CN201363181Y - Control system for exhaust particulate filter of diesel vehicle - Google Patents
Control system for exhaust particulate filter of diesel vehicle Download PDFInfo
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- CN201363181Y CN201363181Y CNU2008201637604U CN200820163760U CN201363181Y CN 201363181 Y CN201363181 Y CN 201363181Y CN U2008201637604 U CNU2008201637604 U CN U2008201637604U CN 200820163760 U CN200820163760 U CN 200820163760U CN 201363181 Y CN201363181 Y CN 201363181Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model relates to a control system for an exhaust particulate filter of a diesel vehicle, which is used to acquire the working condition data of the exhaust particulate filter of the diesel vehicle and carry out the controlled output of an additive injection pump and a recycled oil injection pump. A signal acquisition and processing module carries out signal acquisition and data storage for four channels of analogs related to temperature T1, exhaust back pressure, the fuel quantity of a fuel tank and temperature T2 and one channel of switching quantity related to the additive level, and exchanges data with a PC computer through a RS485 communication port; a liquid crystal operator mainly carries out data display, parameter setting, data analysis and computation and fault warning and recording, and exchanges data with the PC computer through a RS485 communication port; a drive control module mainly carries out the controlled output of the additive injection pump and the recycled oil injection pump, and exchanges data with the PC computer through a RS485 communication port; a recycling nozzle, a temperature T1 sensor and a back pressure-measuring sensor are respectively arranged on a pipeline between the exhaust of an engine and the inlet a catalytic converter; and a temperature T2 sensor is arranged on a pipeline between the catalytic converter and a filter.
Description
Technical field
The utility model relates to a kind of particulates in exhaust gas from diesel vehicle catcher control system that is used to gather particulates in exhaust gas from diesel vehicle catcher floor data, finishes the control output of additive injection pump and regeneration oil spout syringe pump, belongs to diesel engine truck exhaust particulate filter control system and makes the field.
Background technique
CN1861992A, title " self burning trapper for waste gas particle from diesel oil internal combustion engine and particle treatment method ", self burning trapper for waste gas particle from diesel oil internal combustion engine is positioned at offgas duct, pressure transducer is positioned at the tail gas mouth of exhaust gases of internal combustion engines mouth or offgas duct, its signal output part connects the signal input part of controller, the signal output part of controller connects the power switch control end, and power switch connects the positive and negative electrode at self burning trapper for waste gas particle from diesel oil internal combustion engine two ends respectively by power line.Its deficiency: the collection of floor data is imperfect, and whether science, accurate data instruction can't be provided for the work of particle trapper.
Summary of the invention
Purpose of design: avoid the deficiency in the background technique, design a kind of particulates in exhaust gas from diesel vehicle catcher control system signal acquisition module of can science, intactly particulates in exhaust gas from diesel vehicle catcher floor data being gathered.
In order to realize above-mentioned purpose of design, the utility model adopts four road collection of simulant signal circuit and a path switching signal Acquisition Circuit, to the monitoring of the floor data of particulates in exhaust gas from diesel vehicle catcher with collection, and analogue signal, data-signal conditioning to being gathered, the analog amount multidiameter option switch is controlled the connecting and disconnecting of four tunnel analogue signals (temperature T 1, tail gas back pressure, fuel oil volume read-out, temperature T 2), has only one tunnel analog amount to arrive the MCU of band modulus (AD) transducer by isolated amplifier in four tunnel analog amounts at every turn.This road analog signals of additive liquid level is connected with MCU by the photoelectricity isolation through behind the signal condition, carries out analog-to-digital conversion in MCU.MCU is stored in the middle of the storage after by data processing.This signal acquisition module also can realize exchanges data by RS485 communication interface and PC.
