CN101201035A - Fuel system failure checking apparatus - Google Patents
Fuel system failure checking apparatus Download PDFInfo
- Publication number
- CN101201035A CN101201035A CNA2007101681715A CN200710168171A CN101201035A CN 101201035 A CN101201035 A CN 101201035A CN A2007101681715 A CNA2007101681715 A CN A2007101681715A CN 200710168171 A CN200710168171 A CN 200710168171A CN 101201035 A CN101201035 A CN 101201035A
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- Prior art keywords
- fuel
- value
- brushless motor
- pump
- air
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- 239000000446 fuel Substances 0.000 title claims abstract description 136
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 13
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000005355 Hall effect Effects 0.000 abstract description 5
- 230000005856 abnormality Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 238000012937 correction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000010349 pulsation Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a failure detection device for a fuel system. An ECU (10) judges whether the value of air fuel ratio is normal or abnormal based on the detection value of an oxygen concentration sensor (40), which is necessary for controlling the amount of the fuel ejection, and the detection value of a Hall effect element (312), which is necessary for controlling the set-up of a brushless motor (31). The ECU (10) judges at least one of a fuel tube (34), a pressure adjuster (33) and an ejector (50) in abnormal state after confirming that the rotation value of the brushless motor (31) is normal, that is, the ECU (10) judges abnormality in the fuel system except the fuel pump (30).
Description
Technical field
The present invention relates to detect the unusual fuel system failure checking apparatus that stops up such as fuel path.
Background technique
Traditionally, detecting wherein, petrolift is known (referring to patent document 1) by the device of the pump unusual condition of obstructions such as foreign matter.Though not special description the in patent document 1, unusual in pump, link to each other with petrolift and fuel supply to the fuel pipe of internal-combustion engine also can be caused obstruction, perhaps the pressure regulator of fuel metering pressure or link to each other with fuel pipe and the sparger of burner oil also may cause obstruction.
Traditionally, unusual for the obstruction that detects fuel pipe etc., fuel pressure sensor will be provided.And when the checkout value of this fuel pressure sensor becomes unusual when high, it is blocked promptly to detect fuel pipe.
Patent document 1:JP-04-284155A
Summary of the invention
Yet, must be provided for detecting unusual special fuel pressure transducers such as fuel pipe obstruction.In above-mentioned conventional arrangement, because this fuel pressure sensor is very expensive, it will cause expensive.
So the obstruction detecting unusual in petrolift unusually, during unusual in for example fuel pipe, the purpose of this invention is to provide a kind of fuel system failure checking apparatus that does not need the special fuel pressure transducer.
For this reason, the invention provides a kind of fuel system failure checking apparatus, comprising:
Petrolift, it has brushless motor and pump portion, and wherein said pump portion is rotated by described brushless motor, with pump fuel;
The rotational position detective device is used to detect the rotational position of described brushless motor;
Controller for motor is used for controlling described brushless motor based on the detected checkout value of described rotational position detective device;
The rotational speed computing device is used for calculating based on the detected checkout value of described rotational position detective device the rotating speed of described brushless motor;
Fuel pipe, it links to each other with described petrolift, with to the internal-combustion engine fueling;
The fuel flow rate control unit, it links to each other with described fuel pipe, and the control flow fuel;
Air/fuel ratio detecting apparatus is used for detecting the air fuel ratio of the air-fuel mixture that is drawn into internal-combustion engine;
The fuel abnormity determining device is used to judge whether the value of the detected air fuel ratio of described air/fuel ratio detecting apparatus is unusual big value;
The pump abnormity determining device is used to judge whether the value that applies the described rotating speed of voltage with respect on the described brushless motor is normal; And
The fuel system abnormity determining device, be used for when described fuel abnormity determining device judges that described air fuel ratio judges that for unusual big value and described pump abnormity determining device the value of described rotating speed is normal, judge that in described fuel pipe and the described fuel flow rate control unit at least one is unusual.
In the present invention, when judging air fuel ratio (air-fuel ratio) and when judgement tachometer value when being normal, can judge that in fuel pipe and the fuel flow rate control unit at least one is unusual for unusual big value.
Therefore, when using to the required air/fuel ratio detecting apparatus of control fuel injection amount, as long as at least one in fuel pipe and the fuel flow rate control unit is in abnormal state, just can detect by using the required rotational position detective device of startup for the control brushless motor.Therefore, when detecting fuel pipe except petrolift unusual, do not need the special fuel pressure transducer.
