CN103726930A - Fault detection device and method of exhaust gas recirculation engine - Google Patents
Fault detection device and method of exhaust gas recirculation engine Download PDFInfo
- Publication number
- CN103726930A CN103726930A CN201310660648.7A CN201310660648A CN103726930A CN 103726930 A CN103726930 A CN 103726930A CN 201310660648 A CN201310660648 A CN 201310660648A CN 103726930 A CN103726930 A CN 103726930A
- Authority
- CN
- China
- Prior art keywords
- temperature
- water
- circulating water
- valve
- fault
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 290
- 238000001816 cooling Methods 0.000 claims description 14
- 230000015556 catabolic process Effects 0.000 claims description 13
- 238000006731 degradation reaction Methods 0.000 claims description 13
- 230000003134 recirculating effect Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 41
- 230000007423 decrease Effects 0.000 description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The embodiment of the invention provides a fault detection device and method of an exhaust gas recirculation engine. The fault detection device is provided with a first circulation water valve for the recirculation engine, and particularly comprises a controller, the first circulation water valve, a temperature sensor and a processor, wherein the controller is used for closing a recirculation valve and closing the first circulation water valve according to instructions, the first circulation water valve is used for controlling first circulation water to start or stop circulation, the first circulation water is circulation water of a recirculation system, the temperature sensor is used for detecting the temperature of second circulation water after the recirculation valve is closed to obtain a first water temperature, and detecting the temperature of the second circulation water after the first circulation water valve is closed to obtain a second water temperature, the second circulation water is engine circulation water, the processor is used for judging whether the first water temperature is higher than a first threshold value, and if yes, the first circulation water valve is closed according to instructions. Whether the second water temperature is higher than a second threshold value is judged, and if not, the fault type is determined as a recirculation cooler fault.
Description
Technical field
Designed engines technical field of the present invention, particularly a kind of Fail detecting apparatus of exhaust gas recirculation engines and method.
Background technique
Exhaust gas recirculatioon (Exhaust Gas Recirculation is called for short EGR) is a kind of mode that is used as designing for motor car engine.The principle of EGR motor is, after engine combustion, a part for Exhaust Gas gone out again to suck in motor, to reduce the amount of nitrogen oxides in Exhaust Gas, and plays certain energy-conserving action.In the middle of EGR technology, cooler (Exhaust Gas Recirculation Cooler is called for short EGRC) is its key components.By EGRC, reduce EGR gas temperature, can improve significantly the emission reduction effect of nitrogen oxide, also can avoid the control valve of the too high damage of exhaust gas temperature EGR simultaneously.
In the middle of EGR motor, the circulating water temperature that common a kind of phenomenon of the failure is motor is too high, " phenomenon of boiling " being namely commonly called as.The fault of the water circulation assembly (with water pump or thermostat etc.) of EGRC faults itself (such as the fault of EGRC, the decline of EGRC performance) and EGRC itself, all likely causes cooling effectiveness to decline, and the circulating water temperature that causes motor is too high.
In prior art, if there is the phenomenon of circulating water of engine excess Temperature, will, by closing the recirculation (egr) valve a series of restrictions of limiting engine moment of torsion simultaneously, to guarantee the decline of circulating water of engine water temperature, carry out again afterwards detection and the maintenance of fault.
The defect of prior art is, is not all faults that cause cycle of engine coolant-temperature gage to rise, and all must water temperature be returned by torque limiting normal, and limiting engine moment of torsion will affect the performance of engine power performance; So, for the troubleshooting methodology of the equal torque limiting of all faults, reduction engine power that may be unnecessary, affects the normal operation of motor in the middle of prior art.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of Fail detecting apparatus and method of exhaust gas recirculation engines, to realize failure judgement reason accurately, and take restriction for fault.
