invention.As shown in figure 3, this method is specific
Include the following steps:
S210, the fault diagnosis result based on component each in high-pressure fuel oil system, classify to failure.
S220, determine whether failure is high pressure fuel injector failure according to failure modes result, if so, thening follow the steps
S230；If it is not, thening follow the steps S240.
It should be noted that when failure is the failure of the limited traveling of power, the failure of the limited traveling of power includes:
High pressure fuel injector failure, high-pressure oil pump failure and rail pressure sensor failure.It is to be understood that in embodiment, according to failure point
Class result determines failure not when being high pressure fuel injector failure, and failure can be high-pressure oil pump failure and rail pressure sensor failure, i.e.,
Execute step S240.
The peak torque and full admission amount of vehicle where S230, adjustment high-pressure fuel oil system.
It should be noted that high pressure fuel injector failure will lead to where cylinder can not normal combustion, to can generate
Vehicle catches fire.It is to be understood that in order to avoid vehicle generation is caught fire, in the case where failure is high pressure fuel injector failure, according to
Fire loss ratio limits the peak torque and full admission amount of vehicle where high-pressure fuel oil system.Fig. 4 is that the embodiment of the present invention provides
A kind of fire loss ratio and speed load limit value between relational graph.As shown in figure 4, being in 0-6% range in engine fire rate
Interior, the engine speed and engine load of vehicle are in maximum value；And with the raising of engine fire rate, correspondingly, hair
Motivation revolving speed and engine load also decline therewith.It is to be understood that engine fire rate and engine speed, engine load
Inversely.It in embodiment, can be according to engine fire rate as shown in Figure 4 when failure is high pressure fuel injector failure
Relationship between engine speed, engine load, the peak torque of vehicle where adjustment high-pressure fuel oil system and it is maximum into
Tolerance.Wherein, described herein to be, in Fig. 4, do not show that peak torque and full admission amount respectively with engine fire rate
Between relationship, in the actual operation process, full admission amount is directly proportional to engine load, i.e., when full admission amount is bigger
When, engine load is also bigger, then can according to engine load and engine fire rate relationship adjustment full admission amount with
Relationship between engine fire rate.Correspondingly, peak torque is also directly proportional to engine load, i.e., peak torque is bigger, hair
Engine load is bigger, then can be according to the relationship of engine load and engine fire rate adjustment peak torque and engine fire
Relationship between rate.
It should be noted that limitation peak torque is embodied on fiery road torque and gas circuit torque.Wherein, fiery road is limited
Torque, which is embodied in igniting, to become smaller, and limitation gas circuit torque is embodied in the limitation of throttle opening.Certainly, the limitation of full admission amount
It is also embodied in the limitation of throttle opening, for example, original air throttle can reach 100%, after being restricted, air throttle is only
50% can be reached, so that the tolerance that air throttle passes through is restricted.
The engine speed and peak torque of vehicle where S240, adjustment high-pressure fuel oil system.
It should be noted that can adjust high compression ignition when failure is high-pressure oil pump failure and rail pressure sensor failure
The engine speed and peak torque of vehicle where oil system.Specifically, can be according to engine fire rate and hair as shown in Figure 3
Relationship between motivation revolving speed, engine load, to adjust the engine speed and maximum torsion of high-pressure fuel oil system place vehicle
Square.Wherein, the description in above-mentioned steps S230 is shown in the limitation of peak torque, details are not described herein.
S250, according to troubleshooting strategy, troubleshooting is carried out to component.
In embodiment, after the component to break down in determining high-pressure fuel oil system, at the failure according to each component
Reason strategy carries out troubleshooting to each component.Illustratively, it is assumed that when failure is high-pressure oil pump and rail pressure sensor failure, by
When rail pressure sensor and high-pressure oil pump break down, since rail pressure is unable to maintain that high pressure, to influence high-pressure fuel oil system
Actual fuel injection amount needs for engine speed to be limited at this time within 3000 revs/min (rpm), and limitation peak torque is
Within 40% under normal circumstances.Wherein, torque refers to the average torque exported when engine operating from crankshaft end, that is, starts
" turning strength " of machine is a parameter of engine performance, and the torque of engine is bigger, and " strength " of engine output is bigger, crankshaft
The variation of revolving speed is also faster.Under normal circumstances, the peak torque of engine is 100% under normal circumstances, i.e., engine exports
" strength " reach maximum；And when high-pressure oil pump and rail pressure sensor break down, it can be by vehicle where high-pressure fuel oil system
Peak torque is limited within 40%.
