CN1745008A

CN1745008A - Vehicle breakdown diagnostic system

Info

Publication number: CN1745008A
Application number: CN 200480003397
Authority: CN
Inventors: 金丸昌宣
Original assignee: Toyota Motor Corp
Current assignee: Toyota Motor Corp
Priority date: 2003-12-03
Filing date: 2004-11-11
Publication date: 2006-03-08
Anticipated expiration: 2024-11-11
Also published as: CN100436209C

Abstract

The vehicle data that detects in vehicle (10) is sent to information center (12), so that detection failure.When fault detection generated, information center (12) instruction vehicle was carried out fault recognition and is handled.Using the identification of carrying out position of fault when intercoming mutually.When the fault that is detected is when need recovering the fault of countermeasure, information center (12) instruction vehicle is carried out and is recovered to handle.When use intercoms mutually, carry out and recover to handle, so that eliminate the influence of this fault.

Description

Vehicle breakdown diagnostic system

Technical field

The present invention relates to a kind of vehicle breakdown diagnostic system, and more specifically, relate to a kind of vehicle that can intercom mutually and vehicle breakdown diagnostic system of information center of comprising.

Background technology

Known traditional system, for example disclosed by the open No.2002-73153 of Japanese Patent, the vehicle condition in the diagnosis vehicle, and if predict the possibility et out of order, then it transmits relevant information via communication facilities to service mechanism.Becoming at vehicle can not be before travels down, and this legacy system adopts Emergency Countermeasures or takes vehicle to service mechanism by the prompting user, makes can avoid because the inconvenience that vehicle trouble caused.

Yet top legacy system finishes car fault diagnosis in vehicle, and only communicates by letter with external agency when it transmits fault diagnosis result.For such situation, top legacy system need be with the complete required information storage of trouble diagnosing processing that is used at vehicle.

And if the fault of vehicle ' has taken place to influence, then Shang Mian legacy system provides information to external agency, no matter and whether the order of severity of this fault is low.When re-set target is to prevent that vehicle from becoming can not travel the time, if the order of severity of fault is low and vehicle can not be travelled at once that then vehicle needn't always transmit information to external agency.At this on the one hand, top legacy system has increased the load of the information processing of vehicle with there is no need.

Situation above the present invention has considered.The object of the present invention is to provide a kind of vehicle breakdown diagnostic system, it can take early stage countermeasure at vehicle trouble by setting up the communication between vehicle and the external agency, and can reduce vehicle-borne information processing load fully.

The open No.2002-202003 of Japanese Patent discloses a kind of system, and it is stored in chronological order about being in the information of the exterior learning value of stated limit, estimates institute's canned data, and the fault of notifying the user to take place.Above document also disclose a kind of being used for related data be sent to the vehicle dealer early stage response is provided the technology of prompting.

And the open No.2002-250248 of Japanese Patent discloses a kind of system, and it is diagnosing out anyly when unusual, and not only report should be unusual, and also utilization recovers control and stops this to spread unusually or enlarge.

Summary of the invention

Top purpose realizes that by a kind of vehicle breakdown diagnostic system it comprises the vehicle and the information center that can intercom mutually, and has feature as mentioned below.This system comprises: the vehicle data detecting device, and it is installed in the vehicle, to detect vehicle data; Failure detector, it is installed in the vehicle or in the information center, to detect vehicle trouble according to described vehicle data; Identification processing instruction device, it is installed in the information center, and seeking the generation of vehicle trouble, and the fault recognition that the instruction vehicle is carried out the cause that is used to discern vehicle trouble is handled; Identification processing execution device, it is installed in the vehicle, handles to carry out the fault recognition that is instructed; Identification result return mechanism, it is installed in the vehicle, turns back to information center with the result that described fault recognition is handled; The position of fault means of identification, it is installed in the information center, with the result who handles according to the described fault recognition that returns by vehicle, the identification position of fault; With identification trouble shooting device, it is installed in the information center, to take some countermeasures at the fault of being discerned.

Top purpose also realizes that by a kind of vehicle breakdown diagnostic system it comprises the vehicle and the information center that can intercom mutually, and has feature as mentioned below.This system comprises: the vehicle data detecting device, and it is installed in the vehicle to detect vehicle data; Failure detector, it is installed in the vehicle or in the information center, to detect vehicle trouble according to described vehicle data; Recovery processing instruction device, it is installed in the information center, and with the generation of searching vehicle trouble, and the instruction vehicle is carried out the recovery processing that is used to eliminate the vehicle trouble influence; Recover the processing execution device, it is installed in the vehicle, handles to carry out the recovery of being instructed; Determine device with handling, it is installed in the vehicle or in the information center, determines whether to continue other recovery with the result who handles according to described recovery and handle.

Top purpose further realizes that by a kind of vehicle breakdown diagnostic system it comprises the vehicle and the information center that can intercom mutually, and has feature as mentioned below.This system comprises: the fault characteristic value detection device, and it is installed in the vehicle, with the fault characteristic value of detection resources from the specific fault generation; Fault seriousness is determined device, is used for the value according to described fault characteristic value, the order of severity of definite described fault that is detected; With information restricting apparatus is provided, only be used for when the described order of severity surpasses judgment value, will offering information center about the detection information of described fault.

The accompanying drawing summary

Fig. 1 is the conceptual illustration that the formation of the first embodiment of the present invention has been described;

Fig. 2 has illustrated the trouble diagnosing scheme of carrying out in the situation of the fault of " degree 2 " and " degree 3 " or defective;

Fig. 3 is the diagram of circuit that the treatment step of being carried out respectively by vehicle, information center and dealer according to the notion of pointing out among Fig. 2 has been described;

Fig. 4 is the diagram of circuit that the representative type fault recognition processing of carrying out at the information center place has been described;

Fig. 5 has illustrated in the relation between AFM measurement air amount G a and the engine speed Ne under the benchmark loading condiction;

Fig. 6 has illustrated that ISC controlling quantity and AFM measure the relation between the air amount G a;

Fig. 7 is the typical flow figure that the recovery processing of carrying out at the information center place has been described;

Fig. 8 has illustrated the relation between engine speed Ne that measures under the identical loading condiction and vehicle ' distance in the idling process;

Fig. 9 illustrated in order to realize the function of the third embodiment of the present invention, the diagram of circuit of the treatment step of being carried out respectively by vehicle, information center and dealer;

Figure 10 has illustrated that AFM that the ISC aperture plays a major role when remaining unchanged measures the relation between air amount G a and the vehicle ' distance;

Figure 11 illustrated when having provided identical variation command value at the isc valve door, and (or AFM measures the relation of air amount G between a) for vehicle ' distance and the ISC aperture variable quantity that occurs in fiducial time;

Figure 12 is the diagram of circuit that the treatment step of carrying out in the fourth embodiment of the present invention has been described;

Figure 13 has illustrated and vehicle ' distance and isc valve door has stopped up sign (AFM that the ISC aperture plays a major role when remaining unchanged measures the relation of air amount G between a).

Realize best mode of the present invention

First embodiment

[formation of first embodiment]

Fig. 1 is the conceptual illustration that the formation of the first embodiment of the present invention has been described.As shown in Figure 1, comprise according to the system of first embodiment: vehicle 10, it is used by the user; Information center 12; With dealer 14, its double as vehicle service mechanism.As hereinafter described, this three can be via the mutual communication information of communication facilities.

Vehicle 10 comprises ECU (electronic control unit) 16, telltale 18 and communication facilities 20.ECU 16 is the unit that are used for control vehicle 10 states.It can read vehicle data and can drive multiple vehicle-mounted actr from multiple onboard sensor.

ECU 16 is connected to the telltale 18 in the compartment that is installed in vehicle.Telltale 18 not only presents multiple information to the chaufeur/passenger of vehicle, but also as interface, is used to allow chaufeur/passenger's input information of vehicle.ECU 16 is also connected to communication facilities 20.ECU 16 can be via communication facilities 20 with the devices exchange information that is installed in information center 12 and dealer 14 places.

Computer system 22 and communication facilities 24 are installed in information center 12 places.Similarly, computer system 26 and communication facilities 28 also are installed in dealer 14 places.These computer systems 22,26 can be via communication facilities 24,28 mutual exchange messages and with vehicle 10 exchange messages.

[according to the trouble diagnosing notion of first embodiment]

When recognizing the fault that is present in the vehicle 10 or defective, they are categorized as three different degree according to the system of present embodiment.Fault or the defective that its importance and emergency are minimum is called as " fault or the defective of " degree 1 " " hereinafter; Its importance and emergency become higher fault or defective is called as " fault or the defective of " degree 2 " " or " fault or the defective of " degree 3 " ".