For achieving the above object, the present invention has following technological scheme:
A Fail detecting apparatus for exhaust gas recirculation engines, described device is that recirculation motor arranges the first circulating water valve, describedly specifically comprises:
Controller, for closing recirculation (egr) valve, and closes the first circulating water valve according to instruction;
The first circulating water valve, opens or closes circulation for controlling the first circulating water; The circulating water that described the first circulating water is recirculating system;
Temperature transducer, for after cutting out recirculation (egr) valve, carries out temperature detection to the second circulating water, obtains the first water temperature; After the first circulating water valve is closed, described the second circulating water is carried out to temperature detection, obtain the second water temperature; Described the second circulating water is circulating water of engine;
Processor, for judging that whether described the first water temperature is higher than first threshold, if it is the first circulating water valve is closed in instruction; Judge that whether described the second water temperature is higher than Second Threshold, if otherwise fault type is defined as to recycle cooler fault.
Described temperature transducer is also for detection of the temperature of gas after engine cooling;
Processor also for; Judge that whether the temperature of gas after described engine cooling is higher than gas temperature threshold value, if gas temperature higher than gas temperature threshold value, described in instruction, controller is closed recirculation (egr) valve, otherwise thinks described motor fault-free.
Described processor judges whether described the first water temperature also comprises higher than first threshold:
When described the first water temperature is lower than first threshold, fault type is defined as to recycle cooler performance degradation.
Described processor judges whether described the second water temperature also comprises higher than Second Threshold:
When described the second water temperature is higher than Second Threshold, fault type is defined as to the second water circulation component faults, the water circulation assembly that described the second water circulation assembly is motor.
Described controller is also for switch the first circulating water valve repeatedly;
Described temperature transducer, also for repeatedly described the second circulating water being carried out to temperature detection during switch at the first circulating water valve, obtains the 3rd water temperature;
Described processor also for; Monitor the 3rd water temperature, when opening the first circulating-water valve behind the door, the 3rd water temperature raises, and closes the first circulating-water valve behind the door, and the 3rd declines, and fault type is defined as to recycle cooler fault;
Described recycle cooler fault is specially the gas circuit of recycle cooler and reveals.
A fault detection method for exhaust gas recirculation engines, described method is that recirculation motor arranges the first circulating water valve, to control the first circulating water, opens or close circulation; The circulating water that described the first circulating water is recirculating system; Said method comprising the steps of:
After closing recirculation (egr) valve, the second circulating water is carried out to temperature detection and obtain the first water temperature, judge that whether described the first water temperature is higher than first threshold; Described the second circulating water is circulating water of engine;
When described the first water temperature is higher than first threshold, close the first circulating water valve, after closing the first circulating water valve, described the second circulating water is carried out to temperature detection, obtain the second water temperature;
Judge that whether described the second water temperature is higher than Second Threshold; If described the second water temperature, not higher than Second Threshold, is defined as fault type recycle cooler fault.
The described recirculation (egr) valve of closing is specially:
Judge that whether the temperature of gas after described engine cooling is higher than gas temperature threshold value, if gas temperature, higher than gas temperature threshold value, is closed recirculation (egr) valve, otherwise think described motor fault-free.
Described method also comprises:
When described the first water temperature is lower than first threshold, fault type is defined as to recycle cooler performance degradation.
Described method also comprises:
When described the second water temperature is higher than Second Threshold, fault type is defined as to the second water circulation component faults, the water circulation assembly that described the second water circulation assembly is motor.
Describedly fault type be defined as to recycle cooler fault also comprise:
Switch the first circulating water valve repeatedly, and described the second circulating water is carried out to temperature detection simultaneously, obtain the 3rd water temperature;
If when opening the first circulating-water valve behind the door, the 3rd water temperature raises, and closes the first circulating-water valve behind the door, the 3rd declines, and fault type is defined as to recycle cooler fault;
Described recycle cooler fault is specially the gas circuit of recycle cooler and reveals.
As seen through the above technical solutions, the beneficial effect that the present invention exists is: by setting up the first circulating water valve, the first water temperature and the Changing Pattern of closing the first circulating water valve the second water temperature afterwards after recirculation (egr) valve closed in judgement, realize concluding of EGRC fault, thereby avoid unnecessary torque limiting, guaranteed the normal operation of motor; Can also pass through more complete water temperature judgment mechanism, conclude accurately and three kinds of different faults; And pass through switch the first circulating water valve repeatedly, and realize and conclude more accurately EGRC fault, got rid of the interference of accidentalia.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is method flow diagram described in the embodiment of the present invention;
Fig. 2 is apparatus structure schematic diagram described in the embodiment of the present invention;
Fig. 3 is method flow diagram described in another embodiment of the present invention;
Fig. 4 is apparatus structure schematic diagram described in another embodiment of the present invention.