Fig. 5 be in a kind of high-pressure fuel oil system provided in an embodiment of the present invention failure modes result and troubleshooting strategy it
Between mapping relations figure.As shown in figure 5, the corresponding troubleshooting strategy of first kind failure are as follows: it is defeated not need limitation vehicle power
Out, it is only necessary to instrument fault lamp be lighted, driver is reminded to pay attention to vehicle maintenance；The corresponding troubleshooting strategy of second class failure
There are two types of, when being respectively as follows: the first for high pressure fuel injector failure, need to limit peak torque and full admission according to fire loss ratio
Amount；Second be high-pressure oil pump failure and rail pressure sensor failure when, need to limit engine speed within 3000rpm, limit
Peak torque processed is under normal circumstances 40%；The corresponding troubleshooting strategy of third class failure are as follows: vehicle not can guarantee
Normally travel needs maintenance shut-downs, reminds driver's failure that may be present.
On the basis of the above embodiments, for the ease of accurately obtaining corresponding troubleshooting according to failure modes result
Strategy can create troubleshooting mapping table to failure modes result and troubleshooting strategy, i.e., in failure modes result and failure
Corresponding relationship is established between processing strategie.Fig. 6 is the flow chart of another fault handling method provided in an embodiment of the present invention.Such as
Shown in Fig. 6, this method specifically comprises the following steps:
S310, the fault diagnosis result based on component each in high-pressure fuel oil system, classify to failure.
S320, creation troubleshooting mapping table.
Wherein, troubleshooting mapping table is used to store the corresponding relationship between failure modes result and troubleshooting strategy.
In embodiment, for the ease of according to failure modes as a result, corresponding troubleshooting strategy can be obtained as soon as possible, in failure modes
As a result mapping relations are established between troubleshooting strategy.It certainly, is multipair between failure modes result and troubleshooting strategy
One relationship, i.e., multiple failures can correspond to the same troubleshooting strategy.
S330, troubleshooting mapping table is searched according to failure modes result.
In embodiment, after obtaining the failure modes result of each component, according to failure modes result and troubleshooting
Mapping relations between strategy find corresponding troubleshooting mapping table.
S340, the corresponding troubleshooting strategy of failure modes result is determined from troubleshooting mapping table.
In embodiment, the corresponding troubleshooting strategy of failure modes result is found in troubleshooting mapping table.Tool
Body, it is matched according to the failure in failure modes result with the mapping relations between troubleshooting strategy, by successful match
Troubleshooting strategy as the corresponding solution of the failure.
S350, according to troubleshooting strategy, troubleshooting is carried out to component.
The technical solution of the present embodiment, by establishing mapping relations between failure modes result and troubleshooting strategy,
After obtaining failure modes result, corresponding troubleshooting strategy can be directly found, without being divided one by one failure
Analysis processing, and determine the complicated processes of corresponding troubleshooting strategy, each component in high-pressure fuel oil system is reduced in time to be occurred
Harm, realizes under the premise of guaranteeing driver safety brought by failure, as far as possible the output of guarantee vehicle power.
On the basis of the above embodiments, right according to troubleshooting strategy and the one-to-one relationship of failure modes result
The detailed process of fault handling method is illustrated.Fig. 7 is the stream of another fault handling method provided in an embodiment of the present invention
Cheng Tu.
With reference to Fig. 7, this method specifically comprises the following steps:
S410, fault diagnosis is carried out to component each in high-pressure fuel oil system by fault diagnosis module.
S420, each component is determined with the presence or absence of failure, if so, thening follow the steps S430；If it is not, thening follow the steps S410.
S430, classify to the failure of component each in high-pressure fuel oil system, obtain failure modes result.
