CN104834302A - On-board emission diagnosis system, vehicle and method - Google Patents
On-board emission diagnosis system, vehicle and method Download PDFInfo
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- CN104834302A CN104834302A CN201410734846.8A CN201410734846A CN104834302A CN 104834302 A CN104834302 A CN 104834302A CN 201410734846 A CN201410734846 A CN 201410734846A CN 104834302 A CN104834302 A CN 104834302A
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 158
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 208000028659 discharge Diseases 0.000 claims description 167
- 238000002405 diagnostic procedure Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 6
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000009711 regulatory function Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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Abstract
The invention discloses an on-board emission diagnosis system, a vehicle and a method. The on-board emission diagnosis system comprises a sensor unit and a control unit. The sensor unit is used to detect the emission-related parts, and is used to acquire the detection information. The control unit is connected with the sensor unit, and is used to receive the detection information, and is used to diagnose the emission state of the vehicle according to the detection information, when the detection information is capable of satisfying the diagnosis condition. The control unit is also used to count the times of satisfying the own working requirements of each of the emission-related parts according to the detection information, and is used to count the diagnosis times of each of the emission-related parts, and is used to calculate the actual diagnosis rate of each of the emission-related parts according to the above mentioned times of satisfying the own working requirements and the diagnosis times. The on-board emission diagnosis system is advantageous in that the users can be aware of the frequency of the on-board emission diagnosis system diagnosing each of the emission-related parts according to the actual diagnosis rate.
Description
Technical field
The present invention relates to vehicle electric field, particularly, relate to a kind of vehicle-mounted discharge diagnostic system, vehicle and method.
Background technology
Along with the quick growth of automobile pollution, environmental pollution is day by day serious, Abgasgesetz increasingly stringent.Vehicle-mounted discharge diagnostic system is more and more widely used a kind of system of monitoring motor vehicle exhaust emission on automobile in recent years.This system can monitor the operation conditions of engine and the duty of exhaust gas aftertreatment system, when failures are detected, failure message can be preserved by this vehicle-mounted discharge diagnostic system, when failure message confirm after, emergency warning lamp (MIL) or check engine (Check Engine) emergency warning lamp bright.Further, can read relevant information with the form of diagnostic trouble code by the scanning display apparatus of standard, according to the prompting of diagnostic trouble code, maintenance personal can determine character and the position of fault.
But, from current vehicle-mounted discharge diagnostic system, user is difficult to understand this vehicle-mounted discharge diagnostic system in certain time and, to the concrete diagnosis situation (number of times of diagnosis) of each discharge associated components, is also difficult to the frequency (embodying the rationality that number of times diagnosed by vehicle in long-time running) that understanding vehicle-mounted discharge diagnostic system is diagnosed each discharge associated components.Especially, when emergency warning lamp (MIL) or when checking that engine (Check Engine) lamp is not bright, user does not also know it is that discharge associated components does not really have fault or vehicle-mounted discharge system just not to carry out diagnosis to these discharge associated components at all.
And when vehicle travels in special road conditions for a long time, owing to not meeting predetermined conditions for diagnostics, vehicle-mounted discharge diagnostic system did not likely all carry out diagnosis to discharge associated components in the multiple driving cycle of continuous print.Therefore, when the operation conditions of vehicle does not reach predetermined conditions for diagnostics for a long time, existing vehicle-mounted discharge diagnostic system can not meet the requirement of monitoring discharge capacity and detection failure in time, thus affects the control of vehicular discharge.
Summary of the invention
The object of this invention is to provide a kind of vehicle-mounted discharge diagnostic system can monitoring actual diagnosis.
To achieve these goals, the invention provides a kind of vehicle-mounted discharge diagnostic system, this system comprises: sensor unit, for detecting discharge associated components, and obtains Detection Information; And control module, be connected with described sensor unit, for receiving described Detection Information, and when described Detection Information meets conditions for diagnostics, diagnose according to the emission status of described Detection Information to vehicle, wherein said control module is also for adding up the number of times that each discharge associated components meets self job requirement according to described Detection Information, add up the number of times that each discharge associated components is diagnosed, and calculate the actual diagnosis of each discharge associated components according to the number of times of the described number of times and described diagnosis that meet self job requirement.