Embodiment
For making object, technological scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
In the present invention, described faut detection for fault type mainly contain three kinds:
The one, EGRC fault, the fault of so-called EGRC is exactly mainly the gas circuit leakage of EGRC, and the engine exhaust gas of recirculation enters in the middle of the water circulation of EGRC, causes cooling effectiveness to decline, and cycle of engine coolant-temperature gage rises.But, with reference to the working principle of EGR motor, do not need to carry out torque limited during the fault of EGRC, only need stop the water circulation of EGRC, circulating water temperature will decline.
The 2nd, the water circulation component faults of motor, the fault of water pump or thermostat for example, in view of the working principle of EGR motor, can know, even if the feature of engine water recirculation assembly fault is the water circulation that stops EGRC, the circulating water temperature of motor still can not decline.
The performance degradation of the 3rd, EGRC; In fact so-called performance degradation carbon distribution deposition in EGRC causes, and is not the fault causing due to physical damage; The feature of the performance degradation of EGRC is that, as long as close recirculation (egr) valve, the water temperature of circulating water of engine will decline.
Feature based on above three kinds of faults, Fail detecting apparatus of the present invention and method no longer, when fault occurs, are carried out the restriction of closing recirculation (egr) valve limiting engine moment of torsion simultaneously.But set up a first circulating water valve for EGRC water circulation, according to special type operation recirculation (egr) valve and the first circulating water valve successively, thereby find accurately the particular type of fault.
Shown in Figure 1 is a specific embodiment of the method for the invention.Because simple EGRC fault is without torque limiting, so for fear of unnecessary torque limiting, the main purpose of method is to detect the fault of EGRC described in the present embodiment.In described method, in EGR motor, add the first circulating water valve, to control the first circulating water, opened or closed circulation; The circulating water that described the first circulating water is EGRC.Said method comprising the steps of:
As need detect a certain fault, whether be EGRC fault, need to judge according to the feature of EGRC fault.That is to say, when EGRC fault, close the obvious decline that recirculation (egr) valve can not cause the second circulating water water temperature; And further close the first circulating water valve after closing recirculation (egr) valve, can cause the obvious decline of the second circulating water water temperature.
So now close recirculation (egr) valve in the present embodiment, then close the first circulating water valve; Choose close after recirculation (egr) valve and close the first circulating water valve after two nodes carry out the thermometry of the second circulating water, obtain the first water temperature and the second water temperature; And according to actual working condition, first threshold and Second Threshold are set.
If the first water temperature is higher than first threshold, after recirculation (egr) valve is closed in explanation, water temperature is significant decline not; And the second water temperature is lower than Second Threshold, add bright close the first circulating water valve after, water temperature decreases drastically.Like this meet the Rule of judgment of EGRC fault, so conclude that this fault is EGRC fault.
With reference to a specific embodiment that Figure 2 shows that device of the present invention.Device described in the present embodiment is for realizing an entity apparatus of described method embodiment illustrated in fig. 1.Associated description in embodiment illustrated in fig. 1 is equally applicable in the present embodiment, and device has added a first circulating water valve that can limit EGRC water circulation in EGR motor described in the present embodiment, describedly specifically comprises:
Controller, for closing recirculation (egr) valve, and closes the first circulating water valve according to instruction.
The first circulating water valve, opens or closes circulation for controlling the first circulating water; The circulating water that described the first circulating water is recirculating system.
Temperature transducer, for after cutting out recirculation (egr) valve, carries out temperature detection to the second circulating water, obtains the first water temperature; After the first circulating water valve is closed, described the second circulating water is carried out to temperature detection, obtain the second water temperature; Described the second circulating water is circulating water of engine.
Processor, for judging that whether described the first water temperature is higher than first threshold, if it is the first circulating water valve is closed in instruction; Judge that whether described the second water temperature is higher than Second Threshold, if otherwise fault type is defined as to recycle cooler fault.