(fault or the defective of " degree 1 ")

In the present embodiment, vehicle maintenance information is classified as " degree 1 ".More specifically, oily deterioration, bad, the low tire air pressure of oil, be necessary that changing of tire, low A/C gaseous tension, bad battery functi on, engine coolant shortage, pad shortage, lamp light failure and other similar faults or defective are classified as " degree 1 ".When the fault of " degree 1 " or defective take place, carry out on the car and handle, for example, light alarm lamp.In this case, finishing trouble diagnosing in vehicle handles.

(fault or the defective of " degree 2 ")

For example, unusual vibrations in the vehicle and bad fuel efficiency are classified as the fault or the defective of " degree 2 ".By for example, can detect unusual vibrations by vehicle-mounted acceleration pick-up.Compare with a reference value by the fuel discharge that (for example, when travelling when idling or under the constant speed of 40km/h) under the fixed reference condition played a major role, can detect bad fuel efficiency.

Top fault can not cause that vehicle stops immediately.Yet, conceivablely be that different with the fault of " degree 1 " etc., top fault may be caused unusually by any, and may bring sense of discomfort to vehicle.Therefore, when fault that detects " degree 2 " or defective, attempt to discern the fault that detected or the cause of defective according to the system of present embodiment, and identifying information is as a result offered dealer 14, make thus and can take early stage countermeasure at fault that is detected or defective.When identification during fault, make information center 12 carry out part identification according to the system of present embodiment and handle, be used to reduce the load on the ECU 10, allow ECU 10 and information center's 12 exchange messages simultaneously.

(fault or the defective of " degree 3 ")

In the present embodiment, cause that directly fault or the defective that vehicle stops to be classified as " degree 3 ".The fault or the defective as the sign of engine stall of more specifically, unusual engine speed Ne decline, acceleration disturbance, abnormal sound, unusual pinking, advancing ignition and other are classified as " degree 3 ".For example, the tachogen output according to generating in the idling process can detect unusual engine speed Ne and descend.By checking when choke valve aperture or aspirated air amount increase whether obtained suitable acceleration/accel, can detect acceleration disturbance.

For example, according to the output that is installed in the microphone in the engine room, can detect abnormal sound.More specifically, by making the output experience frequency analysis and the pattern-recognition of microphone, can be to generating the position of abnormal sound, that is, the abnormal sound source of sound positions.When being that present embodiment is identified as this abnormal sound the fault or the defective of " degree 3 " when having generated the abnormal sound with high sound pressure in the important miscellaneous part at body of the internal-combustion engine or for vehicle '.

Can detect unusual pinking by vibration sensor or cylinder pressure sensors.By cylinder pressure sensors, perhaps, can detect advancing ignition by between beginning of combustion timing and light-up plug discharge timing, carrying out gas current relatively.

Above can be used as will the become sign that can not travel and detected of vehicle unusually.When fault that in vehicle, detects " degree 3 " or defective, preferably, discern the cause of this fault or defective immediately, to carry out correct maintenance.When needs were transported to dealer 14 with vehicle 10, preferably, vehicle 10 can travel as much as possible.Therefore, when fault that detects " degree 3 " or defective, attempt to discern the cause of fault or defective according to the system of present embodiment, identifying information is as a result offered dealer 14, and in vehicle 10, carry out recovery routine, be used to eliminate fault or defect influence.When identification fault or defective and when carrying out recovery routine, make information center 12 carry out a part of necessary processing according to the system of present embodiment, be used to reduce the load on the ECU 10, allow ECU 10 and information center's 12 exchange messages simultaneously.

(vehicle 10, information center 12 and dealer's 14 effect)

Fig. 2 has summarized the trouble diagnosing scheme of carrying out in the situation of the fault of " degree 2 " or " degree 3 " or defective.To not be described in detail below about the fault of " degree 1 " or the trouble diagnosing of defective and handle, this is to finish in vehicle 10 because of it, and does not involve information center 12 and dealer's 14 specific function.

In vehicle 10, detect multiple vehicle data, its fault or defective with " degree 2 " and " degree 3 " is closely related.For example, by predetermined sampling timing, detect fuel injection time and the fuel injection rate be used for calculated fuel consumption (about the basic data of the problem of fuel efficiency of " degree 2 "), be used to judge the engine speed of engine stall (" degree 3 ") and be used to judge that the cylinder pressure sensors of unusual pinking (" degree 3 ") and advancing ignition (" degree 3 ") exports.These vehicle datas are sent to information center 12 from vehicle 10, as shown in Figure 2.

Information center 12 receives the vehicle data from vehicle 10, and analyzes this vehicle data, and is serious unusual to check, that is, and and the fault or the defective of " degree 2 " or " degree 3 ".For example, fuel discharge is judged whether along with the disappearance of time significantly increases by information center 12, and whether engine speed Ne descends unusually, and whether detects the cylinder pressure variation that causes according to this unusual pinking or advancing ignition by cylinder pressure sensors.

If do not recognize serious unusually at information center 12 places, then vehicle 10 repeatedly transmits vehicle datas to information center 12.On the other hand, if recognize serious unusually at information center 12 places, then 10 identifications of information center's 12 instruction vehicles should be unusual, i.e. the cause of fault.For example,, then require vehicle 10 to carry out predefined particular procedure, be used for determining that unusually whether this caused by the increase of the friction in combustion engine or some accessory equipment if engine speed Ne descends unusually.

Vehicle 10 is carried out the particular procedure of appointment, and the vehicle data that will generate as result subsequently is sent to information center 12 as diagnostic data.For example, be used for the pattern that the disgnosizing internal combustion engine friction increases, the combination of aspirated air amount Ga and engine speed Ne is sent to information center.In the pattern that the friction that is used for diagnosing each accessory equipment increases, play a major role before the accessory equipment operation and the accessory equipment operation after the aspirated air amount Ga that plays a major role and the combination of engine speed Ne be sent to information center 12.

According to the vehicle data that provides from vehicle 10, information center 12 judges whether to have discerned fault, promptly unusual cause.If it is still unrecognized that judged result is pointed out fault, then information center 12 sends instruction, is used for continuing to discern as possible fault.On the other hand, be identified, then will offer dealer 14 about the information of the fault discerned if judged result is pointed out fault.When receiving this information, dealer 14 takes early stage countermeasure at this fault.More specifically, the multiple action of dealer 14 beginning is such as, contact user and obtain the required part that is used to repair vehicle 10.

When having discerned fault, information center 12 judges whether the fault of being discerned is the fault or the defective of " degree 3 ", and it need carry out recovery routine.When the judged result that obtains pointed out that the fault of being discerned is the fault of " degree 3 " or defective, information center's 12 instruction vehicles 10 were carried out recovery routines.More specifically, friction increases if the fault of being discerned is combustion engine, and then information center's 12 instruction vehicles 10 increase the idling amount of air.On the other hand, if the fault of being discerned is the friction increase of accessory equipment, then information center's 12 instruction vehicles 10 increase the modified spatial tolerance that is used for the accessory equipment operation.And, if the fault of being discerned is advancing ignition or the other defect that is not easy to recovery in vehicle 10, then instruct the user immediately vehicle 10 to be taken to the dealer place, be used for recovery purposes.

[according to the details of the treatment step of first embodiment]

(all processing)

Fig. 3 is the diagram of circuit that the treatment step of being carried out respectively by vehicle 10, information center 12 and dealer 14 according to top notion has been described.As pointed in the diagram of circuit, the ECU 16 in the vehicle 10 detects a large amount of vehicle datas (step 100) about vehicle 10 states.Be sent to information center 12 (step 102) about the fault of " degree 2 " and " degree 3 " or the vehicle data of defective.

In step 110, the data that information center 12 receives from vehicle 10.Information center 12 is with in the data bank of data storage in computer system 22 that receives (step 112) then.More specifically, step 112 is performed and is used for not only storing the vehicle data that is transmitted, and also storage transmits the ID of the vehicle 10 of data.Next step is according to the up-to-date vehicle data that receives with before be stored in previous vehicle data in the data bank, the trouble diagnosing (step 114) in the execution vehicle 10.More specifically, judge whether to have occurred being classified as the fault or the defective of " degree 2 " and " degree 3 " one by one.

After the superincumbent diagnostic inspection, judge, be used for checking serious fault or the defective (step 116) of whether having found to belong to " degree 2 " or 3.If unidentified to serious fault or defective, then the computer system 22 at information center 12 places is returned the state of waiting for vehicle data.On the other hand, if recognize serious fault or defective, then information center 12 begins to carry out fault recognition processing (step 118).

When fault recognition was handled beginning, information center 12 at first instructed vehicle 10 to begin identification and handles.Next step, information center 12 selects pending identification to handle.Information center 12 has stored the fault that detected or defective with the relation between the identification treatment step of the cause that is used to discern the fault that detected or defective.Select pending identification to handle according to the relation of being stored.When having selected specific identification to handle in this mode, the vehicle data (being hereinafter referred to as " required diagnostic data ") of information center 12 subject to confirmation after vehicle 10 notices are used for the first pending processing of identifying purpose and finish first processing.