Preferably, described control module also for: when adding up each discharge associated components and meeting the number of times of the number of times of self job requirement and described diagnosis, respectively the upper limit is arranged to the increment of number of times during each driving cycle of the described number of times and described diagnosis that meet self job requirement of each discharge associated components.
Preferably, the number of times meeting self job requirement described in each discharge associated components that described control module is added up is the number of times meeting self job requirement under the condition meeting the basic driving demand of vehicle.
Preferably, described control module also for: statistics meets the number of times of the basic driving demand of vehicle, further, meet the difference that the number of times of the basic driving demand of vehicle and a discharge associated components meet the number of times of self job requirement under the condition meeting the basic driving demand of vehicle determine that this discharge correlator does not reach the number of times of self job requirement according to this.
Preferably, the described actual diagnosis of each discharge associated components is the number of times of the described diagnosis of this discharge associated components and the described ratio meeting the number of times of self job requirement.
Preferably, described control module is also for being transferred to scanning display apparatus by described Detection Information and diagnostic message, wherein, described diagnostic message comprises the described of each discharge associated components and meets the number of times of self job requirement, the number of times of described diagnosis and described actual diagnosis; This system also comprises: described scanning display apparatus, is connected with described control module, for receiving described Detection Information and described diagnostic message from described control module and showing.
Preferably, described control module also for: when exist carry out multichannel diagnosis for multiple characteristics of a discharge associated components, select that actual diagnosis minimum for numerical value in multiple actual diagnosis corresponding for the described multichannel diagnosis in this discharge associated components is transferred to described scanning display apparatus and show.
Preferably, described control module is also for being transferred to warning device by described Detection Information and diagnostic message, wherein, described diagnostic message comprises the described of each discharge associated components and meets the number of times of self job requirement, the number of times of described diagnosis and described actual diagnosis; This system also comprises: described warning device, is connected with described control module, for reporting to the police according to the described Detection Information received and described diagnostic message.
Preferably, described control module also for: when described actual diagnosis is lower than a predetermined diagnosis threshold value, the described conditions for diagnostics of adjustment, makes described actual diagnosis higher than described diagnosis threshold value automatically.
The present invention also provides a kind of vehicle comprising above-mentioned vehicle-mounted discharge diagnostic system.
The present invention also provides a kind of vehicular discharge diagnostic method, and the method comprises: detect discharge associated components, and obtain Detection Information; When described Detection Information meets conditions for diagnostics, diagnose according to the emission status of described Detection Information to vehicle; Add up the number of times that each discharge associated components meets self job requirement; Add up the number of times that each discharge associated components is diagnosed; And the actual diagnosis of each discharge associated components is calculated according to the number of times of the described number of times and described diagnosis that meet self job requirement of each discharge associated components.
Pass through technique scheme, in vehicle-mounted discharge diagnostic system of the present invention, the number of times of the number of times and diagnosis that meet self job requirement of each discharge associated components is added up, calculate the actual diagnosis (number of times such as diagnosed and the ratio of number of times meeting self job requirement) of each discharge associated components, thus make user can understand the speed of vehicle-mounted discharge diagnostic system to the frequency that each discharge associated components is diagnosed by this actual diagnosis.And, certain diagnosis number of times can be ensured in the effective scope of diagnosis for the adaptive threshold regulatory function of conditions for diagnostics in vehicle-mounted discharge diagnostic system of the present invention, thus make user can find fault as soon as possible, and effectively can control the discharge of vehicle.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structured flowchart of the vehicle-mounted discharge diagnostic system provided according to one embodiment of the present invention;
Fig. 2 is the process flow diagram of the statistics strategy provided according to one embodiment of the present invention;
Fig. 3 is the process flow diagram of the statistics strategy provided according to another embodiment of the present invention;
Fig. 4 is the process flow diagram of the statistics strategy provided according to another embodiment of the invention;
Fig. 5 is the structured flowchart of the vehicle-mounted discharge diagnostic system provided according to another embodiment of the present invention;
Fig. 6 is the structured flowchart of the vehicle-mounted discharge diagnostic system provided according to another embodiment of the invention;
Fig. 7 is the process flow diagram of the vehicular discharge diagnostic method provided according to one embodiment of the present invention; And
Fig. 8 is the process flow diagram of the vehicular discharge diagnostic method provided according to another embodiment of the present invention.