Fig. 1～2 illustrated embodiment is the basic embodiment of the method for the invention and device.Known by above description, the beneficial effect that above-mentioned two embodiments exist is: by setting up the first circulating water valve, the first water temperature and the Changing Pattern of closing the first circulating water valve the second water temperature afterwards after recirculation (egr) valve closed in judgement, realize concluding of EGRC fault, thereby avoid unnecessary torque limiting, guaranteed the normal operation of motor.
Shown in Fig. 3, it is another specific embodiment of the method for the invention.In the present embodiment, described method is the further perfect judgment mechanism for the second circulating water temperature on basis embodiment illustrated in fig. 1, makes can conclude accurately three kinds of different faults by described method.Described method specifically comprises the following steps:
In the present embodiment, the condition that triggers fault detection method is to detect the temperature of the cooling rear gas of motor.Described gas temperature threshold value is the temperature standard in normal range (NR) whether of judging cooling rear gas, if gas temperature exceeds standard, the cooling fault that exists of EGRC is described, closes recirculation (egr) valve, starts faut detection flow process.Otherwise think that EGRC is in the middle of normal operation.
Aforementioned known, if the performance degradation that fault is EGRC has the feature that recirculation (egr) valve can cause the water temperature of the second circulating water to decline of closing; But if fault is EGRC fault or the second water circulation component faults, closes after recirculation (egr) valve the temperature of the second circulating water and do not have very significantly and decline.So set first threshold for this water temperature Changing Pattern in the present embodiment, can determine or get rid of the situation of EGRC performance degradation.
If described the first water temperature obviously reduced before closing recirculation (egr) valve, in other words lower than first threshold, just meet the feature of EGRC performance degradation, can conclude that this fault is EGRC performance degradation.
When the first water temperature is higher than first threshold, illustrate fault type be EGRC fault or the second water circulation component faults the two one of.But determine it is any fault actually, also need further to judge by closing the water temperature Changing Pattern of the second circulating water after the first circulating water valve.
So will close the first circulating water valve the second circulating water temperature afterwards as the second water temperature in the present embodiment, and judge with reference to Second Threshold whether the second water temperature exists obvious decline.
After closing the first circulating water valve, obviously declining appears in the second water temperature, lower than Second Threshold, meets the feature of EGRC fault, so fault type is defined as to recycle cooler fault.
In the present embodiment, for confirming that fault type is EGRC fault, further increased the step of switch the first circulating water valve repeatedly.Feature based on EGRC fault, after opening the first circulating water valve, the second circulating water temperature increases, and after closing the first circulating water valve, the second circulating water temperature declines thereupon.
In this step, will be repeatedly in switching process, the second circulating water temperature of dynamic change is as the 3rd water temperature, and judges whether the 3rd water temperature meets above water temperature Changing Pattern.If met, can conclude more accurately, this fault must be EGRC fault, gets rid of the interference of accidentalia.
It is emphasized that described EGRC fault is specially the gas circuit leakage of recycle cooler.
After closing the first circulating water valve, significantly not changing appears in the second water temperature, still higher than described Second Threshold, meets the feature of the second water circulation component faults, so fault type is defined as to the second water circulation component faults.
With reference to another specific embodiment that Figure 4 shows that device of the present invention.Device described in the present embodiment is for realizing an entity apparatus of described method embodiment illustrated in fig. 3.Associated description in embodiment illustrated in fig. 3 is equally applicable in the present embodiment, installs described in the present embodiment and specifically comprises:
Controller, for closing recirculation (egr) valve, and closes the first circulating water valve according to instruction.
The first circulating water valve, opens or closes circulation for controlling the first circulating water; The circulating water that described the first circulating water is recirculating system.
Temperature transducer, for after cutting out recirculation (egr) valve, carries out temperature detection to the second circulating water, obtains the first water temperature; After the first circulating water valve is closed, described the second circulating water is carried out to temperature detection, obtain the second water temperature; Described the second circulating water is circulating water of engine.
Processor, for judging that whether described the first water temperature is higher than first threshold, if it is the first circulating water valve is closed in instruction; Judge that whether described the second water temperature is higher than Second Threshold, if otherwise fault type is defined as to recycle cooler fault.
Described temperature transducer is also for detection of the temperature of gas after engine cooling;
Processor also for; Judge that whether the temperature of gas after described engine cooling is higher than gas temperature threshold value, if gas temperature higher than gas temperature threshold value, described in instruction, controller is closed recirculation (egr) valve, otherwise thinks described motor fault-free.