The recognition instruction (step 120) that vehicle 10 receives from information center 12, and begin to carry out the processing (step 122) that is used to obtain required diagnostic data subsequently.More specifically, the processing that vehicle 10 is carried out by information center's 12 appointments, and obtain particular vehicle data as a result, as required diagnostic data.In step 124, vehicle 10 is sent to information center 12 with required diagnostic data.Subsequently, vehicle 10 repeats treatment step 122 and finishes instruction (step 126) until receiving identification.

If when carrying out the fault recognition processing, vehicle 10 sends to information center 12 with required diagnostic data, whether then information center 12 writes down this required diagnostic data, be identified with failure judgement.Be used for fault recognition if judge to need carry out any further processing, then the information center 12 required diagnostic data notifying next pending processing and be associated to vehicle 10.When this instruction that receives from information center 12, vehicle 10 is carried out treatment steps 122 and 124, so that required diagnostic data is sent to information center 12.

When the required diagnostic data of writing down reception when information center 12 was finished fault recognition with deduction, information center 12 finished to vehicle 10 notice fault recognition.When receiving this notice, vehicle 10 is judged the condition of having set up step 126.As a result, fault recognition is handled and is all stopped in information center 12 and vehicle 10 places.And the back will be by providing the details that fault recognition is handled with reference to figure 4～6.

During fault (step 130) in having discerned vehicle 10, information center 12 at first will be sent to dealer 14 (step 132) about the information of identification fault.Next step, information center 12 judges whether the fault of being discerned is the fault or the defective of " degree 3 ", and it need carry out recovery routine (step 134).When the judged result that obtains is pointed out to need to carry out recovery routine, begin immediately to recover to handle (step 136).

Dealer 14 waits for, transmits the fault data of being discerned (step 140) until information center 12.During the fault data discerned receiving, dealer 14 is stored in the ID of vehicle 10 and the fault data discerned in the data bank in the computer system 26 (step 142).

Next step judges, and is used to check whether the fault of being discerned needs to carry out early stage countermeasure (step 144).If judged result points out need to carry out early stage countermeasure, dealer's 14 contact user (waiting via e-mail) then, and automatically send booking list and be used to change parts.

When (step 136) handled in the recovery on information center 12 places begin, information center 12 at first instructed vehicle 10 to begin to carry out recovery and handles.Next step, information center 12 selects pending specific recovery to handle.Relation between the fault that information center 12 storage is discerned and the recovery processing that is used to eliminate this fault effects.Select pending recovery to handle according to the relation of being stored.When having selected specific recovery to handle in this mode, the vehicle data (being hereinafter referred to as " recovering to confirm data ") of information center 12 subject to confirmation after vehicle 10 notices are used for the pending processing of recovery purposes and are recovering to finish dealing with.

When (step 150) instructed in the recovery above information center 12 sends, vehicle 10 recovered instruction according to this and carries out recovery routine (step 152).Then, obtain the specific vehicle data that after carrying out recovery routine, generates and confirm data as recovery.To confirm that data are sent to information center 12 (step 154) with the recovery that this mode is obtained from vehicle 10.Subsequently, vehicle 10 is repeatedly carried out treatment step 152, recovers to confirm instruction (step 156) until receiving.

In recovering the processing execution process, when recovering to confirm data when vehicle 10 transmits, information center 12 analyzes these data, has judged whether to eliminate the influence of fault.If judged result points out not eliminate the influence of fault, then information center's 12 instruction vehicles 10 continue to carry out recovery routine.When receiving this instruction, vehicle 10 is carried out treatment step 152 and 154, will recover to confirm that data are sent to information center 12.

When information center 12 writes down when recover confirming that data have been eliminated the influencing of fault to recognize, information center 12 recovers to be identified to vehicle 10 notices.When receiving this notice, vehicle 10 is judged the condition of having set up step 156.As a result, all stop in information center 12 and the recovery processing of vehicle 10 places.And the back will be by providing the details of recovering processing with reference to figure 7.

(processing of representative type fault recognition)

Fig. 4 is the diagram of circuit that the typical fault identification processing of carrying out at information center 12 places has been described.Fault recognition shown in Figure 4 is handled the unusual decline that relates to engine speed Ne.In the present embodiment, combustion engine is set to, and engine speed Ne can not drop to usually and is lower than 400rpm.Therefore, when detecting the engine speed Ne that is lower than 400rpm, present embodiment infers that engine speed Ne is unusual low.In this case, information center 12 carries out fault recognition and handles by following the step that being used to shown in Fig. 4 discern unusual cause.

In this diagram of circuit, although being taken as, unusual low engine speed Ne directly cause the defective of engine stall to be handled, directly cause the defective of engine stall to be not limited thereto.For example, cross torque output of combustion engine low or that detected by torque sensor when too small when the cylinder pressure that is detected by cylinder pressure sensors, present embodiment can recognize the defective that directly causes engine stall.

In fault recognition shown in Figure 4 is handled, at first begin to be used for determining whether (step 160) handled in unusual identification to engine load.More specifically, information center 12 requires the aspirated air amount Ga (airmoter of (when the A/C that applies load, alternating current generator, power steering and other accessory equipment (being hereinafter referred to as " accessory equipment ") are operated) under the vehicle 10 gauge reference target loading condictions; AFM measures amount of air) and engine speed Ne, and return measurement data (required diagnostic data).

Fig. 5 has illustrated that the AFM under the benchmark loading condiction measures the relation between air amount G a and the engine speed Ne.When load constant, in fact engine speed Ne depends on that AFM measures air amount G a.Therefore, as pointed among Fig. 5, can measure air amount G a with the normal relation between the engine speed Ne by pre-defined AFM.If the Ne that transmits as required diagnostic data was low with respect to the Ga that transmits simultaneously, then information center 12 infers that engine load is unusual.In this case, also begin the abnormality detection program of loading, be used to discern the purpose (step 162) of fault.

In load abnormality detection program, information center's 12 sequence requirement vehicles 10 one by one force to drive or stop accessory equipment, it is constant keeping air amount G a simultaneously, and will be after starting or stoping each accessory equipment and before between the engine speed that occurs change and be used as required diagnostic data and turn back to information center 12.When accessory equipment started or stoped independently, engine load changed, and had changed engine speed Ne thus.Information center's 12 storages are about the engine speed variable quantity of each accessory equipment, and engine speed variable quantity that relatively is transmitted as required diagnostic data and the value of being stored, in order to judge whether the load on each accessory equipment is suitable.

If found excessive engine speed variable quantity in any accessory equipment, then information center 12 infers that this accessory equipment is a fault.On the other hand, if all do not find fault in any accessory equipment, then information center 12 infers and exists excessive friction to increase in body of the internal-combustion engine or have problem about Power Train.When having located fault in this mode, as described previously, information center 12 sends identification to vehicle 10 and finishes instruction, and the fault recognition processing finishes thus.In addition, the information that provides about the fault of being discerned to user's (vehicle 10) and dealer 14 of information center 12.

If carry out in step 160 when identification is handled and do not find that engine load is unusual, then information center 12 begins to be used to check that the identification whether idling speed control valve door (isc valve door) stops up handles (step 164).More specifically, information center 12 requires vehicle 10 to measure ISC controlling quantity (valve opening or driving dutycycle) and AFM measures air amount G a, and take off data (required diagnostic data) is turned back to information center 12.

Fig. 6 has illustrated that ISC controlling quantity and AFM measure the relation between the air amount G a.At first, in fact to measure air amount G a proportional with AMF for the ISC controlling quantity, therefore, as pointed among Fig. 6, can be pre-defined their normal relation.If it is low excessively with respect to the ISC controlling quantity of returning simultaneously that the AFM that is returned as required diagnostic data measures air amount G a, then information center 12 infers that the isc valve door stops up (step 166).When having discerned fault in this mode, information center 12 sends identification to vehicle 10 and finishes instruction, and the fault recognition processing finishes thus.In addition, information center 12 is unusual and be necessary to clean or change the isc valve door to user's (vehicle 10) and dealer 14 notice isc valve doors.

If carry out in step 164 when identification is handled and do not find that the isc valve door stops up, then information center 12 begins to be used for checking the open circuit or the short circuited identification processing (step 168) of isc valve door.More specifically, information center 12 requires vehicle 10 to measure isc valve door terminal voltage and observed reading is used as required diagnostic data and turns back to information center 12.

If have open circuit or short circuit at the driving circuit that is used for the isc valve door, then ISC by-pass valve control terminal voltage is unusual.If the terminal voltage that returns as required diagnostic data obviously is different from predefined normal value, then information center 12 infers existence open circuit or short circuit (step 170) in the isc valve door.When having discerned fault in this mode, information center 12 sends identification to vehicle 10 and finishes instruction, and the fault recognition processing finishes thus.In addition, information center 12 notify user's (vehicle 10) and dealer 14 open circuits or short circuited isc valve door and be necessary to move the distribution inspection or change the isc valve door.