Description of reference numerals
100 vehicle-mounted discharge diagnostic system 101 sensor unit 102 control modules
103 scanning display apparatus 104 warning devices
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is the structured flowchart of the vehicle-mounted discharge diagnostic system provided according to one embodiment of the present invention.As shown in Figure 1, vehicle-mounted discharge diagnostic system 100 can comprise sensor unit 101 and control module 102.Sensor unit 101 may be used for detecting discharge associated components, and obtains Detection Information.Control module 102 is connected with sensor unit 101, may be used for receiving Detection Information, and when this Detection Information meets conditions for diagnostics, diagnoses according to the emission status of this Detection Information to vehicle.Wherein, control module 102 can also be used for adding up according to Detection Information the number of times that each discharge associated components meets self job requirement, add up the number of times that each discharge associated components is diagnosed, and calculate the actual diagnosis of each discharge associated components according to the number of times of this number of times and diagnosis meeting self job requirement.
Wherein, discharge associated components be device closely-related with the discharge capacity of vehicle, discharge associated components such as can comprise following in one or more: catalyst converter, lambda sensor, vapo(u)rization system and variable valve timing system of engine etc.
Sensor unit 101 can be the combination of multiple sensor, and the plurality of sensor can be respectively used to detect multiple discharge associated components and other vehicle conditions and obtain Detection Information.Sensor unit 101 such as can comprise air inlet temperature/pressure sensor, phase detector, air flowmeter, detonation sensor, cooling-water temperature sensor, front lambda sensor, post oxygen sensor, speed probe, acceleration transducer, tank pressure sensing device etc.Detection Information such as can comprise intake air temperature and pressure, phase place, air mass flow, water temperature, rotating speed, acceleration, tail gas oxygen content, tank pressure etc.The Detection Information detected can be sent to control module 102 by sensor unit 101.
Control module 102 receives above-mentioned Detection Information, and when these Detection Information meet conditions for diagnostics (namely meeting respective threshold value respectively), diagnoses according to the emission status of Detection Information to vehicle.This diagnosis can comprise to be tested the Wuli-Shili-Renli system approach etc. of various discharge Primary Component, and test result and Detection Information are stored and compared with respective reference value.The fault (such as, relevant to this discharge associated components), the speed of a motor vehicle, working time, dead time, temperature etc. represented by non-fault code such as can be comprised to the conditions for diagnostics diagnosed of discharge associated components.
Control module 102 also meets the number of times of self job requirement for adding up each discharge associated components according to Detection Information, and adds up the number of times diagnosed each discharge associated components.For convenience, hereinafter, a discharge associated components meets " the first specific denominator " of the number of times also referred to as this discharge associated components of self job requirement, discharges " molecule " of the number of times also referred to as this discharge associated components of associated components diagnosis to one.The statistic processes of the first specific denominator and molecule is specifically described below in conjunction with Fig. 2.
Fig. 2 is the process flow diagram of the statistics strategy provided according to one embodiment of the present invention.
Wherein, in order to compare with the number of times of igniting, preferably, when adding up each discharge associated components and meeting the number of times of the number of times of self job requirement and diagnosis, the number of times of self job requirement is met to each discharge associated components described and the increment of the number of times of diagnosis during each driving cycle arranges the upper limit respectively.Namely, can the number of times added up at most in once light a fire (i.e. a driving cycle) be arranged in control module 102.In this embodiment, this upper limit is once.It will be appreciated by persons skilled in the art that a driving cycle refers to that vehicle is from starting to a flame-out process.
As shown in Figure 2, in vehicle-mounted discharge diagnostic system 100 of the present invention, statistics strategy can comprise:
(1) judging whether to light a fire and whether have quenching fault, being judged as lighting a fire, there is no quenching fault, and when igniting counting does not increase in current driving cycle, igniting is counted and adds one;
(2) be judged as lighting a fire, and when quenching fault, judge whether a discharge associated components meets self job requirement, meeting self job requirement, and when the first specific denominator counting does not increase in current driving cycle, make the first specific denominator counting add one; And
(3) be judged as lighting a fire, and when there is no quenching fault, judging whether to meet conditions for diagnostics, meeting conditions for diagnostics, and when current driving cycle Middle molecule counting does not increase, making numerator counts add one.