In order to realize above-mentioned purpose of design, improve particulates in exhaust gas from diesel vehicle trap regeneration usefulness, the utility model adopts four road collection of simulant signal circuit and a path switching signal Acquisition Circuit, to the monitoring of the floor data of particulates in exhaust gas from diesel vehicle catcher with collection, and analogue signal to being gathered, the data-signal conditioning, the analog amount multidiameter option switch is controlled four tunnel analogue signals (temperature T 1, the tail gas back pressure, the fuel oil volume read-out, temperature T 2) connecting and disconnecting have only one tunnel analog amount to arrive the MCU of band modulus (AD) transducer by isolated amplifier at every turn in four tunnel analog amounts.This road analog signals of additive liquid level is through behind the signal condition, be connected with MCU by the photoelectricity isolation, in MCU, carry out analog-to-digital conversion, and with switching value input channel additive storage tank liquid level, the liquid-level switch closure that (additive arranged) during proper functioning (additive drops to disconnect in limited time under the liquid level and reports to the police), and by the miniature low tension magnetic pumping of DC24V injecting additive in accordance with regulations.Do not reach setting value and be when back pressure reaches setting value or regeneration temperature, regeneration oil spout driving work and carry out oil spout work by the DC24V electromagnetic pump.
In order to realize above-mentioned purpose of design, the utility model on structural design, the one, particulates in exhaust gas from diesel vehicle catcher control system operator can be finished data display, parameter setting, data analysis and functions such as calculating, malfunction alarm and record; The 2nd, can determine sound alarm, light warning by button, and the affirmation that the parameter setting is added and subtracted, parameter is set, computational analysis comprises the functions such as PWM calculating that accuracy, upper and lower judgement, fault judgement, the control to input signal is exported; The 3rd, send data to signal acquisition module and transmit order, to the parameter of drive control module transmission PWM, carry out fault and event information transmission etc. with PC.
Technological scheme: diesel engine truck exhaust particulate filter control system is by signal acquisition module, the liquid crystal operation device, electromagnetic pump driver module and formations such as conjunction cable and sensor thereof, the signal acquisition process module is finished temperature T 1, exhaust back pressure, the fuel tank oil mass, the storage of the signals collecting of temperature T 2 four tunnel analog amounts and additive liquid level one way switch amount and data constitute and with by RS485 communication interface and PC realization exchanges data, the liquid crystal operation device is mainly finished data display, parameter is provided with, data analysis and calculating, malfunction alarm and record and by RS485 communication interface and PC realization exchanges data, drive control module is mainly finished the control output of additive injection pump and regeneration oil spout syringe pump and is realized exchanges data by RS485 communication interface and PC, the regeneration nozzle, temperature T 1 sensor, the back pressure measuring transducer is located at respectively on the pipeline between engine exhaust port and the catalyst converter import, and the pipeline between catalyst converter and the filter is provided with temperature T 2 sensors.
The utility model is compared with background technique, and the one, can gather the floor data of particulates in exhaust gas from diesel vehicle catcher accurately, reliably; The 2nd, finish the analogue signal of being gathered, data-signal conditioning, and be isolated in by photoelectricity and carry out analog-to-digital conversion among the MCU; The 3rd, signal acquisition module can realize exchanges data by RS485 communication interface and PC; The 4th, regeneration oil spout driver element and additive injection pump driver element can be accurately, reliably according to the floor data of the particulates in exhaust gas from diesel vehicle catcher that signal acquisition module collected, and finish the interpolation of additive and the regenerate required oil spout and the size of fuel injection quantity.
Description of drawings
Fig. 1-the 1st, the detection block diagram in the particulates in exhaust gas from diesel vehicle catcher control system.
Fig. 1-2 is the control block diagram in the particulates in exhaust gas from diesel vehicle catcher control system.
Fig. 2 is the block diagram of particulates in exhaust gas from diesel vehicle catcher control system signal acquisition module.
Fig. 3 is the block diagram of particulates in exhaust gas from diesel vehicle catcher control system electromagnetic pump driver module.
Fig. 4 is the block diagram of particulates in exhaust gas from diesel vehicle catcher control system operator.
Embodiment
1～4 pair of the utility model is done with narration in conjunction with the accompanying drawings.
With reference to accompanying drawing 1-1 and 1-2.Diesel engine truck exhaust particulate filter control system is by signal acquisition module, the liquid crystal operation device, electromagnetic pump driver module and formations such as conjunction cable and sensor thereof, the signal acquisition process module is finished temperature T 1, exhaust back pressure, the fuel tank oil mass, the storage of the signals collecting of temperature T 2 four tunnel analog amounts and additive liquid level one way switch amount and data constitute and with by RS485 communication interface and PC realization exchanges data, the liquid crystal operation device is mainly finished data display, parameter is provided with, data analysis and calculating, malfunction alarm and record and by RS485 communication interface and PC realization exchanges data, drive control module is mainly finished the control output of additive injection pump and regeneration oil spout syringe pump and is realized exchanges data by RS485 communication interface and PC, the regeneration nozzle, temperature T 1 sensor, the back pressure measuring transducer is located at respectively on the pipeline between engine exhaust port and the catalyst converter import, and the pipeline between catalyst converter and the filter is provided with temperature T 2 sensors.