Top example hypothesis terminal voltage is measured, is used to check the open circuit/short circuit of isc valve door.Yet, the invention is not restricted to this open circuit/short circuit diagnostic method.Replacedly, by forcing to make whether the isc valve door operation is correct with the relation that check result ISC controlling quantity and AFM measure between the air amount G a, can carry out open circuit inspection.Another interchangeable determination methods is to check whether isc valve door terminal electric current is normal.

Do not find when identification is handled that the isc valve door is an open circuit or short circuited if carry out in step 168, then information center 12 begins to be used to check that the identification whether the isc valve door is stuck handles (step 172).More specifically, information center 12 requires vehicle 10 that isc valve door operation amount (aperture instruction) and actual aperture (jaw opening sensor output) are used as required diagnostic data and turns back to information center 12.

If the isc valve door is stuck, then it can not opened according to operational ton.If there is not correct relation between aperture of returning as required diagnostic data and operational ton, then information center 12 infers that ISC is stuck (step 174).When having discerned fault in this mode, information center 12 sends identification to vehicle 10 and finishes instruction, and the fault recognition processing finishes thus.In addition, information center 12 is stuck and is necessary to clean or change the isc valve door to user's (vehicle 10) and dealer's 14 notice isc valve doors.

Top example hypothesis, the isc valve door is equipped with jaw opening sensor.Yet if isc valve Men Wei is equipped with jaw opening sensor, AFM measures the alternative amount that air amount G a can be used as aperture, and can be as judging the basis whether the isc valve door is stuck.Above example also suppose, by determining that (or AFM measures air amount G and whether have correct static relation between a), checks the isc valve door that is stuck for isc valve gate control amount and aperture.Yet, the invention is not restricted to use this determination methods.Replacedly, by forcing to make the isc valve door operation to determine measuring between the variation of air amount G a whether have correct relation with aperture or AFM in the variation of controlling quantity as a result, can check the isc valve door that is stuck.

If carry out in step 172 when identification is handled and do not find that the isc valve door is stuck, then information center 12 infers that the isc valve door is normal.In this case, information center's 12 deductions are about the whole aspirated air system jams (step 176) of combustion engine.And information center 12 notifies in the whole aspirated air system to user's (vehicle 10) and dealer 14 and stops up and be necessary to clean or change airfilter.

As indicated above, when fault that detects " degree 2 " or " degree 3 " or defective, can discern fault as the cause of fault or defective according to the system of present embodiment, allow information center 12 with vehicle 10 exchange messages simultaneously.In this case, the main information that is used for fault recognition is handled 12 execution in information center.Therefore, reduced load on the ECU 16 in the vehicle 10 fully.As a result, provide such function, promptly be used to discern serious fault and do not need vehicle-mounted ECU 16 to have high processing capacity, and allowed dealer 14 or other external agencies to share information about fault according to the system of present embodiment.

(representative type recovers to handle)

As described previously, when the fault of being discerned was the fault of " degree 3 ", information center 12 carries out recovered to handle to eliminate the influence of this fault.Fig. 7 is the typical flow figure that the recovery processing of carrying out at information center 12 places has been described.Recovery shown in Fig. 7 is handled when finding that engine speed Ne is low unusually and is carried out.More specifically, Fig. 7 shows in the recovery processing of finding that engine speed Ne carries out when excessively reducing owing to the unusual increase of A/C load.

In recovery shown in Figure 7 is handled, at first send and be used to make the instruction (step 180) that increases scheduled volume about the correction recruitment of the aspirated air amount Ga of A/C operation to vehicle.In order to prevent engine speed Ne owing to the operation of A/C descends, vehicle 10 adds the A/C correction in basic aspirated air amount Ga in the A/C operating process.When receiving the instruction of sending in step 180, vehicle 10 is carried out the processing that is used to increase the A/C correction.As a result, present embodiment has suppressed the decline of engine speed Ne in the A/C operating process, no matter and whether the A/C load increases.

Next step, information center 12 judges that idling aspirated air amount is whether owing to the increase of above mentioned A/C correction surpasses ISC safety value (step 182).In vehicle 10, at idling aspirated air amount the ISC safety value is set, so that prevent from the idling process, to generate unnecessary height output.Therefore, when the aspirated air amount Ga that is instructed surpasses the ISC safety value owing to the increase of A/C correction,, therefore can not always satisfy the requirement that the A/C correction increases fully because actual intake air amount Ga is subjected to the restriction of safety value.

Therefore, when judging that idling aspirated air amount Ga will be above the ISC safety value, information center's 12 instruction vehicles 10 increase the ISC safety value as required, with prevent its by idling aspirated air amount Ga above (step 184).Therefore, in vehicle 10, in fact desired recruitment about the A/C correction can be reflected among the idling aspirated air amount Ga, and irrelevant with the existence of ISC safety value.

When instruction vehicle 10 increased the A/C correction, information center 12 also required vehicle 10 suitably to return the idle speed Ne that measures after the A/C correction increases.When receiving idle speed Ne, information center 12 writes down the idle speed Ne of reception, and judges whether engine speed Ne returns to normal value, that is, and and 400rpm or higher (step 186).

If the judged result that obtains points out that engine speed Ne does not return to normal value, then reprocessing step 180 reaches step subsequently, to increase the A/C correction once more.On the other hand, Ne returns to normal value if judged result is pointed out engine speed, and then execution in step 188, whether has kept the preset time cycle to judge normal engine speed value.

If the judged result that obtains points out normal engine speed value and do not keep the preset time cycle, reprocessing step 186 then.If the judged result that obtains after this treatment step repeats is pointed out normal engine speed value and has been kept the preset time cycle; then the 12 checking engine speed Ne of information center revert to normally, and notify this engine speed normalisation (step 190) to vehicle 10.As a result, vehicle 10 is recognized and is recovered to handle termination (refer step 156).

Engine speed Ne is excessive descent when A/C load excessively increases not only, when also the load on other accessory equipment increases, when the body of the internal-combustion engine friction increases and the obstruction of isc valve door, open circuit, short circuit or when being stuck, and excessive descent.In the situation that load on the accessory equipment except A/C increases,, engine speed Ne is returned to normally, the situation when increasing as the load on the A/C by increasing modified spatial tolerance.In the situation that the body of the internal-combustion engine friction increases,, engine speed Ne is returned to normally by increasing basic aspirated air amount.And, in the obstruction of isc valve door, open circuit, short circuit or situation about being stuck, by utilizing other amount of air control conveniences that together use with the isc valve door, such as electronics choke valve or power steering amount of air by-pass valve control, regulate required amount of air, can eliminate the influence of this fault.This means, when detecting the engine speed excessive descent, by according to the fault of being discerned, carry out suitable recovery and handle,, can recover correct engine speed Ne to adopt above mentioned countermeasure according to the system of present embodiment.

Present embodiment carry out to recover handle institute at the fault of " degree 3 " or the excessive descent that defective not only comprises above mentioned engine speed Ne, also comprise acceleration disturbance, abnormal sound, pinking and advancing ignition unusually.For acceleration disturbance,,, can eliminate its influence by amount of air being increased to feasible degree for the problem that the aspirated air quantity not sufficient causes.By revising timing of ignition, can eliminate the influence of unusual pinking.As indicated above, when when revising controlling quantity in the vehicle 10 and can eliminate influencing of fault, carry out the program that is used to eliminate fault effects according to the system of present embodiment, handle as recovering.If recover to handle the influence (for example, advancing ignition) that can not eliminate fault by carrying out in vehicle 10, then the system's execution according to present embodiment is used to notify the user to be necessary to obtain at the service mechanism place immediately the program of service, handles as recovering.

As indicated above, make vehicle 10 can discern fault according to the system of present embodiment, this fault is the major failure that meets with in vehicle 10 or the cause of defective (fault or the defective of " degree 2 " or " degree 3 ").And if the fault of being discerned is emergency (fault of " degree 3 "), then the system according to present embodiment carries out the recovery processing immediately on vehicle 10, to eliminate the influence of this fault.Therefore, preventing effectively according to the system of present embodiment that vehicle 10 from becoming can not be in travels down.

Permission information center of system 12 according to present embodiment carries out main processing (identification is handled) that is used to discern fault and the main processing (recovering processing) that is used to eliminate the influence of the fault of discerning.As a result, provide outstanding advantage recited above according to the system of present embodiment, and need on vehicle-mounted ECU 16, not execute extra heavy load.

In the above among first embodiment of Miao Shuing, information center 12 carries out according to vehicle data and is used for detecting the fault of " degree 2 " or " degree 3 " or the trouble diagnosing of defective is handled (step 114).Yet, the invention is not restricted to the execution that this trouble diagnosing is handled.Replacedly, vehicle 10 can be carried out that trouble diagnosing is handled and only will be sent to information center 12 about the fault that detected or the information of defective.