Advantageously, if be positioned at prespecified range, can judge that then petrolift is normal with respect to the value that applies the voltage rotating speed.Perhaps, if be positioned at outside the given range, can judge that then petrolift is in abnormal state with respect to the value that applies the voltage rotating speed.Therefore, when when applying the voltage tachometer value, can judge that petrolift is normal greater than the predetermined lower limit value.When less than the predetermined lower limit value, can judge that petrolift is in abnormal state.In addition, when with respect to applying the voltage tachometer value when excessive, can judge that it is in abnormal state.Therefore, can detect the normal state and the abnormal state of petrolift really.
Advantageously, judge when the fuel system abnormity determining device to exist when unusual, perhaps exist when unusual when the judgement of pump abnormity determining device that controller for motor stops the operation of brushless motor with the scheduled time, restarts brushless motor then.Owing to restart the pressure pulsation that petrolift will produce fuel once more, can expect that this pulsation can remove the foreign matter that is blocked in each parts.
Description of drawings
Fig. 1 shows the skeleton diagram according to the structure of the fuel system failure checking apparatus of the first embodiment of the present invention.
Fig. 2 shows the flow chart by as shown in Figure 1 ECU control.
Fig. 3 is the flow chart of control procedure that is used for the fuel system abnormality judging program of interpretation maps 2.
Fig. 4 shows the schematic representation of the figure that uses in the unusual determining program of fuel system as shown in Figure 2.
Fig. 5 is the flow chart that is used to explain the control procedure of fuel system failure checking apparatus according to a second embodiment of the present invention.
Fig. 6 is the flow chart that the pump that is used for interpretation maps 5 is restarted the control procedure of program.
Embodiment
A plurality of embodiment of the present invention is described below.
First embodiment
Fig. 1 shows according to the structure of first embodiment's fuel system failure checking apparatus and by the petrolift 30 of ECU (electronic control unit) 10 controls and the skeleton diagram of drive circuit 20.Petrolift 30 has brushless motor (brushless motor) 31 and pump portion 32.Pump portion 32 has the blower wheel 321 that is rotated by brushless motor 31, and fuel is introduced in the pump portion 32 to pressurize.Fuel pressure increases by pump portion 32, and fuel is discharged from petrolift 30.Carrying out pressure by pressure regulator 33 (fuel flow controller) regulates.Then, the fuel regulated by pressure regulator 33 of its pressure flows through fuel pipe 34.Fuel is supplied to sparger 50 (fuel flow controller), and this sparger 50 injects fuel in the suction air in the firing chamber of introducing motor (internal-combustion engine).
ECU 10 calculates the target emitted dose based on engine speed, throttle opening etc.The startup of ECU 10 control spargers 50, thus make the fuel injection amount that sprays from sparger 50 become the target emitted dose.And, be arranged in the exhaust passageway as the oxygen concentration sensor 40 of air/fuel ratio detecting apparatus, and the oxygen concentration checkout value is transfused to ECU 10.
Based on oxygen concentration sensor 40 detected oxygen concentration checkout values, ECU 10 detects the air fuel ratio A/F that will be drawn into the air-fuel mixture in the firing chamber.And ECU 10 calculates the correction factor FAF of the feedback compensation that is used to carry out the target emitted dose, thereby makes that detected air fuel ratio A/F can be near the air fuel ratio of stoichiometry (promptly desirable), and ECU 10 carries out air-fuel ratio feedback and proofreaies and correct and control.
That is to say, if the value of detected air fuel ratio A/F greater than stoichiometrical air fuel ratio, the value of correction factor FAF will be strengthened, and will carry out feedback compensation, thereby can increase fuel injection amount.On the other hand, if the value of detected air fuel ratio A/F less than stoichiometrical air fuel ratio, the value of correction factor FAF will diminish, and will carry out feedback compensation, thereby can reduce fuel injection amount.
In addition, the ECU 10 of the startup of controlling and driving circuit 20 by this way and drive circuit 20 are equivalent to one " controller for motor ".
Next, explain the method for detecting abnormality of ECU 10 with reference to Fig. 2-4.
Fig. 2 shows the flow chart of the control procedure of ECU 10.At first, in step S10, the mean value FAFAV that is used to carry out the correction factor FAF in each preset time of feedback compensation is calculated.Next, proceed to step S20, and judge that whether (determining) correction factor mean value FAFAV is more than or equal to setting value α.If FAFAV 〉=α (S20: be) then thinks and taken place in fuel system unusually, and actual fuel injection quantities has become less than the target emitted dose.And the value CFAFAL of fuel system faut detection counter adds " 1 ".
Next, proceed to step S40, and judge that whether CFAFAL is more than or equal to setting value β.If after fuel system takes place unusually, passed through more than preset time and CFAFAL 〉=β (S40: be), then carried out fuel system abnormality judging program S50 as shown in Figure 3.(S40: not), this processing procedure will turn back to step S10 if the value of CFAFAL has reached β.