Described processor judges whether described the first water temperature also comprises higher than first threshold:
When described the first water temperature is lower than first threshold, fault type is defined as to recycle cooler performance degradation.
Described processor judges whether described the second water temperature also comprises higher than Second Threshold:
When described the second water temperature is higher than Second Threshold, fault type is defined as to the second water circulation component faults, described the second water circulation assembly is the water circulation assembly in recirculating system.
Described controller is also for switch the first circulating water valve repeatedly;
Described temperature transducer, also for repeatedly described the second circulating water being carried out to temperature detection during switch at the first circulating water valve, obtains the 3rd water temperature;
Described processor also for; Monitor the 3rd water temperature, when opening the first circulating-water valve behind the door, the 3rd water temperature raises, and closes the first circulating-water valve behind the door, and the 3rd declines, and fault type is defined as to recycle cooler fault;
Described recycle cooler fault is specially the gas circuit of recycle cooler and reveals.
As seen through the above technical solutions, the beneficial effect that Fig. 3～4 illustrated embodiment exists is: by more complete water temperature judgment mechanism, conclude accurately and three kinds of different faults; And pass through switch the first circulating water valve repeatedly, and realize and conclude more accurately EGRC fault, got rid of the interference of accidentalia; Above two embodiment's overall technical architectures are more complete, open more abundant.
Also it should be noted that, the first threshold described in above embodiment, Second Threshold, the 3rd threshold value and gas temperature threshold value are all to arrange according to the actual operating mode of EGR motor.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a Fail detecting apparatus for exhaust gas recirculation engines, is characterized in that, described device is that recirculation motor arranges the first circulating water valve, describedly specifically comprises:
Controller, for closing recirculation (egr) valve, and closes the first circulating water valve according to instruction;
The first circulating water valve, opens or closes circulation for controlling the first circulating water; The circulating water that described the first circulating water is recirculating system;
Temperature transducer, for after cutting out recirculation (egr) valve, carries out temperature detection to the second circulating water, obtains the first water temperature; After the first circulating water valve is closed, described the second circulating water is carried out to temperature detection, obtain the second water temperature; Described the second circulating water is circulating water of engine;
Processor, for judging that whether described the first water temperature is higher than first threshold, if it is the first circulating water valve is closed in instruction; Judge that whether described the second water temperature is higher than Second Threshold, if otherwise fault type is defined as to recycle cooler fault.
2. device according to claim 1, is characterized in that, described temperature transducer is also for detection of the temperature of gas after engine cooling;
Processor also for; Judge that whether the temperature of gas after described engine cooling is higher than gas temperature threshold value, if gas temperature higher than gas temperature threshold value, described in instruction, controller is closed recirculation (egr) valve, otherwise thinks described motor fault-free.
3. according to device described in claim 1 or 2, it is characterized in that, described processor judges whether described the first water temperature also comprises higher than first threshold:
When described the first water temperature is lower than first threshold, fault type is defined as to recycle cooler performance degradation.
4. according to device described in claim 1 or 2, it is characterized in that, described processor judges whether described the second water temperature also comprises higher than Second Threshold:
When described the second water temperature is higher than Second Threshold, fault type is defined as to the second water circulation component faults, the water circulation assembly that described the second water circulation assembly is motor.
5. according to device described in claim 1 or 2, it is characterized in that, described controller is also for switch the first circulating water valve repeatedly;
Described temperature transducer, also for repeatedly described the second circulating water being carried out to temperature detection during switch at the first circulating water valve, obtains the 3rd water temperature;
Described processor also for; Monitor the 3rd water temperature, when opening the first circulating-water valve behind the door, the 3rd water temperature raises, and closes the first circulating-water valve behind the door, and the 3rd declines, and fault type is defined as to recycle cooler fault;
Described recycle cooler fault is specially the gas circuit of recycle cooler and reveals.