Above-described first embodiment makes information center 12 remain identification treatment step that order is carried out, that be used to discern the cause of the fault that detected or defective to vehicle 10 notice, and the required diagnostic data that vehicle 10 will be obtained is sent to information center 12 in proper order.Yet, the invention is not restricted to use this method.A kind of alternative is, make information center 12 that the starting point of the series of processing steps of pending, as to be used to discern the fault that detected or defective cause only be arranged to vehicle 10 notice, allow vehicle 10 to carry out follow-up treatment step, until finishing fault recognition, and make vehicle 10 only will be sent to information center 12 about the information of the fault discerned.

When carry out to recover handling when eliminating the influencing of the fault discerned, the treatment step that above-described first embodiment makes information center 12 remain the order execution to vehicle 10 notices, and output is sent to information center 12 in proper order after making vehicle 10 with result's processing.Yet, the invention is not restricted to use this method.A kind of alternative is information center 12 only to be notified at the first pending recovery treatment step of having of identification fault to vehicle 10, and allow vehicle 10 to carry out the after-treatment steps, until finishing recovery.

Second embodiment

Now will be once more by describing the second embodiment of the present invention with reference to figure 3.The second embodiment of the present invention can pass through to use the identical hardware with about first embodiment to constitute realization.The previous system of describing according to first embodiment unconditionally handles as the unusual engine speed decline of the fault of " degree 3 " or defective, acceleration disturbance, abnormal sound, unusual pinking and advancing ignition, and these are signs of engine stall.

Yet for example, when engine speed Ne dropped to the degree that is lower than 400rpm slightly unusually, driving engine was with unlikely stall immediately.In other words, when engine speed Ne drops to about 400rpm unusually, not always to be necessary to take urgent countermeasure.Handle if carry out fault recognition in this case immediately or recover, then the load on ECU 16 or the computer system 22 unnecessarily increases.

Also there is identical problem for acceleration disturbance, abnormal sound and unusual pinking.These faults or defective needn't always be identified as the fault or the defective of " degree 3 ".On the contrary, these faults or defective should be judged as classifies the order of severity, therefore, only there are serious fault or defective should be classified as the fault or the defective of " degree 2 " or " degree 3 ", excessively increase so that prevent the load on ECU 16 and the computer system 22.And, only there are the most serious fault or defective should be classified as the fault or the defective of " degree 3 ", so that limit about the object of fault recognition control with about recovering the object of control.

For such situation, according to the system of present embodiment the excessive descent of engine speed Ne is categorized as three different degree, only when Ne＜200rpm it being used as " degree 3 " handles, when 200rpm≤Ne＜300rpm, it is used as " degree 1 " and handles, when 300rpm≤Ne＜400rpm, it is used as " degree 1 " and handles.Present embodiment also will speed up fault, abnormal sound and unusual pinking and is categorized as three different degree.More specifically, present embodiment is used as the most serious fault as the fault handling of " degree 3 ", moderate fault is used as the fault handling of " degree 2 ", and least serious fault is used as the fault handling of " degree 1 ".

Under the superincumbent environment, acceleration disturbance depends on the rangeability of the acceleration/accel or the car speed of detection, is classified as three different degree.Abnormal sound depends on the part that is identified as the abnormal sound source of sound and depends on the acoustic pressure degree, is classified as three different degree.Unusual pinking is depended on by the knock intensity of detections such as detonation sensor, is classified as three different degree.Yet, always advancing ignition should be identified as emergency, no matter and its intensity how.Therefore, present embodiment always is identified as advancing ignition the fault or the defective of " degree 3 ".

In order to realize above-described function, in step 102 shown in Figure 3, the vehicle data that makes ECU 16 in the vehicle 10 only will be classified as " degree 2 " or " degree 3 " according to above mentioned definition according to the system of present embodiment is sent to information center 12.Simultaneously, the step 116 shown in computer system 22 execution graphs 3 at information center 12 places is a major failure in order to fault or the defect recognition that only will belong to " degree 2 " or " degree 3 " according to top definition.In step 134, the computer system 22 at information center 12 places is abideed by top definition, and only the fault recognition of " degree 3 " is carried out the fault of recovery routine for needs.

Therefore, even when excessive descent that recognizes engine speed Ne or unusual pinking,, then will save information exchange between vehicle 10 and the information center 12 according to the system of present embodiment if it is classified as the fault of " degree 1 ".If this fault is identified as the fault of " degree 2 ", then the system according to present embodiment carries out the fault recognition processing, recovers processing but stop to carry out.As a result, the calculated load that is applied on ECU 16 and the computer system 22 by the system according to present embodiment is lighter than the calculated load that is applied by the system according to first embodiment.

The 3rd embodiment

Now by describing the third embodiment of the present invention with reference to figure 8～11.According to the system of the 3rd embodiment is that the ECU 16 that comprises in the hardware according to first embodiment constitutes and computer unit 22,26 are carried out back by the treatment step described with reference to figure 9 but not realize during the treatment step of pointing out among Fig. 3.

Some vehicle data 10 that in vehicle 10, detects be subjected to occurring in the combustion engine etc. because the influence of the variation that efflux causes.For example, the engine speed Ne that plays a major role under the firm demand condition is relevant with the increase/minimizing of combustion engine friction.Fig. 8 has illustrated the relation between engine speed Ne that measures under the identical loading condiction and vehicle ' distance in the idling process.

Usually, the friction of combustion engine reduces along with the increase of driving engine break-in degree.Therefore, in little operating range zone, the engine speed Ne shown in Fig. 8 tends to increase pro rata with the distance of travelling.When multiple parts wore and tore considerably owing to the operating range that increases, engine speed Ne began to descend along with the increase of resistance to motion.

For engine idle speed Ne, there is lower limit, it is necessary for guaranteeing that combustion engine keeps steady running.NG degree shown in Fig. 8 is represented this lower limit.When having pre-determined about the lower limit of engine speed Ne and having grasped engine speed, can estimate that actual Ne value arrives NG degree remaining operating range before with respect to the decline tendency of operating range.Present embodiment makes information center 12 estimate this remaining operating ranges, and estimated result is used as maintenance information about vehicle 10.

Fig. 9 illustrated in order to realize top function, the diagram of circuit of the treatment step of being carried out respectively by vehicle 10, information center 12 and dealer 14.As pointed among the figure, the ECU 16 in the vehicle 10 judges whether to have set up benchmark idling mode (step 200).This benchmark idling mode is defined as the state of idling under the fixing actually load of combustion engine.More specifically, preferably, alternating current generator produces constant load, stops other accessory equipment simultaneously.When the benchmark idling mode had been set up in judgement, vehicle 10 was sent to information center 12 (step 202) with the engine speed Ne of current detection.

The engine speed data (step 210) that information center 12 receives from vehicle 10, and subsequently with in the data bank of this data storage in computer system 22 (step 212).More specifically, this database storing the engine speed Ne that transmitted and transmit the ID of the vehicle 10 of data.Next step according to up-to-date engine speed Ne and the previous engine speed Ne that is stored in the data bank, calculates the current tendency (step 214) that relevant engine speed changes.

Then, judge, whether pointed out the decline tendency (step 216) of engine speed Ne to determine result of calculation.If the judged result that obtains is not pointed out the decline tendency of engine speed Ne, infer that then engine speed Ne can not drop to the NG degree.Therefore, when the pre-processing termination.On the other hand, if the judged result that obtains points out that engine speed Ne tends to descend, then according to engine speed Ne with respect to the slope of operating range and predefined about engine speed the NG value (for example, 400rpm), calculation engine speed Ne arrives NG degree remaining operating range (step 218) before.Then the operating range that calculates is sent to vehicle 10 and dealer 14 (step 220).

NG information (operating range) (step 230) above vehicle 10 receives by information center's 12 transmission, and carry out the chaufeur/passenger who is used for to vehicle 10, the i.e. processing (step 232) of user's presentation information subsequently.

Simultaneously, dealer 14 receives NG information (step 240), and subsequently with the ID of vehicle 10 and the data of reception, promptly sets up NG state remaining operating range before, is stored in the data bank in the computer system 26 (step 242).Next step, dealer 14 carries out the processing that is used for automatically taking early stage countermeasure, is used for, and for example, sends a message to user's (waiting via e-mail) and sends about being used to change the order (step 244) of parts.

As described above, can be according to the system of present embodiment by monitoring the variation of engine speed in the benchmark idling mode, pre-estimate vehicle 10 become can not travel before remaining operating range.And can make information center 12 carry out for this estimation according to the system of present embodiment is necessary main processing.As a result, realized being used to predicting the major failure of vehicle 10 and taked the function of early stage measure, can on ECU16, not apply big load simultaneously at this fault according to the system of present embodiment.

Above-described the 3rd embodiment has predicted remaining operating range before increase causes the NG state because combustion engine rubs.Yet the object that is used to predict is not limited to this operating range.A kind of interchangeable object that is used to predict can be, sets up remaining operating range before the NG state owing to the fault in the isc valve door or accessory equipment friction increase.Hereinafter, a kind ofly be used for predicting, as the explanation of the representative type modification of the 3rd embodiment because the fault of isc valve door is set up the NG state method of remaining operating range before with describing.