And, in step S20, if (S20: not), the value of CFAFAL will be reset to 0 to FAFAV＜α, and processing procedure will turn back to step S10.
In addition, in step S20 and S40, when ECU 10 judged actual fuel injection amount whether less than the target emitted dose, ECU 10 was equivalent to one " fuel abnormity determining device ".
In fuel system abnormality judging program S50, in step S510, based on the rotational speed N EFP of the checkout value computing fuel pump 30 of Hall effect element 312.When ECU 10 calculated rotational speed N EFP, ECU 10 was equivalent to one " rotational speed computing device ".
Then, in step S520, detect the magnitude of voltage VBFP on the current coil 311 that is applied to brushless motor 31.
Here, when petrolift 30 normal operations, the relation between pump speed NEFP and the pump voltage value VBFP can be determined uniquely, shown in solid line among Fig. 4.And the scope that has enough and to spare with respect to solid line is by dotted line L1 among Fig. 4 and L2 institute restricted portion.If detected rotational speed N EFP and detected force value VBFP in by line L1 and L2 restricted portion, can judge then that petrolift 30 normally moves.If they are positioned at outside this scope, can judge then and in pump, take place unusually that wherein foreign matter is inhaled in the blower wheel 321.
Specifically, figure as shown in Figure 4 is stored among the ECU 10 in advance.In step S530, whether judge with respect to force value VBFP rotational speed N EFP greater than the lower limit γ that represents with line L2 and whether less than the CLV ceiling limit value δ that represents with line L1.(γ≤VBFP≤δ) (S530: be) then can think and take place unusually in pump 30, and judges that in step S540 the fuel system except petrolift 30 has taken place unusually to scope if rotational speed N EFP is positioned at.That is to say that judge that fuel system has taken place unusually, wherein at least one in fuel pipe 34, sparger 50 and the pressure regulator 33 stopped up by foreign matter.Then, in step S550, the fuel system of expression except petrolift 30 unusual code ALCODE=1 occurs and is output.
On the other hand, if rotational speed N EFP is positioned at (S530: not), then can judge and take place in the pump unusually outside the given range in step S560.In addition, be example unusually to take place in the pump, may relate to foreign matter and be inhaled in the blower wheel 321, produced packing (vapour locking), blower wheel 321 counter-rotatings etc.Then, in step S570, expression petrolift 30 unusual code ALCODE=2 occurs and is output.And, when each code ALCODE=1 of output and 2, be activated to vehicle crew's alarm or diagnostic lamp this exception reporting.According to code ALCODE is 1 or 2, reports abnormal conditions by the guide number that changes diagnostic lamp.
In addition, when ECU 10 carries out the control of step S10-S50 and step S510-S520 and judge in step S530 occurring in the petrolift 30 unusually or in the fuel system except pump the time, ECU 10 is equivalent to " pump abnormity determining device " and " fuel system abnormity determining device ".
According to first embodiment, when using control by the required oxygen concentration sensor 40 of the fuel injection amount of sparger 50, use the required Hall effect element 312 of startup of control brushless motor 31, can judge whether fuel system such as fuel pipe 34 except petrolift 30 and sparger 50 occur unusually.Therefore, when detecting fuel system except petrolift 30 unusual, do not need the fuel pressure sensor of special use.
Second embodiment
With reference to Fig. 5 and 6, below will explain control procedure according to second embodiment's fuel system failure checking apparatus.In addition, identical reference character is endowed the essentially identical treatment step part with first embodiment.And, identical according to the structure of second embodiment's fuel system failure checking apparatus with the structure of first embodiment shown in Fig. 1.And in the faut detection control according to second embodiment's fuel system failure checking apparatus, control content shown in Figure 2 is identical with first embodiment's control content.To no longer be repeated in this description below it.
According to second embodiment, in step S530, when rotational speed N EFP is positioned at outside the given range, judge that pump breaks down, ECU 10 temporarily stops the operation of brushless motor 31.After impeller 321 stops, restarting brushless motor, this is called as the control of restarting of pump.
As shown in Figure 5, after completing steps S550 and S570, program proceeds to step S580.In step S580, judge that whether code ALCODE=2 sets up, and shows promptly whether petrolift 30 breaks down.(S580: not), program turns back to step S10 when ALCODE=2 is false.When ALCODE=2 set up (S580: be), the pump shown in the execution graph 6 was restarted program S60.