For example, in this embodiment, statistics igniting was counted as 42 (indicating 42 driving cycles), and first of this lambda sensor the specific denominator is counted as 42, numerator counts is 20, then illustrate that, during 42 driving cycles, this lambda sensor meets self job requirement at least one times in each driving cycle, wherein have and meet diagnosis requirement for 20 times and trigger diagnosis.
Wherein, self job requirement of a discharge associated components such as can comprise the fault (such as, relevant to the diagnosis of this discharge associated components), working time, temperature, the speed of a motor vehicle etc. represented by non-fault code.For specifically discharging associated components, self job requirement can also comprise the particular requirement (this discharge associated components should meet the requirement performing its function) of this discharge associated components itself, such as, self job requirement of variable valve timing system of engine can comprise number of times or the time of the function execution such as this variable valve timing system of engine unlatching, closedown.
Fig. 3 is the process flow diagram of the statistics strategy provided according to another embodiment of the present invention.With the embodiment of Fig. 2 unlike, in the embodiment of Fig. 3, be judged as lighting a fire, and when quenching fault, first judge whether to meet the basic driving demand of vehicle, under the prerequisite meeting the basic driving demand of vehicle, then judge whether to meet self job requirement.
Namely, in this embodiment, the number of times that each discharge associated components that control module 102 is added up meets self job requirement is the number of times meeting self job requirement under the condition meeting the basic driving demand of vehicle.Wherein, the basic driving demand of vehicle such as can comprise environment temperature, pressure, dead time, the speed of a motor vehicle and running time etc.
As mentioned above, under the statistics meeting self job requirement is based upon the condition meeting the basic driving demand of vehicle, more strictly can be limited within the category that vehicle normally runs by meeting the condition of the first specific denominator like this, thus making statistics more reasonable, the actual diagnosis calculated is more meaningful.
Fig. 4 is the process flow diagram of the statistics strategy provided according to another embodiment of the invention.The embodiment of Fig. 4 is on the basis of the embodiment of Fig. 3, has also added up the number of times (being also called " general denominator ") meeting the basic driving demand of vehicle.Meanwhile, in this embodiment, the upper limit of denominator general during each driving cycle is also set as once.Namely as in Fig. 4, meeting the basic driving demand of vehicle, and when general denominator counting does not increase in current driving cycle, general denominator is being counted and adds one.
Like this, the difference that the number of times that can meet the basic driving demand of vehicle according to described and a discharge associated components meet the number of times of self job requirement under the condition meeting the basic driving demand of vehicle determines that this discharge associated components does not reach the number of times of self job requirement.
Such as, the general denominator of statistics is counted as 42, and first of variable valve timing system of engine the specific denominator is counted as 41, then illustrate that the number of times that this variable valve timing system of engine has the functions such as the fault represented by diagnostic trouble code (relevant to its diagnosis) or unlatching to perform does not reach requirement therebetween.
After obtaining a discharge associated components and meeting the number of times of self job requirement and the number of times of diagnosis, the number of times of number of times and diagnosis that control module then can meet self job requirement according to this calculates the actual diagnosis of this discharge associated components.Below describe the computing method of actual diagnosis in detail.
Actual diagnosis in vehicle-mounted discharge diagnostic system 100 of the present invention can be through repeatedly driving cycle after long-term accumulated, reflect the physical quantity of frequency speed to each discharge associated components diagnosis.Wherein, when judging the speed to the frequency diagnosed of discharge associated components, the number of times that this discharge associated components meets self job requirement can provide the reference of contrast for the number of times of diagnosis.
Particularly, in the statistics strategy that the embodiment of Fig. 2 provides, the actual diagnosis of each discharge associated components can be the number of times (molecule) of the diagnosis of this discharge associated components and the ratio of number of times (the first specific denominator) meeting self job requirement.Its physical significance of actual diagnosis of this form can be that this discharge key component often meets once self job requirement, the number of times that vehicle-mounted discharge diagnostic system is diagnosed it.