With reference to accompanying drawing 2.Particulates in exhaust gas from diesel vehicle catcher control system signal acquisition module, the power end of the output termination MCU of PMU, signals collecting and data storage that the signal acquisition process module is mainly finished four tunnel analog amounts and a way switch amount constitute, the signal receiving end of signal acquisition process module receives temperature T 1 respectively, the tail gas back pressure, the fuel tank oil mass, temperature T 2, the signal of additive liquid level and temperature T after treatment 1, the tail gas back pressure, the fuel tank oil mass, the signal output part of temperature T 2 is respectively to the signal input part of analog amount multidiameter option switch, additive liquid level signal after the processing is partitioned to the signal end of MCU by photoelectricity, the signal output part of analog amount multidiameter option switch is through the signal end of isolated amplifier to MCU, storage, real-time clock is connected with the MCU signal end respectively with the RS485 communication interface; Described tail gas back pressure is meant input signal types DC4～20mA, corresponding measuring range 0～60kPa, precision ± 2%, minimum unit of display 0.1kPa, power supply voltage DC24V; Described temperature T 1 is meant the exhaust temperature between motor exhaust outlet and the catalyst converter, and exhaust temperature T1 adopts thermocouple to detect thermocouple response time＜7S, 0～1100 ℃ of temperature-measuring range, precision ± 1%, 1 ℃ of minimum show value; (can set the upper and lower limit alarming value); Described temperature T 2 is meant the catalyst converter exhaust gas temperature downstream, catalyst converter exhaust gas temperature downstream T2 be meant thermocouple (response time＜7S), 0～1100 ℃ of temperature-measuring range, precision ± 1% (detection of the temperature that regeneration need reach and control); Described fuel tank oil mass is meant input signal types DC0～10V, the minimum oil level and the maximum oil position of corresponding fuel tank, power supply voltage DC24V.That is to say, particulates in exhaust gas from diesel vehicle catcher control system signal acquisition module comprises the signal condition unit to temperature T 1, tail gas back pressure, fuel oil volume read-out, temperature T 2, additive liquid level signal collection conditioning, five road signals process in the signal condition unit is handled, four road signal temperature T 1 wherein, tail gas back pressure, fuel oil volume read-out, temperature T 2 arrive the analog amount multidiameter option switchs, and the selection signal by the analog amount multidiameter option switch is through the isolation of isolated amplifier and change into the MCU that standard signal arrives a band modulus (AD) conversion.The additive liquid level signal arrives optoelectronic isolator after by the signal condition unit, realizes the conversion of photosignal, and the MCU in a band modulus (AD) conversion is connected again.MCU carries out analog-to-digital conversion, data processing to five road signals, be stored in the middle of the storage by SPI communication protocol mode, and be provided with the RS485 communication interface in the middle of particulates in exhaust gas from diesel vehicle catcher control system signal acquisition module, convenient and PC is realized data communication.The switch of switching value additive liquid level signal is installed in additive storage tank, the liquid-level switch closure that (additive arranged) during proper functioning, and additive drops to disconnect in limited time under the liquid level and reports to the police.Signal acquisition module is to the storage of image data, comprise temperature T 1, tail gas back pressure, fuel oil volume read-out, temperature T 2, additive fluid level condition, periodic sampling by 1 second, per 8 seconds calculating mean values are also stored with date, time and hours run, storage capacity satisfies and to be not less than move 10 hours every day totally 30 days data, and adopts the endless form storage.
The signal condition part: signal condition will carry out image data to five road signals (temperature T 1, tail gas back pressure, fuel oil volume read-out, temperature T 2, additive liquid level) to be handled, the interference filtering of this part to existing in the middle of five circuit-switched data that collect, the proper functioning of assurance system.