Restart program S60 when beginning when pump, voltage no longer is applied on the coil 311, to stop the operation of petrolift 30.Then, pump stops counter CFPSTOP and starts, and judges in step S620 whether CFPSTOP is less than or equal to setting value μ.When stopping not pass through preset time and CFPSTOP≤μ (S620: be) as yet after coil 311 applies voltage, in step S630, pump stops counter CFPSTOP and adds " 1 ".
Then, if pump stop the value of counter CFPSTOP be not 0 (S640: not), will repeating step S620 and the processing of S630.After stopping voltage being applied on the coil 311 through behind the special time and CFPSTOP＞μ (S620: in the time of not), think that blower wheel 321 stops fully, restart coil 311 is applied voltage, and in step S650, restart petrolift.And in step S660, the value that pump stops counter CFPSTOP is reset to 0.Therefore, in step S640 subsequently, become certainty and judge, and processing procedure turns back to step S510.
According to second embodiment, when judging that in step S530 pump takes place when unusual, ECU 10 ends the rotation of brushless motors 31, and carries out pump restart control after impeller 321 stops.Owing to restart the pressure pulsation that fuel will take place petrolift 30 once more, can impel the foreign matter that stops up blower wheel 321 to be removed by this pulsation.
Other embodiments
According to each the foregoing description, whether be positioned at given range (γ≤VBFP≤δ), can judge whether abnormal conditions take place in petrolift 30 with respect to force value VBFP based on the checkout value of rotational speed N EFP.In current embodiment, (during VBFP≤δ), can judge abnormal conditions do not take place in petrolift 30 when the checkout value of rotational speed N EFP is less than or equal to the CLV ceiling limit value shown in the dotted line L1 among Fig. 4 with respect to force value VBFP.When greater than CLV ceiling limit value, can judge in petrolift 30 abnormal conditions have taken place.And, when the checkout value of rotational speed N EFP with respect to force value VBFP greater than Fig. 4 in the lower limit shown in the dotted line L2 (during γ≤VBFP), can judge abnormal conditions not take place in the petrolift 30.When less than lower limit, can judge in petrolift 30 abnormal conditions have taken place.
And, when vehicle is in following running state following time, it is desirable to, carry out the faut detection control shown in Fig. 2 to 6.That is to say, for example, it is desirable to, control when maintaining steady state value or engine-driving conditional stability in the time period of preset time when vehicle is surpassing with the speed of 40km/h operation preset time, accelerator opening.
And, can be applied on the two-wheel vehicles or four-wheel car that above-mentioned motor is installed on it according to the fuel system failure checking apparatus of each the foregoing description.
The invention is not restricted to the foregoing description, it also can be applied among various types of embodiments.
Claims (7)
1. fuel system failure checking apparatus comprises:
Petrolift, it has brushless motor and pump portion, and wherein said pump portion is rotated by described brushless motor, with pump fuel;
The rotational position detective device is used to detect the rotational position of described brushless motor;
Controller for motor is used for controlling described brushless motor based on the detected checkout value of described rotational position detective device;
The rotational speed computing device is used for calculating based on the detected checkout value of described rotational position detective device the rotating speed of described brushless motor;
Fuel pipe, it links to each other with described petrolift, with to the internal-combustion engine fueling;
The fuel flow rate control unit, it links to each other with described fuel pipe, and the control flow fuel;
Air/fuel ratio detecting apparatus is used for detecting the air fuel ratio of the air-fuel mixture that is drawn into internal-combustion engine;
The fuel abnormity determining device is used to judge whether the value of the detected air fuel ratio of described air/fuel ratio detecting apparatus is unusual big value;
The pump abnormity determining device is used to judge whether the value that applies the described rotating speed of voltage with respect on the described brushless motor is normal; And
The fuel system abnormity determining device, be used for when described fuel abnormity determining device judges that described air fuel ratio judges that for unusual big value and described pump abnormity determining device the value of described rotating speed is normal, judge that in described fuel pipe and the described fuel flow rate control unit at least one is unusual.
2. fuel system failure checking apparatus as claimed in claim 1 is characterized in that, when being positioned at prespecified range with respect to the described value that applies the described rotating speed of voltage, described pump abnormity determining device judges that described petrolift is normal.
3. fuel system failure checking apparatus as claimed in claim 1 or 2 is characterized in that, when being positioned at outside the prespecified range with respect to the described value that applies the described rotating speed of voltage, described pump abnormity determining device judges that described petrolift is unusual.
4. fuel system failure checking apparatus as claimed in claim 1, it is characterized in that described fuel flow rate control unit comprises and is used for injecting fuel into the airborne sparger of suction that sucks in the internal-combustion engine and regulates the pressure regulator of pressure of the fuel of discharging from described petrolift at least one.