For example, for the diagnosis of catalyst converter, add up the first specific denominator and be counted as 42, numerator counts is 20, then to represent within a period of time (such as, last time resets so far) this catalyst converter has and meets self job requirement 42 times, and vehicle-mounted discharge diagnostic system has carried out 20 diagnosis to this catalyst converter, the actual diagnosis of this catalyst converter is 0.238 (20/42).
In the statistics strategy that the embodiment of Fig. 3 and Fig. 4 provides, the actual diagnosis of each discharge associated components can be the number of times (molecule) of the diagnosis of this discharge associated components and the ratio of number of times (being also called " the second specific denominator ") meeting self job requirement under the condition meeting the basic driving demand of vehicle.
Except the form of the ratio of above-mentioned two numerical value, actual diagnosis also can be the expression formula that molecule represents with other forms with (first or second) specific denominator, such as, the ratio of molecule and molecule, (first or second) specific denominator sum.
Pass through technique scheme, in vehicle-mounted discharge diagnostic system of the present invention, the number of times of the number of times and diagnosis that meet self job requirement of each discharge associated components is added up, calculate the actual diagnosis (such as diagnosing number of times and the ratio of number of times meeting self job requirement) of each discharge associated components, thus can understand by this actual diagnosis the frequency speed that vehicle-mounted discharge diagnostic system diagnoses each discharge associated components.
Fig. 5 is the structured flowchart of the vehicle-mounted discharge diagnostic system provided according to another embodiment of the present invention.As shown in Figure 5, in this embodiment, vehicle-mounted discharge diagnostic system 100 can also comprise scanning display apparatus 103.Control module 102 can also be used for Detection Information and diagnostic message to be transferred to scanning display apparatus 103, and scanning display apparatus 103 is connected with control module 102, for receiving Detection Information and diagnostic message from control module 102 and showing.
Like this, by showing Detection Information and diagnostic message with scanning display apparatus 103, user can contrast igniting counting, (first or second) specific denominator counting, numerator counts and actual diagnosis (if any in time, general denominator counting) understand the diagnosis frequency that each discharges associated components, and the fault state of each discharge associated components can be grasped in time according to above counting.
Wherein, if the statistics strategy provided with the embodiment of Fig. 2 is added up, then diagnostic message can comprise the number of times (the first specific denominator) meeting self job requirement of each discharge associated components, the number of times (molecule) of diagnosis and actual diagnosis; If the statistics strategy provided with the embodiment of Fig. 3 is added up, then diagnostic message can comprise each discharge associated components meet under the condition meeting the basic driving demand of vehicle self job requirement number of times (the second specific denominator), diagnosis number of times (molecule) and actual diagnosis; If the statistics strategy provided with the embodiment of Fig. 4 is added up, then the number of times (molecule) of the number of times (the second specific denominator) that diagnostic message can comprise the number of times (general denominator) meeting the basic driving demand of vehicle, each discharge associated components meets self job requirement under the condition meeting the basic driving demand of vehicle, diagnosis and actual diagnosis.
Wherein, when scanning display apparatus 103 is connected with control module 102, can select by the interactive interface in scanning display apparatus 103 AD HOC showing above-mentioned diagnostic message.The interface of this scanning display apparatus 103 and control module 102 such as can adopt 16 pin J1962 sockets of standard.
Especially, exist for one discharge associated components multiple characteristics carry out multichannel diagnosis (as, the diagnosis of lambda sensor relates to response delay and characteristic deviation two failure paths) when, control module 102 can also be used for selecting that actual diagnosis minimum for numerical value in multiple actual diagnosis corresponding for the multichannel diagnosis in this discharge associated components is transferred to scanning display apparatus 103 and show.Only pay close attention to minimum actual diagnosis, user can be helped more efficiently to check on to actual diagnosis, ensure the number of times of diagnosis.
Fig. 6 is the structured flowchart of the vehicle-mounted discharge diagnostic system provided according to another embodiment of the invention.As shown in Figure 6, in this embodiment, vehicle-mounted discharge diagnostic system 100 can also comprise warning device 104.Control module 102 can also be used for Detection Information and diagnostic message to be transferred to warning device 104, and warning device 104 is connected with control module 102, for reporting to the police according to the Detection Information received and diagnostic message.The particular content of its diagnostic message can be consistent with the content of diagnostic message in the embodiment of Fig. 5, repeats no more in this.