In embodiment, failure can be divided into failure, the failure of the limited traveling of power and the event of maintenance shut-downs that instrument is shown
Barrier is these three types of.Specific classification results are shown in the description of above-described embodiment, and details are not described herein.
S440, corresponding troubleshooting strategy is determined according to failure modes result.
It should be noted that failure can be divided into three classes, correspondingly, troubleshooting strategy is also classified into three kinds, can distinguish
For troubleshooting strategy 1, troubleshooting strategy 2 and troubleshooting strategy 3.Wherein, troubleshooting strategy 1 is that malfunction coefficient exists
On instrument board；Troubleshooting strategy 2 is peak torque, engine speed and the full admission amount for adjusting engine；Troubleshooting
Strategy 3 is the strategy of maintenance shut-downs.
S450, according to troubleshooting strategy, troubleshooting is carried out to each component.
In embodiment, after determining the corresponding troubleshooting strategy of failure, according to troubleshooting strategy to each component
Carry out troubleshooting.
It should be noted that the fault handling method in above-described embodiment is executed by fault processing system.Fig. 8
It is a kind of structural block diagram of fault processing system provided in an embodiment of the present invention.As shown in figure 8, fault processing system, comprising: high
Compression ignition oil system 510 and fuel pressure controller 520；Fuel pressure controller 520 includes: fault diagnosis module 5201 and failure
Processing module 5202；Fault diagnosis module 5201 is connect with fault processing module 5202, high-pressure fuel oil system 510 respectively with failure
Diagnostic module 5201 and fault processing module 5202 connect；
The event of each component in the high-pressure fuel oil system 510 that fault processing module 5202 is determined based on fault diagnosis module 5201
Hinder diagnostic result, classifies to failure, and corresponding troubleshooting strategy is determined according to failure modes result, according to failure
Processing strategie carries out troubleshooting to component.
In embodiment, fault diagnosis is carried out to component each in high-pressure fuel oil system 510 by fault diagnosis module 5201,
To obtain the fault diagnosis result of each component, then classified by fault processing module 5202 to failure, to obtain failure
Then classification results determine corresponding troubleshooting strategy according to failure modes result so that fault processing module 5202 according to
Troubleshooting strategy carries out troubleshooting to each component.
The technical solution of the present embodiment, it is existing based on vehicle by not increasing system parts additionally in fault processing system
There is system, fault processing module and fault diagnosis module are integrated in fuel pressure controller, realizes and examine obtaining failure
After disconnected result, corresponding troubleshooting strategy can be directly obtained, each component in high-pressure fuel oil system is reduced in time and breaks down
Brought harm realizes under the premise of guaranteeing driver safety, as far as possible the output of guarantee vehicle power.
On the basis of the above embodiments, further embody is made to high-pressure fuel oil system and fuel pressure controller.
Fig. 9 is the structural block diagram of another fault processing system provided in an embodiment of the present invention.As shown in figure 9, high-pressure fuel oil system 510
It include: high pressure fuel injector 5101, high-pressure oil pump 5102, low pressure fuel pump 5103, high pressure oil rail 5104 and rail pressure sensor 5105；Combustion
Oil pressure force controller 520 further include: signal acquisition module 5203 and drive module 5204；
Wherein, the first end of fault diagnosis module 5201 and the first end of fault processing module 5202 pass through signal acquisition mould
Block 5203 is connect with rail pressure sensor 5105；The second of the second end of fault diagnosis module 5201 and fault processing module 5202
End is connect with high pressure fuel injector 5101, high-pressure oil pump 5102 and low pressure fuel pump 5103 by drive module 5204；
Signal acquisition module 5203 is used to acquire the fuel pressure pair of the connected high pressure oil rail 5104 of rail pressure sensor 5105
The electric signal answered, and electric signal is sent to fault diagnosis module 5201；Fault diagnosis module 5201 determines rail according to electric signal
The fault diagnosis result of pressure sensor 5105, and rail pressure sensor 5105 is carried out at failure by fault processing module 5202
Reason；
Drive module 5204 is for receiving the corresponding electricity of high pressure fuel injector 5101, high-pressure oil pump 5102 and low pressure fuel pump 5103
The feedback result of closed loop is flowed, so that fault diagnosis module 5201 determines the fault diagnosis result of corresponding component according to feedback result,
And troubleshooting is carried out to component by fault processing module 5202.