Figure 10 has illustrated that AFM that the ISC aperture plays a major role when remaining unchanged measures the relation between air amount G a and the vehicle ' distance.As pointing out among Figure 10, after the isc valve door began to become obstruction, under identical ISC aperture, AFM measured amount of air and tends to reduce.Therefore, when monitoring the tendency that reduces, can predict driving engine because the isc valve door that stops up and remaining operating range before the stall.

Figure 11 illustrated when having provided identical variation command value at the isc valve door, and (or AFM measures the relation of air amount G between a) at vehicle ' distance and the ISC aperture variable quantity that occurs in fiducial time.When the response of isc valve door just often, the normal variable quantity that ISC aperture and AFM measure air amount G a appearred in superincumbent fiducial time.Yet, the obstruction if the isc valve door begins to become, the response variation of isc valve door, in fiducial time, the variable quantity that ISC aperture and AFM measure air amount G a is too small thus.Therefore, by the variable quantity that monitors that the ISC aperture occur and AFM measure air amount G a in fiducial time, can predict because the isc valve door that stops up causes remaining operating range before the engine stall.

In the above among the 3rd embodiment of Miao Shuing, remaining operating range before the NG state is being set up in the prediction of information center 12 places.Yet, the invention is not restricted to use this method.Replacedly, vehicle 10 can be predicted operating range, and only the operating range of predicting is sent to information center 12.

The 4th embodiment

Now the fourth embodiment of the present invention will be described.When meeting with the fault of " degree 3 ", previous first and second embodiment that describe carry out recovery routine so that fault influence minimum.For example, if A/C overload (referring to Fig. 7), then first and second embodiment carry out recovery routine, are used for increasing when A/C is operated the correction recruitment about aspirated air amount Ga, perhaps increase the ISC safety value.Want reformed above-mentioned correction recruitment, ISC safety value and other parameter will be called as " recovery parameter " hereinafter in order to carry out recovery routine.

When having repaired the fault of " degree 3 " that met with, do not need to carry out recovery routine.In other words, the recovery parameter value that changes in order to carry out recovery routine is an off-square after repairing vehicle.When dealer 14 has repaired when having carried out the fault of recovery routine at it, it is its initial value that the 4th embodiment makes dealer 14 will recover parameter resetting.

More specifically, in the present embodiment, suppose when carrying out " battery empties " program, to recover parameter and be not reset to its initial value, and when dealer 14 when ECU 16 has provided the particular outer input, the recovery parameter is reset to its initial value.And, in this embodiment, historical and other the situation that relates to repair of malfunction that ECU16 record parts change.

When after carrying out recovery routine, having repaired fault, allow dealer 14 correctly will recover parameter resetting according to the system of present embodiment and arrive its initial value, as described above.Therefore, correctly avoided such situation according to the system of present embodiment, what promptly the recovery parameter value of keeping owing to mal caused can not exercise correct control after repair of malfunction.

The 5th embodiment

Now the fifth embodiment of the present invention is described by reference Figure 12.When the ECU 16 that comprises in the formation shown in Figure 1 and computer unit 22,26 carried out the treatment step of back by describing with reference to Figure 12, realized system according to the 5th embodiment.

Being used for the vehicular components characteristic changes in dimension limit usually.For the parts that need pin-point accuracy control, should revise when the part replacement about the control operation of these parts, so that meet the characteristic of the parts of new installation.Therefore, in the system according to present embodiment, vehicle 10, information center 12 and dealer's 14 exchange data necessary are so that realize required function.

Figure 12 has illustrated in order to realize top function, the diagram of circuit of the treatment step that present embodiment is carried out.According to the program shown in Figure 12, changing vehicle component (step 250) afterwards, dealer 14 is sent to information center 12 with particular number, the characteristic data of parts and the particular number of affected vehicle of the parts of replacing.The data of these transmission are called as " replacing data " hereinafter.

Term " characteristic data " refers to represent exactly change the data of the I/O characteristic of parts.For example, if changed the isc valve door, then as the characteristic of the measured aperture relative flow speed of the isc valve door of changing parts as characteristic data, be sent to information center 12.

When the replacing data that receive from dealer 14 (step 260), information center 12 is recorded in (step 262) in the data bank with these data.Next step, information center 12 reads with the relevant information of vehicles (step 264) of the control of the parts of changing from data bank.Should be noted that the information of vehicles of reading offers information center 12 by vehicle 10 in advance via communication link here, or (step 270) that provide according to the request from information center 12 as required.

According to replacing data that provided by dealer 14 and the information of vehicles that provided by vehicle 10, information center 12 calculates and is used for the parts of changing are exercised the accurately matching value (step 266) of control.When having calculated matching value, information center 12 is sent to vehicle 10 (step 268) with the matching value that calculates.

When the matching value that receives from information center 12, vehicle 10 is carried out set handlings, is used for guaranteeing that this matching value is reflected to control (step 280 and 282).As described above, when changing the parts of vehicle 10, the matching value of the characteristic that is matched with the replacing parts can be set in vehicle 10 according to the system of present embodiment.Therefore, allow the control of vehicle 10 parts that pin-point accuracy ground enforcement is immediately changed after part replacement according to the system of present embodiment.

Among the 5th embodiment of Miao Shuing, when calculating matching value, information center 12 also uses information of vehicles in the above.Yet, the invention is not restricted to use this method.Replacedly, can calculate matching value only based on the replacing data that transmit by dealer 14 about the parts of changing.

The 6th embodiment

Now the sixth embodiment of the present invention is described by reference Figure 13.In previous the 3rd embodiment that describes, failure symptom in the vehicle 10 detects according to the multiple information that is provided by vehicle 10 in information center 12, and prediction vehicle 10 become remaining before can not travelling may operating range.For example, if detect the sign of the isc valve door of obstruction, then information center 12 writes down this sign, and prediction isc valve door is failed remaining possible operating range before the true(-)running.When having calculated possible operating range, information center 12 offers vehicle 10 and dealer 14 with this computing value, with the prevention vehicle trouble.

Figure 13 has illustrated and vehicle ' distance and isc valve door has stopped up sign (AFM that the ISC aperture plays a major role when remaining unchanged measures the relation of air amount G between a).As pointed among Figure 13, when the isc valve door stopped up, when the ISC aperture remained unchanged, AFM measured air amount G a and tends to reduce.The tendency that reduces is somebody's turn to do in system monitoring according to the 3rd embodiment, and prediction is because the isc valve door that stops up causes engine stall remaining operating range before.

Figure 13 has illustrated the situation that the isc valve door was changed by new isc valve door before stopping up fully, as pointed among Figure 13, when the parts (being the isc valve door in this case) changed as the fault cause, vehicle 10 become can not travel before remaining possible operating range should reset inevitably (being set to maxim).Therefore, when having changed at dealer 14 places when calculating the parts of cause that may operating range, according to the system of the present embodiment data of all relevant possible operating ranges of resetting.

More specifically, the information of being handled by vehicle 10, information center 12 and dealer 14 about the possibility operating range is reset when changing parts.More specifically, do not reset, but when the ECU 16 to dealer 14 places has provided the particular outer input, reset by " battery empties " by the possible operating range information that vehicle 10 is handled.The information of being handled by information center 12 is reset when the communication that receives from the dealer.

According to top program, in the present embodiment, when repairing the parts of the possible operating range cause of conduct calculating, can correctly reset is derived from the set information about possible operating range of deterioration parts.As a result, the system according to present embodiment correctly prevents to keep unreasonably after the possible operating range information that is provided with before the replacing parts is being changed parts.

Feature of the present invention and effect can be summarized as follows.

A first aspect of the present invention meets a kind of vehicle breakdown diagnostic system, and it comprises can be mutual Vehicle and the information centre of communication, this vehicle breakdown diagnostic system comprises: vehicle data detects dress Put, it is installed in the vehicle to detect vehicle data; Failure detector, it is installed in vehicle In or in the information centre, to detect vehicle trouble according to described vehicle data; The identifying processing instruction Device, it is installed in the information centre, with the generation of searching vehicle trouble, and the instruction vehicle Carrying out the Fault Identification that is used for identification vehicle trouble cause processes; The identifying processing actuating unit, its Be installed in the vehicle, process with the Fault Identification of carrying out institute's instruction; The identifying processing result returns dress Put, it is installed in the vehicle, turns back to information centre with the result that described Fault Identification is processed; The abort situation recognition device, it is installed in the information centre, with according to what returned by vehicle The result that Fault Identification is processed, the identification abort situation; With identification trouble shooting device, its installation In information centre, to take some countermeasures for the fault of being identified.