Particularly, when (distance travelled as preset) surmounts alarm threshold to a Detection Information under conditions set, warning device 104 can be reported to the police in the mode of Chang Liang, when (distance travelled as preset) surmounts the diagnostic threshold of its correspondence to a diagnostic message under conditions set (such as, actual diagnosis is lower than diagnosis threshold value), warning device 104 can be reminded in a flashing manner.Like this, can when do not carry out scanning display apparatus 103 read, reminding user produce fault or actual diagnosis on the low side.
By above technical scheme, user just can recognize the diagnosis frequency of vehicle-mounted discharge diagnostic system 100 to each discharge associated components.In the preferred case, vehicle-mounted discharge diagnostic system 100 provided by the invention also has adaptive threshold regulatory function.
In existing vehicle-mounted discharge diagnostic system, conditions for diagnostics such as comprise vehicle be in 5 grades of 70km/h, sea level elevation below 2440 meters, environment temperature more than-10 DEG C, the fault etc. of non-fault representation, this conditions for diagnostics presets, and changeless.
In vehicle-mounted discharge diagnostic system 100 of the present invention, control module 102 can also be used for, when actual diagnosis is lower than a predetermined diagnosis threshold value, automatically adjusts conditions for diagnostics, making actual diagnosis higher than this diagnosis threshold value.
Particularly, when control module 102 detects actual diagnosis lower than a predetermined diagnosis threshold value, adjust conditions for diagnostics by the threshold value of the triggering diagnosis increasing or reduce the every correspondence in conditions for diagnostics.Such as, control module 102 judges that a certain item (or multinomial) in conditions for diagnostics is long-term (such as, 30 driving cycles) all do not reach this corresponding triggering diagnosis threshold value, now, automatically the threshold value that this corresponding triggering is diagnosed can be reduced, adaptive adjustment is done to the threshold value (in the effective scope of diagnosis) of other corresponding triggerings diagnosis simultaneously, ensure certain diagnosis number of times.And for example, can preset in control module 102 and make diagnosis effectively overlap conditions for diagnostics more, when actual diagnosis does not meet the demands, control module 102 can reselect a set of conditions for diagnostics in this many covers conditions for diagnostics, triggers diagnosis afterwards according to new conditions for diagnostics.Wherein, in selected new conditions for diagnostics, for one or several in long-term unappeasable conditions for diagnostics, the threshold value of the triggering diagnosis of its correspondence can lower than the threshold value of the triggering diagnosis in former conditions for diagnostics.
For example, for a certain diagnosis of catalyst converter, in former conditions for diagnostics, the threshold value of the triggering diagnosis of speed of a motor vehicle item correspondence is 80km/h, and the threshold value of this speed of a motor vehicle lower duration is 2 minutes.Because traffic or road conditions limit, in for a long time, vehicle all can only reach about 50-60km/h.Through after a while (such as, 300 driving cycles or 5000km stroke), control module 102 detects that actual diagnosis is 0.1, lower than diagnosis threshold value (being such as set as 0.2), now Current Diagnostic condition can be adjusted to and be suitable for other a set of new conditions for diagnostics by control module 102 automatically.In new conditions for diagnostics, the threshold value of the triggering diagnosis of speed of a motor vehicle item correspondence is 60km/h, and the threshold value of this speed of a motor vehicle lower duration is 4 minutes.It should be noted that, the adjustment of threshold value is optimizing and revising conditions for diagnostics under the reliable prerequisite of guarantee diagnosis, and the adjustment of this threshold value can be carried out according to the predetermined policy in control module 102, and this predetermined policy can be optimized according to pre-defined algorithm and determines.
Like this, this adaptive threshold regulatory function in vehicle-mounted discharge diagnostic system 100 of the present invention can ensure certain diagnosis number of times in the effective scope of diagnosis, thus make user can find fault as soon as possible, and effectively can control the discharge of vehicle.
The present invention also provides a kind of vehicle comprising above-mentioned vehicle-mounted discharge diagnostic system 100.