It is electrically connected it should be noted that being established between rail pressure sensor 5105 and signal acquisition module 5203, i.e.,
Signal acquisition module 5203 acquires the electric signal of rail pressure sensor 5105, and electric signal is sent to fault diagnosis module 5201,
So that fault diagnosis module 5201 carries out fault diagnosis by the electric signal of rail pressure sensor 5105, to determine rail pressure sensor
5105 and high pressure oil rail 5104 whether break down.Wherein, high pressure oil rail 5104 is mechanical parts.
It is available when carrying out fault diagnosis to high pressure fuel injector 5101, high-pressure oil pump 5102 and low pressure fuel pump 5103
The feedback result of 5103 corresponding current closed loop of high pressure fuel injector 5101, high-pressure oil pump 5102 and low pressure fuel pump determines whether to deposit
In failure.It should be noted that obtaining high pressure fuel injector 5101, high-pressure oil pump 5102 and low pressure fuel pump in drive module 5204
After the feedback result of 5103 corresponding current closed-loops, feedback result is sent to fault diagnosis module 5201, so that failure is examined
Disconnected module 5201 carries out diagnostic process to feedback result, to determine high pressure fuel injector 5101, high-pressure oil pump 5102 and low pressure oil
Pump 5103 whether there is failure.
Figure 10 is the structural block diagram of another fault processing system provided in an embodiment of the present invention.As shown in Figure 10, fuel oil
Pressure controller 520 further include: timing processing module 5205, logic judgment module 5206, power module 5207.Wherein, timing
The first end of processing module 5202 and the first end of logic judgment module 5206 are connect with signal acquisition module 5203, at timing
The second end of reason module 5202 is connect with the second end of logic judgment module 5206, the third end of logic judgment module 5206 and drive
Dynamic model block 5204 connects, and the 4th end of the third end of timing processing module 5202 and logic judgment module 5206 is and power module
5207 first end connection, the second end of power module 5207 is connect with external power supply, so that external power supply is power module
5207 are powered.
It should be noted that signal acquisition module 5203, timing processing module 5205, logic judgment module 5206,
Interaction between drive module 5204, fault diagnosis module 5201 and fault processing module 5202 is data transmission, rail pressure sensing
Interaction between device 5105 and signal acquisition module 5203, drive module 5204 and high pressure fuel injector 5101, high-pressure oil pump 5102
And the interaction between low pressure fuel pump 5103, power module 5207 and timing processing module 5205, logic judgment module 5206 with
And the interaction between external power supply is energy transmission；Interaction between high-pressure oil pump 5102 and low pressure fuel pump 5103 is substance biography
It is defeated；Interaction between fuel pressure controller 520 and exterior strands and mounting bracket is positional interface.It should be noted that
In Figure 10, for ease of description signal acquisition module 5203, drive module 5204 respectively with fault diagnosis module 5201 and therefore
Hinder the relationship between processing module 5202, fault diagnosis module 5201 and fault processing module 5202 are being schemed as a whole
It is shown in 10, and the appended drawing reference of fault diagnosis module not shown in FIG. 10 and fault processing module.
It should be noted that between timing processing module 5205, logic judgment module 5206, power module 5207
Function and effect are same as the prior art, and details are not described herein.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of fault handling method characterized by comprising
Based on the fault diagnosis result of component each in high-pressure fuel oil system, classify to failure；
Corresponding troubleshooting strategy is determined according to failure modes result；
According to the troubleshooting strategy, troubleshooting is carried out to the component.
2. the method according to claim 1, wherein the failure based on component each in high-pressure fuel oil system is examined
Break as a result, classifying to failure, comprising:
Fault diagnosis is carried out to each component in high-pressure fuel oil system by fault diagnosis module, to obtain the corresponding event of each component
Hinder diagnostic result；
By fault processing module according to the fault diagnosis result, and classify according to fault harm degree to failure.