A second aspect of the present invention meets the car fault diagnosis system according to first aspect present invention System, wherein said identification trouble shooting device comprises the Recovery processing command device, is used for the instruction car Execution is used for eliminating the Recovery processing of the fault effects of identifying, and this vehicle breakdown diagnostic system advances One step comprised: the Recovery processing actuating unit, it is installed in the vehicle, to carry out the extensive of institute's instruction The multiple processing; With process to determine device, it is installed in the vehicle or in the information centre, with according to institute The result who states Recovery processing determines whether to continue other Recovery processing.

A third aspect of the present invention meets the car fault diagnosis system according to second aspect present invention System, wherein said Recovery processing command device comprises: catastrophe failure storage device is used for depositing Store up the most serious fault; With recovery object restraint device, being used for is in the fault that detects only During one of serious fault, send be used to the instruction of carrying out described Recovery processing.

A fourth aspect of the present invention meets any one vehicle breakdown diagnostic system according to first～third aspect of the present invention, and wherein said identification processing instruction device comprises: the major failure memory storage is used to store serious fault; With the identifying object restraint device, only be used for when the fault that is detected is serious, send and be used to carry out the instruction that described fault recognition is handled.

A fifth aspect of the present invention meets a kind of vehicle breakdown diagnostic system, and it comprises the vehicle and the information center that can intercom mutually, and this vehicle breakdown diagnostic system comprises: the vehicle data detecting device, and it is installed in the vehicle to detect vehicle data; Failure detector, it is installed in the vehicle or in the information center, to detect vehicle trouble according to described vehicle data; Recovery processing instruction device, it is installed in the information center, and with the generation of searching vehicle trouble, and the instruction vehicle is carried out the recovery processing that is used to eliminate the vehicle trouble influence; Recover the processing execution device, it is installed in the vehicle, handles to carry out the recovery of being instructed; Determine device with handling, it is installed in the vehicle or in the information center, determines whether to continue other recovery with the result who handles according to described recovery and handle.

A sixth aspect of the present invention meets the vehicle breakdown diagnostic system according to fifth aspect present invention, and wherein said recovery processing instruction device comprises: major failure memory storage is used to store the most serious fault; With recover the object restraint device, only be used for when the fault that is detected is one of the most serious fault, send and be used to carry out the instruction that described recovery is handled.

A seventh aspect of the present invention meets a kind of vehicle breakdown diagnostic system, it comprises the vehicle and the information center that can intercom mutually, this vehicle breakdown diagnostic system comprises: the fault characteristic value detection device, and it is installed in the vehicle, with the fault characteristic value of detection resources from the specific fault generation; Fault seriousness is determined device, is used for the value according to described fault characteristic value, the order of severity of definite described fault that is detected; With information restricting apparatus is provided, only be used for when the described order of severity surpasses judgment value, will offering information center about the detection information of described fault.

A eighth aspect of the present invention meets the vehicle breakdown diagnostic system according to seventh aspect present invention, this system further comprises: recover the processing instruction device, it is installed in the information center, carry out the recovery processing that is used to eliminate described fault effects with the instruction vehicle, the information of this fault is provided by vehicle; Recover the processing execution device, it is installed in the vehicle, handles to carry out the recovery of being instructed; Determine device with handling, it is installed in the vehicle or in the information center, determines whether to continue other recovery with the result who handles according to described recovery and handle.

A ninth aspect of the present invention meets the vehicle breakdown diagnostic system according to eighth aspect present invention, the wherein said information that provides information restricting apparatus that the characteristic value that comprises described fault is provided to information center, as information about described fault, and wherein said recovery processing instruction device comprises the emergency judgment means, it is when the information that is provided by vehicle about described fault, according to the characteristic value of described fault, judge whether this fault should be identified as emergency; With recover the object restraint device, only be used for when described fault is urgent, send and be used to carry out the instruction that described recovery is handled, the information of this fault is provided by vehicle.

A tenth aspect of the present invention meets any one vehicle breakdown diagnostic system according to the 7th～the 9th aspect of the present invention, this system further comprises: identification processing instruction device, it is installed in the information center, carry out the fault recognition processing that is used to discern described fault cause with the instruction vehicle, the information of this fault is provided by vehicle; Identification processing execution device, it is installed in the vehicle, handles to carry out the fault recognition that is instructed; Identification result return mechanism, it is installed in the vehicle, turns back to information center with the result that described fault recognition is handled; With the position of fault means of identification, it is installed in the information center, with the result who handles according to the described fault recognition that returns by vehicle, and the identification position of fault.

A eleventh aspect of the present invention meets any one vehicle breakdown diagnostic system according to first～the tenth aspect of the present invention, wherein said fault recognition is handled and is comprised a plurality of checking modes, and wherein said position of fault means of identification comprises: the identification device of finishing dealing with, and it determines that fault recognition finishes dealing with can be according to the fault recognition result identification position of fault returned by vehicle the time; Handle the continuation device with identification, it makes the checking mode of described identification processing instruction device instruction startup corresponding to this result in the time can not discerning position of fault according to described result.

A twelveth aspect of the present invention meets any one vehicle breakdown diagnostic system according to first～the tenth one side of the present invention, this system further comprises: the fault distance estimation unit, it is installed in the vehicle or in the information center, to estimate in the vehicle remaining operating range before the et out of order according to described vehicle data; And, the fault distance read out instrument, remaining described operating range is presented at telltale to be used for taking place fault before, and perhaps the fault distance conveyer is used for described operating range is sent to vehicle maintenance factory.

According to a first aspect of the invention, vehicle can receive from instruction information center, that handle about fault recognition in the identification vehicle during cause of detected fault.Therefore, according to the present invention, vehicle needn't store pending fault recognition treatment step at single failure.As a result, the information processing that can reduce on the vehicle is loaded.

According to a second aspect of the invention, after the fault of identification as the defective cause, vehicle can be carried out the recovery of the influence that is used to eliminate this fault onboard and handle.In this case, vehicle can receive from instruction information center, about there being pending recovery to handle.Therefore, according to the present invention, vehicle needn't store pending recovery treatment step at single failure.As a result, the information processing that can reduce on the vehicle is loaded.

According to a third aspect of the invention we, only carrying out recovery when detecting one of the most serious fault handles.Therefore, the present invention can make the possibility minimum that generates at the processing load that recovers processing execution.

According to a forth aspect of the invention, only carrying out fault recognition when detecting major failure handles.Therefore, the present invention can make the possibility minimum at the processing load generation of fault recognition processing execution.

According to a fifth aspect of the invention, when detecting fault, vehicle can be carried out the recovery of the influence that is used to eliminate this fault onboard and handle.In this case, vehicle can receive from instruction information center, about there being pending recovery to handle.Therefore, according to the present invention, vehicle needn't store pending recovery treatment step at single failure.As a result, the information processing that can reduce on the vehicle is loaded.

According to a sixth aspect of the invention, only carrying out recovery when detecting one of the most serious fault handles.Therefore, the present invention can make the possibility minimum that generates at the processing load that recovers processing execution.

According to a seventh aspect of the invention, can judge whether detected fault is urgent on vehicle based on the fault characteristic value.When the emergency of fault is low, can skip the processing that is used for the information about this fault is offered information center, when having high emergency even this fault is the fault of countermeasure immediately.As a result, the present invention can avoid unnecessary communication, to reduce the processing load on the vehicle effectively.

According to an eighth aspect of the invention, when in vehicle, having the specific fault of big fault characteristic value, allow the vehicle execution to be used to eliminate the recovery processing of this fault effects.In this case, vehicle can receive from instruction information center, about there being pending recovery to handle.Therefore, according to the present invention, vehicle needn't store pending recovery treatment step at single failure.As a result, the information processing that can reduce on the vehicle is loaded.

According to a ninth aspect of the invention, providing in the situation of failure message to information center, only when fault is urgent, carrying out and recover to handle by vehicle.Therefore, the present invention can make the possibility minimum that generates at the processing load that recovers processing execution.

According to the tenth aspect of the invention, when in vehicle, detecting fault, discern the cause of this fault with big fault characteristic value.In this case, vehicle can receive from instruction information center, that handle about fault recognition.Therefore, according to the present invention, vehicle needn't store pending fault recognition treatment step at single failure.As a result, the information processing that can reduce on the vehicle is loaded.

According to an eleventh aspect of the invention, vehicle can be carried out the fault recognition processing that comprises a plurality of checking modes.Therefore, the present invention can correctly discern such fault, i.e. its identification needs to carry out complicated processing.

According to a twelfth aspect of the invention, can estimate in the vehicle to take place before the expection fault remaining operating range and be presented at estimated valve in the vehicle or send it to and safeguard factory.Therefore, the invention enables and before fault takes place, to take suitable early stage measure.

In previous first embodiment that describes, when carrying out treatment step 100, realized by vehicle 10 " vehicle data detecting device " according to a first aspect of the invention; When carrying out treatment step 114, information center 12 realized " failure detector " according to first aspect present invention; When carrying out treatment step 118, information center 12 realized " identification processing instruction device " and " position of fault means of identification " according to first aspect present invention; When carrying out treatment step 122, realized by vehicle 10 " identification processing execution device " according to first aspect present invention; When carrying out treatment step 124, realized by vehicle 10 " identification result return mechanism " according to first aspect present invention; And carry out treatment step 130～136 in information center 12 and o'clock realized " identification trouble shooting device " according to first aspect present invention.