The present invention also provides a kind of vehicular discharge diagnostic method.Fig. 7 is the process flow diagram of the vehicular discharge diagnostic method provided according to the embodiment of the present invention.As shown in Figure 7, the method can comprise:
Step S701, detects discharge associated components, and obtains Detection Information;
Step S702, when Detection Information meets conditions for diagnostics, diagnoses according to the emission status of Detection Information to vehicle;
Afterwards, step S703 and step S704 can be carried out respectively.
Step S703, adds up the number of times that each discharge associated components meets self job requirement;
Step S704, adds up the number of times diagnosed each discharge associated components; And
Step S705, calculates the actual diagnosis of each discharge associated components according to the number of times of the number of times and diagnosis that meet self job requirement of each discharge associated components.
Fig. 8 is the process flow diagram of the vehicular discharge diagnostic method provided according to another embodiment of the present invention.As shown in Figure 8, the method can also comprise:
After step S702, step S702 ', step S703 ' and step S704 can be carried out respectively.
Step S702 ', statistics meets the number of times of the basic driving demand of vehicle;
Step S703 ', adds up the number of times that each discharge associated components meets self job requirement under the condition meeting the basic driving demand of vehicle;
In step S702 ' and step S703 ' afterwards, step S705 ' can be carried out.
Step S705 ', the difference meeting the number of times of self job requirement under meeting the condition of basic driving demand at vehicle according to the number of times and a discharge associated components that meet the basic driving demand of vehicle determines that this discharge associated components does not reach the number of times of self job requirement;
After step S703 ' and step S704, step S706 can be carried out.
Step S706, calculates the actual diagnosis of this discharge associated components according to a number of times discharging the number of times and diagnosis that associated components meets self job requirement under the condition meeting the basic driving demand of vehicle;
Afterwards, step S707, step S708 and step S709 can be carried out respectively.
Step S707, shows Detection Information and diagnostic message;
Step S708, reports to the police according to Detection Information and diagnostic message; And
Step S709, when actual diagnosis is lower than a predetermined diagnosis threshold value, automatically adjusts conditions for diagnostics, makes actual diagnosis higher than this diagnosis threshold value.
The concrete steps of the vehicular discharge diagnostic method that above embodiment provides, with reference to the description of the embodiment of aforementioned vehicle-mounted discharge diagnostic system 100, repeat no more herein.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (19)
1. a vehicle-mounted discharge diagnostic system, this system comprises:
Sensor unit, for detecting discharge associated components, and obtains Detection Information; And
Control module, is connected with described sensor unit, for receiving described Detection Information, and when described Detection Information meets conditions for diagnostics, diagnoses according to the emission status of described Detection Information to vehicle,
It is characterized in that,
Described control module is also for adding up the number of times that each discharge associated components meets self job requirement according to described Detection Information, add up the number of times that each discharge associated components is diagnosed, and calculate the actual diagnosis of each discharge associated components according to the number of times of the described number of times and described diagnosis that meet self job requirement.
2. system according to claim 1, is characterized in that, described control module also for:
When adding up each discharge associated components and meeting the number of times of the number of times of self job requirement and described diagnosis, respectively the upper limit is arranged to the increment of number of times during each driving cycle of the described number of times and described diagnosis that meet self job requirement of each discharge associated components.
3. system according to claim 1, is characterized in that, the number of times meeting self job requirement described in each discharge associated components that described control module is added up is the number of times meeting self job requirement under the condition meeting the basic driving demand of vehicle.
4. system according to claim 3, is characterized in that, described control module also for:
Statistics meets the number of times of the basic driving demand of vehicle, and meets the difference that number of times of the basic driving demand of vehicle and a discharge associated components meet the number of times of self job requirement under the condition meeting the basic driving demand of vehicle determine that this discharge associated components does not reach the number of times of self job requirement according to this.
5. system according to claim 1, is characterized in that, the described actual diagnosis of each discharge associated components is the number of times of the described diagnosis of this discharge associated components and the described ratio meeting the number of times of self job requirement.
6. the system according to claim arbitrary in claim 1-5, is characterized in that,
Described control module is also for being transferred to scanning display apparatus by described Detection Information and diagnostic message, wherein, described diagnostic message comprises the described of each discharge associated components and meets the number of times of self job requirement, the number of times of described diagnosis and described actual diagnosis;
This system also comprises:
Described scanning display apparatus, is connected with described control module, for receiving described Detection Information and described diagnostic message from described control module and showing.