6. a fault detection method for exhaust gas recirculation engines, is characterized in that, described method is that recirculation motor arranges the first circulating water valve, to control the first circulating water, opens or close circulation; The circulating water that described the first circulating water is recirculating system; Said method comprising the steps of:
After closing recirculation (egr) valve, the second circulating water is carried out to temperature detection and obtain the first water temperature, judge that whether described the first water temperature is higher than first threshold; Described the second circulating water is circulating water of engine;
When described the first water temperature is higher than first threshold, close the first circulating water valve, after closing the first circulating water valve, described the second circulating water is carried out to temperature detection, obtain the second water temperature;
Judge that whether described the second water temperature is higher than Second Threshold; If described the second water temperature, not higher than Second Threshold, is defined as fault type recycle cooler fault.
7. method according to claim 6, is characterized in that, described in close recirculation (egr) valve and be specially:
Judge that whether the temperature of gas after described engine cooling is higher than gas temperature threshold value, if gas temperature, higher than gas temperature threshold value, is closed recirculation (egr) valve, otherwise think described motor fault-free.
8. according to method described in claim 6 or 7, it is characterized in that, described method also comprises:
When described the first water temperature is lower than first threshold, fault type is defined as to recycle cooler performance degradation.
9. according to method described in claim 6 or 7, it is characterized in that, described method also comprises:
When described the second water temperature is higher than Second Threshold, fault type is defined as to the second water circulation component faults, the water circulation assembly that described the second water circulation assembly is motor.
10. according to method described in claim 6 or 7, it is characterized in that, describedly fault type is defined as to recycle cooler fault also comprises:
Switch the first circulating water valve repeatedly, and described the second circulating water is carried out to temperature detection simultaneously, obtain the 3rd water temperature;
If when opening the first circulating-water valve behind the door, the 3rd water temperature raises, and closes the first circulating-water valve behind the door, the 3rd declines, and fault type is defined as to recycle cooler fault;
Described recycle cooler fault is specially the gas circuit of recycle cooler and reveals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660648.7A CN103726930B (en) | 2013-12-09 | 2013-12-09 | The failure detector of a kind of exhaust gas recirculation engines and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660648.7A CN103726930B (en) | 2013-12-09 | 2013-12-09 | The failure detector of a kind of exhaust gas recirculation engines and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103726930A true CN103726930A (en) | 2014-04-16 |
| CN103726930B CN103726930B (en) | 2016-06-08 |
Family
ID=50451184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310660648.7A Expired - Fee Related CN103726930B (en) | 2013-12-09 | 2013-12-09 | The failure detector of a kind of exhaust gas recirculation engines and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103726930B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568344A (en) * | 2014-10-09 | 2015-04-29 | 芜湖扬宇机电技术开发有限公司 | EGR (Exhaust Gas Recirculation) pipeline fault detection diagnosis method |
| CN109975026A (en) * | 2019-03-29 | 2019-07-05 | 潍柴动力股份有限公司 | Engine failure monitoring method and relevant device |
| CN111219838A (en) * | 2019-11-19 | 2020-06-02 | 珠海格力电器股份有限公司 | Temperature controller and air conditioner matching method and device and temperature controller equipment |
| CN112380707A (en) * | 2020-11-18 | 2021-02-19 | 潍柴动力股份有限公司 | Method and device for evaluating cooling performance of EGR cooler and electronic equipment |
| CN115420505A (en) * | 2022-08-24 | 2022-12-02 | 东风汽车集团股份有限公司 | Test method and test device for exhaust gas recirculation system of engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1681456A1 (en) * | 2004-12-27 | 2006-07-19 | Valeo Systemes Thermiques | Installation for engine admitted gas controlling |
| CN101341327A (en) * | 2005-12-21 | 2009-01-07 | 斯堪尼亚有限公司 | An arrangement and a method for recirculation of exhaust gases of an internal combustion engine |