5. fuel system failure checking apparatus as claimed in claim 1; it is characterized in that; judge when described fuel system abnormity determining device and to exist unusual or exist when unusual when described pump abnormity determining device judgement; described controller for motor stops the operation of described brushless motor with the scheduled time, restarts described brushless motor then.
6. fuel system failure checking apparatus as claimed in claim 1 is characterized in that, described air/fuel ratio detecting apparatus is made of the oxygen concentration detecting apparatus that detects the oxygen concentration of exhaust gases of discharging from described internal-combustion engine.
7. fuel system failure checking apparatus as claimed in claim 1 is characterized in that, based on the detected air fuel ratio of described air/fuel ratio detecting apparatus, at least one in fuel injection amount and the throttle opening is fed control.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP307736/2006 | 2006-11-14 | ||
| JP2006307736A JP2008121594A (en) | 2006-11-14 | 2006-11-14 | Fuel system abnormality detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101201035A true CN101201035A (en) | 2008-06-18 |
| CN101201035B CN101201035B (en) | 2010-06-09 |
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ID=39506604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101681715A Expired - Fee Related CN101201035B (en) | 2006-11-14 | 2007-11-13 | Fuel system fault detection device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008121594A (en) |
| CN (1) | CN101201035B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089464A (en) * | 2011-11-04 | 2013-05-08 | 三菱电机株式会社 | Fuel supply system |
| CN103732892A (en) * | 2011-08-15 | 2014-04-16 | 罗伯特·博世有限公司 | Method and device for operating an internal combustion engine |
| CN105041540A (en) * | 2014-04-17 | 2015-11-11 | 福特环球技术公司 | Methods for detecting high pressure pump bore wear |
| CN108140003A (en) * | 2015-10-02 | 2018-06-08 | 标致雪铁龙汽车股份有限公司 | The method that diagnosis is connected to the Electric Actuator of computer |
| CN109386416A (en) * | 2017-08-02 | 2019-02-26 | 大陆汽车电子(芜湖)有限公司 | Dry operating diagnostic system and method for fuel pump |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072036B (en) * | 2011-01-17 | 2013-01-16 | 吕国怀 | Method and device for controlling fuel-gas ratio of dual-fuel engine |
| JP5307851B2 (en) * | 2011-05-19 | 2013-10-02 | 三菱電機株式会社 | Engine fuel pump control device |
| JP5906637B2 (en) * | 2011-09-28 | 2016-04-20 | いすゞ自動車株式会社 | Foreign matter removal method and selective reduction catalyst system |
| JP7115210B2 (en) * | 2018-10-17 | 2022-08-09 | トヨタ自動車株式会社 | fuel supply controller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04284155A (en) * | 1991-03-12 | 1992-10-08 | Aisan Ind Co Ltd | Controller for motor-driven fuel pump |
| US5499538A (en) * | 1994-03-03 | 1996-03-19 | Ford Motor Company | On-board detection of fuel pump malfunction |
| JPH0932617A (en) * | 1995-07-13 | 1997-02-04 | Nissan Motor Co Ltd | Spark ignition internal combustion engine |
| JP2001342881A (en) * | 2000-05-29 | 2001-12-14 | Denso Corp | Abnormality sensing device for fuel supply system |
| JP2005248737A (en) * | 2004-03-01 | 2005-09-15 | Fuji Heavy Ind Ltd | Diagnostic device for fuel supply system |
-
2006
- 2006-11-14 JP JP2006307736A patent/JP2008121594A/en active Pending
-
2007
- 2007-11-13 CN CN2007101681715A patent/CN101201035B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103732892A (en) * | 2011-08-15 | 2014-04-16 | 罗伯特·博世有限公司 | Method and device for operating an internal combustion engine |
| CN103089464A (en) * | 2011-11-04 | 2013-05-08 | 三菱电机株式会社 | Fuel supply system |
| CN103089464B (en) * | 2011-11-04 | 2015-08-26 | 三菱电机株式会社 | Fuel supply system |
| CN105041540A (en) * | 2014-04-17 | 2015-11-11 | 福特环球技术公司 | Methods for detecting high pressure pump bore wear |
| CN108140003A (en) * | 2015-10-02 | 2018-06-08 | 标致雪铁龙汽车股份有限公司 | The method that diagnosis is connected to the Electric Actuator of computer |
| CN109386416A (en) * | 2017-08-02 | 2019-02-26 | 大陆汽车电子(芜湖)有限公司 | Dry operating diagnostic system and method for fuel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008121594A (en) | 2008-05-29 |
| CN101201035B (en) | 2010-06-09 |
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