The analog amount multidiameter option switch: this selector switch can be selected four road signals (temperature T 1, tail gas back pressure, fuel oil volume read-out, temperature T 2), controls the connecting and disconnecting of four road signals and isolated amplifier.
Isolated amplifier: be used for isolation, and convert the standard signal that computer can receive to, make signal at 2 when not transmitting between the equipotential, avoid the interference of loop circuit, guarantee the accuracy of signal to signal.
Photoelectricity is isolated: realize the transmission of additive leve signal.Input is isolated signal one-way transmission, no feedback influence with the output insulation.Strong interference immunity, speed of response is fast.During work, input signal is added to input end, makes luminotron tube luminous, photosensitive device is exported photoelectric current under Magnetic Optical Radiation, thereby realizes twice conversion of electric light point.
The MCU of band modulus (AD) transducer: as the core component of this signal acquisition module, five tunnel signals that collect are carried out analog-to-digital conversion, store in the middle of the storage carrying out data processing after the analog-to-digital conversion.
The RS485 communication interface: signal acquisition module can realize exchanges data by this communication interface and PC.
Real-time clock: the device that the time and date that binary-coded decimal represents is provided to main system.
With reference to accompanying drawing 3.Particulates in exhaust gas from diesel vehicle catcher control system electromagnetic pump driver module, the signal end of regeneration oil spout driver element and additive injection pump driver element is connected with the signal end of MCU by the photoelectricity isolated location respectively, RS485 interface signal end is connected with the MCU signal end, and power output end is connected with the power end of MCU;
Additive injection drives: by the miniature low tension magnetic pumping of DC24V injecting additive in accordance with regulations, the per injection amount is 0.065ml, and injection speed is adjustable at 1～60 time/min, driving current 200mA;
The regeneration oil spout drives: carried out by the DC24V electromagnetic pump, the most about 3A of output current, the maximum delivery pressure 2MPa of pump, the about 50ml/min of peak rate of flow are set between frequency 1～15Hz.Overvoltage, overcurrent, overtemperature protection are arranged, prevent the damage of electromagnetic pump.
The signal output part that the signal receiving end of signal acquisition process module receives the signal of temperature T 1, tail gas back pressure, fuel tank oil mass, temperature T 2, additive liquid level and temperature T after treatment 1, tail gas back pressure, fuel tank oil mass, the temperature T 2 respectively additive liquid level signal to the signal input part of analog amount multidiameter option switch, after handling respectively is partitioned to the signal end of MCU by photoelectricity, the signal output part of analog amount multidiameter option switch is through the signal end of isolated amplifier to MCU, and storage, real-time clock and RS485 communication interface are connected with the MCU signal end respectively; The tail gas back pressure is meant input signal types DC4～20mA, corresponding measuring range 0～60kPa, precision ± 2%, minimum unit of display 0.1kPa, power supply voltage DC24V; Temperature T 1 is meant the exhaust temperature between motor exhaust outlet and the catalyst converter, and exhaust temperature T1 adopts thermocouple to detect thermocouple response time＜7S, 0～1100 ℃ of temperature-measuring range, precision ± 1%, 1 ℃ of minimum show value; (can set the upper and lower limit alarming value); Temperature T 2 is meant the catalyst converter exhaust gas temperature downstream, catalyst converter exhaust gas temperature downstream T2 be meant thermocouple (response time＜7S), 0～1100 ℃ of temperature-measuring range, precision ± 1% (detection of the temperature that regeneration need reach and control); The fuel tank oil mass is meant input signal types DC0～10V, the minimum oil level and the maximum oil position of corresponding fuel tank, power supply voltage DC24V.That is to say, particulates in exhaust gas from diesel vehicle catcher control system signal acquisition module comprises the signal condition unit to temperature T 1, tail gas back pressure, fuel oil volume read-out, temperature T 2, additive liquid level signal collection conditioning, five road signals process in the signal condition unit is handled, four road signal temperature T 1 wherein, tail gas back pressure, fuel oil volume read-out, temperature T 2 arrive the analog amount multidiameter option switchs, and the selection signal by the analog amount multidiameter option switch is through the isolation of isolated amplifier and change into the MCU that standard signal arrives a band modulus (AD) conversion.The additive liquid level signal arrives optoelectronic isolator after by the signal condition unit, realizes the conversion of photosignal, and the MCU in a band modulus (AD) conversion is connected again.MCU carries out analog-to-digital conversion, data processing to five road signals, be stored in the middle of the storage by SPI communication protocol mode, and be provided with the RS485 communication interface in the middle of particulates in exhaust gas from diesel vehicle catcher control system signal acquisition module, convenient and PC is realized data communication.The switch of switching value additive liquid level signal is installed in additive storage tank, the liquid-level switch closure that (additive arranged) during proper functioning, and additive drops to disconnect in limited time under the liquid level and reports to the police.Signal acquisition module is to the storage of image data, comprise temperature T 1, tail gas back pressure, fuel oil volume read-out, temperature T 2, additive fluid level condition, periodic sampling by 1 second, per 8 seconds calculating mean values are also stored with date, time and hours run, storage capacity satisfies and to be not less than move 10 hours every day totally 30 days data, and adopts the endless form storage.