7. system according to claim 6, is characterized in that, described control module also for:
When there are multiple characteristics of discharging associated components for and carrying out multichannel diagnosis, select that actual diagnosis minimum for numerical value in multiple actual diagnosis corresponding for the described multichannel diagnosis in this discharge associated components is transferred to described scanning display apparatus and show.
8. the system according to claim arbitrary in claim 1-5, is characterized in that,
Described control module is also for being transferred to warning device by described Detection Information and diagnostic message, and wherein, described diagnostic message comprises the described of each discharge associated components and meets the number of times of self job requirement, the number of times of described diagnosis and described actual diagnosis;
This system also comprises:
Described warning device, is connected with described control module, for reporting to the police according to the described Detection Information received and described diagnostic message.
9. system according to claim 1, is characterized in that, described control module also for:
When described actual diagnosis is lower than a predetermined diagnosis threshold value, the described conditions for diagnostics of adjustment, makes described actual diagnosis higher than described diagnosis threshold value automatically.
10. one kind comprises the vehicle of the vehicle-mounted discharge diagnostic system in claim 1-9 described in arbitrary claim.
11. 1 kinds of vehicular discharge diagnostic methods, the method comprises:
Discharge associated components is detected, and obtains Detection Information;
When described Detection Information meets conditions for diagnostics, diagnose according to the emission status of described Detection Information to vehicle;
Add up the number of times that each discharge associated components meets self job requirement;
Add up the number of times that each discharge associated components is diagnosed; And
The actual diagnosis of each discharge associated components is calculated according to the number of times of the described number of times and described diagnosis that meet self job requirement of each discharge associated components.
12. methods according to claim 11, it is characterized in that, the method also comprises:
When adding up each discharge associated components and meeting the number of times of the number of times of self job requirement and described diagnosis, respectively the upper limit is arranged to the increment of number of times during each driving cycle of the described number of times and described diagnosis that meet self job requirement of each discharge associated components.
13. methods according to claim 11, is characterized in that, the number of times meeting self job requirement described in each discharge associated components added up is the number of times meeting self job requirement under the condition meeting the basic driving demand of vehicle.
14. methods according to claim 13, it is characterized in that, the method also comprises:
Statistics meets the number of times of the basic driving demand of vehicle, and meets the difference that number of times of the basic driving demand of vehicle and a discharge associated components meet the number of times of self job requirement under the condition meeting the basic driving demand of vehicle determine that this discharge associated components does not reach the number of times of self job requirement according to this.
15. methods according to claim 11, is characterized in that, the described actual diagnosis of each discharge associated components is the number of times of the described diagnosis of this discharge associated components and the described ratio meeting the number of times of self job requirement.
16. methods according to claim arbitrary in claim 11-15, it is characterized in that, the method also comprises:
Described Detection Information and diagnostic message are shown,
Wherein, described diagnostic message comprises the described of each discharge associated components and meets the number of times of self job requirement, the number of times of described diagnosis and described actual diagnosis.
17. methods according to claim 16, it is characterized in that, the method also comprises:
When there are multiple characteristics of discharging associated components for and carrying out multichannel diagnosis, select actual diagnosis minimum for numerical value in multiple actual diagnosis corresponding for the described multichannel diagnosis in this discharge associated components to show.
18. methods according to claim arbitrary in claim 11-15, it is characterized in that, the method also comprises:
Report to the police according to described Detection Information and diagnostic message,
Wherein, described diagnostic message comprises the described of each discharge associated components and meets the number of times of self job requirement, the number of times of described diagnosis and described actual diagnosis.
19. methods according to claim 11, it is characterized in that, the method also comprises:
When described actual diagnosis is lower than a predetermined diagnosis threshold value, the described conditions for diagnostics of adjustment, makes described actual diagnosis higher than described diagnosis threshold value automatically.
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Address after: 102206 North of Laoniuwan Village, Shayang Road, Shahe Town, Changping District, Beijing Patentee after: Beiqi Futian Automobile Co., Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: Beiqi Futian Automobile Co., Ltd. |