3. the method according to claim 1, wherein the failure includes: that the failure that shows of instrument, power are limited
The failure of traveling and the failure of maintenance shut-downs.
4. according to the method described in claim 3, it is characterized in that, the failure of the limited traveling of the power includes: high pressure fuel injector
Device failure, high-pressure oil pump failure and rail pressure sensor failure.
5. according to the method described in claim 4, it is characterized in that, the case where failure is the failure of the limited traveling of power
Under, it is described that corresponding troubleshooting strategy is determined according to failure modes result, comprising:
Determine whether the failure is high pressure fuel injector failure according to failure modes result；
If high pressure fuel injector failure, the peak torque and full admission amount of vehicle where adjusting the high-pressure fuel oil system；
If high-pressure oil pump failure and rail pressure sensor failure, the engine speed of vehicle where adjusting the high-pressure fuel oil system
And peak torque.
6. according to the method described in claim 3, it is characterized in that, the failure that the instrument is shown include: low pressure fuel pump over the ground
Short circuit, high pressure fuel injector poor contact, high-pressure oil pump poor contact；
The failure of the limited traveling of the power includes: that high pressure fuel injector shorted to earth, high pressure fuel injector overcurrent, high pressure fuel injector are opened
Road, high-pressure oil pump shorted to earth, high-pressure oil pump pass power supply short circuit, high-pressure oil pump open circuit, rail pressure sensor overtension, rail pressure
Sensor brownout, rail pressure sensor abnormal signal；
The failure of the maintenance shut-downs includes: that low pressure fuel pump reveals power supply short circuit, low pressure fuel pump open circuit, high pressure oil rail.
7. the method according to claim 1, wherein determining corresponding failure according to failure modes result described
Before processing strategie, further includes:
Create troubleshooting mapping table, the troubleshooting mapping table for store failure modes result and troubleshooting strategy it
Between corresponding relationship.
8. the method according to the description of claim 7 is characterized in that described determine at corresponding failure according to failure modes result
Reason strategy, comprising:
The troubleshooting mapping table is searched according to failure modes result；
The corresponding troubleshooting strategy of the failure modes result is determined from the troubleshooting mapping table.
9. a kind of fault processing system characterized by comprising high-pressure fuel oil system and fuel pressure controller；The fuel oil
Pressure controller includes: fault diagnosis module and fault processing module；The fault diagnosis module and the fault processing module
Connection, the high-pressure fuel oil system are connect with the fault diagnosis module and the fault processing module respectively；
The failure of each component in the high-pressure fuel oil system that the fault processing module is determined based on the fault diagnosis module
Diagnostic result classifies to failure, and determines corresponding troubleshooting strategy according to failure modes result, according to the event
Hinder processing strategie and troubleshooting is carried out to the component.
10. system according to claim 9, which is characterized in that the high-pressure fuel oil system includes: high pressure fuel injector, height
Pressure oil pump, low pressure fuel pump, high pressure oil rail and rail pressure sensor；The fuel pressure controller further include: signal acquisition module and
Drive module；
The first end of the fault diagnosis module and the first end of the fault processing module are equal by the signal acquisition module
It is connect with the rail pressure sensor；The second end of the fault diagnosis module and the second end of the fault processing module pass through institute
Drive module is stated to connect with the high pressure fuel injector, the high-pressure oil pump and the low pressure fuel pump；
The signal acquisition module be used for acquire the rail pressure sensor connect the high pressure oil rail fuel pressure it is corresponding
Electric signal, and the electric signal is sent to the fault diagnosis module；The fault diagnosis module is true according to the electric signal
The fault diagnosis result of the fixed rail pressure sensor, and failure is carried out to the rail pressure sensor by the fault processing module
Processing；
The drive module is closed for receiving the high pressure fuel injector, the high-pressure oil pump and the low pressure fuel pump corresponding current
The feedback result of ring, so that the fault diagnosis module determines the fault diagnosis result of corresponding component according to the feedback result,
And troubleshooting is carried out to the component by the fault processing module.
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