In previous first embodiment that describes, carry out treatment step 134 and realized " recovering the processing instruction device " and " handle and determine device " according to a second aspect of the invention at 136 o'clock in information center 12; And when carrying out treatment step 152, realized by vehicle 10 " recovering the processing execution device " according to second aspect present invention.

In previous first embodiment that describes, realized " major failure memory storage " and " recovering the object restraint device " according to a third aspect of the invention we when carrying out treatment step 134 in information center 12.

In previous first embodiment that describes, realized " major failure memory storage " and " identifying object restraint device " according to a forth aspect of the invention when carrying out treatment step 116 in information center 12.

In previous first embodiment that describes, when carrying out treatment step 100, realized by vehicle 10 " vehicle data detecting device " according to a fifth aspect of the invention; When carrying out treatment step 114, information center 12 realized " failure detector " according to fifth aspect present invention; Carry out treatment steps 134 and realized " recovering the processing instruction device " and " handling definite device " at 136 o'clock in information center 12 according to fifth aspect present invention; And when carrying out treatment step 152, realized by vehicle 10 " recovering the processing execution device " according to fifth aspect present invention.

In previous first embodiment that describes, realized " major failure memory storage " and " recovering the object restraint device " according to a sixth aspect of the invention when carrying out treatment step 134 in information center 12.

In previous first embodiment that describes, the treatment step of in information center's 12 execution graphs 4, pointing out 162,166,170,174 or realized according to an eleventh aspect of the invention " identification finish dealing with device " at 176 o'clock; And when condition is not set up in judgement in step 160,164,168 and 172, realized " identification is handled and continued device " according to an eleventh aspect of the invention.

In previous second embodiment that describes, acceleration/accel that plays a major role in the engine speed Ne that plays a major role in the situation of the excessive descent of engine speed, the situation in acceleration disturbance and changes in vehicle speed, the microphone output that generates in the situation that abnormal sound generates, the knock intensity that plays a major role in the situation of unusual pinking or the like are corresponding to " fault characteristic value "; When detecting the fault characteristic value in step 100, realized ECU 16 " fault characteristic value detection device " according to seventh aspect present invention; And when carrying out treatment step 102, realized ECU 16 " fault seriousness is determined device " and " information restricting apparatus is provided " according to seventh aspect present invention.

In previous second embodiment that describes, carry out treatment steps 134 and realized " recovering the processing instruction device " and " handling definite device " at 136 o'clock according to eighth aspect present invention in information center 12; And when carrying out treatment step 152, realized by vehicle 10 " recovering the processing execution device " according to eighth aspect present invention.

In previous second embodiment that describes, realized " emergency judgment means " and " recovering the object restraint device " according to ninth aspect present invention when carrying out treatment step 134 in information center 12.

In previous second embodiment that describes, " identification processing instruction device " and " position of fault means of identification " have been realized when carrying out treatment step 118 according to tenth aspect present invention in information center 12; When carrying out treatment step 122, realized by vehicle 10 " identification processing execution device " according to tenth aspect present invention; And when carrying out treatment step 124, realized by vehicle 10 " identification result return mechanism " according to tenth aspect present invention.

In previous the 3rd embodiment that describes, realized according to the present invention " the fault distance estimation unit " aspect the 12 when carrying out treatment step 218 in information center 12; When carrying out treatment step 232, realized by vehicle 10 " the fault distance read out instrument " aspect the 12 according to the present invention; And realized according to the present invention " the fault distance conveyer " aspect the 12 when carrying out treatment step 220 in information center 12.

Claims

1. vehicle breakdown diagnostic system, it comprises the vehicle and the information center that can intercom mutually, this vehicle breakdown diagnostic system comprises:

The vehicle data detecting device, it is installed in the vehicle, to detect vehicle data;

Failure detector, it is installed in the vehicle or in the information center, to detect vehicle trouble according to described vehicle data;

Identification processing instruction device, it is installed in the information center, and with the generation of searching vehicle trouble, and the instruction vehicle is carried out the fault recognition processing that is used to discern the vehicle trouble cause;

Identification processing execution device, it is installed in the vehicle, handles to carry out the fault recognition that is instructed;

Identification result return mechanism, it is installed in the vehicle, turns back to information center with the result that described fault recognition is handled;

The position of fault means of identification, it is installed in the information center, with the result who handles according to the described fault recognition that returns by vehicle, the identification position of fault; With

Identification trouble shooting device, it is installed in the information center, to take some countermeasures at the fault of being discerned.

2. the vehicle breakdown diagnostic system of claim 1, wherein said identification trouble shooting device comprise and recover the processing instruction device, and the recovery that is used to instruct vehicle to carry out and is used to eliminate the influence of the fault of being discerned is handled, and this vehicle breakdown diagnostic system further comprises:

Recover the processing execution device, it is installed in the vehicle, handles to carry out the recovery of being instructed; With

Handle and determine device, it is installed in the vehicle or in the information center, determines whether to continue other recovery with the result who handles according to described recovery and handle.

3. the vehicle breakdown diagnostic system of claim 2, wherein said recovery processing instruction device comprises:

Major failure memory storage is used to store the most serious fault; With

Recover the object restraint device, only be used for when the fault that is detected is one of the most serious fault, send and be used to carry out the instruction that described recovery is handled.

4. any one vehicle breakdown diagnostic system of claim 1～3, wherein said identification processing instruction device comprises:

The major failure memory storage is used to store serious fault; With

The identifying object restraint device only is used for when the fault that is detected is serious, sends to be used to carry out the instruction that described fault recognition is handled.

5. vehicle breakdown diagnostic system, it comprises the vehicle and the information center that can intercom mutually, this vehicle breakdown diagnostic system comprises:

Recovery processing instruction device, it is installed in the information center, and with the generation of searching vehicle trouble, and the instruction vehicle is carried out the recovery processing that is used to eliminate the vehicle trouble influence;

6. the vehicle breakdown diagnostic system of claim 5, wherein said recovery processing instruction device comprises:

Major failure memory storage is used to store the most serious fault; With

7. vehicle breakdown diagnostic system, it comprises the vehicle and the information center that can intercom mutually, this vehicle breakdown diagnostic system comprises:

The fault characteristic value detection device, it is installed in the vehicle, with the fault characteristic value of detection resources from the specific fault generation;

Fault seriousness is determined device, is used for the value according to described fault characteristic value, the order of severity of definite described fault that is detected; With

Information restricting apparatus is provided, is used for only when the described order of severity surpasses judgment value, will offering information center about the detection information of described fault.

8. the vehicle breakdown diagnostic system of claim 7 further comprises:

Recover the processing instruction device, it is installed in the information center, carries out the recovery processing that is used to eliminate described fault effects with the instruction vehicle, and the information of this fault is provided by vehicle;

9. the vehicle breakdown diagnostic system of claim 8, the wherein said information restricting apparatus that provides provides the information that comprises described fault characteristic value to information center, as information about described fault, and wherein said recovery processing instruction device comprises the emergency judgment means, it is when the information that is provided by vehicle about described fault, according to the characteristic value of described fault, judge whether this fault should be identified as emergency; With recover the object restraint device, only be used for when described fault is urgent, send and be used to carry out the instruction that described recovery is handled, the information of this fault is provided by vehicle.

10. any one vehicle breakdown diagnostic system of claim 7～9 further comprises:

Identification processing instruction device, it is installed in the information center, carries out the fault recognition processing that is used to discern described fault cause with the instruction vehicle, and the information of this fault is provided by vehicle;

Identification result return mechanism, it is installed in the vehicle, turns back to information center with the result that described fault recognition is handled; With

The position of fault means of identification, it is installed in the information center, with the result who handles according to the described fault recognition that returns by vehicle, the identification position of fault.

11. any one vehicle breakdown diagnostic system of claim 1～10, wherein said fault recognition is handled and is comprised a plurality of test modes, and wherein said position of fault means of identification comprises: the identification device of finishing dealing with, and it determines that fault recognition finishes dealing with can be according to the fault recognition result identification position of fault returned by vehicle the time; Handle the continuation device with identification, it makes the checking mode of described identification processing instruction device instruction startup corresponding to this result in the time can not discerning position of fault according to described result.

12. any one vehicle breakdown diagnostic system of claim 1～11 further comprises:

The fault distance estimation unit, it is installed in the vehicle or in the information center, to estimate in the vehicle remaining operating range before the et out of order according to described vehicle data; And

The fault distance read out instrument, remaining described operating range is presented at telltale to be used for taking place fault before, and perhaps the fault distance conveyer is used for described operating range is sent to vehicle maintenance factory.