Isolated amplifier: be used for isolation, and convert the standard signal that computer can receive to, make signal at 2 when not transmitting between the equipotential, avoid the interference of loop circuit, guarantee the accuracy of signal to signal.Photoelectricity is isolated: realize the transmission of additive leve signal.Input is isolated signal one-way transmission, no feedback influence with the output insulation.Strong interference immunity, speed of response is fast.During work, input signal is added to input end, makes luminotron tube luminous, photosensitive device is exported photoelectric current under Magnetic Optical Radiation, thereby realizes twice conversion of electric light point.
With reference to accompanying drawing 4.Particulates in exhaust gas from diesel vehicle catcher control system operator, LCD display, fault storage, alarm and RS485 interface signal are connected with interface signal among the MCU respectively.
The liquid crystal operation device is established five buttons altogether and is respectively applied for that sound alarm is determined, light warning is determined, parameter is set plus-minus, parameter setting check.Wherein back three buttons are pressed simultaneously, and delay time more than 1 second, then enter the parameter set condition.Five LED are installed in respectively below five buttons, and wherein two LED under the acoustooptic alarm button are red, and the LED under other three buttons is green.
Liquid crystal screen adopts the monochromatic lattice lcd of 78 * 26mm, display mode is divided into the method for operation and set-up mode, the currency and the oil level state (how much representing) that can show delivery temperature, exhaust back pressure during the method for operation continuously with stick, when alert event or work event (taking place) occurring as regeneration, screen Alternation Display measured value and event code (or information).
Warning and event information comprise following content:
(1) no back pressure reveal codes: ERRO 1
(2) 10 minutes no pressure-display codes behind the switch connection: ERRO 2
(3) 10 minutes temperature no change reveal codess behind the switch connection: ERRO 3
(4) temperature sensor probe damages reveal codes: ERRO 4
(5) arrive back pressure lower limit reveal codes: ERRO 5
(6) arrive back pressure CLV ceiling limit value reveal codes: ERRO 6
(7) oil tank liquid level sensor no signal reveal codes: ERRO 7
(8) low reveal codes: the ERRO 8 of additive storage tank liquid level
(9) reveal codes: ERRO 9 takes place in regeneration
(10) regeneration oil spout electromagnetic pump short circuit, overvoltage reveal codes: ERRO 10
(11) additive injection pump short circuit, overvoltage reveal codes: ERRO 11
(12) communication failure reveal codes: ERRO 12
Report to the police and divide the acousto-optic dual mode, respectively by buzzer and LED light (redness) indication, different conditions indicating mode difference.Can eliminate sound and flash or keep the warning luminous signal by button.
Report to the police and the special-purpose nonvolatile memory of event information storage employing, each record comprises date, time, incident code name and note, and capacity is no less than 1000 records.
During set-up mode, can carry out the parameter shown in the following table:
System default parameter
Computational analysis comprises the functions such as PWM calculating that accuracy, upper and lower judgement, fault judgement, the control to input signal is exported.
Communication function comprises: send data to signal acquisition module and transmit order, to the parameter of drive control module transmission PWM, carry out fault and event information transmission etc. with PC.
PMU: be responsible for the required power supply power reguirements of signal acquisition process module.