| CN101578437A (en) * | 2006-09-29 | 2009-11-11 | 斯堪尼亚有限公司 | Cooling arrangement |
| US20110048389A1 (en) * | 2009-08-25 | 2011-03-03 | International Engine Intellectual Property Llc | EMG Temp Signal Model Based On EGRC Out Temp For EGR System Anti-Fouling Protection |
| CN102822493A (en) * | 2009-12-22 | 2012-12-12 | 法雷奥电机控制系统公司 | Method for controlling an Egr circuit of a motor vehicle engine, valve for implementing said method, and engine having said valve |
-
2013
- 2013-12-09 CN CN201310660648.7A patent/CN103726930B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1681456A1 (en) * | 2004-12-27 | 2006-07-19 | Valeo Systemes Thermiques | Installation for engine admitted gas controlling |
| CN101341327A (en) * | 2005-12-21 | 2009-01-07 | 斯堪尼亚有限公司 | An arrangement and a method for recirculation of exhaust gases of an internal combustion engine |
| CN101578437A (en) * | 2006-09-29 | 2009-11-11 | 斯堪尼亚有限公司 | Cooling arrangement |
| US20110048389A1 (en) * | 2009-08-25 | 2011-03-03 | International Engine Intellectual Property Llc | EMG Temp Signal Model Based On EGRC Out Temp For EGR System Anti-Fouling Protection |
| CN102822493A (en) * | 2009-12-22 | 2012-12-12 | 法雷奥电机控制系统公司 | Method for controlling an Egr circuit of a motor vehicle engine, valve for implementing said method, and engine having said valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568344A (en) * | 2014-10-09 | 2015-04-29 | 芜湖扬宇机电技术开发有限公司 | EGR (Exhaust Gas Recirculation) pipeline fault detection diagnosis method |
| CN109975026A (en) * | 2019-03-29 | 2019-07-05 | 潍柴动力股份有限公司 | Engine failure monitoring method and relevant device |
| CN109975026B (en) * | 2019-03-29 | 2020-12-22 | 潍柴动力股份有限公司 | Engine fault monitoring method and related equipment |
| CN111219838A (en) * | 2019-11-19 | 2020-06-02 | 珠海格力电器股份有限公司 | Temperature controller and air conditioner matching method and device and temperature controller equipment |
| CN112380707A (en) * | 2020-11-18 | 2021-02-19 | 潍柴动力股份有限公司 | Method and device for evaluating cooling performance of EGR cooler and electronic equipment |
| CN115420505A (en) * | 2022-08-24 | 2022-12-02 | 东风汽车集团股份有限公司 | Test method and test device for exhaust gas recirculation system of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103726930B (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103726930A (en) | Fault detection device and method of exhaust gas recirculation engine | |
| EP2957744B1 (en) | Temperature control apparatus for intercooler | |
| WO2012077316A1 (en) | Method and device for judging propriety of egr valve operation | |
| CN105888908A (en) | Natural gas engine gas track leakage detection method | |
| KR20110070955A (en) | Method for performing diagnostics on line systems of internal combustion engines | |
| DE102015000300A1 (en) | Anomaly diagnosis device and abnormality diagnosis method for a variable valve mechanism, internal combustion engine and computer program product | |
| CN113187629A (en) | Method and device for processing state of EGR valve | |
| CN110609538B (en) | Fault processing method, device, equipment and storage medium | |
| JP2010090773A (en) | Control device for engine | |
| JP6082242B2 (en) | Water temperature sensor backup system | |
| RU2700175C2 (en) | Method for diagnosing motor vehicle partial exhaust gas recirculation system | |
| JP2010127243A (en) | Failure diagnosing device for internal combustion engine | |
| CN102644514A (en) | Diagnosis method for drift failure of rail pressure sensor in common rail system | |
| US20170058756A1 (en) | Cooling apparatus for internal combustion engine | |
| CN104314687B (en) | Control method for self-cleaning function of engine VVT oil passage | |
| KR20190053597A (en) | Method for Dilution Control with Optimum Oil Temperature and Diesel Engine System | |
| KR20160070268A (en) | Control method for egr system | |
| JP2008309134A (en) | Water leakage detector for egr cooler | |
| KR101355621B1 (en) | Egr system | |
| DE19958385A1 (en) | Method to diagnosis faults in refrigerant circuit of internal combustion engine, involves determining and evaluating torque loss of engine | |
| KR102212444B1 (en) | Operating method of thermal management system | |
| CN104930257B (en) | A kind of control method and device of valve | |
| KR101968132B1 (en) | Method for monitoring egr system | |
| CN112834124A (en) | Internal leakage judgment method for EGR cooler and related device | |
| DE102009056783B4 (en) | Method and device for determining a simplified modeled coolant temperature value for a cooling circuit of an internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 |