What should be understood that is: though the foregoing description is to the utility model detailed text description of contrasting; but these text descriptions; it is simple description to the utility model mentality of designing; rather than to the restriction of the utility model mentality of designing; any combination, increase or modification that does not exceed the utility model mentality of designing all falls within the protection domain of this utility model.
Claims (4)
1, a kind of diesel engine truck exhaust particulate filter control system, it is characterized in that by signal acquisition module, the liquid crystal operation device, electromagnetic pump driver module and formations such as conjunction cable and sensor thereof, the signal acquisition process module is finished temperature T 1, exhaust back pressure, the fuel tank oil mass, the storage of the signals collecting of temperature T 2 four tunnel analog amounts and additive liquid level one way switch amount and data constitute and with by RS485 communication interface and PC realization exchanges data, the liquid crystal operation device is mainly finished data display, parameter is provided with, data analysis and calculating, malfunction alarm and record and by RS485 communication interface and PC realization exchanges data, drive control module is mainly finished the control output of additive injection pump and regeneration oil spout syringe pump and is realized exchanges data by RS485 communication interface and PC, the regeneration nozzle, temperature T 1 sensor, the back pressure measuring transducer is located at respectively on the pipeline between engine exhaust port and the catalyst converter import, and the pipeline between catalyst converter and the filter is provided with temperature T 2 sensors.
2, diesel engine truck exhaust particulate filter control system according to claim 1, it is characterized in that: the signal receiving end of signal acquisition process module receives temperature T 1 respectively, the tail gas back pressure, the fuel tank oil mass, temperature T 2, the signal of additive liquid level and temperature T after treatment 1, the tail gas back pressure, the fuel tank oil mass, the signal output part of temperature T 2 is respectively to the signal input part of analog amount multidiameter option switch, additive liquid level signal after the processing is partitioned to the signal end of MCU by photoelectricity, the signal output part of analog amount multidiameter option switch is through the signal end of isolated amplifier to MCU, storage, real-time clock is connected with the MCU signal end respectively with the RS485 communication interface.
3, diesel engine truck exhaust particulate filter control system according to claim 1, it is characterized in that: the signal end of regeneration oil spout driver element and additive injection pump driver element is connected with the signal end of MCU by the photoelectricity isolated location respectively, RS485 interface signal end is connected with the MCU signal end, and power output end is connected with the power end of MCU.
4, diesel engine truck exhaust particulate filter control system according to claim 1 is characterized in that: LCD display, fault storage, alarm and RS485 interface signal are connected with interface signal among the MCU respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201637604U CN201363181Y (en) | 2008-08-30 | 2008-08-30 | Control system for exhaust particulate filter of diesel vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201637604U CN201363181Y (en) | 2008-08-30 | 2008-08-30 | Control system for exhaust particulate filter of diesel vehicle |
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| Publication Number | Publication Date |
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| CN201363181Y true CN201363181Y (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201637604U Expired - Lifetime CN201363181Y (en) | 2008-08-30 | 2008-08-30 | Control system for exhaust particulate filter of diesel vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011632A (en) * | 2010-11-05 | 2011-04-13 | 奇瑞汽车股份有限公司 | Control circuit for monitoring automobile exhaust system and control method thereof |
| CN104329141A (en) * | 2014-10-29 | 2015-02-04 | 凯龙高科技股份有限公司 | DPF (diesel particulate filter) system electric control device |
| CN108762334A (en) * | 2018-04-17 | 2018-11-06 | 潍柴动力股份有限公司 | Control method and control device for DOC downstream temperatures |
-
2008
- 2008-08-30 CN CNU2008201637604U patent/CN201363181Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011632A (en) * | 2010-11-05 | 2011-04-13 | 奇瑞汽车股份有限公司 | Control circuit for monitoring automobile exhaust system and control method thereof |
| CN104329141A (en) * | 2014-10-29 | 2015-02-04 | 凯龙高科技股份有限公司 | DPF (diesel particulate filter) system electric control device |
| CN108762334A (en) * | 2018-04-17 | 2018-11-06 | 潍柴动力股份有限公司 | Control method and control device for DOC downstream temperatures |
| CN108762334B (en) * | 2018-04-17 | 2020-09-29 | 潍柴动力股份有限公司 | Control method and control device for DOC downstream temperature |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091216 |
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| CX01 | Expiry of patent term |